A clamping drive device for rubber wheels

Abstract

The present invention discloses a clamping drive device for rubber wheels in the field of warehousing and logistics technology, comprising a shuttle car, a circular track, and a shelf. The rear end of the circular track is provided with a loading rail, the shuttle car is at the top end of the loading rail, and a plurality of unloading rails arranged along the circular track are provided on the inner side of the circular track. A first mounting plate is fixedly installed at the bottom end of the shuttle car, and a plurality of limiting plates are provided at the top end of the first mounting plate through a limiting mechanism. The limiting mechanism is used to drive the plurality of limiting plates to move and make way for the goods on the top end of the shuttle car when the shuttle car moves to the open end of the loading rail or the unloading rail. The bottom end of the first mounting plate is provided with four rubber wheels through a driving mechanism. The driving mechanism is used to clamp the rubber wheels to the track from both sides of the track and drive the shuttle car to move, thereby solving the problem that the existing shuttle car cannot make way for other cars when unloading and needs to control the moving speed during transportation.

Description

Technical Field

[0001] The present invention relates to the technical field of warehousing and logistics, and in particular to a clamping drive device for a rubber wheel. Background Art

[0002] With the development of the warehousing and logistics industry, shuttle racks and shuttle vehicles are widely used in various industries, such as high-rise warehouses and warehousing and logistics of boxed products, pharmaceuticals, bottled goods, tobacco, and daily necessities. Their convenience, speed, and accuracy have won the favor and recognition of enterprises. Traditional shuttle vehicles move on fixed tracks through magnetic linear motor devices or rubber wheel drive devices. When they move to the designated shelf, the unloading device on the top of the shuttle vehicle places the goods on the shelf.

[0003] In the existing technology, the magnetic push device or rubber wheel of the shuttle car is at the top of the track and can only move along a set of tracks. When a shuttle car moves to a designated shelf and places goods, the other shuttle cars on the same track will cause a blockage, thereby greatly reducing the efficiency of goods transportation. Secondly, the shuttle car needs to control the start and stop and moving speed during the transportation process to prevent the goods from sliding from the top of the shuttle car under the action of inertia, which brings inconvenience to the transportation of the shuttle car. The existing shuttle car cannot give way to other cars when unloading and needs to control the moving speed during transportation.

[0004] Based on this, the present invention designs a clamping drive device for a rubber wheel to solve the above problems. Summary of the Invention

[0005] The purpose of the present invention is to provide a clamping drive device for the shuttle car rubber wheel with the function of giving way to other cars when unloading and without the need to control the moving speed during transportation, so as to solve the problems raised in the above background technology.

[0006] To achieve the above-mentioned purpose, the present invention provides the following technical solutions: a clamping drive device for rubber wheels, comprising a shuttle car, a circular track, and a shelf, wherein a loading rail is provided at the rear end of the circular track, the shuttle car is at the top end of the loading rail, and a plurality of unloading rails arranged along the circular track are provided on the inner side of the circular track, a first mounting plate is fixedly mounted on the bottom end of the shuttle car, a plurality of limiting plates are provided on the top end of the first mounting plate through a limiting mechanism, the limiting mechanism is used to drive the plurality of limiting plates to move and make way for the goods on the top end of the shuttle car when the shuttle car moves to the open end of the loading rail or the unloading rail, the bottom end of the first mounting plate is provided with four rubber wheels through a driving mechanism, and the driving mechanism is used to clamp the rubber wheels to the track from both sides of the track and drive the shuttle car to move;

[0007] As a further solution of the present invention, the limit mechanism includes an eight-shaped rail to which the open ends of the loading rail and the unloading rail are fixedly installed, and a plurality of limit slots are opened at the edge of the first mounting plate, and the bottom ends of the limit plates are fixedly installed with a first limit rod and a second limit rod, and the second limit rod is located at the bottom of one end of the limit plate close to the shuttle car, and the bottom ends of the first limit rod and the second limit rod pass through the limit slot and are slidably connected thereto, and a plurality of fixed blocks are fixedly installed at the bottom end of the first mounting plate, and the side walls of the fixed blocks are fixedly installed with elastic bands, and the other ends of the elastic bands are connected to the adjacent second limit rods, and a transmission mechanism is provided at the bottom end of the first mounting plate, and the transmission mechanism is used to drive the second limit rod away from the fixed block when the shuttle car moves to the top end of the eight-shaped rail;

[0008] As a further solution of the present invention, four guide plates are fixedly mounted on the top of the first mounting plate, and the guide plates block the gap between two adjacent limit plates;

[0009] As a further solution of the present invention, the transmission mechanism includes a take-up drum rotatably connected to the bottom end of the first mounting plate, four connecting rings are fixedly installed on the bottom end of the first mounting plate, and the side walls of the second limit rod are fixedly installed with pull ropes, and the other ends of the pull ropes pass through the connecting rings and are fixedly connected to the side walls of the take-up drum. When the shuttle moves to the top end of the figure-eight rail, the driving mechanism drives the take-up drum to rotate;

[0010] As a further solution of the present invention, the grooves on the surfaces of the circular track, loading rail, unloading rail and splayed rail are all adapted to the rubber wheels, and the ends of the loading rail and unloading rail away from the splayed rail are connected to the circular track through a track changing device;

[0011] As a further solution of the present invention, the driving mechanism includes a second mounting plate fixedly mounted on the bottom end of the first mounting plate, the bottom end of the second mounting plate is provided with four slide grooves, the inner sides of the slide grooves are slidably connected to sliders through tension springs, the bottom ends of the sliders are rotatably connected to rotating rods, the rubber wheel is fixedly mounted on the bottom end of the rotating rod, two motors are fixedly mounted on the bottom end of the second mounting plate, the output end of the motor and the two rotating rods on the same side are connected by a transmission belt, the transmission belt is connected to the second mounting plate through a tensioning mechanism, the tensioning mechanism is used to keep the transmission belt in a taut state at all times, and the bottom end of the rotating rod is provided with a clamping mechanism, and the clamping mechanism is used to keep the rubber wheel and the track in a tightly fitted state at all times;

[0012] As a further solution of the present invention, the tensioning mechanism includes four guide rings fixedly mounted on the bottom end of the second mounting plate, the middle ends of the guide rings are slidably connected to guide rods, and the ends of the guide rods close to the transmission belt are fixedly mounted with an L-shaped plate, the vertical ends of the L-shaped plates are connected to the guide rings through compression springs, the bottom ends of the horizontal ends of the L-shaped plates are rotatably connected to rotating rollers, and the rotating rollers are tightly fitted with adjacent transmission belts, the bottom end of the take-up drum is fixedly mounted with a transmission rod, the bottom end of the transmission rod passes through the second mounting plate and is rotatably connected thereto, and a transmission ring is fixedly mounted on the outer side of the bottom end of the transmission rod, and the left ends of the two L-shaped plates on the right side are fixedly mounted with a Z-shaped rod, the rear end of the Z-shaped rod on the front side corresponds to the front end of the transmission ring, and the front end of the Z-shaped rod on the rear side is tightly fitted with the rear end of the transmission ring and frictionally transmits transmission to each other;

[0013] As a further solution of the present invention, the clamping mechanism includes a rotating rod with a mounting block rotatably connected to the outer side thereof, the mounting block is fixedly mounted with a mounting rod at one end close to the track, the outer side of the mounting rod is slidably connected to a mounting ring via a tension spring, the bottom end of the mounting ring is rotatably connected to a clamping roller, and the clamping rollers are tightly fitted to the track.

[0014] Compared with the prior art, the present invention has the following beneficial effects:

[0015] 1. The present invention provides a discharge rail. When a shuttle car moves to a designated position on a shelf, the shuttle car will move from the top of the circular rail to the discharge rail corresponding to the designated position on the shelf. At this time, the other shuttle cars can still move smoothly on the circular rail without having to wait for the shuttle car in front to complete unloading. This avoids the shuttle car from causing a blockage on the rail, improves the efficiency of transporting goods by the shuttle car, and solves the problem that the existing shuttle car cannot give way to other cars when unloading.

[0016] 2. The present invention provides a limit mechanism. When the shuttle moves from the top of the figure-eight rail to the top of the loading rail, the limit mechanism drives the limit plate to move so that the limit plate is parallel to the edge of the adjacent first mounting plate and blocks the goods on the top of the shuttle, thereby preventing the goods from sliding down due to inertia when the shuttle starts, stops or moves, so that the shuttle does not need to limit the speed of starting, stopping and moving. At this time, the transportation efficiency of the goods can be improved by increasing the moving speed of the shuttle, which solves the problem that the existing shuttle needs to control the moving speed during transportation.

[0017] 3. The present invention drives the shuttle car to move by setting up several horizontal rubber wheels. The driving method has a simple structure, the motor speed control is more accurate and stable, the transmission belt is directly and reliably transmitted to the rubber wheel from the motor output end, and the transmission belt, bearings and other loss parts are standard parts on the market, and daily maintenance is simpler and more convenient; in terms of energy saving, when driving a shuttle car of the same weight, compared with the industry's magnetic linear motor with a power of 5.5KW or other higher power drive motors, the motor of the rubber wheel clamping drive device adopts two horizontally symmetrical 0.75KW servo motors to simultaneously drive the rotation of the rubber wheels on both sides. The total power of a single set is 3KW, and it can actually accommodate a larger load than the magnetic linear motor. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 It is a schematic diagram of the overall structure of the present invention;

[0019] Figure 2 This is a schematic diagram of the structure of the present invention from an upward viewing angle;

[0020] Figure 3 This is a schematic diagram of the cross-sectional structure of the present invention from a front perspective;

[0021] Figure 4 This is a schematic diagram of the local structure of the present invention from a top view;

[0022] Figure 5 This is a schematic diagram of the connection structure between the rubber wheel and the figure-eight rail in the present invention;

[0023] Figure 6 This is a schematic diagram of the connection structure between the rubber wheel and the clamping roller in the present invention;

[0024] Figure 7 This is a schematic diagram of the cross-sectional structure of the present invention from an upward perspective;

[0025] Figure 8 Schematic diagram of the connection structure between the take-up reel and the pull rope in the present invention;

[0026] Figure 9 For the present invention Figure 8 Enlarged structural diagram at point A in the middle.

[0027] In the accompanying drawings, the components represented by the reference numerals are as follows:

[0028] 1. Shuttle; 2. Loop track; 3. Shelf; 4. Loading rail; 5. Unloading rail; 6. First mounting plate; 7. Limit plate; 8. Rubber wheel; 9. Figure-eight rail; 10. Limit slot; 11. First limit rod; 12. Second limit rod; 13. Fixed block; 14. Elastic belt; 15. Guide plate; 16. Take-up reel; 17. Connecting ring; 18. Pull rope; 19. Second mounting plate; 20. Slide; 21. Slider; 22. Rotating rod; 23. Motor; 24. Transmission belt; 25. Guide ring; 26. Guide rod; 27. L-shaped plate; 28. Rotating roller; 29. ​​Transmission rod; 30. Transmission ring; 31. Z-shaped rod; 32. Mounting block; 33. Mounting rod; 34. Mounting ring; 35. Clamping roller. DETAILED DESCRIPTION

[0029] See also Figures 1-9 The present invention provides a technical solution: a clamping drive device for rubber wheels, comprising a shuttle 1, a circular track 2, and a shelf 3. A loading rail 4 is provided at the rear end of the circular track 2. The shuttle 1 is at the top of the loading rail 4. A plurality of unloading rails 5 arranged along the circular track 2 are provided on the inner side of the circular track 2. A first mounting plate 6 is fixedly mounted on the bottom end of the shuttle 1. A plurality of limiting plates 7 are provided on the top end of the first mounting plate 6 through a limiting mechanism. The limiting mechanism is used to drive the plurality of limiting plates 7 to move and make way for the goods on the top end of the shuttle 1 when the shuttle 1 moves to the open end of the loading rail 4 or the unloading rail 5. The bottom end of the first mounting plate 6 is provided with four rubber wheels 8 through a driving mechanism. The driving mechanism is used to clamp the rubber wheels 8 to the track from both sides of the track and drive the shuttle 1 to move.

[0030] The limiting mechanism includes an eight-shaped rail 9 to which the open ends of the loading rail 4 and the unloading rail 5 are fixedly installed, a plurality of limiting grooves 10 are opened at the edge of the first mounting plate 6, and a first limiting rod 11 and a second limiting rod 12 are fixedly installed at the bottom end of the limiting plate 7. The second limiting rod 12 is at the bottom of the end of the limiting plate 7 close to the shuttle 1, and the bottom ends of the first limiting rod 11 and the second limiting rod 12 pass through the limiting groove 10 and are slidably connected thereto. A plurality of fixed blocks 13 are fixedly installed at the bottom end of the first mounting plate 6, and the side walls of the fixed blocks 13 are fixedly installed with elastic bands 14, and the other ends of the elastic bands 14 are connected to the adjacent second limiting rods 12. A transmission mechanism is provided at the bottom end of the first mounting plate 6, which is used to drive the second limiting rod 12 away from the fixed block 13 when the shuttle 1 moves to the top end of the eight-shaped rail 9;

[0031] During operation, the cargo is first placed on the top of the shuttle 1, and then the driving mechanism is started to drive the shuttle 1 to cross the figure-eight rail 9, the loading rail 4 and move to the top of the circular track 2. When the shuttle 1 moves from the top of the figure-eight rail 9 to the top of the upper material rail 4, the rubber wheels 8 on the left and right sides of the rear end gradually approach each other. At this time, the transmission mechanism no longer pulls the second limit rod 12, so that the second limit rod 12 moves toward the fixed block 13 under the pull of the elastic band 14. The second limit rod 12 moves through the limit plate 7 to drive the first limit rod 11 in the limit slot 10. The second limiting rod 12 slides sideways until it moves to the end of the limiting groove 10. At this time, the limiting plate 7 is parallel to the edge adjacent to the first mounting plate 6 and blocks the goods on the top of the shuttle 1, thereby preventing the goods from sliding down under the action of inertia when the shuttle 1 starts, stops or moves, so that the shuttle 1 does not need to limit the speed when starting, stopping and moving. At this time, the transportation efficiency of the goods can be improved by increasing the moving speed of the shuttle 1, which brings convenience to the transportation of the goods and solves the problem that the existing shuttle 1 needs to control the moving speed during transportation.

[0032] When the shuttle car 1 moves to the designated position of the shelf 3, the shuttle car 1 moves from the top of the circular track 2 to the top of the unloading rail 5 and the eight-shaped rail 9 corresponding to the designated position of the shelf 3. At this time, the shuttle car 1 is no longer in the circular track 2, so that the other shuttle cars 1 can move smoothly on the circular track 2 without waiting for the shuttle car 1 in front to complete unloading, thereby avoiding the shuttle cars 1 from causing blockage on the track. By setting the unloading rail 5, the shuttle cars 1 no longer affect each other, thereby increasing the number of shuttle cars 1 on the same set of tracks, further improving the transportation efficiency of goods, and solving the problem that the existing shuttle car 1 cannot give way to other cars when unloading;

[0033] When the shuttle 1 moves from the unloading rail 5 to the figure-eight rail 9, the rubber wheels 8 on both sides of the shuttle 1 move away from each other, and the rubber wheels 8 move away from each other and drive the second limit rod 12 away from the fixed block 13 through the transmission mechanism. The second limit rod 12 moves through the limit plate 7 to drive the first limit rod 11 to move. The first limit rod 11 drives the limit plate 7 to gradually tilt under the guidance of the limit groove 10 until the first limit rod 11 moves to the end of the limit groove 10. At this time, the limit plates 7 approach each other and make way for the goods at the top of the shuttle 1, so that the shuttle 1 can move the goods at the top horizontally to the shelf 3, so that the device does not cause obstacles to the placement of goods, thereby increasing the practicality of the device;

[0034] When the cargo unloading is completed, the shuttle car 1 only needs to retreat along the unloading rail 5 to the circular track 2, and then continue to move forward along the circular track 2. The shuttle car 1 moves one circle along the circular track 2 and returns to the loading rail 4 to carry out the next round of loading and conveying operations.

[0035] As a further solution of the present invention, four guide plates 15 are fixedly mounted on the top of the first mounting plate 6, and the guide plates 15 block the gap between two adjacent limit plates 7;

[0036] During operation, when the shuttle 1 moves the goods at the top horizontally to the shelf 3, the goods are guided by the guide plate 15 during the horizontal movement and pass over the limit plate 7, thereby preventing the goods from being blocked by the edge of the limit plate 7 and staying at the top of the shuttle 1, avoiding the limit plate 7 from hindering the unloading work of the shuttle 1.

[0037] As a further solution of the present invention, the transmission mechanism includes a take-up drum 16 rotatably connected to the bottom end of the first mounting plate 6, four connecting rings 17 are fixedly installed on the bottom end of the first mounting plate 6, and the side walls of the second limiting rod 12 are fixedly installed with pull ropes 18. The other ends of the pull ropes 18 pass through the connecting rings 17 and are fixedly connected to the side walls of the take-up drum 16. When the shuttle 1 moves to the top of the figure-eight rail 9, the driving mechanism drives the take-up drum 16 to rotate;

[0038] During operation, when the rubber wheels 8 on the left and right sides of the rear end gradually approach each other, the driving mechanism drives the take-up drum 16 to rotate, and the rotation of the take-up drum 16 gradually loosens the pull rope 18 wrapped around the outside of the take-up drum 16. At this time, the elastic belt 14 can pull the second limit rod 12 to move, so that when the shuttle 1 is removed from the top of the figure-eight rail 9, the second limit rod 12 drives the limit plate 7 to move and limit the goods, so that the limiting operation and the limit release operation of the goods are automatically completed, which brings convenience to the use of the device.

[0039] As a further solution of the present invention, the grooves on the surfaces of the return track 2, the loading rail 4, the unloading rail 5 and the splayed rail 9 are all adapted to the rubber wheel 8, and the ends of the loading rail 4 and the unloading rail 5 away from the splayed rail 9 are connected to the return track 2 through a track changing device;

[0040] During operation, the rubber wheel 8 rotates and moves in the grooves of the return track 2, the loading rail 4, the unloading rail 5 and the eight-shaped rail 9. The grooves limit the rubber wheel 8, making the movement of the shuttle 1 more stable; when the shuttle 1 moves from the loading rail 4 to the return track 2, the track changing device disconnects the loading rail 4 from the return track 2 and connects the return track 2 to form a closed track. When the shuttle 1 moves forward along the return track 2, the shuttle 1 can smoothly cross the loading rail 4. The track changing device is an existing mature technology and will not be elaborated on here. The track changing operation between the return track 2 and the unloading rail 5 is the same as above.

[0041] As a further solution of the present invention, the driving mechanism includes a second mounting plate 19 fixedly mounted at the bottom end of the first mounting plate 6, four slide grooves 20 are opened at the bottom end of the second mounting plate 19, the inner sides of the slide grooves 20 are slidably connected with sliders 21 through tension springs, the bottom ends of the sliders 21 are rotatably connected with rotating rods 22, the rubber wheel 8 is fixedly mounted on the bottom end of the rotating rod 22, two motors 23 are fixedly mounted at the bottom end of the second mounting plate 19, the output end of the motor 23 and the two rotating rods 22 on the same side are connected by a transmission belt 24, the transmission belt 24 is connected to the second mounting plate 19 through a tensioning mechanism, the tensioning mechanism is used to keep the transmission belt 24 in a taut state at all times, and a clamping mechanism is provided at the bottom end of the rotating rod 22, which is used to keep the rubber wheel 8 and the track in a tight fit at all times;

[0042] When working, the motor 23 starts to drive the rotating rod 22 to rotate through the transmission belt 24, and the rotation of the rotating rod 22 drives the rubber wheel 8 on the same side to rotate synchronously. At this time, the clamping mechanism ensures that the rubber wheel 8 is always in close contact with the track, avoiding the rubber wheel 8 from derailing; when the rubber wheels 8 on the left and right sides of the rear end gradually approach each other, the two rubber wheels 8 at the rear end drive the two sliders 21 at the rear end to approach each other through the rotating rod 22. The elastic force of the tension spring connected between the slider 21 and the inner wall of the slide groove 20 is relatively small, which only plays the role of centering the shuttle 1 and does not pull the rubber wheel 8 to fit too tightly with the track, thereby not accelerating the wear of the rubber wheel 8; when the rotating rod 22 moves horizontally following the rubber wheel 8, the tensioning mechanism always tightens the transmission belt 24, thereby facilitating the transmission of kinetic energy at the output end of the motor 23;

[0043] By setting up several horizontal rubber wheels 8 to drive the shuttle 1 to move, the driving method has a simple structure, the speed control of the motor 23 is more accurate and stable, the transmission belt 24 is directly and reliably transmitted to the rubber wheel 8 from the output end of the motor 23, and the transmission belt 24, bearings and other loss parts are standard parts on the market, and daily maintenance is simpler and more convenient; in terms of energy saving, when driving the shuttle 1 of the same weight, compared with the 5.5KW power of the magnetic linear motor or other higher power drive motors in the industry, the motor 23 of the rubber wheel 8 clamping drive device adopts two horizontally symmetrical 0.75KW servo motors to simultaneously drive the rubber wheels 8 on both sides to rotate, and the total power of a single set is 3KW, and it can actually accommodate a larger load than the magnetic linear motor.

[0044] As a further solution of the present invention, the tensioning mechanism includes four guide rings 25 fixedly mounted at the bottom end of the second mounting plate 19, the middle part of the guide ring 25 is slidably connected to a guide rod 26, and the end of the guide rod 26 close to the transmission belt 24 is fixedly mounted with an L-shaped plate 27, the vertical end of the L-shaped plate 27 is connected to the guide ring 25 by a compression spring, and the bottom end of the horizontal end of the L-shaped plate 27 is rotatably connected to a rotating roller 28, and the rotating roller 28 is tightly fitted with the adjacent transmission belt 24. The bottom end of the take-up drum 16 is fixedly mounted with a transmission rod 29, the bottom end of the transmission rod 29 passes through the second mounting plate 19 and is rotatably connected thereto, and a transmission ring 30 is fixedly mounted on the outer side of the bottom end of the transmission rod 29, and the left ends of the two L-shaped plates 27 on the right are fixedly mounted with a Z-shaped rod 31, the rear end of the front Z-shaped rod 31 corresponds to the front end of the transmission ring 30, and the front end of the rear Z-shaped rod 31 is tightly fitted with the rear end of the transmission ring 30 and frictionally transmits the transmission to each other;

[0045] During operation, when the two rear rotating rods 22 approach each other, the two rear L-shaped plates 27 move away from each other under the push of the compression spring. At this time, the guide rod 26 is limited by the guide ring 25, so that the L-shaped plate 27 keeps moving in the horizontal direction. The movement of the L-shaped plate 27 drives the two rear rotating rollers 28 to move away from each other. The two rotating rollers 28 move away from each other to tighten the loose transmission belt 24, ensuring that the transmission of the transmission belt 24 is not affected by the movement of the rubber wheel 8.

[0046] The two L-shaped plates 27 on the rear side move away from each other, driving the rear Z-shaped rod 31 to move to the right. The rear Z-shaped rod 31 moves to the right and drives the transmission rod 29 to rotate through the transmission ring 30. The rotation of the transmission rod 29 drives the take-up drum 16 to rotate, thereby realizing that when the rubber wheels 8 on the left and right sides of the rear end gradually approach each other, the drive mechanism drives the take-up drum 16 to rotate.

[0047] As a further embodiment of the present invention, the clamping mechanism includes a mounting block 32 rotatably connected to the outer side of the rotating rod 22, a mounting rod 33 fixedly mounted on one end of the mounting block 32 close to the rail, a mounting ring 34 slidably connected to the outer side of the mounting rod 33 via a tension spring, and a clamping roller 35 rotatably connected to the bottom end of the mounting ring 34, which is tightly fitted to the rail.

[0048] During operation, the tension spring continuously pulls the mounting ring 34 and the mounting block 32 closer to each other, so that the rubber wheel 8 and the clamping roller 35 are always in close contact with the track. When the rubber wheel 8 is worn, the tension spring can still ensure that the rubber wheel 8 is in close contact with the track, thereby avoiding the shuttle 1 from derailing due to the wear of the rubber wheel 8; when the rubber wheel 8 moves to the figure-eight track 9, the rubber wheel 8 will not increase the wear between the rubber wheel 8 and the track due to the increase in the distance between the two rails.

Claims

1. A clamping drive device for a rubber wheel, comprising a shuttle (1), a return track (2), and a shelf (3), characterized in that: The rear end of the circular track (2) is provided with a loading rail (4), the shuttle car (1) is at the top end of the loading rail (4), the inner side of the circular track (2) is provided with a plurality of unloading rails (5) arranged along the circular track (2), the bottom end of the shuttle car (1) is fixedly installed with a first mounting plate (6), the top end of the first mounting plate (6) is provided with a plurality of limiting plates (7) through a limiting mechanism, the limiting mechanism is used to drive the plurality of limiting plates (7) to move and make way for the goods on the top end of the shuttle car (1) when the shuttle car (1) moves to the open end of the loading rail (4) or the unloading rail (5), the bottom end of the first mounting plate (6) is provided with four rubber wheels (8) through a driving mechanism, the driving mechanism is used to clamp the rubber wheels (8) to the track from both sides of the track and drive the shuttle car (1) to move; The limiting mechanism comprises an eight-shaped rail (9) fixedly mounted at the open ends of the loading rail (4) and the unloading rail (5); a plurality of limiting grooves (10) are provided at the edge of the first mounting plate (6); a first limiting rod (11) and a second limiting rod (12) are fixedly mounted at the bottom end of the limiting plate (7); the second limiting rod (12) is located at the bottom end of the limiting plate (7) close to the shuttle car (1); the bottom ends of the first limiting rod (11) and the second limiting rod (12) pass through the limiting groove ( 10) and is slidably connected thereto, a plurality of fixed blocks (13) are fixedly mounted on the bottom end of the first mounting plate (6), and elastic bands (14) are fixedly mounted on the side walls of the fixed blocks (13), and the other ends of the elastic bands (14) are connected to adjacent second limiting rods (12), and a transmission mechanism is provided at the bottom end of the first mounting plate (6), and the transmission mechanism is used to drive the second limiting rod (12) away from the fixed block (13) when the shuttle car (1) moves to the top end of the figure eight rail (9); The transmission mechanism includes a take-up drum (16) rotatably connected to the bottom end of the first mounting plate (6), four connecting rings (17) are fixedly installed on the bottom end of the first mounting plate (6), and the side walls of the second limit rod (12) are fixedly installed with pull ropes (18), and the other ends of the pull ropes (18) pass through the connecting rings (17) and are fixedly connected to the side walls of the take-up drum (16). When the shuttle (1) moves to the top end of the figure-eight rail (9), the driving mechanism drives the take-up drum (16) to rotate; The driving mechanism includes a second mounting plate (19) fixedly mounted at the bottom end of the first mounting plate (6), four slide grooves (20) are provided at the bottom end of the second mounting plate (19), the inner sides of the slide grooves (20) are slidably connected to sliders (21) through tension springs, the bottom ends of the sliders (21) are rotatably connected to rotating rods (22), the rubber wheel (8) is fixedly mounted at the bottom end of the rotating rod (22), two motors (23) are fixedly mounted at the bottom end of the second mounting plate (19), the output end of the motor (23) and the two rotating rods (22) on the same side are connected by a transmission belt (24), the transmission belt (24) is connected to the second mounting plate (19) through a tensioning mechanism, the tensioning mechanism is used to keep the transmission belt (24) in a taut state at all times, the bottom end of the rotating rod (22) is provided with a clamping mechanism, the clamping mechanism is used to keep the rubber wheel (8) and the track in a tightly fitted state at all times; The tensioning mechanism includes four guide rings (25) fixedly mounted at the bottom end of the second mounting plate (19), the middle portion of each guide ring (25) is slidably connected to a guide rod (26), an end of each guide rod (26) close to the transmission belt (24) is fixedly mounted with an L-shaped plate (27), the vertical end of each L-shaped plate (27) is connected to the guide ring (25) via a compression spring, the bottom end of each horizontal end of each L-shaped plate (27) is rotatably connected to a rotating roller (28), and the rotating roller (28) is tightly fitted with the adjacent transmission belt (24). A transmission rod (29) is fixedly mounted on the bottom end of the take-up reel (16), the bottom end of the transmission rod (29) passes through the second mounting plate (19) and is rotatably connected thereto, and a transmission ring (30) is fixedly mounted on the outer side of the bottom end of the transmission rod (29), and the left ends of the two right L-shaped plates (27) are both fixedly mounted with Z-shaped rods (31), the rear end of the front Z-shaped rod (31) corresponds to the front end of the transmission ring (30), and the front end of the rear Z-shaped rod (31) and the rear end of the transmission ring (30) are tightly fitted and frictionally driven with each other.

2. The clamping drive device for a rubber wheel according to claim 1, characterized in that: Four guide plates (15) are fixedly mounted on the top end of the first mounting plate (6), and the guide plates (15) block the gap between two adjacent limiting plates (7).

3. The clamping drive device for a rubber wheel according to claim 1, characterized in that: The grooves on the surfaces of the circular track (2), the loading track (4), the unloading track (5) and the splayed track (9) are all adapted to the rubber wheel (8), and the ends of the loading track (4) and the unloading track (5) away from the splayed track (9) are connected to the circular track (2) via a track changing device.

4. The clamping drive device for a rubber wheel according to claim 1, characterized in that: The clamping mechanism comprises a rotating rod (22) whose outer side is rotatably connected to a mounting block (32), a mounting rod (33) fixedly mounted on one end of the mounting block (32) close to the track, a mounting ring (34) slidably connected to the outer side of the mounting rod (33) via a tension spring, and a clamping roller (35) rotatably connected to the bottom end of the mounting ring (34), and the clamping roller (35) is tightly fitted with the track.

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