JP6561975B2 - Rack equipment - Google Patents

Description

  The present invention relates to a rack apparatus.

  As a technique related to a conventional rack apparatus, for example, an automatic warehouse unit described in Patent Document 1 is known. In the automatic warehouse unit described in Patent Document 1, a movable floor body is fixed to a lower portion of a rack having an article storage shelf, and the movable floor body is supported on the fixed floor via a seismic isolation device.

Japanese Patent Laid-Open No. 10-139117

  By the way, in the rack apparatus as described above, a sliding bearing using friction damping may be used as the seismic isolation apparatus. In general, the sliding bearing used in the rack apparatus is often selected from several ready-made products having different friction coefficients. Therefore, it is not possible to use a sliding bearing having a coefficient of friction suitable for the rack device, and it may be difficult to obtain the required seismic isolation performance. Moreover, in the rack apparatus as described above, for example, when a rack shakes during an earthquake, the rack may be twisted.

  Accordingly, an object of the present invention is to provide a rack device that can suppress the twisting of the rack when the rack is shaken and obtain the required seismic isolation performance.

  A rack apparatus according to the present invention includes a rack having a plurality of load placement portions, a plurality of lower beams juxtaposed below in the vertical direction of the rack, and a first beam and a base surface of the plurality of lower beams. A plurality of first slide bearings that are attached to the first beam and are arranged along the extending direction of the first beam, and are attached between a second beam and a base surface of the plurality of lower beams, and are different from the first slide bearing. A plurality of second sliding bearings having a friction coefficient and arranged along the extending direction of the second beam.

  In this rack apparatus, the friction coefficient of the rack with respect to the base surface can be adjusted and the friction damping force acting on the rack can be adjusted by the combination of the first and second sliding bearings having different friction coefficients. This makes it possible to obtain the seismic isolation performance required for the rack device. Further, the plurality of sliding bearings attached to the first beam are all first sliding bearings, and the frictional damping force acting on the first beam is generated by these first sliding bearings. The plurality of sliding bearings attached to the second beam are all second sliding bearings, and the frictional damping force acting on the second beam is generated by these second sliding bearings. Thereby, when a rack shakes, each friction damping force which acts on each of the first beam and the second beam can be made uniform, and the rack can be prevented from being twisted.

  The rack apparatus according to the present invention may include a plurality of racks, and the lower beam may extend over a plurality of racks and in a direction crossing the longitudinal direction of the racks. In this case, in a large-scale rack apparatus including a plurality of racks, it is possible to obtain the required seismic isolation performance while suppressing torsion of the rack when the rack is shaken.

  In the rack device according to the present invention, the number of the first sliding supports attached to one first beam is equal to the number of the second sliding supports attached to one second beam, and the extension of the lower beam. In the direction, each of the plurality of first sliding bearings and each of the plurality of second sliding bearings may be located at the same position. According to the number and arrangement of the first and second sliding bearings, when the rack is shaken in the juxtaposition direction of the lower beam, the rotational moment of the horizontal plane acting on the gantry is suppressed, and the rack Twist can be further suppressed.

  In the rack apparatus according to the present invention, the first beam and the second beam may be alternately arranged. According to this configuration, the first and second sliding bearings are arranged in a state where they are alternately mixed in the juxtaposition direction. Therefore, the above-described effect of adjusting the friction coefficient by combining the first and second sliding bearings having different friction coefficients can be surely exhibited.

  ADVANTAGE OF THE INVENTION According to this invention, while suppressing the twist of the said rack when a rack arises, the rack apparatus which can obtain the required seismic isolation performance can be provided.

It is a schematic sectional side view which shows the automatic warehouse provided with the rack apparatus which concerns on one Embodiment. It is a top view which shows the mount frame of the rack apparatus of FIG. (A) is sectional drawing along the AA of FIG. (B) is sectional drawing along the BB line of FIG.

  Hereinafter, embodiments of the present invention will be described in detail with reference to the drawings. In the drawings, the same or corresponding parts are denoted by the same reference numerals, and redundant description is omitted. The terms “upper” and “lower” correspond to the upper and lower parts in the vertical direction, respectively.

  FIG. 1 is a schematic sectional side view showing an automatic warehouse 1 having a rack device 10. In the drawing, “Z direction” is a vertical direction, “X direction” is a horizontal direction, and “Y direction” is a horizontal direction perpendicular to the X direction and the Z direction. As shown in FIG. 1, an automatic warehouse 1 is provided in a building, for example, and stores loads that have been transported by a transport device or the like. The automatic warehouse 1 includes a rack device 10 and a plurality of stacker cranes 20.

  The rack device 10 includes a stocker body 3, a plurality of racks 5, a gantry 7, and a seismic isolation device 9. The stocker body 3 has a casing shape (for example, a hollow rectangular parallelepiped shape). The stocker body 3 includes a base portion 3a, side wall portions 3b and 3c erected on the base portion 3a, and a ceiling portion 3f. A part of the foundation 3a is buried below the floor F of the building. In the side walls 3b and 3c, for example, an entrance / exit port (not shown) is provided at the center. At the loading / unloading port, loading and unloading of cargo to / from the automatic warehouse 1 is performed.

  Each of the plurality of racks 5 is erected on the base surface 3 s of the base portion 3 a in the stocker body 3 via the seismic isolation device 9 and the gantry 7. In the illustrated example, six racks 5 are erected. The plurality of racks 5 are arranged in the Y direction at intervals with the X direction as the longitudinal direction. Each of the plurality of racks 5 has a plurality of load placement portions on which loads are placed and stored. In the rack 5, the loading units are provided in a plurality of rows along the horizontal direction, and are provided in a plurality of stages along the vertical direction. The rack 5 includes a plurality of support columns arranged at predetermined intervals and a plurality of article support members provided on the support columns at predetermined intervals in the height direction. A load placing portion is constituted by a pair of opposed article support members.

  The gantry 7 is a structure provided at the lower part of the plurality of racks 5 and supports the plurality of racks 5. The seismic isolation device 9 is a device that attenuates external force such as seismic force applied to the rack 5 during an earthquake. The seismic isolation device 9 has a plurality of first sliding bearings 12, a plurality of second sliding bearings 13, and a plurality of rubber bearings 14. The seismic isolation device 9 is disposed between the base surface 3 s and the gantry 7. Details of the gantry 7 and the seismic isolation device 9 will be described later.

  The stacker crane 20 travels on a traveling path 22 that extends along the X direction between adjacent racks 5. In the illustrated example, five stacker cranes 20 are provided. The stacker crane 20 includes a traveling carriage 24, a mast 26 erected on the traveling carriage, and an elevator 28 that can be raised and lowered along the mast 26. The elevator 28 is provided with a transfer device such as a slide fork. The stacker crane 20 conveys the load between the load placement portion of the rack 5 and the loading / unloading port, and transfers (loads and unloads) the load to the load placement portion.

  FIG. 2 is a plan view showing the gantry 7 and the seismic isolation device 9 of the rack device 10 of FIG. As shown in FIG. 2, the gantry 7 includes at least a plurality of lower beams 71 and a plurality of lower girders 72. The gantry 7 is a frame structure formed by assembling a plurality of lower beams 71 and a plurality of lower girders 72 in a lattice pattern. The lower beam 71 and the lower beam 72 are made of, for example, H-shaped steel.

  The lower beam 71 is a large beam that extends over the plurality of racks 5 and extends in the Y direction, which is a direction orthogonal to (intersects with) the longitudinal direction of the racks 5. The lower beams 71 are juxtaposed at predetermined intervals along the X direction. In other words, a plurality of lower beams 71 are arranged with the X direction as the juxtaposition direction. The lower beam 71 includes a first beam 71x and a second beam 71y. The first beam 71x and the second beam 71y are alternately juxtaposed in the X direction. That is, the second beam 71y is located between the adjacent first beams 71x. The number of the first beams 71x and the number of the second beams 72y are the same. The first beam 71x and the second beam 71y have the same structure.

  The lower girder 72 extends in the X direction, which is the longitudinal direction of the rack 5. The lower girders 72 are juxtaposed at predetermined intervals along the Y direction on the plurality of lower beams 71. The length of the lower beam 72 is longer than that of the lower beam 71. The lower beam 71 and the lower beam 72 are connected to each other by a fastener such as welding or a bolt.

  FIG. 3A is a cross-sectional view taken along the line AA in FIG. FIG. 3B is a cross-sectional view taken along line BB in FIG. As shown in FIG. 3A, the first sliding bearing 12 is attached between the first beam 71x and the base surface 3s. The first sliding bearing 12 is a rigid sliding bearing that supports the first beam 71x. The first sliding support 12 includes a base 31 provided on the base portion 3a, a sliding plate 32 laid on the base 31, a sliding member 33 slidably in surface contact with the sliding plate 32, and a sliding member 33. And a connecting member 35 that connects the rigid body 34 and the first beam 71x.

  The base 31 and the sliding plate 32 are fixed to the base portion 3a with bolts or the like. The sliding plate 32 is made of, for example, stainless steel. The sliding member 33 is made of, for example, PTFE (polytetrafluoroethylene) resin. The connecting member 35 is fixed to the rigid body 34 and the first beam 71x by bolts or the like. The first sliding support 12 has a unique friction coefficient as a single unit, and the friction coefficient of the first sliding support 12 (the friction coefficient between the sliding plate 32 and the sliding material 33) is, for example, 0.01. .

  As shown in FIG. 3B, the second slide support 13 is attached between the second beam 71y and the base surface 3s. The second sliding bearing 13 is a rigid sliding bearing that supports the second beam 72y. The second sliding bearing 13 is configured in the same manner as the first sliding bearing 12, and slides on the base 36 provided on the base portion 3a, the sliding plate 37 laid on the base 36, and the sliding plate 37. A sliding member 38 that is in surface contact with the sliding member 38, a rigid body 39 that holds the sliding member 38, and a connecting member 40 that connects the rigid body 39 and the second beam 72y are provided.

  The base 36 and the sliding plate 37 are fixed to the base portion 3a with bolts or the like. The sliding plate 37 is made of, for example, stainless steel. The sliding member 38 is made of, for example, PTFE resin. The connecting member 40 is fixed to the rigid body 39 and the second beam 71y by bolts or the like. The second sliding bearing 13 has a unique friction coefficient as a single unit. The second sliding bearing 13 has a friction coefficient different from that of the first sliding bearing 12. The friction coefficient of the second sliding bearing 13 (friction coefficient between the sliding plate 37 and the sliding member 38) is a larger value than that of the first sliding bearing 12, and is 0.05, for example.

  As shown in FIGS. 3A and 3B, the rigid body 39 of the second sliding bearing 13 is thicker than the rigid body 34 of the first sliding bearing 12. On the other hand, the distance between the first beam 72x and the base surface 3s is the same as the distance between the second beam 72y and the base surface 3s. Therefore, the height of the connecting member 40 of the second sliding bearing 13 is set lower than that of the connecting member 35 of the first sliding bearing 12.

  As shown in FIG. 2, the first sliding bearings 12 are arranged along the Y direction, which is the extending direction of the first beam 71x, at the lower part of the first beam 71x. The first sliding bearings 12 are attached at equal intervals from one end to the other end in the Y direction of the first beam 71x. The second sliding bearings 13 are arranged along the Y direction, which is the extending direction of the second beam 71y, below the second beam 71y. The second sliding bearings 13 are attached at equal intervals from one end to the other end in the Y direction of the second beam 71y.

  The first and second sliding bearings 12 and 13 are arranged at positions corresponding to the columns of the rack 5 on the base surface 3s (on the XY plane). The number of first sliding bearings 12 attached to one first beam 72x is equal to the number of second sliding bearings 13 attached to one second beam 72y. Here, six first sliding supports 12 are attached to the first beam 72x, and six second sliding supports 13 are attached to the second beam 72y. Each of the plurality of first sliding supports 12 and each of the plurality of second sliding supports 13 are located at the same position in the Y direction. That is, when viewed from the X direction, the plurality of first sliding supports 12 and the plurality of second sliding supports 13 are arranged so as to overlap each other.

  Returning to FIG. 1, the rubber support 14 supports the rack 5 via the gantry 7 and returns the rack 5 displaced in the X direction and the Y direction to the original position. The rubber support 14 includes an elastic member. The rubber bearing 14 is a laminated rubber, for example. In the rubber support 14, damping rubber and steel plates to which high damping properties are imparted by adding an additive to natural rubber are alternately laminated. The rubber bearing 14 is connected to each of the gantry 7 and the base portion 3a via a flange plate.

  As shown in FIG. 2, the rubber support 14 is provided at the lower end of the first beam 71 x intersecting the lower beam 72 on one end side (left side in the drawing) in the X direction and at both ends in the Y direction. The rubber bearing 14 is located between a pair of first sliding bearings 12 adjacent in the Y direction. The rubber bearings 14 are provided at both ends in the Y direction below the second beam 71y intersecting the lower beam 72 on the other end side (right side in the drawing) in the X direction. The rubber bearing 14 is located between a pair of second sliding bearings 13 adjacent in the Y direction. Furthermore, the rubber bearing 14 is provided at the center of the X direction and the Y direction and below the lower beam 72. These rubber bearings 14 are located below the traveling path 22 of the stacker crane 20 (see FIG. 1).

  As described above, in the rack apparatus 10, the friction coefficient of the first sliding support 12 provided in parallel with the first beam 71x and the friction coefficient of the second sliding support 13 provided in parallel with the second beam 71y are different from each other. . Thus, by combining the first and second sliding bearings 12 and 13 having different friction coefficients, the friction coefficient (so-called average friction coefficient) of the entire rack 5 with respect to the base surface 3 s is changed from the friction coefficient of the first sliding bearing 12 and the first sliding bearing 12. It can be adjusted to a desired value between the friction coefficient of the two-slide bearing 13. For example, by combining the first sliding bearing 12 with a friction coefficient of 0.01 and the second sliding bearing 13 with a friction coefficient of 0.05, the average friction coefficient with respect to the base surface 3s of the gantry 7 and the rack 5 is set to 0. .03 can be adjusted. Thereby, the friction damping force (friction force) acting on the rack 5 can be adjusted, and the seismic isolation performance required for the rack device 10 can be obtained.

  The plurality of sliding supports attached to the first beam 71x are all the first sliding support 12, and the friction damping force acting on the first beam 71x is generated by the first sliding support 12. The plurality of sliding bearings attached to the second beam 71y are all the second sliding bearings 13, and the friction damping force acting on the second beam 72y is all generated by the second sliding bearing 13. Therefore, each frictional damping force acting on each of the first beam 71x and the second beam 71y can be made uniform. Therefore, when the rack 5 is shaken and an external force such as seismic force is applied, for example, warping or bending of the first beam 71x and the second beam 71y can be suppressed, and the twist generated in the rack 5 can be suppressed. It becomes. Therefore, according to the rack device 10, it is possible to suppress the twist of the rack 5 when the rack 5 is shaken and obtain the required seismic isolation performance.

  In the rack device 10, the lower beam 71 extends across the plurality of racks 5 and in a direction intersecting with the longitudinal direction of the racks 5. In this case, in a large-scale rack apparatus 10 including a plurality of racks 5, when the rack 5 is shaken, the rack 5 can be prevented from being twisted and the required seismic isolation performance can be obtained.

  In the rack apparatus 10, the number of the first slide supports 12 attached to one first beam 71x is equal to the number of the second slide supports 13 attached to one second beam 71y. In the Y direction, each of the plurality of first sliding supports 12 and each of the plurality of second sliding supports 13 are located at the same position. Thereby, when a swing in the X direction is applied to the rack 5, the rotational moment of the horizontal plane acting on the gantry 7 is suppressed by the frictional damping force of the first and second sliding bearings 12, 13, and the torsion generated in the rack 5 is suppressed. Can be further suppressed.

  In the rack apparatus 10, the first beam 71x and the second beam 71y are alternately arranged. According to this structure, the 1st and 2nd sliding bearings 12 and 13 are arrange | positioned in the state mixed alternately in the X direction. Therefore, the above-described effect of adjusting the friction coefficient by combining the first and second sliding bearings 12 and 13 having different friction coefficients can be surely exhibited.

  In the rack 5, a plurality of support columns are arranged in a wide range uniformly, and the sliding supports are uniformly arranged in a wide range corresponding to the support columns. In the present embodiment, the arrangement uniformity of the sliding bearings in the rack 5 can be used to effectively combine the first and second sliding bearings 12 and 13 having different friction coefficients and adjust the average friction coefficient as a whole.

  As mentioned above, although embodiment of this invention was described, this invention is not limited to the said embodiment.

  In the embodiment described above, the gantry 7 may include other beams and girders in addition to the lower beam 71 and the lower beam 72. The gantry 7 may include other reinforcing members. For example, in the gantry 7, a brace may be provided in a space defined by a pair of adjacent lower beams 71 and a pair of adjacent lower beams 72.

  In the above embodiment, the first beams 71x and the second beams 71y are alternately juxtaposed, but the arrangement of the first beams 71x and the second beams 71y is not particularly limited. The first beam 71x, the first beam 71x, the second beam 71y, and the second beam 71y may be continuously arranged in this order. The second beam 71y, the second beam 71y, the first beam 71x, and the first beam 71x may be continuously arranged in this order. The first beam 71x, the second beam 71y, the second beam 71y, and the first beam 71x may be continuously arranged in this order. The second beam 71y, the first beam 71x, the first beam 71x, and the second beam 71y may be continuously arranged in this order.

  In the above embodiment, the same number of first beams 71x and second beams 71y may be included in a predetermined number of lower beams 71 arranged in series. In the above embodiment, the same number of the first beams 71x and the second beams 71y are provided. However, the first beams 71x may be provided more than the second beams 71y, or conversely, may be provided less. Good.

  In addition to the first and second sliding bearings 12 and 13, the above embodiment may include one or a plurality of other sliding bearings. For example, it is attached between the third beam of the plurality of lower beams 71 and the base surface 3s, has a friction coefficient different from that of the first and second sliding supports 12, 13, and the extending direction of the third beam And a plurality of third sliding bearings arranged along the same line. In this case, the first beam, the second beam, and the third beam are juxtaposed so that the arrangement along the X direction is repeated in this order, whereby the first, second, and third sliding bearings are They may be juxtaposed so that the arrangement along the X direction is repeated in order.

  3 s: base surface, 5: rack, 10: rack device, 12: first sliding bearing, 13: second sliding bearing, 71: lower beam, 71x: first beam, 71y: second beam.

Claims (4)

A rack provided on the base surface and having a plurality of loading units;
A plurality of lower beams juxtaposed below in the vertical direction of the rack;
A plurality of first sliding bearings mounted between a first beam of the plurality of lower beams and the base surface, and arranged along the extending direction of the first beam;
A plurality of lower beams are attached between the second beam and the base surface, have a friction coefficient different from that of the first sliding bearing, and are arranged along the extending direction of the second beam. With a second sliding bearing ,
Only the first sliding bearing is attached to the first beam,
The rack apparatus , wherein only the second sliding bearing is attached to the second beam . A plurality of the racks;
The rack apparatus according to claim 1, wherein the lower beam extends across a plurality of the racks and extends in a direction crossing a longitudinal direction of the racks. The number of the first sliding bearings attached to one of the first beams is equal to the number of the second sliding bearings attached to one of the second beams,
The rack device according to claim 1 or 2, wherein each of the plurality of first sliding bearings and each of the plurality of second sliding bearings are located at the same position in the extending direction of the lower beam.   The rack apparatus according to any one of claims 1 to 3, wherein the first beam and the second beam are alternately juxtaposed.

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