Article conveyance apparatus

Abstract

To enable the running of an apparatus which conveys an article even if there are different ground levels in a building.SOLUTION: An article conveyance apparatus runs on a rail installed on a floor and conveys an article in a storage. The apparatus comprises: a first frame 20 having a prescribed height; a second frame 30a which can rise and fall within a prescribed range relative to the first frame 20; and a lifting body 40 which can rise and fall within a prescribed range relative to the second frame 30a and is mounted with the article. The lifting body 40 can rise to a position higher than the height of the first frame 20 by the rise of the lifting body 40 accompanied by the rise of the second frame 30a.SELECTED DRAWING: Figure 1

Description

[Technical field]

[0001] The present invention relates to an article handling device. [Background technology]

[0002] As a stacker crane for storing and retrieving goods in a multi-story warehouse, for example, there is a stacker crane disclosed in Patent Document 1. This stacker crane includes a transfer cart or a transfer fork on which goods can be loaded, a lifting body on which the transfer cart or the transfer fork can be loaded, a lifting device for lifting and lowering the lifting body, and a traveling device for moving the transfer cart on the lifting body along the multiple storage shelves of the multi-story warehouse. This traveling device includes a side frame and an upper frame installed at the upper end of the side frame, and the lifting device includes a wire rope for suspending the lifting body, a hoisting device installed on the side frame for winding and unwinding the wire rope for suspending the lifting body, a pulley installed on the upper frame and around which the wire rope is wound, and a sheave box installed on the lifting body and around which the wire rope is wound. In this stacker crane, when the wire rope is wound using the hoisting device, the lifting body rises, and when the wire rope is unwound, the lifting body descends. [Prior art documents] [Patent documents]

[0003] [Patent Document 1] Patent No. 5633134 Summary of the Invention [Problem to be solved by the invention]

[0004] In the case of the above-mentioned stacker crane, if there is a beam of the building lower than the upper frame in the building housing the multi-story warehouse, the side frame will collide with the beam, limiting the movement range of the stacker crane. Also, in the case of the above-mentioned stacker crane, when moving an article from one building to another in adjacent buildings using the stacker crane, if there is a beam of the building between the buildings, the side frame will collide with the beam, so it is necessary to transfer the article to a cart between the buildings, which is time-consuming.

[0005] The present invention has been made in consideration of the above, and has an object to enable an equipment for transporting goods to travel even if there are places in a building where the ground height differs. [Means for solving the problem]

[0006] In order to solve the above-mentioned problems and achieve the object, the item transporting device of the present invention is an item transporting device that runs on rails installed on the floor and transports items within a warehouse, and is equipped with a first frame having a predetermined height, a second frame that can be raised and lowered within a predetermined range relative to the first frame, and a lifting body on which the items are placed, which can be raised and lowered within a predetermined range relative to the second frame, and by the lifting body rising as the second frame rises, the lifting body can be raised to a position higher than the height of the first frame.

[0007] In addition, in the item transport device of the present invention, the first frame may have a plurality of first rollers that limit horizontal movement of the second frame, and the plurality of first rollers may be spaced apart from one another in the direction in which the second frame is raised and lowered.

[0008] In addition, in the item transport device of the present invention, the lifting body may have a plurality of second rollers that limit horizontal movement of the lifting body, and the plurality of second rollers may be arranged at intervals from one another in the direction in which the lifting body rises and falls.

[0009] In addition, in the item transport device of the present invention, the second frame has a first second frame and a second second frame horizontally sandwiching the lifting body, and has a first mechanism for raising and lowering the first second frame by a wire rope, and a second mechanism for raising and lowering the second second frame by a wire rope, and the first mechanism and the second mechanism may be arranged in positional symmetry with respect to the center of the lifting body when viewed from above. Effect of the Invention

[0010] According to the present invention, it is possible for an equipment for transporting goods to travel even if there are places in a building where the ground height varies. [Brief description of the drawings]

[0011] [Figure 1] FIG. 1 is a front view of a main part of a stacker crane according to an embodiment. [Diagram 2] FIG. 2 is a front view of a main part of the stacker crane according to the embodiment. [Diagram 3] FIG. 3 is a cross-sectional view taken along line AA in FIG. [Figure 4] Figure 4 is a schematic diagram of a building in which a stacker crane is installed. [Diagram 5] Figure 5 is a schematic diagram of a building in which a stacker crane is installed. [Figure 6] FIG. 6 is a schematic diagram of a modified example in which the lifting body is lifted and lowered. DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS

[0012] Hereinafter, an embodiment of the present invention will be described in detail with reference to the accompanying drawings. Note that the present invention is not limited to the embodiment described below. In addition, in the description of the drawings, the same or corresponding elements are appropriately given the same reference numerals. Furthermore, it should be noted that the drawings are schematic, and the dimensional relationship of each element may differ from the actual one. There may be parts in which the dimensional relationship and ratio are different between the drawings. In addition, an orthogonal coordinate system of the X-axis, Y-axis, and Z-axis is appropriately shown in the drawings, and the directions are explained using this. In the space shown in the orthogonal coordinate system, the direction in which the X component increases is called the +X direction, and the direction in which the X component decreases is called the -X direction. Similarly, the Y and Z components are defined as the +Y direction, -Y direction, +Z direction, and -Z direction. Note that, for convenience of explanation, the +Z direction may be referred to as the upward direction, the -Z direction may be referred to as the downward direction, and the Z axis direction may be referred to as the up-down direction.

[0013] [Embodiment] 1 and 2 are front views of the main parts of a stacker crane 1 according to an embodiment of the present invention. The stacker crane 1 is an example of an article transport device. Fig. 1 shows a state in which a lifting body 40 provided on the stacker crane 1 is lowered, and Fig. 2 shows a state in which the lifting body 40 provided on the stacker crane 1 is raised. Fig. 3 is a cross-sectional view taken along line AA in Fig. 1. Note that Fig. 3 omits the illustration of a cab 2, which will be described later.

[0014] The stacker crane 1 is a floor-mounted, load-lifting stacker crane. The stacker crane 1 is installed, for example, in an area equipped with a multi-story warehouse. The stacker crane 1 travels on rails installed on the floor of the area in which the stacker crane 1 travels, and an operator operates the stacker crane 1 to store and remove items from the multi-story warehouse. The stacker crane 1 includes a driver's cab 2, a hoisting device 3, frames 10a, 10b, fixed masts 20, movable masts 30a, 30b, and a lifting body 40.

[0015] The rectangular parallelepiped frames 10a, 10b each have two wheels 11 aligned in the Y-axis direction at their bottom. The wheels 11 are driven by a drive unit (not shown). The stacker crane 1 runs on rails (not shown) by the driven wheels 11. A fixed mast 20 is provided between the frames 10a and 10b. The frames 10a, 10b and the wheels 11 are an example of a running unit.

[0016] The fixed mast 20, which is an example of a first frame, includes masts 20a, 20b, and a base 20c. The base 20c is parallel to the floor surface and connects the masts 20a, 20b at a predetermined interval. The base 20c includes lower sheaves 24a, 24b. The lower sheaves 24a, 24b are single sheaves. The lower sheave 24a is provided on the side surface on the +Y direction side at the end of the base 20c on the -X direction side, and the lower sheave 24b is provided on the side surface on the +Y direction side at the end of the base 20c on the +X direction side. The lower sheaves 24a, 24b are hung with wire ropes 4b.

[0017] The mast 20a is columnar and stands upright in the +Z direction from the end of the base 20c on the -X direction side, and the frame 10a is fixed to the -X direction side of the lower part. The mast 20a is provided with a plurality of guide rollers 21a, 22a on the +X direction side. The guide rollers 21a, 22a, which are an example of a first roller, are rollers that guide the moving mast 30a in the up and down direction. The guide rollers 21a are supported by a support part 25a protruding from the mast 20a in the +X direction, and are provided in pairs at a predetermined interval in the Z axis direction so that their rotation axes are along the Y axis direction. The guide rollers 21a limit the movement in the X axis direction of the moving mast 30a, which moves in the up and down direction relative to the mast 20a. The guide rollers 22a are provided at a predetermined interval in the Z axis direction so that their rotation axes are along the X axis direction. The guide rollers 22a limit the movement in the Y axis direction of the moving mast 30a. The mast 20a is also provided with an upper sheave 23a. The upper sheave 23a is provided on the -Y direction side of the upper part of the mast 20a. The wire rope 4a is hung on the upper sheave 23a.

[0018] The mast 20b is columnar and stands upright in the +Z direction from the end of the base 20c on the +X direction side, and the frame 10a is fixed to the lower part on the +X direction side. The mast 20b has a plurality of guide rollers 21b, 22b on the -X direction side. The guide rollers 21b, 22b are rollers that guide the moving mast 30b in the up and down direction. The guide rollers 21b are supported by a support portion 25b protruding from the mast 20b in the -X direction, and are provided in pairs at a predetermined interval in the Z axis direction so that their rotation axes are along the Y axis direction. The guide rollers 21b limit the movement of the moving mast 30b in the X axis direction, which moves up and down relative to the mast 20b. The guide rollers 22b are provided at a predetermined interval in the Z axis direction so that their rotation axes are along the X axis direction. The guide rollers 22b limit the movement of the moving mast 30b in the Y axis direction. The mast 20b also has an upper sheave 23b. The upper sheave 23b is provided on the +Y direction side of the upper part of the mast 20b. The wire rope 4b is hung on the upper sheave 23b.

[0019] The cab 2 is provided on the side surface of the mast 20b on the +X direction side. The cab 2 is equipped with an operation panel (not shown) for performing operations such as running the stacker crane 1, raising and lowering the lifting body 40, and storing and retrieving goods by the transfer machine 44 described later. An operator operates the operation panel of the cab 2 to run the stacker crane 1, raise and lower the lifting body 40, and store and retrieval of goods by the transfer machine 44.

[0020] The hoisting device 3 is provided on the side surface of the mast 20a on the -X direction side. The hoisting device 3 is a device that winds and unwinds the wire ropes 4a and 4b, and includes cylindrical hoisting drums 3a and 3b and a drive unit 3c that rotates the hoisting drums 3a and 3b. The drive unit 3c includes a motor and rotates the hoisting drums 3a and 3b. The hoisting drum 3a winds and lets out the wire rope 4a, and the hoisting drum 3b winds and lets out the wire rope 4b.

[0021] The movable mast 30a, which is an example of the first second frame, is columnar and provided on the +X side of the mast 20a. The movable mast 30a moves up and down in the Z-axis direction, and when it is at its lowest point, its upper end is lower than the upper end of the mast 20a. The movable mast 30a may be configured so that when it is at its lowest point, its upper end is at the same height as the upper end of the mast 20a. The movable mast 30a has an upper sheave 35a at the upper part of the side surface on the +Y side and the upper part of the side surface on the -Y side, and has a lower sheave 36a at the lower part of the side surface on the -Y side. The lower sheave 36a is a movable pulley and is supported by a support part 37a protruding from the side surface on the -Y side of the movable mast 30a. The lower sheave 36a, which is an example of the first mechanism, is hung with a wire rope 4a. The movable mast 30a has recesses 31a and 32a along the Z-axis direction on its -Y side and +Y side, a recess 33a on its -X side, and a recess 34a on its +X side. The recess 31a is a groove for receiving the guide roller 21a and is provided along the Z-axis direction. The recess 32a is a groove for receiving the guide roller 41a (described later) and is provided along the Z-axis direction. The recess 33a is a groove for receiving the guide roller 22a and is provided along the Z-axis direction. The recess 34a is a groove for receiving the guide roller 42a (described later) and is provided along the Z-axis direction. The upper sheave 35a is provided on the upper part of the movable mast 30a on its -Y side and +Y side. The wire rope 5a is hung on the upper sheave 35a.

[0022] The movable mast 30b, which is an example of the second second frame, is columnar and provided on the -X side of the mast 20b. The movable mast 30b moves up and down in the Z-axis direction, and when it is at its lowest point, its upper end is lower than the upper end of the mast 20b. The movable mast 30b may be configured so that when it is at its lowest point, its upper end is at the same height as the upper end of the mast 20b. The movable mast 30b has an upper sheave 35b at the upper part of the side surface on the +Y side and the upper part of the side surface on the -Y side, and has a lower sheave 36b at the lower part of the side surface on the -Y side. The lower sheave 36b is a movable pulley and is supported by a support part 37b protruding from the side surface on the +Y side of the movable mast 30b. The lower sheave 36b, which is an example of the second mechanism, is hung with a wire rope 4b. The movable mast 30b has recesses 31b and 32b along the Z-axis direction on its -Y side and +Y side, recess 33b on its +X side, and recess 34b on its -X side. The recess 31b is a groove for receiving the guide roller 21b and is provided along the Z-axis direction. The recess 32b is a groove for receiving the guide roller 41b (described later) and is provided along the Z-axis direction. The recess 33b is a groove for receiving the guide roller 22b and is provided along the Z-axis direction. The recess 34b is a groove for receiving the guide roller 42b (described later) and is provided along the Z-axis direction. The upper sheave 35b is provided on the upper part of the movable mast 30b on its -Y side and +Y side. The wire rope 5b is hung on the upper sheave 35b.

[0023] As is clear from Figure 3, the positions of the upper sheave 23a and lower sheave 36a to which the wire rope 4a for raising and lowering the movable mast 30a relative to mast 20a is attached, and the positions of the upper sheave 23b and lower sheave 36b to which the wire rope 4b for raising and lowering the movable mast 30b relative to mast 20b is attached are configured to be point-symmetrical with respect to the center of the lifting body 40 when viewing the stacker crane 1 from above (+Z direction) so as to ensure weight balance when the movable masts 30a, 30b move up and down relative to the masts 20a, 20b.

[0024] The lifting body 40 carries items to be stored in the multi-story warehouse or items taken out from the multi-story warehouse. The lifting body 40 moves up and down in the Z-axis direction, and when it reaches its lowest position, its upper end is lower than the upper end of the mast 20a. The lifting body 40 may be configured so that when it reaches its lowest position, its upper end is at the same height as the upper ends of the movable masts 30a and 30b. The lifting body 40 includes guide rollers 41a, 41b, 42a, and 42b, fixed parts 43a and 43b, a transfer machine 44, and a bottom part 46. The bottom part 46 is provided with the transfer machine 44 on the +Z direction side. The transfer machine 44 has a double stroke mechanism, and the placement part 44a on which the items are placed expands and contracts in the Y-axis direction. The guide rollers 41a and 42a are rollers that guide the lifting body 40 in the vertical direction. The guide rollers 41a are supported by support parts 45a protruding in the -X direction from the side surface in the -X direction, and are arranged in pairs at a predetermined interval in the Z axis direction so that the rotation axis is along the Y axis direction. The guide rollers 41a limit the movement in the X axis direction of the lifting body 40, which moves in the up and down direction relative to the movable mast 30a. The guide rollers 42a are arranged at a predetermined interval in the Z axis direction so that the rotation axis is along the X axis direction. The guide rollers 42a limit the movement in the Y axis direction of the lifting body 40, which moves in the up and down direction relative to the movable mast 30a.

[0025] The guide rollers 41b and 42b are rollers that guide the lifting body 40 in the up-down direction. The guide roller 41b is supported by a support part 45b that protrudes in the +X direction from the side surface in the +X direction, and two guide rollers are provided as a set at a predetermined interval in the Z axis direction so that the rotation axis is along the Y axis direction. The guide rollers 41b limit the movement in the X axis direction of the lifting body 40 that moves in the up-down direction relative to the moving mast 30b. The guide rollers 42b are provided at a predetermined interval in the Z axis direction so that the rotation axis is along the X axis direction. The guide rollers 42b limit the movement in the Y axis direction of the lifting body 40 that moves in the up-down direction relative to the moving mast 30b. The fixed part 43a protrudes in the -X direction from the side surface in the -X direction at the lower part of the lifting body 40, and one end of the wire rope 5a is fixed to the fixed part 43b. The fixed part 43b protrudes in the +X direction from the side surface in the +X direction at the lower part of the lifting body 40, and one end of the wire rope 5b is fixed to the fixed part 43b.

[0026] One end of the wire rope 4a is fixed to the hoist drum 3a, and the other end is fixed to the upper part of the mast 20a. The wire rope 4a is used to raise and lower the movable mast 30a. The wire rope 4a is hung on the upper sheave 23a and the lower sheave 36a. When the wire rope 4a is wound by the hoist drum 3a, the lower sheave 36a, which is a movable pulley, is pulled up, and the movable mast 30a having the lower sheave 36a is raised. When the wire rope 4a is unwound by the hoist drum 3a, the lower sheave 36a is pulled down, and the movable mast 30a having the lower sheave 36a is lowered.

[0027] One end of the wire rope 4b is fixed to the hoist drum 3b, and the other end is fixed to the upper part of the mast 20b. The wire rope 4b is used to raise and lower the movable mast 30b. The wire rope 4b is hung on the upper sheave 23b and the lower sheave 36b. When the wire rope 4b is wound by the hoist drum 3b, the lower sheave 36b, which is a movable pulley, is pulled up, and the movable mast 30b having the lower sheave 36b is raised. When the wire rope 4b is unwound by the hoist drum 3b, the lower sheave 36b is pulled down, and the movable mast 30b having the lower sheave 36b is lowered.

[0028] One end of the wire rope 5a is fixed to the fixed part 43a, is hung on the upper sheave 35a, and the other end is fixed to the base part 20c. When the movable mast 30a rises, the fixed part 43a is pulled up by the wire rope 5a, and the lifting body 40 rises. When the movable mast 30a descends, the fixed part 43a is pulled down by the wire rope 5a, and the lifting body 40 descends.

[0029] One end of the wire rope 5b is fixed to the fixed part 43b, and the other end is hung on the upper sheave 35b and fixed to the base part 20c. When the movable mast 30b rises, the fixed part 43b is pulled up by the wire rope 5b, so that the lifting body 40 rises. When the movable mast 30b descends, the fixed part 43b suspended by the wire rope 5b descends, so that the lifting body 40 descends. Note that in the present invention, the wire ropes 5a, 5b may be replaced with chains, and the upper sheaves 35a, 35b may be replaced with sprockets.

[0030] Next, an example of the operation of the stacker crane 1 will be described. FIGS. 4 and 5 are schematic diagrams of buildings 100A and 100B in which the stacker crane 1 is installed. The building 100A is a building equipped with a multi-story warehouse 101A, and the building 100B is a building equipped with a multi-story warehouse 101B. The multi-story warehouse 101A and the multi-story warehouse 101B have a plurality of storage compartments 102 for storing items in the X-axis direction, and a plurality of tiers of the storage compartments 102 in the Z-axis direction. A beam 200, which is an example of a structure, is provided between the buildings 100A and 100B at a height lower than the upper ends of the multi-story warehouses 101A and 101B. Rails (not shown) are provided in the buildings 100A and 100B so that the stacker crane 1 can travel between both buildings.

[0031] For example, when an article W is to be taken out from the upper storage section 102 in the building 100A, the operator operates the operation panel of the cab 2 to raise the lifting body 40. When the operator operates to raise the lifting body 40, the hoist drum 3a winds the wire rope 4a, and the hoist drum 3b winds the wire rope 4b. When the wire ropes 4a and 4b are wound, the lower sheaves 36a and 36b are pulled up, and the movable masts 30a and 30b rise. When the movable masts 30a and 30b rise, the upper sheaves 35a and 35b rise, and the fixed parts 43a and 43b are pulled up by the wire ropes 5a and 5b, and the lifting body 40 rises as shown in FIG. 4. When the movable masts 30a and 30b and the lifting body 40 rise, their upper ends become higher than the upper ends of the masts 20a and 20b. As the lifting body 40 rises, it is possible to take out and store an article in the storage section 102, which is located at a high position. The operator operates the control panel to run the stacker crane 1 to the position of the storage section 102, and then operates the control panel to take in the article W stored in the storage section 102 into the lifting body 40 with the transfer machine 44. As the ceiling of the building 100A is located at a position higher than the beams 200, the lifting body 40 can be raised to a position higher than the height of the beams 200, and the article W can be taken out of the storage section 102.

[0032] Next, an example of the operation when the stacker crane 1 moves the article W taken out from the storage section 102 from the building 100A to the building 100B will be described. When the stacker crane 1 moves from the building 100A to the building 100B, the operator operates the operation panel of the cab 2 to lower the lifting body 40. When the operator operates to lower the lifting body 40, the hoisting drum 3a rewinds the wire rope 4a, and the hoisting drum 3b rewinds the wire rope 4b. When the wire ropes 4a and 4b are rewinded, the lower sheaves 36a and 36b are pulled down, and the movable masts 30a and 30b are lowered. When the movable masts 30a and 30b are lowered, the upper sheaves 35a and 35b are lowered, and the fixed parts 43a and 43b are pulled down by the wire ropes 5a and 5b, and the lifting body 40 is lowered as shown in FIG. 5. When the lifting body 40 is lowered, the upper end of the stacker crane 1 is lower than the lower end of the beam 200 as shown in Figure 5, so that the stacker crane 1 can move to the building 100B without colliding with the beam 200.

[0033] [Variations] Although the embodiment of the present invention has been described above, the present invention is not limited to the above-mentioned embodiment and can be implemented in various other forms. For example, the above-mentioned embodiment may be modified as follows to implement the present invention. The above-mentioned embodiment and the following modifications may be combined with each other. The present invention also includes a configuration in which the components of the above-mentioned embodiments and modifications are appropriately combined. Further effects and modifications can be easily derived by a person skilled in the art. Therefore, the broader aspects of the present invention are not limited to the above-mentioned embodiment and modifications, and various modifications are possible.

[0034] In the above-mentioned embodiment, the lifting body 40 is lifted by the upper sheaves 23a and 23b, the lower sheaves 36a and 36b, and the upper sheaves 35a and 35b. However, the method of lifting the lifting body 40 is not limited to the method of the embodiment, and may be another method. FIG. 6 is a schematic diagram of the main part of a modified example for lifting the lifting body 40A. The cylinders 50A, 50B, 51A, and 51B shown in FIG. 6 are, for example, hydraulic cylinders. The cylinders 50A and 50B are provided on the base 20C. The rod of the cylinder 50A is provided with a lifting part 52A, and the rod of the cylinder 50B is provided with a lifting part 52B. The lower part of the lifting part 52A is provided with a cylinder 51A, and the lower part of the lifting part 52B is provided with a cylinder 51B. The lifting body 40A is fixed to the tip of the rod of the cylinder 51A and the rod of the cylinder 51B. When the lifting body 40A is raised, the rods of the cylinders 50A and 50B are extended and the rods of the cylinders 51A and 51B are also extended. This causes the lifting parts 52A and 52B and the cylinders 51A and 51B to rise, and the cylinders 51A and 51B further raise the lifting body 40A, so that the lifting stroke of the lifting body 40A can be increased. In this modification, the cylinder tubes of the cylinders 50A and 50B correspond to fixed masts, and the lifting parts 52A and 52B correspond to movable masts. In this modification, the set of cylinders 50A and 50B and the set of cylinders 51A and 51B can be extended and retracted separately, so that only the set of cylinders 51A and 51B can be driven to raise and lower only the lifting body 40A, or only the set of cylinders 50A and 50B can be driven to raise and lower only the lifting parts 52A and 52B.

[0035] In the present invention, the amount of lift of the lifting body 40 is not limited to that in the embodiment, and the lifting body 40 may be raised and lowered with a longer stroke than in the embodiment by using a combination of a fixed pulley and a movable pulley, or a combination of a cylinder and multiple of the above-mentioned lifting parts.

[0036] In the present invention, the lifting body 40 and the movable masts 30a and 30b should be designed not to collide with the lowest part of the building structure above the rails when they are at their lowest point. In this case, for example, the upper ends of the lifting body 40 and the movable masts 30a and 30b may be higher than the upper ends of the masts 20a and 20b when they are at their lowest point.

[0037] In the above-described embodiment, the operator operates the control panel of the cab 2 to cause the stacker crane 1 to travel, the movable masts 30a, 30b to rise and fall, the lifting body 40 to rise and fall, and the transfer machine 44 to store and remove goods; however, the stacker crane 1 may also be driven automatically by a control device connected to the stacker crane 1 wirelessly or by wire, which controls the stacker crane 1 to perform the travel, the movable masts 30a, 30b to rise and fall, the lifting body 40 to rise and fall, and the transfer machine 44 to store and remove goods. [Explanation of symbols]

[0038] 1 Stacker crane 2. Cab 3 Hoisting device 10a, 10b frames 20 Fixed mast 23a, 23b, 35a, 35b Upper sheave 24a, 24b, 36a, 36b Lower sheave 30a, 30b Mobile mast 40 Lifting body

Claims

1. An article transport device that travels on rails installed on the floor and transports articles within a warehouse, a first frame having a predetermined height; a second frame that is movable up and down within a predetermined range relative to the first frame; a lifting body that can be raised and lowered within a predetermined range relative to the second frame and on which the article is placed; Equipped with The lifting body rises with the rise of the second frame, so that the lifting body can be raised to a position higher than the height of the first frame. Goods handling equipment.

2. the first frame has a plurality of first rollers that limit the movement of the second frame in a horizontal direction; The first rollers are spaced apart from one another in a direction in which the second frame moves up and down.

2. The article handling device of claim 1.

3. the lifting body has a plurality of second rollers that limit horizontal movement of the lifting body, The second rollers are spaced apart from one another in the direction in which the lifting body moves up and down.

3. An article transport device according to claim 1 or 2.

4. the second frame has a first second frame and a second second frame sandwiching the lift body in a horizontal direction, a first mechanism for raising and lowering the first second frame by a wire rope, and a second mechanism for raising and lowering the second second frame by a wire rope, The first mechanism and the second mechanism are disposed at positions symmetrical with respect to the center of the lift body when viewed from above.

2. The article handling device of claim 1.

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