JP5673956B2 - Shelf with movable bed - Google Patents

Description

  The present invention relates to a shelf with a movable platform generally referred to as a fluidized shelf, which includes a movable platform that moves on an inclined rail in the shelf depth direction.

  As described in Patent Document 1, a shelf with a movable platform generally referred to as a fluidized shelf is used for supporting a platform that is inclined at the bottom of a load storage space that is long in the depth direction of the shelf so that the back side of the shelf becomes higher. A rail is erected, and a fixed bed is provided at a position adjacent to the entrance of the load storage space, and a movable bed supported movably on the bed support rail is supported on the fixed bed. It is configured to be able to slide by gravity from a retreat position adjacent to the rear side of the load to a forward limit position that overlaps the fixed load platform, and the shelf described in Patent Document 1 has a storage capacity of the entire shelf. In order to increase the number, the movable loading platform is the lowest movable loading platform, and one or more upper movable loading platforms that overlap the lowermost movable loading platform on the fixed loading platform are added. Thus, in this type of shelf, for example, in order to facilitate the assembly of the movable carrier at the shelf installation site, the wheels of each movable carrier are not fitted into the inclined rails of the groove-shaped cross section, but the inclined rails. When the structure to be supported by the flat top surface is used, when the load to be handled is a product in which the object to be transported is loaded on a transport pallet having a non-slip rubber stuck to the bottom surface, Due to the fact that the non-slip rubber sticks to the upper surface of the movable bed with the weight of the load, when the load (pallet) is lifted from the movable bed by a forklift, the movable bed will be with the load. There is a risk of lifting from the sloping rail. This lifting of the movable platform causes not only a large noise when the movable platform that is far from the load falls on the inclined rail, but also the wheels of the movable platform may come off from the proper position on the inclined rail. It was a big problem for safety.

JP 2004-269105 A

  The configuration described in Patent Document 1 is not the lowermost movable loading platform, but the upper movable loading platform, which is caused by the front wheels of the upper movable loading platform moving away from the front end of the movable loading platform. This is a structure for preventing the upper movable load platform from being lowered from the upper movable load platform, and when the load is lifted from the upper movable load platform, it is possible to prevent the upper movable load platform from being lifted due to the above-mentioned reason. In this movable load platform, since the front wheels can be disposed at the front end of the movable load platform, no measures are taken to prevent the movable load platform in the lowermost stage from jumping up. Of course, a shelf composed of a fixed loading platform and one movable loading platform provided adjacent to the entrance of the loading storage space, that is, a small shelf capable of storing two loads in the depth direction of the loading storage space. In such a case, there is no possibility of taking the means for preventing the movable platform from jumping up as described in Patent Document 1. Therefore, in any case, no means for preventing the floating of the movable carrier caused by the above reason has been taken in the movable carrier that is directly above the fixed carrier.

The present invention proposes a shelf with a movable carrier that can solve the conventional problems as described above, and the shelf with a movable carrier according to the present invention according to claim 1 is an embodiment described later. In order to facilitate understanding of the relationship, the reference numerals used in the description of the embodiment are shown in parentheses, and the back side of the shelf is at the bottom of the load storage space (1A) that is long in the depth direction of the shelf. Loading platform support rails (5a, 5b) that are inclined so as to be higher are installed, and a fixed loading platform portion (2) is provided at a position adjacent to the entrance of the cargo storage space (1A), and the loading platform support rail ( 5a, a configured rack so can slide by gravity to the advance limit position overlying the movably supported movable bed (3) is the fixed bed portion (2) on 5b), the loading platform support When the movable platform (3) slid on the rail (5a, 5b) reaches the forward limit position, the movable platform Engagement with the engaged parts (26a, 26b) provided in (3) in the movable carrier movement direction to suppress the floating of the movable carrier (3) from the carrier support rails (5a, 5b) In the shelf with a movable platform where the portions (27a, 27b) are provided on the shelf side, the engaged portion (32, 37, 40) is provided at the end of the movable platform (3) on the back side of the shelf. The engaging portions (33, 43) are configured to be provided at the end portion on the back side of the shelf of the fixed bed portion (2) .

When the present invention is carried out, specifically, as described in claim 2 , the engaged parts (26a, 26b, 32, 37, 40) are projected downward from the movable carrier (3). And a member (28, 35, 38, 41) provided with a through-hole (29, 36, 42a, 42b) penetrating in the moving bed movement direction, and the engaging portion (27a, 27b, 33, 43) Is composed of cantilevered bar-shaped members (30, 12a, 45a, 45b) that are parallel to the moving bed movement direction and supported only on the shelf side at the entrance side of the load storage space (1A). (30, 12a, 45a, 45b) can be configured to be inserted into the through holes (29, 36, 42a, 42b) of the engaged portions (26a, 26b, 32, 37, 40). Furthermore, as described in claim 3 , when the movable platform (3) reaches the forward limit position, the movable platform (3) is one of the restraining surface on the shelf side and the contact surface on the movable platform side that are in contact with each other. The abutting surface on the side is composed of a buffer member (31), and a buffer member mounting plate for mounting the buffer member (31) to the movable platform (3) is extended to the side, and the cover is attached to the extended portion. An engagement part (26a, 26b) can be provided.

Further, as described in claim 4 , a pair of the engaged portions (26a, 26b) and the engaging portions (27a, 27b) can be provided symmetrically with respect to the movable carrier (3). In some cases, it may be provided only at one central position in the lateral width direction with respect to the movable platform (3).

When adopting the configuration according to any one of claims 1 to 4 , as described in claim 5 , for supporting a load parallel to the moving platform moving direction of the fixed platform (2). The end of the bar-like member (12) on the back side of the shelf is projected to the back side of the shelf from the left and right beam members (10a) that support the load-supporting bar-like member (12), and this load-supporting bar-like member ( The engaging portion (33) can be constituted by the protruding end portion (12a) of 12). In this case, as described in claim 6 , the engaged portion (37) is supported by the end portion on the back side of the shelf of the movable loading platform (3) so as to be swingable up and down. A vertically long rectangular frame member 38) can be used.

  According to the configuration of the present invention described in claim 1, when unloading the load from the movable loading platform, the load on the fixed loading platform adjacent to the entrance of the load storage space is unloaded, and the movable loading platform is moved by gravity. In this situation, the engaged part on the movable carrier side and the engaging part on the shelf side are always engaged with each other in the movable carrier movement direction. The lift of the movable carrier that exceeds the play allowance between the engaged portion and the engaging portion is reliably prevented by the engagement between the engaged portion and the engaging portion. Therefore, for example, even when the anti-slip rubber on the bottom surface of the pallet sticks to and adheres to the surface of the movable load platform as described above, the movable load platform lifts with the load when the load is lifted with a forklift. Since it is not necessary to cause such a phenomenon, it is possible to avoid a dangerous situation such as generation of a large abnormal noise or a wheel of the movable carrier being detached from the inclined rail.

In the situation where the movable platform has reached the forward limit position where it overlaps the fixed platform, the beam member in the horizontal direction that supports the end of the inclined rail on the shelf side that is always present at the end of the entrance side of the load storage space. And the front end of the movable platform are adjacent to each other. Therefore, according to the configuration of the present invention , when the load is lifted from the movable platform by the forklift, the rear end of the load (the end on the back side of the shelf) is the front end. Even when the load is tilted and lifted so that it can be lifted ahead of it, the rear end of the movable platform (the end on the back of the shelf) is effectively prevented from being lifted together with the load. I can do it.

The configurations of the engaged part on the movable carrier side and the engaging part on the shelf side are not particularly limited. For example, a plate-like member that extends horizontally forward is provided as the engaged portion on the movable carrier side, and the engagement member on the shelf side has a plate-like shape when the movable carrier reaches the forward limit position. Although a plate-like member extending horizontally rearward can be provided so as to cover the member, according to the configuration of claim 2 , the positioning effect of positioning the movable carrier in the forward limit position with respect to the left and right lateral directions Can also be obtained at the same time.

Moreover, according to the structure of Claim 3 , only by enlarging the buffer member mounting plate required for mounting the buffer member that softens the impact when the movable platform is stopped at the forward limit position to the movable platform, The member that provides the required engaged portion on the movable carrier side can be shared by the buffer member mounting plate, and the cost is reduced compared to the case where a dedicated member that provides the engaged portion must be prepared separately. Can be planned.

The engaged portion and the engaging portion can be provided corresponding to any one of the movable loading platforms, but according to the configuration of claim 4 , a pair is provided symmetrically with respect to the movable loading platform. The movable part can be lifted effectively by the engaged part and the engaging part, and when it is carried out in combination with the configuration according to claim 3 , the stop of the movable stage at the forward limit position is also possible. The movable platform can be stably stopped without causing horizontal tilting.

In addition, when providing the said to-be-engaged part in the rear-end part of a movable bed, according to the structure of Claim 5 , the rod-shaped member for load support parallel to the movable bed movement direction which comprises the said fixed bed part Although the shelf-side engagement part can be configured using the end of the shelf on the rear side of the rack, and a sturdy engagement part can be configured, the engagement part made of another member is attached to the shelf side Can also be expected to reduce costs. In this case, according to the structure of Claim 6 , the position of the edge part of the shelf back side of the said load-supporting rod-shaped member will be largely separated rearward from the rear end part of the movable cargo bed at the forward limit position. Even in such a situation, there is no need to project the engaged portion attached to the rear end portion side of the movable cargo platform long from the rear end portion of the movable cargo platform, and the configuration of the engaged portion is easy. become.

FIG. 1 is a longitudinal side view of the entire shelf in which a lower movable load platform and an upper movable load platform are provided in each of the upper and lower two-stage load storage spaces. FIG. 2 is a longitudinal side view of the entire shelf showing the situation when the load is unloaded from the lower movable loading platform of the upper load storage space. FIG. 3 is an enlarged view of a portion of FIG. FIG. 4 is a plan view showing the entrance side end of the load storage space and the lower stage movable load platform. FIG. 5 is an enlarged vertical side view of FIG. FIG. 6 is a plan view showing a shelf rear side end of the load storage space and an upper movable bed. FIG. 7 is a longitudinal side view showing the upper movable carrier. FIG. 8 is a partially longitudinal front view when the upper and lower movable load platforms are at the forward limit position where they overlap the fixed load platform. FIG. 9 is a partially cutaway front view showing the lower movable carrier and the inclined rail that supports the lower movable carrier. FIG. 10 is a partially cutaway front view showing the upper stage movable loading platform and the inclined rail that supports it. FIG. 11A is a longitudinal side view of a main part showing a state in which the lower movable carrier of the first embodiment is in the forward limit position, and FIG. 11B is a state in which the lower movable carrier of the first embodiment is in front of the forward limit position. It is a vertical side view of the principal part which shows. 12A is a partial cross-sectional plan view of FIG. 11A, and FIG. 12B is a partial cross-sectional plan view of FIG. 11B. FIG. 13: is a top view of the principal part which shows the state which has the lower stage movable carrier in the 2nd Example in a forward limit position. 14 is an enlarged partially vertical side view of the main part of FIG. FIG. 15 is a partially longitudinal side view of the main part of the third embodiment. 16 is a plan view of FIG. FIG. 17 is a partially longitudinal side view of the main part of the fourth embodiment. 18 is a partial cross-sectional plan view of FIG. FIG. 19 is a front view of FIG.

  Referring to FIGS. 1 to 10, the entire structure of a shelf with a movable carrier according to an embodiment of the present invention will be described. The shelf with a movable carrier is vertically long and double in the shelf depth direction (hereinafter referred to as the front-rear direction). Load storage spaces 1A and 1B. The load storage spaces 1A and 1B at the upper and lower stages have such a length that three cubes C1 to C3 having substantially the same size can be arranged in series in the front-rear direction, and are the entrances of the load storage spaces 1A and 1B. A fixed load platform 2 that supports the first load C1 adjacent to the side end (hereinafter referred to as the front end), a lower movable load platform 3 that is used to support the intermediate second load C2, and the back of the shelf An upper movable platform 4 used to support the third load C3 on the side is provided.

  In the cargo storage spaces 1A and 1B, a pair of left and right cargo bed support rails 5a and 5b are disposed at the bottom thereof in parallel with the front-rear direction. Each of the load carrier support rails 5a and 5b is made higher by the front support frame structure 6A and the rear support frame structure 6B from the front end side to the rear end side of the load storage spaces 1A and 1B. So as to be inclined. The supporting frame structures 6A and 6B are composed of a pair of front left and right columns 7a and 7b, a pair of rear left and right columns 8a and 8b, and a pair of front left and right columns 7a and 7b. Horizontal beam members 9a and 9b, a pair of rear left and right columns 8a and 8b connected to each other in two upper and lower positions, horizontal rear horizontal beam members 10a and 10b on the rear side, and a pair of front and rear columns 7a on the same left and right side 8a and a pair of front and rear support columns 7b, 8b are constituted by brace members 11a, 11b (see FIGS. 4 and 6) for connecting and integrating each other. The load carrier support rails 5a and 5b of the upper and lower load storage spaces 1A and 1B are coupled in abutting manner with the front ends of the front and left horizontal beam members 9a and 9b on the front side of the front support frame structure 6A. In addition, the middle two places in the length direction and the rear end are the horizontal beam members 10a, 10b on the left and right sides on the rear side of the front support frame structure 6A and the upper and lower sides on the front side of the support frame structure 6B on the rear side. The left and right horizontal beam members 9a and 9b in two steps and the left and right horizontal beam members 10a and 10b in the upper and lower two stages on the rear side are mounted and fixed. Therefore, the front support frame structure 6A and the rear support frame structure 6B are connected and integrated with each other by a pair of upper and lower left and right loading platform support rails 5a and 5b.

  As shown in FIGS. 4 and 8, the fixed loading platform 2 of each stage storage space 1A, 1B includes a front end (inclined lower end) region of a pair of left and right loading platform support rails 5a, 5b and a front support. Between the left and right horizontal beam members 9a and 9b on the front side and the left and right horizontal beam members 10a and 10b on the rear side of the frame structure 6A, the center position between the pair of left and right load carrier support rails 5a and 5b is It is comprised by the rod-shaped member 12 for intermediate | middle load support constructed along. The front end of the intermediate load supporting bar-like member 12 is coupled to the inner side surfaces of the front left and right horizontal beam members 9a and 9b in a butt-like manner, similarly to the front ends of the carrier supporting rails 5a and 5b. The rear end portions of the members 12 are placed and fixed on the left and right horizontal beam members 10a and 10b on the rear side, like the loading platform supporting rails 5a and 5b. Square steel pipes having the same cross-sectional size are used for the pair of left and right load carrier support rails 5a and 5b and the intermediate load support rod-like member 12. Therefore, the pair of left and right load carrier support rails 5a and 5b and the intermediate load support bar-like member 12 have the same upper surface as the load support surface.

  As shown in FIGS. 4, 5, 8, and 9, the lower movable platform 3 of each of the cargo storage spaces 1 </ b> A and 1 </ b> B includes a pair of left and right front / rear direction angle members 13 a and 13 b at both front and rear ends. In FIG. 4, the frame body 15 is connected and integrated by left and right direction connecting members 14a to 14c, two pairs of left and right support wheels 16 and two pairs of left and right back and forth anti-spinning rollers 17. The angle members 13a and 13b in the front-rear direction are configured such that the horizontal plate portion extends to the left and right sides flush with the upper surface of the rectangular frame-shaped main body 15 and covers right above the pair of left and right support rails 5a and 5b. ing. Thus, each support wheel 16 is pivotally supported by a horizontal support shaft on the outer side of the vertical plate portion of both the front and rear direction angle members 13a and 13b, and the inner half of the upper surface of the pair of left and right load carrier support rails 5a and 5b. The anti-rest rollers 17 are vertically mounted on the inner sides of the vertical plate portions of the front and rear direction angle members 13a and 13b via bearing plates 18 fixed to the vertical plate portions. It is supported by a support shaft and is configured to be able to roll adjacent to the inner vertical surface of the pair of left and right load carrier support rails 5a and 5b.

  As shown in FIGS. 6 to 8 and 10, the upper movable platform 4 for each of the cargo storage spaces 1 </ b> A and 1 </ b> B includes a pair of left and right front and rear direction members 19 a and 19 b, a front end, a position near the rear end, and an intermediate one. It is composed of a rectangular frame main body 21 connected and integrated by left and right direction connecting members 20a to 20c at a place, two pairs of left and right front and rear support wheels 22, and two pairs of left and right front and rear backrest rollers 23. The direction members 19a and 19b are configured to cover the pair of left and right loading platform support rails 5a and 5b. Thus, of each of the support wheels 22, the pair of front left and right support wheels 22 are located inside the lower ends of the pair of left and right columnar members 24 that hang down with the upper ends fixed to the outside of the front and rear direction members 19a and 19b. A pair of left and right support rails 5a and 5b, which are pivotally supported by a horizontal support shaft, are slidably mounted on the outer half of the upper surface of each of the left and right support rails 5a and 5b. The wheels 22 are horizontally supported on the outer sides of the lower ends of a pair of left and right columnar members 25 that hang down with their upper ends fixed to inner corners between the front and rear direction members 19a and 19b and the left and right direction connecting members 20b. It is pivotally supported by a shaft and is slidably mounted on the inner half area of the upper surface of the pair of left and right loading platform support rails 5a and 5b. Each steadying roller 23 pivotally supports a support wheel 22. A vertical support shaft is attached to the lower end of each columnar member 23, 24 Are a pair of left and right cargo bed support rails 5a, is configured to be rolled adjacent to the outer vertical surface and an inner vertical surface 5b. Thus, the upper movable load platform 4 is configured such that each support wheel 22 is pivotally supported via the columnar members 24 and 25, so that the rectangular frame-shaped main body 21 is more than the rectangular frame-shaped main body 15 of the lower movable load platform 3. The rectangular frame-shaped main body 21 of the upper movable load platform 4 is supported at a high level so that it can run on the upper side of the rectangular frame-shaped main body 15 of the lower movable load platform 3.

  In the shelf with the movable carrier configured as described above, the lower movable carrier 3 is provided with the engaged portions 26a and 26b at two left and right symmetrical positions on the front end, and the lower movable carrier 3 is fixed to the fixed carrier 2. Engagement portions 27a and 27b that engage with the engaged portions 26a and 26b when reaching the forward limit position that overlaps the upper side are provided on the shelf side. As shown in FIGS. 11 and 12, the left and right direction connecting member 20a at the front end of the rectangular frame main body 15 of the lower movable platform 3 has an upper end fixed to the rear side surface thereof and a pair of left and right platform support rails 5a and 5b. A pair of left and right channel members 28 that hang down are provided, and a buffer member mounting plate 31a with a buffer member 31 attached to the front surface is provided on the front surface of the lower ends of both channel members 28. It is fixed in a state of covering. Thus, the pair of left and right engaged portions 26a and 26b are configured by providing a through hole 29 penetrating in the front-rear direction in an extending portion that laterally extends the buffer member mounting plate 31a. Yes.

  The buffer member 31 is made of a rubber cylindrical body, and a bolt shaft portion 31b protruding rearward from the inside thereof is passed through the buffer member mounting plate 31a in the rearward direction, and the inner side of the groove-shaped member 28 The nut 31c is screwed and fastened to the bolt shaft portion 31b. A through window 28 a for operating the nut 31 c from the rear outside of the groove member 28 is provided on the rear side wall portion of the groove member 28.

  The engaging portions 27a and 27b are constituted by a cantilevered rod-like member 30 protruding rearward from the left and right horizontal horizontal beam members 9a and 9b on the front side in the front support frame structure 6A. The rod-shaped member 30 is composed of a long bolt that penetrates the vertical plate portion 9c of the horizontal beam members 9a, 9b in the left and right directions backward. The head 30a of the long bolt and the horizontal beam members 9a, 9b in the horizontal direction The vertical plate portion 9c of the horizontal beam members 9a, 9b is attached between the nut 30b and the nut 30b screwed to the screw shaft portion of the long bolt. Thus, when the lower movable platform 3 reaches the forward limit position where it overlaps the fixed platform 2, the rod-shaped members 30 of the engaging portions 27 a and 27 b penetrate the through holes 29 of the engaged portions 26 a and 26 b. In this state, the buffer member 31 located inside the engaged portions 26a and 26b is in contact with the vertical plate portion 9c of the horizontal beam members 9a and 9b, and the forward limit position of the lower movable load platform 3 is determined. Has been. In other words, the shelf-side restraining surfaces that come into contact with each other when the lower movable platform 3 reaches the forward limit position are configured by the vertical plate portions 9c of the horizontal beam members 9a and 9b, and come into contact with the lower movable platform 3 side. The surface is constituted by the front end surface of the buffer member 31 attached to the lower movable carrier 3.

  Of course, basically, when the buffer member 31 is attached to the vertical plate portion 9c of the horizontal beam members 9a and 9b and the lower movable carriage 3 reaches the forward limit position, the through holes 29 of the engaged portions 26a and 26b are formed. You may comprise so that the said buffer member 31 may contact | abut to the said buffer member attachment board 31a used as the exclusive board for forming. Further, the buffer member 31 is attached to the base of the rod-shaped member 30, and when the lower movable carriage 3 reaches the forward limit position, it becomes a dedicated plate for forming the through holes 29 of the engaged portions 26a, 26b. The buffer member 31 may be configured to abut on the buffer member mounting plate 31 a around the through hole 29.

  The use method of the shelf with a movable bed constructed as described above will be described. When no load is stored in each of the load storage spaces 1A and 1B, the lower load storage space 1B and FIG. As shown in FIG. 8, the lower stage movable load platform 3 and the upper stage movable load platform 4 slide on the load platform support rails 5a, 5b inclined downward (forward) by gravity. As described above, the pair of left and right shock absorbing members 31 on the lower movable carrier 3 side is positioned at the forward limit position by contacting the vertical plate portion 9c of the horizontal beam members 9a and 9b on the shelf side. At this time, the rod-shaped member 30 in the pair of left and right engaging portions 27a and 27b on the shelf side penetrates through the through holes 29 of the engaged portions 26a and 26b on the lower movable cargo bed 3 side in the front-rear direction.

  On the other hand, when the upper movable platform 4 reaches the forward limit position that overlaps the lower movable platform 3 at the forward limit position as shown in the drawing, the pair of left and right support wheels 22 on the front side of the lower movable platform 3 A pair of left and right columnar members 25 that are positioned so as to overlap the outer sides of the pair of left and right support wheels 16 and pivotally support the pair of left and right support wheels 22 on the rear side are in contact with the rear side of the lower movable carriage 3. In contact therewith, the pair of left and right support wheels 22 on the rear side also stops the pair of left and right support wheels 22 on the rear side of the lower movable carriage 3 just behind. The pair of left and right support wheels 22 on the front side of the upper movable platform 4 rolls on the outer half of the upper surface of the pair of left and right platform support rails 5a and 5b. There is no possibility of interfering with two pairs of left and right support wheels 16 that roll in the inner half region of the upper surface.

  As described above, when the lower movable load platform 3 and the upper movable load platform 4 are in the forward limit position where they overlap the fixed load platform 2 at the front ends of the load storage spaces 1A and 1B, the lower loads in FIGS. As shown by the storage space 1 </ b> B, the load C <b> 3 can be mounted on the upper movable load platform 4. Next, the load C2 is loaded on the lower movable load platform 3. In this case, the load C3 or the upper movable load platform 4 previously loaded on the upper movable load platform 4 is loaded by the load C2 supported by the forklift. The upper movable load carrier 4 loaded with the load C3 is moved to the rear of the load storage spaces 1A and 1B against the gravity while the load C2 is waited at the forward limit position. It is carried in to the position directly above the lower movable loading platform 3 that is being moved. Thereafter, the load C2 is lowered by a forklift and loaded on the lower movable loading platform 3. Finally, when loading the load C1 on the fixed loading platform 2, the lower movable loading platform 3 loading the load C2 and the upper movable loading platform 4 loading the load C3 are loaded by the load C1 in the above-described manner. By operating the storage spaces 1A and 1B to be pushed rearward, the load C1 can be lowered and loaded on the fixed load platform 2 when the fixed load platform 2 is opened.

  When unloading the loads C1 to C3 stored in the load storage spaces 1A and 1B, the load C1 loaded on the fixed platform 2 is first lifted and pulled out by a forklift. As the load C1 is withdrawn from the storage spaces 1A and 1B, the lower movable loading platform 3 on which the load C2 is loaded and the upper movable loading platform 4 on which the load C3 is loaded are received by the load C1. When the load C1 is naturally slid downward on the load carrier support rails 5a and 5b due to gravity and the load C1 is carried out, the lower stage on which the load C2 is loaded as shown in the upper load storage space 1A in FIG. The movable stage 3 reaches the forward limit position where it overlaps the empty fixed stage 2 and stops, and the upper stage on which the subsequent stage C3 is loaded by the lower stage movable stage 3 on which the load C2 is loaded. Movable bed 4 is received It will be state.

  The operation for unloading the load C2 on the lower movable platform 3 in the forward limit position is the same as the operation for unloading the load C1 on the fixed platform 2, but the load C2 at this time is described above. In this way, the object to be conveyed is loaded on the conveyance pallet, and the non-slip rubber on the bottom surface of the conveyance pallet is closely attached to the upper surface of the lower movable loading platform 3 by the weight of the load. 11A and 12A, the lower movable load carrier 3 has a shelf side engagement portion 27a in the through hole 29 of the engaged portions 26a and 26b on the lower movable load carrier 3 side. 27b penetrates in the front-rear direction, so that when the load C2 is lifted by a forklift, the lower movable load bed 3 on which the load C2 is loaded has an allowable height above the load bed support rails 5a, 5b. There is no fear of floating over. By unloading the load C2 on the lower movable platform 3, the subsequent upper movable platform 4 slides on the platform support rails 5a, 5b together with the load C3 to the forward limit position, and emptied. It will be in the state where it overlaps on the lower stage movable carrier 3 stopped in the forward limit position. Accordingly, the load C3 on the upper movable platform 4 can be carried out by the forklift.

  Even if the transfer pallet forming the load C3 is stuck to the upper surface of the upper movable load platform 4 for the above reason, the upper movable load platform 4 at the forward limit position is The pair of front left and right support wheels 22 enter the lower side of the horizontal plate portions of the front and rear angle members 13a and 13b forming the left and right sides of the lower movable platform 3 directly below, so that the upper movable platform 4 is Lifting over the support platform rails 5a, 5b exceeding the allowable height is prevented by the front and rear pair of support wheels 22 from being lifted by the front and rear direction angle members 13a, 13b of the lower movable platform 3, As described above, the lower movable carriage 3 is prevented from floating above the carriage support rails 5a and 5b by the engagement between the engaged parts 26a and 26b and the engaging parts 27a and 27b. By the fact that, is reliably prevented.

  In the second embodiment shown in FIG. 13 and FIG. 14, an engaged portion 32 is provided at one central position in the left-right width direction of the rear end portion of the lower movable carrier 3, and the lower movable carrier 3 is connected to the fixed carrier 2. When in the overlapping forward limit position, one engaging portion 33 that engages with the engaged portion 32 is provided on the shelf side. More specifically, the positions of the rear end portions of the intermediate load supporting bar-shaped member 12 constituting the fixed load platform 2, that is, the positions of the left and right horizontal beam members 10a and 10b on the rear side of the front supporting frame structure 6A are as follows. The intermediate load supporting rod-like member 12 is made slightly longer by slightly increasing the total length of the intermediate load supporting bar 12 because the lower movable load bed 3 located at the forward limit position overlapping the fixed load bed portion 2 is at a position farther rearward than the rear end. The rear end portion of the bar member 12 is slightly protruded rearward from the left and right horizontal beam members 10a and 10b, and the protruding end portion 12a of the intermediate load supporting rod member 12 is used as the engaging portion 33. In addition, the engaged portion 32 is provided with an appropriate mounting tool such as a mounting plate 34 and a bolt nut that covers the left and right direction connecting member 14b on the lower side of the center of the left and right direction connecting member 14b at the rear end of the lower movable loading platform 3. Utilizing this, a belt-like plate 35 extending rearward is attached, the rear end portion of the belt-like plate 35 is bent downward at a right angle to form a vertical plate portion 35a, and a lower stage movable loading platform is formed on the vertical plate portion 35a. A through hole 36 through which the engaging portion 33, that is, the projecting end portion 12a of the intermediate load supporting rod-like member 12 penetrates backward, is formed when 3 reaches the forward limit position.

  Also in the engaged portion 32 and the engaging portion 33 of the second embodiment, as in the previous embodiment, when the lower movable carrier 3 reaches the forward limit position, it is the engaging portion 33 on the shelf side. The protruding end portion 12a of the intermediate load supporting rod-shaped member 12 penetrates backward through the through hole 36 of the belt-like plate 35 which is the engaged portion 32 on the lower movable load platform 3 side, and the lower movable load platform 3 supports the load platform. It is possible to prevent the rails 5a and 5b from floating above the allowable limit. Of course, when a plurality of intermediate load supporting bar-like members 12 that constitute the fixed loading platform 2 together with the front end portions of the loading platform supporting rails 5a and 5b are arranged side by side in the lateral width direction, a plurality of engagement members are arranged on the shelf side. A plurality of engaged portions 32 arranged in parallel in the left-right width direction can be provided on the rear side of the lower movable carrier 3 so as to constitute the joint portion 33 and correspond to each of the plurality of engaging portions 33.

  In the third embodiment shown in FIGS. 15 and 16, the configuration of the engaged portion on the lower movable carrier 3 side in the second embodiment is changed. That is, the engaged portion 37 on the lower movable load platform 3 side in the third embodiment is a vertically long rectangular attached to the lower side of the central portion of the left and right direction connecting member 14b at the rear end of the lower movable load platform 3 so as to be swingable up and down. A frame-shaped member 38 is used. As the vertically long rectangular frame member 38, a wire rod bent into a rectangular frame shape so that the butted portions at both ends thereof are located at the center of the upper short side can be used. Is supported by a horizontal through-hole portion 39a in the horizontal direction in the horizontal direction formed in a support member 39 attached to the central portion of the horizontal direction connecting member 14b. Various structures of the support member 39 are conceivable, but the illustrated one is a hat-shaped attachment that covers the front and rear ends of the board 39b applied to the lower side of the left and right direction connecting member 14b and that covers the left and right direction connecting member 14b from above. The front and rear ends of the plate 39c are connected by bolts and nuts, and the horizontal through-hole portion 39a includes a left-right direction connecting member 14b, a substrate 39b, a mounting plate 39c, and a right-direction connecting member 14b and the mounting plate 39c. It is formed by a void surrounded by a spacer 39d interposed therebetween.

  According to the engaged portion 37 in the third embodiment, when the lower movable platform 3 is located behind the forward limit position, the vertically long rectangular frame-shaped member 38 is gravity as shown by an imaginary line in FIG. When the lower movable carrier 3 that slides forward and reaches a little before the forward limit position, the shelf side is placed in the rectangular through hole 38a inside the vertically long rectangular frame member 38 that is hanging down. Engaging portion 33, that is, the protruding end portion 12a of the intermediate load supporting rod-shaped member 12 enters, and the protruding end of the intermediate load supporting rod-shaped member 12 as the lower movable loading platform 3 slides forward as it is. When the vertically long rectangular frame-shaped member 38 fitted to the portion 12a is pulled forward and tilted and the lower movable carrier 3 reaches the forward limit position, the rectangular through-hole inside the vertically long rectangular frame-shaped member 38 The lower side portion of the portion 38a is the intermediate load supporting rod-shaped portion 12 is engaged with a corner between the protruding end portion 12a and the left and right horizontal horizontal beam members 10a and 10b on the lower side, and the lower movable loading platform 3 is lifted from the loading platform support rails 5a and 5b. Can be prevented.

  The fourth embodiment shown in FIGS. 17 to 19 will be described. The engaged portion 40 on the lower movable load carrier 3 side in the fourth embodiment is a central portion of the left and right direction connecting member 14b at the rear end of the lower movable load carrier 3. A pair of left and right through-holes 42a and 42b in the front-rear direction are provided in the vertical plate portion 41 that is attached to and suspended from the vertical plate portion 41 so as to be located on both left and right sides of the intermediate load supporting rod-like member 12 constituting the fixed load platform 2. doing. In order to provide a pair of left and right through-holes 42a and 42b in one vertical plate 41, the vertical plate 41 having a large lateral width in the left and right direction is used. A notch recess 41a is provided in which the intermediate load supporting rod-shaped member 12 can relatively move back and forth from the lower side of the center. The rack-side engaging portions 43 are provided on the left and right sides of the intermediate load supporting rod-shaped member 12 of the fixed load platform 2, and the left and right horizontal horizontal beams on the rear side on which the intermediate load supporting rod-shaped member 12 is placed and fixed. A pair of left and right cantilevered bar-like members 45a and 45b are mounted on the members 10a and 10b via supporting belt-like plates 44a and 44b. The support strips 44a and 44b have their front ends facing left and right sideways on both ends of the seat plate 46 for mounting the intermediate load supporting bar member 12 on the horizontal beam members 10a and 10b. The rod-shaped member mounting seat 47 is formed by bending and fixing the front end portion which is fixed together by bolts and nuts for mounting on the horizontal beam members 10a and 10b and extending forward to a right angle. The rod-shaped members 45a and 45b are fixed to the rod-shaped member mounting seats 47 of the supporting belt-like plates 44a and 44b at a mounting portion 48 that bends perpendicularly downward from the front end thereof.

  According to the fourth embodiment described above, when the lower movable platform 3 slides forward from a position slightly before the forward limit position to the forward limit position, the engaged portion 40 at the rear end of the lower movable platform 3 is provided. The pair of left and right rod-like members 45a and 45b, which are the engaging portions 43 on the shelf side, penetrates relatively rearwardly into the pair of left and right through holes 42a and 42b, and the lower movable carriage 3 has reached the forward limit position. When the through holes 42a and 42b of the vertical plate portion 41 in the engaged portion 40 are fitted to the front end portions (end portions on the mounting portion 48 side) of the pair of left and right rod-like members 45a and 45b as shown in the figure. Thus, the lower movable loading platform 3 can be prevented from being lifted from the loading platform support rails 5a and 5b. When the lengths of the support strips 44a and 44b are increased, the positions in the vicinity of the front ends of the pair of left and right support strips 44a and 44b are integrally connected by a lateral connection plate 49 as shown in the figure. When the connecting plate 49 is brought into contact with or fixed to the bottom surface of the intermediate load supporting bar-like member 12, the upper movable load carrier 3 is prevented from being lifted up, so that the supporting belt-like plates 44a and 44b are bent upward. It is possible to prevent the rod-like members 45a and 45b from being pulled upward with deformation.

  The shelf with a movable bed according to the present invention allows the movable bed to adhere to the load even when a load (including a pallet that supports the object to be conveyed) is easily stuck on the movable bed. It can be used as a shelf that can eliminate the harmful effects of floating.

1A, 1B Load storage space 2 Fixed load platform 3 Lower movable load platform 4 Upper movable load platform 5a, 5b Load support rails 6A, 6B Support frame structure 7a-8b Columns 9a-10b Left and right horizontal beam members 11a, 11b Brace members 12 Intermediate load supporting rod-shaped member 12a Projecting end (engaging portion) of intermediate load supporting rod-shaped member
13a, 13b Front-rear angle members 14a-14c Left-right direction connecting members 15, 21 Rectangular frame-shaped main body 16, 22 Supporting wheels 17, 23 Anti-sway rollers 19a, 19b Front-rear direction members 20a-20c Left-right direction connecting members 24, 25 Columnar member 26a, 26b, 32, 37, 40 Engagement portion 27a, 27b, 33, 43 Engagement portion 28 Channel member 29, 36, 42a, 42b Through hole 30, 45a, 45b Bar member 31 Buffer member 35 Band shape Plate 38 Long rectangular frame-shaped member 39a Horizontal through-hole portion 41 Vertical plate portion 41a Notch recess 44a, 44b Supporting strip-like plate 49 Connecting plate C1-C3 load

Claims (6)

At the bottom of the load storage space that is long in the depth direction of the shelf, a load carrier support rail that is inclined so that the back side of the shelf is raised is installed, and a fixed load carrier portion is provided at a position adjacent to the entrance of the load storage space, a constructed shelves to movably supported movable loading platform onto a loading platform supporting rail can slide by gravity to the advance limit position overlying the fixed bed portion, and slide on the loading platform support rails When the movable platform reaches the forward limit position, the movable platform is engaged with an engaged portion provided in the movable platform in the movable platform movement direction to prevent the movable platform from being lifted from the platform support rail. In the shelf with a movable bed that the part is provided on the shelf side ,
The engaged portion is provided at an end portion on the back side of the shelf of the movable loading platform, and the engaging portion is provided at an end portion on the back side of the shelf of the fixed loading platform portion . The engaged portion is configured by a member provided with a through-hole projecting downward from the movable platform and penetrating in the movable platform movement direction, and the engaging portion is parallel to the movable platform movement direction and the load 2. The device according to claim 1, wherein only the entrance side of the storage space is formed of a cantilevered bar member supported on the shelf side, and the bar member is configured to be inserted through the through hole of the engaged portion . Shelves with movable bed. When the movable carrier reaches the forward limit position, the movable carrier side abutment surface of the shelf-side restraining surface and the movable carrier side abutment surface that are in contact with each other is constituted by a buffer member, and the buffer member is movable. The shelf with a movable load platform according to claim 1 or 2 , wherein a buffer member mounting plate for mounting on the load platform is extended laterally, and the engaged portion is provided in the extended portion . The shelf with a movable load platform according to any one of claims 1 to 3 , wherein a pair of the engaged portion and the engagement portion are provided symmetrically with respect to the movable load platform. The end portion on the back side of the shelf of the load supporting rod-shaped member parallel to the movable loading platform moving direction constituting the fixed loading platform portion protrudes to the back of the shelf from the lateral beam member that supports the load supporting rod-shaped member, The shelf with a movable cargo bed of any one of Claims 1-4 in which the protrusion edge part of this rod-shaped member for load support comprises the said engaging part . The shelf with a movable carrier according to claim 5 , wherein the engaged portion is configured by a swinging member that is supported by an end portion on the back side of the shelf of the movable carrier so as to freely swing vertically .

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