Lifting device

Abstract

To provide a lifting device including a first cable connected to a first lifting body and a first protective member for storing the first cable, and capable of suppressing the possibility that the first protective member interferes with a second lifting body below the first lifting body.SOLUTION: The first elevation locus T1, which is the elevation locus of the first elevator 2, and the second elevation locus T2, which is the elevation locus of the second elevator, overlap each other when viewed in the vertical direction. The first protection member 5 is arranged such that the first moving-side hanging part 53 hanging from the first moving end 51 and the first fixed-side hanging part 54 hanging from the first fixed end 52 are aligned in the Y direction. The bending direction of the first connecting portion 55, which is bent so as to protrude downward and connects the lower ends of the first moving-side hanging portion 53 and the first fixed-side hanging portion 54, is limited to a direction along the Y direction when viewed in the vertical direction, and the first moving-side hanging portion 53 and the first fixed-side hanging portion 54 are arranged on the first side T1 in the X direction with respect to the first elevation trajectory T2 and the second elevation trajectory X1.SELECTED DRAWING: Figure 3

Description

[Technical Field]

[0001] The present invention relates to a lifting device that includes a support column arranged in the vertical direction, a first lifting body that moves up and down along the support column, and a second lifting body that moves up and down along the support column below the first lifting body. [Background technology]

[0002] An example of such an elevator device is disclosed in Patent Document 1 below (see FIG. 2 of Patent Document 1).

[0003] Furthermore, the following Patent Document 2 discloses an elevator device including a support (7) arranged in the vertical direction, an elevator (10) that moves up and down along the support, a cable (13) connected to the elevator, and a protective member (17) that houses the cable. The reference numerals in parentheses are those in Patent Document 2. [Prior art documents] [Patent documents]

[0004] [Patent Document 1] US Patent Application Publication No. 2018 / 0208397 [Patent Document 2] Japanese Patent Application Publication No. 07-2307 Summary of the Invention [Problem to be solved by the invention]

[0005] Incidentally, it is conceivable to apply the configuration of Patent Document 2 to the lifting device of Patent Document 1, and provide a first cable connected to the first lifting body and a first protective member that houses the first cable. However, with such a configuration, if the first protective member swings toward the lifting trajectory of the second lifting body due to the lifting or lowering of the first lifting body, there is a possibility that the first protective member will interfere with the second lifting body.

[0006] Therefore, it is desirable to realize a lifting device that has a configuration including a first cable connected to a first lifting body and a first protective member that houses the first cable, and that can reduce the possibility of the first protective member interfering with a second lifting body that is below the first lifting body. [Means for solving the problem]

[0007] In view of the above, the characteristic configuration of the lifting device is as follows: Support columns arranged along the vertical direction; a first lifting body that moves up and down along the support; a second lifting body that moves up and down along the support pillar below the first lifting body; a first cable connected to the first lifting body; a first protective member that houses the first cable, the first protective member comprises: a first moving end connected to the first lifting body; a first fixed end connected to the support column or a first fixed member whose position relative to the support column is fixed; a first moving-side hanging portion hanging downward from the first moving end; a first fixed-side hanging portion hanging downward from the first fixed end; and a first connecting portion bent to protrude downward and connecting lower ends of the first moving-side hanging portion and the first fixed-side hanging portion; a first lifting / lowering trajectory that is a lifting / lowering trajectory of the first lifting body and a second lifting / lowering trajectory that is a lifting / lowering trajectory of the second lifting body overlap in an up-down direction, A specific direction along the horizontal direction is defined as an X direction, a direction perpendicular to the X direction when viewed in the up-down direction is defined as a Y direction, and one side of the X direction is defined as an X direction first side, the first protective member has a structure in which the first movable-side hanging portion and the first fixed-side hanging portion are arranged side by side in the Y direction, and a bending direction of the first connection portion is limited to a direction along the Y direction as viewed in the up-down direction, The first movable-side hanging portion and the first fixed-side hanging portion are both disposed on the first side in the X direction with respect to the first lifting and lowering locus and the second lifting and lowering locus.

[0008] According to this characteristic configuration, even if the first protective member sways due to the ascent and descent of the first lifting body, the swaying in the X direction is limited, and the first protective member can be prevented from heading toward the ascent and descent trajectory of the second lifting body. Therefore, in a configuration including a first cable connected to the first lifting body and a first protective member that houses the first cable, it is possible to reduce the possibility that the first protective member will interfere with the second lifting body that is below the first lifting body. [Brief explanation of the drawings]

[0009] [Figure 1] 1 is a perspective view of an elevator device according to an embodiment; [Figure 2] FIG. 1 is a perspective view showing a configuration of a part of a lifting device according to an embodiment; [Figure 3] FIG. 1 is a plan view of one of the lifting devices according to an embodiment; [Figure 4] FIG. 10 is a plan view of the other lifting device according to the embodiment; DETAILED DESCRIPTION OF THE INVENTION

[0010] Hereinafter, the lifting device 100 according to the embodiment will be described with reference to the drawings.

[0011] As shown in Fig. 1, in this embodiment, the lifting device 100 is installed in an item storage facility that includes storage equipment F for storing a plurality of transport objects W. The storage equipment F includes a plurality of storage sections Fa that are arranged side by side in the vertical direction Z and are each configured to store the transport objects W. In this embodiment, each of the plurality of storage sections Fa includes a roller conveyor for transferring the transport objects W to and from the item transport cart, and this roller conveyor is shown in the figure. The vertical direction Z coincides with the vertical direction.

[0012] Here, a specific direction along the horizontal direction is referred to as the "X direction," and a direction perpendicular to the X direction in a vertical view along the vertical direction Z is referred to as the "Y direction." These X and Y directions are indicated in the drawings by arrows marked with "X" and "Y," respectively.

[0013] In this embodiment, a pair of lifting devices 100 are provided for one storage facility F. Hereinafter, for ease of explanation, one of the pair of lifting devices 100 will be referred to as a "first lifting device 100A" and the other as a "second lifting device 100B."

[0014] The first lifting device 100A and the second lifting device 100B are arranged side by side in the X direction. The first lifting device 100A and the second lifting device 100B are arranged adjacent to each other in the Y direction with respect to the storage facility F. The first lifting device 100A and the second lifting device 100B have similar configurations and are arranged symmetrically with respect to a plane perpendicular to the X direction. Therefore, hereinafter, only the first lifting device 100A will be described, and a description of the second lifting device 100B will be omitted unless otherwise specified.

[0015] 1 and 2, the first lifting device 100A includes a support 1, a first lifting body 2, a second lifting body 3, a first cable 4 (see FIG. 2), and a first protective member 5. In this embodiment, the lifting device 100 further includes a second cable 6 (see FIG. 2) and a second protective member 7.

[0016] As shown in Fig. 1, the support pillar 1 is arranged along the vertical direction Z. The support pillar 1 stands on the floor surface of the item storage facility.

[0017] The first lifting body 2 is configured to move up and down along the support pole 1. In this embodiment, the first lifting body 2 is configured to stop at a position in the vertical direction Z corresponding to one of the multiple storage sections Fa in the storage facility F. In this embodiment, the first lifting body 2 is connected to a first lifting belt 21 provided along the support pole 1. The first lifting belt 21 is wound around first pulleys (not shown) arranged at the top and bottom of the support pole 1. The first pulley arranged at the bottom of the support pole 1 is rotationally driven by a first lifting drive device 22 such as a motor, causing the first lifting body 2 to move up and down via the first lifting belt 21.

[0018] In this embodiment, the first lifting body 2 is configured to lift and transport the transport object W. In this embodiment, the first lifting body 2 includes a first support portion 23.

[0019] The first support unit 23 is configured to support the transport object W. In this embodiment, the first support unit 23 is a belt conveyor configured to transport the transport object W in the Y direction and transfer the transport object W between it and any of the multiple storage units Fa. In this embodiment, the first support unit 23 serving as a belt conveyor is driven by a first transfer drive unit 24. The first transfer drive unit 24 is a motor that rotates and drives rollers around which a belt is wound in the first support unit 23 serving as a belt conveyor.

[0020] The second lifting body 3 is configured to move up and down along the support pole 1. The second lifting body 3 is arranged below the first lifting body 2. In this embodiment, the second lifting body 3 is configured to stop at a position in the vertical direction Z corresponding to one of the multiple storage sections Fa in the storage facility F. In this embodiment, the second lifting body 3 is connected to a second lifting belt 31 provided along the support pole 1. The second lifting belt 31 is arranged adjacent to the first lifting belt 21 in the Y direction. The second lifting belt 31 is wound around second pulleys (not shown) arranged at the top and bottom of the support pole 1. The second pulleys arranged at the bottom of the support pole 1 are rotationally driven by a second lifting drive device 32 such as a motor, causing the second lifting body 3 to move up and down via the second lifting belt 31.

[0021] In this embodiment, the second lifting body 3 is configured to lift and transport the transport object W. In this embodiment, the second lifting body 3 includes a second support part 33 and a second transfer driving part 34.

[0022] The second support unit 33 is configured to support the transport object W. In this embodiment, the second support unit 33 is a belt conveyor configured to transport the transport object W in the Y direction and transfer the transport object W between any of the multiple storage units Fa. In this embodiment, the second support unit 33 serving as a belt conveyor is driven by a second transfer drive unit 34. The second transfer drive unit 34 is a motor that rotates and drives rollers around which a belt is wound in the second support unit 33 serving as a belt conveyor.

[0023] The first cable 4 (see FIG. 2) is a cable connected to the first lifting body 2. In this embodiment, the first cable 4 includes at least one of a power line for transmitting power to the first transfer driving unit 24 and a signal line for transmitting an electrical signal to the first transfer driving unit 24.

[0024] The second cable 6 (see FIG. 2) is a cable connected to the second lifting body 3. In this embodiment, the second cable 6 includes at least one of a power line for transmitting power to the second transfer driving unit 34 and a signal line for transmitting an electric signal to the second transfer driving unit 34.

[0025] The first protective member 5 is a member that houses the first cable 4. The second protective member 7 is a member that houses the second cable 6. In this embodiment, each of the first protective member 5 and the second protective member 7 is a cable carrier. The cable carrier includes a plurality of link bodies that are linearly connected to each other so as to be able to swing freely, and a housing space that houses cables such as the first cable 4 and the second cable 6 is formed along the extension direction of the cable carrier, which is determined by the arrangement direction of the plurality of link bodies. The cable carrier is configured so that when bent, adjacent link bodies in the extension direction come into contact with each other, preventing the radius of curvature of the bent portion from becoming less than a specified value. This makes it possible to prevent the cable housed in the cable carrier from being bent to a radius of curvature less than the allowable radius.

[0026] As shown in FIG. 2, the first protective member 5 includes a first moving end portion 51, a first fixed end portion 52, a first moving side hanging portion 53, a first fixed side hanging portion 54, and a first connecting portion 55.

[0027] The first moving end 51 is one of both ends in the extension direction of the first protective member 5. The first moving end 51 is connected to the first lifting body 2. In this embodiment, the first moving end 51 is connected to the first lifting body 2 via a plate-shaped first connecting member 25.

[0028] The first fixed end 52 is the other of the two ends in the extension direction of the first protective member 5. The first fixed end 52 is connected to the support 1 or a first fixing member 11 whose position relative to the support 1 is fixed. In this embodiment, the first fixed end 52 is fixed to the support 1 via the plate-shaped first fixing member 11.

[0029] First movable-side hanging portion 53 hangs downward from first movable end portion 51. First fixed-side hanging portion 54 hangs downward from first fixed end portion 52. First connecting portion 55 bends so as to protrude downward, and connects the lower ends of first movable-side hanging portion 53 and first fixed-side hanging portion 54 to each other.

[0030] As first lifting body 2 moves up and down, the position of first connecting portion 55 in the vertical direction Z changes, and the vertical dimensions of first moving-side hanging portion 53 and first fixed-side hanging portion 54 change. To explain further, when first lifting body 2 moves up, first connecting portion 55 moves upward, the vertical dimension of first moving-side hanging portion 53 increases, and the vertical dimension of first fixed-side hanging portion 54 decreases. On the other hand, when first lifting body 2 moves down, first connecting portion 55 moves downward, the vertical dimension of first moving-side hanging portion 53 decreases, and the vertical dimension of first fixed-side hanging portion 54 increases.

[0031] First protective member 5 is arranged so that first movable-side hanging portion 53 and first fixed-side hanging portion 54 are aligned in the Y direction. First protective member 5 has a structure in which the bending direction of first connection portion 55 is limited to the direction along the Y direction when viewed in the up-down direction. Therefore, first protective member 5 swings in the Y direction due to the elevation of first lifting body 2, while swinging in the X direction is limited. Here, in this application, "a direction along a specific direction" includes not only a direction parallel to the specific direction but also a direction intersecting the specific direction within a predetermined angle range (for example, 20° or less) with respect to the specific direction.

[0032] As described above, in this embodiment, the first protection member 5 is a cable carrier including a plurality of link bodies linearly connected to each other so as to be able to swing freely. Therefore, in this embodiment, the swing axis of each link body in the first protection member 5 is arranged to extend in the X direction.

[0033] The second protective member 7 includes a second moving end portion 71 , a second fixed end portion 72 , a second moving-side hanging portion 73 , a second fixed-side hanging portion 74 , and a second connecting portion 75 .

[0034] The second moving end 71 is one of both ends in the extension direction of the second protective member 7. The second moving end 71 is connected to the second lifting body 3. In this embodiment, the second moving end 71 is connected to the second lifting body 3 via a plate-shaped second connecting member 35.

[0035] The second fixed end 72 is the other of the two ends in the extension direction of the second protective member 7. The second fixed end 72 is connected to the support 1 or a second fixing member 12 whose position relative to the support 1 is fixed. In this embodiment, the second fixed end 72 is fixed to the support 1 via the plate-shaped second fixing member 12.

[0036] Second movable-side hanging portion 73 hangs downward from second movable end portion 71. Second fixed-side hanging portion 74 hangs downward from second fixed end portion 72. Second connecting portion 75 bends so as to protrude downward, and connects the lower ends of second movable-side hanging portion 73 and second fixed-side hanging portion 74 to each other.

[0037] As second lifting body 3 moves up and down, the position of second connection portion 75 in the vertical direction Z changes, and the vertical direction Z dimensions of second moving-side hanging portion 73 and second fixed-side hanging portion 74 change. To explain further, when second lifting body 3 moves up, second connection portion 75 moves upward, the vertical direction Z dimension of second moving-side hanging portion 73 increases, and the vertical direction Z dimension of second fixed-side hanging portion 74 decreases. On the other hand, when second lifting body 3 moves down, second connection portion 75 moves downward, the vertical direction Z dimension of second moving-side hanging portion 73 decreases, and the vertical direction Z dimension of second fixed-side hanging portion 74 increases.

[0038] In this embodiment, second protective member 7 is arranged so that second movable-side hanging portion 73 and second fixed-side hanging portion 74 are aligned in the X direction. Second protective member 7 has a structure in which the bending direction of second connecting portion 75 is limited to the direction along the X direction when viewed in the up-down direction. Therefore, in this embodiment, second protective member 7 swings in the X direction due to the elevation and lowering of second lifting body 3, while swinging in the Y direction is limited.

[0039] As described above, in this embodiment, the second protection member 7 is a cable carrier including a plurality of link bodies linearly connected to each other so as to be able to swing freely. Therefore, in this embodiment, the swing axis of each link body in the second protection member 7 is arranged to extend in the Y direction.

[0040] In the following description, for each of the first lifting device 100A and the second lifting device 100B, one side in the X direction is referred to as the "X-direction first side X1" and the other side in the X direction is referred to as the "X-direction second side X2." Furthermore, one side in the Y direction is referred to as the "Y-direction first side Y1" and the other side in the Y direction is referred to as the "Y-direction second side Y2."

[0041] As shown in FIG. 3 , both first movable-side hanging portion 53 and first fixed-side hanging portion 54 are disposed on first side X1 in the X direction with respect to first lifting trajectory T1 and second lifting trajectory T2. First lifting trajectory T1 is the lifting trajectory of first lifting body 2. Second lifting trajectory T2 is the lifting trajectory of second lifting body 3. First lifting trajectory T1 and second lifting trajectory T2 overlap in a vertical view along the vertical direction Z. In this embodiment, first lifting trajectory T1 is the lifting trajectory of first support portion 23, and second lifting trajectory T2 is the lifting trajectory of second support portion 33. First lifting trajectory T1 and second lifting trajectory T2 coincide in a vertical view along the vertical direction Z. Here, with regard to the arrangement of two elements, "overlapping when viewed in a particular direction" means that when a virtual line parallel to the viewing direction is moved in each direction perpendicular to the virtual line, there is at least a partial area where the virtual line intersects with both of the two elements.

[0042] In this embodiment, the support column 1 is disposed on a first side X1 in the X direction relative to the first lifting trajectory T1 and the second lifting trajectory T2. The first protective member 5 is disposed on a first side Y1 in the Y direction relative to the support column 1, and the second protective member 7 is disposed on a second side Y2 in the Y direction relative to the support column 1.

[0043] In the present embodiment, first moving-side hanging portion 53 is disposed on first side Y1 in the Y direction relative to first fixed-side hanging portion 54. In this example, first moving-side hanging portion 53 and first fixed-side hanging portion 54 are disposed side by side and parallel to the Y direction.

[0044] Furthermore, in the present embodiment, second fixed-side hanging portion 74 is disposed on first side X1 in the X direction with respect to first lifting trajectory T1 and second lifting trajectory T2. Second moving-side hanging portion 73 is disposed on first side X1 in the X direction with respect to first lifting trajectory T1 and second lifting trajectory T2, and on second side X2 in the X direction with respect to second fixed-side hanging portion 74. In the present example, second moving-side hanging portion 73 and second fixed-side hanging portion 74 are disposed side by side so as to be parallel to the X direction.

[0045] In this embodiment, second moving-side hanging portion 73 is disposed below first lifting trajectory T1. Therefore, even if second protective member 7 swings in the X direction due to the lifting or lowering of second lifting body 3, the possibility of second protective member 7 interfering with first lifting body 2 can be reduced.

[0046] In this embodiment, the first lifting body 2 is arranged so that the first lifting trajectory T1 is located on the second side Y2 in the Y direction with respect to the storage facility F. The first protective member 5 is arranged on the second side Y2 in the Y direction with respect to the storage facility F. In this example, both the first lifting trajectory T1 and the second lifting trajectory T2 are located on the second side Y2 in the Y direction with respect to the storage facility F.

[0047] In this embodiment, the lifting device 100 further includes a guide member 8. The guide member 8 is formed to extend along the up-down direction Z (see FIGS. 1 and 2). The guide member 8 is disposed between the first protection member 5 and the storage facility F in the Y direction. In this embodiment, the guide member 8 is a plate-shaped member fixed to the storage facility F.

[0048] The guide member 8 has an opposing surface 8a that faces the first protective member 5 from the first side Y1 in the Y direction. The opposing surface 8a is preferably located within a range in the vertical direction Z that corresponds to the range of movement in the vertical direction Z of the first connection part 55 as the first lifting body 2 moves up and down. In this embodiment, the opposing surface 8a is formed continuously in the vertical direction Z.

[0049] In this embodiment, the second lifting body 3 is arranged so that the second lifting trajectory T2 is located on the first side Y1 in the Y direction with respect to a structure S erected on a floor surface (here, the floor surface of an item storage facility). In this example, both the first lifting trajectory T1 and the second lifting trajectory T2 are located on the first side Y1 in the Y direction with respect to the structure S. The structure S is, for example, a storage facility similar to the storage facility F, a walkway along which workers can walk, a transport device that transports the object W to be transported, various manufacturing devices, etc.

[0050] As described above, in this embodiment, the first lifting device 100A and the second lifting device 100B are arranged symmetrically with respect to a plane perpendicular to the X direction. Therefore, as shown in Fig. 4, the first side X1 in the X direction and the second side X2 in the X direction of the second lifting device 100B are opposite to the first side X1 in the X direction and the second side X2 in the X direction of the first lifting device 100A (see Fig. 3).

[0051] Other Embodiments (1) In the above embodiment, the first protective member 5 and the second protective member 7 are each a cable carrier. However, the present invention is not limited to such a configuration. For example, at least one of the first protective member 5 and the second protective member 7 may be a protective sheet that groups multiple cables together in a row. Furthermore, at least one of the first cable 4 and the first protective member 5 and the second cable 6 and the second protective member 7 may be configured as a flat cable. In this case, the covering material of the flat cable corresponds to the first protective member 5 and the second protective member 7.

[0052] (2) In the above embodiment, the first protective member 5 and the second protective member 7 are configured such that the radius of curvature of the bent portion is limited to a specified value. However, the present invention is not limited to such a configuration, and each of the first protective member 5 and the second protective member 7 may be configured to be bent in a V-shape, for example.

[0053] (3) In the above embodiment, the support pillar 1 is erected on the floor of the storage facility. However, the present invention is not limited to such a configuration. For example, the support pillar 1 may be the mast of a stacker crane installed in the storage facility.

[0054] (4) In the above embodiment, an example has been described in which the first fixed end 52 is fixed to the support 1 via the plate-shaped first fixing member 11, and the second fixed end 72 is fixed to the support 1 via the plate-shaped second fixing member 12. However, the present invention is not limited to such a configuration. For example, when the support 1 is erected on the floor, the first fixed member 11 and the second fixed member 12 may each be a shelf, conveyor, or the like fixed to the floor, and the first fixed end 52 may be fixed to the first fixing member 11, and the second fixed end 72 may be fixed to the second fixing member 12.

[0055] (5) In the above embodiment, the first lifting / lowering trajectory T1 and the second lifting / lowering trajectory T2 are aligned in the vertical direction Z. However, the present invention is not limited to such a configuration, and the first lifting / lowering trajectory T1 and the second lifting / lowering trajectory T2 may be shifted in at least one of the X direction and the Y direction so as to partially overlap in the vertical direction Z.

[0056] (6) In the above embodiment, a configuration has been described in which second moving-side hanging portion 73 is disposed on first side X1 in the X direction with respect to second lifting trajectory T2. However, the present invention is not limited to such a configuration, and second moving-side hanging portion 73 may be disposed so as to overlap second lifting trajectory T2 in an up-down direction Z.

[0057] (7) In the above embodiment, second protective member 7 has been described as having a configuration in which second movable-side hanging portion 73 and second fixed-side hanging portion 74 are aligned in the X direction. However, the configuration is not limited to this, and second movable-side hanging portion 73 and second fixed-side hanging portion 74 may be aligned in the Y direction.

[0058] (8) In the above embodiment, the second protective member 7 has a structure in which the bending direction of the second connecting portion 75 is limited to the direction along the X direction when viewed from the up-down direction. However, the present invention is not limited to such a structure. For example, the second protective member 7 may have a structure in which the bending direction of the second connecting portion 75 is not limited and the second protective member 7 can bend in all directions.

[0059] (9) In the above embodiment, a configuration has been described as an example in which first movable-side hanging portion 53 is disposed on first side Y1 in the Y direction relative to first fixed-side hanging portion 54 so that first movable-side hanging portion 53 and first fixed-side hanging portion 54 are parallel to the Y direction. However, the present invention is not limited to such a configuration, and first fixed-side hanging portion 54 may be disposed on either side in the Y direction relative to first movable-side hanging portion 53.

[0060] (10) In the above embodiment, a configuration has been described as an example in which second movable-side hanging portion 73 is disposed on second side X2 in the X direction relative to second fixed-side hanging portion 74 so that second movable-side hanging portion 73 and second fixed-side hanging portion 74 are parallel to the X direction. However, the present invention is not limited to such a configuration, and second fixed-side hanging portion 74 may be disposed on either side in the X direction relative to second movable-side hanging portion 73.

[0061] (11) In the above embodiment, the guide member 8 is fixed to the storage facility F. However, the present invention is not limited to such a configuration, and the guide member 8 may be fixed to the support 1, for example.

[0062] (12) In the above embodiment, the opposing surface 8a of the guide member 8 is described as being continuously formed in the vertical direction Z. However, the present invention is not limited to such a configuration, and the opposing surface 8a may be arranged intermittently in the vertical direction Z.

[0063] (13) The configurations disclosed in the above-described embodiments may be combined with configurations disclosed in other embodiments as long as no contradictions arise. Regarding other configurations, the embodiments disclosed in this specification are merely examples in all respects. Therefore, various modifications may be made as appropriate within the scope of the present disclosure.

[0064] [Summary of this embodiment] The following provides an overview of the lifting device described above.

[0065] The lifting device is Support columns arranged along the vertical direction; a first lifting body that moves up and down along the support; a second lifting body that moves up and down along the support pillar below the first lifting body; a first cable connected to the first lifting body; a first protective member that houses the first cable, the first protective member comprises: a first moving end connected to the first lifting body; a first fixed end connected to the support column or a first fixed member whose position relative to the support column is fixed; a first moving-side hanging portion hanging downward from the first moving end; a first fixed-side hanging portion hanging downward from the first fixed end; and a first connecting portion bent to protrude downward and connecting lower ends of the first moving-side hanging portion and the first fixed-side hanging portion; a first lifting / lowering trajectory that is a lifting / lowering trajectory of the first lifting body and a second lifting / lowering trajectory that is a lifting / lowering trajectory of the second lifting body overlap in an up-down direction, A specific direction along the horizontal direction is defined as an X direction, a direction perpendicular to the X direction when viewed in the up-down direction is defined as a Y direction, and one side of the X direction is defined as an X direction first side, the first protective member has a structure in which the first movable-side hanging portion and the first fixed-side hanging portion are arranged side by side in the Y direction, and a bending direction of the first connection portion is limited to a direction along the Y direction as viewed in the up-down direction, Both the first moving-side hanging portion and the first fixed-side hanging portion are disposed on the first side in the X direction with respect to the first lifting and lowering locus and the second lifting and lowering locus.

[0066] With this configuration, even if the first protective member sways due to the ascent and descent of the first lifting body, the swaying in the X direction is limited, and the first protective member can be prevented from heading toward the ascent and descent trajectory of the second lifting body. Therefore, in a configuration including a first cable connected to the first lifting body and a first protective member that houses the first cable, it is possible to reduce the possibility that the first protective member will interfere with the second lifting body that is below the first lifting body.

[0067] Here, a second cable connected to the second lifting body; a second protection member that houses the second cable, the support column is disposed on a first side in the X direction with respect to the first lifting / lowering trajectory and the second lifting / lowering trajectory, the first protective member is disposed on a first side in the Y direction, which is one side in the Y direction, with respect to the support column; the second protection member is disposed on a second Y-direction side that is the other side in the Y-direction with respect to the support column, the second protective member comprises: a second moving end connected to the second lifting body; a second fixed end connected to the support column or a second fixed member whose position relative to the support column is fixed; a second moving-side hanging portion hanging downward from the second moving end; a second fixed-side hanging portion hanging downward from the second fixed end; and a second connecting portion bent to protrude downward and connecting lower ends of the second moving-side hanging portion and the second fixed-side hanging portion, It is preferable that the second fixed-side hanging portion be disposed on a first side in the X direction with respect to the first lifting / lowering locus and the second lifting / lowering locus.

[0068] With this configuration, the first protective member and the second protective member can be disposed at different positions in the Y direction with the support pillar in between, which makes it easier to simplify the structure for connecting each of the first fixed end portion and the second fixed end portion to the support pillar or a member whose position relative to the support pillar is fixed. Furthermore, with this configuration, the elements required to raise and lower the first and second lifting bodies can be concentrated and arranged on the first side in the X direction with respect to the first and second lifting trajectories, making it easier to efficiently arrange the components of the lifting device and to reduce the size of the lifting device.

[0069] Further, the second lifting body is disposed so that the second lifting locus is located on the first side in the Y direction with respect to a structure erected on a floor surface, It is preferable that the second protective member has a structure in which the second movable-side hanging portion and the second fixed-side hanging portion are arranged side by side in the X direction, and the bending direction of the second connection portion is limited to a direction along the X direction when viewed in the up-down direction.

[0070] With this configuration, even if the second protection member sways due to the rising and falling of the second lifting body, the swaying in the Y direction is limited. Therefore, it is possible to reduce the possibility that the second protection member will sway to the second side in the Y direction and interfere with a structure erected on the floor surface.

[0071] Further, each of the first lifting body and the second lifting body is configured to lift and transport an object to be transported, the first lifting body is disposed so that the first lifting trajectory is located on the second side in the Y direction with respect to a storage facility that stores the plurality of transport objects; The first protective member is disposed on the second side in the Y direction with respect to the storage facility, It is preferable that the storage facility further comprises a guide member that is arranged to extend along the vertical direction between the first protective member and the storage facility in the Y direction, and that has an opposing surface that faces the first protective member from the first side in the Y direction.

[0072] With this configuration, even if the first protective member swings toward the first side in the Y direction due to the ascent and descent of the first lifting body, the opposing surface of the guide member disposed between the first protective member and the storage facility in the Y direction can prevent the first protective member from heading toward the ascent and descent trajectory of the second lifting body. Therefore, the possibility of the first protective member interfering with the storage facility can be reduced. [Industrial Applicability]

[0073] The technology disclosed herein can be used in an elevator device that includes a support pillar arranged in the vertical direction, a first elevator body that moves up and down along the support pillar, and a second elevator body that moves up and down along the support pillar below the first elevator body. [Explanation of symbols]

[0074] 100: Lifting device 1: Strut 11: First fixing member 12: Second fixing member 2: First lifting body 3: Second lifting body 4: First cable 5: First protective member 51: 1st moving end 52: 1st fixed end 53: 1st moving side hanging part 54: 1st fixed side hanging part 55: First connection part 6: Second cable 7: Second protective member 71: 2nd moving end 72:Second fixed end 73: 2nd moving side hanging part 74: 2nd fixed side hanging part 75: Second connection part 8: Guide member 8a: Opposing surface F:Storage equipment S: Structure W: Object to be conveyed X :X direction X1: 1st side in X direction X2: 2nd side in X direction Y: Y direction Y1: Y-direction first side Y2: Y-direction second side Z: Vertical direction

Claims

1. Support columns arranged along the vertical direction; a first lifting body that moves up and down along the support; a second lifting body that moves up and down along the support column below the first lifting body; a first cable connected to the first lifting body; a first protective member that houses the first cable, the first protective member comprises: a first moving end connected to the first lifting body; a first fixed end connected to the support column or a first fixed member whose position relative to the support column is fixed; a first moving-side hanging portion hanging downward from the first moving end; a first fixed-side hanging portion hanging downward from the first fixed end; and a first connecting portion bent to protrude downward and connecting lower ends of the first moving-side hanging portion and the first fixed-side hanging portion, a first lifting / lowering trajectory that is a lifting / lowering trajectory of the first lifting body and a second lifting / lowering trajectory that is a lifting / lowering trajectory of the second lifting body overlap with each other when viewed in the up-down direction, A specific direction along the horizontal direction is defined as an X direction, a direction perpendicular to the X direction when viewed in the up-down direction is defined as a Y direction, and one side of the X direction is defined as an X direction first side, the first protective member has a structure in which the first moving-side hanging portion and the first fixed-side hanging portion are arranged side by side in the Y direction, and a bending direction of the first connection portion is limited to a direction along the Y direction as viewed in the up-down direction, an elevating device, wherein both the first movable-side hanging portion and the first fixed-side hanging portion are disposed on a first side in the X direction with respect to the first elevating locus and the second elevating locus.

2. a second cable connected to the second lifting body; a second protection member that houses the second cable, the support column is disposed on a first side in the X direction with respect to the first lifting / lowering trajectory and the second lifting / lowering trajectory, the first protective member is disposed on a first side in the Y direction, which is one side in the Y direction, with respect to the support column; the second protection member is disposed on a second Y-direction side, which is the other side in the Y-direction, with respect to the support column; the second protective member comprises: a second moving end connected to the second lifting body; a second fixed end connected to the support column or a second fixed member whose position relative to the support column is fixed; a second moving-side hanging portion hanging downward from the second moving end; a second fixed-side hanging portion hanging downward from the second fixed end; and a second connecting portion bent to protrude downward and connecting lower ends of the second moving-side hanging portion and the second fixed-side hanging portion, The lifting device according to claim 1 , wherein the second fixed-side hanging portion is disposed on a first side in the X direction with respect to the first lifting locus and the second lifting locus.

3. the second lifting body is disposed so that the second lifting locus is located on the first side in the Y direction with respect to a structure erected on a floor surface, 3. The lifting device of claim 2, wherein the second protective member is arranged so that the second movable-side hanging portion and the second fixed-side hanging portion are aligned in the X direction, and the bending direction of the second connection portion is limited to a direction along the X direction when viewed in the up-down direction.

4. each of the first lifting body and the second lifting body is configured to lift and transport an object to be transported; the first lifting body is disposed so that the first lifting trajectory is located on the second side in the Y direction with respect to a storage facility that stores the plurality of transport objects; The first protective member is disposed on the second side in the Y direction with respect to the storage facility, A lifting device as described in claim 2 or 3, further comprising a guide member arranged to extend along the vertical direction between the first protective member and the storage facility in the Y direction, and having an opposing surface facing the first protective member from the first side in the Y direction.

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