JP2015051865A - Rack seismic control construction method with wire cable and seismic control structure - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a rack seismic control construction method with wire cables which solves the problem that the conventional rack seismic control construction method causes the occurrence of a dead space and does not exhibit a predetermined seismic effect.SOLUTION: The present invention provides a rack seismic control construction method with wire cables, wherein a seismic control device that damps rack oscillation along a carrying in/out directions of a carrying in/out port is provided in the rack, a wire is fastened to the seismic control device so as to exhibit an attenuation function by relative movement to the seismic control device, the wire is tensed so as to be X-shaped in a side view in a range of a side face of the rack and in the gap between adjacent racks to keep both ends of the wire fastened to positions of the rack that are positions vertically opposite to the positions of the seismic control device, in order to make a rack seismic control structure in which the rack and the wire are relatively moved during oscillation along the carrying in/out directions with movement of a rack carrier machine unobstructed.

Description

  The present invention relates to a rack vibration control method using a wire cable and a vibration control structure that suppress vibrations of a rack installed in a building such as a warehouse.

  In an automatic warehouse rack in a building due to vibrations such as an earthquake, the automatic transfer machine cannot be operated due to collapse of the load, and the warehouse function is stopped for a long time. As a result, the stagnation of logistics will have a major impact on social life. Therefore, conventionally, as a seismic control method for a building such as a warehouse, for example, as shown in Conventional Example 1: FIG. A seismic control method for preventing load collapse and dropping is known (see Non-Patent Document 1).

  Conventional Example 2: As shown in FIG. 6, a seismic control frame using an attic space on an automatic rack is installed, and the oil damper that uses bending deformation of the rack is utilized by an oil damper that connects the racks together. There is known a construction method that absorbs vibration energy due to the vibration and suppresses the swing of the rack (see Non-Patent Document 2). In addition, Conventional Example 3: In a warehouse equipped with a rack as in the warehouse described in Patent Document 1, a damper is attached to add resistance to the relative movement in the lateral direction across the top and the rack. Is known.

JP-A-10-265014

Unknown (Taisei Construction Co., Ltd.), “Development of vibration control equipment for automated warehouses, decision to introduce into distribution center” (online), December 7, 2012, Taisei Corporation, search date July 8, 2013 Internet <URL: http://www.taisei.co.jp/about_us/release/2012/1353283291286.html> Unknown (Kashima), “Development of“ Attic Damper System (ADS) ”for 3-D automatic warehouse”, (online), May 16, 2013, Kashima Construction Co., Ltd., search date July 8, 2013 Internet <URL: http://www.kajima.co.jp/news/press/201305/16e1-j.htm>

  However, in the conventional rack seismic control method, in the conventional example 1, the movement of the load hinders the movement of the weight, and the predetermined result may not be exhibited. Moreover, the part which installs a damping device becomes a dead space, and the storage efficiency of a load falls.

  Moreover, in the prior art 2, since the damping effect is expected in bending deformation, there is a problem that the damper efficiency is not good.

  In Conventional Example 3, since a part of the damper is locked to the top of the warehouse, the strength of the warehouse itself is required, and the cost of building materials increases. There is a problem that efficiency decreases. The rack vibration control method and the vibration control structure using the wire cable according to the present invention have been proposed in order to solve such problems.

  The gist for solving the above-mentioned problems of the rack seismic control method using the wire cable according to the present invention is to provide a seismic control device for attenuating vibration along the loading / unloading direction of the rack loading / unloading entrance in the rack. The wire is connected to the vibration control device so that the damping function is exhibited by moving relative to the vibration control device, and the wire is connected between the racks adjacent to each other within the range of the side surface of the rack. In the gap between them, it is stretched so as to be X-shaped when viewed from the side, and both ends of the wire are respectively attached to the positions of the racks that are vertically opposite to the vibration control device, A rack seismic control structure that does not hinder the movement of the rack transporter while being relatively moved along the carry-in / out direction between the rack and the wire during vibration.

  The wire stretched on the side surface of the rack includes a plurality of X-shaped arrangements by arranging a pulley in the middle in the vertical direction.

  The gist for achieving the object by solving the above-mentioned problem of the rack vibration control structure with the wire cable according to the present invention is provided in the range of the left and right side surfaces of the rack in the automatic warehouse installed in the building, A seismic control device installed at the top or bottom of the rack, a wire connected to the seismic control device so as to generate a damping force according to the relative movement amount generated during the earthquake, and the seismic control device And a direction changing member that changes the installation direction of the wire, one end of the wire is spanned over the direction changing member behind the wire connected to the vibration control device, and the wire is The lower part or the top part of the rack, which is stretched so as to be X-shaped in a side view on the side of the rack, and where both ends of the wire are opposite to the vibration control device It is that it is Tsunagigi respectively.

  The rack is formed by arranging a plurality of units arranged in the vertical and horizontal directions with the carry-in / out entrance aligned on the front surface, and the tops of the racks of the two units are connected by a head connecting member. .

  The wire stretched on the side surface of the rack is a multi-stage X-shaped arrangement by arranging a direction changing member in the middle in the vertical direction.

  The wire includes being connected to a vibration control device via a tensioning force adjusting device.

According to the rack seismic control method using the wire cable and the seismic control structure according to the present invention, it becomes possible to install a seismic control device easily and at low cost. Will be maintained.
Moreover, by accommodating the wire within the rack within the gap between the racks, it is possible to apply this vibration control structure to an existing automatic warehouse without interfering with the transfer machine moving in the XY two dimensions. it can.

By connecting the racks in the back-facing configuration with two units with the head connecting member, the same behavior as the rack in which the vibration control device is installed can be obtained.
As long as the damping device exhibits damping force depending on the speed or deformation, it can be applied regardless of the type, and has an excellent effect that an existing damping device can be easily obtained. Is.

  By arranging the X-shaped arrangement on the side of the rack in multiple stages, when the rack vibrates, relative movement with the wire occurs at each stage, and it is accumulated to connect the uppermost wire and the vibration control device. The amount of relative movement between them increases, and a large damping force is exerted by the vibration control device.

It is a schematic explanatory drawing which shows the example of application of the rack seismic control method by the wire cable which concerns on this invention. It is a side view which expands and shows a part of rack damping structure by the wire cable which concerns on the same invention. It is the partial perspective view seen from the upper side of the rack damping structure by the wire cable which concerns on the same invention. It is schematic explanatory drawing (A) and (B) which show the other application example of the rack seismic control method by the wire cable of the same invention. It is schematic explanatory drawing (A) and (B) which show the damping structure for every row in the other application example of the rack damping method by the wire cable of the same invention. It is a characteristic curve figure which shows the difference of the vibration reduction effect when not applying with the case where the rack seismic construction method of an automatic warehouse is applied. It is a characteristic curve figure which shows the difference of the displacement reduction effect when not applying with the case where the rack seismic construction method in the top part of a rack is applied. It is a partial explanatory view showing a rack vibration control structure according to a conventional example. It is a partial explanatory view (A) which shows the rack damping structure concerning the conventional example, and an explanatory view (B) which shows the principle of the damping.

  As shown in FIG. 1-A, a rack seismic control method using a wire cable according to the present invention stretches a wire in an X shape on the side surface of the rack, and carries out the loading / unloading direction a between the wire and the rack (in the front-rear direction). It is attenuated by the vibration control device by relative movement in

  As shown in FIG. 1A and FIG. 1B, a rack damping rack 1 having a rack damping structure using a wire cable according to the present invention has rack top ends 4c and 4d at the top of a pair of racks 4a and 4b facing backward. Are connected to each other by a head connecting member 7. Then, on the rack top ends 4c and 4d of the pair of racks 4a and 4b, the vibration control device 2 for damping the horizontal vibration is installed along the front-rear direction which is the loading / unloading direction a of the rack loading / unloading entrance. To do.

  The seismic control device 2 may be, for example, a hydraulic damper, a screw damper that converts linear motion into rotational motion, or any device that exhibits a damping force depending on speed or deformation.

  As shown in FIGS. 1A and 1B, for example, as shown in FIG. 1A and FIG. 1B, the vibration control device 2 has a roller mechanism 3a that can roll at the top of one rack 4a, and is movable in the horizontal direction. The support part 3 is connected by the rod 2a. On the other hand, at the top of the rack 4b, the reaction force receiving portion 5 that is fixed and erected on the rack top end 4d is connected by the rod 2b. Thereby, the damping force is transmitted to the rack 4a by the support portion 3 moving from the set position along with the rack top end 4c along the loading / unloading direction a during an earthquake.

  Wires 1a and 1b connected in series to the vibration control device 2 are stretched. In this, as shown in FIG. 1-A, pulleys 8 and 8 are installed as direction changing members at both left and right ends, wires 1a and 1b are installed on the pulleys, and are connected to the support member 3. is there. The direction changing member is not limited to a pulley, and may be a cylindrical member or another member as long as there is no problem with the sliding of the wire.

  With respect to the method of attaching the wires 1a and 1b to the support member 3, for example, as shown in FIGS. 1-B and 1-C, a connection member is fixed to the end of the wire 1a, and the connection member is supported by the support member 3. For example, a ring or the like is fixed to the end portion of the wire 1b, and the ring or the like is connected to a hook or the like attached to the support member 3.

  The above-described method for connecting the wires 1a, 1b and the support member 3 is merely an example. In addition, the wire is not two but the whole is one, and the connection member is fixed in the middle, and the connection is made. A structure in which a locking portion provided on the member is connected to the support member 3 may be employed.

  Further, in the connecting structure of the support member 3 and the wires 1a and 1b, as shown in FIG. 1-B, the bolt 10 and the nut 10a which are screw fastening members can be adjusted so that the tension of the wires 1a and 1b can be adjusted. It is preferable that the tension of the wire can be adjusted by tightening or loosening the nut 10a.

  As shown in FIG. 1A, the wires 1a and 1b are viewed from the side of the wires 1a and 1b stretched on the left and right side surfaces in the front-rear direction range of both side surfaces of the pair of racks 4a and 4b. It is stretched to form an X shape when stacked.

  1A, for example, the wire 1a is stretched on the right side on the front side of the paper, and the wire 1b is stretched on the left side on the back side of the paper. By superposing these wires 1a and 1b in a side view, an X-shaped arrangement is obtained.

  The ends of the wires are connected to lower portions (for example, warehouse floors, rack base portions, etc.) 9a, 9b of the pair of racks 4a, 4b. The wire arrangement configuration extending over the left and right side surfaces is well balanced as the wire extending over the rack structure.

  As shown in FIG. 1A, the wires 4a and 4b are disposed in a space between racks of one unit in the vertical direction of the paper, and are racks for two units in the horizontal direction of the paper. Since it is disposed within the range of 4a and 4b, the movement of the transport device 6 is not hindered.

  Thus, in the rack seismic control method using the wire cable according to the present invention, between the tops of the pair of racks 4a and 4b and the wires 1a and 1b on the tops, in the loading / unloading direction a of the loading / unloading port. The wire 1a, 1b is stretched in the Z shape on the left and right side surfaces of the rack so as not to interfere with the movement on the carry-in / out side of the rack transporter 6. ing.

  The rack damping structure using the wire cable attenuates the vibration so that the luggage does not fall from the loading / unloading entrances of the racks 4a and 4b in an earthquake or the like.

  As shown in FIGS. 2A and 2B, the second embodiment of the rack vibration control structure using the wire cable according to the present invention relates to the wire tensioning method on each of the left and right side surfaces of the racks 4 a and 4 b. The wires to be stretched are arranged in a plurality of stages in an X shape by disposing a pair of pulleys at both left and right end portions in the middle in the vertical direction. Moreover, the damping device 2 is arrange | positioned for every rack 4a, 4b.

  As described above, by arranging the wires in a plurality of X-shaped arrangements for each rack, the relative displacement in each stage is accumulated, and the top displacement is increased by the number of stages. Thereby, the damping force of the vibration control device 2 is increased and the damping effect is enhanced.

  As shown in FIG. 2A, for example, the rack seismic control structure using this wire cable is appropriately spaced in the b direction along the front surface orthogonal to the loading / unloading direction a with respect to the rack 4a of one unit. Are installed.

  In addition, regarding the X shape of the wire, as shown in FIG. 2-A, the diagonal material directions are arranged in parallel, but the invention is not necessarily limited thereto, and the diagonal material directions may be alternated. As a modification, it is needless to say that a similar multi-stage X-shaped arrangement (not shown) may be used for the two racks 4a and 4b that are connected by the head connecting member 7 and integrated. .

  In the second embodiment, as shown in FIGS. 2-A and 2-B, the wires stretched on the side surface of the rack are wires 1a, 1b stretched across the left and right side surfaces of the rack. When overlapped in side view, it becomes X-shaped. Similar to the first embodiment, this wire arrangement configuration has a good balance as a wire stretched on the rack structure.

  In addition, although not shown, in the rack vibration control structure using wire cables, the vibration control device 2 and the wires 1a and 1b locked thereto are arranged upside down in the state shown in FIG. It is good. The structure which the damping device 2 is arrange | positioned at the lower part of a rack, and each edge part of the wires 1a and 1b of X-shape arrangement | positioning was connected to the right-and-left both ends of a rack top part may be sufficient. This is because the damping performance does not change as a vibration damping structure.

  FIG. 3 and FIG. 4 show the vibration control effect of the rack vibration control structure using the wire cable according to the present invention. It can be seen that both the effect of reducing the primary frequency of the rack and the relative displacement of the top of the rack are greatly reduced by the vibration control device 2.

  The rack vibration control method and the vibration control structure using the wire cable according to the present invention can be widely applied not only to racks in automatic warehouses but also to rectangular cubes that are long in the vertical direction.

1 damping rack, 1a wire,
2 Seismic control device, 2a, 2b rod,
3 support part, 3a roller mechanism,
4a, 4b rack,
4c, 4d Rack top,
5 Reaction force receiving part,
6 Transporter,
7 Head connecting members,
8 pulley,
9a, 9b connecting part,
10 bolts, 10a nuts.

Claims (6)

A vibration control device is installed in the rack to dampen vibration along the loading / unloading direction of the rack loading / unloading entrance.
The wire is attached to the damping device so that the damping function is exhibited by moving relative to the damping device,
The wire is stretched so as to be X-shaped in a side view in the range of the side surface of the rack and in the gap between adjacent racks,
By connecting the both ends of the wire to the position of the rack, which is the opposite position of the vibration control device,
A rack seismic control structure that moves relative to the rack and the wire along the carry-in / out direction during vibration and does not hinder the movement of the rack transporter,
Rack seismic control method using wire cable. The wire stretched on the side surface of the rack is arranged in a multi-stage X-shape by arranging a pulley in the middle in the vertical direction,
The rack seismic control method using a wire cable according to claim 1. It is provided in the range of the left and right side of the rack in the automatic warehouse installed in the building,
A vibration control device installed at the top or bottom of the rack;
A wire connected to the seismic control device and connected to generate a damping force according to the relative amount of movement that occurs during an earthquake;
It is composed of a direction changing member that changes the erection direction of the wire connected to the vibration control device,
One end of the wire is stretched over the direction changing member behind the wire connected to the vibration control device,
The wire is stretched so as to be X-shaped when viewed from the side of the rack, and both ends of the wire are connected to the lower part or the top part of the rack, which is opposite to the vibration control device. Being worn,
Rack seismic control structure with wire cable. The rack is formed by arranging a plurality of units on the top, bottom, left and right with the carry-in / out entrances in front, and connecting the tops of the racks of the two units with a head connecting member.
The rack vibration control structure using a wire cable according to claim 3. The wire stretched on the side surface of the rack has a multi-stage X-shaped arrangement by arranging a direction changing member in the middle in the vertical direction,
The rack vibration control structure using a wire cable according to claim 4. The wire is connected to the seismic control device via the tension force adjustment device;
The rack vibration control structure by the wire cable of any one of Claims 3 thru | or 5 characterized by these.

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