Item storage facilities

Abstract

To realize an article storage facility capable of appropriately arranging a working scaffold by utilizing an existing configuration of the article storage facility.SOLUTION: According to an article storage facility comprising a pair of rails, and a conveying vehicle, and further comprising a plurality of scaffold members 2 attachable / detachable to the pair of rails, the pair of rails each comprise a first face 11, and a second face 12. The first face 11 extends along a first direction on a face directed upward and forms a travel face on which wheels of the conveying vehicle are rolled. The second face 12 extends along the first direction on a face directed upward and is arranged on an upper side than the first face 11. The scaffold members 2 in an attachment state where the scaffold members 2 are attached to the pair of rails are arranged between the pair of second faces 12 in a second direction Y, and are placed on the pair of first faces 11. In the attachment state, all the scaffold members 2 are arranged on a lower side than the second face 12.SELECTED DRAWING: Figure 9

Description

[Technical field]

[0001] The present invention relates to an article storage facility including a pair of rails arranged along a first direction, and a transport vehicle that travels along the pair of rails to transport articles. [Background technology]

[0002] An example of such an article storage facility is disclosed in International Publication No. WO 2018 / 155076 (Patent Document 1). In the following description of the background art, the reference characters or names in parentheses refer to those in Patent Document 1.

[0003] The article storage facility described in Patent Document 1 includes a storage shelf (2), a stacker crane (transport device 1) that travels in front of the storage shelf (2), a door (3) for entering and exiting the travel area of ​​the stacker crane (transport device 1), a plurality of pairs of rails (4) that are arranged along the travel area of ​​the stacker crane (transport device 1), and a storage section (6) that accommodates a plurality of scaffolding members (5). A plurality of pairs of rails (4) are provided in line in the vertical direction. The scaffolding members (5) include wheels (5b) that roll on the rails (4) and are capable of moving along the pair of rails (4). [Prior art documents] [Patent documents]

[0004] [Patent Document 1] International Publication No. 2018 / 155076 Summary of the Invention [Problem to be solved by the invention]

[0005] In the above-mentioned article storage facility, a plurality of scaffolding members (5) can be moved from the storage section (6) along the pair of rails (4) and arranged in a line along the pair of rails (4). A worker can work on the shelf section located above the storage shelf (2) by standing on the scaffolding members (5). However, in the above-mentioned article storage facility, a pair of rails (4) for moving and supporting the scaffolding members (5) needs to be provided on the storage shelf (2) along the travel area of ​​the stacker crane (transport device 1). Therefore, there are problems such as a reduction in the capacity of the storage shelf (2) by the installation space of such rails (4) and an increase in the cost of the article storage facility by the installation cost of the rails (4).

[0006] Therefore, it is desirable to realize an item storage facility that can appropriately install work scaffolding by utilizing the existing configuration of the item storage facility. [Means for solving the problem]

[0007] In view of the above In one embodiment, the item storage facility includes: an article storage facility including a pair of rails arranged along a first direction and a transport vehicle that travels along the pair of rails to transport articles, the facility further including a plurality of scaffolding members that are detachable from the pair of rails, the second direction being a direction perpendicular to the first direction in a vertical view along the vertical direction, each of the pair of rails having a first surface and a second surface, the first surface being an upward surface that extends along the first direction and forms a running surface on which wheels of the transport vehicle roll, the second surface being an upward surface that extends along the first direction and is arranged above the first surface, the pair of first surfaces being arranged inside the pair of second surfaces in the second direction, the scaffolding members being arranged between the pair of second surfaces in the second direction in an attached state in which the scaffolding members are attached to the pair of rails and being placed on the pair of first surfaces, the entire scaffolding members being arranged below the second surfaces in the attached state, The scaffolding member includes a main body portion disposed between the pair of second surfaces in the second direction and placed on the pair of first surfaces, and a dimension of the main body portion in the second direction is larger than a dimension between the pair of first surfaces and smaller than a dimension between the pair of second surfaces. .

[0008] According to this configuration, the scaffolding members can be set up using existing rails provided for the transport vehicle to travel on. At that time, the scaffolding members are disposed between the pair of second surfaces in the second direction and placed on the pair of first surfaces, so that the scaffolding members can be appropriately set up while being positioned in the second direction by the rails. In addition, since the entire scaffolding member in the attached state is positioned below the second surface, the portion of the rail connecting the first surface and the second surface is positioned to rise up on both outer sides of the scaffolding member in the second direction. This makes it easier for workers to recognize the outer edge of the scaffolding, and increases the safety of workers working on the scaffolding member. In this manner, according to this configuration, a work scaffold can be appropriately set up by utilizing the existing configuration of the item storage facility.

[0009] Further, in one aspect, an item storage facility in consideration of the above is an item storage facility including a pair of rails arranged along a first direction and a transport vehicle that travels along the pair of rails to transport items, and further including a plurality of scaffolding members that are detachable from the pair of rails, and a direction perpendicular to the first direction in a vertical view is defined as a second direction, each of the pair of rails has a first surface and a second surface, the first surface is an upward surface that extends along the first direction and forms a running surface on which wheels of the transport vehicle roll, the second surface is an upward surface that extends along the first direction and is disposed above the first surface, the pair of first surfaces are disposed inside the pair of second surfaces in the second direction, and the scaffolding members are disposed between the pair of second surfaces in the second direction and placed on the pair of first surfaces when the scaffolding members are attached to the pair of rails, In the attached state, the entire scaffolding member is positioned below the second surface, and in addition to a main body part that is positioned between the pair of second surfaces in the second direction and placed on the pair of first surfaces, the scaffolding member comprises a pair of locking parts that protrude downward from the main body part, and the pair of locking parts are locked to each of the pair of rails from below, and the locking parts are configured to restrict the main body part from moving upward when locked to each of the pair of rails, and at least one of the pair of locking parts is a movable locking part that is configured to be able to change its position between a locking position in which it is locked to the pair of rails and a release position in which it is released from the locking position with respect to the pair of rails, when the scaffolding member is attached, and the movable locking part is biased in the direction of the locking position, and is provided with an operating part that accepts an operation to change the position from the locking position to the release position.

[0010] Further, in one aspect, an item storage facility in consideration of the above is an item storage facility including a pair of rails arranged along a first direction, and a transport vehicle that travels along the pair of rails to transport items, and further including a plurality of scaffolding members that are detachable from the pair of rails, and a direction perpendicular to the first direction in a vertical view is defined as a second direction, each of the pair of rails has a first surface and a second surface, the first surface is an upward surface that extends along the first direction and forms a running surface on which wheels of the transport vehicle roll, the second surface is an upward surface that extends along the first direction and is disposed above the first surface, the pair of first surfaces are disposed inside the pair of second surfaces in the second direction, and the scaffolding members are disposed between the pair of second surfaces in the second direction when the scaffolding members are attached to the pair of rails, and are disposed in front of the pair of front surfaces of the pair of rails. The scaffolding member is placed on the first surface, and in the attached state, the entire scaffolding member is positioned below the second surface, and in addition to a main body part that is positioned between the pair of second surfaces in the second direction and placed on the pair of first surfaces, the scaffolding member comprises a pair of locking parts that protrude downward from the main body part, and the pair of locking parts are locked to each of the pair of rails from below, and the locking parts are configured to restrict the main body part from moving upward when locked to each of the pair of rails, and the multiple locking parts are attached separately to a front surface of the main body part facing one side in the first direction and a rear surface facing the other side in the first direction, and each of the multiple locking parts is attached to the main body part in an inclined position so as to face away from the main body part in the first direction as it moves downward from the main body part.

[0011] Further, in one aspect, an item storage facility in consideration of the above is an item storage facility including a pair of rails arranged along a first direction, and a transport vehicle that travels along the pair of rails to transport items, and further including a plurality of scaffolding members that are detachable from the pair of rails, and a direction perpendicular to the first direction in a vertical view is defined as a second direction, each of the pair of rails has a first surface and a second surface, the first surface is an upward surface that extends along the first direction and forms a running surface on which wheels of the transport vehicle roll, the second surface is an upward surface that extends along the first direction and is disposed above the first surface, the pair of first surfaces are disposed inside the pair of second surfaces in the second direction, and the scaffolding members are disposed between the pair of second surfaces in the second direction when the scaffolding members are attached to the pair of rails. and is placed on the pair of first surfaces, and in the attached state, the entire scaffolding member is positioned below the second surface, and the scaffolding member has, in addition to a main body part that is arranged between the pair of second surfaces in the second direction and placed on the pair of first surfaces, a connecting part for connecting to another scaffolding member adjacent in the first direction, the main body part has a front surface facing one side in the first direction and a rear surface facing the other side in the first direction, the scaffolding members are attached to the pair of rails in order from the front side in the first direction so that the front surface faces the rear side in the first direction, and the connecting part comprises a first connector provided on the front surface and a second connector provided on the rear surface and detachably connected to the first connector, and the second connector is configured to be connected to the first connector by engaging with the first connector from above.

[0012] Further, in one aspect, an item storage facility in consideration of the above is an item storage facility including a pair of rails arranged along a first direction and a transport vehicle that travels along the pair of rails to transport items, and further including a plurality of scaffolding members that are detachable from the pair of rails, and a direction perpendicular to the first direction in a vertical view is a second direction, each of the pair of rails has a first surface and a second surface, the first surface is an upward surface that extends along the first direction and forms a running surface on which wheels of the transport vehicle roll, and the second surface is an upward surface that extends along the first direction and is arranged above the first surface, and the pair of first surfaces are a pair of The scaffolding member is arranged on the inside of the second direction from the second surface, and in an attached state in which the scaffolding member is attached to the pair of rails, the scaffolding member is arranged between the pair of second surfaces in the second direction and placed on the pair of first surfaces, and in the attached state, the entire scaffolding member is arranged below the second surfaces, and further includes a work cart for transporting the plurality of scaffolding members, the work cart is configured to run along the first direction by the wheels of the work cart rolling on the second surface, and an inner lower end, which is a lower end of the part of the work cart that is arranged on the inside of the pair of second surfaces in the second direction, is arranged above the scaffolding member in the attached state.

[0013] Further features and advantages of the article storage facility will become apparent from the following description of exemplary, non-limiting embodiments which are illustrated with reference to the drawings. [Brief description of the drawings]

[0014] [Figure 1] Perspective view of the item storage facility [Diagram 2] Plan of the item storage facility [Diagram 3] Side view of the item storage facility [Figure 4] A partially enlarged view showing the positional relationship between a pair of rails, a transport vehicle, and an article. [Diagram 5] Perspective view of a transport vehicle [Figure 6] Perspective view of a work trolley [Figure 7]A perspective view of a scaffolding member [Figure 8] A perspective view of a scaffolding member [Figure 9] FIG. 2 is a rear view showing the positional relationship between the pair of rails, the scaffolding member, and the work cart; [Figure 10] Side view of scaffolding member [Figure 11] A schematic enlarged view of the connections between scaffolding components [Figure 12] FIG. 1 is a perspective view showing the installation of scaffolding members; [Figure 13] FIG. 1 is a perspective view showing the installation of scaffolding members; [Figure 14] A schematic side view of how scaffolding components are stacked DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS

[0015] 1.Item storage facilities An embodiment of an article storage facility will be described with reference to the drawings. As shown in Fig. 1, the article storage facility 1 includes a pair of first rails L1 arranged along a first direction X, and a first transport vehicle 30 that travels along the pair of first rails L1 to transport an article W. In this embodiment, the article storage facility 1 includes multiple pairs of first rails L1 and multiple first transport vehicles 30. In this example, the article storage facility 1 stores the article W in a state in which the article W is placed on a pallet P.

[0016] In the following, each component of the article storage facility 1 will be specifically described, and as shown in Fig. 1 and Fig. 2, a direction perpendicular to the first direction X when viewed in the up-down direction along the up-down direction Z will be described as the second direction Y. Also, a direction along the first rail L1 will be described as the first direction X, one side of the first direction X (the side moving away from the second rail L2 along the first rail L1) will be described as the first direction first side X1, and the other side of the first direction X (the side moving closer to the second rail L2 along the first rail L1) will be described as the first direction second side X2. Also, one side of the second direction Y will be described as the second direction first side Y1, and the other side of the second direction Y will be described as the second direction second side Y2.

[0017] In this example, as shown in FIG. 1, FIG. 2, and FIG. 3, the article storage facility 1 includes a plurality of pillar members 33, a plurality of connecting members 36, and a plurality of beam members 37. The plurality of pillar members 33 are arranged along the vertical direction Z. The plurality of pillar members 33 are arranged along the first direction X and the second direction Y so as to be spaced apart from one another. The plurality of connecting members 36 are arranged at multiple locations in the vertical direction Z. The plurality of connecting members 36 are arranged in a posture along the first direction X, and connect the plurality of pillar members 33 adjacent to each other in the first direction X. The plurality of beam members 37 are arranged at multiple locations in the vertical direction Z. The plurality of beam members 37 are arranged in a posture along the second direction Y, and are arranged along the first direction X so as to be spaced apart from one another. The beam members 37 are fixed to the plurality of pillar members 33 arranged along the second direction Y. In other words, the beam members 37 connect these pillar members 33 to each other in the second direction Y. In the illustrated example, the item storage facility 1 further includes a plurality of reinforcing members 38. The reinforcing members 38 are braces that are arranged at an angle with respect to the first direction X and connect adjacent pillar members 33.

[0018] In this example, as shown in Figs. 1, 2, and 3, a pair of first rails L1 are arranged in a plurality of sets along the first direction X. Specifically, the plurality of sets of first rails L1 are arranged in the vertical direction Z and are arranged separately in the second direction Y. In the illustrated example, the pair of first rails L1 are arranged in a plurality of stages (three stages in this example). The pair of first rails L1 are arranged in a plurality of rows in the second direction Y. Each of the plurality of first rails L1 is supported by a plurality of pillar members 33 arranged in the first direction X and a plurality of beam members 37 arranged in the second direction Y. In this embodiment, the first rail L1 corresponds to the "rail 10". The specific configuration of the first rail L1 will be described later.

[0019] Furthermore, in this example, the article storage facility 1 includes a pair of second rails L2 and a walkway 39. The pair of second rails L2 are traveled by a second transport vehicle 35 and a work parent cart 66, which will be described later. The second rails L2 are arranged adjacent to the area in which the first rails L1 are arranged on the second side X2 in the first direction. The pair of second rails L2 are arranged along the second direction Y. The pair of second rails L2 are arranged in a plurality of sets in the vertical direction Z. Specifically, each of the plurality of sets of second rails L2 is arranged at a position in the vertical direction Z corresponding to each of the plurality of stages of first rails L1 arranged in the vertical direction Z. That is, the pair of second rails L2 are arranged in the same number of stages as the pair of first rails L1 (three stages in this case). In the illustrated example, the pair of second rails L2 is installed below the pair of first rails L1 in the same stage by a certain distance. In addition, the difference in height between the corresponding first rail L1 and second rail L2 of the same stage corresponds to the difference in height between the first wheel 31 of the first transporting vehicle 30 placed on the second transporting vehicle 35 and the height of the second wheel 83 of the second transporting vehicle 35.

[0020] The walkway 39 is configured so that the worker 7 (see FIG. 12) can walk on it. The walkway 39 is installed between the pair of second rails L2 so that the worker 7 can walk on it. For this reason, the walkway 39 is installed between the pair of second rails L2 along the pair of second rails L2. In this example, the distance between the pair of second rails L2 adjacent in the vertical direction Z is equal to or greater than the distance at which the worker 7 can walk on it. For this reason, the walkway 39 is installed in correspondence with the pair of second rails L2 on each level (see FIG. 3). In the example shown in the figure, the walkway 39 is installed on each level except the lowest level.

[0021] 2. Rails Next, the configuration of the pair of first rails L1 will be described. The pair of first rails L1 serves to accommodate the article W while allowing the first transport vehicle 30 to travel thereon. As shown in Figs. 4 and 5, each of the pair of first rails L1 has a first surface 11 and a second surface 12. In this example, each of the multiple first rails L1 has the first surface 11 and the second surface 12. The first surface 11 and the second surface 12 of one first rail L1 are disposed adjacent to each other in the second direction Y.

[0022] 2-1.First page As shown in FIG. 4 and FIG. 5, the first surface 11 is a surface facing upward and extends along the first direction X, forming a running surface 14 on which the first wheels 31 of the first transport vehicle 30 roll. The pair of first surfaces 11 are disposed inside the pair of second surfaces 12 in the second direction Y. In this embodiment, each of the pair of first surfaces 11 is further formed so as to extend along a horizontal surface. Since the first surfaces 11 form the running surface 14, the pair of first wheels 31 are supported from below by the pair of first surfaces 11. As a result, the first transport vehicle 30 travels on the pair of first surfaces 11. In this example, the entire first transport vehicle 30 is configured to be disposed inside the pair of second surfaces 12 in the second direction Y.

[0023] 2-2.Second side As shown in Figs. 4 and 5, the second surface 12 is an upward facing surface extending along the first direction X and is disposed above the first surface 11. In this embodiment, each of the pair of second surfaces 12 is further formed so as to be aligned along a horizontal surface. In this embodiment, the second surface 12 is an article placement surface 62 on which the article W to be stored is placed. That is, the article W to be stored is transported by the first transport vehicle 30 along the pair of first rails L1 and placed on the pair of second surfaces 12, thereby being stored in the article storage facility 1. In the illustrated example, the article W placed on the pallet P is placed on the pair of first rails L1. That is, the pair of second surfaces 12 support the article W via the pallet P.

[0024] 2-3.Third side In this embodiment, as shown in FIG. 4 and FIG. 5, each of the pair of first rails L1 further includes a third surface 13 that faces inward in the second direction Y and extends along the first direction X. The third surface 13 is disposed between the first surface 11 and the second surface 12 in the up-down direction Z. In this example, the first rail L1 includes a first wall portion 71 that forms the first surface 11, a second wall portion 72 that forms the second surface 12, and a third wall portion 73 that forms the third surface 13. The first wall portion 71, the second wall portion 72, and the third wall portion 73 are each formed in a plate shape extending in the first direction X. The first wall portion 71 is disposed on the inside of the second wall portion 72 in the second direction Y. Furthermore, the first wall portion 71 is disposed below the second wall portion 72. The third wall portion 73 connects the first wall portion 71 and the second wall portion 72. The first surface 11 is a surface facing the upper side of the first wall portion 71. The second surface 12 is a surface facing the upper side of the second wall portion 72. The third surface 13 is a surface facing the inside of the third wall portion 73 in the second direction Y. In this example, the first rail L1 further includes a first extending portion 74 and a second extending portion 75. The first extending portion 74 and the second extending portion 75 are each formed in a plate shape extending in the first direction X. In the illustrated example, the first wall portion 71, the second wall portion 72, the third wall portion 73, the first extending portion 74, and the second extending portion 75 are integrally formed by bending a strip-shaped member. Specifically, the first wall portion 71 is disposed along a horizontal plane. The third wall portion 73 is formed by bending upward from the outer side end of the first wall portion 71 in the second direction Y. The second wall portion 72 is bent from the upper end portion of the third wall portion 73 toward the outside in the second direction Y and is formed so as to follow a horizontal plane. Furthermore, a first extension portion 74 is bent downward from the inner end portion of the first wall portion 71 in the second direction Y. Moreover, a second extension portion 75 is bent downward from the outer side end portion of the second wall portion 72 in the second direction Y. In this manner, the first rail L1 is formed in a stepped shape.

[0025] In this embodiment, the first rail L1 is supported by the pillar member 33 and the beam member 37 via the fixing member 19 (see FIG. 4). The fixing member 19 is fastened and fixed to each of the pillar member 33 and the beam member 37 by the first fastening member 21. In this example, the fixing member 19 is disposed at each of the points where the pillar member 33 and the beam member 37 intersect as viewed in the first direction X. The fixing member 19 is a plate-shaped member. The fixing member 19 is fixed in a posture along the vertical direction Z and the second direction Y. Both side portions of the fixing member 19 in the second direction Y are formed in a stepped shape according to the shape of the first rail L1. The fixing member 19 supports the first rail L1 at both side portions in the second direction Y (see FIGS. 1 and 4).

[0026] 3.Transport vehicle The first transport vehicle 30 transports the article W into the pair of first rails L1 to store it, and transports the article W stored in the pair of first rails L1 to the outside from the pair of first rails L1. In this embodiment, the first transport vehicle 30 travels along the pair of first rails L1 in a lifted state and places the article W on the pair of first rails L1 to store the article W. The first transport vehicle 30 also lifts the article W placed on the pair of first rails L1, travels along the pair of first rails L1, and transports the article W from above the pair of first rails L1 to the outside. In this embodiment, as shown in FIG. 4 and FIG. 5, the first transport vehicle 30 includes a first support surface 32 that supports the lower surface of the article W to be transported, and a lifting device 70 that raises and lowers the first support surface 32. In this example, a plurality of first transport vehicles 30 are configured to be able to travel on a pair of first rails L1 arranged at different locations at the same time. In this embodiment, the first transport vehicle 30 corresponds to the “transport vehicle.” The configuration of the first transport vehicle 30 will be specifically described below.

[0027] As shown in FIG. 4, in this embodiment, the first transport vehicle 30 includes a first transport body 29, a lifting device 70, a first support 27, a first wheel 31, and a first guide wheel 28. The first support 27 is disposed above the first transport body 29. A plurality of first wheels 31 are provided to roll on a pair of first surfaces 11 so as to protrude downward from the first transport body 29. Furthermore, a plurality of first guide wheels 28 are provided to roll on a pair of third surfaces 13 so as to protrude outward in the second direction Y from the first transport body 29. The lifting device 70 is provided to lift the first support 27 relative to the first transport body 29. The surface of the first support 27 facing upward is a first support surface 32 that supports the article W. In the illustrated example, the first support surface 32 supports the article W from below via a pallet P. The first transport vehicle 30 travels in the first direction X by the first wheel 31 rolling on the first surface 11 as the running surface 14. The first guide wheel 28 rolls on the third surface 13 to guide the first transport vehicle 30 in the first direction X. In other words, the third surface 13 restricts the movement of the first transport vehicle 30 in the second direction Y. The first wheel 31 corresponds to the "wheel of the transport vehicle", and the first support surface 32 corresponds to the "support surface".

[0028] In this embodiment, as shown in FIG. 4, the lifting device 70 is configured to raise and lower the first support surface 32 between a lowered position 9 at which the first support surface 32 is located below the second surface 12 and an uppered position 8 at which the first support surface 32 is located above the second surface 12. When the first support surface 32 is in the lowered position 9, the entire first transport vehicle 30 is located below the second surface 12. As a result, the first transport vehicle 30 can travel under the article W even when the article W is placed on the pair of second surfaces 12. Furthermore, when the first support surface 32 is raised to the uppered position 8, the article W placed on the pair of second surfaces 12 can be lifted. When the first support surface 32 is in the uppered position 8, the first transport vehicle 30 travels on the pair of first rails L1 toward the second side X2 in the first direction. As a result, the first transport vehicle 30 can transport the article W along the pair of first rails L1 to the side of the pair of second rails L2.

[0029] In this example, as shown in FIG. 1 and FIG. 5, the article storage facility 1 further includes a second transport vehicle 35 that runs with the first transport vehicle 30 placed thereon. The second transport vehicle 35 travels along a pair of second rails L2 to transport the first transport vehicle 30. In this example, a plurality of second transport vehicles 35 are configured to simultaneously run on a pair of second rails L2 arranged at different heights. In the illustrated example, a plurality of (three in this example) second transport vehicles 35 each carry a first transport vehicle 30 carrying an article W thereon, and run on a plurality of (three in this example) second rails L2. Then, when the second transport vehicle 35 is stopped at a position corresponding to any one of the first rails L1, the first transport vehicle 30 can transfer from the second transport vehicle 35 to the first rail L1. In the illustrated example, a plurality of (three here) second transport vehicles 35 travel on a plurality of (three here) second rails L2 without carrying a first transport vehicle 30. Then, when the second transport vehicles 35 are stopped at a position corresponding to any one of the first rails L1, the first transport vehicles 30 can transfer from the first rails L1 to the second transport vehicles 35.

[0030] In this example, the second transport vehicle 35 includes a second support portion 81, a second transport body portion 84, a second wheel 83 that rolls on the second rail L2, and a conveyor T1 that supports the article W and sends the article in the first direction X. A second support surface 82 on which the first transport vehicle 30 is placed is formed on the upper surface of the second support portion 81. A plurality of second wheels 83 are provided so as to protrude downward from the second transport body portion 84. The second transport vehicle 35 travels in the second direction Y as the plurality of second wheels 83 roll on the second rail L2. The conveyor T1 is disposed on both sides of the second support portion 81 in the second direction Y when viewed in the up-down direction, and is configured to support the article W on its upper surface. The upper surface of the conveyor T1 is disposed above the second support surface 82. Furthermore, in this example, the upper surface of the conveyor T1 is disposed above the first support surface 32 at the lowered position 9 of the first conveyor 30 placed on the second support surface 82, and below the first support surface 32 at the raised position 8 of the first conveyor 30. This allows the transfer of the article W between the conveyor T1 and the first conveyor 30 while the first conveyor 30 is supported on the second support surface 82. That is, in this example, while the first support surface 32 of the first conveyor 30 is located at the lowered position 9, the entire first conveyor 30 is configured to be disposed below the conveyor T1. Then, by moving the first support surface 32 to the raised position 8, the article W supported by the pair of conveyors T1 can be transferred to the first support surface 32. In the example of FIG. 13, a pallet P is placed on the pair of conveyors T1. Then, scaffolding members 2, which will be described later, are placed on the pallet P in a stacked state. In this manner, the second transport vehicle 35 can also transport cargo such as the scaffolding member 2 and the pallet P without supporting the first transport vehicle 30.

[0031] 4. Work trolley In this embodiment, as shown in FIG. 6 and FIG. 9, the article storage facility 1 further includes a work cart 6 that transports a plurality of scaffolding members 2. The work cart 6 runs along a pair of first rails L1. Specifically, the work cart 6 is configured to run along the first direction X by the third wheels 56 of the work cart 6 rolling on the second surface 12. In this embodiment, the work cart 6 includes a third support part 16 that supports a plurality of scaffolding members 2, the third wheels 56, and a first operation part 64. In this example, the work cart 6 also includes a brake mechanism (not shown). The third support part 16 supports the plurality of scaffolding members 2 from below. To this end, the third support part 16 includes a flat third support surface 16A facing upward. A plurality of third wheels 56 are provided on each of the surfaces of the third support part 16 facing the second direction Y. The third wheels 56 roll on the first rail L1, causing the work cart 6 to travel in the first direction X. The first operating parts 64 are provided on each of the surfaces of the third support parts 16 facing the first direction X so as to protrude upward from the third support parts 16 (see FIG. 6). The worker 7 (see FIG. 12) grips the first operating parts 64 and applies a force in the first direction X to move the work cart 6. The worker 7 can also operate a brake mechanism provided on the third support parts 16 to restrict the work cart 6 from moving at any position on the first rail L1. For example, it is preferable that the brake mechanism is configured to automatically restrict the movement of the work cart 6 when the worker 7 is not operating it, and to allow the work cart 6 to move only when the worker 7 is operating it. The third wheels 56 correspond to the "wheels of the work cart."

[0032] In this embodiment, as shown in FIG. 9, the work cart 6 further includes a second guide wheel 58 that rolls on the third surface 13. Here, the second guide wheel 58 is disposed above the scaffolding member 2 in the mounted state. The scaffolding member 2 will be described in detail later. The second guide wheel 58 corresponds to the "guide wheel" of the work cart 6. In this example, the second guide wheel 58 is disposed so as to protrude downward from the surface facing the downward side of the third support portion 16. Although not shown in the figure, the work cart 6 includes a plurality of second guide wheels 58 on each of the second direction first side Y1 and the second direction second side Y2 with respect to the center in the second direction Y so that a plurality of second guide wheels 58 contact the third surface 13 of each of the pair of first rails L1. That is, when the work cart 6 is supported by the pair of first rails L1, the plurality of second guide wheels 58 are disposed at positions where they contact the third surface 13. A shaft 59 is inserted into the center of the second guide wheel 58 so that the second guide wheel 58 can rotate around an axis along the vertical direction Z. The shaft 59 is supported by the third support part 16 and includes a fall prevention part (not shown) that prevents the second guide wheel 58 from falling. As shown in FIG. 9 , the scaffolding member 2 in an attached state, which will be described later, is placed on the pair of first surfaces 11. In this state, the second guide wheel 58 is disposed above the upper end of the scaffolding member 2.

[0033] Furthermore, in this embodiment, as shown in FIG. 9, the inner lower end 52, which is the lower end of the part of the work cart 6 that is located on the inside of the pair of second surfaces 12 in the second direction Y, is located above the scaffolding member 2 in the attached state. In this example, the inner lower end 52 is the lower end of the shaft 59. In the illustrated example, the lower end of the shaft 59 is located below the lower end of the second guide wheel 58. And, the lower end of this shaft 59 is located above the upper end of the scaffolding member 2 in the attached state. As a result, even when the scaffolding member 2 is attached to the pair of first rails L1, the work cart 6 does not interfere with the scaffolding member 2. Therefore, the worker 7 can move the work cart 6 to any position on the pair of first rails L1 with the scaffolding member 2 attached.

[0034] In this embodiment, the article storage facility 1 further includes a work parent cart 66 that runs while supporting the work cart 6 from below. The work parent cart 66 runs along a pair of second rails L2 to transport the work cart 6. In this example, a plurality of work parent carts 66 are configured to run on a pair of second rails L2 arranged at different heights at the same time. In the illustrated example, the work parent cart 66 includes a fourth support portion 67, a fourth wheel 69, a third rail L3, and a second operating portion 68. A plurality of fourth wheels 69 are provided on each surface of the fourth support portion 67 facing the first direction X. Then, the fourth wheel 69 rolls on the second rail L2, so that the work parent cart 66 runs in the second direction Y. The second operating portion 68 is provided on each surface of the fourth support portion 67 facing the second direction Y so as to protrude above the fourth support portion 67 (see FIG. 6 and FIG. 12). The worker 7 (see FIG. 12) moves the work parent cart 66 by holding the second operating part 68 and applying a force in the second direction Y while walking along the walkway 39. A pair of third rails L3 are provided on the fourth support part 67. The pair of third rails L3 are arranged along the first direction X with the work parent cart 66 placed on the pair of second rails L2. With the work parent cart 6 placed on the pair of third rails L3, the work parent cart 66 transports the work parent cart 6. The work parent cart 6 can travel along the third rail L3. Therefore, the worker 7 can move the work parent cart 6 from the third rail L3 to the first rail L1 with the work parent cart 66 stopped at a position corresponding to any first rail L1.

[0035] 5.Scaffolding materials As shown in Figs. 7, 8, and 9, the item storage facility 1 includes a plurality of scaffolding members 2 that are detachable from a pair of first rails L1. By attaching the plurality of scaffolding members 2 to the pair of first rails L1, a worker 7 can stand on the plurality of scaffolding members 2 to perform work. In this embodiment, as shown in Fig. 12, the plurality of scaffolding members 2 are installed so as to be aligned along the first direction X. In this example, the plurality of scaffolding members 2 can be attached to any of the plurality of sets of first rails L1 aligned in the vertical direction Z and the second direction Y.

[0036] 5-1.Main body In a mounted state in which the scaffolding member 2 is mounted on a pair of first rails L1, the scaffolding member 2 is disposed between a pair of second surfaces 12 in the second direction Y and placed on a pair of first surfaces 11. In the mounted state, the entire scaffolding member 2 is disposed below the second surfaces 12. In this embodiment, as shown in FIG. 9, the scaffolding member 2 includes a main body portion 3 that is disposed between a pair of second surfaces 12 in the second direction Y and placed on the pair of first surfaces 11. In this example, the dimension of the main body portion 3 in the second direction Y is larger than the dimension between the pair of first surfaces 11. In addition, the main body portion 3 is smaller than the dimension between the pair of second surfaces 12. In other words, the dimension of the scaffolding member 2 in the second direction Y is a dimension that fits between a pair of third surfaces 13 facing the second direction Y. The dimension of the main body portion 3 in the up-down direction Z is smaller than the dimension between the first surface 11 and the second surface 12. In other words, the dimension of the scaffolding member 2 in the vertical direction Z is smaller than the dimension of the third surface 13 in the vertical direction Z. With this configuration, when the scaffolding member 2 is attached to a pair of first rails L1, the entire scaffolding member 2 is disposed below the second surface 12. As shown in Figs. 7 and 8, in this example, the main body 3 is formed in a rectangular parallelepiped shape. Also, the dimension of the main body 3 in the second direction Y is larger than the dimension in the first direction X. Therefore, the scaffolding member 2 is attached to a pair of first rails L1 with the longitudinal direction of the main body 3 aligned along the second direction Y.

[0037] As shown in Figs. 7 and 8, the main body 3 has a front surface 23 facing one side of the first direction X and a rear surface 25 facing the other side of the first direction X. In this embodiment, the front surface 23 is a surface facing the first direction first side X1 when the scaffolding member 2 is attached to the pair of first rails L1. The rear surface 25 is a surface facing the first direction second side X2 when the scaffolding member 2 is attached to the pair of first rails L1. In other words, the rear surface 25 is a surface of the main body 3 facing the side where the second rail L2 is located. As will be described later, in this embodiment, a plurality of scaffolding members 2 are attached to the pair of first rails L1 in order from the second rail L2 side toward the first direction first side X1. At that time, as shown in FIG. 12, the worker 7 sets up the multiple scaffolding members 2 in order from the first direction second side X2, which is the side of the second rail L2, as the near side toward the first direction first side X1, which is the far side. From this, it can be said that the front surface 23 is a surface facing the far side in the first direction X, and the rear surface 25 is a surface facing the near side in the first direction X. In this example, each of the front surface 23 and the rear surface 25 is formed so as to extend downward from both ends in the first direction X of the upper surface 24 of the main body part 3. Furthermore, in the illustrated example, a pair of extending edge parts 34 are formed extending along a horizontal plane from the lower end parts of each of the front surface 23 and the rear surface 25 toward the central region in the first direction X of the main body part 3. When the scaffolding members 2 are attached to the pair of first rails L1, the downward facing surfaces of the pair of extending edge parts 34 abut against the pair of first surfaces 11.

[0038] 5-2.Latching part In this embodiment, the scaffolding member 2 includes a pair of locking portions 4 provided so as to protrude downward from the main body portion 3. As shown in FIG. 9, the pair of locking portions 4 are locked from below to the pair of first rails L1, respectively. Then, the locking portions 4 restrict the main body portion 3 from moving upward in a state where they are locked to the pair of first rails L1, respectively. That is, the pair of locking portions 4 includes a locking portion 4 locked to the first rail L1 on the first side Y1 of the second direction, and a locking portion 4 locked to the first rail L1 on the second side Y2 of the second direction. Then, each of the pair of locking portions 4 is locked to the first extending portion 74 of the first rail L1 from below in a state where the scaffolding member 2 is attached to the pair of first rails L1.

[0039] In this embodiment, as shown in Figures 7, 8, and 9, at least one of the pair of locking parts 4 is a movable locking part 41 that is configured to be able to change its position between a locking position locked to the pair of first rails L1 and a locking release position unlocked from the pair of first rails L1 when the scaffolding member 2 is attached. in and the other is a fixed locking portion 45. The pair of locking portions 4 are attached separately to the front surface 23 and the rear surface 25 of the main body portion 3. That is, the pair of locking portions 4 are arranged separately in the diagonal direction of the main body portion 3. In this example, the fixed locking portion 45 is attached to the front surface 23, and the movable locking portion 41 is attached to the rear surface 25. In the illustrated example, the fixed locking portion 45 is attached to an end region of the front surface 23 on the first side Y1 in the second direction, and the movable locking portion 41 is attached to an end region of the rear surface 25 on the second side Y2 in the second direction.

[0040] In this embodiment, as shown in Figs. 7 and 8, in addition to the pair of locking parts 4, another locking part 4 is provided. That is, the scaffolding member 2 according to this embodiment has three locking parts 4. More specifically, in addition to the pair of the fixed locking part 45 and the movable locking part 41 described above, another fixed locking part 45 is provided. In this example, the additional fixed locking part 45 is attached to the end region of the second direction first side Y1 of the rear surface 25. That is, the movable locking part 41 and the fixed locking part 45 are attached to the rear surface 25 separately in the second direction Y. In this way, the scaffolding member 2 has a plurality of locking parts 4 attached to the front surface 23 facing one side of the first direction X in the main body part 3 and the rear surface 25 facing the other side of the first direction X.

[0041] 10, each of the multiple locking parts 4 is attached to the main body part 3 in an inclined position so as to face away from the main body part 3 in the first direction X as it goes downward from the main body part 3. The configurations of the fixed locking part 45 and the movable locking part 41 will be specifically described below.

[0042] 5-2-1. Fixed locking part 45 As shown in FIG. 9, the fixed engaging portion 45 has a fixed position relative to the main body 3. In this embodiment, the fixed engaging portion 45 includes a first fixed portion 46, a first lower portion 47, and a first protruding portion 48. The first fixed portion 46 is a portion that is fixed to the front surface 23 or the rear surface 25 of the main body 3. Specifically, the first fixed portion 46 is fastened and fixed to the target surface, which is the surface to be fixed, of either the front surface 23 or the rear surface 25, by a second fastening member 49. Therefore, in this example, the first fixed portion 46 is fixed in a state parallel to and in contact with the target surface. The first lower portion 47 extends downward from the lower edge of the first fixed portion 46. In this example, as shown in FIG. 10, the first lower portion 47 includes a first bent portion 47A. In the first bent portion 47A, as viewed in the second direction along the second direction Y, a portion below the first bent portion 47A is bent relative to the portion above the first bent portion 47A and the first fixed portion 46 so as to be inclined toward the side away from the main body portion 3 in the first direction X. As a result, the fixed locking portion 45 is attached to the main body portion 3 in a posture inclined toward the side away from the main body portion 3 in the first direction X as it moves downward from the main body portion 3. The first protruding portion 48 is formed so as to protrude from the lower end region of the first lower portion 47 toward the outside in the second direction Y. Then, when the scaffolding member 2 is attached to the pair of first rails L1, the surface facing the upper side of the first protruding portion 48 abuts against the lower end of the first extending portion 74 of the first rail L1. As a result, the first rail L1 is sandwiched between the extending edge portion 34 and the first protruding portion 48 in the up-down direction Z. In the illustrated example, the fixed locking portion 45 is a plate-shaped member. The first fixed portion 46, the first lower portion 47, and the first protruding portion 48 are integrally formed.

[0043] 5-2-2. Movable locking part 41 As described above, the movable locking part 41 is configured to be changeable between a locking position where it is locked to the pair of first rails L1 and an unlocked position where it is unlocked from the pair of first rails L1. In this embodiment, the movable locking part 41 is attached to the front surface 23 or the rear surface 25 of the main body 3. The movable locking part 41 is configured to be swingable about an axis along the first direction X. The movable locking part 41 is biased in a direction to assume the locking position, and includes an operating part 43 that accepts an operation for changing the position from the locking position to the unlocked position.

[0044] In this embodiment, as shown in FIG. 9, the movable locking part 41 includes a swing fulcrum 50, an operation part 43, an operation support part 44, a second lower part 40, and a second protrusion part 42. The movable locking part 41 is supported by the main body part 3 so as to swing around an axis along the first direction X with the swing fulcrum 50 as the center. In this example, the movable locking part 41 is supported on the rear surface 25 of the main body part 3 by a fastener provided on the swing fulcrum 50. The first rail L1 that is the locking target of the movable locking part 41 among the pair of first rails L1 is set as the target first rail L1A, and the operation support part 44 extends from the swing fulcrum 50 to the side away from the target first rail L1A in the locking posture. In the illustrated example, the operation support part 44 extends from the swing fulcrum 50 to the second direction first side Y1 in the locking posture. In the locking position, the second lower portion 40 extends downward from the swing fulcrum 50. In this example, as shown in Fig. 10, the second lower portion 40 has a second bent portion 40A. In this second bent portion 40A, when viewed in the second direction along the second direction Y, a portion below the second bent portion 40A is bent so as to incline toward a side away from the main body portion 3 in the first direction X with respect to a portion above it and the operation support portion 44. As a result, the movable locking portion 41 is attached to the main body portion 3 in a position inclined toward a side away from the main body portion 3 in the first direction X as it moves downward from the main body portion 3.

[0045] The second protrusion 42 is formed so as to protrude outward in the second direction Y from the lower region of the second lower part 40. Then, when the scaffolding member 2 is attached to the pair of first rails L1 and the movable locking part 41 is in the locking position, the surface facing the upper side of the second protrusion 42 abuts against the lower end of the first extending part 74 of the first rail L1 (target first rail L1A). As a result, the first rail L1 is sandwiched between the extending edge part 34 and the second protrusion 42 in the up-down direction Z. The operation part 43 is provided at the end of the operation support part 44 that is farther from the swing fulcrum 50. In this example, the operation part 43 is formed so as to protrude from the upper edge part of the operation support part 44 in the first direction X. In this embodiment, the movable locking part 41 is a plate-shaped member. Then, the operation part 43, the operation support part 44, the second lower part 40, and the second protrusion 42 are integrally formed.

[0046] As described above, the movable locking part 41 is biased in a direction from the unlocked position to the locked position. In this embodiment, the movable locking part 41 is biased so that the second protrusion 42 swings toward the target first rail L1A when the scaffolding member 2 is attached to the pair of first rails L1. In the example shown in FIG. 9, the movable locking part 41 is biased in a direction to swing clockwise when viewed toward the back side of the paper (first side X1 in the first direction). In this embodiment, the movable locking part 41 is biased by its own weight. Specifically, the weight of the operating part 43 side with respect to the swing fulcrum 50 in the movable locking part 41 is set to be larger than the weight of the second protrusion 42 side with respect to the swing fulcrum 50. As a result, the movable locking part 41 swings in a direction in which the operating part 43 moves downward due to its own weight. Accordingly, the second protrusion 42 moves toward the target first rail L1A side. As a result, the movable locking portion 41 is in a locked position, and the first rail L1 is sandwiched between the extending edge portion and the second protruding portion in the up-down direction Z.

[0047] On the other hand, when the worker 7 moves the operating part 43 upward in the mounted state of the scaffolding member 2, the movable locking part 41 swings in the direction opposite to the biasing direction, and changes from the locking posture to the unlocking posture. In the example shown in FIG. 9, the movable locking part 41 swings counterclockwise when viewed toward the back side of the paper (first side X1 in the first direction). As a result, as shown by the two-dot chain line in FIG. 9, the second protrusion 42 moves to the side away from the target first rail L1A, and the locking posture is changed. In the locking release posture of the movable locking part 41, the first rail L1 is not sandwiched between the extending edge part 34 and the second protrusion 42. In this way, the movable locking part 41 swings around the axis along the first direction X by the worker 7 operating the operating part 43 to move in the up-down direction Z, and changes its posture between the locking posture and the unlocking posture. In this embodiment, as shown by the solid line in Fig. 9, in the locked position of the movable locking part 41, the upper edges of the operation part 43 and the operation support part 44 are configured to be disposed along the upper surface of the main body part 3. Therefore, when the movable locking part 41 swings counterclockwise in Fig. 9 and assumes the unlocked position, the operation part 43 protrudes above the upper surface 24 of the main body part 3, as shown by the two-dot chain line in Fig. 9. In this way, the movable locking part 41 is configured such that in the unlocked position, the operation part 43 protrudes above the upper surface 24 of the main body part 3.

[0048] 5-3.Connection part In this embodiment, as shown in Figs. 7 and 8, the scaffolding member 2 includes a connecting portion 5 for connecting to another scaffolding member 2 adjacent in the first direction X. Here, the connecting portion 5 includes a first connector 15 provided on the front surface 23 and a second connector 17 provided on the rear surface 25 and detachably connected to the first connector 15. In this example, a plurality of first connectors 15 are provided on the front surface 23. The second connectors 17 are provided at positions corresponding to the first connectors 15 on the rear surface 25, and the same number as the first connectors 15. In this example, a plurality of first connectors 15 (two in this example) are arranged spaced apart in the second direction Y. A plurality of second connectors 17 (two in this example) are also arranged spaced apart in the second direction Y.

[0049] In this embodiment, as shown in FIG. 11, the second connector 17 is configured to be connected to the first connector 15 by engaging with the first connector 15 from above. In this example, as shown in FIGS. 7 and 8, the second connector 17 includes a second connector base 17a, an upper engagement portion 17b, and an upper connector 17c. The second connector base 17a is a portion fixed to the rear surface 25. An upper connector 17c extends from an upper portion of the second connector base 17a toward the outside in the first direction X. Furthermore, an upper connector 17b extends downward from an end portion of the upper connector 17c on the outside in the first direction X. With this configuration, the second connector 17 is formed in an inverted U shape when viewed in the second direction along the second direction Y. In this example, the first connector 15 includes a first connector base 15a, a lower engagement portion 15b, and a lower connector 15c. The first connector base 15a is a portion fixed to the front surface 23. The lower connector 15c extends outward in the first direction X from the lower portion of the first connector base 15a. Furthermore, the lower engagement portion 15b extends upward from the outer end of the lower connector 15c in the first direction X. With this configuration, the first connector 15 is formed in a U-shape when viewed in the second direction Y. The upper engagement portion 17b of the second connector 17 is inserted from above into the gap between the first connector base 15a and the lower engagement portion 15b of the first connector 15, thereby connecting the first connector 15 and the second connector 17.

[0050] In this embodiment, as shown in FIG. 12 and FIG. 13, the scaffolding members 2 are attached to the pair of first rails L1 in order from the near side in the first direction X so that the front surface 23 faces the far side in the first direction X. In this example, the "near side in the first direction X" is the side of the second rail L2 with respect to the first rail L1 in the first direction X, that is, the first direction second side X2. The "far side in the first direction X" is the side of the first rail L1 with respect to the second rail L2 in the first direction X, that is, the first direction first side X1. The worker 7 attaches the multiple scaffolding members 2 to the pair of first rails L1 so as to line up the multiple scaffolding members 2 in order from the end of the first direction second side X2 of the pair of first rails L1 toward the first direction first side X1. As a result, the multiple scaffolding members 2 are lined up along the pair of first rails L1 in order from the side closer to the walkway 39. At this time, the worker 7 attaches a plurality of scaffolding members 2 to the pair of first rails L1 while connecting adjacent scaffolding members 2 to each other. Specifically, the first connector 15 attached to the front surface 23 of the attached scaffolding member 2 is connected to the second connector 17 attached to the rear surface 25 of the scaffolding member 2 to be arranged next. At this time, the second connector 17 of the scaffolding member 2 to be attached later is engaged from above with the first connector 15 of the scaffolding member 2 attached earlier. Here, if the orientation of the scaffolding member 2 is mistaken and the scaffolding member 2 is attached to the pair of first rails L1 so that the front surface 23 faces the front side of the first direction X (first direction second side X2), the second connector 17 of the rear surface 25 will be disposed on the rear side of the first direction X (first direction first side X1). Then, even if one wishes to connect the first connector 15 of the scaffolding member 2 to be attached next to the second connector 17 of the previously attached scaffolding member 2, they cannot be connected unless the previously attached scaffolding member 2 is lifted up. Thus, according to this configuration, when performing the task of attaching multiple scaffolding members 2 to a pair of first rails L1 in order from the front side in the first direction X, adjacent scaffolding members 2 cannot be connected to each other unless the orientation of the scaffolding members 2 is correct. Therefore, it is possible to ensure that multiple scaffolding members 2 are installed in the correct orientation.

[0051] 6.Transportation and installation of scaffolding components In the following, a mode in which the scaffolding members 2 are transported to an arbitrary pair of first rails L1 and attached to the pair of first rails L1 will be described. In this embodiment, as shown in FIG. 12 and FIG. 13, a plurality of scaffolding members 2 are transported by the work parent cart 66 or the second transport vehicle 35 along the pair of second rails L2 to the position of an arbitrary pair of first rails L1. In the example of FIG. 12, a plurality of scaffolding members 2 are stacked on the work cart 6. Then, the worker 7 transports the work parent cart 66 on which the work cart 6 is placed, along the pair of second rails L2, to the position of an arbitrary pair of first rails L1 while walking along the walkway 39. After that, the worker 7 takes out the scaffolding members 2 from the work cart 6 and sequentially attaches them to the pair of first rails L1. Also, the worker 7 can take out the scaffolding members 2 from the work cart 6 sequentially and attach them to the pair of first rails L1 while moving the work cart 6 along the first rails L1. 13, multiple scaffolding members 2 are stacked on a second transport vehicle 35. The second transport vehicle 35 moves along a pair of second rails L2 and transports the multiple scaffolding members 2 to the position of an arbitrary pair of first rails L1. The worker 7 sequentially takes out the scaffolding members 2 from the second transport vehicle 35 parked at that position and attaches them to the pair of first rails L1.

[0052] 7.Storage of scaffolding materials In this embodiment, as shown in Fig. 12 and Fig. 13, a plurality of scaffolding members 2 are transported and stored in a stacked state. When the worker 7 finishes the work performed on the plurality of scaffolding members 2 attached to the pair of first rails L1, the worker 7 sequentially removes the plurality of scaffolding members 2 from the pair of first rails L1 and stacks them upside down on the work cart 6 or the second transport vehicle 35. As described above, each of the plurality of locking parts 4 (fixed locking part 45 and movable locking part 41) provided on the scaffolding member 2 is attached to the main body part 3 in an inclined position so as to face the side away from the main body part 3 in the first direction X as it goes downward from the main body part 3 (see Fig. 10). Therefore, as shown in Fig. 14, the plurality of locking parts 4 of the upside-down scaffolding member 2 are arranged in an inclined position so as to face the side away from the main body part 3 in the first direction X as it goes upward. Therefore, when stacking a new scaffolding member 2 on top of the scaffolding member 2, the worker 7 can stack the scaffolding members 2 with less deviation in the first direction X by using the locking portion 4 of the topmost scaffolding member 2 already stacked as a guide. In this manner, in this embodiment, the multiple locking portions 4 of one scaffolding member 2 also function as guides when stacking the scaffolding members 2 upside down. This allows the worker 7 to stably stack multiple scaffolding members 2. Note that, in a state in which the scaffolding member 2 is removed from the pair of first rails L1, the direction in which the pair of locking portions 4 (the movable locking portion 41 and the fixed locking portion 45) of the scaffolding member 2 are aligned in FIG. 14 is not necessarily the first direction X, but here, for convenience of explanation, the direction in which the pair of locking portions 4 (the movable locking portion 41 and the fixed locking portion 45) of the scaffolding member 2 are aligned in FIG. 14 (the direction perpendicular to the front surface 23 and the rear surface 25) is defined as the first direction X.

[0053] 8. Other embodiments Next, other embodiments of the article storage facility will be described.

[0054] (1) In the above embodiment, the article storage facility 1 includes a pair of second rails L2 arranged along the second direction Y, and the second transport vehicle 35 and the work parent cart 66 each travel on the pair of second rails L2. However, the present invention is not limited to such a configuration, and the article storage facility 1 does not necessarily have to include a pair of second rails L2. Furthermore, the article storage facility 1 does not necessarily have to include the second transport vehicle 35 and the work parent cart 66.

[0055] (2) In the above embodiment, the scaffolding member 2 has been described as having a pair of locking portions 4 protruding downward from the main body portion 3. However, the scaffolding member 2 is not limited to such a configuration, and may not have a pair of locking portions 4.

[0056] (3) In the above embodiment, the movable locking part 41 is biased in the direction of the locking posture by its own weight. However, the present invention is not limited to such a configuration, and the movable locking part 41 may be biased in the direction of the locking posture by a biasing mechanism other than its own weight. In this case, it is preferable that the scaffold member 2 is provided with a biasing mechanism using an elastic member such as a spring or rubber, and the biasing mechanism biases the movable locking part 41 in the direction of the locking posture.

[0057] (4) In the above embodiment, a configuration has been described as an example in which, when the movable locking portion 41 is in the unlocked position, the operation portion 43 protrudes above the upper surface of the main body portion 3. However, the present invention is not limited to such a configuration, and the operation portion 43 may be disposed below the upper surface of the main body portion 3 when the movable locking portion 41 is in the unlocked position. Alternatively, the operation portion 43 may protrude above the upper surface of the main body portion 3 when the movable locking portion 41 is in the locked position.

[0058] (5) In the above embodiment, an example has been described in which, of the pair of locking portions 4, the fixed locking portion 45 is attached to the front surface 23 of the main body portion 3, and the movable locking portion 41 is attached to the rear surface 25 of the main body portion 3. However, the present invention is not limited to such a configuration, and the fixed locking portion 45 may be attached to the rear surface 25 of the main body portion 3, and the movable locking portion 41 may be attached to the front surface 23 of the main body portion 3. Furthermore, the pair of locking portions 4 provided on the scaffolding member 2 may be only the fixed locking portion 45. Similarly, the pair of locking portions 4 provided on the scaffolding member 2 may be only the movable locking portion 41.

[0059] (6) In the above embodiment, a configuration has been described as an example in which each of the multiple locking portions 4 is attached to the main body portion 3 inclined so as to face away from the main body portion 3 in the first direction X as it moves downward from the main body portion 3. However, the present invention is not limited to such a configuration, and each of the multiple locking portions 4 may be arranged parallel to the up-down direction Z. Also, each of the multiple locking portions 4 may be arranged parallel to the front surface 23 or the rear surface 25 of the main body portion 3.

[0060] (7) In the above embodiment, the second connector 17 is connected to the first connector 15 by engaging with the first connector 15 from above. However, the present invention is not limited to such a configuration, and may be configured, for example, such that the second connector 17 and the first connector 15 are connected by a movable connecting mechanism. Also, for example, the second connector 17 and the first connector 15 may be connected by the magnetic force of a magnet.

[0061] (8) In the above embodiment, the work cart 6 has been described as being configured to travel in the first direction X by the third wheels 56 of the work cart 6 rolling on the second surface 12. However, the work cart 6 is not limited to such a configuration, and may be configured such that the third wheels 56 of the work cart 6 roll on the first surface 11 to travel in the first direction X.

[0062] (9) In the above embodiment, the work cart 6 is described as having the second guide wheel 58 that rolls on the third surface 13. However, the present invention is not limited to such a configuration, and the work cart 6 does not necessarily have to have the second guide wheel 58.

[0063] (10) In the above embodiment, a configuration has been described as an example in which the second surface 12 of the first rail L1 is an article placement surface 62 on which the article W to be stored is placed. However, the present invention is not limited to such a configuration, and the second surface 12 does not have to be the article placement surface 62. In this case, it is preferable that a storage section for storing the article W is separately provided.

[0064] (11) The configurations disclosed in the above-mentioned embodiments (including the above-mentioned embodiments and other embodiments; the same applies below) can be applied in combination with configurations disclosed in other embodiments, as long as no contradiction occurs. As for other configurations, the embodiments disclosed in this specification are illustrative in all respects and can be appropriately modified within the scope of the present disclosure.

[0065] 9. Overview of the above embodiment The following provides an overview of the above-described article storage facility.

[0066] The item storage facility includes a pair of rails arranged along a first direction and a transport vehicle that travels along the pair of rails to transport items, and further includes a plurality of scaffolding members that are detachable from the pair of rails, and a second direction is a direction perpendicular to the first direction when viewed in a vertical direction, and each of the pair of rails has a first surface and a second surface, the first surface is an upward surface that extends along the first direction and forms a running surface on which wheels of the transport vehicle roll, and the second surface is an upward surface that extends along the first direction and is positioned above the first surface, and the pair of first surfaces are positioned inside the pair of second surfaces in the second direction, and the scaffolding members are positioned between the pair of second surfaces in the second direction when attached to the pair of rails and are placed on the pair of first surfaces, and in the attached state, the entire scaffolding member is positioned below the second surface.

[0067] According to this configuration, the scaffolding members can be set up using existing rails provided for the transport vehicle to travel on. At that time, the scaffolding members are disposed between the pair of second surfaces in the second direction and placed on the pair of first surfaces, so that the scaffolding members can be appropriately set up while being positioned in the second direction by the rails. In addition, since the entire scaffolding member in the attached state is positioned below the second surface, the portion of the rail connecting the first surface and the second surface is positioned to rise up on both outer sides of the scaffolding member in the second direction. This makes it easier for workers to recognize the outer edge of the scaffolding, and increases the safety of workers working on the scaffolding member. In this manner, according to this configuration, a work scaffold can be appropriately set up by utilizing the existing configuration of the item storage facility.

[0068] Here, the scaffolding member preferably includes, in addition to a main body portion that is arranged between a pair of the second surfaces in the second direction and placed on a pair of the first surfaces, a pair of locking portions that are arranged to protrude downward from the main body portion, the pair of locking portions being locked to each of the pair of rails from below, and the locking portions being configured to restrict the main body portion from moving upward while locked to each of the pair of rails.

[0069] According to this configuration, by setting the locking portion in the locked state, the locking portion and the main body portion sandwich the rails in the vertical direction, and the main body portion can be restricted from moving in the vertical direction. As a result, when the locking portion is in the locked state, the scaffolding member cannot come off the pair of rails, and the safety of workers working on the scaffolding member can be increased.

[0070] Furthermore, at least one of the pair of locking portions is a movable locking portion configured to be able to change its position between a locking position in which it is locked to the pair of rails and a release position in which it is released from the locking position when the scaffolding member is in the attached state, and it is preferable that the movable locking portion is biased in the direction of the locking position and is provided with an operating portion that accepts operation to change the position from the locking position to the release position.

[0071] According to this configuration, by changing the position of the movable locking part from the locking position to the unlocking position, the scaffolding member can be attached to and detached from the pair of rails relatively easily. In addition, since the movable locking part is biased in the direction of the locking position, the movable locking part will not be in the unlocking position unless the movable locking part is operated against the biasing force. Therefore, the possibility that the movable locking part will be in the unlocking position by mistake can be reduced, and the safety of workers working on the scaffolding member can be further improved.

[0072] It is also preferable that the movable locking portion is configured such that, in the unlocked position, the operating portion protrudes above an upper surface of the main body portion.

[0073] According to this configuration, the worker can easily visually confirm that the movable locking part is in the unlocked position, which makes it easier to avoid the worker working in the unlocked position by mistake, thereby further improving the safety of the worker.

[0074] In addition, one of the pair of locking portions is the movable locking portion. in and the other is a fixed locking part, the fixed locking part has a fixed attitude relative to the main body part, the main body part has a front surface facing one side in the first direction and a rear surface facing the other side in the first direction, and the scaffolding member is attached to the pair of rails in order from the front side in the first direction so that the front surface faces the rear side in the first direction, the fixed locking part is attached to the front surface and the movable locking part is attached to the rear surface.

[0075] According to this configuration, the movable locking portion that needs to be operated by the worker is attached to the surface of the scaffolding member that is the starting end in the installation sequence of the scaffolding members on a pair of rails, making it easy for the worker to safely install the scaffolding members.

[0076] It is also preferable that the multiple locking portions are attached separately to a front surface of the main body portion facing one side in the first direction and a rear surface facing the other side in the first direction, and that each of the multiple locking portions is attached to the main body portion in an inclined position so as to face away from the main body portion in the first direction as it moves downward from the main body portion.

[0077] According to this configuration, when multiple scaffolding members are stacked upside down for storage, the multiple scaffolding members can be stacked stably using the locking portions as guides.

[0078] Furthermore, it is preferable that the scaffolding member has a main body portion that is arranged between a pair of the second surfaces in the second direction and placed on a pair of the first surfaces, and also has a connecting portion for connecting to another scaffolding member adjacent in the first direction, the main body portion having a front surface facing one side of the first direction and a rear surface facing the other side of the first direction, the scaffolding member is attached to the pair of rails in order from the front side in the first direction so that the front surface faces the rear side in the first direction, and the connecting portion has a first connector provided on the front surface and a second connector provided on the rear surface and detachably connected to the first connector, and the second connector is configured to connect to the first connector by engaging with the first connector from above.

[0079] According to this configuration, when performing work to attach multiple scaffolding members to a pair of rails in order from the front side in the first direction, adjacent scaffolding members cannot be connected to each other unless the orientation of the scaffolding members is correct. Therefore, according to this configuration, when attaching multiple scaffolding members to a pair of rails, the multiple scaffolding members can be installed in the correct orientation.

[0080] The present invention further includes a work cart for transporting a plurality of the scaffolding members, the work cart being configured so that its wheels roll on the second surface to run along the first direction, and it is preferable that an inner lower end, which is a lower end of a part of the work cart that is positioned on the inside of the pair of second surfaces in the second direction, is positioned above the scaffolding members in the attached state.

[0081] According to this configuration, even when the scaffolding members are attached to the pair of rails, the work cart can be run along the pair of rails. Therefore, when attaching multiple scaffolding members to the pair of rails when there are no scaffolding members between the pair of rails, the multiple scaffolding members can be transported by the work cart, and a worker can take the scaffolding members out of the work cart one by one and attach them to the pair of rails in sequence.

[0082] It is also preferable that each of the pair of rails further has a third surface facing inward in the second direction and extending along the first direction, the third surface being arranged between the first surface and the second surface in the vertical direction, the work cart having a guide wheel that rolls on the third surface, and the guide wheel being arranged above the scaffolding member in the attached state.

[0083] According to this configuration, the work cart can be appropriately guided along the pair of rails. Also, even if the work cart is configured to have such guide wheels, it is possible to prevent the work cart from interfering with the scaffolding member in the attached state.

[0084] Furthermore, the second surface is an item placement surface on which the items to be stored are placed, and the transport vehicle is equipped with a support surface that supports the underside of the items to be transported, and a lifting device that raises and lowers the support surface, and the lifting device is configured to raise and lower the support surface between a lowered position that positions the support surface below the second surface and an elevated position that positions the support surface above the second surface, and it is preferable that when the support surface is in the lowered position, the entire transport vehicle is positioned below the second surface.

[0085] According to this configuration, a plurality of articles can be stored in a line along the pair of rails. Also, the transport vehicle can travel under the articles placed on the pair of second surfaces, and can lift and move the articles by the support surfaces that are raised and lowered by the lifting device. [Industrial Applicability]

[0086] The technology disclosed herein can be used in item storage facilities. [Explanation of symbols]

[0087] 1: Item storage facilities 2: Scaffolding materials 3: Main body 4: Locking part 5:Connection part 6: Work trolley 8: Ascending position 9: Lowered position L1: First rail 11: 1st page 12:Second side 13:Third side 14: Running surface 15: 1st connector 17:Second connector 23:Front 24:Top surface 25: Rear 30: First transport vehicle (transport vehicle) 31: First wheel (vehicle wheel) 32: 1st support surface (support surface) 41: Movable locking part 43:Operation section 45: Fixed locking part 52: Lower inner edge 56: 3rd wheel (work platform wheel) 58: Second guide wheel (guide wheel of work cart) 62: Item placement surface 70: Lifting device W:Goods X: 1st direction Y: Second direction Z: Vertical direction

Claims

1. An article storage facility including a pair of rails arranged along a first direction and a transport vehicle that travels along the pair of rails to transport articles, Further comprising a plurality of scaffolding members detachable from the pair of rails, A direction perpendicular to the first direction when viewed in the up-down direction is defined as a second direction, Each of the pair of rails has a first surface and a second surface; The first surface is an upward facing surface that extends along the first direction and forms a running surface on which wheels of the transport vehicle roll; the second surface is an upward facing surface that extends along the first direction and is disposed above the first surface; a pair of the first surfaces are disposed on the inner side in the second direction with respect to a pair of the second surfaces, the scaffolding member is disposed between the pair of second surfaces in the second direction and placed on the pair of first surfaces in a mounted state in which the scaffolding member is mounted on the pair of rails, In the attached state, the entire scaffold member is disposed below the second surface, the scaffolding member includes a main body portion disposed between the pair of second surfaces in the second direction and placed on the pair of first surfaces, An item storage facility, wherein the dimension of the main body portion in the second direction is greater than the dimension between the pair of first surfaces and smaller than the dimension between the pair of second surfaces.

2. The scaffolding member includes, in addition to the main body portion, a pair of locking portions provided so as to protrude downward from the main body portion, The pair of locking portions are locked to the pair of rails from below, The article storage facility according to claim 1 , wherein the locking portions are configured to restrict the main body from moving upward when locked to each of the pair of rails.

3. An article storage facility comprising a pair of rails arranged along a first direction and a transport vehicle that travels along the pair of rails to transport articles, Further comprising a plurality of scaffolding members detachable from the pair of rails, A direction perpendicular to the first direction when viewed in the up-down direction is defined as a second direction, Each of the pair of rails has a first surface and a second surface; The first surface is an upward facing surface that extends along the first direction and forms a running surface on which wheels of the transport vehicle roll; the second surface is an upward facing surface that extends along the first direction and is disposed above the first surface; a pair of the first surfaces are disposed on the inner side in the second direction with respect to a pair of the second surfaces, the scaffolding member is disposed between the pair of second surfaces in the second direction and placed on the pair of first surfaces in a mounted state in which the scaffolding member is mounted on the pair of rails, In the attached state, the entire scaffold member is disposed below the second surface, the scaffolding member includes a main body portion disposed between the pair of second surfaces in the second direction and placed on the pair of first surfaces, and a pair of locking portions provided so as to protrude downward from the main body portion, The pair of locking portions are locked to the pair of rails from below, The locking portion is configured to restrict the main body from moving upward in a state where the locking portion is locked to each of the pair of rails, At least one of the pair of locking portions is a movable locking portion configured to be able to change its position between a locking position locked to the pair of rails and a release position unlocked from the locking with the pair of rails in the mounted state of the scaffolding member, The movable locking portion is biased in a direction toward the locking position, and is provided with an operating portion that accepts an operation for changing the position from the locking position to the unlocked position.

4. The article storage facility according to claim 3 , wherein the movable locking portion is configured such that, in the unlocked position, the operating portion protrudes above an upper surface of the main body portion.

5. One of the pair of locking portions is the movable locking portion and the other is a fixed locking portion, The fixed engaging portion has a fixed position relative to the main body portion, The main body portion includes a front surface facing one side in the first direction and a rear surface facing the other side in the first direction, The scaffolding members are attached to the pair of rails in order from the front side in the first direction so that the front sides face the back side in the first direction, 5. The article storage facility according to claim 3, wherein the fixed engaging portion is attached to the front surface and the movable engaging portion is attached to the rear surface.

6. An article storage facility comprising a pair of rails arranged along a first direction and a transport vehicle that travels along the pair of rails to transport articles, Further comprising a plurality of scaffolding members detachable from the pair of rails, A direction perpendicular to the first direction when viewed in the up-down direction is defined as a second direction, Each of the pair of rails has a first surface and a second surface; The first surface is an upward facing surface that extends along the first direction and forms a running surface on which wheels of the transport vehicle roll; the second surface is an upward facing surface that extends along the first direction and is disposed above the first surface; a pair of the first surfaces are disposed on the inner side in the second direction with respect to a pair of the second surfaces, the scaffolding member is disposed between the pair of second surfaces in the second direction and placed on the pair of first surfaces in a mounted state in which the scaffolding member is mounted on the pair of rails, In the attached state, the entire scaffold member is disposed below the second surface, the scaffolding member includes a main body portion disposed between the pair of second surfaces in the second direction and placed on the pair of first surfaces, and a pair of locking portions provided so as to protrude downward from the main body portion, The pair of locking portions are locked to the pair of rails from below, The locking portion is configured to restrict the main body from moving upward in a state where the locking portion is locked to each of the pair of rails, the plurality of locking portions are attached separately to a front surface of the main body portion facing one side in the first direction and a rear surface of the main body portion facing the other side in the first direction, An article storage facility in which each of the multiple engagement portions is attached to the main body portion in an inclined position so as to face away from the main body portion in the first direction as it extends downward from the main body portion.

7. An article storage facility comprising a pair of rails arranged along a first direction and a transport vehicle that travels along the pair of rails to transport articles, Further comprising a plurality of scaffolding members detachable from the pair of rails, A direction perpendicular to the first direction when viewed in the up-down direction is defined as a second direction, Each of the pair of rails has a first surface and a second surface; The first surface is an upward facing surface that extends along the first direction and forms a running surface on which wheels of the transport vehicle roll; the second surface is an upward facing surface that extends along the first direction and is disposed above the first surface; a pair of the first surfaces are disposed on the inner side in the second direction with respect to a pair of the second surfaces, the scaffolding member is disposed between the pair of second surfaces in the second direction and placed on the pair of first surfaces in a mounted state in which the scaffolding member is mounted on the pair of rails, In the attached state, the entire scaffold member is disposed below the second surface, the scaffold member includes, in addition to a main body portion disposed between the pair of second surfaces in the second direction and placed on the pair of first surfaces, a connecting portion for connecting to another scaffold member adjacent in the first direction, The main body portion includes a front surface facing one side in the first direction and a rear surface facing the other side in the first direction, The scaffolding members are attached to the pair of rails in order from the front side in the first direction so that the front sides face the back side in the first direction, the connecting portion includes a first connecting body provided on the front surface and a second connecting body provided on the rear surface and detachably connected to the first connecting body, The second connecting body is configured to be connected to the first connecting body by engaging with the first connecting body from above.

8. An article storage facility comprising a pair of rails arranged along a first direction and a transport vehicle that travels along the pair of rails to transport articles, Further comprising a plurality of scaffolding members detachable from the pair of rails, A direction perpendicular to the first direction when viewed in the up-down direction is defined as a second direction, Each of the pair of rails has a first surface and a second surface; The first surface is an upward facing surface that extends along the first direction and forms a running surface on which wheels of the transport vehicle roll; the second surface is an upward facing surface that extends along the first direction and is disposed above the first surface; a pair of the first surfaces are disposed on the inner side in the second direction with respect to a pair of the second surfaces, the scaffolding member is disposed between the pair of second surfaces in the second direction and placed on the pair of first surfaces in a mounted state in which the scaffolding member is mounted on the pair of rails, In the attached state, the entire scaffold member is disposed below the second surface, Further comprising a work cart for transporting a plurality of the scaffolding members, The work platform is configured to travel along the first direction by rolling the wheels of the work platform on the second surface, An item storage facility in which an inner lower end portion, which is a lower end portion of a portion of the work cart that is positioned inward in the second direction relative to a pair of the second surfaces, is positioned above the scaffolding member in the installed state.

9. Each of the pair of rails further includes a third surface that faces inward in the second direction and extends along the first direction, the third surface is disposed between the first surface and the second surface in the up-down direction, The work platform includes a guide wheel that rolls on the third surface, The item storage facility according to claim 8 , wherein the guide wheels are positioned above the scaffold members in the installed state.

10. The second surface is an article placement surface on which the article to be stored is placed, The transport vehicle includes a support surface that supports a lower surface of the article to be transported, and a lifting device that raises and lowers the support surface; the lifting device is configured to lift and lower the support surface between a lowered position at which the support surface is positioned below the second surface and an upper position at which the support surface is positioned above the second surface; The article storage facility according to claim 1 , wherein when the support surface is in the lowered position, the entire transport vehicle is positioned below the second surface.

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