JP2009280377A - Load supporting device of rack for load storage - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To enhance earthquake resistance by interposing an earthquake-isolating means between a pair of right and left load supporting stands for supporting a load in a load storage space of a rack and supporting members which are projected from right and left bulkhead frames of the load storage space to support the load supporting stands. <P>SOLUTION: Each of four earthquake-isolating units 8 which are arranged at the positions for supporting four corners of a load W and supported by supporting members 7a, 7b comprises supporting pillars 16 erected from the supporting members 7a, 7b, a movable body 17 to be slidably supported by the supporting pillars 16 in every horizontal direction, and an urging member 19 which is interposed between an annular circumferential wall of the movable body 17 and the supporting pillars 16. In the front and rear earthquake-isolating units 8 located on the right and left sides of the load storage space 1, the annular circumferential walls of the movable body 17 are connected to each other at their upper ends by a connection member 32 flush with a top surface of the movable body 17, and each of a pair of right and left load supporting stands 33a, 33b comprises the connection member 32 and the movable body 17 of the front and rear earthquake-isolating units 8 connected to each other by the connection member 32. <P>COPYRIGHT: (C)2010,JPO&INPIT

Description

  The present invention relates to a load support device having a seismic isolation function for a load storage rack.

In this type of load storage rack, when a rack shakes in the front / rear direction of loading / unloading of a load storage section in the event of an earthquake, the load being stored slides on the load support base and the rack side (rack Is used to prevent an accident that falls to the side of the traveling passage of the crane for loading and unloading provided along the road, and generally supports the load in the load storage section of the rack. And a support member that protrudes from the bulkhead frames on both the left and right sides of the load storage section and supports the load support table, and a seismic isolation means interposed between the support member and the load support table. Has been. Thus, in this type of load support device, as described in Patent Document 1, when the load support base is composed of a pair of left and right front and rear bar members that are long in the front and rear direction, the front and rear When the direction bar-shaped member (load support base) is used as a movable body biased and held at a fixed position by the elastic member of each seismic isolation unit, the load support base is composed of a front and rear direction bar-shaped member with a narrow lateral width. Therefore, the seismic isolation effect is obtained substantially only in the length direction of the load support base, that is, in the front-rear direction. Therefore, in order to enhance the seismic isolation effect, when the load support base is slidably supported in all horizontal directions, as described in Non-Patent Document 1, a pair of left and right load supports composed of front and rear bar members is used. The two front and rear portions of each table are supported by a rack-side support member via a large-diameter disk-shaped seismic isolation unit.
JP 2008-51238 A Japanese Patent Application No. 2006-318076

  However, the configuration described in Non-Patent Document 1 has a three-layer structure including a longitudinal bar-shaped member constituting the load support base, a seismic isolation unit below the load support base, and a support member below the load support base. There was a problem that the height of the supporting device was increased. Since the load storage rack is formed with multistage load storage sections, and the load support apparatus having the above-described configuration is provided in each stage of the load storage section, the height of the load support apparatus is increased. When the number of storage compartments is the same, the height of the entire rack is increased, and when the height of the entire rack is limited, the number of stages of the load storage compartment is reduced. Will fall.

  SUMMARY OF THE INVENTION An object of the present invention is to provide a load support device for a load storage rack capable of solving the conventional problems as described above, and the load support device according to claim 1 is an implementation described later. When the reference numerals of the forms are attached, the pair of left and right load support bases 33a and 33b that support the load W in the load storage section 1 of the rack and the partition frame 2 on both the left and right sides of the load storage section 1 are provided. From the supporting members 7a and 7b for supporting the load supporting bases 33a and 33b, and the base isolation means (the base isolation unit 8) interposed between the supporting members 7a and 7b and the load supporting bases 33a and 33b. In the load supporting apparatus, the seismic isolation means includes four seismic isolation units 8 arranged at positions where the four corners of the load W stored in the load storage section 1 can be supported and supported by the support members 7a and 7b. Each seismic isolation unit 8 includes the support portion A support column 16 standing from 7a and 7b, a movable body 17 slidably supported by the support column 16 in all horizontal directions, and provided on the movable body 17 so as to surround the support column 16; And an urging member 19 interposed between the annular peripheral wall 18 and the support column 16 for urging and holding the movable body 17 at a substantially central position within its sliding range. Among the seismic isolation units 8, the two front and rear seismic isolation units 8 located on the left and right sides of the load storage compartment 1 are connected so that the annular peripheral walls 18 of the movable body 17 are flush with the upper surface of the movable body 17. Each of the pair of left and right load support bases 33 a and 33 b is connected to each other by a member 32, and is constituted by the connecting member 32 and the movable body 17 of the two front and rear seismic isolation units 8 connected by the connecting member 32. .

  When carrying out the load supporting device for a load storage rack according to the present invention, the height of the connecting member 32 is the height of the movable body 17 of the seismic isolation unit 8 as described in claim 2. It is desirable to use a member having a lateral width smaller than that of the movable body 17 on the center line connecting the movable bodies 17 of the two front and rear seismic isolation units 8.

  In addition, as described in claim 3, the support members 7a and 7b include four arm members 11a and 4b attached to support members 4a and 4b at the front and rear ends of the partition frames 2 on the left and right sides of the load storage section 1, respectively. 11b and a pair of left and right front and rear bar members 10 extending between the front and rear arm members 11a and 11b and extending in the front and rear direction of loading and unloading. The seismic isolation unit 8 can be disposed. In this case, as described in claim 4, the arm members 11a and 11b have a vertically long cross-sectional shape whose height is higher than the height of the front-rear direction bar-shaped member 10, and the front-rear direction bar-shaped member 10 is It can be constructed between the pair of front and rear arm members 11a and 11b so that the upper surface is lower than the upper surfaces of the arm members 11a and 11b.

  Further, as described in claim 5, the support members 7a and 7b include four arm members 11a and 4b, which are attached to support members 4a and 4b at both front and rear ends of each of the left and right partition walls 2 of the load storage section 1. 11b, supporting the seismic isolation unit 8 on the tip of each arm member 11a, 11b, and the arm members 11a, 11b forming a front-rear pair are not connected to each other.

  According to the load supporting device for a load storage rack according to the present invention, when the rack swings back and forth in the loading / unloading direction of the load storage section when an earthquake occurs, the support of the seismic isolation unit on the support member side that swings back and forth integrally with the rack is supported. A relative sliding movement occurs against the urging force of the urging member of the seismic isolation unit between the column and the load support base (movable body of the four seismic isolation units) supporting the load. The load support base (movable body of the four seismic isolation units) that supports the rack does not sway in the front-rear direction at the same speed and the same amplitude as the rack. Therefore, when the rack swings to the opened passage side, the load support base (the movable body of the four seismic isolation units) and the load on the load support base swing together to the passage side, so that the load is loaded by inertia. There is no risk of sliding to the passage side on the support base and dropping to the passage side in some cases, and the desired seismic isolation effect can be obtained. Since the relative movement in the front-rear direction between the support column of the base isolation unit on the support member side and the load support base (movable body of the four base isolation units) is performed against the elasticity of the biasing member, After the relative movement, the urging member elastically returns, so that the load support base (the movable body of the four seismic isolation units) automatically returns to the origin position on the support member. As long as the load does not slide on the movable body), the position of the load does not change unexpectedly in the front-rear direction, and the load can be safely and continuously stored. Of course, the load support base (movable body of the four seismic isolation units) is supported so as to be slidable in all horizontal directions with respect to the support pillars. A seismic isolation effect can be expected, and the possibility that a part of the area around the load falls off the load support base and collapses will be eliminated.

  Thus, according to the configuration of the present invention as set forth in claim 1, the load support base is not constituted by a pair of left and right longitudinal bars that are long in the longitudinal direction of loading / unloading as in the prior art. 4 seismic isolation unit movable bodies arranged at positions that can support the four corners of the load stored in the rack, that is, slidable in all horizontal directions on the support pillars erected on the rack side support member Since the four movable bodies that are supported also serve as a load support base, there is no need for a longitudinal bar-shaped member dedicated to the load support base that supports both front and rear ends with the movable bodies of the two front and rear seismic isolation units. Not only can the load support device be reduced in weight and cost, but the overall height of the support device can be reduced by changing from the conventional three-layer structure to the two-layer structure of the support member and the seismic isolation unit on it. be able to. Therefore, the height of the entire rack can be reduced when the number of stages of the load storage section is the same, and when the height of the entire rack is constant, the number of stages of the load storage section can be increased to increase the efficiency of use of the warehouse space. Can be increased.

  In addition, according to the configuration of the present invention, the movable bodies of the two seismic isolation units that form a pair of front and rear are integrated by connecting the annular peripheral walls of the movable bodies with a connecting member, and the connecting member has an upper surface thereof. Is flush with the upper surface of the movable body, and also functions as a load support member between the two front and rear movable bodies in the pair of left and right load support bases. Even if either end falls off the movable body of a pair of front left and right seismic isolation units or the movable body of a pair of rear left and right seismic isolation units, both ends of the load are loaded by the connecting member. It is possible to prevent falling off from the support table, and the safety is greatly improved. In addition, the stability of the movable body of each seismic isolation unit that also serves as a load support base is enhanced, and the load can be safely loaded and unloaded.

  In addition, according to the structure of Claim 2, the thin pipe material and shape steel which cannot be used as a load support stand with a conventional structure are utilized as a connection member, and the whole load support apparatus can be comprised lightweight and cheaply. it can.

  Moreover, according to the structure of Claim 3, a seismic isolation unit (load support stand) can be arrange | positioned by the space | interval of the front-back direction sufficiently narrower than the depth (length in the front-back direction of loading / unloading) of the load storage section. It becomes easy. Moreover, the load bearing performance of the support member can be enhanced. In this case, according to the structure of Claim 4, the height of support can be made still lower. In other words, the arm member protruding in a cantilevered manner from the column member of the partition wall frame needs to have a sufficiently high downward bending strength, so its height must be increased to have a vertically long cross-sectional shape. In the configuration in which both ends of the longitudinal bar-like member that supports the seismic isolation unit are mounted and fixed on the distal end portion of the brace member, the height of the load supporting device is increased. On the other hand, since the both ends of the bar-shaped member that supports the seismic isolation unit are supported by the arm member, the height can be reduced as compared with the arm member. With this configuration, it is possible to reduce the height of the entire support device while ensuring the load bearing performance necessary for the entire support member.

  Furthermore, according to the structure of Claim 5, compared with the structure of Claim 3 or 4 which uses the front-back direction rod-shaped member which supports a seismic isolation unit, the structure of the whole load support apparatus is simplified. The load storage rack for light loads can be configured at low cost.

  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. It is delimited by a partition frame 2 standing vertically in the direction, and delimited by a load support device 3 of the present invention 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 passage side of the loading / unloading crane that loads and unloads the load storage section 1, the load is stored in the load storage section 1. It is known that the front strut members 4a of the partition wall frames 2 are connected to each other by a horizontal connecting member (not shown) at a level that does not interfere with taking in and out.

  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 unit 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 about 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. It should be noted that 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 longitudinal bar member 10 is formed of an angle member, and one horizontal belt-like plate portion of the arm members 11a and 11b. The other vertical belt-like plate portion is used in such a direction that it overlaps the top surface of the tip and 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 units 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 unit 8 will be described. The support column 16 is cylindrical, and has a screw hole 20 provided upward from the lower end surface, a small-diameter step portion 21 formed on the lower peripheral surface, A small-diameter step portion 22 formed on the upper peripheral surface, a ring-shaped cushioning material 23 made of an elastic material such as butyl rubber sponge externally fitted to the small-diameter step portion 22, and the ring-shaped cushioning material 23 are fixed. And a circular metal pressing plate 25 attached to the upper end surface of the support column 16 with a plurality of circumferential screws 24, and the circular smooth upper surface 25a of the pressing plate 25 slidably supports the movable body 17. It is configured as follows. Thus, the support column 16 is inserted into the screw hole 20 with a single bolt 27 inserted upward from below into the vertical mounting hole 26 provided in the horizontal strip 10a of the bar member 10 in the front-rear direction. By being screwed and fastened to each other, it is fixed on the horizontal strip plate portion 10a of the bar member 10 in the longitudinal direction. The ring-shaped cushioning material 23 attached to the support pillar 16 has an outer diameter that projects outwardly from the support pillar 16 in the circumferential direction.

  The movable body 17 is a structure in which the circular annular peripheral wall 18 is integrally connected from the periphery of the circular top plate portion 17a, and the sliding surface that covers the entire lower surface of the circular lower surface on the circular lower side surface of the top plate portion 17a. A slide plate 28 made of synthetic resin having a small friction coefficient is attached by a plurality of screws 29 in the circumferential direction. An annular groove 30 for receiving a spring is formed on the inner peripheral surface of the annular peripheral wall 18. 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 bar member 10 in the front-rear direction, the inner peripheral portion 31a of the spiral spring 31 is fitted to the lower end small-diameter step portion 21, The support column 16 is fixed on the horizontal strip plate 10a with bolts 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 force in the axial direction of the spiral spring 31 so that the lower circular sliding surface 28 a of the slide plate 28 is a circular shape of the presser plate 25 that is the upper end surface of the support column 16. The movable body 17 (annular peripheral wall 18) is urged and held at a fixed position substantially concentric with the support column 16 by the elastic stress in the diameter increasing direction of the spiral spring 31 while being pressed against the smooth upper surface 25a.

  Of the total four seismic isolation units 8 attached to the support members 7a and 7b, the two front and rear seismic isolation units 8 arranged on the left and right sides of the load storage section 1 are connected to each other by the connecting member 32 between the annular peripheral walls 18. Have been integrated. The connecting member 32 has a height lower than that of the movable body 17 of the seismic isolation unit 8 (height of the annular peripheral wall 18) and a lateral width that is narrower than a lateral width (outer diameter) of the movable body 17. Therefore, on the center line connecting the movable bodies 17 of the two seismic isolation units 8 at the front and rear, the upper surface of the movable body 17 and the upper end of the connecting member 32 are arranged between the annular peripheral walls 18 of both movable bodies 17. Has been. In the illustrated example, a round pipe material is used as the connecting member 32. However, in addition to the square pipe material, various shape steels such as a groove shape material and an angle material having an open portion facing downward can be used. Further, both ends of the connecting member 32 can be fixed to the outer peripheral surface of the annular peripheral wall 18 of the movable body 17 by welding. For example, a mounting plate is welded to both ends of the connecting member 32 and the mounting plate is attached to the movable body. It can also be screwed to the outer peripheral surface of the 17 annular peripheral walls 18. In this case, a vertical flat surface for attaching the connecting member may be processed on the outer peripheral surface of the annular peripheral wall 18 of the movable body 17 so that the attachment can be easily performed.

  In the above embodiment, the four seismic isolation units 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. 8 is a movable body that is slidably supported in all horizontal directions on the support column 16 on the support members 7a and 7b side, and is urged and held at a substantially central position within the sliding range by a spiral spring 31 (biasing member 19). 17, of the four seismic isolation units 8, the movable bodies 17 of the two front and rear seismic isolation units 8 disposed on the left and right sides of the load storage compartment 1, and a connecting member that connects the two front and rear movable bodies 17 to each other. 32 is a load support device 3 in which each of a pair of left and right load support bases 33a and 33b 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 circular smoothing on the support column body 16 side within a 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. With relative sliding between the upper surface 25a and the lower circular sliding surface 28a 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.

  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. When loaded, the four corners of the bottom of the pallet are racked by an earthquake or the like in a load support state in which the four corners of the four seismic isolation units 8 constituting the pair of left and right load support bases 33a and 33b are supported. For example, when the load storage section 1 swings in the front / rear loading / unloading direction (X direction), the support members 7a and 7b integrated with the rack are provided to the movable bodies 17 of the four seismic isolation units 8 supporting the load W. The spiral springs 31 of the seismic isolation units 8 are oscillated in the same direction while alternately deforming in the opposite direction against the elasticity via the support column 16. That is, the load W supported on the movable body 17 of the four seismic isolation units 8 hardly swings or lags behind the swing of the support members 7a and 7b if the speed and amplitude of the swing are within the assumed range. And swing with a small amplitude. The elastic reaction force in the push-back direction acting on the spiral spring 31 increases as the movable body 17 and the support pillar body 16 relatively move horizontally and the support pillar body 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, The movable body 17 of each seismic isolation unit 8 is automatically returned to its intended fixed position, that is, substantially concentric with respect to the support column 16 by the elastic restoring force. Therefore, the position of the load W in the load storage section 1 does not change unless the load W slides and moves with respect to the load support bases 33a and 33b (the movable body 17 of each seismic isolation unit 8).

  Although the movable bodies 17 of the two front and rear seismic isolation units 8 constituting the pair of left and right load support bases 33a and 33b are connected by a connecting member 32, the movable body 17 extends over the two front and rear movable bodies 17. Since two loads W are loaded, in the load supporting state, the two movable bodies 17 are integrated with the load W even if the connecting member 32 is not provided, and the movement of the movable body 17 during the seismic isolation action is as follows. There is no difference from the case where the connecting member 32 is not provided. However, the upper end of the connecting member 32 is flush with the upper surface of the movable body 17 and functions as a load support member between the two front and rear movable bodies 17 in the pair of left and right load support bases 33a and 33b. Thus, any of the front and rear ends of the load W may fall off the movable body 17 of the pair of front left and right seismic isolation units 8 or the movable body 17 of the pair of rear left and right seismic isolation units 8 due to a large swing of the rack. Even in such a situation, the connecting member 32 can prevent the front and rear ends of the load W from falling off the load support bases 33a and 33b. Further, the presence of the connecting member 32 prevents the two front and rear movable bodies 17 from moving differently depending on how the external force is applied during loading and unloading, and the stability of each movable body 17 is improved.

  The above-mentioned seismic isolation action is realized by smoothly sliding relative to each other against the frictional resistance between the circular smooth upper surface 25a on the support column 16 side and the lower circular sliding surface 28a on the movable body 17 side. Therefore, the frictional resistance force between the circular smooth upper surface 25a on the support column 16 side and the lower circular sliding surface 28a on the movable body 17 side must be configured to be as small as possible. For this reason, in the above-described embodiment, the circular smooth upper surface 25a on the support column 16 side is formed by the metal pressing plate 25, and the lower circular sliding surface 28a on the movable body 17 side is made of a synthetic resin having a small friction coefficient. Although the slide plate 28 is formed, the holding plate 25 that forms the circular smooth upper surface 25a on the support column 16 side is made of a synthetic resin having a small friction coefficient, and the metal movable body 17 is formed without using the slide plate 28. The lower surface of the top plate portion 17a can be used as the lower circular sliding surface as it is. In this case, a stainless steel plate or a plated plate may be stretched on the lower surface of the top plate portion 17a of the metal movable body 17. Further, the ring-shaped cushioning material 23 is not essential, but by incorporating this ring-shaped cushioning material 23, when the rack is greatly shaken, the support column 16 and the annular peripheral wall 18 of the movable body 17 are in the radial direction. It is possible to improve safety by avoiding a collision.

  Since the arm members 11a and 11b constituting the support members 7a and 7b are subjected to a large downward bending force, they have a vertically long cross-sectional shape having a sufficient height as shown in FIGS. In this embodiment, as shown in FIGS. 3 and 4, the horizontal belt-like plate portion 10 a of the longitudinal bar member 10 that supports the seismic isolation unit 8 is used as the brace. Since the upper surfaces of the members 11a and 11b are overlapped and fixed, the height of the load supporting device 3 from the lower surface of the arm members 11a and 11b to the upper surface of the seismic isolation unit 8 becomes relatively large. In order to improve this point, it can be configured as shown in FIGS.

  That is, the longitudinal bar-shaped member 10 made of, for example, a square pipe material, which has a bending strength higher than that of the angle member shown in the previous embodiment, although the height is nearly half lower than the height of the vertically long cross-section arm members 11a and 11b. The support members 7a and 7b are configured by inserting both ends of the longitudinal bar member 10 into the arm members 11a and 11b made of lateral groove members and mounting and fixing them on the lower horizontal plate portion. If the seismic isolation unit 8 is disposed on the upper surface of the longitudinal bar 10 that is sufficiently lower than the upper surfaces of the arm members 11a and 11b, the movable body 17 of the seismic isolation unit 8 that also serves as the load support bases 33a and 33b is provided. The upper surface is lowered, and the height of the load supporting device 3 can be lowered by this lowered amount. Reference numeral 34 denotes a plate fixed so as to close the groove space at the ends of the arm members 11a and 11b made of lateral groove members, and the outer surface of the bar member 10 in the front-rear direction is in contact with the inside of the plate 34. The both ends of the bar member 10 in the front-rear direction are fixed to the ends of the arm members 11a and 11b.

  The configuration of the support members 7a and 7b is not limited to that of the above embodiment. For example, as shown in FIGS. 11 and 12, the arm members 11 a and 11 b are positioned so that the distal end portion is located at a position directly below each seismic isolation unit 8 disposed at a position where the bottom corners of the load W can be supported. It is possible to extend the mounting members 12a and 12b horizontally and obliquely inward, and directly attach the seismic isolation unit 8 (supporting column 16) onto the distal ends of the arm members 11a and 11b, thereby omitting the longitudinal bar member 10. . In this case, as shown in FIG. 11, the arm members 11a and 11b are fixedly extended horizontally and inwardly from the short member 35 projecting from the mounting members 12a and 12b at right angles and horizontally and from the tip of the short member 34. However, the arm members 11a and 11b made of one member may be directly fixed to the mounting members 12a and 12b so as to extend obliquely inward in the horizontal direction.

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. It is a longitudinal front view which shows a seismic isolation unit. It is a disassembled longitudinal front view which shows a seismic isolation unit. It is a bottom view which shows the movable body (load support stand) of a seismic isolation unit. It is a disassembled cross-sectional top view which shows a seismic isolation unit. It is a top view which shows the one side of the load support apparatus in 2nd embodiment. FIG. 10 is a side view of FIG. 9. It is a top view which shows the one side of the load support apparatus in 3rd embodiment. It is a side view of FIG.

Explanation of symbols

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 unit 9 Load support stand (whole)
DESCRIPTION OF SYMBOLS 10 Front-rear direction rod-shaped member 11a, 11b Arm member 12a, 12b Mounting member 16 Support pillar 17 Movable body (load support stand)
18 annular peripheral wall 19 of movable body 19 biasing member 21, 22 small diameter step portion 23 of support column ring-shaped cushioning material 25 holding plate 25a circular smooth upper surface 28 of support column body slide plate 28a lower circular sliding surface 30 of movable body annular Groove 31 Spiral spring (biasing member)
32 connecting members 33a, 33b load support base 35 short member 36 long member

Claims (5)

  A pair of left and right load support bases for supporting a load in the load storage section of the rack, a support member projecting from the bulkhead frames on the left and right sides of the load storage section to support the load support base, and the support member and the load support In the load supporting device comprising the seismic isolation means interposed between the base and the base, the seismic isolation means is disposed at a position capable of supporting the four corners of the load stored in the load storage section and supported by the support member. Each of the seismic isolation units includes a support column erected from the support member, a movable body supported by the support column slidably in all horizontal directions, and the support column. A biasing member that is interposed between an annular peripheral wall that is provided downward from the movable body so as to surround the body and the support column body, and biases and holds the movable body at a substantially central position within the sliding range. Of the four seismic isolation units The two front and rear seismic isolation units located on the left and right sides of the load storage compartment are configured such that the annular peripheral walls of the movable body are connected to each other by a connecting member whose upper end is flush with the upper surface of the movable body. A load support device for a load storage rack, wherein each of the bases is configured by the connecting member and a movable body of two seismic isolation units connected by the connecting member.   The connecting member has a height lower than the height of the movable body of the seismic isolation unit and a lateral width that is narrower than a lateral width of the movable body, on a center line connecting the movable bodies of the two front and rear seismic isolation units. The load supporting device for a load storage rack according to claim 1, which is arranged.   The support members include four arm members attached to the strut members at the front and rear ends of each of the left and right partition walls on the left and right sides of the load storage section, and the left and right sides extending in the front / rear direction of the loading / unloading provided between the arm members forming the front and rear pairs The load support for a load storage rack according to claim 1 or 2, comprising a pair of longitudinal bar-like members, wherein the seismic isolation unit is disposed at two front and rear positions of the left and right pair of longitudinal bar-like members. apparatus.   The arm member has a vertically long cross-sectional shape whose height is higher than the height of the front-rear direction bar-shaped member, and the front-rear direction bar-shaped member is arranged so that its upper surface is lower than the upper surface of the arm member. The load supporting device for a load storage rack according to claim 3, wherein the load supporting device is installed between a pair of arm members.   The support member is composed of four arm members attached to support members at both front and rear ends of each of the left and right partition walls of the load storage compartment, and the seismic isolation unit is supported on the front end of each arm member. The load supporting device for a load storage rack according to claim 1 or 2, wherein the pair of arm members are not connected to each other.

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