JPH07232808A - Flow rack - Google Patents

Abstract

PURPOSE:To provide a flow rack which moves a load carried in an inlet to an outlet horizontzally and intermittently, and also can store it continuously between the inlet and the outlet. CONSTITUTION:The top end sharp part 37 of a load reverse-feed preventing part piece 36 is projected upward from the opening 42 of a support frame 41, the load reverse-feed preventing part piece 36 is always erected by an eccentric weight of a weight lower part 39 of the load reverse-feed preventing part piece 36 and the carrying-in side-part 38 of the load reverse-feed preventing part piece 36 is made in contact with a carrying-in edge 43 at the opening 42 of the support frame 41.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention is capable of intermittently stepping a load carried into a carry-in port in the horizontal direction toward the carry-out port and continuously storing the load from the carry-in port to the carry-out port. It is about a fluidized shelf.

[0002]

2. Description of the Related Art Conventionally, in a fluidized shelf which is widely used in various parts warehouses, distribution warehouses, production factories, etc., loads are successively carried in from a carry-in port and sequentially carried out from a carry-out port in a carrying-in order.

In order to perform such an operation, in a conventional general flow shelf, a large number of rollers or wheels are rotatably supported on a rail that is gently inclined downward from the carry-in entrance to the carry-out exit. , The load placed on the rollers of the slanted rail was able to travel by itself due to its own weight and inclination from the carry-in port to the carry-out port. It is inevitable that there is a dead space that is not directly involved in the storage of the load due to the necessity of providing a head, and that the moving speed varies due to the weight of the load and the degree of unevenness on the bottom of the load.

A fluidized shelf described in Japanese Examined Patent Publication (Kokoku) No. 25004 eliminates such drawbacks. In the fluidized shelf described in the above publication, moving rails shorter than the fixed rails are reciprocally housed inside a pair of left and right long fixed rails parallel to each other, and the fixed rails are provided above the moving rails. A plurality of load-carrying rotary wheels for loading, which project upward, are arranged in a row, and a plurality of rolling wheels that roll on the tread surface of the fixed rail are provided in the lower part.

In this fluidized shelf, the conveyor device is provided with a slight inclination in the front-rear direction so that a load placed on the load-carrying rotary wheel cannot move by itself, and the movable rail is fixed. Reciprocating drive means for reciprocating back and forth with a constant stroke parallel to the rail is provided.

[0006] During the forward travel of the moving rail, the load moves forward with the moving rail by a predetermined distance, and during the backward stroke, the component force due to its gravity acts on the load in the forward direction, so the load remains stopped at the forward position. Only the moving rail moves backward with the rotation of the load transfer rotary wheel. Therefore, in this fluidized shelf, it is necessary to dispose the fixed rail inclining downward toward the carry-out port as described above, which is difficult to apply when the load is to be conveyed horizontally. Further, since the fluidized rack is only slightly inclined, the load may be retracted together with the moving rail depending on the traveling resistance of the load, which makes the transfer of the load unstable.

Japanese Patent Application Laid-Open No. 2-300012 also discloses that
FIG. 15 discloses a conveyer device including a pair of left and right rail devices as described above. In this conveyer device, the conveyer device is fixed to a support base at the widthwise center between the left and right rail devices. A support frame is provided, and the support frame is usually provided with a locking plate that projects upward and maintains an upright state.

When the load passes, the locking plate falls forward to allow the forward movement of the load, but when the load passes, the locking plate again stands up and faces the back surface of the load to move the load rail. During the retreat stroke, it abuts against the back surface of the load that is going to retreat and prevents the retreat of the load. Therefore, this conveyor device does not necessarily have to be arranged with the front side being low and the rear side being high and inclined in the front-back direction.

[0009]

[Problems to be Solved] However, the above-mentioned locking plate allows both forward and backward movement of the load in the fallen state, and prevents the backward movement of the load by abutting against the back surface of the load in the standing state, and In most cases, except when the front-rear dimensions of the load, the spacing between the locking plates, and the stroke of the moving rail are strictly aligned, the back of the load at the end of forward movement and immediately thereafter. Since there is a space between the locking plate and the locking plate standing upright, the load temporarily retracts along with the moving rail during the backward movement of the moving rail, and stops only when it hits the locking plate.

As a result, the load is transported while being rocked back and forth, which may adversely affect the load.
The effective transport distance due to forward movement is shortened, the transport speed becomes slower by that amount, and when the loads come forward and backward in a collective manner, only the locking plate after the last load works. Therefore, a large force acts on this, and there is a risk of damage.

Further, since the locking plate comes into contact with the load at one position in the widthwise central portion of the back surface of the load, a moment is generated in the load depending on the position of the center of gravity of the load, and the direction of the load may change from side to side. There is.

Further, in order to support the locking plate, in addition to the left and right rails, it is necessary to provide a long support frame in the front-rear direction at the central portion, which causes inconvenience such as a complicated structure.

[0013]

SUMMARY OF THE INVENTION The present invention has solved such inconveniences, and has at least a left and a right erected at right and left in parallel with each other in the front-rear and horizontal directions. A pair of long fixed rails, a pair of left and right moving rails supported by the fixed rails so as to be able to reciprocate back and forth, and above the fixed rails at a predetermined interval in the longitudinal direction of the moving rails. A plurality of load transfer rotary wheels that protrude and are rotatably supported on the upper portion of the moving rail are provided, and the pair of left and right moving rails are integrally connected to each other by a connecting rod. A reciprocating drive means for reciprocating back and forth is provided, and at least one side of the fixed rail is rotatably supported in a standing posture by a plurality of load reverse feed preventing pieces by a lower eccentric weight of the load reverse feeding preventing pieces. , The top of the reverse load prevention piece is The load reverse-rotation preventing member is pivotally supported so that it can tilt from the standing posture toward the carry-out port but cannot tilt in the opposite direction from the standing posture, and the height of the top surface of the load transfer rotary wheel is in the standing posture. It is set to be lower than the height of the top end, and is locked to the bottom surface of the load on the load transfer rotary wheel in a state where the top end of the load reverse-feeding prevention piece is inclined toward the carry-out port. It is a thing.

Since the present invention is constructed as described above, when a load is loaded from the carry-in port onto the load-carrying rotary wheel of the moving rail and carried in, and the reciprocating driving means is operated, the moving rail is moved. Is reciprocating with respect to the fixed rail, and when the moving rail moves forward toward the unloading port, the load reverse feeding preventing piece whose top is in contact with the bottom surface of the load is
The load on the moving rail is tilted toward the carry-out port, receives no resistance force, and moves along with the moving rail by the stroke of the reciprocating driving means toward the carry-out port.

When the moving rail is moved back toward the carry-in entrance, the load reverse feeding preventing piece whose top portion is in contact with the bottom surface of the load cannot tilt toward the carry-in entrance. The load on the moving rail receives resistance, and even if the moving rail returns to the carry-in port, the load on the moving rail remains stopped.

As described above, by the operation of the reciprocating driving means, when the moving rail advances to the carry-out port by one stroke, the load on the moving rail advances, and when the move rail moves backward to the carry-in port, Since the load on the moving rail is stopped, the load intermittently steps along the longitudinal direction of the moving rail from the carry-in port to the carry-out port.

Therefore, in the present invention, since the load can be firmly held in the stopped state when the moving rail is retracted, the load can be efficiently and reliably moved with the minimum number of reciprocations of the reciprocating drive means.

Since the fixed rail is installed horizontally,
There is no drop between the carry-in port and the carry-out port, and the number of loads stored is large relative to the volume occupied by the entire fluidized shelves, and storage volume efficiency is high.

Further, according to the present invention, the load reversal preventing members located directly below the load engage with the load above the load to prevent the reverse transfer toward the carry-in port. The reverse feed blocking force applied to the reverse feed prevention member is reduced, and the load reverse feed prevention member is less likely to be damaged.

Furthermore, in the present invention, since the load reverse feeding preventing piece always tries to stand up due to its bottom eccentric weight, the load reverse feeding preventing piece does not need any returning means and is in an inclined state. Can automatically return to the standing state, the structure can be remarkably simplified, and the cost can be greatly reduced.

Further, by constructing the present invention as described in claim 2 or claim 3, it is possible to reciprocate the movable rail on the fixed rail, and to reduce the size of the reciprocating drive means. Can be planned.

By configuring the present invention as described in claim 4, the top of the back-feeding prevention piece can be locked to the bottom surface of the load to reliably transport the load.

Further, by constructing the present invention as set forth in claim 5, the top portion of the reverse feed preventing portion piece can be elastically deformed and locked to the bottom surface of the load with a large frictional force. The cargo can be transported reliably without damaging the bottom surface.

Further, by constructing the present invention as set forth in claim 6, at least one pair of left and right reverse feed preventing part pieces is always locked regardless of the position on the moving rail. It is possible to reduce the load restraining force acting on the back-feed preventing portion and improve the durability of the back-feed preventing portion.

By constructing the present invention as set forth in claim 7, it is possible to prevent the impact force at the time of loading from being directly applied to the back-feed preventing portion and to prevent the back-feed preventing portion. Can be reliably prevented from being damaged.

Further, according to the present invention as set forth in claim 8, the reverse feed prevention pieces on the carry-in side which are likely to receive a large load restraining force at the start of load transfer are densely arranged to prevent the reverse feed. It is possible to disperse the load restraining force applied to the piece and avoid damage to the back-feed prevention piece.

Furthermore, by constructing the present invention as set forth in claim 9, the load conveyed to the carry-out port can be stably supported by the auxiliary rotary wheel irrespective of the reciprocating movement of the moving rail. Therefore, it is possible to smoothly carry out the load.

By configuring the present invention as set forth in claim 10, the load on the transfer rail can be immediately advanced by one stroke at the start of load transfer, and the load transfer time can be shortened. Thus, the shipping efficiency can be improved, and the mutual pressure contact between the load at the carry-out port and the load located on the carry-in side can be eased at the time of carry-out, and the load at the carry-out port can be easily carried out.

According to the present invention as set forth in claim 11, the moving rail is moved slowly from the carry-in port to the carry-out port, and is pivotally attached to the moving rail to support a load. It is possible to transfer the load together with the moving rail to the unloading side while preventing the load transfer rotary wheel from idling, and to move the moving rail rapidly from the carry-out port to the carry-in port, The loaded load-carrying rotating wheel can be made to idle, and the load on the moving rail can be made stationary regardless of the movement of the moving rail, and as a result,
It is possible to reduce the load on the load back-feed prevention part, prevent the load from being back-fed, and reliably carry out the stepping of the load, and shorten the time required for one round trip of the moving rail to reduce the load as soon as possible. The load can be transported to the unloading side.

An embodiment of the present invention shown in FIGS. 1 to 10 will be described below.

In the fluidized shelf 1, a large number of columns 2 are erected in a row in the front-rear direction (horizontal direction in FIG. 1) and in the left-right direction (horizontal direction in FIG. 2). The cross beams 3 are connected to each other by a horizontal beam 3 oriented in the direction, and are reinforced by braces 4 etc., between the adjacent left and right columns 2 and 2 and the upper and lower horizontal beams 3 and 3 (the uppermost horizontal beam 3 is located above it). ) Has shelf booths 5 formed therein. As shown in FIG. 1, the shelf booths 5 extend in the front-rear direction (left-right direction in FIG. 1) from the carry-in port 8 (right side in FIG. 1) to the carry-out port 9 of the fluidized shelf 1.
It extends to (the left side in Fig. 1), and such shelf booth 5
However, as shown in FIG. 2, a large number are arranged vertically and horizontally.

In addition, a pair of left and right rail devices 6 are installed on each shelf booth 5 by connecting the lower transverse beams 3 to the front and back and from the carry-in entrance 8 to the carry-out exit 9, and the stopper 10 is provided at the carry-out exit 9. The load 7 carried into the shelf booth 5 from the carry-in port 8 of the fluidized shelf 1 is stepped toward the carry-out port 9 and stopped by the stopper 10 as described later. Has become.

Further, the rail device 6 is composed of a pair of left and right fixed rails 11 and a pair of left and right moving rails 16. The fixed rails 11 are separated into left and right sides, and the center line of their arrangement is used as a symmetry axis. As shown in FIG. 5, the fixed rail part pieces 12 and 13 are formed symmetrically to the left and right, and the upper parts of the fixed rail part pieces 12 and 13 are formed in a lateral channel shape. It is bent downward at a right angle, and its lower end is bent outward at a right angle, so that the supporting portions 12a, 13
a is formed, and the fixed rail portion pieces 12, 13 have a certain width on the left and right by the bolts 14 that are screwed into the lateral beam 3 through the support portions 12a, 13a and are parallel to each other. It is fixed to the lateral beam 3 in an integrated manner by directing the direction.

Furthermore, the movable rail 16 is bent at a right angle so that the upward channel-like side portions 16a and 16b are directed outward.
The end portion 16c of the outer side portion 16b is bent obliquely outward and the center portion 16d of the moving rail 16 is provided with a number of holes 17 extending in the longitudinal direction of the moving rail 16 and the end portion 16c is In addition to serving as a guide plate, dust and the like dropped from the upper side to the fixed rail 11 and the movable rail 16 are discharged downward through the holes 17 and the openings 15.

As shown in FIG. 8, the moving rail 16 is set to be shorter than the fixed rail 11 by the stroke L of the air cylinder 33, which will be described later. At the bottom of both sides 16a, 16b of
Axes that are oriented in the lateral direction with a certain spacing along their length
18 is pierced through, and rolling wheels 20 are provided at both ends of the shaft 18 via bearings 19.
Is rotatably provided, and the rolling wheels 20 are fixed rails 11
By rolling on the treads 12b and 13b of the fixed rail pieces 12 and 13, the moving rail 16 can reciprocately and lightly move in the fixed rail 11 along its longitudinal direction.

As shown in FIG. 5, shafts 21 oriented in the lateral direction at regular intervals along the longitudinal direction of the moving rail 16 penetrate through the upper portions of both sides 16a, 16b of the moving rail 16. A sleeve 22 is fitted around the shaft 21 and
The load-carrying rotary wheel 24, which is located every other position via the ball bearing 23, projects upward from both side portions 16a, 16b of the moving rail 16 and is rotatably fitted in a zigzag manner in plan view. There is.

Further, as shown in FIG. 6, the upper portions of the pair of left and right mounting plates 26 are integrally attached to the left and right moving rails 16 substantially in the central portion in the longitudinal direction by the bolt nuts 25, and the pair of mounting plates 26 are attached. The lower part of the plate 26 is the opening of the fixed rail 11.
A gusset plate 27 is integrally fixed to the lower part of the pair of mounting plates 26 by bolts and nuts 28, and a connecting rod 29 is directed to the lower part of the gusset plate 27 in the width direction of the flow shelf 1.
The mounting plate 30 is attached integrally by bolts and nuts 31.

Further, as shown in FIG. 4, the horizontal beam 3 and the horizontal beam 3 positioned on the carry-out port 9 side are positioned at the center of the left and right rail devices 6 in the left-right width direction.
The cylinder support member 32 is installed in parallel with the rail device 6,
A double-acting air cylinder 33, which is a reciprocating driving means, is installed on the cylinder support member 32 in parallel with the rail device 6, and a tip of a piston rod 34 of the air cylinder 33 is connected to a connecting rod 29 via a connecting member 35. When the piston rod 34 expands or contracts by its stroke L (set to 1/4 of the dimension of the load 7 in the front-rear direction or slightly larger than this), the connecting rod 29, that is, the moving rail 16 correspondingly moves. You can go back and forth.

When the movable rail 16 reciprocates between the carry-in port 8 and the carry-out port 9, the load 7 on the rolling wheels 20 of the movable rail 16 is advanced together with the movable rail 16 when the movable rail 16 is advanced. Further, the reverse load preventing piece 36 for stopping the load 7 when the moving rail 16 is retracted is closely arranged near the carry-in port 8 via the pivot 40, as shown in FIGS. 3, 5 and 9. The support frame 41 is pivotally mounted at predetermined intervals so as to be sparse in the vicinity of the carry-out port 9, and the support frame 41 is carried out from a position located near the carry-out port 8 near the carry-out port 8 by the front-rear dimension of the load 7. 9 are integrally mounted on the inner side surface of the inner fixed rail portion piece 12 of the fixed rail 11.

Further, as shown in FIG. 9, the sharp tip 37 of the load reverse feed preventing piece 36 projects upward from the opening 42 of the support frame 41, and the lower part of the weight 39 of the load reverse feed preventing piece 36 is covered. Due to the eccentric weight, the load back-feed prevention part 36 always stands up, and the load back-feed prevention part 36
The carry-in side edge portion 38 of the carry-in side edge portion 43 in the opening 42 of the support frame 41 is
And the tip sharpened portion 37 of the reverse load preventing piece 36 can tilt from the vertical state toward the carry-out port 9 (counterclockwise direction).
The vertical direction cannot tilt to the carry-in port 8 (clockwise), and the height of the top surface of the load transfer rotary wheel is set to be lower than the height of the top end of the load reverse-feeding prevention piece in the upright posture. The load reverse-feeding prevention piece is locked on the bottom surface of the load on the load transfer rotary wheel in a state where the top end of the piece is inclined toward the carry-out port. Even if the sharp tip 37 of the reverse load preventing portion 36 contacts the bottom surface of the load 7 in a state of being nearly vertical, the reverse load preventing portion 36 is reliably prevented from tilting toward the carry-in port 8 direction. It is supposed to be done.

However, the air pressure control circuit of the air cylinder 33
44 is configured as shown in FIG. That is, in the air pressure control circuit 44, one end of a supply pipe 46 is connected to an air pressure source 45 composed of an air pump or an air pump and an air tank, a filter 47 and a pressure reducing valve 48 are interposed in the supply pipe 46, and the supply pipe The other end of 46 is connected to the port 51 of the 5-port 2-position electromagnetic switching valve 49, and the port 54 of the 5-port 2-position electromagnetic switching valve 49 is connected via the air supply / exhaust pipe 55 to the unloading side cylinder chamber 57 of the air cylinder 33. And connected to 5 ports 2
The port 53 of the position electromagnetic switching valve 49 is connected to the loading-side cylinder chamber 58 of the air cylinder 33 via a supply / exhaust pipe 56, and the supply / exhaust pipes 55, 56 are provided with check valve-equipped flow rate adjusting valves 59, 60, respectively. It is equipped.

A start button 64, a start button 64, a control computer 61 for controlling the operations of the 5-port 2-position electromagnetic switching valve 49, the carry-in ready indicator light 62 and the carry-out possible indicator light 63 provided at the carry-in port 8 and the carry-out port 9 are provided. Carry-in side load detector 65, Carry-out side load detector 66
And a call button 67 is attached.

In the control computer 61, when the start button 64 is turned on, the load 7 is carried into the carry-in port 8 during the carry-in work, and the carry-in side load detector 65 is installed.
Is operated, a 5-port 2-position electromagnetic switching valve 49 operates intermittently four times by a control signal from the control computer 61 after a predetermined time of 3 seconds elapses, and the load 7 in the shelf booth 5 is simultaneously loaded. The transfer rail 16 is conveyed toward the carry-out port 9 by the dimension of the carrying direction 7, and after one cycle, the moving rail 16 is stopped near the carry-in port 8.

Further, when the load 7 is unloaded from the unloading port 9 and the unloading-side load detector 66 detects that the load 7 does not exist in the unloading port 9, the above-mentioned control is performed after a predetermined time has passed, as described above. The control signal from the computer 61 causes the 5-port 2-position electromagnetic switching valve 49 to intermittently operate four times, and the load 7 in the shelf booth 5 is simultaneously conveyed toward the carry-out port 9 by the dimension of the load 7 in the transfer direction. It has become so.

When the call button 67 is pressed again, the load 7
The 5-port 2-position electromagnetic switching valve 49 is operated intermittently by the control signal from the control computer 61 until the unloading side load detector 66 detects that the unloading side 9 has reached the unloading side load detector. The 5-port 2-position electromagnetic switching valve 49 is automatically stopped by the detection signal of 66.

Since the embodiment shown in FIGS. 1 to 10 is constructed as described above, when the start button 64 is turned on, the carry-in side load detector 65 determines whether the load 7 exists at the carry-in port 8. If the load 7 is present in the carry-in port 8 and the control computer 61 sends an ON signal to the 5-port 2-position solenoid directional control valve 49, the 5-port 2-position solenoid directional control valve 49 is turned ON to turn on 5 in FIG. The port 2 position electromagnetic switching valve 49 is switched upward, the ports 51 and 54 are connected, and pressurized air is supplied to the carry-out side cylinder chamber 57.

Since the throttle flow path of the check valve-equipped flow rate adjusting valve 60 is throttled, the air is supplied from the carry-in side cylinder chamber 58 to the atmosphere via the supply / exhaust pipe 56, the check valve-equipped flow rate adjusting valve 60, and the ports 53 and 50. Since the flow rate of the air released inside is limited, the piston rod 34 slowly extends toward the outlet 9, and a small acceleration acts on the moving rail 16, so that the rotation for transferring the load pivotally attached to the moving rail 16 is performed. The wheel 24 does not idle and stops as it is, and the load 7 is conveyed to the carry-out port 9 together with the moving rail 16 by one stroke of the air cylinder 33.

The time required for the air cylinder 33 to expand / contract by one stroke toward the carry-out port 9 is set to a minute time (air pressure, a time that allows variation in the throttle opening of the flow control valve 60 with a check valve). When the control computer 61 determines that the added time has elapsed, the 5-port 2-position solenoid directional control valve 49 is turned off, and the 5-port 2-position solenoid directional control valve 49 is switched to the state shown in FIG. Since the flow restricting valve 59 with a check valve has a small restriction in the restricting flow path, the air in the unloading side cylinder chamber 57 is supplied with the supply / exhaust pipe 55 and the flow adjusting valve 5 with a check valve.
It is rapidly discharged into the atmosphere through 9, ports 54 and 52, and the piston rod 34 is suddenly shortened toward the carry-in port 8,
Since a large acceleration acts on 16 and the reverse load preventing piece 36 acts, even if the moving rail 16 moves toward the carry-in port 8, the load 7 is stopped at that position and the piston rod 34 is shortened to the maximum. Then, when the carry-in end of the moving rail 16 reaches the carry-in port 8, the control computer 61 again causes the 5-port 2-position electromagnetic switching valve to move.
49 is turned on.

When this operation is repeated four times and one cycle is completed, the stroke L of the air cylinder 33 is set to about 1/4 of the dimension of the load 7 in the conveying direction. Can step toward the carry-out port 9 by the dimension of the load 7 in the carrying direction. Note that the number of repetitions of one cycle may be increased to 5 times or more as necessary.

As described above, if the load 7 is present in the carry-in port 8, the air cylinder 33 is operated by the control of the control computer 61, and the load 7 in the shelf booth 5 is stepped and conveyed by the dimension in the transfer direction. In order to do this, use a forklift, etc. to carry in
The load 7 can be loaded into the rack booth 5, and the load 7 can be sequentially loaded into the shelf booth 5.

Further, the carry-out indicator light 63 is not lit while the air cylinder 33 is operating, but if the operation of the air cylinder 33 is stopped, the carry-out indicator lamp 63 is lit and the load 7 is discharged from the carry-out port 9. It can be carried out.

Further, when the call button 67 is pressed in a state where the load 7 does not exist at the carry-out port 9, the air cylinder 33 operates again under the control of the control computer 61, and the load 7 is carried to the carry-out port 9, and at this time, the carry-out is carried out. By the detection signal of the side load detector 66,
The air cylinder 33 is stopped.

Moreover, in the state where the moving rail 16 is gently moving toward the carry-out port 9 which is the direction X of the carry-out end, the apex of the top end 37 of the reverse load preventing piece 36 is indicated by the broken line in FIG. Slightly fell from the posture toward the carry-out exit 9, and the pallet of the load 7
The bottom surface of 68 is not stopped by the tip sharpened portion 37 of the reverse load preventing piece 36, and the load 7 can move integrally with the moving rail 16 toward the carry-out port 9.

Further, when the moving rail 16 is moving rapidly toward the carry-in port 8 which is the carrying-in end direction Y, the top end sharpened portion 37 of the load reverse feed preventing piece 36 is in the state shown by the broken line, Since the load 7 bites into the bottom surface of the pallet 68 and the load 7 stops as it is due to the stopping force, the load 7 is surely stepped.

Further, since the movable rail 16 moves gently in the discharge end direction X to prevent a large inertial force from acting on the load 7, the load transfer rotary wheel 24 rotates in the clockwise direction (see FIG. 7). ) Can be blocked.

Further, the back-feeding prevention piece 36 has a sharp tip.
Since 37 is formed, the moving rail 16 moves in the loading end direction Y.
When moving to, the apex of the top end 37 bites into the bottom surface of the pallet 68 of the load 7, the load 7 is fixed integrally with the fixed rail 11 and the support frame 41, and only the moving rail 16 is moved in the loading end direction Y. Can be moved.

Further, the arrangement interval of the back-feeding prevention piece 36 is equal to the load 7
Since the load 7 is set to have a dimension smaller than the front-back direction dimension, that is, a dimension in the transport direction, the load reverse feeding prevention piece 36 engages with the load 7 at any position of the moving rail 16, and the load 7 does not reverse the load 7. Delivery is reliably prevented.

Further, as shown in FIG. 3, the carry-in port 8
Since the reverse load preventing portion 36 is not provided within the range corresponding to the dimension of the load 7 in the transfer direction, when the forklift load 7 (not shown) is loaded into the carry-in port 8, the load transfer rotary wheel is loaded. Even if a large drop impact force is applied to 24, the impact force does not act on the load reverse feed preventing portion piece 36, and the load reverse feed preventing portion piece 36 is prevented from being damaged.

Further, as shown in FIG. 3, the arrangement intervals of the reverse load preventing portion 36 located near the carry-in port 8 are set denser than the position near the carry-out port 9. The load 7 near the carry-in port 8 that easily causes back-feeding is reliably prevented from being back-fed by the load back-feeding prevention piece 36, and the back-loading burden on the load back-feeding prevention piece 36 near the carry-in 8 is large. The width is reduced.

Since the moving rail 16 returns to the carry-in port 8 side after one cycle and rests at that position, the load 7 located at the carry-out port 9 is strongly carried out by the load 7 near the carry-in port 8. It is prevented from being pushed in the direction X,
The load 7 located at the carry-out port 9 can be easily carried out without being restricted by the load 7 closer to the carry-in port 8 than that.

In the embodiment shown in FIGS. 1 to 10, the rolling wheels 20 for lightly reciprocating the moving rail 16 with respect to the fixed rail 11 are pivotally supported by the moving rail 16, but the rolling wheels 20 May be pivotally supported on the fixed rail pieces 12, 13 of the fixed rail 11.

Further, in the embodiment shown in FIGS. 1 to 10,
A support frame 41 having a channel-shaped cross section is fixed to the inner side surface of the fixed rail portion 12 from a position approaching the carry-out port 9 from the carry-in port 8 by a dimension in the carrying direction of the load 7 to the carry-out port 9, but as shown in FIG. Such supporting frame pieces 70 may be arranged at predetermined intervals, and the load reverse feeding preventing section piece 36 may be pivotally supported by the supporting frame piece 70 and the fixed rail section piece 12 via the pivot 40.

Further, instead of the reverse load preventing piece 36 having the apex 37 at the top end, as shown in FIG.
It is also possible to form the top end of 71 on the uneven arc surface 72, and instead of letting the tip sharpened part 37 into the pallet 68 of the load 7, apply a large frictional force to the uneven arc surface 72 on the pallet 68.

Furthermore, as shown in FIGS. 13 to 14, the reverse load preventing piece 73 may be constructed.

The reverse load preventing portion 73 is made of a metal body 74 having a top end portion 75 and a lightening portion 76 at the upper portion, a pivot support hole 77 and a weight portion 78 therebelow, and a main body 74. Apex 75
When the top of the rubber curved abutting portion 79 comes into contact with the bottom surface of the pallet 68 of the load 7, the rubber curved abutting portion 79 protruding upward and curved to be freely fitted into the The bending contact portion 79 is deformed so that a large frictional force acts on the pallet 68.

Further, the body 74 of the reverse load preventing piece 73 may be made of synthetic resin instead of being made of metal, and a metal weight may be integrally embedded in the lower portion of the body 74.

In this embodiment, since the local sharpening force does not act on the pallet 68 of the load 7, the pallet 68 is not easily scratched.

In addition, the reverse load preventing piece 73 of the load is shown in FIGS.
As shown in FIG. 5, a rubber curved contact portion 79 may be baked on the top end portion 75 of the lightening portion 76 to be completely integrated.

Further, as shown in FIGS. 17 to 18,
An auxiliary rotary wheel 69 is rotatably attached to the inside of the support frame 41 at the same height as the load transfer rotary wheel 24 over a range from the carry-out port 9 to a stroke longer than the stroke L of the air cylinder 33.

Further, an intermediate rail 80 is arranged in the widthwise center of the pair of left and right fixed rails 11 in parallel with the fixed rail 11 from the carry-in port 8 to the carry-out port 9, and is supported over the entire length of the intermediate rail 80. The support rollers 81 may be pivotally mounted at equal intervals so that the top surface of the roller 81 is slightly lower than the top surface of the load transfer rotary wheel 24. With this structure, the load 7 is large. When the central portion of the pallet 68 in the width direction is deformed downward, a part of the weight of the load 7 is supported by the intermediate rail 80 and the support roller 81, and the fixed rail 11, the moving rail 16 and the load transfer rotary wheel 24 are properly supported. It is possible to apply various loads.

Moreover, the support frame is located near the carry-out port 9.
Since the auxiliary rotary wheel 69 is pivotally supported at the same height as the load transfer rotary wheel 24 in a range wider than the sprocket L of the moving rail 16 at 41, the load 7 is transferred by the auxiliary rotary wheel 69 at the carry-out port 9. It is stably supported regardless of the reciprocating movement of the moving rail 16.

[Brief description of drawings]

FIG. 1 is a side view illustrating an embodiment of a fluidized shelf according to the present invention.

FIG. 2 is a front view of a fluidized shelf viewed from a carry-out port.

FIG. 3 is a plan view of FIG.

FIG. 4 is an enlarged plan view of an essential part of FIG.

5 is a cross-sectional view taken along the line VV of FIG.

6 is a cross-sectional view taken along the line VI-VI of FIG.

FIG. 7 is a view taken along the line VII-VII in FIG.

FIG. 8 is an enlarged side view of a main part of FIG.

9 is a view on arrow XX in FIG. 5. FIG.

FIG. 10 is a control diagram of a fluidized shelf.

FIG. 11 is a perspective view of a main part of another embodiment in which a pivotal portion of a connecting member is changed.

FIG. 12 is a side view of another support frame piece.

FIG. 13 is a side view of still another uneven arc surface.

FIG. 14 is an exploded perspective view of the uneven arc surface shown in FIG.

FIG. 15 is a side view of still another reverse load preventing piece.

16 is a vertical cross-sectional view taken along the line XVI-XVI of FIG.

FIG. 17 is a plan view of another embodiment of the fluidized shelf.

18 is a view on arrow XVIII-XVIII in FIG.

[Explanation of symbols]

1 ... fluid shelf, 2 ... pillar, 3 ... transverse beam, 4 ... braces, 5
... Shelf booth, 6 ... Rail device, 7 ... Load, 8 ... Carrying port, 9 ...
Unloading port, 10 ... Stopper, 11 ... Fixed rail, 12,13 ... Fixed rail piece, 14 ... Bolt, 15 ... Opening, 16 ... Moveable rail,
17 ... Hole, 18 ... Shaft, 19 ... Bearing, 20 ... Rolling wheel, 21 ... Shaft, 22 ...
Sleeve, 23 ... Ball bearing, 24 ... Rotating wheel for load transfer, 25 ... Bolt nut, 26 ... Mounting plate, 27 ... Gusset plate, 28 ... Bolt nut, 29 ... Connecting rod, 30 ... Mounting plate, 31 ... Bolt nut, 32 ... Cylinder support member, 33 ... Air cylinder, 34 ...
Piston rod, 35 ... Connecting member, 36 ... Reverse load prevention piece, 37 ...
Sharp tip, 38 ... Loading side, 39 ... Lower part of weight, 40 ... Axis, 41 ... Support frame, 42 ... Opening, 43 ... Loading edge, 44 ... Air pressure control circuit, 45 ... Air pressure source, 46 ... Supply Tube, 47 ... filter,
48 ... Pressure reducing valve, 49 ... 5-port 2-position electromagnetic switching valve, 50, 51,
52, 53, 54 ... Port, 55, 56 ... Air supply / exhaust pipe, 57 ... Delivery side cylinder chamber, 58 ... Delivery side cylinder chamber, 59, 60 ... Flow control valve with check valve, 61 ... Control computer, 62 ... Delivery Ready indicator light, 63 ... Unloadable indicator light, 64 ... Start button, 65 ... Loading side load detector, 66 ... Unloading side load detector, 67 ... Call button,
68 ... Pallet, 69 ... Auxiliary rotating wheel, 70 ... Support frame piece, 71 ... Load reverse feed prevention piece, 72 ... Uneven arc surface, 73 ... Load reverse feed prevention piece,
74 ... Main body, 75 ... Top end, 76 ... Lightening portion, 77 ... Pivot hole, 78
… Weight part, 79… Rubber curved contact part, 80… Intermediate rail, 81
… Support rollers.

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[Procedure amendment]

[Submission date] September 12, 1994

[Procedure Amendment 1]

[Document name to be amended] Statement

[Name of item to be corrected] 0030

[Correction method] Change

[Correction content]

[0030]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of the present invention shown in FIGS. 1 to 10 will be described below.

Claims (11)

[Claims] 1. At least a pair of left and right long fixed rails that are installed in parallel with each other at right and left sides in parallel with each other in the front-rear horizontal direction, and are supported by the fixed rails so as to be capable of reciprocating back and forth. A pair of left and right movable rails, and a plurality of load transfer members that are rotatably supported on the upper portion of the movable rails and project upward from the fixed rails at predetermined intervals along the longitudinal direction of the movable rails. A pair of left and right moving rails are integrally connected to each other by a connecting rod, reciprocating drive means for reciprocating the connecting rod back and forth is provided, and at least one side of the fixed rail is provided. The eccentric weight of the lower part of the load backfeed prevention part pivotally supports the plurality of load backfeed prevention parts in an upright posture, and the tops of the load backfeed prevention parts tilt from the upright posture toward the carry-out port. Uru, but not to be able to tilt in the opposite direction from the standing posture And the top surface of the load transfer rotary wheel is set to be lower than the height of the top end of the load back-feed prevention part in the upright posture, and the top end of the load back-feed prevention part is conveyed. A fluidized shelf which is locked to a bottom surface of a load on the load transfer rotary wheel in a state of being inclined toward an outlet. 2. A plurality of rolling wheels capable of rolling on the tread surface of the fixed rail are rotatably supported by the movable rail at predetermined intervals along the longitudinal direction of the movable rail. The fluidized shelf according to claim 1, which is characterized in that. 3. A plurality of rolling wheels are rotatably supported on the fixed rail at predetermined intervals along the longitudinal direction of the fixed rail, and the moving rail moves while being supported by the rolling wheels. The fluidized shelf according to claim 1, wherein the fluidized shelf is provided. 4. The fluidized shelf according to claim 1, wherein a top portion of the back-feeding prevention piece is formed to have a high rigidity and a sharp tip. 5. The fluidized shelf according to claim 1, wherein a top portion of the back-feed preventing portion is formed in a curved shape which is rich in elasticity and protrudes upward. 6. The fluidized shelf according to claim 1, wherein an arrangement interval of the back-feed preventing portions is set to a dimension smaller than a dimension of a load in the front-rear direction. 7. The fluidized shelf according to claim 1 or 4, wherein the back-feeding prevention piece does not exist within a range corresponding to a front-back dimension of a load from a carry-in end of the fluidized shelf. 8. The above-mentioned claim 1 or claim 6 or claim 7, characterized in that the arrangement interval of the back-feeding prevention piece located near the carry-in port is set to be closer than that of the other positions.
Fluid shelf described. 9. The stroke of the reciprocating drive means from the carry-out port to the carry-in port in a state where the top surface of the auxiliary rotary wheel is positioned at substantially the same height as the top surface of the load transfer rotary wheel. 2. The fluidized shelves according to claim 1, wherein a plurality of the shelves are arranged in a range corresponding to. 10. The fluidized shelf according to claim 1, wherein the return rest position of the moving rail is set on the carry-in side. 11. The fluidized shelf according to claim 1, wherein the moving speed of the moving rail moving from the carry-in port to the carry-out port is set to be slower than the moving speed of moving from the carry-out port to the carry-in port. .