JP2020158287A - Rack damping structure - Google Patents

Abstract

To provide a rack damping structure that can be installed in a narrower space and can dampen more effectively.SOLUTION: A plurality of front pillars and a plurality of back pillars are provided via linear rails, respectively, and a pillar base portion 40a of a front side beam portion 4 and a pillar base portion 50a of a back side beam portion 5 have connecting portions 40c, 50c to which two horizontal braces (bottom braces) 10 hung from different diagonal directions are connected, and an oil damper 11 is interposed between the connecting portions and a floor surface 8 on which the linear rails are installed.SELECTED DRAWING: Figure 4

Description

The present invention relates to a rack damping structure that can be installed in a narrower space and can dampen more effectively.

As a vibration damping structure of the rack, for example, Patent Document 1 is known. The problem of "vibration damping structure of structure" of Patent Document 1 is to provide a vibration damping structure of a structure capable of rationally, easily, and effectively damping a structure such as a rack. The fixed-side rack constructed by fixing it on the floor and the fixed-side rack have the same height as the fixed-side rack, and can be horizontally moved on the floor in the direction of contacting and separating from the fixed-side rack via the horizontally movable means. Both ends are rigidly joined to the supported movable rack and the top of the movable rack and the top of the fixed rack, and the movable rack is horizontal only between the top of the movable rack and the top of the fixed rack. It is provided horizontally along the moving direction and is provided with a rigid connecting member that transmits a force between the movable rack and the fixed rack.

That is, in an automated warehouse in which two racks constructed in a multi-stage high-rise are arranged so that the receiving sides of the contents in the racks face each other with the stacker cranes separated from each other so that the stacker crane can run, and the tops are rigidly joined. It is a vibration damping structure of the rack.

The two racks are constructed by fixing one rack (fixed side rack) to the support base, and the other rack (movable side rack) is horizontally movable between the movable side rack and the support base. It is built through means.

Therefore, the movable rack can be horizontally moved in the direction of approaching or separating from the fixed rack. It is also suggested that a damping means such as a damper is arranged in an area outside the rack between the movable rack and the support base.

Japanese Unexamined Patent Publication No. 2015-189536

In order for the damping means provided between the movable rack and the support base to work effectively, as in the vibration damping structure of the rack of the background technology, the movable rack needs to have high rigidity.

The conventional rack is provided with braces in the vertical plane distributed from the upper and lower ends of the front end portion in the front-rear direction, which is the direction in which the contents of the rack are taken in and out, to the upper and lower ends of the rear end portion of the rack. .. In addition, the vertical inner braces are dispersedly arranged on the entire surface of the rack on the rear end side, which is the non-accepting side surface, or the long vertical inner braces are arranged from the upper two corners to the lower two corners. It is provided diagonally across the section.

When the long vertical inner brace was provided in the diagonal direction, the rigidity of the rack was high at the four corners to which the vertical inner brace on the non-accepting side was connected. In this case, suitable installation positions for effectively acting the damping means provided between the movable rack and the support base are two positions on both corners on the lower end side of the rack.

However, in order to dampen a multi-stage high-rise rack with damping means provided at two locations, a large damping means is required. As the damping means becomes large, the damping means must be installed outside the rack, and there is a problem that a larger occupied area is required for installing the rack provided with the damping means.

Instead of providing a long vertical inner brace in the diagonal direction, there is a method of arranging a large number of small vertical inner brace, but the damping means can be installed by the vertical inner brace on the non-accepting side. It was the same in that it was limited to the position where it was connected at the bottom of the rack.

Since the load of the rack is unbalanced depending on the arrangement of the contents, when the contents are concentrated on a part, the horizontal force at the time of an earthquake acts on that part. The vertical in-face brace on the rear end side of the rack can disperse this horizontal force to some extent, but because of the stress in the out-of-plane direction, it cannot withstand a large horizontal force. As a result, there is a problem that a large-sized damping device must be arranged at a predetermined location in anticipation of the maximum expected load.

The present invention has been devised in view of the above-mentioned conventional problems, and an object of the present invention is to provide a vibration damping structure of a rack that can be installed in a narrower space and can suppress vibration more effectively. To do.

The vibration damping structure of the rack according to the present invention has a predetermined height between a plurality of first pillars arranged along the first direction at intervals from each other and two beam bases of the first pillars adjacent to each other. The first column beam portion having the first beam spanned by the beam and each of the plurality of the first columns are located at positions facing each other at a distance in the second direction intersecting the first direction. A second column beam portion having a plurality of second columns arranged along the first direction and a second beam spanned at a predetermined height between the column bases of two adjacent second columns. A third beam spanned at a predetermined height between the column base of the first column and the column base of the second column facing each other in the second direction, and the first beam. A rack having a plurality of braces hung at a predetermined height between a portion and the second pillar beam portion, and the plurality of the first pillar and the plurality of the second pillars are movable. The first column beam portion and the second column beam portion provided via a support have a connecting portion in which two of the plurality of braces, which are hung from different directions, are connected to each other. It is characterized in that a damper is interposed between the connecting portion and the installation surface on which the movable support is installed.

The rack includes a plurality of intermediate beams with respect to the first beam, the second beam, and the third beam at predetermined intervals in the vertical direction, and at the height of the intermediate beams, the first column beam. The brace is hung between the portion and the second column beam portion.

Two of the racks are arranged side by side at intervals in the second direction, and the tops of the racks are connected to each other. The second pillar is provided via a movable bearing.

The rack is partitioned by the first beam, the second beam, the third beam, and the intermediate beam, and a plurality of storage spaces for accommodating the contents are formed together with the pallets, and each of these accommodation spaces is formed. A beam on which the pallet is placed is provided on the pallet, and the damper is provided in the lowermost accommodation space at a position below the arm.

The movable bearing is characterized in that it is a sliding bearing.

The movable bearing is characterized in that it is a rolling bearing.

In the vibration damping structure of the rack according to the present invention, it can be installed in a narrower space, and vibration damping can be performed more effectively.

It is a front view which shows one preferable embodiment of the vibration damping structure of the rack which concerns on this invention. It is a side view of the vibration damping structure of the rack shown in FIG. 1 as seen from the fixed rack side. It is an enlarged perspective view of the main part which shows the accommodating part provided in the rack to which the vibration damping structure of the rack shown in FIG. 1 is applied. It is a top view which shows the arrangement of the brace (bottom brace) in the horizontal plane, the linear rail, and the oil damper which constitute the vibration damping structure of the rack shown in FIG. FIG. 5A is an explanatory view illustrating the arrangement of the linear rail and the oil damper constituting the vibration damping structure of the rack shown in FIG. 1, and FIG. 5A is a cross-sectional view taken along the line AA in FIG. 5 (b) is a cross-sectional view taken along the line BB in FIG. It is an enlarged perspective view of a main part when a sliding bearing is used instead of the linear rail of the vibration damping structure of the rack shown in FIG. It is a top view which shows the modification of the arrangement shown in FIG.

The vibration damping structure of the rack according to the present invention will be described in detail below with reference to the accompanying drawings. In the present embodiment, luggage and the like are taken in and out by a stacker crane provided so as to travel freely. An example of a rack provided long along the traveling direction (hereinafter referred to as the traveling direction) of the traveling stacker crane will be described below.

As shown in FIGS. 1 to 3, the rack 1 provided with the vibration damping structure of the present embodiment is carried by a stacker crane (not shown) on a pallet 2 (see FIG. 3). Etc. are provided with a plurality of accommodation spaces S that are taken in and out in the depth direction (second direction) of the rack 1 that is orthogonal to the traveling direction (first direction) of the stacker crane.

The rack 1 is provided with a plurality of such accommodation spaces S in a row in the traveling direction and in a plurality of stages in the vertical direction. The entire rack 1 is long in the traveling direction and high in height, but the width in the depth direction is configured to be extremely narrower than that in the traveling direction and the height direction. Therefore, when an earthquake occurs, the rack 1 sways more in the depth direction.

In the following description, the side in which the luggage 3 is taken in and out in the depth direction will be referred to as the front side, and the opposite side will be referred to as the back side.

As shown in FIG. 1, the racks 1 extending long in the traveling direction are provided so as to form a pair with the traveling region R of the stacker crane interposed therebetween. Therefore, the two racks 1 that form a pair face each other on the front side. Each rack 1 is composed of a plurality of columns and a plurality of beams.

The rack 1 includes a front beam portion 4 arranged on the traveling region R side on the front side, a back beam portion 5 arranged on the back side, a front beam portion 4 and a back beam portion 5. It is composed of a plurality of connecting beams 6 as a third beam to be hung between and.

The front-side column beam portion 4 is located between the front-side pillars 40 as a plurality of first pillars arranged along the traveling direction while being spaced apart from each other on the front-side side, and the two front-side pillars 40 adjacent to each other. It is composed of a plurality of front side beams 41 that are hung and arranged at intervals in the vertical direction.

Of the plurality of front-side beams 41, the front-side beam 41 that is hung over the column base portion 40a of the front-side pillar 40 and is located at the bottom corresponds to the first beam (see FIG. 5).

As shown in FIG. 3, the back side column beam portion 5 includes a back side pillar 50 as a plurality of second pillars arranged along the traveling direction while being spaced apart from each other on the back side, and two adjacent pillars and beams. It is composed of a plurality of back side beams 51 which are hung between the back side columns 50 and arranged in the vertical direction at intervals from each other.

Of the plurality of back-side beams 51, the back-side beam 51 that is hung over the column base 50a of the back-side column 50 and is located at the bottom corresponds to the second beam.

The plurality of front side pillars 40 and the plurality of back side pillars 50 are arranged so as to be spaced apart from each other in the traveling direction and the front side pillar beam portion 4 and the back side pillar beam portion 5 face each other in the depth direction. .. The plurality of front side beams 41, the plurality of back side beams 51, and the plurality of connecting beams 6 are each provided at the same interval in the vertical direction, and are arranged at the same height at a plurality of locations in the vertical direction.

Each space surrounded by a plane connecting two front side pillars 40 and back side pillars 50 adjacent to each other and two front side beams 41, back side beams 51 and connecting beams 6 adjacent to each other in the vertical direction is the luggage 3 It is formed as a storage space S of. That is, each rack 1 is provided with a plurality of accommodation spaces S in the traveling direction and the vertical direction.

Each of the front side pillars 40 and each back side pillar 50 is provided with support bars 40b and 50b which are located on the lower end side of each accommodation space S and project to two accommodation spaces S adjacent to each other in the traveling direction. .. An arm 7 on which the pallet 2 is placed is hung between the support bars 40b and 50b provided on the front side pillar 40 and the back side pillar 50 facing each other in the depth direction on the respective accommodation spaces S side. There is.

Therefore, on the lower end side of each accommodation space S, the arms 7 hung on the support bars 40b and 50b provided on the pair of front side pillars 40 and the back side pillars 50 adjacent to each other in the traveling direction are projected. There is.

Each arm 7 is provided at a position higher than the lower front beam 41, the back beam 51, and the two connecting beams 6 forming the accommodating space S in which the arm 7 projects.

On the back surface of each rack 1, as shown in FIGS. 2 and 3, the corners of the back pillar 20 and the back beam 51 are obliquely oriented with respect to each accommodation space S. A vertical inner brace 52, which is a seismic element, is arranged in connection with the brace 52. Instead of arranging the braces 52 in the vertical plane individually in each accommodation space S, as shown by a virtual line in FIG. 2, the rack 1 is provided from each of the two corners at the upper end on the inner side of the rack 1. It may be arranged in an oblique direction over each of the two corners at the lower end on the back side of the.

Between two connecting beams 6 adjacent to each other in the vertical direction, on the front end side of the upper connecting beam 6 and on the back end side of the lower connecting beam 6, or on the back end side of the upper connecting beam 6. The vertical inner brace 53 is arranged diagonally across the front end side of the connecting beam 6 on the lower side.

One of the two racks 1 provided so as to form a pair is constructed by fixing the front side pillar 40 and the back side pillar 50 to the floor surface 8 as the installation surface on which the rack 1 is installed. On the other hand, the front side pillar 40 and the back side pillar 50 are constructed between the floor surface 8 and the floor surface 8 via movable bearings.

The movable bearing is a linear rail 9 that forms a rolling bearing. The linear rail 9 is arranged so as to allow the front side pillar 40 and the back side pillar 50 to move in the depth direction.

In the following description, the rack 1 fixed to the floor surface 8 is referred to as a fixed rack 1, and the rack 1 in which the linear rail 9 is interposed is referred to as a movable rack 1.

As shown in FIG. 1, in order to match the heights of the accommodation spaces S of the fixed rack 1 and the movable rack 1, the linear rail 9 installed in the movable rack 1 is the accommodation space of the lowest layer from the floor surface 8. The height is set so that it can be accommodated up to the lower end of S.

Then, only the tops 1a of the fixed rack 1 and the movable rack 1 located at the same height are connected by the rigid connecting member 1b.

Further, as shown in FIG. 4, the front side pillar 40 and the back side pillar 50 of each rack 1 have the lowermost front side beam (first beam) 41 and the back side beam (first beam) on the column bases 40a and 50a. A horizontal brace (hereinafter referred to as a lowermost brace) 10 is provided which is arranged substantially horizontally and diagonally at the same height as the two connecting beams (2 beams) 51 and the two connecting beams (third beam) 6. Here, the height at which the lowermost front beam 41, the back beam 51, and the two connecting beams 6 are provided corresponds to a predetermined height.

The lowermost brace 10 of the movable rack 1 is a rectangular region formed by the lower front beam 41, the back beam 51, and the two connecting beams 6 forming the accommodation space S at the lowermost stage of the movable rack 1. One is arranged in K.

As shown in FIG. 4, each lowermost brace 10 has the front side pillar 40 and the back side pillar 50 in each of the above-mentioned areas K surrounded by the column bases 40a and 50a of the front side pillar 40 and the back side pillar 50. It is hung at an angle between the two. Further, the lowermost braces 10 provided in the adjacent rectangular regions K are arranged so that the inclination directions are different from each other.

As a result, the front side pillar 40 and the back side pillar 50 to which the connecting beams 6 are connected are provided with connecting portions 40c and 50c in which the two lowermost braces 10 are connected from different directions in the traveling direction. The side pillars 40 and the back side pillars 50 are alternately arranged.

An oil damper 11, which is an example of a damper, is provided below the two lower connecting beams 6 forming the lowermost accommodation space S so as to be interposed between the connecting portions 40c and 50c and the floor surface 8. Has been done. The oil damper 11 is arranged so as to apply a damping force in the moving direction permitted by the linear rail 9.

In the present embodiment, the oil damper 11 can be provided under the connecting beam 6 at a predetermined height at which the lowermost front beam 41, the back beam 51 and the two connecting beams 6 are provided. Any height can be set.

As shown in FIG. 5, the oil damper 11 is arranged along the depth direction and is provided between the front side pillar 40 and the back side pillar 50, and one end thereof is connected to the connecting portions 40c and 50c. The other end is connected to a base 12 provided on the floor surface 8.

In the oil dampers 11 adjacent to each other in the traveling direction, one end connected to the connecting portions 40c and 50c and the other end connected to the base portion 12 are oriented in opposite directions on the front side and the back side in the depth direction. It is provided so as to be arranged in. Further, both ends of the oil damper 11 are rotatably attached to the column bases 40a and 50a and the base 12 about an axis along the vertical direction.

According to the vibration damping structure of the rack of the present embodiment, the connecting portions 40c and 50c of the lowermost brace 10 in which the oil damper 11 is interposed between the floor surface 8 and the column base portion 40a of the front side pillar 40 and the back thereof. Two beams that are hung at the same height as the front beam 41, the back beam 51, and the connecting beam 6 that are hung between the column base 50a of the side column 50, and are hung from different diagonal directions. Since the connecting portions 40c and 50c to which the lowermost brace 10 is connected are connected, it is a portion of the movable rack 1 that has extremely high rigidity and is not easily deformed.

Therefore, when the oil damper 11 acts between the floor surface 8 and the connecting portions 40c and 50c, the movable rack 1 is unlikely to be deformed. Therefore, when an earthquake is input, the damping force of the oil damper 11 is more efficiently applied. Can act.

Further, since a plurality of connecting portions 40c and 50c to which the lowermost brace 10 is connected are provided in one movable rack 1, more oil is provided between each connecting portion 40c and 50c and the floor surface 8. A damper 11 can be provided. In other words, the oil damper 11 does not have to be connected to all the connecting portions 40c and 50c.

A small oil damper 11 can be used by evenly distributing and damping the seismic energy input to the movable rack 1 to more oil dampers 11. If it is a small oil damper 11, it can be accommodated by lowering the predetermined height, and the oil damper 11 can be arranged within the occupied area of the movable rack 1, that is, within the area K.

Therefore, it is possible to form a movable rack 1 having a narrow depth equipped with the oil damper 11, and it is possible to construct a vibration damping structure of the rack capable of damping the vibration more efficiently.

Further, by connecting the top 1a of the movable rack 1 provided via the linear rail 9 and the top 1a of the fixed rack 1 fixed to the floor surface 8, the period as a structure can be changed by seismic motion. The period can be made longer than the period, and the vibration acceleration, interlayer shear force, and displacement (amplitude) of the structure can be reduced rationally and efficiently.

Since the oil damper 11 is provided below the arm 7 provided in the lowermost accommodation space S of the movable rack 1, the oil damper 11 does not interfere with the placement of the pallet 2 on the arm 7. However, the luggage 3 can be stored up to the bottom, and the entire movable rack 1 can be effectively used. Furthermore, if a sufficiently small damper is used, it can be accommodated in the space under the arm 7 which is not used in a general automatic rack, so it can be controlled without changing the specifications compared to a standard automatic rack. It can be a seismic structure.

Since the linear rail 9 is interposed under the front side pillar 40 and the back side pillar 50 of the movable rack 1, the movable rack 1 can be moved smoothly, and the movable rack 1 is input from the floor surface 8. The period can be surely made longer than the period of seismic motion, and an excellent vibration damping action can be ensured.

Since the linear rail 9 restricts the upward movement of the movable rack 1, it is possible to prevent the movable rack 1 from being lifted even if a force acts in the direction of pushing up the movable rack 1.

In the above embodiment, the damper is an oil damper 11, but the damper is not limited to this, and has a function of attenuating vibration energy such as a viscous damper and a viscoelastic damper, and has a front beam portion 4 and a back beam portion 4. Anything may be used as long as it can be arranged below the lowermost front beam 41, the back beam 51, and the connecting beam 6.

In the above embodiment, there is an example in which the horizontal brace (bottom brace) 10 is provided only in the connecting portions 40c and 50c of the front beam 41, the back beam 51 and the connecting beam 6 located at the bottom of the movable rack 1. I explained, but it is not limited to this.

For example, the lowermost brace 10 is attached to the connecting portion of the front beam 41, the back beam 51, and the connecting beam 6 as a plurality of intermediate beams provided at predetermined intervals upward from the connecting portions 40c and 50c. An additional in-horizontal brace may be provided in the same manner as above. In this case, the movable rack 1 can increase the rigidity of not only the column bases 40a and 50a but also the movable rack 1 as a whole.

Therefore, when the movable rack 1 supported by the linear rail 9 moves due to the input earthquake, it is possible to suppress the situation in which the movable rack 1 itself bends, and it is possible to suppress the fall of the luggage 3. ..

In the above embodiment, an example in which a linear rail 9 as a rolling bearing is interposed under the front side pillar 40 and the back side pillar 50 of the movable rack 1 has been described, but the movable bearing is not limited to the rolling bearing. Absent.

For example, as shown in FIG. 6, sheet-shaped sliding members 13 are provided on the lower surfaces 40d and 50d of the front side pillar 40 and the back side pillar 50, and face the lower surfaces 40d and 50d of the front side pillar 40 and the back side pillar 50. A receiving plate 14 long in the depth direction may be provided on the floor surface 8 to be provided, and a sliding bearing 16 with the sliding member 13 abutted on the receiving plate 14 may be provided.

In this case, a rising portion 14a raised above the receiving plate 14 is provided on the edge of the receiving plate 14 along the depth direction, and the moving directions of the front side pillar 40 and the back side pillar 50 are restricted only in the depth direction. It is preferable to do so.

The rising portions 14a may be provided on both edges of each receiving plate 14, but may be provided only on one of the receiving plates 14 of the sliding bearings 16 adjacent to each other in the traveling direction, which are different from each other.

By providing the mounting surface facing portion 14b bent on the side facing the receiving plate 14 at the upper end of the rising portion 14a, it is possible to prevent the front side pillar 40 and the back side pillar 50 from being lifted from the receiving plate 14 and coming off. it can.

A sliding member 15 is provided on the surface of the mounting surface facing portion 14b facing the receiving plate 14, and the front side pillar 40 and the back side pillar 50 are located on the mounting surface facing portion 14b facing the sliding member 15. , The sliding member 13 may be further provided.

In the above embodiment, the example in which the oil damper 11 is provided between the connecting portions 40c and 50c and the floor surface 8 has been described, but between some connecting portions 40c and 50c and the floor surface 8 It suffices if it is provided.

Further, in the above example, an example in which connecting portions 40c and 50c are set at two diagonal corners of the rectangular region K and both ends of the lowermost brace 10 in the oblique direction are provided on these corners has been described. As shown in FIG. 7, the connecting portions 40c and 50c are set at the center of the front side beam 41 and the back side beam 51, that is, the connecting portion 50c is set while avoiding the joint position of the back side beam 51. (Although not shown, in the case of the front beam 41 as well, the connecting portion 40c is set while avoiding the joint position), and two lowermost braces 10 are arranged in a V shape in each region K. You may do so.

With such a configuration, the length limitation by the front side pillar 40 and the back side pillar 50 and the height limitation by the connecting beam 6 are relaxed, so that a large damper can be provided.

1 Rack 1a Rack top 2 Pallet 3 Luggage 4 Front side pillar beam part 5 Back side pillar beam part 6 Connecting beam 7 Arm tree 8 Floor surface 9 Linear rail 10 Horizontal brace (bottom brace)
11 Oil damper 16 Sliding bearing 40 Front column 40a Column base of front column 40c, 50c Connecting part 41 Front beam 50 Back column 50a Column base of back column 51 Back beam 52,53 Vertical inward brace S accommodation space

Claims (6)

It has a plurality of first columns arranged along the first direction at intervals from each other and a first beam straddled at a predetermined height between the column bases of the two adjacent first columns. The first column beam part and
A plurality of second pillars arranged along the first direction and adjacent to each other at positions facing each of the plurality of first pillars at intervals in the second direction intersecting the first direction. A second column beam portion having a second beam spanned at a predetermined height between the column bases of the two columns and a second column beam portion.
A third beam spanned at a predetermined height between the column base of the first column and the column base of the second column facing each other in the second direction.
A rack having a plurality of braces spanned at a predetermined height between the first column beam portion and the second column beam portion.
The plurality of the first pillars and the plurality of the second pillars are each provided via movable bearings.
The first column beam portion and the second column beam portion have a connecting portion in which two of the plurality of braces are connected, which are hung from different directions.
A vibration damping structure for a rack, characterized in that a damper is interposed between the connecting portion and an installation surface on which the movable bearing is installed. The rack includes a plurality of intermediate beams with respect to the first beam, the second beam, and the third beam at predetermined intervals in the vertical direction.
The vibration damping structure for a rack according to claim 1, wherein the brace is hung between the first column beam portion and the second column beam portion at the height of the intermediate beam. Two racks are arranged side by side at intervals in the second direction, and the tops of the racks are connected to each other.
The rack according to claim 1 or 2, wherein a plurality of the first pillars and a plurality of the second pillars of the rack are provided via movable bearings among the two racks. Vibration control structure. The rack is partitioned by the first beam, the second beam, the third beam, and the intermediate beam, and a plurality of storage spaces for accommodating the contents are formed together with the pallets, and each of these accommodation spaces is formed. A beam for placing the pallet is provided on the
The vibration damping structure for a rack according to claim 2 or 3, wherein the damper is provided in the lowermost accommodation space so as to be located below the arm. The rack vibration damping structure according to any one of claims 1 to 4, wherein the movable bearing is a sliding bearing. The rack vibration damping structure according to any one of claims 1 to 4, wherein the movable bearing is a rolling bearing.

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