Vibration control stopper and rack for automatic storage

Abstract

To provide excellent installability by enabling application for any size of a goods receiving member and facilitating construction on an existing rack.SOLUTION: A vibration control stopper 1 includes: a lock member 2 which has a lock part 21 for a load; a first connection member 30 which is connected to a goods receiving member 66; and a viscoelastic body 32 which is interposed between the lock member 2 and first connection member 30, and has shear deformation as the lock member 2 and first connection member 30 move forward and backward relatively. Then the first connection member 30 can be attached on an outer side face 67 of the goods receiving member 66, and has the first connection member 30, viscoelastic body 32 and lock member 2 stacked in a right-left direction with the first connection member 30 attached on the outer side face 67, and the lock part 21 protrudes upward above the goods receiving member 66.SELECTED DRAWING: Figure 1

Description

[Technical Field]

[0001] The present disclosure relates to a vibration-damping stopper provided on a shelf portion of a rack in an automated warehouse to prevent cargo from falling, and to a rack in an automated warehouse provided with the vibration-damping stopper. [Background technology]

[0002] In the racks of an automated warehouse, multiple support columns are arranged at predetermined intervals in the left-right direction, which is the horizontal direction along the path of the stacker crane, and two rows of the support columns are arranged in the front-to-back direction, which is perpendicular to the left-to-right direction. These support columns support multiple shelf sections in the up-down and left-to-right directions. Each shelf section is formed by a support member supported horizontally in the left-to-right direction by the support column and a cylindrical cargo-receiving member supported horizontally in the front-to-back direction by the support member, and cargo can be placed on and removed from the top surface of the shelf section from the front-to-back direction by the stacker crane. The shelf is provided with a vibration-damping stopper to prevent the load from falling due to an earthquake or the like. Patent Document 1, for example, discloses a vibration-damping stopper structure that includes a base member provided within the end of a load-receiving member made of a steel pipe, a protruding member facing the base member within the end of the load-receiving member, and a viscoelastic body interposed between the base member and the protruding member and bonded to both members. In this structure, the protruding member has a protruding portion that protrudes from the load-receiving member and extends upward. When the load moves back and forth in an earthquake or the like, it collides with the protruding portion of the protruding member, causing shear deformation of the viscoelastic body, thereby damping the swaying of the load and preventing it from falling. [Prior art documents] [Patent documents]

[0003] [Patent Document 1] Japanese Patent Application Laid-Open No. 2013-220941 Summary of the Invention [Problem to be solved by the invention]

[0004] The vibration-damping stopper disclosed in Patent Document 1 is fixed inside the load-receiving member by screwing a nut onto a screw member that penetrates the base member and pressing the protruding member against the load-receiving member. For this reason, it can only be applied to load-receiving members of a specific size that can accommodate the vibration-damping stopper, which has problems with versatility. Furthermore, when retrofitting it to the shelf of an existing rack, installation can be difficult due to factors such as the load getting in the way.

[0005] Therefore, the present disclosure aims to provide a vibration-damping stopper and an automated warehouse rack that can be applied regardless of the size of the cargo receiving member, can be easily installed on existing racks, and has excellent installation properties. [Means for solving the problem]

[0006] In order to achieve the above object, a first configuration of the present disclosure is a vibration-damping stopper that is attached to a cylindrical cargo receiving member that forms a shelf portion of a rack in an automated warehouse and extends horizontally in a front-to-rear direction, which is a direction in which cargo is loaded and unloaded, and that prevents cargo from falling in the front-to-rear direction from the shelf portion, The device includes at least a locking member having a locking portion for engaging with a cargo, a connecting member connected to a cargo receiving member, and a viscoelastic body interposed between the locking member and the connecting member, which is shear deformed by relative movement in the front-to-rear direction between the locking member and the connecting member, The connecting member can be attached to the inner or outer surface of the cargo receiving member, and when the connecting member is attached to the inner or outer surface, the connecting member, the viscoelastic body, and the locking member are stacked in the left-right direction, and the locking portion protrudes above the cargo receiving member. Another aspect of the first configuration is that, in the above configuration, the locking portion has a shape that is symmetrical in the up-down direction. Another aspect of the first configuration is characterized in that, in the above configuration, the connecting member can be attached to the outer surface of the cargo receiving member, and when attached to the outer surface, the connecting member, the viscoelastic body, and the locking member are stacked in the left-right direction outside the cargo receiving member. Another aspect of the first configuration is characterized in that, in the above configuration, a second connecting member is interposed between the viscoelastic body and the locking member, and the connecting member, the viscoelastic body, the second connecting member, and the locking member are stacked in the left-right direction with the connecting member attached to the inner surface or the outer surface. Another aspect of the first configuration is characterized in that, in the above configuration, the connecting member is attached to the inner surface of the cargo receiving member, and the connecting member, the viscoelastic body, and the locking member are stacked in the left-right direction inside the cargo receiving member. Another aspect of the first configuration is characterized in that, in the above configuration, the locking member abuts or is close to the upper inner surface and / or the lower inner surface of the cargo receiving member and has a guide portion that slides against the upper inner surface and / or the lower inner surface as the viscoelastic body is sheared in the fore-and-aft direction. In order to achieve the above object, a second configuration of the present disclosure is a vibration-damping stopper that is attached to a cylindrical cargo receiving member that forms a shelf portion of a rack in an automated warehouse and extends horizontally in a front-to-rear direction, which is a direction in which cargo is loaded and unloaded, and that prevents cargo from falling in the front-to-rear direction from the shelf portion, The device includes at least a locking member having a locking portion for engaging with a cargo, a connecting member connected to a cargo receiving member, and a viscoelastic body interposed between the locking member and the connecting member, which is shear deformed by relative movement in the front-to-rear direction between the locking member and the connecting member, The connecting member can be attached to the inner or outer surface of the cargo receiving member, and when the connecting member is attached to the inner or outer surface, the connecting member, the viscoelastic body, and the locking member are stacked in the vertical direction, and the locking portion protrudes above the cargo receiving member. Another aspect of the second configuration is that, in the above configuration, the locking portion has a shape that is symmetrical in the left-right direction. Another aspect of the second configuration is characterized in that, in the above configuration, the connecting member can be attached to the outer surface of the cargo receiving member, and when attached to the outer surface, the connecting member, the viscoelastic body, and the locking member are stacked in the vertical direction outside the cargo receiving member. Another aspect of the second configuration is that, in the above configuration, the connecting member has a U-shaped cross section consisting of a vertical connecting portion that can be attached to the outer surface of the cargo receiving member and upper and lower horizontal connecting portions that are connected to the upper and lower ends of the vertical connecting portion, and the second connecting member, viscoelastic body, and locking member are stacked in the vertical direction in the lower horizontal connecting portion, and the upper horizontal connecting portion is close to or abuts the upper surface of the locking member. Another aspect of the second configuration is characterized in that, in the above configuration, the connecting member can be attached to the inner surface of the cargo receiving member, and when attached to the inner surface, the connecting member, the viscoelastic body, and the locking member are stacked vertically inside the cargo receiving member. In order to achieve the above object, a third configuration of the present disclosure is a rack for an automated warehouse in which a plurality of shelf sections are arranged in the left-right direction, which is the horizontal direction along the path of a stacker crane, and in the up-down direction, and each shelf section is formed to include a cylindrical cargo receiving member that extends horizontally in the front-to-rear direction, which is the direction in which cargo is put in and taken out, The vibration-damping stopper according to either the first or second configuration is attached to the load-receiving member of each shelf section. [Effects of the Invention]

[0007] The vibration-damping stopper and automated warehouse rack disclosed herein, in which the connecting member is attached to the inner or outer surface of the load-receiving member, can be attached to load-receiving members of different sizes, providing excellent versatility. Furthermore, even when retrofitting the stopper to the shelf of an existing rack, the load does not get in the way. Therefore, the stopper can be applied regardless of the size of the load-receiving member, can be easily installed on existing racks, and is easy to install. Furthermore, the stopper can effectively prevent loads from falling from the shelf. In addition to the above-mentioned effects, the vibration-damping stopper of another aspect of the first configuration has a vertically symmetrical shape, so that the vibration-damping stopper can be attached to either the left or right side of the load-receiving member. This increases the degree of freedom in attachment to the rack, and improves installation. Of course, the stopper function can be maintained regardless of whether it is attached to the left or right side. According to another aspect of the vibration-damping stopper of the first configuration, in addition to the above effects, the connecting member can be attached to the outer surface of the cargo receiving member, and when attached to the outer surface, the connecting member, viscoelastic body, and locking member are stacked in the left-right direction outside the cargo receiving member, making it easier to install the vibration-damping stopper outside the cargo receiving member. According to another aspect of the vibration-damping stopper of the first configuration, in addition to the above effects, a second connecting member is interposed between the viscoelastic body and the locking member, and with the connecting member attached to the inner or outer surface, the connecting member, viscoelastic body, second connecting member, and locking member are stacked in the left-right direction.Therefore, if the connecting member, viscoelastic body, and second connecting member are prepared in advance as a vibration-damping unit, the vibration-damping stopper can be easily installed at the installation site by attaching the connecting member to the cargo receiving member and attaching the locking member to the second connecting member. In addition to the above-mentioned effects, according to another aspect of the vibration-damping stopper of the first configuration, the connecting member is attached to the inner surface of the load-receiving member, and the connecting member, viscoelastic body, and locking member are stacked in the left-right direction inside the load-receiving member, which not only saves space but also protects the vibration-damping stopper from external factors, particularly reducing deterioration of the viscoelastic body due to light and ozone. According to another aspect of the vibration-damping stopper of the first configuration, in addition to the above-mentioned effects, the locking member is provided with a guide portion that is in close proximity to or in contact with the upper and / or lower inner surface of the load-receiving member and slides against the upper and / or lower inner surface as the viscoelastic body is subjected to shear deformation in the front-to-rear direction, thereby suppressing tilting of the locking member when it is displaced and restricting deformation of the viscoelastic body in the up-and-down direction, thereby maintaining the required damping performance. In addition to the above effects, with another aspect of the vibration-damping stopper of the second configuration, the locking portion has a shape that is symmetrical in the left-right direction, so the vibration-damping stopper can be attached to either the left or right side of the load-receiving member. If the front and back are reversed, it can be attached to either the front or back end of the load-receiving member. This increases the degree of freedom in attachment to the rack, further improving installation. Of course, the stopper function can be maintained regardless of whether it is attached to the left or right side. According to another aspect of the vibration-damping stopper of the second configuration, in addition to the above-mentioned effects, the connecting member can be attached to the outer surface of the cargo receiving member, and when attached to the outer surface, the connecting member, viscoelastic body, and locking member are stacked in the vertical direction outside the cargo receiving member, so that the connecting member can be attached to any location in the longitudinal direction of the cargo receiving member, such as the middle part. Therefore, even when multiple loads are placed lined up in the front-to-rear direction on the load receiving member, a vibration-damping stopper can be provided for each load. According to another aspect of the vibration-damping stopper of the second configuration, in addition to the above effects, the connecting member can be attached to the inner surface of the cargo-receiving member, and when attached to the inner surface, the connecting member, viscoelastic body, and locking member are stacked in the vertical direction, which not only saves space but also protects the vibration-damping stopper from external factors and reduces deterioration of the viscoelastic body due to light and ozone. According to another aspect of the vibration-damping stopper of the second configuration, in addition to the above effects, the connecting member has a U-shaped cross section, and the second connecting member, viscoelastic body, and locking member are stacked in the vertical direction at the lower horizontal connecting portion, and the upper horizontal connecting portion is close to or abuts the upper surface of the locking member, so that the upper horizontal connecting portion prevents the locking portion from shifting downward, thereby reliably restricting the movement of the cargo. [Brief explanation of the drawings]

[0008] [Figure 1] 1A and 1B are explanatory diagrams of the vibration-damping stopper of Form 1, in which (A) shows the front, (B) shows the top view, and (C) shows the side view. [Figure 2] FIG. 1 is a side view of a rack in an automated warehouse to which a vibration-damping stopper of the first embodiment is attached. [Figure 3] FIG. 1 is a plan view of a rack in an automated warehouse to which a vibration-damping stopper of the first embodiment is attached. [Figure 4] 10A, 10B, and 10C are explanatory diagrams of a modified example in which a guide member is provided in the vibration-damping stopper of form 1, where (A) shows the front, (B) shows the top, and (C) shows the side. [Figure 5] 10A, 10B, and 10C are explanatory diagrams of a modified example in which a bolt is provided as a guide member in the vibration-damping stopper of form 1, where (A) shows the front, (B) shows the top view, and (C) shows the side view. [Figure 6]1A and 1B are explanatory diagrams of the vibration-damping stopper of Form 2, in which (A) shows the front, (B) shows the top view, and (C) shows the side view. [Figure 7] 1A and 1B are explanatory diagrams of the vibration-damping stopper of Form 3, in which (A) shows the front, (B) shows the top, and (C) shows the side. [Figure 8] 10A and 10B are explanatory views showing a state in which the vibration-damping stopper of form 3 is attached to a shelf part, where (A) is a plan view and (B) is a view seen from the arrow A in (A). [Figure 9] 10A, 10B, and 10C are explanatory views of a vibration-damping stopper according to a modified example of the third embodiment, in which (A) shows the front, (B) shows a plan view, and (C) shows a side view. DETAILED DESCRIPTION OF THE INVENTION

[0009] Hereinafter, embodiments of the present disclosure will be described with reference to the drawings. [Form 1] FIG. 1 is an explanatory diagram showing an example of a vibration-damping stopper according to the first configuration, where (A) shows a front view, (B) shows a plan view, and (C) shows a side view. The vibration-damping stopper 1 includes a locking member 2 and a vibration-damping unit 3. The vibration-damping stopper 1 is attached to a load-receiving member 66 that forms a shelf 64 on which loads are placed, in a rack 60 of an automated warehouse shown in Figures 2 and 3. Figure 1 shows the state in which the vibration-damping stopper 1 is attached to the load-receiving member 66. The cargo receiving member 66 is a cylindrical square steel pipe that is arranged horizontally in the front-to-rear direction so that cargo can be loaded and unloaded. For convenience, the upper side of Fig. 1(A) is defined as the top, and the left side of Fig. 1(B) is defined as the front, and left and right are defined as viewed from the cargo receiving member 66. This also applies to other embodiments and modified examples.

[0010] The locking member 2 is a metal strip extending in the front-to-rear direction parallel to the outer surface 67 of the right-hand side of the receiving member 66. The locking member 2 has a vertical width approximately half the vertical height of the receiving member 66, but its front portion tapers forward to form a wide portion 20 whose vertical width is slightly smaller than the vertical height of the receiving member 66. The wide portion 20 is bent at a right angle to the left in front of the receiving member 66 to form a locking portion 21 at its front end. The locking portion 21 overlaps the receiving member 66 in the front-to-rear direction and has a vertically elongated rectangular shape in front view that is larger in vertical dimension than the receiving member 66. The locking portion 21 is symmetrical about the vertical center of the locking member 2. The locking member 2 has through holes 22, 22 for rivet fastening formed at a predetermined interval in the front-to-rear direction.

[0011] The vibration damping unit 3 has a first connecting member 30, a second connecting member 31, and a viscoelastic body 32. The first connecting member 30 is a metal strip having the same vertical width and horizontal thickness as the locking member 2 excluding the wide portion 20, and is attached to the outer surface 67 of the cargo receiving member 66. The attachment position is the vertical center of the outer surface 67, i.e., the position where the vertical center line of the first connecting member 30 coincides with the vertical center line of the outer surface 67. The first connecting member 30 is an example of a connecting member of the present disclosure. Through holes 33, 33 for riveting are also formed at a predetermined interval in the front-rear direction in the first connecting member 30. The front-rear interval between the through holes 33, 33 is wider than the front-rear interval between the through holes 22, 22. The second connecting member 31 is a metal strip having the same vertical width as the first connecting member 30, and is attached to the left side surface of the locking member 2 at a position spaced a predetermined distance outward and to the right from the first connecting member 30. The second connecting member 31 is formed so that its dimension in the front-to-rear direction is shorter than that of the first connecting member 30, and its left-to-right thickness is also smaller than that of the first connecting member 30. The second connecting member 31 is an example of a second connecting member of the present disclosure. At both ends of the second connecting member 31 in the front-rear direction, through holes 34, 34 for rivet fastening are formed at the same front-rear interval as the through holes 22, 22 of the locking member 2.

[0012] The viscoelastic body 32 is interposed between the first connecting member 30 and the second connecting member 31 with the same vertical width as the first connecting member 30 and the second connecting member 31, and is adhered to both connecting members 30 and 31. The viscoelastic body 32 has a greater left-right thickness than the connecting members 30 and 31, and its length in the front-rear direction is shorter than the front-rear distance between the through holes 34 of the second connecting member 31. The viscoelastic body 32 is formed from, for example, a rubber composition, and can attenuate vibration energy by shear deformation in the front-rear direction.

[0013] In the vibration-damping stopper 1 constructed as described above, the locking member 2 and the vibration-damping unit 3 are separately manufactured, and then joined together and attached to the load-receiving member 66 at the construction site. The outer surface 67 of the load receiving member 66 is also provided with through holes 68, 68 for rivet fastening, spaced apart from each other in the same longitudinal direction as the through holes 33, 33 of the first connecting member 30. First, the first connecting member 30 of the vibration damping unit 3 is positioned by aligning the through holes 33 with the through holes 68 in the outer surface 67, and then connected to the outer surface 67 with two inner rivets 4 that pass through the through holes 33 and 68, respectively. Then, the vibration damping unit 3 is fixed in a horizontal position with the second connecting member 31 on the outermost side.

[0014] Next, the locking member 2 with the locking portion 21 facing left is positioned on the right side of the second connecting member 31 with the through holes 22, 22 aligned with the through holes 34, 34, and connected to the second connecting member 31 with two outer rivets 5, 5 that are passed through the through holes 22, 22 and the through holes 34, 34, respectively. Note that the first connecting member 30 has relief holes 35, 35 formed in it to prevent interference with the outer rivets 5, 5 when connecting with the outer rivets 5, 5. 1, the vibration-damping stopper 1 is attached to the outer surface 67 of the goods receiving member 66 with the first connecting member 30, the viscoelastic body 32, the second connecting member 31, and the locking member 2 stacked in the left-right direction. In this state, the locking portion 21 of the locking member 2 faces the front end face of the goods receiving member 66 in a non-contact position spaced a predetermined distance from the front end face of the goods receiving member 66, with the upper and lower ends protruding above and below the goods receiving member 66, respectively.

[0015] Fig. 2 is a side view showing an example of a rack in an automated warehouse according to the third configuration, and Fig. 3 is a plan view of the rack. The X direction shown in Figs. 2 and 3 is the front-rear direction, and the Y direction shown in Fig. 3 is the left-right direction. First, a stacker crane 50 is provided on floor surface FL, which is movable along left-right guide rails 51 that serve as a path. Stacker crane 50 includes a traveling carriage 52 that can run on guide rails 51, a mast 53 that stands on traveling carriage 52, a lifting platform 54 that moves up and down along mast 53, and forks 55 that are provided on lifting platform 54. The stacker crane 50 automatically controls its movement to the target shelf 64 on the rack 60 described below and the raising and lowering of the lifting platform 54, and the forks 55 enable the loading and unloading of a pallet P carrying cargo W onto the shelf 64. The racks 60, 60 are arranged in pair at the front and rear of the stacker crane 50. Each rack 60 has a plurality of support columns 61, 61..., a plurality of vertical braces 62, 62..., a plurality of horizontal braces 63, 63..., and a plurality of shelf portions 64, 64.... The columns 61 are arranged in two rows at a predetermined interval in the front-to-back direction, with multiple columns erected at a predetermined interval in the left-to-right direction. The vertical braces 62 are erected in a zigzag pattern in the up-and-down direction between the front and rear columns 61, 61. The horizontal braces 63 are erected in a zigzag pattern in the horizontal direction between the front and rear columns.

[0016] Each shelf 64 includes a pair of support members 65 and a pair of load-receiving members 66. The support members 65 extend horizontally in the left-right direction and are fixed to a pair of support posts 61 facing each other in the front and rear. The load-receiving members 66 extend horizontally in the front-rear direction and are installed between both ends of the front and rear support members 65. Therefore, each shelf 64 is formed in the shape of a square frame in plan view between a pair of front and rear support columns 61, 61. In the space surrounded by the four support columns 61, 61 arranged in this manner on the front, rear, left and right, a pallet P carrying a load W can be supported across the left and right shelf sections 64, 64. Here, vibration-damping stoppers 1 are attached facing backwards to the front and rear ends of each load-receiving member 66 on the outer surfaces to which the support members 65 are not connected. In this state, the locking portions 21 protruding from the top surface at the front and rear of each load-receiving member 66 are positioned at the front and rear of the pallet P.

[0017] Therefore, when an earthquake or the like causes the rack 60 to shake and the pallet P on the shelf 64 moves back and forth together with the load W, the locking portion 21 abuts against the pallet P, acting as a stopper that restricts further forward and backward movement. When the shelf 64 swings back and forth and the pallet P repeatedly moves back and forth, the pallet P intermittently abuts against the locking portion 21, causing the locking member 2 to repeatedly displace back and forth. Then, each time the locking member 2 displaces, the viscoelastic body 32 undergoes shear deformation, converting collision energy into thermal energy and damping the vibration. Therefore, the load W can be effectively prevented from falling off the shelf 64. At this time, the locking portion 21 faces the front end surface of the load-receiving member 66, and when the locking portion 21 abuts against the front end surface as the locking member 2 is displaced, further tilting of the locking member 2 is suppressed. Thus, the vertical deformation of the viscoelastic body 32 is restricted.

[0018] Thus, the vibration-damping stopper 1 of the above-mentioned form 1 includes a locking member 2 having an locking portion 21 for locking onto the cargo W, a first connecting member 30 connected to the cargo receiving member 66, and a viscoelastic body 32 interposed between the locking member 2 and the first connecting member 30 and which is shear deformed by relative movement in the forward and backward directions between the locking member 2 and the first connecting member 30. The first connecting member 30 can be attached to the outer surface 67 of the cargo receiving member 66, and when the first connecting member 30 is attached to the outer surface 67, the first connecting member 30, the viscoelastic body 32, and the locking member 2 are stacked in the left-right direction, and the locking portion 21 protrudes upward beyond the cargo receiving member 66. According to this configuration, since the first connecting member 30 is attached to the outer surface 67 of the load receiving member 66, it can be attached even if the size of the load receiving member 66 is different, and it is highly versatile. Furthermore, even when it is retrofitted to the shelf portion 64 of an existing rack 60, the load W does not get in the way. Therefore, it can be applied regardless of the size of the load receiving member 66, can be easily constructed on an existing rack 60, and is easy to install.

[0019] The rack 60 of the automated warehouse of the above configuration has a plurality of shelf sections 64 arranged in the left-right direction, which is the horizontal direction along the path of the stacker crane, and in the up-down direction, and each shelf section 64 is formed to include a pair of left and right cylindrical cargo receiving members 66, 66 that extend horizontally in the front-to-back direction, which is the direction in which cargo W is loaded and unloaded, and the vibration-damping stoppers 1 are attached to the front and back ends of the left and right cargo receiving members 66, 66 of each shelf section 64, respectively. According to this configuration, each vibration-damping stopper 1 can effectively prevent the load W from falling off the shelf portion 64.

[0020] In particular, because the locking portion 21 of the vibration-damping stopper 1 has a shape that is symmetrical in the vertical direction, the vibration-damping stopper 1 can be attached to either the left or right side of the cargo receiving member 66. This increases the degree of freedom in attachment to the rack 60, further improving installation ease. Of course, the stopper function can be maintained regardless of whether it is attached to the left or right side. The first connecting member 30 is attached to the outer surface 67 outside the goods receiving member 66, and the first connecting member 30, the viscoelastic body 32, and the locking member 2 are stacked in the left-right direction outside the goods receiving member 66. Therefore, the vibration-damping stopper 1 can be easily installed outside the load-receiving member 66. A second connecting member 31 is interposed between the viscoelastic body 32 and the locking member 2, and with the first connecting member 30 attached to the outer surface 67, the first connecting member 30, the viscoelastic body 32, the second connecting member 31, and the locking member 2 are stacked in the left-right direction. Therefore, if the first connecting member 30, the viscoelastic body 32, and the second connecting member 31 are prepared in advance as the vibration control unit 3, the vibration control stopper 1 can be easily installed at the construction site by attaching the first connecting member 30 to the cargo receiving member 66 and attaching the locking member 2 to the second connecting member 31.

[0021] The following describes a modified example of the vibration-damping stopper of embodiment 1. However, the same components as those of embodiment 1 are given the same reference numerals, and redundant explanations will be omitted. 4 shows an example of a vibration-damping stopper 1 in which a guide member 6 is provided on the locking portion 21 of the locking member 2. This guide member 6 is inverted L-shaped in side view, and one end 6a is fixed to the back surface of the locking portion 21 with a rivet 7, so that the other end 6b protrudes into the load-receiving member 66. In this state, the upper surface of the other end 6b is close to the upper inner surface of the load-receiving member 66. The guide member 6 is an example of a guide portion of the present disclosure. Therefore, even if a force is applied to the locking member 2 to rotate it on a plane defined by the front-rear and up-down directions when the locking member 2 is displaced forward and backward, the other end 6b of the guide member 6 abuts against the upper inner surface of the goods receiving member 66, restricting the rotation and guiding the forward and backward movement of the locking member 2. Therefore, combined with the action of the locking portion 21 abutting against the front end face of the goods receiving member 66, the deformation of the viscoelastic body 32 in the up-down direction is more effectively restricted.

[0022] In this way, the locking member 2 is provided with the guide member 6, which is located close to the upper inner surface of the load-receiving member 66 and slides against the upper inner surface as the viscoelastic body 32 undergoes shear deformation in the front-to-rear direction, thereby suppressing the inclination of the locking member 2 when it is displaced and restricting the vertical deformation of the viscoelastic body 32. This makes it possible to maintain the necessary damping performance. The guide member can be modified as needed, for example by widening the left-right width or lengthening the front-to-back length. A plate-shaped guide member, rather than an L-shaped one, can be pre-connected to the locking portion, or a portion of the locking portion can be bent backward to form a guide member that is inserted into the cargo receiving member. There can be multiple guide members. Guide members can be provided above and below, and placed close to the lower inner surface of the cargo receiving member. The guide member may abut against the inner surface of the load-receiving member.

[0023] 5 shows an example of a vibration-damping stopper 1 in which a bolt 8 is provided as a guide in the locking portion 21. This bolt 8 is threaded into the locking portion 21 from the front and protrudes into the inside of the load-receiving member 66. In this state, the top surface of the bolt 8 is close to the upper inner surface of the load-receiving member 66. Therefore, even if a force is applied to the locking member 2 to rotate it on a plane defined by the front-to-back and up-to-down directions when the locking member 2 is displaced forward and backward, the bolt 8 abuts against the upper inner surface of the load-receiving member 66, restricting the rotation and guiding the forward and backward movement of the locking member 2. Therefore, combined with the action of the locking portion 21 abutting against the front end face of the load-receiving member 66, the vertical deformation of the viscoelastic body 32 is more effectively restricted. In this way, the locking member 2 is provided with the bolt 8, which is located close to the upper inner surface of the load-receiving member 66 and slides against the upper inner surface as the viscoelastic body 32 is subjected to shear deformation in the front-to-rear direction, thereby suppressing the tilt of the locking member 2 when it is displaced and restricting the vertical deformation of the viscoelastic body 32. This makes it possible to maintain the necessary damping performance. A plurality of bolts may be provided. In this case, the bolts may be arranged side by side, or the bolts may be provided above and below and placed close to the lower inner surface of the cargo receiving member. The bolt may abut against the inner surface of the load-receiving member.

[0024] In the first embodiment and its modifications, the shapes of the components and the locking portions can be modified as needed. The locking portions do not need to be symmetrical from top to bottom. The locking portions may be formed separately and connected to the locking members. The attachment of the first connecting member to the cargo receiving member is not limited to riveting, but may be bolting, welding, etc. If on-site attachment is possible, the second connecting member may be omitted and the viscoelastic body may be directly adhered to the locking member. The vibration-damping stopper can be attached not only to the outer surface of the right side of the cargo receiving member, but also to the outer surface of the left side. If the locking portion is symmetrical in shape, the locking portion will protrude from the top surface of the cargo receiving member even when the vibration-damping stopper is attached to the outer surface of the left side of the cargo receiving member. However, the locking portion does not have to be symmetrical in shape.

[0025] [Form 2] In the above-mentioned first embodiment, an example is shown in which the vibration-damping stopper is attached to the outer surface of the load-receiving member, but the vibration-damping stopper may also be attached to the inner surface of the load-receiving member. 6 shows an example of this, in which the vibration-damping stopper 1A is housed inside a load receiving member 66, excluding the locking portion 21. The first connecting member 30 is attached to the inside surface 69 on the left side of the load receiving member 66. In this example, the second connecting member is not used, and a viscoelastic body 32 is bonded between the locking member 2 housed inside the load receiving member 66, excluding the locking portion 21, and the first connecting member 30. Further, the wide portion 20a at the front of the locking member 2 is formed with a vertical width that fits within the cargo receiving member 66, with its upper and lower ends positioned close to the upper and lower inner surfaces of the cargo receiving member 66. Here, a wide portion 20b is also formed at the rear of the locking member 2, which is symmetrical to the wide portion 20a in the front-to-back direction, with its upper and lower ends positioned close to the upper and lower inner surfaces of the cargo receiving member 66. These wide portions 20a and 20b are examples of the guide portion of the present disclosure. The locking portion 21 is formed by bending the front end of the wide portion 20a to the left and is symmetrical from top to bottom.

[0026] In this vibration-damping stopper 1A, the locking member 2 and the first connecting member 30 are bonded in advance with a viscoelastic body 32, and the first connecting member 30 is attached to the load-receiving member 66 at the construction site. In the inner surface 69 of the load receiving member 66, through holes 70, 70 for rivet fastening are formed at the same front-to-rear intervals as the through holes 33, 33 of the first connecting member 30. Therefore, the vibration-damping stopper 1A is inserted into the cargo receiving member 66 with the first connecting member 30 on the left side and the locking member 2 on the right side, and positioned by aligning the through holes 33, 33 with the through holes 70, 70 on the inner surface 69, and then connected to the inner surface 69 by two rivets 7, 7 that are passed through the through holes 33, 33 and the through holes 70, 70, respectively. 6, the vibration-damping stopper 1A is attached to the inner surface 69 of the goods receiving member 66 with the first connecting member 30, viscoelastic body 32, and locking member 2 stacked in the left-right direction. In this state, the locking portion 21 of the locking member 2 is in a non-contact position at a predetermined distance from the front end of the goods receiving member 66, with the upper and lower ends protruding above and below the goods receiving member 66. In addition, the upper and lower end faces of the front and rear wide portions 20a, 20b of the locking member 2 are close to the upper and lower inner surfaces of the goods receiving member 66, respectively.

[0027] Therefore, when the rack 60, which has vibration-damping stoppers 1A attached to each load-receiving member 66, vibrates and the pallet P on the shelf 64 moves back and forth together with the load W, the locking portions 21 come into contact with the pallet P, acting as a stopper that restricts further forward and backward movement. As the shelf 64 swings back and forth and the pallet P repeatedly moves back and forth, the pallet P intermittently comes into contact with the locking portions 21, causing the locking members 2 to repeatedly displace back and forth. Each time the locking members 2 displace, the viscoelastic body 32 undergoes shear deformation, converting collision energy into thermal energy and damping the vibration. This effectively prevents the load W from falling off the shelf 64. In particular, when the locking member 2 is displaced forward and backward, even if a force is applied that causes it to rotate on a plane defined by the front, back, top, and bottom, the wide portions 20a, 20b come into contact with the upper or lower inner surface of the load-receiving member 66, restricting the rotation and guiding the forward and backward movement of the locking member 2. Therefore, combined with the action of the locking portion 21 when it comes into contact with the front end surface of the load-receiving member 66, the vertical deformation of the viscoelastic body 32 is more effectively restricted.

[0028] According to this vibration-damping stopper 1A, the first connecting member 30 is attached to the inner surface 69 of the load-receiving member 66, and the first connecting member 30, the viscoelastic body 32, and the locking member 2 are stacked in the left-right direction inside the load-receiving member 66. Therefore, it can be attached to load-receiving members 66 of different sizes, providing excellent versatility. Furthermore, even when it is retrofitted to the shelf portion 64 of an existing rack 60, the load W does not get in the way. Therefore, it can be applied regardless of the size of the load-receiving member 66, can be easily installed on an existing rack 60, and provides excellent installability. Furthermore, by attaching the vibration-damping stopper 1A to the inner surface 69, space is saved and the vibration-damping stopper 1A is protected from external factors. In particular, deterioration of the viscoelastic body 32 due to light and ozone can be reduced. In particular, the locking member 2 is provided with wide portions 20a, 20b that are located close to the upper and lower inner surfaces of the load-receiving member 66 and slide against the upper or lower inner surface as the viscoelastic body 32 is subjected to shear deformation in the front-to-rear direction, thereby suppressing tilting of the locking member 2 when it is displaced and restricting deformation of the viscoelastic body 32 in the up-and-down direction, thereby maintaining the required damping performance.

[0029] In the above-mentioned second embodiment, the shapes of the components and the locking portion can be changed as appropriate. The locking portion may be bent in opposite directions. The locking portion may be formed separately and connected to the locking member. The attachment of the first connecting member to the load-receiving member is not limited to riveting, and may be bolting, welding, etc. If on-site attachment is possible, a procedure may be adopted in which a second connecting member is provided as in form 1 to fabricate a vibration-damping unit, and the vibration-damping unit is then attached to the locking member. The vibration-damping stopper can be attached to the right inner surface of the cargo receiving member instead of the left inner surface. If the locking portion is symmetrical from top to bottom, the locking portion will protrude from the top surface of the cargo receiving member even if the vibration-damping stopper is attached to the right inner surface of the cargo receiving member. However, the locking portion does not have to be symmetrical from top to bottom.

[0030] [Form 3] 7 shows an example of a vibration-damping stopper according to the second configuration. This vibration-damping stopper 1B is attached to the outer surface 67 of a load-receiving member 66, and the locking members 2 and vibration-damping units 3 are stacked in the vertical direction. First, the first connecting member 30 is L-shaped in front view and includes a vertical connecting portion 36 in the up-down direction and a horizontal connecting portion 37 in the left-right direction. The vertical width of the first connecting member 30 is smaller than the vertical width of the outer surface 67. Three through holes 33, 33... for rivet fastening are provided in the vertical connecting portion 36 at a predetermined interval in the front-to-rear direction. Three through holes 68, 68... are also provided in the outer surface 67 of the load receiving member 66 at the same front-to-rear interval. The horizontal connecting portion 37 has two through holes 33, 33 for rivet fastening provided in the front and rear. The vibration damping unit 3 has a locking member 2, a second connecting member 31, and a viscoelastic body 32, and is placed on the horizontal connecting portion 37 in a stacked state in the vertical direction, with the locking member 2 on the upper side and the second connecting member 31 on the lower side. The locking member 2 and the second connecting member 31, excluding the locking portion 21, have the same length in the front-to-rear direction as the horizontal connecting portion 37. The locking portion 21 is formed symmetrically by bending the front end of the locking member 2 upward at a right angle.

[0031] In this vibration-damping stopper 1B, the first connecting member 30 and the vibration-damping unit 3 are separately manufactured, and then joined together and attached to the load-receiving member 66 at the construction site. First, the vertical connecting portion 36 of the first connecting member 30 is positioned by aligning the through holes 33, 33... with the through holes 68, 68... of the outer surface 67, and then connected to the outer surface 67 by three inner rivets 4, 4... that are passed through the through holes 33, 33... and the through holes 68, 68... respectively. Next, the vibration control unit 3 is set on the horizontal connecting part 37 with the second connecting member 31 facing downwards, and the through holes 34, 34 are aligned with the through holes 33, 33 to be positioned, and the unit is connected to the horizontal connecting part 37 with two outer rivets 5, 5 that are passed through the through holes 34, 34 and the through holes 33, 33, respectively. Note that the locking member 2 is formed with relief holes 38, 38 to prevent interference with the outer rivets 5, 5 when the outer rivets 5, 5 are used for connection. 7, the vibration-damping stopper 1B is attached with the second connecting member 31, the viscoelastic body 32, and the locking member 2 stacked in the vertical direction on the horizontal connecting portion 37 of the first connecting member 30. In this state, the upper end of the locking portion 21 of the locking member 2 is outside the load receiving member 66 and protrudes above the upper surface of the load receiving member 66.

[0032] Therefore, when the rack 60 with the vibration-damping stopper 1B attached to the load-receiving member 66 vibrates and the pallet P on the shelf 64 moves back and forth together with the load W, the locking portion 21 abuts against the pallet P, acting as a stopper that restricts further forward and backward movement. As the shelf 64 swings back and forth and the pallet P repeatedly moves back and forth, the pallet P intermittently abuts against the locking portion 21, causing the locking member 2 to repeatedly displace back and forth. Then, each time the locking member 2 displaces, the viscoelastic body 32 undergoes shear deformation, converting collision energy into thermal energy and damping the vibration. Therefore, the load W can be effectively prevented from falling off the shelf 64.

[0033] In this vibration-damping stopper 1B, the first connecting member 30 can be attached to the outer surface 67 of the cargo receiving member 66, and when attached to the outer surface 67, the first connecting member 30, the second connecting member 31, the viscoelastic body 32, and the locking member 2 are stacked in the vertical direction outside the cargo receiving member 66. Therefore, it can be attached even if the size of the goods receiving member 66 is different, and it has excellent versatility. Also, when it is retrofitted to the shelf portion 64 of an existing rack 60, the goods W do not get in the way. Therefore, it can be applied regardless of the size of the goods receiving member 66, can be easily constructed on an existing rack 60, and has excellent installability. In particular, since the engaging portion 21 has a shape that is symmetrical in the left-right direction, the vibration-damping stopper 1B can be attached to either the left or right side of the goods receiving member 66. If the front and back are reversed, it can be attached to either the front or back end of the goods receiving member 66. This increases the degree of freedom in attachment to the rack 60, further improving installation. Of course, the stopper function can be maintained whether it is attached to the left or right side.

[0034] The vibration-damping stopper 1B has the locking portion 21 protruding upward outside the load-receiving member 66, and the first connecting member 30 can be attached to the vibration-damping unit 3 with its orientation changed from left to right. Therefore, for example, as shown in Figure 8, even when two loads W1 and W2 are placed on the shelf 64, one at the front and one at the back, a vibration-damping stopper 1B can be provided for each of the loads W1 and W2. Note that support members are omitted from Figure 8. Here, a pair of vibration-damping stoppers 1B, 1B whose locking portions 21 are located in front of the front cargo W1 are provided at the front ends of the opposing side surfaces of the left and right load receiving members 66, 66, with the left and right directions of the first connecting member 30 opposite to each other. Also, a pair of vibration-damping stoppers 1B, 1B whose locking portions 21 protrude behind the cargo W1 are provided at the middle portions of the opposing side surfaces of the left and right load receiving members 66, 66, with the left and right directions of the first connecting member 30 opposite to each other. Similarly, for the rear cargo W2, a pair of vibration-damping stoppers 1B, 1B whose locking portions 21 are located in front of and behind the cargo W2 are provided at the middle portions and rear ends of the opposing side surfaces of the left and right load receiving members 66, 66, respectively. However, the vibration-damping stopper 1B located behind the front cargo W1 and the vibration-damping stopper 1B located in front of the rear cargo W2 do not need to have separate first connecting members 30, 30 adjacent to each other in the front and rear, but may instead be a single member connecting the first connecting members 30, 30 together. Therefore, if the loads W1, W2 on the shelf portion 64 move back and forth due to an earthquake or the like and come into contact with the respective locking portions 21 of the vibration-damping stoppers 1B, 1B located at the front and rear, further movement will be restricted.

[0035] 9, the first connecting member 30 may have a U-shaped cross section in which parallel horizontal connecting portions 37A, 37B are connected to the upper and lower ends of the vertical connecting portion 36. However, the horizontal connecting portion 37A has a slightly shorter front-to-rear length than the lower horizontal connecting portion 37B to avoid interference with the locking portion 21. Here, the second connecting member 31, the viscoelastic body 32, and the locking member 2 are stacked vertically above the lower horizontal connecting portion 37B, and the upper horizontal connecting portion 37A is close to the upper surface of the locking member 2. When the loads W1, W2 on the shelf 64 come into contact with the locking portions 21 of the vibration-damping stoppers 1B, 1B, a force acts on the locking member 2 to tilt the locking portion 21 side downward. However, in this modified example, the horizontal connecting portion 37A is located close to the upper side of the locking member 2, and therefore the end portion opposite the locking portion 21 comes into contact with the horizontal connecting portion 37A, thereby preventing the locking member 2 from tilting. According to this modified example, the first connecting member 30 has a U-shaped cross section, and the second connecting member 31, the viscoelastic body 32, and the locking member 2 are stacked in the vertical direction on the lower horizontal connecting portion 37B, and the upper horizontal connecting portion 37A is close to the upper surface of the locking member 2, so that the horizontal connecting portion 37A prevents the locking portion 21 from shifting downward, thereby reliably restricting the movement of the cargoes W1 and W2.

[0036] In this modified example, the upper horizontal connecting portion 37A may abut against the upper surface of the locking member 2 before the cargoes W1, W2 abut against the locking portion 21. The length of the horizontal connecting portion 37A may be further shortened, or the thickness or width may be different from that of the horizontal connecting portion 37B. The horizontal connecting portion 37A may be formed by joining a separate member to the vertical connecting portion 36. Also, as explained in Figure 8, here too, for the vibration-damping stopper 1B located behind the front cargo W1 and the vibration-damping stopper 1B located in front of the rear cargo W2, instead of providing separate adjacent first connecting members 30, 30 at the front and rear, the front and rear vertical connecting portions 36, 36 and the front and rear lower horizontal connecting portions 37B, 37B can be connected to each other as a single member, with upper horizontal connecting portions 37A, 37A provided at both the front and rear ends of a single first connecting member 30.

[0037] In the above-mentioned third embodiment, the shapes of the components and the locking portion can be changed as appropriate. The locking portion may be formed separately and connected to the locking member. The locking portion does not have to be symmetrical. The attachment of the first connecting member to the cargo receiving member is not limited to riveting, but may be bolting, welding, etc. If on-site attachment is possible, the second connecting member may be omitted and the viscoelastic body may be directly adhered to the locking member. Even in the case of a vertically laminated type vibration-damping stopper as in the above-mentioned form 3, if attachment is possible, it may be housed inside the load receiving member and the first connecting member may be attached to the inner surface. By attaching the vibration-damping stopper to the inner surface, not only is it possible to save space, but the vibration-damping stopper is protected from external factors and deterioration of the viscoelastic body due to light and ozone can be reduced.

[0038] The number and shape of the shelves in the racks of an automated warehouse can also be changed as needed. The shelves are not limited to being provided with the same vibration-damping stoppers on the left and right cargo receiving members, and vibration-damping stoppers of the above-mentioned various shapes and modifications may be attached in combination. In the shelf section, the vibration-damping stopper may be provided on only one of the left and right cargo receiving members. [Explanation of symbols]

[0039] 1, 1A, 1B... vibration-damping stopper, 2... locking member, 3... vibration-damping unit, 4... inner rivet, 5... outer rivet, 6... guide member, 20, 20a, 20b... wide portion, 21... locking portion, 30... first connecting member, 31... second connecting member, 32... viscoelastic body, 36... vertical connecting portion, 37, 37A, 37B... horizontal connecting portion, 60... rack, 64... shelf portion, 66... ​​load-receiving member, 67... outer surface, 69... inner surface.

Claims

1. A vibration-damping stopper is attached to a cylindrical cargo receiving member that forms a shelf portion of a rack in an automated warehouse and extends horizontally in a front-to-rear direction, which is a direction in which cargo is put in and taken out, and that prevents cargo from falling in the front-to-rear direction from the shelf portion, The device includes at least a locking member having a locking portion for engaging with a cargo, a connecting member connected to the cargo receiving member, and a viscoelastic body interposed between the locking member and the connecting member, which is shear deformed by relative movement in the front-rear direction between the locking member and the connecting member, The connecting member can be attached to the inner or outer surface of the cargo receiving member, and when the connecting member is attached to the inner or outer surface, the connecting member, the viscoelastic body, and the locking member are stacked in the left-right direction, and the locking portion protrudes upward above the cargo receiving member.

2. 2. The vibration-damping stopper according to claim 1, wherein the engaging portion has a shape that is symmetrical in the vertical direction.

3. The vibration-damping stopper described in claim 1, characterized in that the connecting member can be attached to the outer surface of the cargo receiving member, and when attached to the outer surface, the connecting member, the viscoelastic body, and the locking member are stacked in the left-right direction outside the cargo receiving member.

4. A vibration-damping stopper as described in claim 1, characterized in that a second connecting member is interposed between the viscoelastic body and the locking member, and the connecting member, the viscoelastic body, the second connecting member, and the locking member are stacked in the left-right direction with the connecting member attached to the inner surface or the outer surface.

5. The vibration-damping stopper described in claim 1, characterized in that the connecting member is attached to the inner surface of the cargo receiving member, and the connecting member, the viscoelastic body, and the locking member are stacked in the left-right direction inside the cargo receiving member.

6. The vibration-damping stopper described in claim 5, characterized in that the engaging member abuts or is close to the upper inner surface and / or the lower inner surface of the cargo receiving member and is provided with a guide portion that slides against the upper inner surface and / or the lower inner surface in response to shear deformation in the forward / backward direction of the viscoelastic body.

7. A vibration-damping stopper is attached to a cylindrical cargo receiving member that forms a shelf portion of a rack in an automated warehouse and extends horizontally in a front-to-rear direction, which is a direction in which cargo is put in and taken out, and that prevents cargo from falling in the front-to-rear direction from the shelf portion, The device includes at least a locking member having a locking portion for engaging with a cargo, a connecting member connected to the cargo receiving member, and a viscoelastic body interposed between the locking member and the connecting member, which is shear deformed by relative movement in the front-rear direction between the locking member and the connecting member, The connecting member can be attached to the inner or outer surface of the cargo receiving member, and when the connecting member is attached to the inner or outer surface, the connecting member, the viscoelastic body, and the locking member are stacked in the vertical direction, and the locking portion protrudes upward above the cargo receiving member.

8. 8. The vibration-damping stopper according to claim 7, wherein the engaging portion has a shape that is symmetrical in the left-right direction.

9. The vibration-damping stopper described in claim 7, characterized in that the connecting member can be attached to the outer surface of the cargo receiving member, and when attached to the outer surface, the connecting member, the viscoelastic body, and the locking member are stacked in the vertical direction outside the cargo receiving member.

10. A vibration-damping stopper as described in claim 9, characterized in that a second connecting member is interposed between the connecting member and the viscoelastic body, and the connecting member, the second connecting member, the viscoelastic body, and the locking member are stacked in the vertical direction with the connecting member attached to the inner surface or the outer surface.

11. The vibration-damping stopper described in claim 10, characterized in that the connecting member has a U-shaped cross section consisting of a vertical connecting portion that can be attached to the outer surface and upper and lower horizontal connecting portions that are connected to the upper and lower ends of the vertical connecting portion, and the second connecting member, the viscoelastic body, and the locking member are stacked in the vertical direction in the lower horizontal connecting portion, and the upper horizontal connecting portion is close to or abuts the upper surface of the locking member.

12. The vibration-damping stopper described in claim 7, characterized in that the connecting member can be attached to the inner surface of the cargo receiving member, and when attached to the inner surface, the connecting member, the viscoelastic body, and the locking member are stacked in the vertical direction inside the cargo receiving member.

13. A rack for an automated warehouse in which a plurality of shelf sections are arranged in the left-right direction, which is a horizontal direction along the path of a stacker crane, and in the up-down direction, and each shelf section is formed including a cylindrical cargo receiving member extending horizontally in the front-to-rear direction, which is a direction in which cargo is put in and taken out, A rack for an automated warehouse, wherein the vibration-damping stopper according to any one of claims 1 to 12 is attached to the cargo receiving member of each shelf portion.

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