Multi-layer drawing type heavy roller storage shelf

Abstract

The invention discloses a multi-layer drawing type heavy roller storage rack, and belongs to the field of storage racks. The storage shelf comprises a plurality of stand columns, cross beams are fixedly installed at the upper ends, the lower ends and the middle positions of the outer surfaces of the stand columns, a plurality of bearing supports are arranged on the outer surfaces of the two stand columns at the foremost end, and protective doors are rotationally installed on the front end faces of the stand columns through the bearing supports; a first guide rail is fixedly installed in the middle of the inner walls of the multiple stand columns on the same side, and a second guide rail is fixedly installed in the middle of one side of the inner wall of the bearing support. Through the design of two-layer independent drawing and one-layer fixing, and in cooperation with embedded supporting of the first guide rail and the second guide rail, the vertical space can be fully utilized to achieve layered storage of the roller body, and the problem of space waste of a traditional single-layer goods shelf is solved; and each layer of drawer-type support can be independently pulled and operated, goods on other layers do not need to be moved when the roller body on a certain layer is stored and taken, the time cost of goods carrying and adjusting is reduced, and the storage space utilization rate and the goods storing and taking efficiency are improved.

Description

Technical Field

[0001] This invention pertains to warehouse racking technology, specifically, to a multi-layer pull-out heavy-duty roller warehouse rack. Background Technology

[0002] Roller racking is a type of storage equipment used to store large rollers (such as conveyor rollers with a diameter of 0.5 meters to 1.5 meters or more and a weight of several tons). It is widely used in coal ports, large logistics transfer centers, mines, and heavy industrial production lines. Its core function is to achieve centralized storage, classified management, and convenient access to rollers through structured support and spatial layout. It provides a stable and orderly hardware foundation for the storage of heavy rollers and is an important warehousing facility to ensure the efficient operation of large enterprise supply chains.

[0003] In practical applications, existing roller storage racks and storage methods are mostly single-layered or fixed-height designs, only enabling horizontal arrangement of rollers and failing to effectively utilize vertical space. This results in extremely low storage capacity per unit area (SKU density). For rollers with larger diameters and lengths, even flat stacking on the ground is necessary, further exacerbating the waste of storage space and failing to meet the demands of modern large-scale warehousing for intensive space utilization. Furthermore, existing rack operations rely on cranes, forklifts, and other large equipment combined with manual hooking and positioning. This requires multiple people working together, is time-consuming, and poses risks during roller lifting and movement, such as slippage of slings, roller shifting, or accidental personnel entering the work area. While some racks are equipped with simple pull-out structures, their load-bearing capacity is limited (usually not exceeding 1 ton) and they lack reliable locking devices, making them unsuitable for the safe storage and retrieval of heavy-duty rollers.

[0004] To address these issues, we propose a multi-layer pull-out heavy-duty roller storage rack. Summary of the Invention

[0005] In view of the above-mentioned problems in the existing technology, the purpose of the present invention is to provide a multi-layer pull-out heavy-duty roller storage rack.

[0006] To solve the above problems, the technical solution adopted by the present invention is as follows: A multi-layer pull-out heavy-duty roller storage rack includes rollers and several uprights. These uprights are fixed to a single frame structure at the top, middle, and bottom by several crossbeams. The frame structure has two double-sided, openable protective doors rotatably connected to its front. Multiple layers of primary guide rails are fixed to the inner side of the frame structure. Each layer of primary guide rails is paired and fixed to the uprights. Corresponding to each pair of paired primary guide rails on each layer, two secondary guide rails are fixed to the two protective doors. These secondary guide rails can connect with the primary guide rails after the protective doors are rotated 90°. Each layer of the first guide rail is also provided with a support mechanism, which includes a drawer-type bracket, a fixed frame, and an I-beam bracket. The drawer-type bracket has guide grooves on both sides and is slidably installed between two opposite first guide rails through the guide grooves. The fixed frame is fixedly installed on the top of the drawer-type bracket, and a fixed groove is provided in the middle of the inner wall of the fixed frame. The I-beam bracket includes two brackets and is symmetrically and movably installed on the inner wall of the fixed groove. A placement seat is also fixed at the center of the top surface of each I-beam bracket, and both ends of the roller body are fixed in the placement seat. The fixed frame is equipped with a spacing adjustment component to adjust the spacing between the two I-beam brackets; the column is also equipped with a rotating structure below the corresponding drawer-type bracket, and the rotating component is used to control the drawer-type bracket to slide along the first guide rail and the second guide rail. Each of the protective doors is also provided with a locking mechanism at the bottom to keep the protective door fixed on the ground after it has been flipped over.

[0007] Furthermore, the rotating structure includes a fixed plate, which is symmetrically welded to the front and rear ends of the bottom of the crossbeam. A connector is fixedly installed on the bottom edge of the drawer-type bracket. A threaded support rod is rotatably installed between the two fixed plates through the connector. One end of the threaded support rod extends to the outside of the fixed plate and is provided with a driving part. The other end of the threaded support rod extends to the outside of the fixed plate and is provided with a second external handle.

[0008] Furthermore, a first threaded hole is provided through the middle of one end of the connector, and one side of the outer surface of the threaded support rod is located in the first threaded hole, and the threaded support rod and the first threaded hole are mutually adapted.

[0009] Furthermore, the locking mechanism includes a limiting bracket, which is fixedly installed on the bottom of the outer surface of the protective door. A fixed inner groove is opened through the middle of the top of the limiting bracket. A locking component is movably installed inside the fixed inner groove. A movable connecting rod is rotatably installed on the upper surface of the locking component. A positioning pull rod is hinged to the top of the movable connecting rod. The middle of the positioning pull rod is rotatably installed at the top of the fixed inner groove.

[0010] Furthermore, the spacing adjustment component includes a bidirectional lead screw, which passes through the I-beam bracket and is rotatably mounted on both sides of the middle of the inner wall of the fixed groove. A first external handle is installed on one side of the bidirectional lead screw extending to the outside of the fixed frame.

[0011] Furthermore, a second threaded hole is provided through the middle of one side of the I-beam bracket, and external threads with opposite thread patterns are provided on both sides of the outer surface of the bidirectional lead screw, and the bidirectional lead screw and the second threaded hole are adapted to each other.

[0012] Furthermore, the bottom of the protective door is symmetrically and fixedly equipped with support bases, and the bottom surface of the support bases abuts against the ground.

[0013] Furthermore, both the first guide rail and the second guide rail are located inside the guide groove, and both the first guide rail and the second guide rail are interlocked with the guide groove.

[0014] Furthermore, the outer surface of the column is provided with several bearing supports at the corresponding first guide rail of each floor, and the front end of the column is rotatably connected to the two protective doors through the bearing supports.

[0015] Furthermore, the two frontmost columns are arranged in a staggered manner, with the column on the right side of the front face extending to the outside of the crossbeam. There is a certain gap between the single protective door on the right and the crossbeam, and the single protective door on the left is placed between the crossbeam and the protective door on the right. The two protective doors are stacked in an alternating manner.

[0016] Compared with the prior art, the beneficial effects of the present invention are as follows: (1) This invention, through “two-layer independent pull-out design + one-layer fixed design, combined with the interlocking support of the first guide rail and the second guide rail”, can make full use of vertical space to realize the layered storage of the roller body, avoiding the problem of wasted space in traditional single-layer shelves; and each layer of drawer-type support can be pulled out independently, so when storing or retrieving the roller body of a certain layer, there is no need to move the goods of other layers, reducing the time cost of goods handling and adjustment, and improving the utilization rate of storage space and the efficiency of goods storage and retrieval. (2) The present invention can flexibly adjust the distance between the two I-beam supports by using the bidirectional screw in the fixed frame, thereby adapting to the storage needs of roller bodies with different diameters and lengths. There is no need to replace the special storage rack or make complicated adjustments for rollers of different sizes, which reduces the complexity of equipment replacement and adaptation, and improves the adaptability of the rack to rollers of different specifications and the efficiency of storage operations. (3) The present invention uses the rotating structure of "threaded support rod and connector" in conjunction with the interlocking and guiding of the first guide rail, the second guide rail and the guide groove to drive the drawer bracket to slide smoothly along the guide rail. It does not require the assistance of large equipment such as cranes and forklifts to pull out the drawer. A single person or a small number of staff can complete the operation of pulling out the drawer bracket, which reduces the waiting time and collaborative operation cost of calling large equipment, and improves the ease of operation and efficiency of goods storage and retrieval of the drawer bracket. (4) The present invention enables two protective doors to be opened by staggered stacking of the two frontmost columns, avoiding the problem of mutual obstruction after the traditional protective doors are opened; at the same time, the locking mechanism can quickly fix the protective doors after they are opened, and the support base provides stable support for the protective doors, eliminating the need for staff to continuously hold the protective doors or frequently adjust their positions, reducing the interference and adjustment time of the protective door operation, and improving the smoothness and efficiency of the overall operation process. (5) The present invention provides positioning support for the roller body by placing a seat, and with the smooth movement of the drawer-type bracket and guide rail, it can reduce the rolling and collision problems caused by the center of gravity shift during the storage and retrieval of the roller body. No additional manual hooking or positioning is required, which reduces the positioning adjustment time and safety risks when storing and retrieving the roller body, and indirectly improves the efficiency and safety of goods storage and retrieval. Attached Figure Description

[0017] Figure 1 This is a schematic diagram of the overall structure provided for an embodiment of the present invention; Figure 2 This is a schematic diagram of the column structure provided in an embodiment of the present invention; Figure 3 This is a schematic diagram of the protective door structure provided in an embodiment of the present invention; Figure 4 This is a schematic diagram of a threaded support rod structure provided in an embodiment of the present invention; Figure 5 This is a top view of the drawer-type bracket structure provided in an embodiment of the present invention; Figure 6 This is a schematic diagram of the fixed frame structure provided in an embodiment of the present invention; Figure 7 This is a schematic diagram of the connector structure provided in an embodiment of the present invention; Figure 8 Provided for embodiments of the present invention Figure 1 A magnified schematic diagram of part A in the diagram.

[0018] Explanation of reference numerals in the attached figures: 1. Column; 2. Horizontal beam; 3. Bearing support; 4. Protective door; 5. Support base; 6. No. 1 guide rail; 7. No. 2 guide rail; 8. Drawer-type bracket; 9. Guide slide; 10. Fixing frame; 11. Two-way lead screw; 12. Fixing groove; 13. I-beam bracket; 14. Placement seat; 15. Roller body; 16. Fixing plate; 17. Threaded support rod; 18. Drive unit; 19. Connecting piece; 20. Limiting bracket; 21. Fixing inner groove; 22. Locking fastener; 23. Movable connecting rod; 24. Positioning pull rod; 25. First outer handle; 26. Second outer handle. Detailed Implementation

[0019] The present invention will be further described below with reference to specific embodiments.

[0020] like Figures 1-8 As shown, This invention provides a multi-layer pull-out heavy-duty roller storage rack, including several uprights 1. A crossbeam 2 is fixedly installed at the top and bottom ends and the middle position of the outer surface of the multiple uprights 1. Several bearing supports 3 are provided on the outer surface of the two foremost uprights 1. A protective door 4 is rotatably installed on the front end face of the uprights 1 through the bearing supports 3. The two foremost uprights 1 are arranged in a staggered arrangement. The upright 1 on the right side of the front end face extends to the outside of the crossbeam 2. There is a certain gap between the single protective door 4 on the right side and the crossbeam 2. The single protective door 4 on the left side is placed between the crossbeam 2 on the right side and the protective door 4. The two protective doors 4 are stacked in an alternating manner. Support seats 5 are symmetrically fixedly installed at the bottom of the protective doors 4. The bottom surface of the support seats 5 abuts against the ground. A first guide rail 6 is fixedly installed at the middle position of the inner wall of the multiple uprights 1 on the same side. A second guide rail 7 is fixedly installed at the middle position of one side of the inner wall of the bearing supports 3. Support mechanisms are provided on the outer surfaces of the first guide rail 6 and the second guide rail 7. The support mechanism includes a drawer-type bracket 8, which is movably installed between two symmetrical guide rails 6. Guide grooves 9 are provided on both sides of the drawer-type bracket 8. Guide rails 6 and 7 are located inside the guide grooves 9 and are interlocked with each other. A fixed frame 10 is fixedly installed on the upper surface of the drawer-type bracket 8. A fixed groove 12 is provided in the middle of the inner side wall of the fixed frame 10. I-beam brackets 13 are symmetrically and movably installed inside the fixed groove 12. A placement seat 14 is fixedly installed at the top center of the I-beam bracket 13. A roller body 15 is placed on the upper surface of the placement seat 14. The fixed frame 10 is provided with a spacing adjustment component for adjusting the spacing between the two I-beam brackets 13. The spacing adjustment component includes a two-way screw rod 11, which passes through the I-beam bracket 13 and is rotatably installed in the middle of both sides of the inner wall of the fixed groove 12. A first outer handle 25 is installed on one side of the two-way screw rod 11 extending to the outside of the fixed frame 10. A second threaded hole is provided through the middle of one side of the I-beam bracket 13, and external threads with opposite thread patterns are provided on both sides of the outer surface of the bidirectional lead screw 11. The bidirectional lead screw 11 and the second threaded hole are mutually compatible. The outer surface of the column 1, located below the drawer-type bracket 8, is also equipped with a rotating structure to control the movement of the drawer-type bracket 8 along the outer surfaces of the first guide rail 6 and the second guide rail 7. A locking mechanism is also provided at the bottom corner of the protective door 4 to keep the protective door 4 fixed after it is opened.

[0021] Working principle: In use, the operator can first adjust the spacing between the two I-beam supports 13 by adjusting the spacing: rotating the first outer handle 25 drives the bidirectional lead screw 11 to rotate. Since the external threads with opposite threads on both sides of the outer surface of the bidirectional lead screw 11 are compatible with the second threaded holes of the I-beam supports 13, and the two I-beam supports 13 are symmetrically distributed in the fixing groove 12, when the bidirectional lead screw 11 rotates, it will drive the two I-beam supports 13 to move closer or further away from each other along the inner wall of the fixing groove 12, thereby adjusting the spacing between the placement seat 14 and the roller body 15, so as to adapt to roller bodies 15 of different sizes (in this process, the fixing frame 10 plays a guiding role for the movement of the I-beam supports 13, ensuring that the spacing adjustment process is smooth and stable). Next, the drawer-type bracket 8 slides along the first guide rail 6 and the second guide rail 7 using a rotating structure. When the rotating structure is in operation, the drawer-type bracket 8 can be smoothly pulled out or pushed back from between the uprights 1 under the interlocking action of the guide groove 9 and the first guide rail 6 and the second guide rail 7 (the first guide rail 6 and the second guide rail 7 provide support and guidance for the drawer-type bracket 8, preventing the drawer-type bracket 8 from tilting or getting stuck during the pulling process); at the same time, the two uprights 1 at the front end, which are staggered, allow the protective doors 4 to be stacked in an alternating manner, so that the protective doors 4 do not interfere with each other when opened. The support base 5 at the bottom of the protective door 4 provides bottom support for the protective door 4, enhancing the stability of the protective door 4 after it is opened; the locking mechanism can fix the protective door 4 after it is opened, preventing the protective door 4 from shaking and affecting the operation.

[0022] The rotating structure includes a fixed plate 16, which is symmetrically welded to the front and rear ends of the bottom of the crossbeam 2. A connector 19 is fixedly installed on the bottom edge of the drawer-type bracket 8. A threaded support rod 17 is rotatably installed between the two fixed plates 16 through the connector 19. One end of the threaded support rod 17 extends to the outside of the fixed plate 16 and is provided with a drive part 18, which is a servo motor. The other end of the threaded support rod 17 extends to the outside of the fixed plate 16 and is provided with a second external handle 26. The connector 19 has a first threaded hole through the middle of one end, and one side of the outer surface of the threaded support rod 17 is located in the first threaded hole. The threaded support rod 17 and the first threaded hole are compatible with each other.

[0023] Working principle: When it is necessary to control the movement of the drawer-type bracket 8 along the first guide rail 6 and the second guide rail 7, the operator can operate the rotating structure. If driven by the drive unit 18 (servo motor), the drive unit 18 will drive the threaded support rod 17 to rotate; or the second outer handle 26 can be directly rotated to make the threaded support rod 17 rotate. Since the outer surface of the threaded support rod 17 is adapted to the first threaded hole of the connector 19, when the threaded support rod 17 rotates, it will drive the connector 19 to move along the axial direction of the threaded support rod 17 through the threaded transmission. The connector 19 is fixedly connected to the drawer-type bracket 8. Therefore, the movement of the connector 19 will drive the drawer-type bracket 8 to move synchronously, thereby making the drawer-type bracket 8 slide smoothly along the outer surface of the first guide rail 6 and the second guide rail 7 (the fixed plate 16 provides rotational support for the threaded support rod 17 to ensure the stable rotation of the threaded support rod 17, thereby ensuring that the drawer-type bracket 8 can be pulled out smoothly and accurately).

[0024] The locking mechanism includes a limiting bracket 20, which is fixedly installed at the bottom corner of the outer surface of the protective door 4. A fixed inner groove 21 is provided through the middle of the top of the limiting bracket 20. A locking device 22 is movably installed inside the fixed inner groove 21. A movable connecting rod 23 is rotatably installed on the upper surface of the locking device 22. A positioning pull rod 24 is hinged to the top of the movable connecting rod 23. The middle of the positioning pull rod 24 is rotatably installed at the top of the fixed inner groove 21.

[0025] Working principle: When it is necessary to keep the opened protective door 4 fixed, the operator operates the locking mechanism and pulls down the positioning rod 24, causing the locking device 22 to move downward within the fixed inner groove 21, while simultaneously moving the movable connecting rod 23. When the movable connecting rod 23 moves, since the middle part of the positioning rod 24 is rotated and installed at the top of the fixed inner groove 21, the positioning rod 24 will rotate around its central rotation point, allowing the bottom of the locking device 22 to be inserted into the pre-set locking hole in the ground (or cooperate with other ground locking structures), thereby fixing the position of the protective door 4. When it is necessary to release the fixation, push the positioning rod 24 upward. Through the linkage between the movable connecting rod 23 and the positioning rod 24, the locking device 22 is disengaged from the ground locking structure, thus releasing the fixed state of the protective door 4 (the limit bracket 20 provides installation and movement space for the locking device 22, the movable connecting rod 23, and the positioning rod 24, ensuring reliable and stable locking action).

[0026] The technical scope of this invention is not limited to the content described above. Those skilled in the art can make various modifications and variations to the above embodiments without departing from the technical concept of this invention, and all such modifications and variations should fall within the protection scope of this invention.

Claims

1. A multi-layer pull-out heavy-duty roller storage rack, characterized in that, The system includes rollers and several uprights. These uprights are fixed at the top, middle, and bottom ends by several crossbeams to form a single frame structure. Two double-sided, openable protective doors are rotatably connected to the front of the frame structure. Multiple layers of guide rails are fixed to the inner side of the frame structure. Each layer of guide rails is paired and fixed to the uprights. Corresponding to each pair of paired guide rails on each layer, two protective doors are fixed with corresponding guide rails. These guide rails can mate with the guide rails after the protective doors are rotated 90°. Each layer of the first guide rail is also provided with a support mechanism, which includes a drawer-type bracket, a fixed frame, and an I-beam bracket. The drawer-type bracket has guide grooves on both sides and is slidably installed between two opposite first guide rails through the guide grooves. The fixed frame is fixedly installed on the top of the drawer-type bracket, and a fixed groove is provided in the middle of the inner wall of the fixed frame. The I-beam bracket includes two brackets and is symmetrically and movably installed on the inner wall of the fixed groove. A placement seat is also fixed at the center of the top surface of each I-beam bracket, and both ends of the roller body are fixed in the placement seat. The fixed frame is equipped with a spacing adjustment component to adjust the spacing between the two I-beam brackets; the column is also equipped with a rotating structure below the corresponding drawer-type bracket, and the rotating component is used to control the drawer-type bracket to slide along the first guide rail and the second guide rail. Each of the protective doors is also provided with a locking mechanism at the bottom to keep the protective door fixed on the ground after it has been flipped over.

2. The multi-layer pull-out heavy-duty roller storage rack according to claim 1, characterized in that, The rotating structure includes a fixed plate, which is symmetrically welded to the front and rear ends of the bottom of the crossbeam. A connector is fixedly installed on the bottom edge of the drawer-type bracket. A threaded support rod is rotatably installed between the two fixed plates through the connector. One end of the threaded support rod extends to the outside of the fixed plate and is provided with a driving part. The other end of the threaded support rod extends to the outside of the fixed plate and is provided with a second external handle.

3. The multi-layer pull-out heavy-duty roller storage rack according to claim 2, characterized in that, The connector has a first threaded hole through the middle of one end, and one side of the outer surface of the threaded support rod is located in the first threaded hole. The threaded support rod and the first threaded hole are compatible with each other.

4. The multi-layer pull-out heavy-duty roller storage rack according to claim 1, characterized in that, The locking mechanism includes a limiting bracket, which is fixedly installed on the bottom of the outer surface of the protective door. A fixed inner groove is opened through the middle of the top of the limiting bracket. A locking component is movably installed inside the fixed inner groove. A movable connecting rod is rotatably installed on the upper surface of the locking component. A positioning pull rod is hinged to the top of the movable connecting rod. The middle of the positioning pull rod is rotatably installed at the top of the fixed inner groove.

5. The multi-layer pull-out heavy-duty roller storage rack according to claim 1, characterized in that, The spacing adjustment component includes a bidirectional lead screw, which passes through the I-beam bracket and is rotatably installed on both sides of the middle of the inner wall of the fixed groove. A first external handle is installed on one side of the bidirectional lead screw extending to the outside of the fixed frame.

6. The multi-layer pull-out heavy-duty roller storage rack according to claim 5, characterized in that, The I-beam bracket has a second threaded hole through the middle of one side, and the two sides of the outer surface of the bidirectional lead screw have external threads with opposite thread patterns. The bidirectional lead screw and the second threaded hole are compatible with each other.

7. The multi-layer pull-out heavy-duty roller storage rack according to claim 1, characterized in that, The bottom of the protective door is symmetrically and fixedly equipped with support bases, and the bottom surface of the support bases abuts against the ground.

8. The multi-layer pull-out heavy-duty roller storage rack according to claim 1, characterized in that, Both the first guide rail and the second guide rail are located inside the guide groove, and both the first guide rail and the second guide rail are interlocked with the guide groove.

9. The multi-layer pull-out heavy-duty roller storage rack according to claim 1, characterized in that, The outer surface of the column is provided with several bearing supports at the corresponding first guide rail of each floor, and the front end of the column is rotatably connected to the two protective doors through the bearing supports.

10. The multi-layer pull-out heavy-duty roller storage rack according to claim 9, characterized in that, The two frontmost columns are arranged in a staggered manner. The column on the right side of the front face extends to the outside of the crossbeam. There is a certain gap between the single protective door on the right and the crossbeam. The single protective door on the left is placed between the crossbeam and the protective door on the right. The two protective doors are stacked in an alternating manner.

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