JPH05254611A - Load receiving platform device - Google Patents

Abstract

PURPOSE:To realize the elevator mechanism of a load supporting body by a lift device which has the simple structure and with which simple control is enabled and automatic center adjustment can be carried out in reasonable manner in the lateral direction on the supporting body side according to the attiude of the load, by utilizing the flexible deformation against the elasticity of a flexible body, and the transferring work by a load transferring means can be carried out always correctly without incurring the damage to each part due to the load. CONSTITUTION:A lower rank strip member 22 and an upper rank strip member 23 are fitted through the fitting surfaces 22a and 23a having each truncated shape, and a lift unit body 21 is formed by arranging an expandable flexible body 24 between both the fitting surfaces 22a and 23a, and a lower stage lift device 30 is constituted by arranging the lift unit bodies 21 in parallel, and an upper stage lift device 31 is constituted by arranging a plurality of lift unit bodies 21 in parallel in the direction crossing between the upper rank strip members 23 of the lower stage lift device 30, and a load supporting body 33 having a guide body 34 is installed on the upper rank strip member 23 of the upper stage lift device 31, and a transferring device 38 in the lateral direction is installed between the load supporting bodies 33.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a cargo tray device installed in a cargo handling facility such as a moving rack facility or an automatic warehouse facility.

[0002]

2. Description of the Related Art Conventionally, as this type of load receiving device, for example, an article transfer rocking roller conveyor device as disclosed in Japanese Patent Publication No. 47-10500 is provided. In this conventional configuration, a support base is installed on the floor side, and a rocking roller conveyor is arranged between the support parts of the support base. Then, by operating the drive motor or the like, the rocking roller conveyor is moved up and down to move back and forth with respect to the supporting portion, so that the article placed on the rocking roller conveyor is passed to the supporting portion or supported by the supporting portion. The item is being lifted by a rocking roller conveyor. Also, in Japanese Patent Publication No. 57-54409, a reverse type is provided, and in this conventional type, the carrier is constructed so that it can be raised and lowered by a lifter with respect to the conveyor.

[0003]

According to the conventional structure as described above, when a load is transferred to a support base or a loading platform by a carrier or the like, the load may be shifted due to a stop position shift or a load shift of the carrier. When the posture (position) of is disturbed, the load is guided by the support base and the guide body provided on the side of the load, and correction is made.
Since the pedestal and the loading platform are fixed or only move up and down, it is impossible to correct the posture when the turbulence is large, and a large load is applied to at least one of the pedestal, the loading platform, the carrier, and the load, resulting in damage. In addition, it cannot be delivered accurately.

It is an object of the present invention to provide a load-carrying cradle device which can automatically and reasonably adjust the posture of a disturbed load by its lifting mechanism when the load support is raised and lowered.

[0005]

In order to achieve the above-mentioned object, a load carrier device of the present invention is a load carrier device to which a load is transferred by a load transfer means, and comprises a lower strip material and an upper strip material. A lift unit is formed by fitting through a trapezoidal mating surface and arranging a flexible body that can expand and contract between both mating surfaces.
A plurality of the lift units are arranged side by side to form a lower stage lift device, and a plurality of lift units in a direction intersecting with the lower stage lift device are arranged side by side between the upper strips of the lower stage lift device to form the upper stage lift device. A plurality of load supports having guide bodies inclined outward are provided on the upper strip of the upper lift device, and a lateral transfer device is provided between the load supports.

[0006]

According to the structure of the present invention, the flexible members of both lift devices are reduced to lower the upper strip member with respect to the lower strip member, so that the guide member is immersed in the transport surface of the transport device. As a result, the loading and unloading of the load with respect to the transport device can be performed without any trouble.

With the loaded load being located on the transfer device, the flexible members of both lift devices are inflated to raise the upper strip material relative to the lower strip material, thereby raising the load support in multiple stages. Can be done. Then, the load support, which is higher than the transport surface due to the rise, contacts the corner of the load on the transport device,
You will have to lift this load. At that time, when the posture of the load is disturbed (positional shift), the rising inclined surface of the guide body first comes into contact with the lower portion of the load, and the inclined surface rises in this contact state. Then, the upper strip moves laterally within the clearance with respect to the lower strip while flexibly deforming each expanded flexible body against the elasticity, and as a result, depending on the posture of the load, the load support side. Is displaced laterally, that is, after self-aligning, the load support comes into contact with the bottom surface of the load. When the load is continuously lifted by the load support, the frictional resistance of the load to the transport device disappears, and the load,
That is, the load support group returns to its original position by the elastic restoring force of each flexible body. Therefore, the load is accurately supported on the load support group side, and the transfer operation by the load transfer means can be performed accurately.

When the load is transferred by the load transfer means to the lifted load support in the reverse operation, when the stop position of the load transfer means is displaced or the posture of the load is disturbed, The load contacts the guide body, and the load support side is automatically aligned in the same manner as described above. Then, the load is received by the load support and the supporting friction by the load transfer means is released, so that the load, that is, the load support group, returns to the original position by the elastic restoring force of each flexible body. Therefore, the load is accurately supported on the load support group side. Next, the load is delivered to the transport device by lowering the load support group, and is unloaded.

[0009]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment in which the cargo tray device of the present invention is installed in a cargo handling facility of a moving rack facility will be described below with reference to FIGS.

Reference numeral 1 designates a pair of front and rear fixed shelves. These fixed shelves 1
A plurality of movable shelves 2 which are reciprocally movable in the front-rear direction, which is the direction between the fixed shelves, are arranged therebetween. Each of the shelves 1 and 2 has a plurality of compartment storage spaces 3 in the vertical direction and the horizontal direction. Each movable rack 2 has a pair of front and rear flanged wheels 5 on side lower frames 4 at both left and right ends, and a pair of left and right intermediate lower frames 6 located inside is divided into two in the front-rear direction. Each has a pair of front and rear wheels 7 without a brim.

The movable rack 2 is mounted on rails 8 and 9 laid on the floor side via wheels 5 and 7, and a motor (traveling drive device) 10 mounted on each is linked to the collarless wheels 7. By doing so, it becomes possible to reciprocate separately on the fixed route 11 which is the front-back direction. Here, the installation interval of the fixed shelves 1 is set so as to form a working space S having a dimension slightly longer than the depth dimension (front-back dimension) of the compartment storage space 3.

The intermediate lower frame 6 is in the shape of a gate rail, and the front and rear ends of the intermediate lower frame 6 are optoelectronic switches 12, which are an example of a transceiver for transmitting movement control signals, and can oppose the optoelectronic switches 12. A reflective plate 13 is attached. The photoelectric switch 12 or the reflector 13 is also attached to the corresponding position of the fixed shelf 1.

A cargo handling area 15 is formed on the outer side of the shelves 1 and 2 in the left-right direction. Then, in the cargo handling area 15 and at a position outside one end of the fixed shelf 1, a cargo cradle capable of transferring the cargo 16 to and from a loading / unloading device (an example of cargo transfer means, which will be described in detail later). A device 20 is provided.

A plurality of lift units 21 are used to construct the load receiving device 20. Each lift unit 21 has a lower strip 22 having a trapezoidal convex fitting surface 22a that is convex upward and an upper strip 23 that has a trapezoidal concave fitting surface 23a that is concave downward.
And a flexible body 24 which is arranged between the two fitting surfaces 22a and 23a in substantially the entire length in the longitudinal direction and is expandable and contractible, and the strip members 22 and 23 are provided with the fitting surfaces 22a and 23a therebetween. Can be fitted freely. The lower strip 22 integrally has a flange member 22b extending outward from both lower edges. The flexible body 24 has, for example, a tubular shape, and a connector 25 is provided at one end thereof.

The lower lift device 30 is constructed by arranging a plurality (a pair in the embodiment) of the single lifts 21 having such a configuration on the floor surface (or base body) in parallel. At that time, the flange member 22b of the lower strip 22 is fixed to the floor side via a fixture (bolt nut or the like) 26. Then, a plurality of lift units 21 (a pair in the embodiment) in a direction intersecting with the lower lift device 30 (orthogonal shape) are arranged side by side across the upper strips 23 in the lower lift device 30 to form the upper lift device 31. I am configuring. At that time, the flange member 22b of the lower strip 22 of the upper lift device 31 is fixed to the upper strip 23 of the lower lift device 30 via the fixture 27.

The connecting member 25 of the flexible member 24 in each of the lift devices 30 and 31 is connected to a compressed air supply device 35 via a pipe (hose) 36 and an operating section (valve) 37. Therefore, by supplying the compressed air from the supply device 35 to the flexible members 24 of the lift devices 30 and 31, both the flexible members 24 are expanded and the upper strip member 23 is raised with respect to the lower strip member 22 ( (See FIG. 4), so that it is possible to perform two-step ascent as a whole. Further, by discharging the compressed air in the flexible members 24 of the lift devices 30 and 31, both the flexible members 24 can be reduced and the upper strip member 23 can be lowered relative to the lower strip member 22 (see FIG. 3). ), Then both mating surfaces 22
The a and 23a are deeply fitted to each other so that their inner side surfaces are in contact with each other.

Posts 32 are erected from both ends of the upper strip 23 of the upper lift device 31 in the longitudinal direction.
A rectangular block-shaped load support 33 is provided on the upper end of 32.
A guide body 34 having a guide surface 34a that is inclined upward and outward is provided continuously from the two outer surfaces of the load support body 33.

A roller conveyer 38, which is an example of a conveying device for conveying in the lateral direction, is disposed so as to be located between the load supports 33 in a plan view.
It is fixed to the floor side through 39. Here, the roller conveyor 38 is, as described above, when the overall two-step upward movement is performed, the load support 33 is positioned higher than the transportation surface, and when the downward movement is performed, the transportation surface is moved. On the other hand, the guide body 34 is arranged at a position where the guide body 34 is retracted, and the lift amount by both lift devices 30 and 31 is set.

A conveyor device 40 is arranged on the opposite side of the shelves 1 and 2 with the cargo handling area 15 inside. The conveyor device 40 connects the transfer parts 41 extending from the sides of the load receiving device 20 to the side opposite to the fixed shelf 1 and the outer ends of these transfer parts 41, and is located outside the cargo handling field 15. Storage department
42 and are formed in a U shape in a plan view. Here, the transfer section 41 is set to the same level as the roller conveyor 38. At the other end of the delivery section 41, a delivery tool 43 for delivering the load 16 to and from the storage section 42 is arranged. The conveyor device 40 is composed of a roller conveyor or the like, and the transfer tool 43 is composed of a chain conveyor or the like which can be raised and lowered between the rollers.

The left and right crane rails 45 are provided on the upper portions of both fixed shelves 1, respectively.
One end side in the length direction of 45 extends above the material handling area 15, and the other end side extends outward from the other end surface of the fixed shelf 1 by a set distance L. Both crane rails 45 and wheels 46
The girder 47 which is supported and guided by means of the traveling drive device 48 mounted on the girder 47 can be moved in the left-right direction between the shelves 1 and 2 and the cargo handling area 15 in the horizontal direction.

A loading / unloading device 50 which is supported by the guide portion 47a of the girder 47 in a suspended manner and is movable in the front-rear direction.
Is provided. The loading / unloading device 50 is an example of the load transfer means as described above, and its main body is composed of the upper frame 51 supported and guided by the guide portion 47a via the ring, and the left and right end portions of the upper frame 51. Posts installed vertically
Lower frame that connects between 52 and the lower part of these posts 52
The front and rear surfaces are formed into an open frame by 53 and. The length in the front-rear direction is set to be slightly shorter than the length of the work space S, so that the loading / unloading device 50 can be moved in the work space S in the left-right direction.

On the upper frame 51 of the loading / unloading device 50, a lateral movement device 54 interlocking with the wheel is mounted. Between both posts 52, a carriage 56 that is movable up and down by an operation of an elevating / lowering device 55 arranged on the upper frame 51 is provided, and the carriage 56 is operated in the forward / backward direction (lateral direction) by an operation of a retracting / retracting device 57. ) In / out tool 58
Is provided.

The girder 47 supported and guided by the crane rail 45 travels to one end side to move the girder 47 in and out.
All of the 50 is located in the loading and unloading area 15 to enable the delivery of the load 16 to and from the load receiving device 20, and the girder 47 travels to the other end side, so that part of the upper frame 51 or the other The posts 52 and the like are projected into the installation space 59, so that the loading / unloading tool 58 shorter than the girder 47 in the left-right direction is attached to the shelf 1,
It can face the compartment storage space 3 located at the other end of 2.

By extending the other end side in the length direction of the crane rail 45 outward by a set distance L, a dead space is formed outside the other end surfaces of the shelves 1 and 2, and the dead space is set as the installation space 59. As a result, the control devices 60 for the movable shelves 2 are provided on the floor side. Here, the control device 60 is connected to the corresponding mobile shelf 2 via a branch cable 61. Further, adjacent control devices 60 are connected to each other by a sub cable 62 arranged on the floor side. In the installation space 59, a centralized control device 63 is arranged so as to face one of the fixed shelves 1, and the centralized control device 63 is connected to an adjacent control device 60 via a main cable 64. The cables 61, 62, 64 are for transmitting and receiving signals and supplying power.

The traveling of the girder 47 and the movement of the loading / unloading device 50 are carried out by the conventional overhead crane control system, and the raising / lowering movement of the carriage 56 and the moving of the loading / unloading device 58 are carried out by the conventional crane control system of the automatic warehouse. Each is controlled appropriately.

Next, the operation of the above embodiment will be described. To store the load 16, the load 16 is first passed to the storage unit 42 by a forklift or the like. At that time, the fork acts on the pallet supporting the load 16 and is subsequently handled via the pallet. Load 16 delivered on this storage unit 42
Is transported in either direction by the transporting force, and is delivered to the delivery section 41 via the delivery tool 43. Then, the load 16 is conveyed by the conveying force of the transfer unit 41 and is received by the roller conveyor 38.

At this time, in the load receiving device 20, both lift devices
By discharging the compressed air in the flexible body 24 of 30, 31,
As shown in FIG. 2, both flexible bodies 24 are contracted so that the upper strip 23 is lowered with respect to the lower strip 22. As a result, as shown by the solid line in FIG. When the body 34 is immersed, the load 16 is carried into the roller conveyor 38 without any trouble.

With the load 16 transferred to the roller conveyor 38, the compressed air from the supply device 35 is supplied to the flexible members 24 of both lift devices 30 and 31. As a result, as shown in FIG. 24 is expanded to raise the upper strip (23) with respect to the lower strip (22), and thus the load support (33) is moved in two steps. Then, the load support 33, which is higher than the transport surface due to the ascent, abuts the corner portion of the load 16 on the roller conveyor 38,
16 will be lifted as shown in phantom in FIG.

At this time, when the posture of the load 16 is disturbed (displacement), the guide surface 34a of the guide body 34 which is first raised is placed in the load.
It contacts the lower part of 16, and in this contact state, the guide surface 34a rises. Then, the upper flexible member 23 laterally moves within the clearance range with respect to the lower flexible member 22 while flexibly deforming each inflated flexible member 24 against the elasticity, whereby the upper flexible member 23 is moved depending on the posture of the load 16. As a result, the load support 33 side is displaced in the lateral direction, that is, after self-aligning, the load support 33 contacts the bottom surface of the load 16. When the load 16 is subsequently lifted up and lifted by the load support 33, the frictional resistance of the load 16 to the conveyor device 38 is eliminated, and the load 16, that is, the load support 33 group, is formed by the flexible members 24.
The elastic restoring force of returns to the original position.

In this state, first, the girder 47 is caused to travel above the material handling area 15 by the support guide on one end side of the crane rail 45, and the empty loading / unloading device 50 is positioned in the material handling area 15. Then, the lateral movement device 54 is operated to move the device 50 in and out.
Is moved in the front-rear direction by the support guide of the guide portion 47a and stopped at a position close to the load receiving device 20. In this state, a combined operation of moving the carriage 56 up and down and moving the loading / unloading tool 50 back and forth is performed.
Is taken in and out by the device 50.

Before and after this work, the movable rack 2 group is moved so that the work space S is formed in front of the target compartment storage space 3. This movement of the second group of movable shelves is performed by sending an instruction signal from the centralized control device 63 to the main cable 64 or the sub cable.
The target control device 60 is provided via 62, and this control device 60
Moving shelf 2 receives the instruction signal from 60 via branch cable 61.
It can be done by giving it to the side. That is, the wheel 10 without a collar is forcibly rotated by the motor 10 based on the instruction signal, and the movement is performed on the fixed path 11 while being supported by the rails 8 and 9 via the wheels 5 and 7. At that time, a movement control signal is transmitted and received between the photoelectric switch 12 and the reflection plate 13, so that the movement of the movable rack 2 is controlled without collision.

With the working space S thus formed, the actual take-out device 50 is operated by the operation of the lateral action device 54.
It is moved in the front-rear direction by the support guide of the guide portion 47a and positioned outside the end of the work space S. Then, the girder 47 is moved by the traveling drive device 48, and the loading / unloading device 50 is moved within the work space S. And the access device 50
In the state in which the target compartment is opposed to the front of the compartment storage space 3 and stopped, the combined operation of the ascending / descending movement of the carriage 56 and the retracting / retracting of the loading / unloading tool 58 is performed as described above, and thus the target compartment The load 16 can be stored in the storage space 3.

The unloading of the load 16 is performed by the empty loading / unloading device 50 located outside the end of the work space S in the same manner as described above.
Is moved in the work space S so as to face the front of the target compartment storage space 3 and stopped, and then the loading / unloading device 50 is operated to take out the load 16 from the target compartment storage space 3. Then, the loading / unloading device 50 supporting the load 16 is moved within the work space S and stopped at the loading / unloading area 15.

The loading / unloading device 50 that has come out to the loading / unloading area 15 in this way moves in the loading / unloading area 15 in the front-back direction,
It is stopped at a position close to one of the load receiving tray devices 20. In this state, a combination operation of raising and lowering the carriage 56 and moving in and out of the loading / unloading tool 58 is performed, and thereby the load 16 on the loading / unloading device 50 is transferred to the load receiving device 20.

At that time, in the load receiving device 20, the load support 33 is in the raised position, and therefore the stop position of the loading / unloading device 50 is displaced or the posture of the load 16 is disturbed. When contacted, the load support is carried out in the same manner as described above.
The 33 side is automatically aligned. Then, the load 16 is received by the load support 33, so that the support friction by the transfer tool 43 is released, and thus the load 16, that is, the load support 33 group, is moved by each flexible member 24.
The elastic restoring force of returns to the original position.

Next, the load 16 on the load receiving device 20 is a load support.
The group of 33 descends to be transferred to the roller conveyor 38, and is conveyed from the roller conveyor 38 to the transfer section 41, and is transferred by the transfer force of the transfer section 41. Then load 16
After being delivered to the storage unit 42 via the delivery tool 43, it is transported to a predetermined position. Thereafter, the load 16 is taken out by a forklift or the like. As described above, the conveyor device 40 is used not only for loading and unloading the load 16 but also for order picking work.

FIG. 8 shows another embodiment of the present invention. That is, a rail 70 is laid along the left-right direction on the floor outside the one end of the fixed shelf 1 and facing the loading and unloading area 20, and the rail 70 is supported and guided via the wheels to the left-right direction. A carriage 72 is provided which is capable of reciprocating movement on a movement path 71 along the. This trolley 72 is of a self-propelled type, and can travel between a first home position H ₁ that is close to the fixed shelf 1 and a second home position H _{2 that} is separated from the fixed shelf 1. A table device 20 is provided.

In the above embodiment, the convex fitting surface 22a is formed on the lower strip 22.
While the concave fitting surface 23a is formed on the upper strip 23 in addition to the above, this may be reversed, that is, the lower strip 22 side may be concave and the upper strip 23 side may be convex. Further, although the roller conveyor 38 is used as the carrying device, this may be another means such as a chain conveyor. In the above-mentioned embodiment, the cargo receiving stand apparatus 20 is used for the moving shelf equipment, but it can be applied to various types and equipments such as the cargo stand apparatus 20 of the automatic warehouse with the shelf fixed.

[0039]

According to the present invention having the above-described structure, the flexible members of both lift devices are reduced in size to lower the upper strip member with respect to the lower strip member, so that the guide member is mounted on the transport surface of the transport device. It is possible to immerse and unload, so that loading and unloading of a load to and from the transport device can be performed without any trouble. At that time, the guide body, that is, the lifting / lowering mechanism of the load support can be realized by a lift device whose structure and control are simple. Further, by utilizing the flexible deformation against the elasticity of the flexible body, the posture of the load, etc. Accordingly, the load support side can be automatically aligned in the lateral direction without difficulty, and therefore the transfer operation by the load transfer means can always be performed accurately without causing damage to each part due to the load.

[Brief description of drawings]

FIG. 1 is a front view of a cargo tray device according to an embodiment of the present invention.

FIG. 2 is a partially cutaway plan view of the cargo cradle device.

FIG. 3 is a front view of a main part of the lift device section during a lowering operation.

FIG. 4 is a front view of a main part of the lift device section during a lifting operation.

FIG. 5 is a perspective view of the same mobile shelf equipment.

FIG. 6 is a plan view of the mobile rack facility.

FIG. 7 is a side view of the mobile rack facility.

FIG. 8 is a perspective view of a moving rack facility according to another embodiment of the present invention.

[Explanation of symbols]

 1 Fixed Shelf 2 Moving Shelf 3 Compartment Storage Space 11 Fixed Route 15 Cargo Handling Area 16 Cargo 20 Cargo Stand Device 21 Lift Single Unit 22 Lower Material 22a Convex Fitting Surface 23 Upper Material 23a Concave Fitting Surface 24 Flexible Body 30 Lower Lifting device 31 Upper stage lifting device 33 Cargo support 34 Guide body 34a Guide surface 38 Roller conveyor (conveying device) 40 Conveyor device 41 Transfer part 42 Storage part 45 Crane rail 47 Girder 50 Loading / unloading device (loading / transferring device) 56 Carriage 58 Loading / unloading Tool 72 trolley S work space

Claims (1)

[Claims] 1. A load receiving device in which a load is transferred by a load transferring means, wherein a lower strip material and an upper strip material are fitted through a trapezoidal fitting surface, and between the both fitting surfaces. A lift unit is formed by arranging a flexible body that can be freely expanded and contracted, and a plurality of the lift units are arranged side by side to form a lower stage lift device, and the lower stage lift device extends between the upper strips of the lower stage lift device. And a plurality of single lifts in a direction intersecting with each other constitute an upper stage lift device, and a plurality of load supports having a guide body inclined outward are provided on the upper strip of the upper stage lift device to support each load. A cargo cradle device comprising a lateral transport device provided between the bodies.