JP5370654B2 - Seismic isolation device for load support - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To unitize a base-isolating device for load support which is effective for enhancing quake resistance of a load supporting stand for supporting a load in a load storage partition of a rack as well as providing excellent base-isolating effects which might last for a long period. <P>SOLUTION: The base-isolating device for load support is composed of a support pole body 16 standing on support members 7a, 7b, a movable body 17 covering the support pole body 16 and slidably supported on an upper surface of the support pole body 16, and an energizing member 19 intervening between an annular peripheral wall 18 provided for the movable body 17 and the support pole body 16 for energizing/holding the movable body 17 at a nearly concentric position to the support pole body 16. An upper-end support surface 16b of the support pole body 16 is formed of synthetic resin material, and a lower supported surface 17b of the movable body 17 which contacts the upper-end support surface 16b of the support pole body 16 is formed of a metal material. <P>COPYRIGHT: (C)2010,JPO&amp;INPIT

Description

  The present invention relates to a load-supporting seismic isolation device used as a load-supporting base such as a load-storage rack or as a supporting means for a load-supporting base.

  The seismic isolation device for load support used as a support means for a load support platform such as a load storage rack is designed so that the load being stored is placed on the load support platform when the rack swings in the direction before and after loading / unloading of the load storage section. Is used to prevent an accident from falling to the path side of the rack (the side having the traveling path of the loading / unloading crane provided along the rack). A load supporting base that supports the load in the load storage section and a support member that protrudes from the bulkhead frames on the left and right sides of the load storage section and supports the load support base. A support column that also serves as a base or supports a movable body that supports the load support base in a slidable manner in a horizontal direction, and a biasing member that biases and holds the movable body at a substantially central position of the sliding region. Composed. Thus, in this conventional seismic isolation device for load support, as described in Patent Document 1, the support column body and the urging member are arranged in parallel at a distant position on the support member. Because it was not unitized as a seismic isolation device, it not only took time to mount the support member on the support member, but it also resisted the urging force of the movable body in all horizontal directions around the support column. And could not be supported slidably. Therefore, as shown in Non-Patent Document 1, the movable body is formed in a disk shape that covers the support column body and is slidably supported in all horizontal directions, and an annular peripheral wall that surrounds the support column body of the movable body; A unitized seismic isolation device was conceived in which an urging member such as a spiral spring was interposed between the support pillars.

JP 2008-51238 A

Japanese Patent Application No. 2006-318076

  Thus, in the configuration described in Non-Patent Document 1, the large-diameter movable body is supported by the small-diameter support column body, and the peripheral portion of the movable body is greatly projected from the support column body. When a load is loaded on a load support pedestal supported by a seismic isolation device or a load support pedestal also used as a movable body of the seismic isolation device, the bottom surface of the load dropped on the load support pedestal is completely horizontal. However, because of the tilting of the movable body, one peripheral portion of the movable body may be pushed down by a load and the movable body may be tilted with respect to the support column. In such a case, in order to reduce the friction between the upper end support surface of the support column and the lower supported surface of the movable unit slidably supported by the support column, the upper end support surface of the support column and the movable unit are reduced. When both the lower supported surface of the movable body or the lower supported surface of the movable body is formed of a synthetic resin plate having a small friction coefficient, the peripheral edge of the upper end support surface of the support column is aligned with the lower supported surface of the movable body. The part will bite and be damaged. Such damage on the lower supported surface of the movable body becomes a factor that hinders smooth horizontal relative movement between the support column and the movable body, and the expected seismic isolation effect cannot be expected.

The object of the present invention is to provide a load-supporting seismic isolation device that can solve the above-mentioned conventional problems, and the seismic isolation device according to claim 1 is an embodiment described later. When indicated by a reference numeral, the support column 16 standing on the support members 7a and 7b and the upper support surface 16b of the support column 16 are slidably supported by covering the support column 16 The movable body 17 is interposed between the support pillar body 16 and the annular peripheral wall 18 provided on the movable body 17 and the support column body 16 to urge the movable body 17 to a substantially concentric position. In the load-supporting seismic isolation device including the biasing member 19 to be held, the upper end support surface 16 b of the support column 16 is formed of a synthetic resin material, and the movable column abuts on the upper end support surface 16 b of the support column 16. load support to the lower supported surface 17b of the body 17 made by forming a metallic material In the seismic isolation devices,
The support column 16 is composed of a metal column main body 16a fixed on the support members 7a and 7b and a synthetic resin presser plate 25 attached to the upper end of the column main body 16a. A small-diameter step portion 22 is formed, and a ring-shaped cushioning material 23 that protrudes from the column main body 16a is externally fitted to the small-diameter step portion 22, and the periphery of the presser plate 25 is the ring-shaped cushioning material 23. The ring-shaped cushioning material 23 is fixed so as to cover the upper surface, and the upper surface thereof forms the upper end supported surface 16b of the support column 16 .

  When the seismic isolation device according to the present invention is implemented, the peripheral corner portion 16c of the upper end support surface 16b of the support column 16 may be formed in a curved surface with an appropriate curvature as described in claim 2. it can. Further, as described in claim 3, the lower supported surface 17b of the movable body 17 can be formed by the lower surface itself of the metal movable body 17, and as described in claim 4. It can be formed on the lower surface of the metal slide plate 28 stretched on the lower surface of the movable body 17.

  The seismic isolation device for load support according to the present invention includes, for example, a load support base disposed in each load storage section of a load storage rack, and partition walls on both left and right sides of the load storage section so as to support the load support base. Or the movable body itself of the seismic isolation device of the present invention disposed on the support member can be used as a load support base. When the rack swings in the forward / backward direction of loading / unloading of the load storage section when an earthquake occurs, an urging member is attached between the support column on the support member side that swings back and forth integrally with the rack and the movable body on the load support side. Relative sliding movement against the force occurs, and the movable body on the side supporting the load does not swing in the front-rear direction at the same speed and the same amplitude as the rack.

  Therefore, when the rack swings to the open passage side, the load swings to the passage side integrally with the rack via the movable body, so that the load slides on the load support base due to inertia to the passage side. There is no risk of falling to the aisle side, and the desired seismic isolation effect is obtained. Since the relative movement in the front-rear direction between the support column on the support member side and the movable body on the load support side is performed against the elasticity of the biasing member, the biasing member is moved after the relative movement. By returning elastically, the movable body that supports the load automatically returns to the origin position on the support member.Therefore, unless the load slides on the load support base, the position of the load will not change unexpectedly in the front-rear direction. The load can be safely and continuously stored. Of course, since the movable body is slidably supported in all horizontal directions with respect to the support column, a seismic isolation effect can be expected even when the rack swings in the horizontal and horizontal directions or in an oblique direction. The fear of falling off the support base and causing cargo collapse is also eliminated.

  Thus, according to the configuration of the present invention described in claim 1, the urging member is interposed between the support column and the movable body covering the support column, and only the support column is mounted on the support member. Since the installation of the seismic isolation device is completed, the installation work of the seismic isolation device can be performed easily and easily, and the assembly cost can be reduced. In addition, the lower supported surface of the movable body is made of metal, and the upper support surface of the support column that supports the lower supported surface of the movable body is made of synthetic resin. By selecting a material with a small coefficient of friction for the synthetic resin material to be formed, the horizontal relative movement between the support column and the movable body can be performed smoothly, thus ensuring the desired seismic isolation effect. Can be obtained.

  Furthermore, compared to the case where the lower supported surface of the movable body is made of synthetic resin and the support body upper end support surface of the small-diameter support column is made of metal or synthetic resin, due to the cause as described above Even when the large-diameter movable body is inclined with respect to the support column body, the lower supported surface of the movable body is made of metal, so that the peripheral edge of the upper end support surface of the small-diameter support column body is There is no risk of damaging the lower supported surface. Therefore, the horizontal horizontal movement between the support column and the movable body is not hindered by scratches on the lower supported surface of the movable body, so that the desired seismic isolation effect can be ensured for a long time. Can be expected continuously. Of course, it is conceivable that the peripheral edge of the upper end support surface of the support column is indented by being pressed against the lower metal supported surface of the movable body. Since there is almost no fear that the scratch hinders smooth horizontal relative movement between the support column and the movable body, there is no practical problem.

  In particular, according to the configuration of the second aspect, compared with the case where the peripheral edge of the upper end support surface of the small-diameter support column body is square, there is a risk that the lower support surface of the movable body may bite into and be damaged. Not only will there be almost nothing, but the peripheral edge of the upper support surface of this support column will almost never suffer dents due to pressure contact with the lower metal support surface of the movable body. It can be achieved more reliably.

  In addition, according to the structure of Claim 3, the upper end support of a support pillar body is normally utilized only by finishing the lower surface of the movable body comprised with a metal material smoothly, and using the said movable body as it is. The lower supported surface supported by the surface can be formed and can be carried out at a low cost. Conversely, according to the configuration of claim 4, regardless of the material constituting the movable body and the properties of the lower surface. The lower supported surface on the movable body side can be formed of, for example, a stainless steel plate or a metal plate with appropriate plating, which is smooth and has low frictional resistance.

In addition, by providing a ring-shaped cushioning material that fits around the support column and protrudes from the column main body of the support column, even if the rack suddenly shakes greatly, the ring of the support column and the movable unit When the ring-shaped cushioning material is installed, the ring-shaped cushioning material can be used to prevent impacts from colliding directly with the ring-shaped cushioning material. According to the configuration of the present invention described in claim 1, it is only necessary to externally fit a ring-shaped cushioning material to the upper-end small-diameter step portion of the column main body and attach a presser plate from above. Not only can the mounting be performed easily and easily, but the upper support surface of the support column in the present invention can be formed by simply making the presser plate necessary for fixing the ring-shaped cushioning material made of synthetic resin. Less and less expensive Capable of implementing the present invention. Of course, the load resistance of the seismic isolation device as a whole can be improved as compared with the case where the support column body of the support column is made of synthetic resin.

Fig. A is a transverse plan view showing a part of a load storage rack, and Fig. B is a front view of the same portion. A figure is a top view which shows the load support apparatus provided in one load storage division, B figure is the A section enlarged view of A figure. It is a front view of a load support apparatus. It is the XX sectional view taken on the line of FIG. Fig. A is a longitudinal front view showing the seismic isolation device, and Fig. B is an exploded longitudinal front view of the seismic isolation device. It is a disassembled cross-sectional top view which shows a seismic isolation apparatus. It is a vertical side view which shows the modification of the movable body of a seismic isolation apparatus. It is a top view which shows the one side of the load support apparatus in 2nd embodiment. It is a side view which shows the one side of the load support apparatus in 3rd embodiment. A figure and B figure are front views of the principal part which show the modification of the seismic isolation apparatus of this invention, respectively.

  FIG. 1 shows a part of a rack to which the load supporting apparatus of the present invention is applied. Reference numeral 1 denotes a load storage section arranged in a grid pattern in both the upper, lower, left and right directions. The partition frame 2 is vertically arranged at appropriate intervals in the direction, and the load support device 3 is attached to the partition frame 2 at appropriate intervals in the vertical direction. Each partition frame 2 has a lattice structure in which a pair of front and rear support members 4a and 4b are connected to each other by a connection member 5. On the back side of the load storage compartment 1, the rear support members 4b of each partition frame 2 are On the front side of the load storage section 1, that is, on the traveling path side of the loading / unloading crane that loads and unloads the load on the load storage section 1, with respect to the load storage section 1. It is known that the front column members 4a of the partition wall frames 2 are connected to each other by a horizontal connecting material (not shown) at a level that does not interfere with loading and unloading.

  The load support device 3 disposed at the lower end position of each load storage section 1 includes a pair of left and right support members 7a and 7b attached to the left and right partition walls 2 of the load storage section 1, and each support member 7a and 7b. It consists of a seismic isolation device 8 that also serves as a total of four load support bases arranged at two places on the front and rear.

  Hereinafter, the specific structure will be described. As shown in FIGS. 2 to 4, the pair of left and right support members 7 a, 7 b are parallel to the loading / unloading front / rear direction (X direction) with respect to the load storage compartment 1 and the width of the partition frame 2 Is attached to the front end of each arm member 11a, 11b, and the arm members 11a, 11b connected to the front and rear ends of the front direction bar member 10 at right angles outward. Mounting members 12a and 12b. The attachment members 12a and 12b have a height that is approximately twice the height of the arm members 11a and 11b. The attachment members 12a and 12b with the arm members 11a and 11b attached to the lower half of the attachment members 12a and 12b are shown in FIG. 2B. As shown in the figure, one bolt 13 and a nut 14 inserted between the mounting holes provided in the column members 4a and 4b in a state of being fitted to the column members 4a and 4b of the partition wall frame 2 from the side, Thus, the column members 4a and 4b are fixed at predetermined height positions. The arm members 11a and 11b are provided with a groove-shaped member, and the concave groove portions thereof are opposed to each other, the front and rear bar member 10 is formed of an angle member, and one horizontal belt-like plate portion 10a is provided with the arm members 11a and 11b. And the other vertical belt-like plate portion is used in such a direction as to overlap the tips of the arm members 11a and 11b. 3 shown in FIG. 3 is a bolt insertion hole provided in the upper half of the attachment members 12a and 12b.

  The four seismic isolation devices 8 have the same structure respectively disposed in the vicinity of both front and rear ends on the front and rear direction bar-shaped member 10 in each of the support members 7a and 7b, and as shown in FIGS. A support column 16 standing on the front-rear bar member 10, a movable body 17 slidably supported on the support column 16 in all horizontal directions, and the movable body so as to surround the support column 16. And an urging member 19 that is interposed between an annular peripheral wall 18 provided on the rim 17 and the support column 16 and urges and holds the movable body 17 at a substantially central position within its sliding range. .

  The specific structure of each seismic isolation device 8 will be described. The support column 16 is a columnar metal column main body 16a, a ring-shaped cushioning material 23 made of an elastic material such as butyl rubber sponge, and a circular synthetic resin. And presser plate 25. The column main body 16a includes a screw hole 20 provided upward from the lower end surface, a small diameter step portion 21 formed on the lower end peripheral surface, and a small diameter step portion 22 formed on the upper end peripheral surface. A ring-shaped cushioning material 23 is externally fitted to the stepped portion 22 from above, and a presser plate 25 is attached to the upper end surface of the support pillar 16 with a plurality of circumferential screws 24 in order to fix the ring-shaped cushioning material 23. The circular and smooth upper surface of the presser plate 25 constitutes an upper end support surface 16b made of synthetic resin of the support column 16 that slidably supports the movable body 17. Thus, the support column 16 (the column main body 16a) is inserted into the vertical mounting hole 26 provided in the horizontal belt-like plate portion 10a of the front / rear direction rod-shaped member 10 upward from the lower side. 27 is screwed and fastened to the screw hole 20 so as to be fixed on the horizontal belt-like plate portion 10a of the bar member 10 in the front-rear direction. The ring-shaped cushioning material 23 attached to the column main body 16a has an outer diameter that projects evenly outward in the circumferential direction from the column main body 16a.

  The movable body 17 is made of metal in which the circular annular peripheral wall 18 is integrally connected from the periphery of the circular top plate portion 17a, and an annular recess for receiving a spring is formed on the inner peripheral surface of the annular peripheral wall 18. A groove 30 is formed. When the movable body 17 is supported on the upper end support surface 16b of the support column 16 (the upper surface of the presser plate 25), the annular concave groove 30 is higher than the lower end small-diameter step portion 21 of the column main body 16a and is a ring-shaped cushioning material. It is provided at a position lower than 23. The biasing member 19 includes a spiral spring 31 that is flat in an unloaded state, and the outer diameter of the spiral spring 31 in the unloaded state is that of the annular groove 30 for receiving a spring provided in the annular peripheral wall 18. The diameter is larger than the diameter, and the inner diameter is substantially the same as the diameter of the small diameter step portion 21 of the support column 16.

  As described above, when the support column 16 is fixed on the horizontal belt-like plate portion 10a of the longitudinal bar member 10, the inner peripheral portion 31a of the spiral spring 31 is fitted to the lower end small-diameter step portion 21 of the column main body 16a. In this state, the column main body 16a is fixed on the horizontal belt-like plate portion 10a with a bolt 27. When the movable body 17 is put on the support pillar 16, the outer peripheral portion 31 b of the spiral spring 31 is fitted into the annular groove 30 of the annular peripheral wall 18. That is, by pulling up the outer peripheral portion 31b of the spiral spring 31 with respect to the inner peripheral portion 31a and simultaneously reducing the outer diameter by constricting the spring material in the spiral direction, the outer peripheral portion 31b of the spiral spring 31 is formed into an annular peripheral wall. 18 annular grooves 30 are fitted. As a result, the spiral spring 31 has an axial elastic stress that causes the outer peripheral portion 31b to lower to the level of the inner peripheral portion 31a and an expanded elastic stress that causes the outer peripheral portion 31b to return to the original outer diameter. The movable body 17 is pulled down by the elastic stress in the axial direction of the spiral spring 31, and the circular and smooth metal lower supported surface 17b of the top plate portion 17a is located on the support column 16 side. The movable body 17 (annular peripheral wall 18) is substantially concentric with the support column 16 due to the elastic stress in the diameter increasing direction of the spiral spring 31 while being pressed against the upper end support surface (upper surface of the pressing plate 25) 16 b made of synthetic resin. The bias is held at a fixed position.

  In the above embodiment, the four seismic isolation devices 8 are arranged at positions that can support the four corners of the load W stored in the load storage section 1 and supported by the support members 7a and 7b. The movable body 17 is slidably supported in all horizontal directions by the support pillars 16 on the side of the support members 7a and 7b, and is urged and held at a substantially central position within the sliding range by the spiral spring 31 (the urging member 19). However, each is configured to also serve as the load support base 32. In other words, the four load support bases 32 (movable bodies 17) are supported by the support members 7a and 7b via the support pillars 16 and the urging members 19 (spiral springs 31) of the seismic isolation device 8, respectively. A load supporting device 3 is configured.

  According to the above configuration, when a horizontal external force that is strong enough to deform the spiral spring 31 in the horizontal direction acts relatively between the support column 16 and the movable body 17, The movable body 17 is a synthetic resin on the support column body 16 side within the range until the outer peripheral surface of the ring-shaped cushioning material 23 on the support column body 16 side comes into pressure contact with the inner peripheral surface of the annular peripheral wall 18 on the movable body 17 side. The spiral spring 31 can be relatively moved in all horizontal directions while being deformed in the horizontal direction with relative sliding between the upper end supporting surface 16b made of metal and the lower supported surface 17b made of metal on the movable body 17 side. it can.

  Therefore, the load W is loaded into the empty load storage section 1 by the loading / unloading crane and loaded in the front-rear direction (X direction), and as shown by a virtual line in FIG. In the load supporting state in which the four corners of the bottom of the pallet (when loaded) are supported on the four load supporting bases 32 (the movable body 17 of the seismic isolation device 8), the rack is, for example, in the load storage section 1 due to an earthquake or the like. Support members 7a and 7b integrated with the rack support the four load support bases 32 (movable bodies 17 of the seismic isolation device 8) that support the load W when they swing in the unloading back and forth direction (X direction). The spiral springs 31 of the seismic isolation devices 8 are oscillated in the same direction while alternately deforming in the opposite direction against the elasticity via the column 16. That is, the load W supported on the four load support bases 32 (the movable body 17 of the seismic isolation device 8) hardly swings if the speed and amplitude of the swing are within the assumed range, or the support members 7a, It will swing with a small amplitude later than the swing of 7b. Then, as the movable body 17 and the support pillar 16 move relatively horizontally, the elastic reaction force in the push-back direction acting on the spiral spring 31 increases as the support pillar 16 approaches the annular peripheral wall 18 of the movable body 17. Therefore, a damping effect against shaking is also obtained, and as a result, the desired seismic isolation effect is obtained. Of course, since the spiral spring 31 of each seismic isolation device 8 attempts to automatically return so that the movable body 17 is substantially concentric with the support column 16, when the swing of the rack stops, Each load support base 32 (the movable body 17 of the seismic isolation device 8) is automatically returned to an intended fixed position, that is, substantially concentric with respect to the support column 16 by the elastic restoring force. Therefore, unless the load W slides and moves with respect to the load support base 32 (the movable body 17 of the seismic isolation unit 8), the position of the load W in the load storage section 1 does not change.

  Further, due to the presence of the ring-shaped cushioning material 23 incorporated in each seismic isolation device 8, the support column 16 and the annular peripheral wall 18 of the movable body 17 collide with each other in the radial direction vigorously when the rack is greatly shaken. In such a situation, the ring-shaped cushioning material 23 is sandwiched and compressed between the support column 16 and the annular peripheral wall 18 of the movable body 17, absorbs the impact, and the load support base 32 (the seismic isolation device 8). It is possible to prevent the load W from slipping and moving on the load support base 32 (the movable body 17 of the seismic isolation device 8) due to the reaction. Safety can be increased.

  The above-mentioned seismic isolation action is realized by smoothly sliding relative to each other against the frictional resistance between the upper support surface 16b on the support column 16 side and the lower supported surface 17b on the movable body 17 side. However, the upper end support surface 16b on the support column body 16 side is composed of a pressing plate 25 made of synthetic resin, and the lower supported surface 17b on the movable body 17 side is the lower surface of the metal movable body 17 itself. From the above, the presser plate 25 constituting the upper end support surface 16b on the support column 16 side is molded with a synthetic resin having a small friction coefficient, and the lower side surface of the metal movable body 17 is finished smoothly, thereby supporting the support plate 25. Friction resistance between the upper end support surface 16b on the column body 16 side and the lower supported surface 17b on the movable body 17 side can be sufficiently reduced to achieve the desired seismic isolation function. Of course, as shown in FIG. 7, a metal slide plate 28 that covers almost the entire area of the circular lower side surface is attached to the circular lower side surface of the top plate portion 17 a of the movable body 17 with a plurality of screws 29 in the circumferential direction. The lower side surface of the slide plate 28 may be a metal lower supported surface 17b on the movable body 17 side. As the slide plate 28, a stainless steel plate or a plated metal plate can be used.

  The configuration of the support members 7a and 7b is not limited to that of the above embodiment. For example, as shown in FIG. 8, the arm members 11a and 11b are attached to the mounting members 12a so that the tip portions are positioned directly below the seismic isolation devices 8 arranged at positions where the bottom corners of the load W can be supported. 12b can be extended horizontally inward, and the seismic isolation device 8 (support column 16) can be directly mounted on the tip of the arm members 11a, 11b, thereby omitting the longitudinal bar 10. In this case, as shown in the figure, the arm members 11a and 11b are fixed to the short members 33 projecting from the mounting members 12a and 12b at right angles and laterally, and the length is fixedly extended inward from the front end of the short members 33 in a horizontal oblique direction. However, the arm members 11a and 11b made of a single member may be directly fixed to the mounting members 12a and 12b so as to extend horizontally inward.

  Furthermore, in the above embodiment, the movable body 17 of each seismic isolation device 8 is also used as the load support base 32 as it is, but as shown in the phantom line of FIG. 8 and FIG. 9, the seismic isolation device 8 of the present invention. Can also be used as means for supporting both front and rear end portions of a pair of left and right load support bases 35 formed of front and rear direction members arranged in parallel on the left and right sides of the load storage section 1. Of course, the movable bodies 17 of the pair of front and rear seismic isolation devices 8 are connected and integrated by a connecting member having an upper surface substantially flush with the upper surface of the movable body 17, so that the upper surface of the connecting member and the pair of front and rear It is also possible to configure a load support base with the upper surface of the movable body 17 of the seismic device 8. 8 and 9, the support members 7a and 7b include support members 7a and 7b composed of only a pair of front and rear arm members 11a and 11b for supporting the pair of front and rear seismic isolation devices 8 separately. As shown in the previous embodiment, support members 7a and 7b configured to support a longitudinal bar member 10 that supports a pair of front and rear seismic isolation devices 8 at two front and rear positions by a pair of front and rear arm members 11a and 11b. Also good.

  The embodiment shown in FIG. 10 is an embodiment of the invention according to claim 2, and the peripheral corner portion 16 c of the synthetic resin upper end support surface (upper surface of the pressing plate 25) 16 b of the support column 16 is curved. Forming. 10A is a curved surface having a large curvature radius on the side close to the center of the upper end support surface 16b, and the curved peripheral edge portion 16c changes such that the radius of curvature decreases with increasing distance from the center of the upper end support surface 16b. And the outer edge of the longitudinal cross-sectional shape of the peripheral corner | angular part 16c is formed so that it may become a substantially 1/4 elliptical arc. Further, the peripheral corner 16c in FIG. 10B is a curved peripheral corner 16c that is an arc having a large radius of curvature with the entire outer edge of the longitudinal sectional shape having one center. Compared to the chamfered curvature used for finishing parts, the curved surface has a large curvature. With this configuration, the effect of the invention according to claim 2 as described above can be expected.

  In order to increase the safety of the three-dimensional automatic warehouse shelf in the event of an earthquake, it can be utilized as the load support itself used in the load storage space of the shelf or as a means for supporting the load support.

DESCRIPTION OF SYMBOLS 1 Load storage section 2 Bulkhead frame 3 Load support apparatus 4a, 4b Support | pillar member 5,6 Connection member 7a, 7b Support member 8 Seismic isolation device 9 Load support stand (whole)
DESCRIPTION OF SYMBOLS 10 Back-and-forth direction bar-shaped member 11a, 11b Arm member 12a, 12b Mounting member 16 Support column body 16a Column body 16b Synthetic resin upper end support surface (upper surface of presser plate)
16c Peripheral corner portion formed on the curved surface of the upper end support surface made of synthetic resin 17 Movable body (load support base 32)
17a Top plate part of movable body 17b Lower supported surface made of metal on the movable body side 18 Annular peripheral wall of movable body 19 Biasing member 21, 22 Small diameter step part of supporting column body 23 Ring-shaped cushioning material 25 Presser made of synthetic resin Plate 28 Metal slide plate 30 Annular groove 31 Spiral spring (biasing member)
32 Load support base (movable body 17 of seismic isolation device)
35 Load support base composed of longitudinal members

Claims (4)

A support column erected on the support member; a movable body which is slidably supported on the upper support surface of the support column body; and an annular peripheral wall provided on the movable body. A load-supporting seismic isolation device comprising a biasing member interposed between the support column and biasing and holding the movable body substantially concentrically with respect to the support column. In the seismic isolation device for supporting a load , the upper support surface is formed of a synthetic resin material, and the lower supported surface of the movable body contacting the upper support surface of the support column is formed of a metal material .
The support column body is composed of a metal column main body fixed on the support member and a synthetic resin presser plate attached to the upper end of the column main body, and a small diameter step portion is formed on the upper end of the column main body. The small-diameter step is fitted with a ring-shaped cushioning material that protrudes from the column main body, and the presser plate covers the ring-shaped cushioning material around the ring-shaped cushioning material and fixes the ring-shaped cushioning material. A seismic isolation device for load support, which forms the upper supported surface of the support column .   The seismic isolation device for load support according to claim 1, wherein a peripheral corner portion of an upper end support surface of the support column is formed into a curved surface.   The seismic isolation device for load support according to claim 1 or 2, wherein the lower supported surface of the movable body is formed of a lower surface of a metal movable body.   The seismic isolation device for load support according to claim 1 or 2, wherein the lower supported surface of the movable body is formed of a lower surface of a metal slide plate stretched on the lower surface of the movable body.

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