A dense warehouse logistics storage system based on a fork-type layer-changing elevator

Abstract

The present invention discloses a dense warehouse logistics storage system based on a fork-type layer-changing elevator, which belongs to the field of storage logistics equipment technology. The system includes a dense three-dimensional shelf and a cargo pallet, on which the cargo body is placed. A fork-type layer-changing elevator for conveying the cargo pallet and the cargo body is fixedly connected to one side of the dense three-dimensional shelf. The present invention realizes the efficient operation of the four-way vehicle dense storage system through reasonable layout of storage space, precise positioning technology for entering and exiting the warehouse, efficient operation speed and position accuracy control technology of four-way vehicles, innovative structural technology for improving storage space utilization, and optimized system control technology. At the same time, the interface structure is refined to ensure the safety and reliability of the operation processes such as entering and exiting the warehouse, changing layers of four-way vehicles, etc. Its automation and intelligent characteristics not only reduce operating costs, but also improve the safety and flexibility of the system, and can meet the diversified needs of the future development of the logistics industry.

Description

Technical Field

[0001] The present invention relates to the technical field of warehousing and logistics equipment, and in particular to a dense warehouse logistics warehousing system based on a fork-type layer-changing elevator. Background Art

[0002] With economic development, land resources are becoming increasingly scarce. The space utilization rate of traditional warehouses is low, and a warehousing solution that can store more goods in a limited space is needed. As the main lifting and transportation equipment in automated warehouses, aisle stacker cranes have evolved from manual control, semi-automatic control, and fully automatic control to the digital control era after decades of development.

[0003] Compared with traditional aisle stacker crane solutions, four-way shuttle car (abbreviated as four-way car) dense warehouses are more cost-effective. Multiple four-way cars can be used in one aisle to improve the aisle's in-and-out rate. The overall efficiency is more than 30% higher than that of aisle stacker cranes. The four-way car dense warehouse can achieve dense storage of goods through a three-dimensional storage structure. The storage capacity can be increased several times compared to traditional warehouses, effectively solving the problem of tight land resources and reducing unit storage costs.

[0004] A Chinese patent discloses a dense warehouse and storage solution using an embedded elevator (Announcement No. CN119117516A). This patented technology is based on the embedded elevator, which can effectively reduce the occupation of storage space and improve storage utilization. The front and rear cache positions formed by the front and rear tracks of the lifting platform can, on the one hand, simplify the planning and design of the entry and exit routes, and on the other hand, achieve the improvement of the efficiency of the entry and exit of the automated warehouse space through the connection and scheduling of different walking equipment, thereby reducing its construction cost and construction period.

[0005] However, the device adopts a dense warehouse with built-in elevators and its storage solution. Compared with the fixed stacking robot solution, the elevator solution has low lifting efficiency and poor docking accuracy, and the elevator occupies more storage space. In order to meet the higher work efficiency of the vertical warehouse, the number of elevators needs to be increased, which will occupy more space. Summary of the Invention

[0006] In order to solve the problems in the above background technology, we propose a dense warehouse logistics storage system based on a fork-type layer-changing elevator.

[0007] The technical solution is mainly: a dense warehouse logistics storage system based on a fork-type layer-changing elevator, including dense three-dimensional shelves and cargo pallets, the cargo pallets are placed on the cargo bodies, and one side of the dense three-dimensional shelves is fixedly connected to a fork-type layer-changing elevator for conveying cargo pallets and cargo bodies. The dense three-dimensional shelves are arranged in multiple layers, and each layer of the dense three-dimensional shelves is provided with a four-way vehicle assembly for transferring cargo pallets and cargo bodies;

[0008] The side of the dense three-dimensional shelf close to the fork-type layer-changing elevator is also fixedly connected with an integrated guide rail body and a material storage guide plate for facilitating the transfer of cargo pallets and cargo bodies.

[0009] Preferably, the dense three-dimensional shelf comprises a plurality of shelf columns, shelf mother rails and shelf sub-rails, a plurality of the shelf mother rails and shelf sub-rails are fixed to adjacent shelf columns, and two adjacent shelf mother rails and shelf sub-rails are arranged perpendicular to each other, the height of the shelf sub-rails is slightly higher than the shelf mother rails, and each layer of the dense three-dimensional shelf is provided with a plurality of vertically arranged mother lanes and sub-lanes, and the cross intersections of adjacent mother lanes and sub-lanes are fixedly connected with conversion rails for carrying the conversion of shelf mother rails and shelf sub-rails, and the upper oblique part of each shelf sub-rail is fixedly connected with a cargo rail for supporting cargo pallets and cargo bodies;

[0010] A barcode bracket is fixedly connected to each of the conversion rails, and a cargo location barcode and an anti-outward collision barcode are vertically pasted on the shelf sub-rails and the barcode brackets respectively.

[0011] Preferably, the bottom layer of the dense three-dimensional shelf is provided with a plurality of latent automatic guided vehicles for the in-and-out transfer of cargo pallets and cargo bodies, as well as the storage and transportation of materials on the bottom layer. One side of the dense three-dimensional shelf is also provided with a guide vehicle charging position and a four-way vehicle charging position for convenient charging of the latent automatic guided vehicles and four-way vehicle components.

[0012] Preferably, the fork-type layer-changing elevator includes an elevator base, the top of the elevator base is fixedly connected to an elevator column, the elevator column is slidably connected to an elevator loading platform, the elevator loading platform is fixedly connected to a fork body, and the elevator loading platform is also fixedly connected to a plurality of material width-limiting photoelectric detectors;

[0013] The top of the hoist base is also fixedly connected to a power support platform, and a winch hoist is fixedly connected in the power support platform. The output end of the winch hoist is connected to the hoist cargo platform.

[0014] Preferably, the four-way vehicle assembly includes a four-way vehicle body, and multiple groups of four-way vehicle sub-rail rollers and multiple groups of four-way vehicle mother rail rollers are respectively provided on the four sides of the four-way vehicle body, and the multiple groups of four-way vehicle sub-rail rollers and the multiple groups of four-way vehicle mother rail rollers are arranged perpendicular to each other, and the interior of the four-way vehicle body is fixedly connected with a roller driving device for driving the multiple groups of four-way vehicle sub-rail rollers and the four-way vehicle mother rail rollers to move, and the top of the four-way vehicle body is slidably connected with two groups of lifting plates for lifting materials, and the four corners of the interior of the four-way vehicle body are fixedly connected with electric push rods, and the output end of each of the electric push rods is fixed to the adjacent lifting plate;

[0015] A plurality of upper detectors are fixedly connected to the four corners of the top of the four-way vehicle body, and a plurality of side detectors are fixedly connected to the four sides of the four-way vehicle body.

[0016] Preferably, each of the four-way vehicle bodies is further provided with two sets of auxiliary limit assemblies, the auxiliary limit assemblies comprising auxiliary limit plates, the auxiliary limit plates being slidably provided on one side of the four-way vehicle body, both sides of the auxiliary limit plates being fixedly connected with sliding blocks, and the inner wall of the four-way vehicle body being provided with a sliding groove for the sliding blocks to slide;

[0017] The bottom of the auxiliary limiting plate is slidably connected to an adjusting plate, a plurality of connecting rods are hinged on the side wall of the adjusting plate, and the other end of each connecting rod is hinged to the inner wall of the auxiliary limiting plate.

[0018] Preferably, the end of the adjustment plate away from the auxiliary limit plate is further fixedly connected to a second synchronous rack, the upper part of the second synchronous rack is meshed with a transmission gear, a connecting rod is fixedly connected to the transmission gear, and both ends of the connecting rod are fixedly connected to synchronous gears, and the two synchronous gears are rotatably connected to the inner wall of the four-way vehicle body;

[0019] The bottoms of the two lifting plates are also fixedly connected with two groups of first synchronization racks, and each of the first synchronization racks is meshed with an adjacent synchronization gear.

[0020] Preferably: both ends of the integrated guide rail body are fixedly connected with anti-outward impact baffles, the integrated guide rail body is also provided with a first guide slope and a second guide slope, and the integrated guide rail body is also provided with an integrated guide rail cargo position and an integrated guide rail sub-rail.

[0021] Preferably: the material storage guide plate is arranged obliquely above the integrated guide rail body, and a material falling guide surface is provided on the material storage guide plate. Both ends of the material storage guide plate are also fixedly connected with a material entry guide surface and a material exit guide surface for convenient entry and exit.

[0022] Technical effects and advantages of the present invention:

[0023] In the present invention, the fork-type layer-changing elevator adopts a fixed installation, which is similar to a fixed stacking robot replacing a walking aisle stacker, and is fixed to one side of the shelf, taking up a smaller space. Compared with the ordinary elevator solution, the occupied storage space is reduced by 2 / 3. At the same time, the shelf adopts a dense structure, and the parent-child aisle tracks are distributed vertically and horizontally on the lower side of the shelf inventory rails. The four-way vehicle shuttles between the parent-child tracks of the shelf and the entry and exit interfaces. The storage space layout is compact and regular. Through the coordinated operation of the fork-type layer-changing elevator and the four-way vehicle, the vertical space of the warehouse is fully utilized. Whether it is direct storage on the bottom floor or multi-layer storage through the layer-changing elevator, the storage capacity of the warehouse is greatly improved. This vertical storage method not only reduces the floor area, but also makes every inch of space in the warehouse reasonably utilized.

[0024] At the same time, in terms of the position accuracy control of the four-way vehicle, multi-point code scanning and calibration control technology, as well as anti-outward impact code scanning control technology and anti-collision and obstacle avoidance photoelectric control technology are adopted to effectively control the position accuracy and safety protection of the four-way vehicle.

[0025] The present invention uses an automated four-way shuttle vehicle and an intelligent control system to achieve rapid cargo storage, retrieval, and transportation, reduce manual operation time, and improve overall warehousing efficiency. Compared with traditional high-bay warehouses, the four-way shuttle vehicle dense warehouse storage system has a simpler structure, reduces the maintenance complexity of equipment and site, and reduces operating costs. At the same time, automated operation reduces human intervention and reduces the risk of cargo damage and personal injury. At the same time, the intelligent system can monitor the storage environment in real time to ensure safe operation.

[0026] In the present invention, the shelves of the four-way dense vehicle warehouse can achieve high-density storage, make full use of warehouse space, and reduce the demand for warehouse area. The high storage density directly improves storage efficiency and achieves higher storage efficiency in a limited space. It is particularly suitable for areas with tight land resources. At the same time, it supports cargo storage and retrieval from four directions, greatly improving flexibility and being able to adapt to complex cargo scheduling needs.

[0027] At the same time, through the auxiliary limiting assembly set up, after the lifting plate lifts the cargo pallet, the engagement of the gear and the rack can simultaneously drive the auxiliary limiting plate to extend, limit the side of the cargo pallet, and further ensure the stability of cargo transportation. BRIEF DESCRIPTION OF THE DRAWINGS

[0028] Figure 1 This is a schematic diagram of the main structure of the present invention;

[0029] Figure 2 It is a top view schematic diagram of the present invention;

[0030] Figure 3 For the present invention Figure 1 A magnified schematic diagram of the structure at A in the middle;

[0031] Figure 4 For the present invention Figure 1 A magnified schematic diagram of the structure at B in the middle;

[0032] Figure 5 For the present invention Figure 1 A magnified schematic diagram of the structure at C in the middle;

[0033] Figure 6 It is a front view schematic diagram of the present invention;

[0034] Figure 7 For the present invention Figure 6 A magnified schematic diagram of the structure at D in the middle;

[0035] Figure 8 Schematic diagram of the structure of the fork-type layer-changing elevator in the present invention;

[0036] Figure 9 This is a structural diagram of the cargo platform of the elevator in the present invention;

[0037] Figure 10 A schematic diagram of the four-way vehicle body changing layers and passing the first guide slope in the present invention;

[0038] Figure 11 A schematic diagram of the four-way vehicle body changing layers and passing the second guide slope in the present invention;

[0039] Figure 12 This is a schematic structural diagram of the four-way vehicle body after layer change;

[0040] Figure 13 For the present invention Figure 10 A magnified schematic diagram of the structure at E in the middle;

[0041] Figure 14 It is a structural schematic diagram of the four-way vehicle assembly in the present invention;

[0042] Figure 15 It is a schematic diagram of the structure inside the four-way vehicle body of the present invention;

[0043] Figure 16 It is a partial structural diagram of the four-way vehicle assembly and the auxiliary limit assembly in the present invention;

[0044] Figure 17 It is a partial structural diagram of the auxiliary limiting component in the present invention;

[0045] Figure 18 This is a schematic diagram of the four-way vehicle body of the present invention when in operation;

[0046] Figure 19 This is a schematic diagram of the four-way vehicle body of the present invention when unloading goods;

[0047] Figure 20 Schematic diagram of the structure of the integrated guide rail body in the present invention;

[0048] Figure 21 It is a structural schematic diagram of the material storage guide plate in the present invention.

[0049] Legend: 1. Compact three-dimensional rack; 11. Shelf column; 12. Shelf mother rail; 13. Shelf sub-rail; 14. Loading rail; 15. Transfer rail; 16. Barcode bracket; 17. Lurking automatic guided vehicle; 18. Guide vehicle charging station; 19. Four-way vehicle charging station; 2. Fork-type layer-changing elevator; 21. Elevator base; 22. Elevator column; 23. Elevator loading platform; 24. Fork body; 25. Material width limit photoelectric detection; 26. Power support platform; 27. Winch elevator; 3. Four-way vehicle assembly; 31. Four-way vehicle body; 32. Four-way vehicle sub-rail roller; 33. Four-way vehicle mother rail roller; 34. Lifting plate; 35. Top detection Device; 36. Side detector; 37. Roller drive device; 38. Electric push rod; 39. First synchronous rack; 4. Auxiliary limit assembly; 41. Auxiliary limit plate; 42. Adjustment plate; 43. Second synchronous rack; 44. Transmission gear; 45. Synchronous gear; 46. Sliding block; 47. Connecting rod; 5. Integrated guide rail body; 51. Anti-external impact baffle; 52. First guide slope; 53. Second guide slope; 54. Integrated guide rail storage position; 55. Integrated guide rail sub-rail; 6. Material storage guide plate; 61. Material falling guide surface; 62. Material inlet guide surface; 63. Material outlet guide surface; 7. Cargo pallet; 71. Cargo body. DETAILED DESCRIPTION

[0050] The present invention will now be described in further detail with reference to the accompanying drawings and preferred embodiments.

[0051] Reference Figure 1-21As shown, the present invention provides a technical solution for a dense warehouse logistics warehousing system based on a fork-type layer-changing elevator: a dense warehouse logistics warehousing system based on a fork-type layer-changing elevator, comprising a dense three-dimensional shelf 1 and a cargo pallet 7, a cargo body 71 being placed on the cargo pallet 7, a fork-type layer-changing elevator 2 for conveying the cargo pallet 7 and the cargo body 71 being fixedly connected to one side of the dense three-dimensional shelf 1, the dense three-dimensional shelf 1 is provided with multiple layers, and each layer of the dense three-dimensional shelf 1 is provided with a four-way vehicle assembly 3 for transferring the cargo pallet 7 and the cargo body 71, and the side of the dense three-dimensional shelf 1 close to the fork-type layer-changing elevator 2 is also fixedly connected with an integrated guide rail for facilitating the transfer of the cargo pallet 7 and the cargo body 71. The main body 5 and the material storage guide plate 6, the dense three-dimensional shelf 1 includes a plurality of shelf columns 11, a shelf mother rail 12 and a shelf sub-rail 13, and the plurality of shelf mother rails 12 and shelf sub-rails 13 are fixed to the adjacent shelf columns 11, and the two adjacent shelf mother rails 12 and shelf sub-rails 13 are arranged perpendicular to each other, and the height of the shelf sub-rail 13 is slightly higher than the shelf mother rail 12. Each layer of the dense three-dimensional shelf 1 is provided with a plurality of vertically arranged mother lanes and sub-lanes, and the cross intersection of adjacent mother lanes and sub-lanes is fixedly connected with a conversion rail 15 for carrying the conversion of the shelf mother rail 12 and the shelf sub-rail 13. The upper oblique part of each shelf sub-rail 13 is fixedly connected with a cargo release rail 14 for supporting the cargo pallet 7 and the cargo body 71. Each conversion rail 15 are also fixedly connected with a barcode bracket 16, and the shelf sub-rail 13 and the barcode bracket 16 are respectively vertically pasted with a cargo position barcode and an anti-outward collision barcode. The bottom layer of the dense three-dimensional shelf 1 is provided with a plurality of latent automatic guided vehicles 17 for the in-and-out transfer of cargo pallets 7 and cargo bodies 71, as well as the storage and transportation of bottom materials. One side of the dense three-dimensional shelf 1 is also provided with a guide vehicle charging position 18 and a four-way vehicle charging position 19 for convenient charging of the latent automatic guided vehicle 17 and the four-way vehicle assembly 3. The fork-type layer-changing elevator 2 includes a elevator base 21, and the top of the elevator base 21 is fixedly connected to a elevator column 22, and a lift cargo platform 23 is slidably connected to the elevator column 22, and the lift cargo platform 23 is fixedly connected There is a fork body 24, and a plurality of material width limiting photoelectric detection devices 25 are fixedly connected to the elevator loading platform 23. The top of the elevator base 21 is also fixedly connected to a power support platform 26, and a winch hoist 27 is fixedly connected to the power support platform 26. The output end of the winch hoist 27 is connected to the elevator loading platform 23. Both ends of the integrated guide rail body 5 are fixedly connected to an anti-external impact baffle 51. The integrated guide rail body 5 is also provided with a first guide slope 52 and a second guide slope 53. The integrated guide rail body 5 is also provided with an integrated guide rail storage position 54 and an integrated guide rail sub-rail 55. The material storage guide plate 6 is provided obliquely above the integrated guide rail body 5, and a material falling guide surface 61 is provided on the material storage guide plate 6.The two ends of the material storage guide plate 6 are also fixedly connected with a material inlet guide surface 62 and a material outlet guide surface 63 for convenient entry and exit;

[0052] When in use, the latent automatic guided vehicle 17 loads the incoming materials and transports them to the material rack. The fork body 24 on the fork-type layer-changing elevator 2 extends to lift the materials and transport them to the height of the shelf docking position. The fork body 24 extends to store the cargo pallet 7 and the cargo body 71 at the shelf docking position. When the materials are at the bottom layer, the latent automatic guided vehicle 17 transports the materials to the bottom storage position of the intensive three-dimensional shelf 1. When the materials are at other levels, the four-way vehicle assembly 3 transfers them to the shelf storage position.

[0053] The interface structure is refined by the arrangement of the integrated guide rail body 5, the anti-outward impact baffle 51 and the material storage guide plate 6, ensuring the safe and reliable operation of the material loading and unloading and the layer-changing four-way vehicle assembly 3;

[0054] When leaving the warehouse, the four-way car assembly 3 transfers the materials to the shelf docking position, the four-way car assembly 3 exits the docking position, the fork-type layer-changing elevator 2 runs to the docking layer, and detects that there are no obstacles on the bottom layer of the materials through multiple material width-limiting photoelectric detections 25 on the elevator loading platform 23. The fork body 24 extends under the cargo pallet 7, and the fork-type layer-changing elevator 2 lifts the elevator loading platform 23 and retracts the fork body 24 to its original position. The elevator loading platform 23 drops to the bottom layer, the fork body 24 extends above the material rack, and then drops the elevator loading platform 23. The materials are stored on the material rack, and the fork body 24 is retracted to its original position. The materials stored on the material rack are transferred to the exit of another warehouse by the latent automatic guided vehicle 17 to complete the delivery;

[0055] At the same time, in conjunction with the fork-type layer-changing elevator 2, the layer change of the four-way vehicle assembly 3 can be realized. When changing layers, the four-way vehicle assembly 3 is first moved to the shelf docking position, the fork-type layer-changing elevator 2 is started to drive the elevator cargo platform 23 to move to the layer where the four-way vehicle assembly 3 is located, the fork body 24 is controlled to start lifting the four-way vehicle assembly 3, and the winch elevator 27 drives the elevator cargo platform 23 to move to another level to realize the layer change of the four-way vehicle assembly 3;

[0056] The fork-type layer-changing elevator 2 is precisely aligned with the shelf platform at the interface between the inside and outside of the warehouse in the vertical lifting direction, the four-way vehicle assembly 3 is precisely aligned with the interface platform inside the warehouse in and out, and the latent automatic guided vehicle 17 is precisely aligned with the shelf platform at the interface outside of the warehouse in and out. Because the fork-type layer-changing elevator 2 is fixedly installed and the shelf platform at the interface between the inside and outside of the warehouse in and out is also fixed, the fork-type layer-changing elevator 2 only needs to ensure the docking accuracy of the docking interface in the vertical lifting direction to achieve precise docking between the fork body 24 and the material, thereby achieving the goal of precise alignment between the warehouse in and out.

[0057] Reference Figure 1-21As shown, in this embodiment: the four-way vehicle assembly 3 includes a four-way vehicle body 31, and multiple groups of four-way vehicle rail rollers 32 and multiple groups of four-way vehicle mother rail rollers 33 are respectively provided on the four sides of the four-way vehicle body 31, and the multiple groups of four-way vehicle rail rollers 32 and the multiple groups of four-way vehicle mother rail rollers 33 are arranged perpendicular to each other, and the interior of the four-way vehicle body 31 is fixedly connected with a roller driving device 37 for driving the multiple groups of four-way vehicle rail rollers 32 and the four-way vehicle mother rail rollers 33 to move, and the top of the four-way vehicle body 31 is slidably connected with two groups of lifting plates 34 for lifting materials, and the four corners of the four-way vehicle body 31 are fixedly connected with electric push rods 38, and the output end of each electric push rod 38 is fixed to the adjacent lifting plate 34, and the four corners of the top of the four-way vehicle body 31 are fixedly connected with multiple upper detectors 35, and the four sides of the four-way vehicle body 31 are also fixedly connected with multiple side detectors 36;

[0058] When the fork-type layer-changing elevator 2 transports the cargo pallet 7 and the cargo body 71 to the cargo docking position, the four-way vehicle body 31 automatically moves to the bottom of the material by scanning the barcode sticker on the shelf sub-rail 13, and starts multiple electric push rods 38 to lift the cargo pallet 7 and the cargo body 71 through the lifting plate 34. When the cargo pallet 7 leaves the cargo rail 14, the roller drive device 37 in the four-way vehicle body 31 starts to drive the four-way vehicle sub-rail roller 32 or the four-way vehicle mother rail roller 33 to run, and starts to run to the target storage location. If the target storage location needs to change rails, the four-way vehicle body When the rail position is changed, the four-way vehicle mother rail roller 33 is extended and attached to the shelf mother rail 12. At this time, the four-way vehicle sub-rail roller 32 is separated from the shelf sub-rail 13, and the four-way vehicle body 31 is transferred along the mother lane shelf mother rail 12 to the target storage location sub-lane. At this time, the four-way vehicle mother rail roller 33 of the four-way vehicle body 31 is retracted to its original position, and the four-way vehicle rail roller 32 is attached to the shelf sub-rail 13. The four-way vehicle body 31 carries the material along the shelf sub-rail 13 and runs to the target storage location. The lifting plate 34 is lowered, and the material is stored on the delivery rail 14 of the target storage location, completing the storage of the main body 71 of the goods;

[0059] In terms of position accuracy control of the four-way vehicle body 31, multi-point code scanning calibration control technology, anti-outward impact code scanning control technology, and anti-collision and obstacle avoidance photoelectric control technology are adopted to effectively control the position accuracy and safety protection of the four-way vehicle body 31;

[0060] By strengthening the control of safe physical structures, the operation safety of the cargo body 71 and the four-way vehicle body 31 is guaranteed. Innovative safe and reliable material entry and exit guide structures are adopted at the interface warehouse, as well as the four-way vehicle body 31 layer-changing integrated guide rail body 5 and anti-external impact baffle 51 structure to ensure that the cargo body 71 can enter and exit safely and reliably, avoid the risks caused by material bending and tilting, improve the anti-external impact ability of the four-way vehicle body 31 layer-changing, and absolutely ensure that the four-way vehicle body 31 is safe and will not fall or get stuck.

[0061] Reference Figure 1-21 As shown, in this embodiment: each four-way vehicle body 31 is also provided with two sets of auxiliary limit assemblies 4, the auxiliary limit assembly 4 includes an auxiliary limit plate 41, the auxiliary limit plate 41 is slidably arranged on one side of the four-way vehicle body 31, and both sides of the auxiliary limit plate 41 are fixedly connected with a sliding block 46, and a sliding groove for sliding the sliding block 46 is provided on the inner wall of the four-way vehicle body 31, and the bottom of the auxiliary limit plate 41 is slidably connected to the adjustment plate 42, and a plurality of connecting rods 47 are hinged on the side wall of the adjustment plate 42, and the other end of each connecting rod 47 is connected to the auxiliary limit The inner wall of the plate 41 is hinged, and the end of the adjustment plate 42 away from the auxiliary limit plate 41 is also fixedly connected to the second synchronization rack 43, and the upper part of the second synchronization rack 43 is meshed with a transmission gear 44. A connecting rod is fixedly connected to the transmission gear 44, and both ends of the connecting rod are fixedly connected to a synchronization gear 45. The two synchronization gears 45 are both rotatably connected to the inner wall of the four-way vehicle body 31. The bottoms of the two lifting plates 34 are also fixedly connected to two groups of first synchronization racks 39, and each first synchronization rack 39 is meshed with the adjacent synchronization gear 45;

[0062] When the second synchronous rack 43 moves, it also pushes the adjacent adjusting plate 42 to move, and the adjusting plate 42 drives the auxiliary limiting plate 41 to move outward. When the sliding block 46 on the adjusting plate 42 moves to the end of the slide groove on the four-way vehicle body 31, the auxiliary limiting plate 41 is limited and cannot move further. At this time, the adjusting plate 42 continues to move, and the multiple connecting rods 47 push the auxiliary limiting plate 41 under the push of the adjusting plate 42, so that the sliding block 46 slides upward along the slide groove, so that the auxiliary limiting plate 41 moves up. After moving up, the auxiliary limiting plate 41 contacts the outer wall of the cargo pallet 7, and the cargo pallet 7 is auxiliary fixed by the auxiliary limiting plates 41 arranged on both sides.

[0063] When the cargo pallet 7 and the cargo body 71 are moved to the target storage location, the electric push rod 38 moves downward to drive the lifting plate 34 to move downward, and the first synchronous rack 39 on the lifting plate 34 drives the synchronous gear 45 to reverse, so that the synchronous gear 45 drives the transmission gear 44 to reverse, and the second synchronous rack 43 pulls the adjustment plate 42 toward the direction close to the inside of the four-way vehicle body 31. Multiple connecting rods 47 are reset at the same time under the action of the adjustment plate 42. When the connecting rod 47 moves downward and resets, it also pulls the auxiliary limit plate 41 downward and disengages from the cargo pallet 7. When the auxiliary limit plate 41 falls completely, it resets under the pull of the adjustment plate 42, completely releasing the limit on the cargo pallet 7.

[0064] In order to better understand the present invention, the specific implementation process is given below:

[0065] When entering the warehouse, the latent automatic guided vehicle 17 loads the incoming materials and transports them to the material rack. The fork body 24 on the fork-type layer-changing elevator 2 extends to lift the materials and transport them to the height of the shelf docking position. The fork body 24 extends to store the goods at the shelf docking position. When the materials are at the bottom layer, the materials are transported to the storage position of the bottom layer of the shelf by the latent automatic guided vehicle 17. When the materials are at other levels, the four-way vehicle body 31 scans the barcode sticker on the shelf sub-rail 13 and moves to the bottom of the material. A plurality of electric push rods 38 are started to lift the cargo pallet 7 and the cargo body 71 through the lifting plate 34. When the cargo pallet 7 leaves the cargo rail 14, the roller drive device 37 in the four-way vehicle body 31 starts to drive the four-way vehicle sub-rail roller 32 or the four-way vehicle mother rail roller 33 to run, and then starts to run to the target storage position.

[0066] If the target storage location needs to change tracks, the four-way vehicle body 31 runs to the conversion rail 15, extends the four-way vehicle mother rail roller 33 and fits onto the shelf mother rail 12. At this time, the four-way vehicle sub-rail roller 32 disengages from the shelf sub-rail 13, and the four-way vehicle body 31 is transferred along the mother lane shelf mother rail 12 to the sub-lane of the target storage location. The four-way vehicle mother rail roller 33 of the four-way vehicle body 31 retracts to its original position, and the four-way vehicle sub-rail roller 32 fits onto the shelf sub-rail 13. The four-way vehicle body 31 carries the material and runs along the shelf sub-rail 13 to the target storage location, lowers the lifting plate 34, and the material is stored on the cargo release rail 14 of the target storage location, completing the warehousing work of the cargo body 71.

[0067] When leaving the warehouse, the four-way vehicle body 31 transfers the cargo pallet 7 and the cargo body 71 to the shelf docking position, the four-way vehicle mother rail roller 33 exits the docking position, and the fork-type layer-changing elevator 2 runs to the docking layer. The multiple material width-limiting photoelectric detections 25 on the elevator loading platform 23 detect that there are no obstacles on the bottom layer of the material. The fork body 24 extends under the cargo pallet 7, and the fork-type layer-changing elevator 2 lifts the elevator loading platform 23 and retracts the fork body 24 to its original position. The elevator loading platform 23 is lowered to the bottom layer, the fork body 24 extends above the material rack, and then the elevator loading platform 23 is lowered. The material is stored on the material rack, and the fork body 24 is retracted to its original position. The material stored on the material rack is transferred to the exit of another warehouse by the latent automatic guided vehicle 17 to complete the delivery;

[0068] When the plurality of electric push rods 38 drive the lifting plate 34 to move upward, the first synchronous rack 39 at the bottom of the lifting plate 34 moves upward synchronously and drives the synchronous gear 45 to rotate. The synchronous gear 45 drives the transmission gear 44 to rotate through the connecting rod, so that the transmission gear 44 pushes the second synchronous rack 43 to move in the direction away from the roller driving device 37. When the second synchronous rack 43 moves, it also pushes the adjacent adjusting plate 42 to move, and the adjusting plate 42 drives the auxiliary limiting plate 41 to move outward. When the sliding block 46 on the adjusting plate 42 moves to the end of the slide groove on the four-way vehicle body 31, the auxiliary limiting plate 41 is limited and cannot move further. At this time, the adjusting plate 42 continues to move, and the plurality of connecting rods 47 push the auxiliary limiting plate 41 under the push of the adjusting plate 42, so that the sliding block 46 slides upward along the slide groove, so that the auxiliary limiting plate 41 moves upward. After moving upward, the auxiliary limiting plate 41 contacts the outer wall of the cargo pallet 7, and the cargo pallet 7 is auxiliary fixed by the auxiliary limiting plates 41 arranged on both sides;

[0069] When the cargo pallet 7 and the cargo body 71 are moved to the target storage location, the electric push rod 38 moves downward to drive the lifting plate 34 to move downward, and the first synchronous rack 39 on the lifting plate 34 drives the synchronous gear 45 to reverse, so that the synchronous gear 45 drives the transmission gear 44 to reverse, and the second synchronous rack 43 pulls the adjustment plate 42 to move toward the direction close to the inside of the four-way vehicle body 31. The multiple connecting rods 47 are reset at the same time under the action of the adjustment plate 42. When the connecting rods 47 move downward and reset, they also pull the auxiliary limiting plate 41 downward and disengage from the cargo pallet 7. When the auxiliary limiting plate 41 falls completely, it is reset under the pull of the adjusting plate 42, and the limit on the cargo pallet 7 is completely released;

[0070] At the same time, when in use, the four-way vehicle assembly 3 can be changed layers through the fork-type layer-changing elevator 2. When changing layers, the four-way vehicle body 31 is first moved to the shelf docking position, and the fork-type layer-changing elevator 2 is started to drive the elevator cargo platform 23 to move to the layer where the four-way vehicle body 31 is located. The fork body 24 is controlled to start lifting the four-way vehicle body 31, and the winch elevator 27 drives the elevator cargo platform 23 to move to other levels to realize the change of layers of the four-way vehicle body 31.

[0071] It should be noted that any modification, equivalent replacement, improvement, etc. within the spirit and principles of the present invention should also be within the scope of protection of the present invention.

Claims

1. A dense warehouse logistics storage system based on a fork-type layer-changing elevator, characterized by: The invention comprises a dense three-dimensional shelf (1) and a cargo pallet (7), wherein a cargo body (71) is placed on the cargo pallet (7), and a fork-type layer-changing elevator (2) for conveying the cargo pallet (7) and the cargo body (71) is fixedly connected to one side of the dense three-dimensional shelf (1). The dense three-dimensional shelf (1) is provided with multiple layers, and each layer of the dense three-dimensional shelf (1) is provided with a four-way vehicle assembly (3) for transferring the cargo pallet (7) and the cargo body (71); The side of the dense three-dimensional shelf (1) close to the fork-type layer-changing elevator (2) is also fixedly connected with an integrated guide rail body (5) and a material storage guide plate (6) for facilitating the transfer of the cargo pallet (7) and the cargo body (71); The four-way vehicle assembly (3) comprises a four-way vehicle body (31), wherein four sides of the four-way vehicle body (31) are respectively provided with a plurality of groups of four-way vehicle sub-rail rollers (32) and a plurality of groups of four-way vehicle mother rail rollers (33), and the plurality of groups of four-way vehicle sub-rail rollers (32) and the plurality of groups of four-way vehicle mother rail rollers (33) are arranged perpendicular to each other, and the interior of the four-way vehicle body (31) is fixedly connected with a roller driving device (37) for driving the plurality of groups of four-way vehicle sub-rail rollers (32) and the four-way vehicle mother rail rollers (33) to move, and the top of the four-way vehicle body (31) is slidably connected with two groups of lifting plates (34) for lifting materials, and the four corners of the interior of the four-way vehicle body (31) are fixedly connected with electric push rods (38), and the output end of each of the electric push rods (38) is fixed to the adjacent lifting plate (34); A plurality of upper detectors (35) are fixedly connected to the four corners of the top of the four-way vehicle body (31), and a plurality of side detectors (36) are fixedly connected to the four sides of the four-way vehicle body (31); Each of the four-way vehicle bodies (31) is also provided with two sets of auxiliary limit assemblies (4), the auxiliary limit assemblies (4) comprising auxiliary limit plates (41), the auxiliary limit plates (41) being slidably provided on one side of the four-way vehicle body (31), both sides of the auxiliary limit plates (41) being fixedly connected with sliding blocks (46), and a slide groove for the sliding blocks (46) to slide is provided on the inner wall of the four-way vehicle body (31); The bottom of the auxiliary limiting plate (41) is slidably connected to an adjusting plate (42), and a plurality of connecting rods (47) are hinged on the side wall of the adjusting plate (42), and the other end of each connecting rod (47) is hinged to the inner wall of the auxiliary limiting plate (41); The end of the adjustment plate (42) away from the auxiliary limit plate (41) is also fixedly connected to a second synchronous rack (43), and a transmission gear (44) is meshed and transmitted above the second synchronous rack (43). A connecting rod is fixedly connected to the transmission gear (44), and both ends of the connecting rod are fixedly connected to synchronous gears (45), and the two synchronous gears (45) are rotatably connected to the inner wall of the four-way vehicle body (31); The bottoms of the two lifting plates (34) are also fixedly connected with two sets of first synchronous racks (39), and each of the first synchronous racks (39) is meshed with an adjacent synchronous gear (45).

2. The dense warehouse logistics storage system based on a fork-type layer-changing elevator according to claim 1 is characterized by: The dense three-dimensional shelf (1) includes a plurality of shelf columns (11), shelf mother rails (12) and shelf sub-rails (13), wherein the plurality of shelf mother rails (12) and shelf sub-rails (13) are fixed to adjacent shelf columns (11), and two adjacent shelf mother rails (12) and shelf sub-rails (13) are arranged perpendicular to each other, and the height of the shelf sub-rails (13) is slightly higher than the shelf mother rails (12). Each layer of the dense three-dimensional shelf (1) is provided with a plurality of vertically arranged mother lanes and sub-lanes, and the cross intersections of adjacent mother lanes and sub-lanes are fixedly connected with conversion rails (15) for carrying the conversion of the shelf mother rails (12) and the shelf sub-rails (13), and each shelf sub-rail (13) is fixedly connected with a cargo release rail (14) for supporting a cargo pallet (7) and a cargo body (71) at an oblique upper portion thereof; Each of the conversion rails (15) is also fixedly connected to a barcode bracket (16), and the shelf sub-rails (13) and the barcode bracket (16) are respectively vertically pasted with a cargo location barcode and an anti-outward collision barcode.

3. The dense warehouse logistics storage system based on a fork-type layer-changing elevator according to claim 2 is characterized in that: The bottom layer of the dense three-dimensional shelf (1) is provided with a plurality of latent automatic guided vehicles (17) for the in-and-out transfer of cargo pallets (7) and cargo bodies (71), as well as the storage and transportation of materials on the bottom layer. One side of the dense three-dimensional shelf (1) is also provided with a guide vehicle charging position (18) and a four-way vehicle charging position (19) for conveniently charging the latent automatic guided vehicles (17) and the four-way vehicle assembly (3).

4. The dense warehouse logistics storage system based on a fork-type layer-changing elevator according to claim 1 is characterized in that: The fork-type layer-changing elevator (2) includes an elevator base (21), the top of the elevator base (21) is fixedly connected to an elevator column (22), the elevator column (22) is slidably connected to an elevator loading platform (23), the elevator loading platform (23) is fixedly connected to a fork body (24), and the elevator loading platform (23) is also fixedly connected to a plurality of material width-limiting photoelectric detectors (25); The top of the elevator base (21) is also fixedly connected to a power support platform (26), and a hoist (27) is fixedly connected to the power support platform (26), and the output end of the hoist (27) is connected to the elevator cargo platform (23).

5. The dense warehouse logistics storage system based on a fork-type layer-changing elevator according to claim 1 is characterized in that: Both ends of the integrated guide rail body (5) are fixedly connected with anti-external impact baffles (51); the integrated guide rail body (5) is also provided with a first guide slope (52) and a second guide slope (53); the integrated guide rail body (5) is also provided with an integrated guide rail cargo placement position (54) and an integrated guide rail sub-rail (55).

6. The dense warehouse logistics storage system based on a fork-type layer-changing elevator according to claim 1 is characterized in that: The material storage guide plate (6) is arranged obliquely above the integrated guide rail body (5), and a material falling guide surface (61) is provided on the material storage guide plate (6). Both ends of the material storage guide plate (6) are also fixedly connected with a material inlet guide surface (62) and a material outlet guide surface (63) for convenient entry and exit.

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