Lifting transfer trolley for storage

Abstract

The lifting transfer trolley comprises a frame mechanism, a walking mechanism, a stand column mechanism, a cargo carrying table, a roller table, a lifting driving mechanism and an electric control cabinet mechanism, a frame is of a frame type structure, a lower cross beam is of a variable cross-section design, the cross section of the position, connected with a stand column, of the lower cross beam is the widest, and the distortion resistance is enhanced by internally welding a partition plate; the two cross beams are connected through at least two profile steel supports, the overall rigidity is improved, the lifting driving mechanism is connected with a movable pulley block of the cargo carrying table through fixed pulleys arranged on the side face and the bottom of the upper cross beam to form a closed-loop transmission structure, the type selection of a lifting motor can be reduced, and the production cost is reduced; during operation, the device retracts to adapt to roadway end space limitation, and during maintenance, the device extends to provide an operation space. The problems that an existing ETV transfer trolley is complex in structure, high in cost and low in efficiency are effectively solved, and the ETV transfer trolley is suitable for high-density storage scenes such as aviation logistics and automatic stereoscopic warehouses.

Description

Technical Field

[0001] The present invention relates to the technical field of automated stereoscopic warehouse equipment, and particularly relates to a lifting transfer vehicle for warehousing. Background Art

[0002] With the rapid development of the logistics industry, the freight system, as the core pillar of the airport logistics ecosystem, has become increasingly prominent. The introduction of Elevating Transfer Vehicle (ETV) technology has brought disruptive innovation to air cargo warehousing and handling operations. Through intelligent scheduling, precise control, and high-dimensional loading, this technology effectively solves the problem of high-density storage space utilization and promotes the high-quality development of the air cargo logistics industry.

[0003] However, the existing ETV transfer vehicles have significant technical defects: their structural design is complex, and the overall specifications and weight are relatively large, resulting in high manufacturing and usage costs. At the same time, the transfer efficiency is slow and can no longer meet the requirements of high-speed development of logistics cargo handling. In view of the above deficiencies in the prior art, this application aims to provide a new type of lifting transfer vehicle with a compact structure and low production cost to solve the pain points of the prior art. Summary of the Invention

[0004] In view of this, the purpose of the present invention is to provide a lifting transfer vehicle for warehousing.

[0005] To achieve the above purpose, the technical solution adopted by the present invention is:

[0006] A lifting transfer vehicle for warehousing, comprising:

[0007] A frame mechanism, which includes a first lower cross beam and a second lower cross beam arranged in parallel. The first lower cross beam and the second lower cross beam are connected by a plurality of connecting members. Walking mechanisms are installed at both ends of the first lower cross beam and the second lower cross beam along their length directions.

[0008] A column mechanism, which includes a first column and a second column. The bottom end of the first column is installed on the first lower cross beam, the bottom end of the second column is installed on the second lower cross beam, and the top ends of the first column and the second column are connected by an upper cross beam. First guide rails and second guide rails are respectively installed on the first column and the second column along their length directions.

[0009] A loading platform, which is installed between the first column and the second column. The loading platform is used in cooperation with the first guide rail and the second guide rail through a vertical guide wheel set. A roller table and a cab are installed on the loading platform. A lifting drive mechanism, an electric control cabinet mechanism, and a top maintenance mechanism are installed on the first column.

[0010] Further, both the first lower cross beam and the second lower cross beam are of variable cross-section structures, and the connections thereof with the first column and the second column are the widest cross-sections.

[0011] Further, the traveling mechanism includes a traveling motor and a traveling wheel box which are installed on the first lower cross beam and the second lower cross beam and are drivingly connected, and traveling guide wheels which are installed at the bottoms of the first lower cross beam and the second lower cross beam, and the traveling guide wheels are in rolling fit with tracks arranged on the ground or steel structures.

[0012] Further, emergency dampers are installed at both ends of the first lower cross beam and the second lower cross beam.

[0013] Further, fixed pulley groups are installed on the sides at both ends of the upper cross beam along its length direction, and fixed pulleys are installed at the bottoms at both ends of the upper cross beam along its length direction; the steel wire rope of the lifting drive mechanism sequentially bypasses the fixed pulley groups and the movable pulley groups of the cargo platform, and then winds back to the steel wire rope fixing assembly on the upper cross beam to drive the cargo platform to lift and lower.

[0014] Further, the roller table includes a first frame, a second frame, conveying rollers, driving rollers and a conveying motor. The first frame and the second frame are both parallel to the first lower cross beam and the second lower cross beam. The conveying rollers are installed between the first frame and the second frame and are drivingly connected with the conveying motor. The driving rollers are located at both ends of the first frame and the second frame along their length directions, and the driving rollers are connected with a driving motor; the driving rollers and the conveying rollers are connected through a friction extraction device installed on the first frame.

[0015] Further, the electric control cabinet mechanism is telescopically installed on the side surface of the first column and includes a top platform, a bottom platform, a man-standing platform and an electric control cabinet body. The top platform and the bottom platform are respectively installed on the top and the bottom of the electric control cabinet body. The bottom platform and the man-standing platform are movably connected through guide wheels and guide blocks. The connecting column is connected with the first lower cross beam through a support member. A safety open loop and a limit dead stop are arranged on the bottom platform.

[0016] Further, the cab is of a fully enclosed frame structure, and anti-impact laminated glass, a sliding door and a lighting lamp are installed on the cab, and an electric control cabinet for controlling the operation of the transfer vehicle is arranged inside. [[ID=IC]]

[0017] Further, the top maintenance mechanism includes a maintenance platform and a guardrail installed at the top end of the first column, and anti-slip textures are arranged on the surface of the maintenance platform.

[0018] Furthermore, the first upright column and the second upright column are of box-section structures with reinforcing rib plates arranged inside, and the connecting member is of a steel section welding structure.

[0019] Compared with the prior art, the beneficial effects of the present invention are as follows: through the lower crossbeam with a variable cross-section structure, the cross-section is the widest at the connection with the upright column, and the anti-twisting ability of the vehicle frame is significantly improved by welding internal partitions. At the same time, the two crossbeams are connected by two or more connecting members, effectively enhancing the overall rigidity of the vehicle frame, making the structure of the vehicle frame more stable and reliable when carrying heavy loads. Fixed pulleys are arranged on the side and bottom of the upper crossbeam respectively, which are connected to the movable pulley block of the cargo platform to form an efficient pulley block system, which can reduce the selection requirements of the lifting motor, thereby reducing the production cost and improving the economy of the equipment. The electric control cabinet platform adopts a telescopic structure design. When the ETV is running, the platform retracts, ensuring the compactness of the whole vehicle structure and meeting the use requirements in the case of limited space at the end of the roadway; while when performing maintenance on the electric control cabinet, the platform can be pulled out, enabling maintenance personnel to stand safely in front of the electric control cabinet for operation, greatly improving the convenience and safety of maintenance. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] In order to more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the following will briefly introduce the drawings required for use in the description of the embodiments or the prior art. Obviously, the following drawings are only some embodiments of the present invention. For those of ordinary skill in the art, without creative efforts, other drawings can be obtained based on these drawings.

[0021] Attached Figure 1 is a schematic structural diagram of an embodiment of the present application;

[0022] Attached Figure 2 is a schematic structural diagram of the vehicle frame mechanism of an embodiment of the present application;

[0023] Attached Figure 3 is a schematic structural diagram of the roller table of an embodiment of the present application;

[0024] Attached Figure 4 is a schematic structural diagram of the cab of an embodiment of the present application;

[0025] Attached Figure 5 is a schematic structural diagram of the electric control cabinet mechanism of an embodiment of the present application;

[0026] Attached Figure 6 is a top view schematic diagram of an embodiment of the present application.

[0027] Explanation of the reference numerals and components involved in the drawings:

[0028] 1. Frame mechanism; 11. First lower cross beam; 12. Second lower cross beam; 13. Connecting piece; 14. Emergency damper; 2. Traveling mechanism; 21. Traveling motor; 22. Guide wheel; 23. Driving wheel box; 24. Driven wheel box; 3. Column mechanism; 31. First column; 32. Second column; 4. Loading platform; 41. Movable pulley block; 5. Roller table; 51. First frame; 52. Second frame; 53. Conveyor roller; 54. Driving roller; 55. Conveyor motor; 56. Friction extraction device; 6. Lifting drive mechanism; 7. Electric control cabinet; 71. Top platform; 72. Bottom platform; 73. Standing platform; 74. Electric control cabinet body; 75. Guide wheel; 76. Guide block; 77. Mechanical dead stop; 78. Support piece; 8. Top maintenance mechanism; 9. Cab; 91. Sliding door; 10. Upper cross beam; 101. Fixed pulley block; 102. Fixed pulley; 103. Wire rope fixing component. Detailed implementation manners

[0029] The technical solutions of the present invention will be clearly and completely described below through specific implementation manners. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present invention without creative efforts shall fall within the protection scope of the present invention.

[0030] See the appendix Figures 1-6As shown in the figure, a lifting transfer vehicle for warehousing of the present application aims to solve the problems of complex structure, high cost and low transfer efficiency of existing ETV transfer vehicles. It consists of a frame mechanism 1, a traveling mechanism 2, a column mechanism 3, a loading platform 4, a roller table 5, a lifting drive mechanism 6, an electric control cabinet mechanism 7, a top maintenance mechanism 8 and a cab 9. Each component realizes a compact layout and efficient collaborative operation through modular design. The frame mechanism 1 includes a first lower cross beam 11 and a second lower cross beam 12 arranged in parallel. The two are evenly distributed and connected by a connecting piece 13 welded by three steel profiles to form a high-strength frame structure. Through symmetric layout and rigid connection of the steel profile connecting pieces, the stress uniformity of the frame during loading can be ensured, and the overall structural stability can be improved. Both the first lower cross beam 11 and the second lower cross beam 12 adopt variable cross-section design. The cross-section width at the connection with the column mechanism 3 is the largest. By increasing the cross-section size in the stress concentration area, the local bending and shear strength can be enhanced, while the cross-section is reduced in non-critical areas to achieve strengthening as needed and avoid material waste. Transverse partitions are welded inside and fixed to the inner wall of the cross beam through continuous welds, which not only improves the anti-twisting ability but also reduces the overall weight. Preferably, emergency dampers 14 are installed at both ends of the first lower cross beam 11 and the second lower cross beam 12 along their lengths. When the transfer vehicle moves rapidly due to out-of-control or operational errors, the dampers reduce the impact speed through buffering to prevent the equipment from rushing out of the defined area; during the lifting or movement of the loading platform, if an abnormal collision occurs, the dampers can absorb the impact energy, reduce structural damage and ensure the safety of the equipment. The frame mechanism 1 of the present application is applicable to equipment such as industrial transfer vehicles and heavy-duty loading platforms. Especially in the fields of logistics warehousing, construction machinery, etc., its high-strength, lightweight and safety protection design can meet the needs of frequent transfer and heavy-duty operations, while reducing the risk of equipment failure. The traveling mechanism 2 is respectively installed at both ends of the first lower cross beam 11 and the second lower cross beam 12 along their lengths, including a traveling motor 21 and a traveling wheel box installed on the first lower cross beam 11 and the second lower cross beam 12 and drivingly connected, and traveling guide wheels 22 installed at the bottoms of the first lower cross beam 11 and the second lower cross beam 12. The two traveling wheel boxes at both ends of the first lower cross beam 11 are active wheel boxes 23, and the two traveling wheel boxes at both ends of the second lower cross beam 12 are driven wheel boxes 24. The guide wheels 22 are in rolling cooperation with the ground or a steel structure track to ensure traveling accuracy. The driving mode of the traveling mechanism 2 is: a single traveling motor 21 drives two active wheel boxes 23 through a transmission mechanism, or two traveling motors 21 respectively drive two active wheel boxes 23.

[0031] The column mechanism 3 includes a first column 31 and a second column 32, the bottoms of which are respectively fixed to the first lower cross beam 11 and the second lower cross beam 12, forming a stable support foundation. The tops of the two columns are connected by the upper cross beam 10 to form a complete gantry structure. This structure has the characteristics of high stiffness and strong anti-roll ability, and is suitable for scenarios with large vertical loads. The inner surfaces of the first column 31 and the second column 32 are respectively fixed with a first guide rail and a second guide rail by bolts or welding. Bolt connection is convenient for later maintenance and replacement, while welding provides higher connection strength. The appropriate method can be selected according to the usage scenario. The guide rails extend vertically along the length of the columns, providing a vertical movement guiding track for the lifting components. Their straightness and surface accuracy directly affect the running smoothness and positioning accuracy of the lifting system. The loading platform 4, as the core load-bearing component, is installed between the first column 31 and the second column 32. Vertical guide wheel groups are arranged on both sides, including horizontal guide wheels and vertical guide wheels, forming a four-point contact guiding structure. The horizontal guide wheels restrict the lateral displacement of the loading platform, and the vertical guide wheels limit its front-back offset, ensuring no shaking during the lifting process. The loading platform 4 is matched with the steel wire rope of the lifting drive mechanism 6 through a movable pulley group 41. The movable pulley group 41 is fixed to the loading platform 4 by a pulley bracket welded by steel plates.

[0032] Fixed pulley groups 101 are installed on the sides at both ends of the upper cross beam 10 along its length direction, and fixed pulleys 102 are installed at the bottoms at both ends of the upper cross beam 10 along its length direction. The lifting drive mechanism 6 is installed on the side of the first column 31 and includes a servo motor, a reducer, a drum and an encoder. The steel wire rope of the lifting drive mechanism 6 is wound around the drum, successively passes around the fixed pulley groups 101 at both ends of the upper cross beam 10, the movable pulley group 41 of the loading platform 4, and then winds back to the steel wire rope fixing component 103 at the bottom of the upper cross beam 10 to form a closed-loop drive. The fixed pulley groups 101 and the fixed pulleys 102 of the upper cross beam 10 are installed at the preset hole positions through bearing seats, and strengthening backing plates are arranged at the hole positions to bear the tension of the steel wire rope. The encoder monitors the position of the loading platform 4 in real time and cooperates with the servo motor to achieve closed-loop precise positioning. This arrangement of the pulley groups can reduce the motor selection and energy consumption.

[0033] The roller table 5 is installed on the loading platform 4 and consists of a first frame 51, a second frame 52, conveying rollers 53, driving rollers 54, a conveying motor 55 and a transmission mechanism. The first frame 51 and the second frame 52 are both parallel to the first lower cross beam 11 and the second lower cross beam 12 to form a support base. The conveying rollers 53 are installed between the first frame 51 and the second frame 52. The conveying motor 53 drives the rollers to rotate synchronously through a chain or belt transmission mechanism to achieve cargo transportation. Independent driving driving rollers 54 are arranged at both ends of the first frame 51 and the second frame 52 along their length directions, each driven by a driving motor. The driving rollers 54 are in contact transmission with the conveying rollers 53 through a friction extraction device 56. The friction extraction device 56 includes an elastic pressing wheel and a tensioning mechanism, and drives the goods on the shelf to move through friction to meet the docking requirements of shelves of different heights.

[0034] The electric control cabinet mechanism 7 adopts a pull-out telescopic structure and is installed on the side of the first column 31. It includes a top platform 71, a bottom platform 72, a man-standing platform 73 and an electric control cabinet body 74. The top platform 71 and the bottom platform 72 are respectively installed on the top and bottom of the electric control cabinet body 74. The bottom platform 72 and the man-standing platform 73 are connected by a sliding pair of a guide wheel 75 and a guide block 76, and the man-standing platform 73 can extend or retract along the guide structure. A safety locking device is equipped on the bottom platform 72, including a limit switch and a mechanical deadlock 77 linked with the vehicle frame mechanism 1. When the man-standing platform 73 extends, the limit switch is triggered to prohibit the transfer vehicle from moving to ensure maintenance safety. It is fixed to the vehicle frame through a support member 78 to ensure the stability of the platform. The top platform 71 covers the electric control cabinet body 74 to play a protective role.

[0035] The top maintenance mechanism 8 includes a maintenance platform and a guardrail installed at the top of the first column 31. The surface of the maintenance platform is provided with anti-slip texture.

[0036] The cab 9 is a fully enclosed frame structure and is installed on the loading platform 4. Impact-resistant laminated glass observation windows are provided on both sides, and a lighting lamp is installed on the side close to the pedestrian walkway. The cab 9 is equipped with a sliding door 91, and the opening direction is the same as that of the pedestrian passage, saving space and being convenient for operation. The indoor electric control equipment integrally controls the walking, lifting and cargo transportation actions of the transfer vehicle.

[0037] The lifting transfer vehicle of the present application has significant technical advantages and practical value: In terms of the frame design, the main body adopts the section steel welding process, with a simple and stable structure, which not only simplifies the manufacturing process but also ensures the basic load-bearing performance; the lower cross beam adopts a variable cross-section structure, which effectively reduces the weight of the whole vehicle on the premise of meeting the strength requirements, thereby reducing material consumption and reducing the manufacturing cost from the source. The upper cross beam also adopts section steel welding and strengthens the anti-twisting ability through internal welded partitions. While reducing the structural weight, it avoids the material waste caused by traditional strengthening structures, achieving a double improvement in lightweight and high reliability, and further saving production costs. Fixed pulleys are respectively arranged on the side and bottom of the upper cross beam, forming a labor-saving pulley system with the movable pulley group of the loading platform. By optimizing the force transmission path, the power required by the lifting motor is significantly reduced, the motor selection specification is lowered, and cost control is achieved from the core component level of the equipment, improving the economy. The telescopic structure design of the electric control cabinet platform fully considers the space adaptability of complex working conditions: when the ETV is running, the platform can be fully retracted to ensure the compact structure of the whole vehicle, and it can flexibly pass through space-limited scenarios such as the end of the roadway and narrow passages; when overhauling, the platform is pulled out to provide a stable standing space for maintenance personnel, facilitating direct operation facing the electrical cabinet, which not only improves the maintenance convenience but also expands the equipment usage scenarios through structural optimization, enhancing the universality of engineering applications.

[0038] The above description of the disclosed embodiments enables those skilled in the art to implement or use the present invention. Various modifications to these embodiments will be obvious to those skilled in the art, and the general principles defined herein can be implemented in other embodiments without departing from the spirit or scope of the present invention. Therefore, the present invention will not be limited to these embodiments shown herein, but rather to the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. A lifting transfer vehicle for warehousing, characterized in that, Comprising: A frame mechanism, which includes a first lower cross beam and a second lower cross beam arranged in parallel. The first lower cross beam and the second lower cross beam are connected by a number of connecting pieces. Walking mechanisms are installed at both ends of the first lower cross beam and the second lower cross beam along their length directions. A column mechanism, which includes a first column and a second column. The bottom end of the first column is installed on the first lower cross beam, and the bottom end of the second column is installed on the second lower cross beam. The top ends of the first column and the second column are connected by an upper cross beam. A first guide rail and a second guide rail are respectively installed on the first column and the second column along their length directions. A loading platform, which is installed between the first column and the second column. The loading platform is used in cooperation with the first guide rail and the second guide rail through a vertical guide wheel set. A roller table and a cab are installed on the loading platform. A lifting drive mechanism, an electric control cabinet mechanism and a top maintenance mechanism are installed on the first column.

2. The lifting transfer vehicle for warehousing according to claim 1, wherein Both the first lower cross beam and the second lower cross beam are of variable cross-section structures, and the connection parts of them with the first column and the second column are the widest cross-sections.

3. The lifting transfer vehicle for warehousing according to claim 1, characterized in that, The walking mechanism includes a walking motor and a walking wheel box which are installed on the first lower cross beam and the second lower cross beam and are drivingly connected, and walking guide wheels installed at the bottoms of the first lower cross beam and the second lower cross beam. The walking guide wheels are in rolling cooperation with the tracks on the ground or steel structures.

4. A lifting transfer vehicle for warehousing according to claim 1, characterized in that, Emergency dampers are installed at both ends of the first lower cross beam and the second lower cross beam.

5. The lifting transfer vehicle for warehousing according to claim 1, characterized in that, Fixed pulley groups are installed on the sides at both ends of the upper cross beam along its length direction, and fixed pulleys are installed at the bottoms at both ends of the upper cross beam along its length direction. The steel wire rope of the lifting drive mechanism sequentially bypasses the fixed pulley groups and the movable pulley group of the loading platform, and then winds back to the steel wire rope fixing assembly on the upper cross beam to drive the loading platform to lift and lower.

6. The lifting transfer vehicle for warehousing according to claim 1, wherein The roller table includes a first frame, a second frame, conveying roller cylinders, driving roller cylinders and a conveying motor. The first frame and the second frame are both parallel to the first lower cross beam and the second lower cross beam. The conveying roller cylinders are installed between the first frame and the second frame and are drivingly connected with the conveying motor. The driving roller cylinders are located at both ends of the first frame and the second frame along their length directions, and the driving roller cylinders are connected to a driving motor. The driving roller cylinders and the conveying roller cylinders are connected by a friction extraction device installed on the first frame.

7. The lifting transfer vehicle for warehousing according to claim 1, characterized in that, The electric control cabinet mechanism is telescopically installed on the side of the first column and includes a top platform, a bottom platform, a man-standing platform and an electric control cabinet body. The top platform and the bottom platform are respectively installed on the top and the bottom of the electric control cabinet body. The bottom platform and the man-standing platform are movably connected through guide wheels and guide blocks. The connecting column is connected to the first lower cross beam through a support member. A safety open loop and a limit dead stop are provided on the bottom platform.

8. The lifting transfer vehicle for warehousing according to claim 1, characterized in that, The cab is of a fully enclosed frame structure. Anti-impact laminated glass, a sliding door and a lighting lamp are installed on the cab, and an electric control cabinet for controlling the operation of the transfer vehicle is arranged inside it.

9. The lifting transfer vehicle for warehousing according to claim 1, characterized in that, The top maintenance mechanism includes a maintenance platform and a protective railing installed at the top of the first column, and anti-slip textures are provided on the surface of the maintenance platform.

10. The lifting transfer vehicle for warehousing according to claim 1, characterized in that, The first column and the second column are of box-section structure, and stiffening ribs are arranged inside, and the connecting member is of steel section welding structure.

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