JPS5859126A - Article conveyer - Google Patents

Abstract

PURPOSE:To freely lift a self running truck itself by a prescribed distance respectively in hoisting and unloading positions of an article, in an aritcle conveyer in which the article, after being hoisted from a certain position, is horizontally conveyed and unloaded in a different position. CONSTITUTION:Assuming that a self running truck 24 is placed in a full line position in an aritcle hoisting position A, a motor is urged, if an output shaft of a reduction gear 36 is rotated counter clockwise, a pinion 30 is rotated while being meshed to a rack track 20, and the self running truck 24 is started vertically lifting under a condition the truck 24 is horizontally held. The pinion 30, if continuously rotated, is moved passing gear segments 22a, 22b of the transfer part of the rack track 20 from its vertical running path to horizontal running path, then placed on the rack track 20 of the horizontal running path, here moved horizontally running, finally stopped in an article unloading position B. Here a lifter 50 is lowered, while a tray receiver 18 is actuated, and a lifting member 74 rises, then a finger 68 of the lifter 50 is opened to deliver a tray 16.

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to an article conveying device, and more specifically, the present invention relates to an article conveying device, and more specifically, an article conveying device that lifts an article from a certain point, conveys it horizontally, and loads and unloads the article at another point. The present invention relates to an article conveying device that is particularly suitably used.

Various types of article conveying devices such as stacking machines, unloading machines, and transfer machines can be used in a wide variety of ways, depending on the external shape, material, quantity, and other packaging conditions of the conveyed articles. It is used for different purposes. For example, when transporting sheet-like items such as plywood, gypsum board, steel plates, glass plates, etc. from the final product production line to the handling area, the lifting of the items →
Following the general flow of horizontal transport and loading/unloading, self-propelled table lifters and forklifts suitable for this work have conventionally been used. However, in a factory site where a large quantity of final products are transferred one after another from a production line, it is clear that using the table lifter or the like to process the finished products results in large work losses and is inefficient.

In this type of production site, where the final end position of the production conveyor line and the stopping position of the trolley in the handling area for carrying out goods are always established, it is necessary to The goods are connected by a horizontal track supported in the air by a truck, and a trolley is provided that runs horizontally on this track, and a lid that can be freely raised and lowered is provided at the bottom of the trolley, and the goods can be stacked in one trolley using the lid. An article conveying device configured to load and unload articles by horizontal travel and lowering of a lifter has been developed. However, in this type of article conveyance device, the lifter is raised and lowered relative to the cart by a pinion drive of a guide rod with a rack installed perpendicularly to the cart, so the effective total height of the device is maximized relative to the cart. The height of the guide rod is determined by the height of the guide rod, which generally has the disadvantage of increasing its effective height. In particular, when it is necessary to lower the lifter after horizontally conveying the articles and stack a large number of articles one after another on the article transport trolley, the height of the horizontal track itself that supports the horizontally traveling trolley in the air is particularly important. Since the height of the guide rod becomes considerably large, the disadvantage caused by the guide rod protruding further from the truck becomes even more significant.

Therefore, in view of the above-mentioned shortcomings of the conventional art for transporting goods, the inventor has made repeated speculations and studies in order to overcome these problems, and as a result, the inventor has developed a system for lifting goods by using a trolley that only runs horizontally. By lowering each truck by a predetermined distance t at the position, the height of the guide rod with a rack for lifting the lifter installed on the truck can be reduced by that amount.
Therefore, we have come up with the idea that the effective height of the entire device can be reduced.

As a means for raising and lowering the cart itself, a rack surface is formed on the track supporting the cart, and this rack track is formed into a piece shape consisting of a vertical running part and a horizontal running part, and this rack track is divided into two parts. If the rows are arranged in series, and a pinion that meshes with the rack formed on the track is provided on the bogie as a drive wheel, and the pinion is rotationally driven by a drive device mounted on the bogie, the bogie can be It has been found that the vertical running part of the rack track can be raised and lowered while being horizontally supported by the engagement of pinions.

Therefore, in the present invention, two rack tracks in which a vertical running path and a horizontal running path are connected in a piece-like manner are arranged adjacent to each other in series, and two pinions that are engaged with each of the two rack tracks are used as driving wheels. Provided is an article conveyance device, comprising: a self-propelled cart; and a guide means for ensuring engagement of the two pinions with the two rack tracks at least in the vertical running path of the two rack tracks. It is something to do.

In this case, the two rack tracks are each paired as a left and right pair,
It is preferable to set the width of one pair of rack tracks to be different from the width of the other pair of rack tracks.

Further, the portion of the rack track where the vertical running path transitions to the horizontal running path is continuously formed by a rack surface that draws a quadrant arc.

Further, the guide means for ensuring engagement between the pinion and the rack track is composed of a guide wheel arranged coaxially with the pinion and a guide rail arranged parallel to the vertical running path portion of the rack track so as to come into contact with the guide wheel. It is preferable to do so.

Furthermore, in this application, the main components are common to the above invention,
In addition, as another invention that achieves the same object, two rack tracks in which a first vertical running path, a horizontal running path, and a second vertical running path are connected in a gate shape are arranged adjacently in series, and A self-propelled truck having two pinions as drive wheels each meshing with two rack tracks, and ensuring engagement between the two pinions and the two rack tracks at least in a vertical running path of the two rack tracks. Provided is an article transport/dispatch characterized in that it is provided with a guide means for guiding the article.

In the present invention, the two rack tracks are arranged as a left and right pair, and the track widths are set to be equal for each pair of rack tracks.

Further, in the present invention, the portion of the rack track where the vertical running path transitions from the horizontal running path and the portion where the horizontal running path transitions from the horizontal running path to the vertical running path are continuously formed by a rack surface that draws a quadrant arc. It will be done.

Further, in the present invention, the guide means for ensuring meshing between the pinion and the rack track includes a guide wheel disposed coaxially with the pinion, and a guide disposed parallel to the vertical running path portion of the rack track so as to abut the guide wheel. It is preferable that the rail be comprised of a rail.

Further objects and configurations of the present invention will become more apparent from the detailed description below.

By the way, in the above-mentioned apparatus according to the present invention, in order to lift the article at the end position of the final production line, the self-propelled cart descends at the end position of the final production line. Since the self-propelled cart itself cannot be raised or lowered at the unloading position, it is often necessary to provide a type of elevator as a separate goods receiving device (especially when goods need to be stacked to a considerable height). .

Therefore, the inventor took the idea of the present invention one step further,
If the self-propelled trolley itself is configured to be able to freely move up and down a predetermined distance at the article lifting position and loading/unloading position, not only will there be no need to separately install the article receiving device described above, but the bottom of the self-propelled trolley There is no need to provide a lifter on the self-propelled vehicle, and there is also no need for a guide rod with a rack that protrudes above the self-propelled vehicle to raise and lower the lid, and the effective height of the entire device can be minimized to the height of the self-propelled vehicle. It turns out that it can be suppressed.

Next, the article conveyance device according to the present invention will be described in detail below with reference to the accompanying drawings, giving examples with different speeds. Note that the illustrated embodiment is merely illustrated as a preferred example for convenience of explanation, and it goes without saying that the apparatus according to the present invention is not limited to this embodiment.

1 to 3 show an article conveying device according to the invention first devised by the inventor, and reference numeral 10 in the figures indicates an iron pillar. These pedestals 10 are arranged vertically in pairs facing each other at predetermined intervals on a solid site in the factory, and a pair of steel girder members 12 are placed at the tops of these pedestals in the direction in which the pedestals are aligned. are bridged in parallel. As shown in FIG. 1, in this embodiment, eight pillars 10 are arranged vertically in a row in the longitudinal direction, and two pillars 10a and 10b are arranged on the left side.
The part sandwiched between them is the lifting position for the sheet-like article, and the part sandwiched by the two right-hand pillars tob and toe is the article loading and unloading position. Therefore, in FIG. 1, a belt conveyor 17 in the final production line for conveying trays 16 holding sheet-like articles 14 is placed below the article lifting position A, and a tray is placed at the article stacking position B. It is assumed that two receiving devices 18 (details will be described later) are provided.

In FIG. 1, two pillars tOa and 10b arranged at the article lifting position A have a track 20B with rack teeth cut into them.
and 20b are arranged and fixed in a corresponding manner to form a vertical running path for the truck, which will be described later.

Moreover, on the parallel girder member 12 bridged on the pedestal, there is a second
As shown in the plan view of the figure, a pair of tracks 20& and 20b, which are also provided with rack teeth, are arranged and fixed in parallel to form a horizontal running path for a bogie, which will be described later. Furthermore, as shown in FIG. 1, gears are provided at the same gear pitch as the rack teeth in the transition portion from the rack tracks 20a, 20b forming the vertical running path to the rack tracks 20a, 201) forming the horizontal running path. Gear segments 22&, 22b, which are obtained by dividing the cut spur gear into T, are provided respectively. That is,
It will be understood that the portion of the rack track that transitions from the vertical running path to the horizontal running path is continuously formed by a rack surface that draws an arc of a quarter circle. As will be explained in detail later, since the self-propelled cart 24 freely travels on the horizontal running path of the rack track 20, the width of one pair of rack tracks (20゛a in this embodiment) is smaller than the width of the other pair. The width is set to be larger than the width of the pair of rack tracks (in this embodiment, 20b). After all, in the device according to the invention, the pair of rack tracks formed in the shape of a hook from the vertical running track and the horizontal running track are two.
The rack tracks 20&, 20b, which are arranged adjacent to each other in series and form horizontal running paths, are partially parallel to each other and adjacent to each other.

Next, the structure of the self-propelled cart 24 that travels in mesh with the rack track 20 will be explained. The self-propelled trolley 24 is
As shown in FIG. 2, it is composed of a rectangular frame 26, and pinions 3 are disposed outside each corner of the frame 26 and mesh with the rack teeth of each rack track 20 via brackets 28.
0 is rotatably arranged as a running wheel. That is, the pinion 80 is fixed to both ends of a common shaft 3210 that is rotatably inserted into a bearing (not shown) provided in the bracket 28 and is supported, and the outer peripheral gear portion of the pinion 80 is fixed as shown in FIG. Since the pinion 30 is configured to slightly protrude from both sides of the bogie frame 26, the pinion 30 meshes with the rack track 20 in the vertical running portion of the truck track 20, and moves the self-propelled bogie 24 onto the rack track. 20 is supported so that it can run freely. Note that the upper part of the self-propelled truck 24 is a pedestal on which a motor 34 for driving the truck and a reducer 36 connected to the motor 34 and a force solenoid printer are mounted, and the sprocket 40 fixed to the output shaft 3B of this reducer 86 and the sprocket 40 fixed to the output shaft 3B of this reducer 86 are The pinion 30 is rotationally driven by the sprocket throat 42 disposed on one common shaft 32 and the ζ roller chain 44 being wound around it. Power transmission is performed in the same manner on the other common shaft 32. In this case, it is preferable to interpose a sprocket 46 for adjusting the tension of the roller chain 44 so that its position can be adjusted freely. With this configuration, when the motor 84 is electrically energized, the pinion 30 is chain-driven and rotates while meshing with the rack track 20, and the self-propelled cart 24 is rotated according to the rotation direction of the pinion 80. The article will be raised and lowered at the article lifting position A. In addition, in FIG. 1, the member indicated by the reference numeral 48 disposed on the pillar tOa is a guide rail,
By configuring the guide wheel 49 coaxially arranged with the pinion 80 to slide in contact with the guide rail 48,
This prevents the pinion 30 from falling off the rack track 20.

Furthermore, in the device according to the present invention, a lifter 50 is disposed at the lower part of the self-propelled trolley 24, so this will be explained. That is, in the device of the present invention, as will be described later, the self-propelled cart 24 travels on the horizontal traveling path of the rack track 20 and arrives at the article loading/unloading position B, but since the self-propelled cart 24 cannot descend at this position, This lifter 50 and tray receiving device 18 (described later) are required. This lifter 50 is composed of a rectangular frame, and is attached horizontally to the lower end of a racked rod 54 (see FIG. 1) that is vertically inserted into a rack and pinion gear box 52 disposed on the frame of the self-propelled truck 24. Fixed. The racked rod 54 meshes with a pinion (not shown) disposed in the gear box 52, and is moved freely up and down relative to the self-propelled cart 24 by driving the pinion. Also, on the frame of the self-propelled trolley 24, there is a motor 56 for driving the lifter up and down, and this motor 5
By installing a worm reducer 58 connected to the V-belt and connecting the output shaft of this reducer 58 to the input shaft of the gear box 52 via a chain coupling 60, the lifting power of the rack rod 54 is reduced. is supplied to the gear box 52. Therefore, when the motor 56 is electrically energized, the rod 54 is driven by a rack and pinion in the gear box 52, moves up and down, and is fixed to the lower end of the rod 54. The lid 50 also moves up and down with respect to the truck 24. Note that a rack-equipped rod 5 is mounted above the truck 24.
4 will protrude vertically, so this portion is housed and protected by a protective case 62 as shown in FIG. Further, the upright bar member designated by reference numeral 64 in the figure is a protective case that houses a guide bar 66 (shown in broken lines in FIG. 1) for preventing vibration of the lifter 50. Furthermore, a finger 68 for gripping the tray 16 is attached to the lower part of the lifter 50 so as to be openable and closable, but the opening and closing mechanism for the finger 68 is provided on a cart according to a second embodiment of the invention to be described later. Since the mechanism is exactly the same as that of

Next, the outline of the tray receiving device 718 provided as an auxiliary device for the device according to the present invention will be explained. This tray device 18 is provided due to the necessity of the self-propelled cart 24 not being able to descend from the horizontal rank track 20 at the goods loading section position B and the fact that the lifting stroke of the lifter 50 is relatively small, as described above. shall be provided,
The lifter 50 rises to receive the tray 16 transported by the lifter 50 at the article loading/unloading position B, and transfers the received tray 16 to the transport trolley 70 at the position B. That is, this tray receiving device 18 includes a gate-shaped pedestal 72 (FIG. 3) disposed vertically at position B facing each other in the running direction of the self-propelled cart 24, and this pedestal 72.72.
Elevating and lowering members 74.
74, and a tray receiving finger 76 which is disposed on the elevating member 74 and moves back and forth in the horizontal direction. First, the gate-shaped pedestal 72 is made of drawn steel with a U-shaped cross section, and its U-shaped groove is used as a vertical guide groove 78 (Fig. 8). Four guide rollers 8 rotatably pivoted to a bracket 80
2 facing the guide groove 78, the elevating member 74
It is configured to move up and down freely along 2. Furthermore, as can be understood from FIG. 1, a pedestal 84 is horizontally attached to the pedestal 72, and a motor 86 and a worm reducer 88 connected by a belt to the motor are mounted on the pedestal. As shown in FIG. 2, the output shaft of the speed reducer 88 is rotatably connected to a common shaft 90 shown in the figure via a sprocket and a roller chain (numbers not shown), and this common shaft 90 has bevel gears at both ends thereof. Connected to HOX92.92.

In this gear box 92, the output direction of the common shaft 90 is converted by 90 degrees, and as shown in FIG. 2, a sprocket 96. The output is transmitted via the roller chain 98 and the roller chain 100. As shown in FIG. 2, this common shaft 94 is provided with sprockets 102 at both ends, and between these sprockets 102 and a sprocket 104 rotatably disposed at the bottom of the pillar 72 in FIG. ,
A roller chain 106 is wound around it. The roller chain 106 is connected at both ends to chain tension fittings 108 fixed to the bracket 80. Therefore, when the common shaft 94 rotates, the roller chain 106 wound around the sprocket 102 continuously runs along the pillar 72, and the bracket 80 and the elevating member 74 connected to the chain 106 vertically move up and down. It would be understandable to do so.

A horizontal projecting seat plate 110 is fixed to the elevating member 74 as shown in FIG. A finger support bar 116 is fixed to the tip of the linear shaft 112. Further, an air cylinder 118 is disposed on the seat plate 110, and the end of the piston rod 120 is attached to the finger support bar 118.
It is fixed at 6. Therefore, if the air cylinder 118 is energized, the bar 116 and the tray gripping fingers 76 fixed to the bar move forward, and conversely, if the air cylinder 118 is deenergized, the bar 116 and the fingers 76 move backward. Become.

Next, the structure of the article conveying device according to the second invention of the present application will be described in detail below with reference to FIGS. 4 to 6.

In the apparatus according to the second aspect of the invention, the rack tracks formed in a gate shape are arranged in series and adjacent to each other, so that the cart itself is moved up and down at the article lifting position A and the article loading/unloading position B.

Note that this second invented device has the same main components as the first invented device described above, so to simplify the explanation, the description will be made with respect to the first invented device. Components that are the same as or equivalent to those described above shall be uniformly indicated by the same reference numerals. In Figure 4, for example, pillars t are placed vertically at predetermined intervals on a flat site in a factory.
A pair of steel girders 12 are installed at the tops of the pillars Oa to 10d, between the pillars toa and 10b, and to the pillars 10C91.
0d are bridged respectively. In addition, these pillars 10B
Rack tracks 20a to 20 (l are respectively arranged and fixed as shown in FIG.
4 vertical running paths are formed. Moreover, on the parallel girder material 12,
As shown in FIG. 5, rack tracks 20e and 2Of are similarly arranged and fixed to form a horizontal running path for the truck 24. Further, gear segments 22aB to 22d, which are obtained by dividing the spur gear into parts, are arranged and fixed at the portion where the vertical traveling path transitions to the horizontal traveling path, as in the first invention device.

After all, in this second invention device, at least two pairs of one-rack tracks formed in a gate shape from the first vertical running path, the horizontal running path, and the second vertical running path are arranged adjacently in series. There will be. Also, in the present invention, the self-propelled cart 24 travels in pin-on engagement with the gate-shaped rack track 20, but the basic structure of the self-propelled cart 240 has been explained in relation to the first invention device. It's almost the same place.

The bogie 24 is equipped with a pinion 30 as a running wheel that meshes with the rack track 20, and this pinion 30 is connected to the bogie running motor 84 mounted on the bogie and the motor 3
Sprocket 4 is attached to the reducer 36 which is connected to belt 4.
0. Power is transmitted via a chain 44 and a sprocket 42 fixed to a common shaft 82. By the way, what should be noted in this second device of the invention is that, as clearly illustrated in FIG. Instead of all meshing with one portal rack track,
For example, when one pinion (the left pinion in FIG. 4) 30 is engaged with the rack track 20b fixed to the pedestal 10b, the other pinion (the right pinion in FIG. 4) 30 is engaged with the rack track 20b fixed to the pedestal 10b. Rack track 2 fixed at 10d
0d ('This does not form a continuous running path with the rack track 20b).

In FIG. 4, reference numeral 48 indicates the pinion 30 when the truck 24 moves up and down the vertical traveling portion of the rack track 20.
A guide wheel 49 coaxially fixed to the pinion 30 abuts on this guide rail 48 and is guided. With this configuration, if the motor 30 is energized and the output shaft of the reducer 36 is rotated counterclockwise, assuming that the self-propelled trolley 24 is now at the solid line position shown in FIG. is rack orbit 20
The carriage 24 rotates while engaging with the vertical rack track 20.
b, raised horizontally along 20d, gear segment 2
After passing through a transition section consisting of 21+ and 22d, the track reaches rack tracks 20e and 2Of, which form a horizontal running path. Then the trolley 24
After traveling through this horizontal portion, the gear segment 22
a, 22e (-1), descends horizontally along the rack track 2oae 20C forming a vertical running path, and stops at the position shown by the broken line in FIG.

Next, since this self-propelled cart 24 is provided with fingers for gripping the tray, this mechanism will be explained (note that this mechanism is the finger mechanism provided in the lid 50 of the first invention device of the present application). , but a detailed explanation of its mechanism will be summarized here for convenience). Bearing units 122 are disposed facing each other at appropriate positions on the bottom surface of the self-propelled cart 24 as shown in FIG. Fix the finger 68. Note that a finger mechanism having exactly the same structure is separately provided as shown in FIG. Furthermore, as shown in FIG.
26, and a link plate 128 is rotatably supported on this pivot 126 at its center. One end of a link rod 130 for driving the fingers is pivotally attached to both ends of the link plate 128, and the other end of the link rod 130 is connected to the finger shaft 124 via a so-called knuckle joint 132. Connecting. An air cylinder 184 whose end is connected to the frame of the self-propelled truck 4 with a clevis is provided, and the piston rod 136 thereof is provided.
By connecting the end of the link plate 128 with a pin to one end of the link plate 128, a link control system is formed in which the air cylinder 184 is the driving source and the finger shaft 124 is the driven part. That is, when the air cylinder 184 is pressurized, the link plate 128 is biased around the pivot shaft 138, and the two link rods tao and tao, which are pivotally attached to the link plate 128, are respectively pressed, resulting in In order to rotate the finger shaft 124 connected to this link rod 130 at the knuckle joint, the finger 6
8 will be closed. Furthermore, if the air cylinder 134 is deenergized, the link control system operates in reverse and the finger 6
8 opens.

Next, the basic functions and effects of the first invention device and the second invention device according to the present application will be explained.

First, in the article conveying device (FIGS. 1 to 8) according to the first invention of the present application, assuming that the self-propelled cart 24 is at the solid line position with the article lifted at the article lifting position A as shown in FIG.
When the output shaft of the reducer 86 is rotated in the counterclockwise direction, the pinion 3o rotates while meshing with the rack track 20, and starts to rise vertically while holding the self-propelled cart 24 horizontally. do. In this case, prior to this, the lifter elevating motor 56 is energized to lower the lifter 50, the fingers 68 are closed under link control by the energization of the air cylinder, and the tray 16 carrying the sheet-like article 14 (this (continuously conveyed to position A by the conveyor 17 in the final product production line), and then it is necessary to raise the lifter 50 to its upper limit. Further, since the guide wheel 49 disposed coaxially with the pinion 3b is guided by sliding in contact with the guide rail 48, the pinion 3G does not fall off from the rack on the vertical running path of the rack track 20. There is no fear. When the rotation of the pinion 30 continues, the pinion 30 passes through the gear segments 22a and 22b, which are the transition portions of the rack track 20 from the vertical running path to the horizontal running path, and then rides on the rack track 20, which forms the horizontal running path. , travels horizontally here and stops at article loading/unloading position B. Here, as the lifter 50 descends, the tray receiving device 18 is actuated to raise the elevating member 74 to meet the lifter 50, and the fingers 68 of the lifter 50 open to release the tray 16.
is grasped and received by fingers provided on the elevating member 74. When the delivery of the tray 16 is completed, the lid 50 rises again to the upper limit, and the trolley 24 returns to the article lifting position A.

Further, the elevating member 74 that has received the tray 16 starts to descend, and after transferring the tray 16 to the article carrying cart 70, the finger 76 is released and the elevating member 74 enters the next operation standby state again.

As described above, according to the present invention, since the self-propelled cart itself is configured to descend at the article lifting position, the stroke of the rod with rack for raising and lowering the lifter can be made relatively small, and therefore Since the height of the racked rod protruding from the top can also be suppressed, the effective height of the entire device can be reduced.

Next, in the article conveying device (FIGS. 4 to 6) according to the second invention of the present application, the tray 16 conveyed by the conveyor at the article lifting position A is moved by the finger mechanism described earlier. After being gripped by the fingers 68, the self-propelled cart 24 is raised along the rack track 2o. This trolley 2
The traveling operating state of No. 4 has already been explained in detail in connection with the description of the structure, so it will not be repeated here. After the fingers 68 are opened at the article loading/unloading position A and the tray 16 is transferred onto the conveyor 140, the self-propelled cart 24 returns to the position A again. As described above, according to the device according to the second invention of the present application, the self-propelled trolley descends vertically at the article lifting position A to grip the article, and after vertically ascending and horizontally traveling on the rack track, lifts the article. Even at the loading/unloading position B, the self-propelled cart itself is configured to descend and release the articles onto an unloading conveyor, etc., so compared to the first invention device of the present application, a lifter is not required, and therefore, the overall load of the device is reduced. The effective height can be further reduced. Further, since a tray receiving device is not required at the article loading section, manufacturing costs can be further reduced. In addition, the devices according to the first and second inventions of the present application have less time loss, easier electrical control, faster operation response time, and can be manufactured at lower cost as a whole than conventional devices. It has many advantages such as easy maintenance and inspection.

Although the present invention has been described in detail using preferred embodiments, the present invention is not limited to these illustrated embodiments, and many improvements and changes can be made within the spirit of the invention. It is something. For example, in the second invention of the present application, it is possible to arrange two or more gate-shaped rack tracks adjacent to each other in series as necessary, and the self-propelled cart can be sequentially moved along the rack tracks, and this is also the invention of the present application. It should be understood that it is included in the scope of.

[Brief explanation of the drawing]

1 to 3 show an embodiment of an article conveying device according to the first invention of the present application, in which FIG. 1 is a front view of the device of the present invention, FIG. 2 is a plan view thereof, FIG. 8 is a right side view of the apparatus shown in FIG. 1. 4 to 6 show an embodiment of the article conveying device according to the second invention of the present application, in which FIG. 4 is a front view of the device of the present invention, FIG. 5 is a plan view thereof, FIG. 6 is a right side view of the device shown in FIG. 4. 20 Nirakku orbit 24: Self-propelled trolley 80: Binion
48: Guide means 49 Guide wheel 5 (Guide rail) 0: Lifter - 68 = Finger Applicant Takasago Kogyo Co., Ltd. Agent Patent attorney Hiroshi Noguchi

Claims (1)

[Claims] l Two rack tracks in which a vertical running path and a horizontal running path are connected in a hook shape are arranged adjacently in series, and two pinions meshing with each of the two rack tracks are connected to a drive wheel. A self-propelled trolley,
An article conveying device 2 characterized in that it is provided with a guide means for ensuring engagement between the two pinions and the two rack tracks at least in the vertical running path of the two rack tracks. The article conveying device 3 according to claim 1, wherein the article conveying device 3 is configured to have a pair of left and right rack tracks, and the width of one pair of rack tracks is set to be different from the width of the other pair of rack tracks. 4. The article conveying device 4 according to claim 1, wherein the portion transitioning to the horizontal traveling path is continuously formed by a rack surface drawing a quadrant arc. The guide means for ensuring engagement between the pinion and the rack track is , a guide wheel disposed coaxially with the pinion, and a guide rail disposed parallel to the vertical running path portion of the rack track so as to abut the guide wheel. . 5. The self-propelled cart is equipped with a lifter at the bottom of the cart that has a finger that can be freely opened and closed, and the lifter is driven up and down by a drive device mounted on the self-propelled cart. Goods conveying device 6 Two rack tracks in which a first vertical running path, a horizontal running path, and a second vertical running path are connected in a gate shape are arranged adjacently in series, and two rack tracks are engaged with each of the two rack tracks. a self-propelled truck having two pinions as driving wheels;
An article transport/transport device 7 characterized in that it is provided with a guide means for ensuring engagement of the rack tracks of the strips.Each of the rack tracks is a pair of left and right rack tracks, and the track widths of the two rack tracks are set to be equal to each other. The article conveying device 8 according to claim 6, wherein the portion of the rack track that transitions from the first vertical traveling path to the horizontal traveling path and the portion that transitions from the horizontal traveling path to the second vertical traveling path are four. The article conveying device 9 according to claim 6, which is continuously formed by a rack surface that draws a circular arc of a semicircle. and a guide rail arranged parallel to the vertical running path portion of the rack track so as to abut the guide wheel. 10. The article conveying device according to claim 6, wherein the self-propelled cart is provided with a finger that can be opened and closed at the bottom of the cart, and the finger is connected to a drive source via a link mechanism.