KR100789303B1 - Conveyor apparatus - Google Patents

Abstract

In order to suppress the speed nonuniformity of the stepping roller 5, when the bending part 17 is formed in the stepping guide rail 3, and the pressing member 18 is provided in the front end, an elastic member is circumferentially circumscribed. The height of the bent portion 17 and the pressing member 18 as much as the elastic member compresses due to the pressing force acting between the bent portion 17 and the pressing member 18 of the stepping roller 5 formed in the groove. The shape is corrected in advance, and the occurrence of speed unevenness in the step 4 is appropriately suppressed to improve the riding comfort. Moreover, the recessed part 3aa is provided in the stepping guide rail 3, and the stepping is avoided by pinching from the bottom with respect to the stepping roller 5 which moves while rolling the lower surface of the pressing member 18. Moreover, as shown in FIG. The damage of the end roller 5, the press member 18, and the step guide rail 3 is prevented.

Stepping roller, Stepping guide rail, Pressing member, Drive sprocket, Moving walk

Description

Conveyor Unit {CONVEYOR APPARATUS}

The present invention relates to a conveyor device such as an escalator or moving walk.

Conveyor devices, such as escalators and moving walks, have a plurality of stepping steps provided with stepping rollers, and each stepping step is guided by a stepping guide rail, driven by a chain drive mechanism, to circulate between the burnt and unloaded areas. It is configured to move.

In a moving walk | work, it is common for a several step | movement step to move to a horizontal direction, and although a stepping step is especially called a stepping board, in this specification, even in a moving walk | work, the description is unified as a stepping step.

The chain drive mechanism connects the return end of the stepping chain in which the stepping roller is connected endlessly at a predetermined pitch (link length r) to a drive sprocket which rotates in response to the driving force of the driving motor. It is a general type of winding to transfer the driving force of the motor to the step chain. Such a chain drive mechanism is usually arranged inside a structure called a truss near the burnt or unloaded portion of the conveyor apparatus.

The truss in which the chain drive mechanism is arranged is conventionally required a sufficient space for carrying out the installation work. However, the truss is required to be miniaturized. In recent years, an attempt has been made to save space by making the entire conveyor apparatus thin. have.

When a small diameter sprocket is used for the drive sprocket in response to the miniaturization of the truss, a relatively large speed unevenness occurs in the stepping roller connected to the stepping chain, and this speed unevenness becomes a vibration of the stepping step, thereby reducing the ride comfort of the conveyor device. Let's do it.

Therefore, the present applicant has previously proposed a conveyor apparatus having a configuration that can reduce the occurrence of speed unevenness in the stepping roller. For example, there is Japanese Unexamined Patent Publication (Japanese Unexamined Patent Publication No. 2003-252560).

1 to 3 are diagrams illustrating a conventional conveyor apparatus, wherein the conveyor apparatus 1 is a moving walk installed substantially horizontally with respect to a road surface, and is a ride 1a inside a structure 2 called a truss. ) And a stepping guide rail 3 that is circulated over the lowering place 1b, and the stepping guide rail 3 is configured to guide the movement of the plurality of stepping steps 4.

Stepping rollers 5 are provided in the plurality of stepping steps 4, respectively, and the stepping rollers 5 move along the stepping guide rails 3.

The stepping guide rail 3 is composed of a rail main body 3a having a supporting surface on its path side, and a pressing rail 3b provided on the return side, and a stepping step for moving the path side ( 4) moves in the direction of arrow A toward the landing 1b from the ride 1a. A comb plate 6 is provided near the burner 1a and near the lowering 1b, and the step 4 moves below the comb plate 6.

The stepping step 4 moving the return side moves from the place 1b where the stepping step roller 5 falls between the rail body 3a and the pressing rail 3b to the burning place 1a. Moreover, the movable rail 3c which is movable in the direction which separates with respect to this rail main body 3a is provided in the burner 1a side.

Since the stepping rollers 5 of each stepping step 4 connected to each other at a predetermined pitch (link length r) are driven in contact with the stepping guide rails 3, the stepping step 4 is a stepping guide rail. Guided to (3), it moves constantly without a gap between the burnt 1a and the unloaded 1b.

Since the return portion of the stepping chain 7 is wound around the drive sprocket 9 which rotates in response to the driving force of the drive motor 8, the chain drive mechanism drives the drive motor through the drive chain 10 and the drive sprocket 9. The driving force of (8) is transmitted to the stepping chain (7).

That is, the drive chain 10 and the drive motor 8 constitute a rotation drive device, and the drive sprocket 9 which receives the driving force of the rotation drive device is connected to the stepping chain 7 between adjacent teeth and teeth. The stepping chain 7 and the stepping roller 5 connected thereto are transported in a state in which the stepping rollers 5 connected thereto are engaged.

On the burner 1a side of the conveyor apparatus 1, a driven sprocket 11 of approximately the same diameter as the drive sprocket 9, which is driven and rotates on the drive sprocket 9, is provided. 7) runs from the driven sprocket 11 to the drive sprocket 9.

Since the driven sprocket 11 is biased in the direction away from the drive sprocket 9 by the spring member 12 of the chain tension mechanism, the stepping chain 7 is tensioned in the horizontal direction. Looseness in the advancing direction is prevented. In addition, the movable rail 3c of the stepping guide rail 3 also moves in the direction away from the drive sprocket 9 in cooperation with the driven sprocket 11.

The stepping roller 5 is connected to the drive sprocket 9 in the process of being converted from the linear movement in the horizontal direction along the stepping guide rail 3 to the movement according to the rotation of the diameter of the driving sprocket 9. Since the teeth engage, speed unevenness occurs in the moving speed.

The speed nonuniformity generated in the stepping roller 5 causes vibration in the stepping step 4 to reduce the riding comfort of the conveyor apparatus 1, so that the path side sprocket 9 of the rail main body 3a is near, Stepping roller (5) in the vicinity of the drive sprocket (9) of the pressing rail (3b) provided on the return side of the stepping guide rail (3), and in the path side and the return side driven sprocket (11) of the movable rail (3c). Mountain-shaped bends 13 are provided to absorb the speed unevenness.

The stepping roller 5 passes through the trajectory according to the shape of these mountain-shaped bent portions 13, and the stepping roller 5 is concave so that the stepped rollers 5 can move along these bent portions 13 at positions facing the bent portions 13. Part 14 is provided, respectively.

Moreover, in the position which opposes the front end of the curved part 13 provided in the path | route side drive sprocket 9 vicinity part of the rail main body 3a, the preceding stepping roller 5 passes through the curved part 13 By the influence, in order to prevent the following stepping roller 5 from being lifted up, the pressing member 15 which abuts on the upper end of the stepping roller 5 is provided in the position which opposes the stepping guide rail 3, have.

This pressing member 15 is similarly provided also in the position which opposes the rear end of the bending part 13 provided in the vicinity of the path side driven sprocket 11 of the movable rail 3c.

Even when the conveyor apparatus 1 is reversely operated by installing the bent portion 13 in the vicinity of the drive sprocket 9 of the pressing rail 3b provided on the return side of the stepping guide rail 3, The movement of the stepping roller 5 can be smoothed to suppress the speed nonuniformity generated in the stepping step 4, that is, the vibration.

In addition, even if the shape of the bent part 13 is not a mountain shape but a valley shape, the speed nonuniformity of the stepping roller 5 can be absorbed similarly.

In the above-mentioned conveyor apparatus, in order to prevent the generation | occurrence | production of the noise at the time of rotation of the stepping-roller 5, it is conceivable to interpose a flexible elastic member, such as rubber, on the outer side around the rotation axis of the stepping-rolling roller 5.

Since the tension of chain tensioning mechanisms, such as the spring member 12, acts on the stepping roller 5 on the stepping guide rail 3 in a horizontal direction at the straight portion, the stepping roller 5 When () is going to cross over the stepped bend 13 formed in the stepped guide rail 3, a large pressing force is applied to the stepped roller 5 to press the stepped bent 13.

When the elastic member is interposed around the axis of the stepping roller 5, the pressing force when passing through the bent portion 13 acts in the radial direction of the stepping roller 5, and the elastic member is compressed. As a result, the trajectory which moves along the shape of the curved part 13 of the stepping-roller 5 shaft deviates from the preset trajectory in order to suppress a speed nonuniformity, and there exists a possibility that reduction of expected speed nonuniformity may not be obtained.

The same applies to the case where the bent portion 13 formed in the stepping guide rail 3 is valley type, and in the case of the valley type, the stepped roller 5 can follow a predetermined trajectory along the shape of the valley type bent portion 13. Similarly, the pressing force is applied between the convex pressing members on the lower side arranged opposite, and the elastic members of the stepping roller 5 are compressed in the radial direction so that the speed unevenness may not be appropriately suppressed.

In addition, in the conventional conveyor apparatus, the pressing member 15 is disposed at an opposite position of the stepping guide rail 3 in order to prevent lifting of the stepping roller located at the rear end (the side of the burning place 1a) than the mountain-shaped bent portion 13. ), But when the stepping roller 5 is inserted from the top and bottom by the pressing member 15 and the stepping guide rail 3, the stepping roller 5 does not rotate but slides, and the sliding friction This may damage not only the stepping roller 5 but also the pressing member 15 and the stepping roller 5.

In addition, if a clearance is provided between the pressing member 15 and the stepping roller 5 in order to avoid slipping, the stepping roller 5 is shifted to the pressing member 15 side by the gap. Since it moves, there exists a possibility of increasing a speed nonuniformity.

In addition, in the conventional conveyor apparatus, when the stepping chain before and after the stepping roller 5 at the joint to the mountainous and valley-like bends 13 is a straight line, the connection to the mountainous and valley-like bends 13 is performed. When the stepping roller 5 passes through the portion, the joint is slightly bent so that the subsequent stepping roller 5 can follow the speed change, and the stepping roller 5 passes through the portion. In doing so, there is a risk of generating dynamic shock vibration.

Accordingly, a first object of the present invention is to provide a conveyor apparatus capable of appropriately suppressing the occurrence of speed unevenness in the stepping step even when an elastic member is interposed around the axis of the stepping roller and the diameter is compressed by the pressing force. It is in doing it.

Moreover, it is providing the conveyor apparatus which can suppress the generation | occurrence | production of the speed nonuniformity in a stepping roller and a stepping | stool while suppressing the damage of a stepping roller etc. by avoiding pinching from the top and bottom with respect to the running stepping roller. .

Further, a second object of the present invention is to adequately suppress the occurrence of speed unevenness in the tread roller and the tread stage without generating dynamic impact vibration when the tread roller passes through the joint to the mountain and valley bends. It is to provide a conveyor apparatus that can.

In order to achieve the above object, the conveyor apparatus of the present invention is made from the following configuration. In other words,

A plurality of stepping steps having a stepping roller, a stepping chain connecting the stepping roller at a predetermined pitch, a rotation driving device for generating a driving force for moving the stepping step in a predetermined direction, and a driving force of the rotation driving device The drive sprocket which rotates and transmits a driving force to the stepping chain, and the pitch original speed of the drive sprocket is Vt, and the average speed of the stepping roller which is connected to the stepping chain and moves is Vo, and the stepping step When the position where the speed of the roller is reduced from Vt to Vo is referred to as a reference position, a mountain-shaped bent portion is provided between a reference position located near the drive sprocket among the plurality of reference positions that exist, and another reference position adjacent to the reference position. And a stepping guide rail for guiding the stepping roller and a stepping roller at an opposite position of the front end of the site where the bent portion is installed. In a conveyor apparatus provided with a pressing member, a stepping roller has an elastic member formed around an axis, and the stepping guide rail has a height of a central portion of the mountain curved portion in the radial direction of the stepping roller of the elastic member. It is characterized by being formed by increasing the amount corresponding to the compressed powder.

Next, the conveyor apparatus of the present invention,

A plurality of stepping steps having a stepping roller, a stepping chain connecting the stepping roller at a predetermined pitch, a rotation driving device for generating a driving force for moving the stepping step in a predetermined direction, and a driving force of the rotation driving device The drive sprocket which rotates to transmit the driving force to the stepping chain, the pitch spherical speed of the drive sprocket is Vt, and the average speed of the stepping roller which is connected to the stepping chain to move is Vo, and the speed of the stepping roller is Vt When the reference position is reduced from Vo to Vo, between the reference position closest to the drive sprocket among the plurality of reference positions that exist, and the driving origin on the drive sprocket separated from the reference position by the link length of the step chain. Opposing stepping guide rail for guiding the stepping roller with the stepped bend, and the front end of the site where the stepped bend is installed A conveyor apparatus having a pressing member disposed to abut on a stepping roller at a position, wherein the stepping roller has an elastic member around an axis, and the stepping guide rail sets the height of the center portion of the bent portion to the stepping portion of the elastic member. It is characterized by being formed by increasing the amount corresponding to the compression in the radial direction of the roller.

Next, the conveyor apparatus of the present invention,

A plurality of stepping steps having a stepping roller, a stepping chain connecting the stepping roller at a predetermined pitch, a rotation driving device for generating a driving force for moving the stepping step in a predetermined direction, and a driving force of the rotation driving device The drive sprocket which rotates to transmit the driving force to the stepping chain, the pitch spherical speed of the drive sprocket is Vt, and the average speed of the stepping roller which is connected to the stepping chain to move is Vo, and the speed of the stepping roller is Vt When the reference position is reduced from Vo to Vo, a stepped roller is formed by providing a valley bend between a reference position positioned near the drive sprocket among a plurality of existing reference positions and another reference position adjacent to the reference position. Conveyor with a stepping guide rail for guiding and a pressing member installed to abut against the stepping roller at opposite positions of the valley bend. In the apparatus, the stepping roller is formed with an elastic member around an axis, and the pressing member increases the height of the central portion toward the valley-shaped bend by an amount corresponding to the compression in the radial direction of the stepping roller of the elastic member. Characterized in that formed.

Next, the conveyor apparatus of the present invention,

A plurality of stepping steps having a stepping roller, a stepping chain connecting the stepping roller at a predetermined pitch, a rotation driving device for generating a driving force for moving the stepping step in a predetermined direction, and a driving force of the rotation driving device The drive sprocket which rotates to transmit the driving force to the stepping chain, the pitch spherical speed of the drive sprocket is Vt, and the average speed of the stepping roller which is connected to the stepping chain to move is Vo, and the speed of the stepping roller is Vt When the reference position is reduced from Vo to Vo, a stepped roller is provided between a reference position positioned near the drive sprocket among the plurality of reference positions that exist, and another reference position adjacent to the reference position, Pressing member provided to abut the stepping-roller at the opposing position of the stepping guide rail to guide, and the front end of the site | part in which the mountain-shaped bend was provided. In a conveyor apparatus comprising, Didim stage guide rail is characterized by the formation of a recess in the opposing face of the pressing member.

Next, the conveyor apparatus of the present invention,

A plurality of stepping steps having a stepping roller, a stepping chain connecting the stepping roller at a predetermined pitch, a rotation driving device for generating a driving force for moving the stepping step in a predetermined direction, and a driving force of the rotation driving device The drive sprocket which rotates to transmit the driving force to the stepping chain, the pitch spherical speed of the drive sprocket is Vt, and the average speed of the stepping roller which is connected to the stepping chain to move is Vo, and the speed of the stepping roller is Vt When the reference position is reduced from Vo to Vo, a stepped roller is provided between a reference position positioned near the drive sprocket among a plurality of reference positions that exist, and another reference position adjacent to the reference position, Conveyor with a stepping guide rail for guiding the step, and a pressing member installed to abut the stepping roller at an opposite position of the valley bend. An apparatus, Didim stage guide rail is characterized by the formation of a recess in the valley-shaped bent portion.

Next, the conveyor apparatus of the present invention,

A plurality of stepping steps having a stepping roller, a stepping chain connecting the stepping roller at a predetermined pitch, a rotation driving device for generating a driving force for moving the stepping step in a predetermined direction, and a driving force of the rotation driving device The drive sprocket which rotates to transmit the driving force to the stepping chain, the pitch spherical speed of the drive sprocket is Vt, and the average speed of the stepping roller which is connected to the stepping chain to move is Vo, and the speed of the stepping roller is Vt When the position reduced from V to Vo is a reference position, a ridge is formed between a reference position closest to the drive sprocket among the plurality of reference positions existing and a driving origin on the drive sprocket separated from the reference position by the link length of the step chain. Opposite position of the stepping guide rail for guiding the stepping roller and installing the bent portion, and the front end of the site where the ridge type bending portion is installed Didim as a conveyor device with a pressing member is provided so as to abut with the end roller, Didim stage guide rail is characterized by the formation of a recess in the opposing face of the pressing member.

In addition, the conveyor apparatus of the present invention,

A plurality of stepping steps having a stepping roller, a stepping chain connecting the stepping roller at a predetermined pitch, a rotation driving device for generating a driving force for moving the stepping step in a predetermined direction, and a driving force of the rotation driving device The drive sprocket which rotates to transmit the driving force to the stepping chain, the pitch spherical speed of the drive sprocket is Vt, and the average speed of the stepping roller which is connected to the stepping chain to move is Vo, and the speed of the stepping roller is Vt When the reference position is reduced from Vo to Vo, a stepped roller is provided between a reference position positioned near the drive sprocket among the plurality of reference positions that exist, and another reference position adjacent to the reference position, A conveyor cabinet having a stepping guide rail for guiding and a pressing member installed to abut against the stepping roller at opposite positions of the mountain bend. As further characterized in that that the height of the offset Didim stage guide rail on the far side from the drive sprocket of the mountain-shaped bent portion below the height of the mountain-shaped bend (offset).

Next, the conveyor apparatus of the present invention,

A plurality of stepping steps having a stepping roller, a stepping chain connecting the stepping roller at a predetermined pitch, a rotation driving device for generating a driving force for moving the stepping step in a predetermined direction, and a driving force of the rotation driving device The drive sprocket which rotates to transmit the driving force to the stepping chain, the pitch spherical speed of the drive sprocket is Vt, and the average speed of the stepping roller which is connected to the stepping chain to move is Vo, and the speed of the stepping roller is Vt When the reference position is reduced from Vo to Vo, a stepped roller is provided between a reference position positioned near the drive sprocket among the plurality of reference positions that exist, and another reference position adjacent to the reference position, A conveyor cabinet having a stepping guide rail for guiding and a pressing member installed to abut against the stepping roller at opposite positions of the mountain bend. As, Didim and the end guide rail characterized in that to substantially folded from the center to the edge bend (折 曲) of said mountain-shaped bent portion.

Next, the conveyor apparatus of the present invention,

A plurality of stepping steps having a stepping roller, a stepping chain connecting the stepping roller at a predetermined pitch, a rotation driving device for generating a driving force for moving the stepping step in a predetermined direction, and a driving force of the rotation driving device The drive sprocket which rotates to transmit the driving force to the stepping chain, the pitch spherical speed of the drive sprocket is Vt, and the average speed of the stepping roller which is connected to the stepping chain to move is Vo, and the speed of the stepping roller is Vt When the reference position is reduced from Vo to Vo, a stepped roller is provided between a reference position positioned near the drive sprocket among a plurality of reference positions that exist, and another reference position adjacent to the reference position, Conveyor with a stepping guide rail for guiding the step, and a pressing member installed to abut the stepping roller at an opposite position of the valley bend. An apparatus and a Didim stage guide rail characterized in that the bent so as to fold inwardly from approximately the center of the valley-shaped bent portion.

1 is a block diagram of a conventional conveyor apparatus.

2 is a block diagram of a conventional conveyor apparatus.

3 is a block diagram of a conventional conveyor apparatus.

4 is a configuration diagram showing a first embodiment of a conveyor apparatus according to the present invention.

(A), (b), (c) and (d) of FIG. 5 illustrate the moving speed and the positional relationship of the stepping roller in the apparatus shown in FIG. 4, in particular, FIG. Fig. 5 (b) is a diagram showing a position where the moving speed of the stepping roller becomes the pitch original speed Vt of the drive sprocket, and Fig. 5 (c). Fig. 5 is a view showing the position where the moving speed of the stepping roller becomes the average speed Vo, and Fig. 5 (d) is a view schematically showing the formation position of the mountain-shaped bent portion.

FIG. 6 is a schematic diagram illustrating the shape formation of a bent portion in the apparatus shown in FIG. 4. FIG.

(A), (b), (c), and (d) of FIG. 7 show the movement speed of the stepping roller and the stepping roller when the stepping roller sandwiches the elastic member around the shaft in the apparatus shown in FIG. 4. And a pressure exertion acting between the stepping guide rail and the pressing member, and a shape explanatory diagram of the stepping roller and the stepping guide rail and the pressing member, in particular, FIG. 7A illustrates a moving speed according to the position of the stepping roller. Fig. 7B is an explanatory view of the pressing force acting on the stepping guide rail of the stepping roller, Fig. 7C is an explanatory view of the pressing force acting on the pressing member of the stepping roller, Fig. 7 (D) is a schematic diagram showing the shape of the bent portion and the pressing member corresponding to the stepping roller having an elastic member.

FIG. 8A is an enlarged view illustrating main parts of FIG. 7, and FIG. 8B is a cross-sectional view taken along arrow A-A of FIG. 7.

9 is a configuration diagram showing an example of the use of the movable rail 21 in the first embodiment shown in FIG.

(A), (b), (c) and (d) of FIG. 10 have described a second embodiment of the conveyor apparatus according to the present invention, and in particular, FIG. 10 (b) is an explanatory diagram of the pressing force acting on the stepping guide rail of the stepping roller, and FIG. 10 (c) is an explanatory diagram of the pressing force acting on the pressing member of the stepping roller; Fig. 10D is a schematic diagram illustrating the shapes of the bent portion and the pressing member corresponding to the stepping roller having the elastic member.

11 is an enlarged view illustrating main parts of FIG. 10;

12 (a), (b), (c) and (d) illustrate a third embodiment of the conveyor apparatus according to the present invention, and in particular, FIG. 12 (a) is based on the position of the stepping roller. Fig. 12 (b) shows a position where the moving speed of the stepping roller becomes the pitch original speed Vt of the drive sprocket, and Fig. 12 (c) shows the moving speed of the stepping roller as the average speed. Fig. 12 (d) is a schematic diagram illustrating the formation shape of the mountain-shaped bent portion.

FIG. 13 is a schematic view for explaining shape formation of a bent portion in the apparatus illustrated in FIG. 12. FIG.

(A) and (b) of FIG. 14 show the movement speed of the stepping roller, the stepping roller, the stepping guide rail, and the pressing when the stepping roller interposes an elastic member around the shaft in the apparatus described in FIG. As the pressure explanatory drawing acting between the members, in particular, FIG. 14A is a change in the moving speed according to the position of the stepping roller, and FIG. 14B is a bent portion corresponding to the stepping roller having the elastic member. And a schematic diagram illustrating the pressing member.

15 is an enlarged view illustrating main parts of the view illustrated in FIG. 12B.

FIG. 16 is a description of a conveyor apparatus by a combination configuration of a bent portion in a stepping guide rail of the conveyor apparatus of the first embodiment shown in FIG. 4 and a bent portion of a stepping guide rail of the conveyor apparatus of the second embodiment shown in FIG. 10. Degree.

17 is a configuration diagram showing a fourth embodiment of the conveyor apparatus according to the present invention.

18 is a configuration diagram showing a fifth embodiment of a conveyor apparatus according to the present invention.

19 is a configuration diagram showing a sixth embodiment of a conveyor apparatus according to the present invention.

The drive sprocket 9 is rotated to the right in FIGS. 17 and 18, but unlike these figures, the drive sprocket 9 is rotated to the left in FIG. 19.

EMBODIMENT OF THE INVENTION Hereinafter, the Example of the conveyor apparatus by this invention is described in detail with reference to FIGS. In addition, the same code | symbol is attached | subjected to the structure same as the conventional structure shown in FIGS. 1-3, and detailed description is abbreviate | omitted.

(First embodiment)

A first embodiment of a conveyor apparatus of the present invention will be described with reference to FIGS. 4 to 8.

As shown in FIG. 4, in the conveyor apparatus 1 of the first embodiment, the stepping roller 5 moves along the stepping guide rail 3, and the stepping roller 5 has a predetermined pitch (link length r). It is connected to the stepping chain (7).

Since the drive sprocket 9 on which the stepping chain 7 is wound rotates under the driving force of the drive motor 8 and the driving chain 10 constituting the rotary drive device, the stepping step 4 is an arrow in the passenger conveying direction. Move in the A direction to carry the passengers.

Stepping in the vicinity of the drive sprocket 9 of the rail main body 3a, in the vicinity of the drive sprocket 9 of the push rail 3b, and in the vicinity of the driven sprocket 11 of the return and return sides of the movable rail 3c. However, in order to suppress the speed nonuniformity in the roller 5 or to suppress generation | occurrence | production of a speed nonuniformity, the mountain shape bend part 17 is provided.

The stepping roller 5 moves through the trajectory along the outer shape of the bent portion 17, but the stepping roller 5 can move properly along the bent portion 17 at a position opposite to the bent portion 17. The recessed part 14 is provided.

The opposite position of the stepping guide rail 3 at the front end of the bent part 17 provided in the vicinity of the forward-side drive sprocket 9 is followed by passage of the bent part 17 of the preceding stepping step roller 5. A pressing member 18 is provided to prevent the stepping roller 5 from lifting, and the upper end of the stepping roller 5 moves while rolling along the lower surface of the pressing member 18.

This pressing member 18 is similarly provided also in the position which opposes in the rear end of the bending part 17 provided in the vicinity of the path side driven sprocket 11 of the movable rail 3c shown in FIG.

By providing the bent portion 17 at least in the vicinity of the path side drive sprocket 9 of the rail main body 3a, and by providing the pressing member 18 at its front end, the speed unevenness of the stepping roller 5 is effectively absorbed. Since it is suppressed, the step 4 connected to the stepping roller 5 can travel smoothly.

Further, the front end points to the ride 1a side that passes first when the stepping step 4 moves along the moving direction A, and the rear end points where the stepping step 4 later passes when the stepping step 4 moves along the moving direction A ( 1b) Point to the side.

In addition, even when the conveyor apparatus 1 is reversely operated by installing the bent portion 17 near the drive sprocket 9 of the pressing rail 3b provided on the return side of the stepping guide rail 3, The movement of the step roller 5 can be made smooth, and the vibration of the step 4 can be suppressed.

Here, the operation principle of the suppression action of the speed unevenness in the bent portion 17 with reference to Figure 5 (a), Figure 5 (b), Figure 5 (c) and Figure 5 (d) and Figure 6 Explain.

When the pitch original speed of the drive sprocket 9 is set to Vt, the stepping rollers 5, 5a, 5b, and 5c are decelerated once from Vt, and then accelerated to return to Vt. The speed nonuniformity shown in (a) occurs.

That is, when the average speed of the stepping roller 5 is Vo, when the stepping rollers 5, 5a, 5b, and 5c are in the position shown in Fig. 5B on the stepping guide rail 3, , The moving speed is Vt, and the leading stepping roller 5 gradually decelerates from this position to the driving sprocket 9 side by a predetermined distance, and the following stepping rollers 5a, 5b, and 5c are shown in FIG. When the position shown in (c) is reached, the moving speed becomes the average speed Vo.

Of the three stepping rollers 5, 5a, 5b, and 5c connected by the stepping chain 7, the three stepping rollers 5a, 5b, and 5c, which are connected to the stepping roller 5 and adjacent to each other, are illustrated. As shown in (b) of 5, when the leading stepping roller 5a approaches the drive sprocket 9 beyond a predetermined position (reference position), the moving speed of the leading stepping roller 5a becomes Delay than average speed.

At this time, when the 2nd stepping roller 5b is installed in the vicinity of the drive sprocket 9 of the stepping guide rail 3, and wants to reach the bending part 17 shown in FIG.5 (d), the bending part 17 Height position of the 2nd stepping-step roller 5b changes with mountain shape (or valley shape) of (circle).

When the height position of the second stepping roller 5b changes, the pitch (link length r) between the stepping rollers 5a, 5b, and 5c is constant, so that the height at the second stepping roller 5b is constant. The third stepping roller 5c approaches the leading stepping roller 5a by the change in position, and the third stepping roller 5c is accelerated.

Thereby, the fall of the movement speed in the leading stepping roller 5a is canceled by the increase of the 3rd stepping roller 5c, and the moving speed of the 3rd stepping roller 5c becomes the average speed Vo. maintain.

When the leading stepping roller 5a advances further, the moving speed of the leading stepping roller 5a is reversed and becomes faster than the average speed Vo. At this time, when the second stepping roller 5b is formed on the top of the bent portion 17 provided on the stepping guide rail 3 (or as described later, the bent portion is valley type), the lower part of the pressing member is disposed. ), The height position of the second stepping roller 5b returns to its original position, the third stepping roller 5c is separated from the leading stepping roller 5a, and the third stepping roller ( 5c) is decelerated.

In this way, the increase in the moving speed at the leading stepping roller 5a is offset by the deceleration of the third stepping roller 5c, and the moving speed after the third stepping roller 5c is at the average speed Vo. maintain.

Therefore, when the position where the moving speed of each stepping roller 5a, 5b, 5c is decelerated from Vt and becomes Vo is set as a reference position, as shown in FIG. 5D, the stepping guide rail 3 The stepped rollers 5b are bent portions 17 by providing curved portions 17 which are curved (or valleys) in the stepping guide rails 3 located between two reference positions adjacent to each other. From the change of the height position by moving along the curved trajectory of (), the speed nonuniformity of the stepping roller 5a which precedes this stepping roller 5b is absorbed, and is moved to the following stepping roller 5c. The stepping roller 5 after the stepping roller 5c is maintained at the average speed Vo to avoid the transfer of speed unevenness.

Next, the specific shape of the bent part 17 formed in order to suppress absorption of a speed nonuniformity is demonstrated with reference to FIG.

The stepping rollers 5 (5a, 5b, 5c) moving beyond the bend 17 to the driving sprocket 9 are lower than the average speed Vo in the process of engaging with the driving sprocket 9 as described above. When the stepping roller 5 having the unevenness but the speed unevenness is referred to as the speed uneven roller 5a, a stepping guide rail (a stepped portion 17) is interposed from the speed uneven roller 5a. The stepping roller 5c positioned second to the front end side (ie, the burner 1a side) of 3) has the bent portion 17 of the stepping roller 5b adjacent to the next step of the speed nonuniformity roller 5a. The stepping roller 5c moves at a constant speed (average speed Vo) without slowing down, because the stepping roller 5c is moved to draw along the stepping roller 5c. In this way, the stepping roller 5 which is expected to be the second and to the constant side of the stepping guide rail 3 at the front end of the stepping guide 17 via the bend 17 from the speed nonuniform roller 5a is here a fixed speed roller ( It is called 5c).

Therefore, as shown in FIG. 6, when each of these stepping rollers 5a, 5b, and 5c moves by one pitch (link length r), the stepping chain 7 is moved from the center of the speed uneven roller 5a. The intersections P1 and P2 of the circle C1 drawn with the link length r as a radius and the circle C2 drawn with the link length r of the step chain 7 as a radius from the center of the constant speed roller 5c are As shown by the dotted line, when making the roller center trace L, it is desired that the bending part 17 is formed in the shape along this roller center trace L. As shown in FIG.

That is, by setting the shape of the bent part 17 as described above, the speed unevenness generated in the speed uneven roller 5a in the process of passing the intermediate stepping roller 5b through the bent part 17 is theoretically determined by the bent part 17. It is completely absorbed by the change of the height position of the stepping roller 5b according to the shape, and it is possible to accurately maintain the moving speed of the constant speed roller 5c at a constant speed (average speed Vo).

Therefore, since the predetermined tension is applied to the stepping chain 7 by the chain tensioning mechanism made up of the spring member 12, the second stepping roller 5b changes its height position along the bend 17. In this case, the third stepping roller 5c is lifted, but lifting is prevented by the pressing member 18 shown in FIG. 4. As a result, the third stepping roller 5c is appropriately increased or decelerated without lifting, and the moving speed of the third stepping roller 5c is maintained at the average speed Vo.

In addition, in FIG.5 (a), FIG.5 (b), FIG.5 (c) and FIG.5 (d), and FIG.6, the height is exaggerated in order to make it easy to understand the shape of the bending part 17. In addition, in FIG. Although the actual height difference is very small, the structure 2 can be miniaturized and the overall thickness of the conveyor apparatus 1 can be realized.

However, in the case where a small speed unevenness (Vo-rωsin (ωt + φ)) is allowed for the stepping roller 5, the height difference of the bent portion 17 can be further reduced.

That is, as shown in FIG. 6, from the speed nonuniform roller 5a which is located between the bend 17 and the drive sprocket 9 and has a speed nonuniformity, the stepped guide rail 3 is provided with the bent part 17 interposed therebetween. The stepping roller 5c positioned second at the front end side (that is, the burner 1a side) moves the intermediate stepping roller 5b along the bent portion 17, whereby a slight speed unevenness Vo − It is assumed that the constant speed roller 5c is expected to be suppressed by rωsin (ωt + φ).

At that time, as described above, when the trajectory where the intersection points P1 and P2 of the circle C1 and the circle C2 advance is set as the roller center trajectory L, the curved portion 17 follows the roller center trajectory L. By forming in a shape, the speed nonuniformity of the stepping roller 5c following the stepping roller 5b which passes through the bending part 17 can be restrained within the allowable range, while making the height difference of the bending part 17 small.

Moreover, in the said velocity nonuniformity (Vo-rωsin (ωt + φ)), (omega) has an angular velocity, t is time, and (phi) has shown a phase difference.

7 (a), 7 (b), 7 (c), and 7 (d) illustrate the operation of the stepping guide rail 3 and the pressing member 18 shown in Fig. 4. As a schematic diagram shown below, the speed nonuniformity periodically occurring in the stepped step 4 shown by the chain line in FIG. 7A is due to the presence of the ridged bend 17 and the pressing member 18. It is suppressed as shown by the solid line at and the back stepping roller 5 is maintained at the average speed Vo.

That is, since the stepping rollers 5 (5a, 5b, 5c) are subjected to the force of the spring member 12 which is a chain tensioning mechanism, the pressing force applied to the mountain-shaped bent part 17 of the stepping guide rail 3 is 7B, the stepping roller 5, which is guided by the lifting preventing pressing member 18 and moves while rolling, resists the lifting force, and is shown in FIG. 7C. As described above, the pressing member 18 is pressed, but all of these pressing pressures (pressing pressures) are maximized at the center portion.

Therefore, as shown in Fig. 7A, when the pitch original speed of the drive sprocket 9 is Vt and the average speed of the stepping roller 5 is Vo, the speed of the stepping roller 5 is from Vt. The positions that decrease to Vo are referred to as reference positions S1, S2, S3,... Shall be.

A plurality of reference positions S1, S2, S3,... Along the stepping guide rails 3. Among them, as shown in FIG. 7D, the stepping guide rail 3 positioned between the reference position S1 located near the drive sprocket 9 and another reference position S2 at the rear adjacent to the reference position S1. ), A mountain shaped bent portion 17 is provided for suppressing occurrence of speed unevenness.

Moreover, the pressing member 18 which abuts with the stepping-step roller 5 which passes through is provided in the opposing position of the front end of the site | part where the bending part 17 of the stepping-step guide rail 3 was provided for lifting prevention.

The pressing member 18 is provided so that the abutting surface is in a straight line shape in order to guide the stepping roller 5 straightly in the horizontal direction between the reference position S2 and the reference position S3, but the stepping guide rail 3 In the stepping guide rail 3 at the opposite position of the pressing member 18 in Fig. 7, as shown in Fig. 7D, the recessed portion 3aa is slightly longer than the link length r of the stepping roller 5; Formed.

The stepping rollers 5 (5a, 5b, 5c, ...) of the first embodiment will be described as having elastic members having flexibility such as rubber around the rotating shaft in order to suppress noise generation during the movement of the rotation. .

Stepping rollers 5 (5a, 5b, 5c, ...) having elastic members around the shaft are pulled in the horizontal direction (opposite to the arrow A in Fig. 4) by the spring member 12 of the chain tensioning mechanism. Therefore, when the stepping roller 5 passes over the mountain-shaped bent portion 17 of the stepping guide rail 3, and the stepping roller 5 is pressed by the pressing member 18, b) and the pressing member of the radial direction toward the rotating shaft of the characteristic shown to FIG. 7C, and the elastic member of the stepping-roller 5 moves, rolling and rolling in correspondence with the pressing force. As a result, the trajectory of the stepping roller 5, which is guided and moved to the bent portion 17 and the pressing member 18 as much as the diameter is shortened by the compression of the elastic member, is far from the trajectory previously set for suppressing the speed unevenness. You lose.

In addition, the pressing force to the elastic member rolls the pressing member 18 as well as not only when the stepping roller 5 (5a, 5b, 5c, ...) moves through the mountain-shaped bent part 17 as mentioned above. When moving while moving, or when moving to the drive sprocket 9 from the step guide rail 3, it is loaded as shown to FIG.7 (b) and FIG.7 (c).

Therefore, in this first embodiment, in response to the elastic member compressed by the load of the pressing force (pressing force) when the stepping guide rail 3 and the pressing member 18 are moved, as shown in FIG. As shown by the oblique line, the shape of the stepping guide rail 3 and the pressing member 18 was formed in advance by the thickness corresponding to the diameter dimension of the stepping roller 5 reduced by the load.

Therefore, in this first embodiment, when the stepping guide rail 3 or the pressing member 18 is moved, the elastic member of the stepping roller 5 is compressed, and the stepping roller 5 by the compressed portion thereof. The trajectory to be changed is changed, but since the shape of the stepping guide rail 3 or the pressing member 18 is formed in advance to correct the change in advance, the stepping roller 5 properly adjusts the speed unevenness. It is possible to move along the trajectory that can be absorbed and suppressed, and the vibration can be suppressed by avoiding the occurrence of the speed unevenness of the stepping roller 5 and the stepping step 4 connected thereto, thereby enabling stable constant speed movement.

In addition, in this first embodiment, as shown in Fig. 7D, the front end of the portion where the mountain-shaped bent portion 17 is formed (that is, between the reference position S2 and the reference position S3), and with the pressing member 18, The recessed part 3aa is provided in the stepping guide rail 3 of the opposing surface.

Therefore, when the stepping roller 5 moves while rolling while contacting the lower surface of the pressing member 18, the stepping roller 5 moves downward by the formation of the recessed part 3aa. Since the stepping roller 5 is vertically inserted from both the pressing member 18 and the stepping guide rail 3, the stepping roller 5 does not rotate smoothly. Not only the stepping roller 5 but also the pressing member 18 and the stepping guide rail 3 can be avoided from being damaged.

The length of the moving direction of the stepping step 4 of the recessed part 3aa formed in the stepping guide rail 3 in the moving direction A of the stepping step 4 shows the recessed part in FIG. 8A. As shown in an enlarged scale), the stepping roller 5 which is set slightly longer than the pitch (link length r) of the moving stepping roller 5 and rolls along the lower surface of the pressing member 18 is moved. It moves smoothly without causing sliding friction by the engagement from the downward direction.

In addition, the pressing member 18 of this 1st Example and the stepping guide rail 3 located correspondingly to this are moved under the biasing force of the spring member 12, as shown to the enlarged view in FIG. The stepping roller 5 does not move up and down and moves smoothly from the stepping guide rail 3 to the pressing member 18 or from the pressing member 18 to the stepping guide rail 3. As such, the left and right entrances and exits in the opposing pressing member 18 and the stepping guide rail 3 are configured to have a tapered shape.

That is, as shown in Fig. 8A, the pressing member 18 forms a tapered shape inclined outward from each of the left and right ends, while the opposing stepping guide rails 3 also have concave portions 3aa. Similarly, the taper shape is inclined inward from each of the left and right end portions (ie, reference positions S2 and S3).

And at the position in the reference position S2, S3 of each edge part, it is located in the substantially middle part of a taper, and as shown, between the stepping-step roller 5, the press member 18, and the stepping-step guide rail 3 which pass through. It is configured to form an approximately equal interval Δd at.

(B) is sectional drawing seen by the arrow A-A of FIG. 8 (a). As shown in FIG. 8B, the pressing member 18 of this embodiment is configured to be attached to a structure 2 such as a truss integrally with the stepping guide rail 3 by a bolt 2a. However, the pressing member 18 may be separated from the stepping guide rail 3 and may be separately attached and fixed to the structure 2 or the like.

Further, in the above first embodiment, the conveyor apparatus 1 has described that the stepping chain 7 is sandwiched between the drive sprocket 9 and the driven sprocket 11, as shown in FIG. 4, but the driven sprocket Instead of (11), as shown in FIG. 9, a stepping chain 7 is to be fastened between the drive sprocket 9 and the movable rail 21 by using a movable rail 21 formed in a substantially U shape. It may be.

In addition, the movable rail 21 has a circular portion in which a portion over which the stepping chain 7 extends has a diameter substantially the same as that of the drive sprocket 9, and each stepping step connected to the stepping chain 7 by its outer circumference. Guide the roller 5 abuts.

Similar to the driven sprocket 11, this movable rail 21 is biased in the direction away from the drive sprocket 9 by the spring member 12 of the chain tensioning mechanism, and is optimal for the stepping chain 7. Impart tension.

Moreover, when the speed rail has the speed nonuniformity in the stepping-roller 5, the movable rail 21 may vibrate in the direction to approach the driving sprocket 9 by the influence, but the path side of this movable rail 21 And by providing the above-mentioned bent part 17 in the return side, the speed nonuniformity of the stepping-roller 5 in this movable rail 21 side is suppressed effectively, and the movable rail 21 as well as the vibration which arises in the stepping-step 4 are carried out. Vibration is effectively suppressed, and the ride comfort of the conveyor apparatus 1 can be made very good.

In addition, the formation of the bent portion 17 on both the return side and the return side of the movable rail 21 is preferable because it can correspond to the reverse operation of the conveyor apparatus 1.

In any case, according to the first embodiment of the above configuration, when the stepping roller 5 is provided with an elastic member around the shaft in order to suppress the generation of noise of the stepping roller 5 that travels and moves, the elastic member In order to avoid that the absorption suppression effect of the speed unevenness due to the compressive deformation is impaired, the mountain curved portion 17 and the pressing member 18 are previously increased by a height corresponding to the compression in the radial direction of the stepping roller 5. Because of the correction, the speed nonuniformity can be appropriately reduced or avoided to provide a conveyor apparatus having a good ride comfort.

In addition, in the said 1st Example, the stepping-roller 5 is made to reduce | reduce a diameter at the time of a travel movement by the elastic member interposed around the shaft, and presses 18 of the opposite side correspond to the reduction part. ) And the stepping guide rail 3 is formed in advance, but the stepping roller 5 itself is formed of a hard material, and when the deformation is not particularly expected, the increased portion Due to the presence of the concave portion 3aa formed in the stepping guide rail 3 without the need for forming a stepping roller, the stepping roller 5 smoothly rolls and moves to provide a good ride comfort in which speed unevenness is suppressed. can do.

Although the first embodiment has described that the stepped bends 17 are provided in the stepped guide rails 3, the valley bends 17 are provided in the stepped guide rails 3 as described above. Similarly, occurrence of speed unevenness can be suppressed.

(Second embodiment)

A conveyor apparatus according to a second embodiment of the present invention having a valley bend formed in the stepping guide rail 3 is shown in FIGS. 10A, 10B, 10C, and 10. Will be described with reference to (d) and FIG. Further, in the conveyor apparatus 1 in the second embodiment, a valley bend is provided in the step guide rail 3 in place of the mountain bend 17 and the pressing member 18 as compared with the first embodiment. Since it differs from 1st Embodiment in the point which provided the press member corresponding to a valley-shaped bend, and since it is common to 1st Embodiment except others, the structure and operation | movement especially at the difference point are demonstrated.

In addition, also in this 2nd Example, the stepping roller 5 is comprised below with the elastic member interposed around an axis, and demonstrates below.

10 (a), 10 (b), 10 (c), and 10 (d) are schematic views corresponding to FIG. 11 describing the first embodiment, and the second embodiment is the first embodiment. Different from the embodiment, in order to suppress the occurrence of speed unevenness, a valley-shaped bent portion 19 is formed in the step guide rail 3.

Therefore, the pitch original speed of the drive sprocket 9 is Vt, and the average speed of the stepping roller 5 which is connected to the stepping chain 7 and moves is Vo, and the speed of the stepping roller 5 is set from Vt. When the position reduced to Vo is a reference position, the reference positions S1, S2, S3,... Which exist in plurality along the stepping guide rails 3. Among them, as shown in FIG. 10D, the second reference position S2 adjacent to the reference position positioned near the drive sprocket 9 and the third reference position S3 adjacent to the reference position are positioned. The valley type bend 19 is installed in the stepping guide rail 3 part.

The pressing member 18A which is in contact with the stepping roller 5 is provided at a position facing the portion where the valley-shaped bent portion 19 of the stepping guide rail 3 is installed, and along the bottom surface of the pressing member 18A. Since the stepping roller 5 is driven while rolling, the occurrence of speed unevenness in the stepping step 4 can be avoided.

That is, the lower surface of the pressing member 18A which the stepping roller 5 abuts is along the roller center trajectory L of FIG. 6 described in the first embodiment. Therefore, when the stepping roller 5 moves while rolling along the lower surface shape of the pressing member 18A, the speed of the following stepping roller 5 is maintained at a constant average speed Vo.

Also in this second embodiment, the stepping roller 5 is tensioned in the running direction by the chain drive mechanism which is the spring member 12, and the stepping roller 5 is driven from the stepping guide rail 3 by the drive sprocket ( Since the pressing force acts between the stepping roller 5 and the stepping guide rail 3 at the time of shifting to 9), as shown in FIGS. 10B and 10C, respectively, traveling A pressing force (pressing force) acts on the stepping guide rail 3 and the pressing member 18A on the moving stepping roller 5.

Therefore, in the second embodiment, the elastic member of the stepping roller 5 is deformed in the radial direction by the pressing force acting as shown in FIGS. 10B and 10C, and the compression is performed. As shown by the diagonal line in FIG. 10 (d), the shape of the stepping guide rail 3 and the pressing member 18A is equivalent to the one whose diameter dimension of the stepping roller 5 is reduced by deformation. The correction is made by increasing.

Therefore, even if the stepping roller 5 is guided to the stepping guide rail 3 and the pressing member 18A and travels, and the elastic member is compressed, the stepping roller 5 causes the speed nonuniformity to be corrected. Since it travels appropriately along the trajectory which can suppress and absorb suitably, as shown by the solid line in FIG.10 (a), the moving speed of the stepping-roller 5 of the back end from the valley type bend 19 is an average. The speed is maintained at Vo and stabilized.

In the second embodiment, the valley-shaped bent portion 19 of the stepping guide rail 3 located at the corresponding position of the pressing member 18A is a stepping guide rail ( The area corresponding to the section in which the stepping roller 5 is in contact with the pressing member 18A is formed to be slightly longer than the pitch (link length r) of the stepping roller 5 of 3). The recessed part 3ab of depth d is provided so that it may be cut out.

Therefore, in this second embodiment, since the recessed portion 3ab of depth d is formed in the valley-like bent portion 19, the stepping roller 5 moving while rolling along the lower surface of the pressing member 18A is stepped. Pressing in contact with the guide rail 3 is avoided, and since the stepped guide rail 3 is not pinched from below, the stepping roller 5 suppresses the speed irregularity formed in the pressing member 18A. It can move while rolling smoothly along the shape.

Thus, since the stepping roller 5 moving along the lower surface of the pressing member 18A is not pressed from the stepping guide rail 3 side, the stepping roller 5 as well as the pressing member 18A and the stepping step It can also be avoided that the guide rail 3 is damaged by friction.

In addition, as shown in FIG. 11, at the entrance of the left and right ends of the pressing member 18A and the opposing valley-shaped bent portion 19, the pressing member 18 forms a tapered shape inclined outward. On the other hand, the opposing stepping guide rails 3 are also configured to have a tapered shape inclined inwardly so as to be connected to the recesses 3ab.

Further, at the positions of the left and right reference positions S2 and S3, the pressing member 18A and the stepping guide rail 3 are configured to have a substantially equal distance Δd between the stepping rollers 5 passing through them. It is.

Therefore, the tension acts on the stepping chain 7 by the tension force of the spring member 12, so that the stepping chain 7 and the stepping roller 5 try to extend straight and straight in the horizontal direction. Since the distance Δd can be provided, the guide of the stepping roller 5 is moved from the stepping guide rail 3 to the pressing member 18 or from the pressing member 18 to the stepping guide rail 3. Take over as smoothly.

Also in this second embodiment, in the case where the stepping roller 5 does not have a flexible member such as rubber around the shaft, the augmentation correction in the pressing member 18A and the stepping guide rail 3 is not performed. The speed nonuniformity can be appropriately suppressed and absorbed, and the stepped roller 5 or the like can be moved while rolling satisfactorily by the presence of the concave portion 3ab.

In addition, the pressing member 18A can be integrally attached to the stepping guide rail 3 or the structure 2 similarly to the pressing member 18 in the first embodiment.

Next, in the above-described first embodiment, the stepped bend 17 is provided on the stepping guide rail 3 between the reference position S1 and the reference position S, but the stepping guide between the reference position S1 and the drive sprocket 9 is provided. Mounted bends 17 are provided on the rail 3 to suppress the speed unevenness of the stepping rollers 5, thereby ensuring a good ride comfort and thinning of the entire apparatus.

(Third embodiment)

A third embodiment of the conveyor apparatus of the present invention, in which the mountain-shaped bent portion 17 is provided at the step guide rail 3 between the reference position S1 and the drive sprocket 9, which is the reference position closest to the drive sprocket 9, This will be described with reference to FIGS. 12 to 15. In addition, only the point different from the structure in 1st Example is demonstrated here especially.

12 is an explanatory diagram corresponding to FIG. 5 of the first embodiment. As shown in FIG. 12, the reference positions S1, S2, S3,... Which exist in plurality along the stepping guide rails 3. When the point on the drive sprocket 9 separated from the reference position S1 closest to the drive sprocket 9 by the pitch (link length r) of the step chain 7 is made into a drive origin, this drive origin and reference | standard A stepped bend 20 protruding toward the stepping step 4 is provided on the stepping guide rail 3 between the positions S1 to suppress or absorb the speed unevenness in the stepping step 4.

The driving starting point is a starting point at which the stepping roller 5 shifts from the stepping guide rail 3 to the driving sprocket 9 and is transported at the original speed Vt by the driving sprocket 9, and the driving sprocket ( It is located above the drive sprocket 9 spaced apart from the reference position S1 closest to 9) by the pitch (link length r) of the stepping chain 7.

The basic operation of the conveyor apparatus according to the third embodiment will be described with reference to FIGS. 12 and 13 in addition to FIG. 4.

Focusing on the three stepping rollers adjacent to each other among the stepping rollers 5 connected by the stepping chain 7, the leading stepping roller 51a is connected to the drive sprocket 9 as shown in FIG. When approaching and exceeding a predetermined position (reference position), the moving speed of this leading step roller 51a is delayed from the average speed. At this time, when the second stepping roller 51b reaches the mountain-shaped bend 20 between the reference position S1 closest to the drive sprocket 9 and the driving point, the second stepping along the mountain-shaped shape of the bend 20 is performed. However, the height position of the roller 51b is changed.

When the height position of the second stepping roller 51b is changed, the pitch (link length r) between the stepping rollers 5 is constant, so as to change the height position of the second stepping roller 51b. The third stepping roller 51c approaches the leading stepping roller 51a, and the third stepping roller 51c is accelerated. As a result, the decrease in the moving speed of the leading stepping roller 51a is offset by the increase of the third stepping roller 51c, and the moving speed of the third stepping roller 51c is the average speed Vo. maintain.

When the leading stepping roller 51a advances earlier, the moving speed of the leading stepping roller 51a is reversed and becomes faster than the average speed. At this time, since the 2nd stepping roller 51b exceeds the mountain-shaped bent part 20 provided in the stepping guide rail 3, the height position of the 2nd stepping roller 51b returns to the original, and the 3rd stepping step The roller 51c is spaced apart from the leading stepping roller 51a and decelerated. As a result, the increase in the moving speed of the leading stepping roller 51a is offset by the deceleration of the third stepping roller 51c, and the moving speed of the third stepping roller 51c is maintained at the average speed Vo. do.

As described above, according to the conveyor apparatus 1 according to the third embodiment, the stepping guide rail 3 positioned between the reference position S1 closest to the drive sprocket 9 and the driving origin on the drive sprocket 9 is provided. The mountain-shaped bend portion 20 is installed in the c), so as to absorb the speed nonuniformity generated in the preceding stepping roller 51a, and to not be transferred to the following stepping rollers 51c, 51d,... The moving speed of the stepping step 4 is maintained at almost the average speed Vo, thereby ensuring a good ride comfort.

In addition, since the height of the mountain-shaped bent part 20 provided in the stepping guide rail 3 does not need to actually be very high here, it is advantageous in realizing the thinning of the whole apparatus.

Here, the optimum shape of the mountain-shaped bent part 20 in this 2nd Example is demonstrated with reference to FIG.

The stepping roller 51a moved beyond the bend 20 toward the driving sprocket 9 is engaged with the driving sprocket 9 at the driving origin on the driving sprocket 9, whereby the movement speed of the driving sprocket 9 is increased. It becomes equal to the pitch original speed Vt.

At the starting point of drive, the stepping roller 5 at which the moving speed becomes Vt is referred to herein as a sprocket roller 51a for convenience.

Moreover, the 2nd stepping roller 51c is moved from the sprocket roller 51a to the front end side of the stepping guide rail 3 (the burner 1a side of the conveyor apparatus 1) with the bend 20 interposed therebetween. The sprocket roller 51a and the stepping roller 51b adjacent to each other move at a constant speed (average speed Vo) by moving along the bend portion 20.

Therefore, the stepping roller 51c, which is expected to be a second and forward speed of the stepping guide rail 3 with the bent portion 20 therebetween from the sprocket roller 51a, is here referred to as a constant speed roller for convenience. It is called.

When each stepping roller 51a, 51b, 51c moves by one pitch (link length r), a circle C1 drawn with the link length r of the stepping chain 7 as a radius from the center of the sprocket roller 51a. ) And the trajectory of the intersection P1 of the circle C2 drawn with the link length r of the stepping chain 7 as a radius from the center of the constant speed roller 51c as the roller center trajectory L, the bent portion. 20 is preferably formed in the shape along this roller center trace L. As shown in FIG.

By setting the shape of the bent portion 20 to follow the roller center trajectory L, the speed nonuniformity generated in the sprocket roller 51a in the course of passing the stepped roller 51b through the bent portion 20 is theoretically formed by a curved bent portion ( It is completely absorbed by the change in the height position of the stepping roller 51b according to the shape of 20, so that the moving speed of the constant speed roller 51c can be maintained exactly at a constant speed (average speed Vo).

Here, suppose that when the number of teeth of the drive sprocket 9 is 16 pieces and the link length of the step chain 7 is 135 mm, the bent part 20 is formed in the shape along the roller center trace L mentioned above, In the trial by the inventor, the height difference of the bend 20 becomes only 1.53 mm from the upper surface of the stepped guide rail 3.

As described above, in the conveyor apparatus 1 according to the third embodiment, at the stepped guide rail 3 sited between the reference position closest to the drive sprocket 9 and the drive origin on the drive sprocket 9, The bent portion 20 is formed by forming the bent portion 20 in the shape along the above-described center trajectory L, and the stepped roller 5 connected by the stepped chain 7 passes through the bent portion 20. The moving speed after the stepping roller 5c subsequent to the stepping roller 5b passing through) becomes constant, and the vibration of the stepping step 4 can be effectively suppressed to ensure a good ride comfort.

Also in this third embodiment, similarly to the first embodiment, in the case where a small speed unevenness (Vo-rωsin (ωt + φ)) is allowed for the stepping roller 5, the height difference of the mountain-shaped bend 20 is It can form in a smaller shape.

That is, by engaging the drive sprocket 9 at the driving starting point, the stepping roller 5 whose movement speed becomes Vt is used as the sprocket roller 51a as described above, and the bent portion 20 is removed from the sprocket roller 51a. It is the 2nd stepping roller 5c by the front end side of the stepping guide rail 9 (the burner 1a side of the conveyor apparatus 1), and the stepping roller adjacent to the sprocket roller 51a ( When 51b) moves along the bend 20, the stepping roller 5, which is expected to be suppressed by a small speed unevenness (Vo-rωsin (ωt + φ)) is approximately a constant speed roller 51c. When these stepping rollers 51a, 51b, 51c move by one pitch (link length r), a circle is drawn with the link length r of the stepping chain 7 as a radius from the center of the sprocket roller 51a. (C1) and the link length r of the stepping chain 7 from the center of the constant speed roller 51c to a radius When the trajectory P1 of the circle C2 to be drawn advances as the roller center trajectory L, the bent portion 20 is formed in a shape along the roller center trajectory L, thereby raising the height difference of the bent portion 20. It is possible to reduce the speed nonuniformity of the stepping roller 5 subsequent to the stepping roller 5 passing through the bent portion 20 within the allowable range while reducing the overall thickness of the conveyor apparatus 1.

Next, a specific structure and operation of the conveyor apparatus 1 according to the third embodiment will be described with reference to FIGS. 14A and 14B.

The following description focuses on three stepping rollers 51a, 51b, and 51c adjacent to each other connected by the stepping chain 7.

As described above, when the leading stepping roller 51a reaches the driving starting point on the driving sprocket 9 and reaches the pitch original speed Vt, the second stepping roller 51b reaches the mountain-shaped bent portion 20. The third stepping roller 51c is moved as much as the change in the height position of the second stepping roller 51b by the change of the height position of the second stepping roller 51b by changing the height position. The leading stepping roller 51a is approached, and the third stepping roller 51c is accelerated.

In this way, the decrease in the moving speed of the stepping roller 51b is offset by the increased speed of the stepping roller 51c, and the moving speed of the stepping roller 51c is maintained at the average speed Vo, but the mountain-shaped bent portion 20 is Considering the case where it is not provided, when the leading stepping roller 51a advances faster, the moving speed of the second stepping roller 51b will be reversed and become faster than the average speed Vo.

However, in the third embodiment, since the second stepped roller 51b passes over the mountain shaped bent portion 20 by the mountain curved portion 20 between the driving origin and the reference position S1, the second stepped roller 51b. ), The height position is returned to its original position, the third stepping roller 51c is separated from the leading stepping roller 51a, and the third stepping roller 51c is decelerated, whereby the second stepping roller The increase in the moving speed of 51b is offset by the deceleration of the third stepping roller 51c, and the moving speed of the third stepping roller 51c is maintained at the average speed Vo.

In addition, although predetermined tension is given to the stepping chain 7 by the chain tensioning mechanism which consists of the spring member 12 mentioned above, the 3rd stepping roller 51c is not shown in FIG.14 (b). Lifting is prevented by the pressing member 18 shown. Accordingly, even when the height of the second stepping roller 51b is changed along the bend 20, the third stepping roller 51c is appropriately increased and decreased, and the third stepping roller 51c is provided. The moving speed of is surely maintained at the average speed Vo.

Next, in this third embodiment, the stepping guide rail 3 and the pressing member (in the case of adopting a stepping roller 5 having an elastic member disposed around the rotation axis and suppressing the occurrence of noise and the like) The shape correction of 18) will be described.

That is, when the stepping roller 5 is in contact with the stepping guide rail 3 and the pressing member 18, the step of engaging the stepping roller 5 to the drive sprocket 9, and the mountain-shaped bend 20 The elastic member is compressed by the pressing force against the stepping guide rails 3 and the pressing member 18 of the stepping roller 5 in the action of suppressing the speed unevenness of the stepping step 4 in.

In order to correct the track | orbit shift of the stepping roller 5 according to the compression of this elastic member, the shape of the contact surface of the stepping guide roller 3 and the stepping roller 5 of the pressing member 18 is prepared previously. As in the first embodiment, correction is made by increasing the diagonal lines as shown in Fig. 14B.

That is, as shown in Fig. 14A, the pitch original speed of the drive sprocket 9 is Vt, and the average speed of the stepping roller 5 which is connected to the stepping chain 7 and moves is Vo, When the position where the speed of the stepping roller 5 is reduced from Vt to Vo is set as the reference position, the reference position S1 closest to the drive sprocket 9 and the pitch of the stepping chain 7 from this reference position S1 ( The stepping roller 5 and the position opposite to the front end of the bent portion 20 provided in the stepping guide rail 3 positioned between the driving origin on the driving sprocket 9 separated by the link length r). Abutting member 18 is provided.

In order to keep the moving speed of the 3rd stepping roller 51c reliably at the average speed Vo, the lowering position 1b on the stepping guide rail 3 necessary to prevent the lifting of at least the 3rd stepping roller 51c. When the position on the side of PL is PL, a linear pressing member 18 is disposed opposite the stepping guide rail 3 so as to span between the position PL and the reference position S2.

And similarly to the first embodiment, the stepping roller 5 is recessed in the stepping guide rail 3 so that the stepping roller 5 does not come into contact with the stepping roller 5 even when the stepping roller 5 rotates while contacting the lower surface of the pressing member 18. A portion 3ac is formed.

In the configuration shown in Figs. 14A and 14B, when the stepping rollers 5 (51a, 51b, 51c, ...) are positioned at the reference position S1 and the reference position S2, the stepping chain (7) is in a state extending straight in the horizontal direction, the stepping rollers 5 (51a, 51b, 51c, ...) are rotated while contacting the lower surface of the pressing member 18, the stepping guide rail (3) Since the recessed part 3ac is formed in this, even if the tension | tensile_strength by the chain tension mechanism acted on the stepping chain 7, the stepping roller 5 is not pressed from the stepping guide rail 3 side.

If the stepping roller 5 has an elastic member formed around the shaft, like step 1, the stepping roller 5 is formed between the stepping roller 5, the stepping guide rail 3, and the pressing member 18 (b) of FIG. As indicated by the broken line in Fig. 2), the pressing force acts to reduce the diameter of the stepping roller 5.

Also in this third embodiment, since the lower surface shape of the pressing member 18 and the bent portion 20 of the stepping guide rail 3 are formed by a height corresponding to the reduction in the diameter of the stepping roller 5, The stepping roller 5 can travel along a predetermined trajectory to prevent speed unevenness.

Thus, even in the third embodiment in which the mountain-shaped bent portion 20 is provided between the driving starting point and the reference position S1, the stepping rollers 5 are uneven in speed even if the stepping rollers 5 have elastic members around the shaft. Since the recess 3c of depth d is provided in the stepping guide rail 3 at the opposite position of the pressing member 18 while appropriately passing through a predetermined trajectory for suppressing the occurrence, the stepping roller 5 ) Can be rolled smoothly without being pinched from the up and down direction.

In addition, in this third embodiment, the main parts of FIGS. 14A and 14B are enlarged in FIG. 15 to concave at the opposing positions of the pressing member 18 and the pressing member 18. The stepping guide rails 3 having the portions 3ac form tapered shapes at the left and right entrances and exits through which the stepping rollers 5 enter and exit, and are approximately equal up and down at the position PL and the reference position S2. Since the space | interval Δd is formed, the stepping roller 5 can move in and out smoothly while maintaining the state where the stepping chain 7 extends straight in the horizontal direction.

However, also in this third embodiment, when the stepping roller 5 does not have an elastic member formed around the shaft, it is not necessary to form an increase shown by diagonal lines in FIGS. 14B and 15, Since the stepping roller 5 moves smoothly along the lower surface of the pressing member 18 due to the presence of the recessed portion 3ac of the depth d provided in the stepping guide rail 3, the stepping roller or the like. Damage can be avoided.

In addition, in the description of each of the above embodiments, each of the mountain bends or the valley bends is individually employed, but as shown in FIG. 16, the mountain bends 20 of the first (or third) embodiment and the valleys of the second embodiment are shown. The bends 19 can be connected to each other in the travel direction. According to the configuration in which the mountain-shaped bends 20 and the valley-like bends 19 are connected to each other, the same speed unevenness can be suppressed by absorption, and can be realized at a low mountain height and a shallow valley depth. The pressing force between the guide rail 3 and the pressing member 18A, that is, the mechanical load can be reduced. Further, the order of connecting the mountain bend 20 of the first (or third) embodiment and the valley bend 19 of the second embodiment to each other may be reversed.

However, when the first (or third) embodiment and the second embodiment are combined, the height distance of the hill form of the first (or third) embodiment and the valley depth depth of the second embodiment, that is, the pressing member The height distance of the mountain of (18A)) may be configured to be in a constant ratio relationship, and the height of the other valley (from the height of the one of the mountains or valleys) Depth) or the height distance of the mountain.

In addition, in each embodiment of the above description, the conveyor apparatus has been described taking a moving walk as an example, but the present invention is also applicable to an escalator installed on the upper and lower floors of a building to carry passengers.

As explained above, according to the conveyor apparatus of this invention, when the stepping roller 5 is comprised through the elastic member around the rotating shaft, when at least the height of the center part of a mountain curved part, or the valley type curved part is provided, Since the height of the center portion of the pressing member is corrected, the stepping roller 5 does not move up and down, and can pass through a predetermined trajectory while suppressing the occurrence of speed unevenness while realizing overall thinning.

Moreover, since the recessed parts 3aa, 3ab, 3ac were provided in the stepping guide rail 3 facing the pressing member 18 or the pressing member 18A, the stepping roller 5 has an elastic member around the rotation axis. Speed difference in the stepping step 4 by avoiding damage to the pressing member 18, the pressing member 18A and the stepping guide rail 3 as well as the stepping roller 5 It is possible to provide a conveyor apparatus having a good ride comfort in which the occurrence of.

(Example 4)

A fourth embodiment of the conveyor apparatus of the present invention in which the stepped bend portion 20 is provided on the stepping guide rail 3 will be described in comparison with FIGS. 17 and 2. In addition, only the point different from the structure in 1st Example is demonstrated here especially.

2 is an explanatory diagram corresponding to FIG. 5 of the first embodiment, which is a configuration diagram of a conventional conveyor apparatus. As shown in FIG. 2, reference positions S1, S2, S3,... Which exist in plurality along the stepping guide rail 3. The stepping step of the mountain-shaped bent part 20 which protrudes toward the stepping step 4 (not shown) side between the reference position S1 located in the vicinity of the drive sprocket 9, and the other reference position S2 adjacent to this reference position S1. It is provided in the guide rail 3, and the speed nonuniformity in the step 4 is suppressed or absorbed. In this case, since the stepping chains before and after the stepping rollers at the joint S2 to the mountain bending portions 20 are straight, the following stepping rollers cannot follow even a slight speed change, and thus the mountain bending portions 20 The joint S2 to) becomes a bending point at an angle α, and an impact occurs on the stepping roller passing therethrough.

17 is a configuration diagram of the fourth embodiment. Since the height of the step guide rail 3 on the side farther from the drive sprocket 9 of the mountain curved portion 20 is offset by δ below the height of the mountain curved portion 20, the joint portion to the mountain curved portion 20 ( The stepping chain before and after the stepping roller in S2) is not straight. As a result, the joint S2 to the mountain-shaped bent portion 20 is in a smooth shape without being bent.

The basic operation of the conveyor apparatus according to the fourth embodiment will be described with reference to FIG. 17.

When focusing on three stepping rollers adjacent to each other among the stepping rollers 5 connected by the stepping chain 7, the leading stepping roller 51a approaches the drive sprocket 9, and a predetermined position (reference When the position S2 is exceeded, the moving speed of the leading stepping roller 51a is delayed from the average speed. At this time, when the second stepping roller 51b reaches the mountain-shaped bend 20 between the reference positions, the height position of the second stepping roller 51b is changed along the mountain shape of the bend 20.

When the height position of the second stepping roller 51b is changed, the pitch (link length r) between the stepping rollers 5 is constant, so as to change the height position of the second stepping roller 51b. The third stepping roller 51c approaches the leading stepping roller 51a, and the third stepping roller 51c is accelerated. This deceleration cancels the deceleration of the moving speed, and the moving speed of the third stepping roller 51c is maintained at the average speed Vo.

By the way, FIG. 17 has shown the state which the 2nd stepping roller 51b further progresses and goes down beyond a vertex. When the height position is changed to the lower side, the pitch (link length r) between the stepping rollers 5 is constant, so that the third stepping roller 51c by the change in the height position of the second stepping roller 51b is provided. ) Moves away from the leading stepping roller 51a, and the third stepping roller 51c is decelerated. The deceleration of the moving speed is canceled by this deceleration, and the moving speed of the stepping roller 51c is maintained at the average speed Vo.

By the way, since the height of the step guide rail 3 was offset from the drive sprocket of the mountain curved portion 20 (height δ), the stepping roller 51b at the joint S2 to the mountain curved portion 20 was offset. ) The step chain before and after is not straight. Therefore, the third stepping roller 51c can follow the speed change only by slightly raising and lowering the stepping roller 51b, so that the moving speed of the stepping roller 51c is maintained at the average speed Vo. Thereby, the joint part S2 to the mountain-shaped bent part 20 becomes a smooth shape without bending, and can generate | occur | produce the impact vibration when a stepping roller passes through it.

As described above, according to the conveyor apparatus 1 according to the fourth embodiment, the bent portion 20 is provided on the stepped guide rail 3 positioned between the reference positions, and the joint portion to the bent portion 20 is provided. Since S2 becomes a smooth shape without bending, generation of the impact vibration when the stepping roller passes therethrough can be avoided, and a good ride comfort can be secured.

Further, even when the offset (height δ) of the stepped guide rail 3 is provided on the side away from the drive sprocket 9 of the mountain bend 20, the height of the mountain bend 20 is half of that of the drive sprocket 9. Since only about δ / 2 is increased, it is advantageous to realize thinning of the entire apparatus.

(Example 5)

A fifth embodiment of the conveyor apparatus of the present invention in which the stepped bend portion 20 is provided on the stepping guide rail 3 will be described with reference to FIGS. 18 and 2. In addition, only the point different from the structure in 1st Example is demonstrated here especially.

18 is a configuration diagram of the fifth embodiment. Since the stepped guide rails 3 were bent so as to fold outward from the center of the mountain bend 20 to the outside from the drive sprocket of the mountain bend 20, at the seam S2 to the mountain bend 20. The stepping chain before and after the stepping roller is not straight. Thereby, the joint S2 to the mountain-shaped bent part 20 becomes a smooth shape without bending.

The basic operation of the conveyor apparatus according to the fifth embodiment will be described.

When focusing on the three stepping rollers adjacent to each other among the stepping rollers connected by the stepping chain 7, the leading stepping roller 51a approaches the drive sprocket 9 and the predetermined position (reference position S2). When exceeding, the moving speed of this leading stepping roller 51a is delayed rather than an average speed. At this time, when the second stepping roller 51b reaches the mountain-shaped bend 20 between the reference positions, the height position of the second stepping roller 51b is changed along the mountain shape of the bend 20.

When the height position of the second stepping roller 51b is changed, the pitch (link length r) between the stepping rollers 5 is constant, so as to change the height position of the second stepping roller 51b. The third stepping roller 51c approaches the leading stepping roller 51a, and the third stepping roller 51c is accelerated. The deceleration is canceled by this increase, and the moving speed of the third stepping roller 51c is maintained at the average speed Vo.

By the way, since the stepped guide rail 3 was bent so that the stepped guide rail 3 could be folded outward from approximately the center of the bent portion 20 from the side away from the drive sprocket 9 of the bent portion 20, The stepping chain before and after the stepping roller 51b at the joint S2 is not straight. Therefore, the third stepping roller 51c can follow the speed change only by slightly raising and lowering the stepping roller 51b, so that the moving speed of the stepping roller 51c is maintained at the average speed Vo. Thereby, the joint part S2 to the mountain-shaped bent part 20 becomes a smooth shape without bending, and can generate | occur | produce the impact vibration when a stepping roller passes through it.

As described above, according to the conveyor apparatus 1 according to the fifth embodiment, the bent portion 20 is provided on the stepped guide rail 3 located between the reference positions, and the joint portion S2 to the bent portion is provided. ) Is configured to have a smooth shape without bending, so that the occurrence of impact vibration when the stepping roller passes therethrough can be avoided, and a good ride comfort can be secured.

In addition, since the bending angle θ of the step guide rail 3 to be folded outward from the center of the bent portion 20 on the side away from the drive sprocket 9 of the bent portion 20 may be minute, the overall thickness of the apparatus can be reduced. It is advantageous to realize.

(Example 6)

A sixth embodiment of the conveyor apparatus of the present invention in which the valley-shaped bent portion 17 is provided on the stepping guide rail 3 will be described with reference to FIGS. 19 and 3. In addition, only the point different from the structure in 1st Example is demonstrated here especially.

3 is an explanatory diagram corresponding to FIG. 5 of the first embodiment, which is a configuration diagram of a conventional conveyor apparatus. 3, reference positions S1, S2, S3,... Which exist in plurality along the stepping guide rail 3. Among the reference position S2 located in the vicinity of the drive sprocket 9 and another reference position S3 adjacent to the reference position S2, the valley-shaped bent portion 20 is located on the side opposite to the step 4 (not shown) side. ) And suppresses or absorbs the speed unevenness in the step 4. In the case of FIG. 3, unlike the above-described embodiment, since the drive sprocket 9 is rotating to the left, the rotary rollers 51a, 51b, 51c move from the left to the right to engage with the drive sprocket 9 (Interlocked) However, in this FIG. 3, of course, the drive sprocket 9 can also be used from the right side. The reason is that escalators, moving walks, and the like are natural, but there is a case in which it is necessary to move left or right (in Fig. 3).

Next, since the stepping chains before and after the stepping rollers at both joints S2 and S3 of the valley-like bend 20 are straightened, the following stepping rollers cannot follow even a slight speed change. The joints S2 and S3 to the valley-shaped bend 20 become the bending point of the angle α ', and an impact occurs on the stepping roller passing therethrough.

19 is a configuration diagram of the sixth embodiment. Since the stepped guide rail 3 is bent so as to be folded inward from the center of the valley bend 20 from the side away from the drive sprocket of the valley bend 20, the joint portion to the valley bend 20 ( The stepping chains before and after the stepping rollers in S2 and S3 are not straight. Thereby, the joint parts S2 and S3 to the valley type curved part 20 become a smooth shape without bending.

The basic operation of the conveyor apparatus according to the sixth embodiment will be described with reference to FIG. 19.

Focusing on the three stepping rollers adjacent to each other among the stepping rollers 5 connected by the stepping chain 7, as shown in FIG. 19, the leading stepping roller 51a is connected to the drive sprocket 9; When approaching and exceeding a predetermined position (reference position S2), the moving speed of the leading step roller 51a is delayed from the average speed. At this time, when the second stepping roller 51b reaches the valley type bend 20 between the reference positions, the height position of the second stepping roller 51b is changed along the valley shape of the bend 20. .

When the height position of the second stepping roller 51b is changed, the pitch (link length r) between the stepping rollers 5 is constant, so as to change the height position of the second stepping roller 51b. The third stepping roller 51c approaches the leading stepping roller 51a, and the third stepping roller 51c is accelerated. The deceleration is canceled by this increase, and the moving speed of the third stepping roller 51c is maintained at the average speed Vo.

However, since the stepped guide rail 3 is bent inward from the center of the valley bend 20 inward from the drive sprocket of the valley bend 20, the valley bend 20 is bent. The stepping chains before and after the stepping rollers 51b at the joints S2 and S3 to) are not straight. Therefore, the third stepping roller 51c can follow the speed change only by slightly raising and lowering the stepping roller 51b, so that the moving speed of the stepping roller 51c is maintained at the average speed Vo. Thereby, the joint parts S2 and S3 to the valley-shaped bend part 20 become a smooth shape without bending, and can generate | occur | produce the impact vibration when a stepping roller passes through it.

As described above, according to the conveyor apparatus 1 according to the sixth embodiment, the valley bend 20 is provided on the stepping guide rail 3 between the reference positions S2 and S3, and the valley bend 20 is provided. Since the joint parts S2 and S3 of a furnace were comprised so that it might become a smooth shape without bending, generation | occurrence | production of the impact vibration at the time of a stepping roller passing through it can be avoided, and a favorable riding comfort can be ensured.

In addition, since the stepped guide rail 3 is folded inward from the center of the valley bend 20 at the side away from the drive sprocket of the valley bend 20, it is advantageous to realize the thinning of the entire apparatus. .

In addition, this invention is not limited to the said Example, It can variously deform and implement in the range which does not deviate from the summary.

According to the conveyor apparatus of this invention, when the stepping roller interposes an elastic member around the axis, by the action of tension, the elastic member of the stepping roller has a mountain curved portion or a valley curved portion in the stepping guide rail. Even if the compression member is deformed in the pressing member corresponding to, the height of the center portion of the curved bent portion or the height of the central portion of the pressing member is increased by the corresponding thickness of the compression deformation, so that the rotational central axis of the stepping roller suppresses the speed unevenness. In order to proceed the predetermined trajectory set in advance, it is possible to suppress the occurrence of speed unevenness.

Moreover, in the conveyor apparatus provided with the mountain-shaped bent part between a reference position, a pressing member is provided in order to guide to a predetermined position without lifting a stepping roller, and a recess is provided in the stepping guide rail which opposes the pressing member. As a result, pinching from the top and the bottom of the stepping roller is avoided. As a result, the stepping roller can move while rolling smoothly along the pressing member surface, and the damage of the pressing member or the stepping guide rail as well as the stepping roller can be avoided.

Moreover, since the pressing member which abuts with the stepping-roller at the opposite position of the valley-shaped bend of the stepping guide rail was provided, and the recessed part was formed in the valley-shaped bend of the stepping guide rail, the pinch from the top and bottom with respect to the stepping roller is Avoided. As a result, the stepping roller can move smoothly along the pressing member surface, and the damage of the pressing member and the stepping guide rail as well as the stepping roller can be avoided.

And as a conveyor apparatus provided with the mountain-shaped bent part between a reference position and a driving starting point, in order to prevent lifting of the stepping roller and to suppress generation | occurrence | production of the speed nonuniformity of a stepping step, while providing the pressing member which contact | connects a stepping roller, Since a recess is provided in the stepping guide rail at a position opposite to the pressing member, pinching from the top and the bottom of the stepping roller is avoided, and the stepping roller moves smoothly along the pressing member surface to move the stepping roller. Of course, damage to the pressing member and the stepping guide rail can be avoided.

In addition, in the conveyor apparatus provided with the bent part between the reference positions, since the height of the step guide rail was offset below the height of the bent part at the side away from the drive sprocket of the bent part, at the joint part to the bent part, The stepping chain before and after the stepping roller of the roller is not straight. Thereby, since the joint part to a mountain-shaped bent part becomes a smooth shape without bending, generation | occurrence | production of the impact vibration when a stepping roller passes through it can be avoided.

Moreover, in the conveyor apparatus provided with the mountain bend between the reference positions, since the stepped guide rail was bent so as to fold outward from the approximately center of the mountain bend at the side away from the drive sprocket of the mountain bend, the joint to the mountain bend was formed. The stepping chain before and after the stepping roller in the part is not straight. Thereby, since the joint part to a mountain-shaped bent part becomes a smooth shape without bending, generation | occurrence | production of the impact vibration when a stepping roller passes through it can be avoided.

Moreover, in the conveyor apparatus provided with the valley type bend between the reference positions, since the stepped guide rail was bent so that it might be folded inward from the substantially center of the valley type bend on the side far from the drive sprocket of the valley type bend, The step chains before and after the step rollers at the joints to the bends are not straight. Thereby, since the joint part to a valley-shaped bent part becomes a smooth shape without bending, generation | occurrence | production of the impact vibration when a stepping roller passes through it can be avoided.

Claims (20)

A plurality of stepping steps having a stepping roller, A stepping chain for connecting the stepping roller to a predetermined pitch; A rotation driving device for generating a driving force for moving the stepping step in a predetermined direction; In the conveyor apparatus provided with the drive sprocket which rotates by receiving the driving force of this rotary drive, and transmits a driving force to the said stepping chain, The pitch original speed of the drive sprocket is Vt, and the average speed of the stepping roller connected to the stepping chain and moving is Vo, and the position at which the speed of the stepping roller is decreased from Vt to Vo is referred to as the reference position. At this time, a stepping step for guiding the stepping roller by providing a mountain-shaped bend between a reference position positioned near the drive sprocket among the plurality of the reference positions existing and the other reference position adjacent to the reference position. With guide rails, A pressing member provided to abut against the stepping roller at a position opposite to the front end of the portion where the mountain-shaped bend is provided; The stepping roller is formed with an elastic member around an axis, The stepping guide rail is formed by increasing the height of the central portion of the mountain-shaped bent portion by an amount corresponding to the compression amount in the radial direction of the stepping roller of the elastic member. A plurality of stepping steps having a stepping roller, A stepping chain for connecting the stepping roller to a predetermined pitch; A rotation driving device for generating a driving force for moving the stepping step in a predetermined direction; In the conveyor apparatus provided with the drive sprocket which rotates by receiving the driving force of this rotation drive apparatus, and transmits a driving force to the said stepping chain, The pitch original speed of the drive sprocket is Vt, and the average speed of the stepping roller connected to the stepping chain and moving is Vo. At this time, a mountain-shaped bent portion is provided between a reference position closest to the drive sprocket among the plurality of reference positions existing and a driving origin on the drive sprocket separated from the reference position by the link length of the stepping chain. And a stepping guide rail for guiding the stepping roller, And a pressing member provided to abut against the stepping roller at an opposite position of the front end of the portion where the mountain bent portion is installed, The stepping roller is formed with an elastic member around an axis, The stepping guide rail is formed by increasing the height of the central portion of the mountain-shaped bent portion by an amount corresponding to the compression amount in the radial direction of the stepping roller of the elastic member. A plurality of stepping steps having a stepping roller, A stepping chain for connecting the stepping roller to a predetermined pitch; A rotation driving device for generating a driving force for moving the stepping step in a predetermined direction; In the conveyor apparatus provided with the drive sprocket which rotates by receiving the driving force of this rotation drive apparatus, and transmits a driving force to the said stepping chain, The pitch original speed of the drive sprocket is Vt, and the average speed of the stepping roller connected to the stepping chain and moving is Vo, and the position at which the speed of the stepping roller is decreased from Vt to Vo is referred to as the reference position. At this time, a step for guiding the stepping roller by providing a valley bend between a reference position positioned near the driving sprocket among the plurality of the reference positions existing and another reference position adjacent to the reference position. With guide rail, It is provided with a pressing member installed in contact with the stepping roller at the opposite position of the valley bent, The stepping roller is formed with an elastic member around an axis, And the pressing member is formed by increasing the height of the central portion toward the valley-shaped bent portion by an amount corresponding to the compression amount in the radial direction of the stepping roller of the elastic member. A plurality of stepping steps having a stepping roller, A stepping chain for connecting the stepping roller to a predetermined pitch; A rotation driving device for generating a driving force for moving the stepping step in a predetermined direction; In the conveyor apparatus provided with the drive sprocket which rotates by receiving the driving force of this rotation drive apparatus, and transmits a driving force to the said stepping chain, The pitch original speed of the drive sprocket is Vt, and the average speed of the stepping roller connected to the stepping chain and moving is Vo, and the position at which the speed of the stepping roller is decreased from Vt to Vo is referred to as the reference position. A stepping guide rail for guiding the stepping rollers by providing a bent portion between a reference position positioned near the drive sprocket and another reference position adjacent to the reference position among the plurality of the reference positions existing; And a pressing member provided to abut against the stepping roller at an opposite position of the front end of the portion where the mountain bent portion is installed, The stepping guide rail is a conveyor apparatus forming a recess on the opposite surface to the pressing member. A plurality of stepping steps having a stepping roller, A stepping chain for connecting the stepping roller to a predetermined pitch; A rotation driving device for generating a driving force for moving the stepping step in a predetermined direction; In the conveyor apparatus provided with the drive sprocket which rotates by receiving the driving force of this rotation drive apparatus, and transmits a driving force to the said stepping chain, The pitch original speed of the drive sprocket is Vt, and the average speed of the stepping roller connected to the stepping chain and moving is Vo, and the position at which the speed of the stepping roller is decreased from Vt to Vo is referred to as the reference position. And a stepping guide rail for guiding the stepping roller by providing a valley bend between a reference position positioned near the drive sprocket and another reference position adjacent to the reference position among the plurality of the reference positions. , It is provided with a pressing member installed in contact with the stepping roller at the opposite position of the valley bent, The stepping guide rail is a conveyor device to form a recess in the valley-like bent portion. The method of claim 5, The pressing member has a tapered shape inclined outwardly at both ends in the stepping direction moving direction, The concave portion of the stepping guide rail forms a tapered shape inclined inward at corresponding positions of both ends of the pressing member, And said stepping roller is configured to pass through at substantially equal intervals between said pressing member and said stepping guide rail at positions of both ends forming said tapered shape. The method according to claim 5 or 6, The stepping roller is formed with an elastic member around an axis, And the pressing member is formed so as to protrude the contact surface with the stepping roller at the center portion by an amount corresponding to the compression amount in the radial direction of the stepping roller of the elastic member. A plurality of stepping steps having a stepping roller, A stepping chain for connecting the stepping roller to a predetermined pitch; A rotation driving device for generating a driving force for moving the stepping step in a predetermined direction; In the conveyor apparatus provided with the drive sprocket which rotates by receiving the driving force of this rotation drive apparatus, and transmits a driving force to the said stepping chain, The pitch original speed of the drive sprocket is Vt, and the average speed of the stepping roller connected to the stepping chain and moving is Vo, and the position at which the speed of the stepping roller is decreased from Vt to Vo is referred to as the reference position. Wherein a stepped bend is provided between a reference position closest to the drive sprocket among the plurality of reference positions present and a driving origin on the drive sprocket spaced apart from the reference position by the link length of the stepping chain. A stepping guide rail for guiding the step rollers, And a pressing member provided to abut against the stepping roller at an opposite position of the front end of the portion where the mountain bend is provided. The stepping guide rail is a conveyor apparatus forming a recess on the opposite surface to the pressing member. The method according to claim 4 or 8, The pressing member forms a tapered shape inclined outwardly at both ends in the stepping direction moving direction, The concave portion of the stepping guide rail forms a tapered shape inclined inward at the corresponding position of the both end portions, And the stepping rollers are configured to pass at substantially equal intervals between the pressing member and the stepping guide rail at corresponding positions of the both ends. The method according to claim 4 or 8, The stepping roller is formed with an elastic member around an axis, The stepping guide rail is formed by increasing the height of the central portion of the mountain-shaped bent portion by an amount corresponding to the compression amount in the radial direction of the stepping roller of the elastic member. The method of claim 9, The stepping roller is formed with an elastic member around an axis, The stepping guide rail is formed by increasing the height of the central portion of the mountain-shaped bent portion by an amount corresponding to the compression amount in the radial direction of the stepping roller of the elastic member. The method of claim 10, And the pressing member is formed so as to protrude the contact surface with the stepping roller at the center portion by an amount corresponding to the compression amount in the radial direction of the stepping roller of the elastic member. The method according to any one of claims 1 to 6, The stepping guide rail is a stepping roller positioned between the bend and the driving sprocket, and a stepping roller having a speed nonuniformity is a speed nonuniform roller, and the stepping guide rail is disposed between the bent portion from the speed nonuniformity roller. The stepping roller which is a 2nd stepping roller along which it is expected to be constant speed is made into a constant speed roller, and when the said speed nonuniform roller and the said fixed speed roller move for 1 pitch, the stepping step from the center of the said speed nonuniform roller When the moving trajectory of the circle drawn with the link length of the chain as a radius and the intersection point of the circle drawn with the link length of the stepping chain as a radius from the center of the constant speed roller is used as the center of the roller, Conveyor apparatus for forming a curved portion in the shape along the roller center trajectory. The method according to any one of claims 1 to 6, The stepping guide rail is a stepping roller positioned between the bend and the driving sprocket, and a stepping roller having a speed nonuniformity is a speed nonuniform roller, and a second stepping roller is provided between the bent portion from the speed nonuniform roller. And a stepping roller having a small speed nonuniformity allowed to be a substantially constant speed roller, and when the speed nonuniform roller and the approximately constant speed roller move by one pitch, the stepping step from the center of the speed nonuniform roller When the moving trajectory of the circle drawn with the link length of the chain as a radius and the intersection point of the circle drawn with the link length of the stepping chain as a radius from the center of the substantially constant speed roller is taken as the roller center locus, Conveyor apparatus for forming a curved portion in the shape along the roller center trajectory. The method according to any one of claims 1 to 6, The stepping guide rail is a conveyor apparatus that installs the bent portion near the drive sprocket on the feedback side. The method according to any one of claims 1 to 6, A driven sprocket of approximately the same diameter as the drive sprocket, A chain tensioning mechanism for biasing the driven sprocket in a direction away from the drive sprocket and for providing tension to the stepping chain; And a movable rail capable of moving in a direction away from the drive sprocket in cooperation with the driven sprocket in response to the force of the chain tensioning mechanism. The method of claim 16, And the movable rail has a circular portion of approximately the same diameter as the drive sprocket. A plurality of stepping steps having a stepping roller, A stepping chain for connecting the stepping roller to a predetermined pitch; A rotation driving device for generating a driving force for moving the stepping step in a predetermined direction; In the conveyor apparatus provided with the drive sprocket which rotates by receiving the driving force of this rotation drive apparatus, and transmits a driving force to the said stepping chain, The pitch original speed of the drive sprocket is Vt, and the average speed of the stepping roller connected to the stepping chain and moving is Vo, and the position at which the speed of the stepping roller is decreased from Vt to Vo is referred to as the reference position. A stepping guide rail for guiding the stepping rollers by providing a bent portion between a reference position positioned near the drive sprocket and another reference position adjacent to the reference position among the plurality of the reference positions existing; And a pressing member provided to abut against the stepping roller at an opposite position of the front end of the portion where the mountain bend is provided. The conveyor apparatus which offset the height of the said stepped guide rail below the height of the said mountainous bend on the side away from the said drive sprocket of the said mountainous bend. A plurality of stepping steps having a stepping roller, A stepping chain for connecting the stepping roller to a predetermined pitch; A rotation driving device for generating a driving force for moving the stepping step in a predetermined direction; In the conveyor apparatus provided with the drive sprocket which rotates by receiving the driving force of this rotation drive apparatus, and transmits a driving force to the said stepping chain, The pitch original speed of the drive sprocket is Vt, and the average speed of the stepping roller connected to the stepping chain and moving is Vo, and the position at which the speed of the stepping roller is decreased from Vt to Vo is referred to as the reference position. A stepping step guide rail for guiding the stepping roller by providing a bent portion between a reference position positioned near the drive sprocket and another reference position adjacent to the reference position among the plurality of the reference positions existing at the time; And a pressing member provided to abut against the stepping roller at an opposite position of the front end of the portion where the mountain bend is provided. And the stepping guide rail is bent to fold outward from an approximately center of the mountain-shaped bent portion. A plurality of stepping steps having a stepping roller, A stepping chain for connecting the stepping roller to a predetermined pitch; A rotation driving device for generating a driving force for moving the stepping step in a predetermined direction; In the conveyor apparatus provided with the drive sprocket which rotates by receiving the driving force of this rotation drive apparatus, and transmits a driving force to the said stepping chain, The pitch original speed of the drive sprocket is Vt, and the average speed of the stepping roller connected to the stepping chain and moving is Vo, and the position at which the speed of the stepping roller is decreased from Vt to Vo is referred to as the reference position. And a stepping guide rail for guiding the stepping roller by providing a valley bend between a reference position positioned near the drive sprocket and another reference position adjacent to the reference position among the plurality of the reference positions. , A pressing member provided to abut on the stepping roller at an opposite position of the valley-shaped bend; And bending the stepping guide rail to fold inward from an approximately center of the valley-shaped bent portion.

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