JP2008051238A - Load support device for load storage rack - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To enhance earthquake resistance by adapting a base isolation structure in a load storage rack having a lateral pair of load receiving memers 3 long in load taking-in/out direction which are horizontally erected inside both lateral barrier wall frames 2 of a load storing section 1. <P>SOLUTION: A support member 9 provided continuously from both the lateral barrier wall frames 2 is disposed on the lower side of each load receiving member 3, and a support means 12 for supporting the load receiving member 3 so as to be slidable within a fixed area at least in the longitudinal direction thereof and an energizing means 14 for energing and holding the load receiving member 3 at a fixed position within the slidable area are disposed between the support member 9 and the load receiving member 3. The energizing means 14 includes at least one energization unit 11A composed of a lower spring receiving member 23 protruded upward from the support member 9, an upper spring receiving member 25 protruded downward from the load receiving member 3, and a coil spring 26 both upper and lower ends of which are fitted to both the spring receiving members 23 and 25. <P>COPYRIGHT: (C)2008,JPO&INPIT

Description

  The present invention relates to a load support device for a load storage rack in which a pair of left and right load receiving members that are long in the front-rear depth direction of the load storage section are horizontally installed inside the left and right partition walls of the load storage section.

In this type of load storage rack, when the rack swings in the front / rear depth direction (unloading / unloading direction) of the load storage section, the load being stored can be placed on the aisle side of the rack (the loading / unloading provided along the rack). There is an accident that the load receiving member slides and falls to the side of the traveling crane. As one means for preventing such an accident, a pair of left and right load receiving members included in each load storage section is considered to have a seismic isolation structure. For example, as described in Patent Document 1, the seismic isolation structure in the load support device of this type of load storage rack is configured such that each load receiving member is attached to a support member provided continuously from both left and right partition walls of the load storage section. As a biasing means for supporting the load receiving member slidably in its length direction (front and rear depth direction of the load storage section) and biasing and holding the load receiving member at a fixed position in the slidable region, the length of the load receiving member is A coil spring parallel to the vertical direction was provided. That is, a coil spring that presses and urges the load receiving member backward (opposite to the side having the passage) with respect to the support member, and a coil spring that presses and urges the load receiving member forward (side with the passage) with respect to the support member. Are arranged in series, and the load receiving member is held in place by the pressing biasing force of both coil springs.
Japanese Patent No. 3729316 (Japanese Patent Laid-Open No. 2000-226111)

  In the biasing means in the conventional configuration described in Patent Document 1, two coil springs and two outer spring seats that receive the outer end portions of both coil springs by a support member as components constituting one biasing unit. And an inner spring receiving seat that receives the inner ends of both coil springs on the load receiving member side, and a long bolt and nut that supports two coil springs in series in a horizontal direction. In addition, since the urging unit is exposed to the lateral sides of the load receiving member and the support member, not only the space occupied in the plan view of the entire load support device is increased, but also due to dust adhesion and contact with other objects. Inconvenience is also considered.

  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 a reference numeral of the form is attached, a pair of left and right load receiving members 3 that are long in the front-rear depth direction (X direction) of the load storage section 1 are installed horizontally inside the left and right partition walls 2 of the load storage section 1. A load storage device for a load storage rack, wherein a support member 9 connected from the left and right partition wall frames 2 is disposed below the load receiving member 3, and the support member 9 and the load receiving member 3 are arranged. Between the support means 12 for slidably supporting the load receiving member 3 at least within a certain range in the front-rear depth direction of the load storage section 1, and urging the load receiving member 3 to a fixed position in the slidable region. And a biasing means 14 for holding. The step 14 includes a lower spring receiving member 23 projecting upward from the support member 9, an upper spring receiving member 25 projecting downward from the load receiving member 3, and both upper and lower spring receiving members 23, 25. It is the structure provided with at least 1 urging | biasing unit 11A which consists of the coil spring 26 which fitted.

  When carrying out the load support device for a load storage rack according to the present invention, the support means 12 includes a horizontal direction perpendicular to the length direction of the load receiving member 5 as described in claim 2. The load receiving member 3 can be slidably supported within a certain range on a two-dimensional plane. In this case, it is preferable that the slidable area of the left and right horizontal load receiving member 3 orthogonal to the length direction of the load receiving member 3 is shorter than the slidable area of the load receiving member 3 in the length direction.

  According to a third aspect of the present invention, the load receiving member 3 is composed of a lower open gate-shaped member 8, and the support means 12 and the biasing means 14 are formed in a lower open groove-shaped space of the load receiving member 3. It can be configured to be contained within.

  Further, as described in claim 4, the support means 12 includes at least two support units 11A and 11B arranged in the length direction of the load receiving member 3, and each of the support units 11A and 11B includes: A vertical support pillar 17 fixedly projectingly provided on one of the support member 9 and the load receiving member 3 and a tip of the support pillar 17 provided on the other member are relatively slid. It can comprise from the supported surface part 18a which contact | abuts freely. In this case, as described in claim 5, a slide restricting member 19 having a recess 20 in which the support column 17 is loosely fitted is provided on the member side provided with the supported surface portion 18a. The sliding of the load receiving member 3 can be limited by the contact between the inner surface 20 a of the concave portion 19 and the supporting column 17. According to a sixth aspect of the present invention, a plurality of spheres 33 that are in rolling contact with the supported surface portion 18a are held at the tip of the support column 17 of the support unit 31 so as to be freely rotatable. Thus, the rolling support portion 34 can be configured.

  Further, as described in claim 7, when the left and right partition wall frames 2 of the load storage compartment 1 are provided with a pair of front and rear support members 4a and 4b, the support members 4a and 4b are opened on the inner sides facing each other. The supporting member 9 can be attached to a pair of front and rear arm members 7 that are attached to the side wall plate portions of the front and rear support members 4a and 4b and extend to the load storage section 1 side.

  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 depth direction (the length direction of the load receiving member) of the load storage section when an earthquake occurs, the support member swings back and forth integrally with the rack. The relative movement against the urging force of the urging means occurs between the load receiving member supporting the load and the load receiving member, and the load receiving member supporting the load is integrated with the rack in the front-rear direction at the same speed and the same amplitude. No longer shakes. Therefore, when the rack swings to the opened passage side (forward), the load receiving member and the load on the load receiving member swing forward together, and the load slides on the load receiving member due to inertia. Depending on the situation, there is no risk of falling to the aisle side, and the desired seismic isolation effect can be obtained. The relative movement in the front-rear direction between the support member and the load receiving member is realized by bending the middle part of the vertical coil spring of the biasing unit constituting the biasing means in the front-rear direction against elasticity. After the relative movement, the coil spring elastically returns to the vertical state, so that the load receiving member automatically returns to the origin position on the support member. Therefore, unless the load slides on the load receiving member, the load position is unpredictable in the front-rear direction. The load can be safely and continuously stored.

  Thus, according to the configuration of the present invention described in claim 1, the load receiving member is interposed between the support member provided continuously from the left and right partition walls of the load storage section and the load receiving member positioned thereon. Support means and urging means for urging and holding the load receiving member at a fixed position in the slidable region are disposed, so that a coil spring or the like is attached to the lateral side of the load receiving member in plan view as in the prior art. Compared with the case where the biasing means protrudes, the occupied space in plan view of the entire load supporting device is reduced to the same extent as the conventional load supporting device having no seismic isolation structure, which helps to increase the storage efficiency of the entire rack. .

  The urging unit constituting the urging means also bends the middle part of the vertical coil spring in the front-rear direction against the elasticity during the relative movement in the front-rear direction between the support member and the load receiving member, and the reaction force Since the load receiving member is returned to the origin position with respect to the support member, the wire diameter and diameter of the coil spring are increased in accordance with the weight of the load, and a large origin returning force (centering force) is increased. In spite of being able to realize the return to origin, only the coil spring and a pair of upper and lower spring receiving members are required as the parts to be used, and the number of parts can be reduced and the construction can be made at low cost. It can be arranged without difficulty in the limited space. In other words, since the biasing means of the above-described type is used, the biasing means can be configured using the limited space between the support member and the load receiving member.

  The urging unit constituting the urging means is a method in which the middle part of the vertical coil spring is bent in the horizontal direction against elasticity when the horizontal relative movement between the upper and lower members is performed. The same origin return action can be expected regardless of the relative movement direction of 360 degrees in any horizontal direction. Therefore, as described in claim 2, the supporting means for supporting the load receiving member can slide the load receiving member within a predetermined range on a two-dimensional plane including a horizontal direction perpendicular to the length direction of the load receiving member. Even if the rack is slightly swung in the horizontal direction (horizontal direction perpendicular to the length direction of the load receiving member) due to an earthquake or the like, the load will move horizontally on the load receiving member. A seismic isolation effect that can prevent accidents such as sliding off the load receiving member on one side or coming into contact with the bulkhead frame can be additionally obtained, and can be used as a rack with higher safety.

  Further, according to the configuration of claim 3, the supporting means and the urging means are completely accommodated in the load receiving member, and not only the protection effect for these both means is enhanced, but also the left and right sides of the load receiving member. The wall portion can be used as a stopper member that restricts horizontal movement of the left and right sides of the load receiving member, and can be used to reduce the number of parts.

  As the support means for slidably supporting the load receiving member, various configurations such as a combination of a rail and a roller can be adopted, but according to the configuration of claim 4, a vertically supporting column body and It is a very simple configuration consisting of a combination with a supported surface portion, and can be implemented easily and inexpensively. Further, since the relative movement direction between the supporting column and the supported surface portion is not limited, it is particularly effective as a supporting means when the configuration according to claim 2 is adopted. In this case, according to the configuration described in claim 5, it is only necessary to add one slide limiting member to one support unit, and to relate to the position of the support unit in the length direction of the load receiving member, the width of the load receiving member, and the like. In addition, the slidable area on the two-dimensional plane of the load receiving member can be reliably regulated. Furthermore, according to the structure of Claim 6, the horizontal sliding of the load receiving member with respect to the support member can be performed lightly and smoothly, and the elastic force of the coil spring used in the biasing unit of the biasing means is reduced. As a result, the coil spring can be miniaturized.

  Moreover, according to the structure of Claim 7, even when a seismic force (amplitude) is large and sufficient seismic isolation effect cannot be expected only by relative movement of the load receiving member within the allowable slide region with respect to the support member, The support member itself is made to move relative to the rack in the front-rear and horizontal directions by using the elastic deformation in the lateral direction of the side wall plate portion of the column material constituting the partition wall frame of the rack, thereby supplementing the seismic isolation effect. be able to. Therefore, the coil spring used in the urging unit of the urging means is useful for downsizing.

  FIG. 1 shows a basic configuration of a rack to which the load supporting apparatus of the present invention can be applied. Reference numeral 1 denotes a load storage section arranged in a grid pattern in both the upper, lower, left and right directions, and adjacent loads in the left and right lateral directions. A partition frame 2 is erected vertically between the storage compartments 1, and the load storage compartments 1 adjacent to each other in the vertical direction are separated by a pair of left and right load receiving members 3.

  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 connecting 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 material (not shown) at a level that does not interfere with loading and unloading. The pair of left and right load receiving members 3 are rod-shaped members that are long in the loading / unloading direction of the load storage section 1, that is, the front-rear depth direction (X direction) of the load storage section 1, and the front and rear ends thereof are partition walls adjacent to the outside. It is supported by a pair of front and rear arm members 7 attached to both front and rear support members 4a and 4b of the frame 2.

  Hereinafter, one embodiment of the present invention will be described in detail. Each load receiving member 3 is composed of a lower gate member 8 as shown in FIGS. 2B and 5, and the lower side of each load receiving member 3. As shown in FIG. 2, the support member 9 parallel to the load receiving member 3 is attached to the inner ends of a pair of front and rear arm members 7 attached to the front and rear support members 4a and 4b of the partition wall frame 2 adjacent to the outside. It is erected by being fixed to. As is well known in the art, the outer ends of the pair of front and rear arm members 7 are fixed to an attachment member 10 that is attached to both front and rear support members 4a and 4b so that the height can be freely changed. Both the front and rear support members 4a and 4b have a cross-sectional shape with the inner sides facing each other open, and the mounting member 10 has a rectangular cross-section projecting sideways of the support members 4a and 4b as shown in FIG. 2C. It is locked by a pin 10a in a state of being fitted on the side wall plate portion 4c.

  The support member 9 is made of a mold material formed by bending a belt-like plate, and has a top plate portion 9a that is narrower than the portal member 8 constituting the load receiving member 3 and parallel to the top plate portion 8a. I have. Between the top plate portion 9a of the support member 9 and the top plate portion 8a of the gate-shaped member 8 constituting the load receiving member 3, a support means 12 comprising two front and rear support units 11A and 11B and two front and rear attachments are provided. The urging means 14 comprising the urging units 13A and 13B is interposed. The two front and rear support units 11A and 11B have the same structure and are disposed in the vicinity of both front and rear ends of the load receiving member 3, and approach the inside of both the support units 11A and 11B so as to have the same structure. , 13B are arranged.

  As shown in FIGS. 4 to 6, the support units 11 </ b> A and 11 </ b> B include a support column body 17 that is vertically attached to the top plate portion 9 a of the support member 9 by a mounting bolt 16 via a shim plate 15. A sliding plate 18 attached to the bottom surface of the top plate portion 8a of the load receiving member 3 (gate-shaped member 8) so as to be positioned directly above the supporting column body 17, and attached to the lower side of the sliding plate 18. The slide limiting member 19 is configured. The support column 17 is formed of a cylindrical body, and the tip end surface 17 a is formed in a protruding spherical shape whose center is on the center line of the support column 17, and the tip end surface 17 a is formed on the lower side of the slide plate 18. The load receiving member 3 is supported by slidingly contacting the supported surface portion 18a. The slide limiting member 19 is an annular body that surrounds the periphery of the support column 17, and the recess 20 in which the support column 17 is loosely fitted is an oval that is long in the length direction of the load receiving member 3. When the side surface of the support column 17 abuts on the inner surface 20 a of the recess 20, the horizontal sliding of the load receiving member 3 with respect to the support column 17 is limited.

  The slide restricting member 19 and the slide plate 18 are formed by the mounting screws 21 (see FIG. 6) and the load receiving member 3 (the gate member 8) that penetrate the four corners of the slide restricting member 19 and the slide plate 18 upward from below. Both are integrally attached to the load receiving member 3 by screw holes provided in the top plate portion 8a. Naturally, the mounting screw 21 does not protrude upward from the upper surface (load supporting surface) of the load receiving member 3.

  As shown in FIG. 7, the urging units 13 </ b> A and 13 </ b> B include a lower spring receiving member 23 that is vertically attached by a mounting bolt 22 on the top plate portion 9 a of the support member 9, and a load receiving member 3 (a gate member). 8) an upper spring receiving member 25 attached by a mounting screw 24 to the lower side of the top plate portion 8a, and a vertically oriented coil spring 26 whose upper and lower ends are fitted on the upper and lower spring receiving members 23, 25. Yes. Both the upper and lower spring receiving members 23 and 25 are cylindrical and the tip portions are narrowed to a truncated conical shape, and when the support member 9 and the load receiving member 3 move in parallel relative to each other in the horizontal direction, Rubber linings 23a and 25a are provided on the peripheral surface where the coil spring 26 bent in the horizontal direction may come into contact. The upper spring receiving member 25 is attached with a mounting screw 24 from the upper side of the top plate portion 8a of the load receiving member 3 (the gate-shaped member 8). The head does not protrude upward from the upper surface (load support surface) of the top plate portion 8a of the load receiving member 3 (gate shape member 8).

  According to the above configuration, the load receiving member 3 receives a supported surface portion 18a of the slide plate 18 on the load receiving member 3 side at the front end surface 17a of the support column 17 of the two front and rear support units 11A and 11B. The horizontal position of the load receiving member 3 is such that the coil springs 26 of the two front and rear urging units 13A and 13B are vertically self-supporting, so that the coil spring 26 and the upper and lower ends thereof are internally fitted. It is held at a fixed position with respect to the support member 9 via the upper and lower spring receiving members 23 and 25. When the load is not placed on the pair of left and right load receiving members 3, the pushing force of the coil spring 26 exceeds the weight on the load receiving member 3 side, and the supporting column body 17 and the sliding plate 18 of the support units 11A and 11B When the load receiving member 3 is lifted to a level where a slight gap is generated between the load receiving member 3 and the load is placed on the pair of left and right load receiving members 3, the load receiving member 3 is connected to the front and rear two support units 11A and 11B. You may comprise so that it may be supported by the fixed pillar 17 at a fixed level.

  In any case, when the load is placed across the pair of left and right load receiving members 3, the load is received by the support member 9 via the support pillars 17 of the two support units 11A and 11B. . At this time, the coil springs 26 of the two front and rear urging units 13A and 13B are self-supporting vertically. In such a state, when a horizontal external force that is strong enough to bend the coil spring 26 in the horizontal direction acts relatively between the load receiving member 3 and the support member 9, the load receiving member 3 and the support member 9 are As long as the support column 17 of the support units 11A and 11B comes into contact with the inner surface 20a of the recess 20 of the slide limiting member 19, the tip surface 17a of the support column 17 and the supported surface portion of the slide plate 18 are supported. The coil spring 26 can be relatively moved horizontally while being bent in the horizontal direction with relative sliding movement between the coil spring 18a and the coil 18a.

  Therefore, when the rack swings in the front-rear depth direction (X direction) of the load storage section 1 due to an earthquake or the like, the support member 9 integrated with the rack is biased to the load receiving members 3 supporting the load. The coil spring 26 swings in the same direction against the elasticity of the coil spring 26, and relative movement occurs between the load receiving member 3 supporting the load and the support member 9, and the load on the load receiving member 3 hardly swings. Or it will sway with small amplitude later than the support member 9, and if the speed and amplitude of the sway are within the assumed range, the desired seismic isolation effect can be obtained. Of course, the coil springs 26 of the urging units 13A and 13B always attempt to automatically return to the vertical posture by the elastic return force. Therefore, when the rack sway stops, the load receiving member 3 is It automatically returns to the fixed position. At this time, the elastic return force of the coil spring 26 causes the load receiving member 3 on which the load is mounted to return to the origin against the frictional force between the support column 17 and the supported surface portion 18a of the support units 11A and 11B. Therefore, the frictional force between the support column 17 and the supported surface portion 18a of the support units 11A and 11B must be configured to be as small as possible. For this reason, without forming the front end surface 17a of the supporting column 17 into a protruding spherical surface as described above, or making the bottom surface of the top plate portion 8a of the load receiving member 3 (gate shape member 8) also serve as a contacted surface portion, It is desirable to provide the abutting surface portion 18a by attaching a separate sliding plate 18 made of a material having a low frictional resistance.

  In the above-described embodiment, the recess 20 of the slide limiting member 19 of the support units 11A and 11B is arranged so that the support column 17 is in the length direction of the load receiving member 3, that is, the front and rear depth direction (X direction) of the load storage section 1. However, the vertical coil spring 26 of the urging units 13A and 13B can be bent in any direction by 360 degrees in the horizontal direction, so that it is supported as in the above embodiment. It is desirable to configure the units 11A and 11B so that the load receiving member 3 and the support member 9 can be moved relative to each other in 360 degrees in the horizontal direction as long as they are within the range limited by the slide limiting member 19. .

  In the above embodiment, the pair of front and rear support columns 4a and 4b of the partition wall frame 2 supporting the support member 9 via the arm member 7 has an open cross section as shown in FIG. 2C. Since the side wall plate 4c having a square cross section projecting sideways of the column members 4a and 4b to which the arm member 7 is attached can be elastically deformed in the horizontal direction inside and outside, the square cross section of the column members 4a and 4b is rectangular. If the side plate 4c is in a direction accompanied by elastic deformation in the inner and outer horizontal directions, the horizontal relative movement between the support member 9 and the partition frame 2 is allowed to some extent. Therefore, depending on the shaking direction of the rack (partition wall frame 2) due to an earthquake or the like, in addition to the horizontal relative movement between the support member 9 and the load receiving member 3, the horizontal direction between the support member 9 and the partition frame 2 The relative movement also increases the seismic isolation effect for the load supported by the load receiving member 3.

  The number and position of the support units constituting the support means 12, the number and positions of the urging units constituting the urging means 14, and the structure of the support units are not limited to those of the above embodiment.

  In the embodiment shown in FIG. 8, three urging units 13 </ b> A to 13 </ b> C are disposed as the urging unit 14 at both ends in the longitudinal direction and the center position of the load receiving member 3, and constitute two support units. Units 30A and 30B are disposed adjacent to the inside of the urging units 13A and 13B at both ends. The support units 30A and 30B in this embodiment omit the slide limiting member 19 from the support units 11A and 11B in the previous embodiment, and increase the diameter of the support column 17 as shown in FIG. 3 (gate-shaped member 8) is configured to limit the slidable region in the horizontal direction by the contact between the support column 17 and the left and right side plates 8b, 8c of the load receiving member 3 (gate-shaped member 8). ing. Further, the urging units 13A and 13B are basically the same as those of the previous embodiment, but the pushing force of the coil spring 26 is increased to load the load as shown in the left half of FIG. 8A. When the load receiving member 3 is not lifted up to a level at which a gap is formed between the tip end surface 17a of the support column 17 and the supported surface portion 18a in the support units 30A and 30B and the load is mounted, As shown in the right half, the load receiving member 3 is slightly lowered, the front end surface 17a of the support column 17 and the supported surface portion 18a abut each other, and the load receiving member 3 is supported at a predetermined level. .

  9 to 11 show a support unit 31 according to still another embodiment. This support unit 31 can be used in place of the support units 11A, 11B, 30A, 30B in the previous embodiment, and on the upper end of the support column 17 attached on the top plate portion 9a of the support member 9, A bearing holder 32 is fitted, and a plurality of spheres (steel balls) 33 having the same diameter are loosely fitted in a recess receiving portion 32a formed on the upper surface of the holder 32, each of which freely swingably rotates, and a rolling support portion. 34 is configured. According to this configuration, the sphere 33 of the rolling support portion 34 supports the load receiving member 3 by being in contact with the sliding plate 18 (supported surface portion 18a) on the load receiving member 3 side so as to be freely rollable. Accordingly, since the sliding resistance between the supporting column 17 and the supported surface portion 18a becomes very small, an ordinary steel plate can be used as the sliding plate 18 as long as it has an appropriate strength. The bottom surface of the top plate portion 8a of the member 3 (the gate-shaped member 8) can be used as the supported surface portion as it is.

  Furthermore, in the support unit 31 described above, the bearing holder 32 having a diameter larger than that of the support column 17 is fitted to the upper end of the support column 17, so that the bearing holder 32 is shown in FIG. Since the space between the left and right side plate portions 8b and 8c of the load receiving member 3 (gate shape member 8) is narrowed, the bearing holder 32 and the load receiving member 3 are not used without using the slide limiting member 19 shown in the previous embodiment. The slidable region in the horizontal direction of the load receiving member 3 is limited by abutting the left and right side plate portions 8b and 8c of the (gate shape member 8). Therefore, in order to limit the slidable region in the front-rear horizontal direction of the load receiving member 3, stopper members 35a, 35b are attached to the load receiving member 3 side on both the front and rear sides of the support column 17. The two stopper members 35a and 35b are also provided on the top plate portion 8a of the two receiving screws 36 and the load receiving member 3 (the gate-shaped member 8), respectively, penetrating the stopper members 35a and 34b and the sliding plate 18 upward. It is attached to the load receiving member 3 integrally with the sliding plate 18 by the formed screw hole. Naturally, the mounting screw 36 does not protrude upward from the upper surface (load supporting surface) of the load receiving member 3.

  In the support unit 31 including the rolling support portion 34, the bearing holder 32 can be omitted by directly forming a concave receiving portion 32a that loosely holds the spherical body 33 on the upper end surface of the support column 17. . In the support units of all the embodiments described above, the support column 17 can be projected downward from the load receiving member 3 side, and the supported surface portion 18a can be provided on the support member 9 side. Further, the pair of left and right load receiving members 3 are located at locations that do not affect loading / unloading by the load transfer fork of the crane for loading and unloading, for example, the rear end portion of the load receiving member 3 and the space for moving the load transfer fork. On the lower side, the load receiving members 3 can be connected to each other by a connecting member.

Fig. A is a cross-sectional plan view of the main part for explaining the basic configuration of the load storage rack, and Fig. B is a front view of the main part. Fig. A is a plan view showing the load supporting device, Fig. B is a front view thereof, and Fig. C is an enlarged view of a portion C of Fig. A. It is a partially cutaway side view showing one side of the load supporting device. It is a partially vertical side view which shows one support unit. It is the longitudinal section front view. It is the sectional view on the AA line of FIG. It is a partially vertical side view showing one urging unit. Fig. A is a partially cutaway side view showing one side of the load supporting device in the second embodiment, and Fig. B is a longitudinal front view of the same. It is a partially vertical side view which shows one support unit in 3rd embodiment. It is the longitudinal section front view. FIG. 10 is a sectional view taken along line B-B in FIG. 9.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Load storage section 2 Bulkhead frame 3 Load receiving member 4a, 4b Support | pillar material 5,6 Connection member 7 Arm material 8 Gate-shaped material 8a Top plate part 9 of a gate-shaped material 9 Support member 9a Top plate part 10 of a support member Attachment member 11A, 11B, 30A, 30B, 31 Support unit 12 Support means 13A, 13B Energizing unit 14 Energizing means 17 Supporting column 18 Slide plate 18a Supported surface portion 19 Slide limiting member 20 Recessed portion 20a Recessed inner side surface 23 Lower spring receiving member 25 Upper spring receiving member 26 Coil spring 32 Bearing holder 32a Recessed receiving portion 33 Sphere (steel ball)
34 Rolling support portions 35a, 35b Stopper member

Claims (7)

  A load supporting device for a load storage rack in which a pair of left and right load receiving members extending in the front-rear depth direction of the load storage compartment are horizontally installed inside the left and right partition walls of the load storage compartment, On the side, a support member connected from the left and right partition walls is disposed, and between the support member and the load receiving member, the load receiving member is slid at least within a certain range in the front-rear depth direction of the load storage section. And a biasing means for biasing and holding the load receiving member at a fixed position within the slidable region. The biasing means is a bottom projecting upward from the support member. Load storage comprising at least one urging unit comprising a side spring receiving member, an upper spring receiving member protruding downward from the load receiving member, and a coil spring having both upper and lower spring receiving members fitted to both upper and lower ends for Click of the load support apparatus.   2. The load storage rack according to claim 1, wherein the support means slidably supports the load receiving member within a certain range on a two-dimensional plane including a horizontal direction perpendicular to the length direction of the load receiving member. Load support device.   The load storage according to claim 1 or 2, wherein the load receiving member is made of a gate material having a lower opening, and the supporting means and the biasing means are housed in a lower open groove-shaped space of the load receiving member. Rack load support device.   The support means includes at least two support units arranged in the length direction of the load receiving member, and each support unit is vertically oriented and fixedly projected on one of the support member and the load receiving member. 4. The support column body according to claim 1, and a supported surface portion that is provided on the other member and a tip of the support column body abuts so as to be relatively slidable. 5. Load support device for load storage rack.   The support unit includes a slide limiting member having a concave portion in which the supporting column body is loosely fitted on a member side on which the supported surface portion is provided, and an inner surface of the concave portion of the slide limiting member, the supporting column body, The load supporting device for a load storage rack according to claim 4, wherein sliding of the load receiving member is restricted by contact of the load receiving rack.   6. The load storage according to claim 4, wherein a plurality of spheres that are in contact with the supported surface portion so as to be able to roll freely are held at the front ends of the support columns of the support unit so as to be freely rotatable. Rack load support device. The left and right bulkhead frames of the load storage compartment are provided with a pair of front and rear support members, each support member having a cross-sectional shape with the inner sides facing each other open, and the support member is a side wall plate of both front and rear support members. The load support device for a load storage rack according to any one of claims 1 to 6, wherein the load support device is attached to a pair of front and rear arm members that are attached to the portion and extend toward the load storage section.

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