A corner-type circular conveyor line

Abstract

This invention discloses a corner-type circular conveyor line comprising a support frame, a traction device, a track device, and a transport device. Both the traction device and the track device are mounted on the support frame, and the transport device is slidably mounted on the track device and connected to the traction device. The support frame is used to mount the traction device, track device, and transport device. The traction device drives the transport device to transport goods on the track device, which has a closed circular structure. Multiple sets of transport devices are provided, enabling unlimited circular transport on the track device. Through the coordinated use of the traction device, track device, and transport device, it can be used on any corner production line, effectively reducing the need for robots and saving costs.

Description

Technical Field

[0001] This invention relates to the field of production line transportation technology, and in particular to a corner-type circular conveyor line. Background Technology

[0002] In the automobile production process, production lines cannot be laid out in a straight line according to production needs. Some parts are transported over long distances, while others are transported over short distances, and turning transport is required. Traditional conveyor production lines use robots for transfer. The longer the production line, the more robots are needed, the higher the investment cost, and the higher the maintenance cost of the production line. Summary of the Invention

[0003] The purpose of this invention is to overcome the shortcomings of the prior art and provide a corner-type circular conveyor line.

[0004] The objective of this invention is achieved through the following technical solution:

[0005] A corner-type circular conveyor line includes a support frame, a traction device, a track device, and a transport device. The traction device and the track device are both mounted on the support frame, and the transport device is slidably mounted on the track device and connected to the traction device.

[0006] The transport device includes a load-bearing wheel, a limiting wheel, a load-bearing plate, a first rotation limiting rod, a second rotation limiting rod, a short load-bearing rod, a long load-bearing rod, an adjusting rod, and a parts suspension bracket. The parts suspension bracket is fixedly mounted on the lower end of the adjusting rod. Two suspension lugs are symmetrically fixedly mounted on the upper end of the adjusting rod. Two sliding holes that mate with the suspension lugs are provided through the middle of the long load-bearing rod. Fixed shafts are provided on each of the two sliding holes. Arc-shaped holes that mate with the fixed shafts are provided on the suspension lugs. Second connecting lugs are fixedly mounted on both ends of the long load-bearing rod. The second connecting lugs are connected to the lower end of the second rotation limiting rod. The upper end of the second rotation limiting rod is rotatably mounted on the middle part of the short bearing rod, and the two ends of the short bearing rod are respectively rotatably mounted on the lower end of the first rotation limiting rod. The upper end of the first rotation limiting rod is connected to the first connecting ear through the first hinge shaft. The first connecting ear is fixedly mounted on the lower end of the bearing plate. The bearing wheel is rotatably mounted on the upper part of the bearing plate and cooperates with the upper side of the track device. The limiting wheel is rotatably mounted on the lower part of the bearing plate and cooperates with the lower side of the track device. The fixed shaft, the first hinge shaft, and the second hinge shaft are arranged parallel to each other.

[0007] Furthermore, the traction device includes a traction motor, a traction cable, a traction turntable, a motor frame, a guide wheel, a transport connection component, and a rope clamping component. The motor frame is horizontally fixed on the support frame. The traction motor is fixed on the motor frame and is used to drive the traction turntable to rotate. The rope clamping component is fixed on the track device and is used to clamp the traction cable to the edge of the traction turntable. The traction cable is ring-shaped and cooperates with the track device. The guide wheel, which cooperates with the traction cable, is rotatably mounted on the track device. The upper part of the transport connection component is slidably mounted on the track device. The middle part of the transport connection component is fixedly connected to the traction cable. The lower part of the transport connection component cooperates with the bearing plate.

[0008] Further, the transport connection component includes a traction connection plate, a rope pressure plate, a rotating hook, an upper traction wheel, a lower traction wheel, and a traction wheel plate. The upper traction wheel and the lower traction wheel are rotatably mounted on the upper and lower ends of the traction wheel plate and cooperate with the track device. The traction connection plate is fixedly mounted on the lower middle part of the traction wheel plate. The rope pressure plate is fixedly mounted on the traction wheel plate and is used to fix the traction cable on the rope pressure plate. The rotating hook is vertically rotatably mounted on the traction connection plate and its front end is hinged to the traction connection plate. The middle part of the traction connection plate is fixed. A limiting pin is provided, and a waist hole is provided on the rotating hook to cooperate with the limiting pin. The rear end of the rotating hook is provided with a hook to cooperate with the bearing plate. The front end of the rotating hook is provided with a rotating protrusion. The width of the bearing plate is less than the distance between the hook and the rotating protrusion. Along the forward direction of the transport device, the upper ends of the second, third and fourth bearing plates are all provided with traction inserts to cooperate with the rotating protrusion. The width of the bearing plate plus the length of the traction insert is greater than the distance between the hook and the rotating protrusion.

[0009] Furthermore, the rope clamping component includes a clamping wheel, a clamping frame, a mounting slot plate, a push-out spring, and an adjusting bolt. The mounting slot plate is fixedly mounted on the track device. One end of the clamping frame is hinged to one end of the mounting slot plate, and the other end of the clamping frame is connected to the other end of the mounting slot plate via the adjusting bolt. The push-out spring is sleeved on the adjusting bolt, and both ends of the push-out spring press against the clamping frame and the mounting slot plate, respectively. The clamping wheel is rotatably mounted on the clamping frame and cooperates with the traction cable.

[0010] Furthermore, the track device includes a connecting arm, a traction rail, and a load-bearing rail. The connecting arm is fixedly connected to the support frame, and both the traction rail and the load-bearing rail are circular and fixedly mounted on the connecting arm.

[0011] Furthermore, both the traction rail and the load-bearing rail include an upper rail, a lower rail, and a rail plate. The upper rail and the lower rail are fixedly connected by the rail plate, and the rail plate is fixedly connected to the connecting arm. The upper rail is arranged parallel to the lower rail.

[0012] Furthermore, a pause assembly is fixedly installed on the track plate of the supporting track. The pause assembly includes a fixed base, a pause hook, and a telescopic cylinder. The fixed base is fixedly connected to the track plate. One end of the pause hook is hinged to the fixed base, and the other end of the pause hook is hinged to the output end of the telescopic cylinder. The fixed end of the telescopic cylinder is hinged to the fixed base. A pause hook that cooperates with a pause rod is provided on the rotating end of the pause hook. The pause rod is welded to the short supporting rod.

[0013] Furthermore, the pause assembly also includes a ramp, a sliding rod, and a linkage rod. The middle part of the ramp is hinged to the fixed base. One end of the linkage rod is hinged to the rear end of the ramp, and the other end of the linkage rod is hinged to the rotating end of the pause hook. The sliding rod is fixedly mounted on the rotating end of the rotating hook and engages with the transition sliding surface at the front end of the ramp.

[0014] Furthermore, the middle of the bearing wheel, the limiting wheel, the upper traction wheel, and the lower traction wheel are all provided with grooves.

[0015] Furthermore, the support plate is provided with two support wheels and two limiting wheels, and the two support wheels and the two limiting wheels are arranged in a rectangle.

[0016] The beneficial effects of this invention are:

[0017] 1) In this technology, the traction device, track device and transportation device are used in combination, which can be used on any corner production line, effectively reducing the use of robots and saving costs.

[0018] 2) In this technology, the transport device can rotate in the horizontal direction or in the vertical direction, which enables smooth transport during corner transport and ensures uniform force distribution, thus giving the transport device a longer service life.

[0019] 3) In this technology, the track plate has two functions: one is to connect the upper track and the lower track together, so that both the traction track and the load-bearing track have stronger load-bearing capacity; the other is to fix the track plate to the support frame through the connecting arm, thereby playing a fixed connection role for the track device.

[0020] 4) In this technology, the rope clamping component is fixedly installed on the connecting arm to press the traction cable onto the traction turntable to prevent relative slippage between the traction cable and the traction turntable. Attached Figure Description

[0021] Figure 1 This is a three-dimensional connection structure diagram of the conveyor line;

[0022] Figure 2 A three-dimensional connection structure diagram of the traction device, track device, and transportation device;

[0023] Figure 3 A three-dimensional connection structure diagram between the transport connection components and the transport device;

[0024] Figure 4 A three-dimensional connection structure diagram of the transport connection components, the suspension assembly, and the transport device;

[0025] Figure 5 This is a three-dimensional connection structure diagram of the traction device;

[0026] In the diagram, 1-support frame, 2-bearing wheel, 3-limiting wheel, 4-bearing plate, 5-first rotation limit rod, 6-second rotation limit rod, 7-short bearing rod, 8-long bearing rod, 9-adjusting rod, 10-part suspension frame, 11-suspension lug, 12-sliding hole, 13-fixed shaft, 14-arc-shaped hole, 15-second connecting lug, 16-second hinge shaft, 17-first hinge shaft, 18-first connecting lug, 19-traction insert, 20-traction motor, 21-traction cable, 22-traction turntable, 23-motor frame, 24-guide wheel, 25-traction connecting plate 26-Rope pressure plate, 27-Swivel hook, 28-Upper traction wheel, 29-Lower traction wheel, 30-Traction wheel plate, 31-Limit pin, 32-Waist hole, 33-Bent hook, 34-Rotating protrusion, 35-Pressure wheel, 36-Pressure frame, 37-Mounting slot plate, 38-Push-out spring, 39-Adjusting bolt, 40-Connecting arm, 41-Upper rail, 42-Lower rail, 43-Railway plate, 44-Fixed seat, 45-Pause hook, 46-Telescopic cylinder, 47-Pause lever, 48-Inclined bar, 49-Sliding bar, 50-Linkage rod, 51-Transition sliding surface. Detailed Implementation

[0027] The technical solution of the present invention will be clearly and completely described below with reference to the embodiments. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0028] See Figures 1-5 The present invention provides a technical solution:

[0029] A corner-type circular conveyor line includes a support frame 1, a traction device, a track device, and a transport device. The traction device and track device are both mounted on the support frame 1, and the transport device is slidably mounted on the track device and connected to the traction device. The support frame 1 is used to mount the traction device, track device, and transport device. The traction device drives the transport device to transport goods on the track device, which has a closed circular structure. Multiple sets of transport devices are provided, enabling unlimited circular transport on the track device.

[0030] The transport device includes a bearing wheel 2, a limiting wheel 3, a bearing plate 4, a first rotation limiting rod 5, a second rotation limiting rod 6, a short bearing rod 7, a long bearing rod 8, an adjusting rod 9, and a parts suspension frame 10. The parts suspension frame 10 is fixedly mounted on the lower end of the adjusting rod 9. Two suspension lugs 11 are symmetrically fixedly mounted on the upper end of the adjusting rod 9. Two sliding holes 12 that mate with the suspension lugs 11 are provided through the middle of the long bearing rod 8. Fixed shafts 13 are respectively provided on the two sliding holes 12. Arc-shaped holes 14 that mate with the fixed shafts 13 are provided on the suspension lugs 11. Second connecting lugs 15 are fixedly mounted on both ends of the long bearing rod 8. The second connecting lugs 15 are connected to... The lower end of the second rotation limiting rod 6 is connected to the second hinge shaft 16. The upper end of the second rotation limiting rod 6 is rotatably mounted on the middle of the short bearing rod 7. The two ends of the short bearing rod 7 are respectively rotatably mounted on the lower ends of the first rotation limiting rod 5. The upper end of the first rotation limiting rod 5 is connected to the first connecting ear 18 through the first hinge shaft 17. The first connecting ear 18 is fixedly mounted on the lower end of the bearing plate 4. The bearing wheel 2 is rotatably mounted on the upper part of the bearing plate 4 and cooperates with the upper side of the track device. The limiting wheel 3 is rotatably mounted on the lower part of the bearing plate 4 and cooperates with the lower side of the track device. The fixed shaft 13, the first hinge shaft 17, and the second hinge shaft 16 are arranged parallel to each other. The bearing plate 4 is provided with two bearing wheels 2 and two limiting wheels 3, which are arranged in a rectangle. The lower end of the parts suspension frame 10 is used to transport parts used on the production line. The upper end of the parts suspension frame 10 has two suspension lugs 11. During upward or downward transport, there is relative rotation between the long support rod 8 and the parts suspension frame 10, resulting in significant wear. The two suspension lugs 11 are connected by two fixed shafts 13. Damage to either a suspension lug 11 or a fixed shaft 13 prevents the parts suspension frame 10 from falling. Two second connecting lugs 15 are symmetrically arranged on the long support rod 8, and two first rotation limit rods 5 on the same short support rod 7 are symmetrically arranged. Therefore, each transport device is connected to four support plates 4, allowing the transport device to make any bend for parts transport. The transport device is set on the support rail of the track device. The support wheel 2 contacts the upper rail 41 of the support rail, and the limit wheel 3 contacts the lower rail 42 of the support rail. With the cooperation of the support wheel 2 and the limit wheel 3, the transport device will not detach from the support rail. The cross-sections of the support plate 4 and the traction wheel plate 30 are both C-shaped. The first rotation limit rod 5 and the second rotation limit rod 6 are used to realize the horizontal rotation of the transport device, and the first connecting ear 18 and the second connecting ear 15 are used to realize the vertical rotation of the transport device.

[0031] In some embodiments, the traction device includes a traction motor 20, a traction cable 21, a traction turntable 22, a motor frame 23, a guide wheel 24, a transport connection component, and a rope clamping component. The motor frame 23 is horizontally fixed on the support frame 1. The traction motor 20 is fixedly mounted on the motor frame 23 and drives the traction turntable 22 to rotate. The rope clamping component is fixedly mounted on the track device and clamps the traction cable 21 to the edge of the traction turntable 22. The traction cable 21 is annular and cooperates with the track device. A guide wheel 24 cooperating with the traction cable 21 is rotatably mounted on the track device. The upper part of the transport connection component is slidably mounted on the track device, the middle part of the transport connection component is fixedly connected to the traction cable 21, and the lower part of the transport connection component cooperates with the bearing plate 4. The traction motor 20 is a prior art technology. The traction motor 20 is fixed to the support frame 1 via the motor frame 23. The traction motor 20 drives the traction turntable 22 to rotate, and the traction turntable 22 rotates the traction cable 21. The traction cable 21 drives the transport device to move via the transport connection component. To ensure the smooth operation of the traction cable 21, guide wheels 24 are required at the turning points on the support frame 1 to support the traction cable 21. Guide wheels 24 are provided on both sides of the traction cable 21, and they are rotatably mounted on the connecting arm 40. In the traction device, multiple transport connecting components are evenly spaced on the traction cable 21. Rope clamping components are fixedly mounted on the connecting arm 40 to press the traction cable 21 against the traction turntable 22, preventing relative slippage between the traction cable 21 and the traction turntable 22.

[0032] In some embodiments, the transport connection component includes a traction connection plate 25, a rope pressure plate 26, a rotating hook 27, an upper traction wheel 28, a lower traction wheel 29, and a traction wheel plate 30. The upper traction wheel 28 and the lower traction wheel 29 are rotatably mounted on the upper and lower ends of the traction wheel plate 30 and cooperate with the track device. The traction connection plate 25 is fixedly mounted on the lower middle part of the traction wheel plate 30. The rope pressure plate 26 is fixedly mounted on the traction wheel plate 30 and is used to fix the traction cable 21 to the rope pressure plate 26. The rotating hook 27 is vertically rotatably mounted on the traction connection plate 25 and its front end is hinged to the traction connection plate 25. A limiting pin 31 is fixedly installed in the middle of the 5th bearing plate. A waist hole 32 that mates with the limiting pin 31 is provided on the rotating hook 27. A bent hook 33 that mates with the bearing plate 4 is provided at the rear end of the rotating hook 27. A rotating protrusion 34 is provided at the front end of the rotating hook 27. The width of the bearing plate 4 is less than the distance between the bent hook 33 and the rotating protrusion 34. Along the forward direction of the transport device, traction inserts 19 that mate with the rotating protrusion 34 are provided on the upper ends of the second, third, and fourth bearing plates 4. The width of the bearing plate 4 plus the length of the traction insert 19 is greater than the distance between the bent hook 33 and the rotating protrusion 34. The transport connecting component is slidably mounted on the traction rail of the track device and fixedly connected to the traction cable 21. The traction wheel plate 30 is used to mount the upper traction wheel 28 and the lower traction wheel 29. The upper traction wheel 28 contacts the upper rail 41 of the traction rail, and the lower traction wheel 29 contacts the lower rail 42 of the traction rail. With the cooperation of the upper traction wheel 28 and the lower traction wheel 29, the transport connecting component will not detach from the traction rail. The traction connecting plate 25 is fixed below the traction wheel plate 30. The traction cable 21 is fixed to the traction connecting plate 25 through the rope pressure plate 26. When the traction cable 21 moves, the transport connecting component moves synchronously with the traction cable 21. The function of the rotating hook 27 is to connect the transport connecting component to the first bearing plate 4, so that the traction device moves the transport device during continuous operation. In actual operation, when the rotating protrusion 34 acts on the upper surface of the traction insert 19, the rotating hook 27 will rotate around the hinge axis between the traction connecting plate 25 and the rotating hook 27. At this time, the hook 33 on the rotating hook 27 will be lifted upward, so the hook 33 will not act on the second bearing plate 4, the third bearing plate 4 and the fourth bearing plate 4. Since the first bearing plate 4 is not equipped with the traction insert 19, the hook 33 will always act on the first bearing plate 4 to drive the transport device to move.

[0033] In some embodiments, the rope clamping components include a clamping wheel 35, a clamping frame 36, a mounting slot plate 37, a push-out spring 38, and an adjusting bolt 39. The mounting slot plate 37 is fixedly mounted on the track device. One end of the clamping frame 36 is hinged to one end of the mounting slot plate 37, and the other end of the clamping frame 36 is connected to the other end of the mounting slot plate 37 via the adjusting bolt 39. The push-out spring 38 is sleeved on the adjusting bolt 39, and both ends of the push-out spring 38 press against the clamping frame 36 and the mounting slot plate 37, respectively. The clamping wheel 35 is rotatably mounted on the clamping frame 36 and cooperates with the traction cable 21. Four sets of rope clamping components are provided on the connecting arm 40, which tightly press the traction cable 21 against the traction turntable 22, thus minimizing the relative slippage between the traction cable 21 and the traction turntable 22. Mounting slot plate 37 is fixed to connecting arm 40. Pressure rollers 35 are rotatably mounted on pressure frame 36. One end of pressure frame 36 is hinged to mounting slot plate 37, and the other end, under the action of ejector spring 38, presses pressure rollers 35 against traction cable 21. All pressure rollers 35 are arranged parallel to traction turntable 22. One end of adjusting bolt 39 is fixed to pressure frame 36 with a nut. Mounting slot plate 37 has adjusting holes that mate with the other end of adjusting bolt 39, with a clearance fit between adjusting bolt 39 and adjusting hole.

[0034] In some embodiments, the track device includes a connecting arm 40, a traction track, and a load-bearing track. The connecting arm 40 is fixedly connected to the support frame 1. Both the traction track and the load-bearing track are annular and fixedly mounted on the connecting arm 40. Both the traction track and the load-bearing track include an upper track 41, a lower track 42, and a track plate 43. The upper track 41 and the lower track 42 are fixedly connected via the track plate 43, which is fixedly connected to the connecting arm 40. The upper track 41 is parallel to the lower track 42. The load-bearing wheel 2, the limiting wheel 3, the upper traction wheel 28, and the lower traction wheel 29 all have grooves in their middle portions. The traction cable 21 carries the transport connecting component on the traction track, and the transport connecting component carries the transport device on the load-bearing track. The load-bearing wheel 2, the limiting wheel 3, the upper traction wheel 28, and the lower traction wheel 29 are all pulleys in the prior art. The track plate 43 serves two purposes: first, it connects the upper track 41 and the lower track 42, giving both the traction track and the load-bearing track greater load-bearing capacity; second, the track plate 43 is fixed to the support frame 1 via the connecting arm 40, thus providing a fixed connection for the track device. Both the upper track 41 and the lower track 42 are circular in cross-section, allowing for better coordination with the pulleys.

[0035] In some embodiments, a pause assembly is fixedly installed on the track plate 43 supporting the track. The pause assembly includes a fixed base 44, a pause hook 45, and a telescopic cylinder 46. The fixed base 44 is fixedly connected to the track plate 43. One end of the pause hook 45 is hinged to the fixed base 44, and the other end of the pause hook 45 is hinged to the output end of the telescopic cylinder 46. The fixed end of the telescopic cylinder 46 is hinged to the fixed base 44. A pause hook that cooperates with a pause rod 47 is provided on the rotating end of the pause hook 45. The pause rod 47 is welded to the short support rod 7. The pause assembly also includes an inclined rod 48, a sliding rod 49, and a linkage rod 50. The middle part of the inclined rod 48 is hinged to the fixed base 44. One end of the linkage rod 50 is hinged to the rear end of the inclined rod 48, and the other end of the linkage rod 50 is hinged to the rotating end of the pause hook 45. The sliding rod 49 is fixedly installed on the rotating end of the rotating hook 27 and cooperates with the transition sliding surface 51 at the front end of the inclined rod 48. The device is equipped with a pause component, which allows the transport device to stop at the corresponding processing position on the track device. Then, the parts are precisely positioned by the existing precision positioning device on the track device, and the parts on the transport device can be assembled and disassembled. The telescopic cylinder 46 is existing technology. It drives the pause hook 45 to rotate on the fixed base 44. When the corresponding transport device needs to pause, the telescopic cylinder 46 extends, and the pause hook on the pause hook 45 acts on the pause lever 47. At this time, the corresponding transport device stops moving forward. When the telescopic cylinder 46 extends, under the action of the linkage rod 50, the end of the transition slide surface 51 rotates upward, and the sliding rod 49 on the rotating hook 27 acts on the transition slide surface 51. The rotating hook 27 separates from the bearing plate 4, and the traction device can continue to move without stopping. When the transport device stops, the disassembly and assembly of parts can be performed. After the transport device completes its work, the telescopic cylinder 46 retracts, the pause hook 45 rotates and separates from the pause lever 47. Under the action of the linkage rod 50, the end of the transition slide surface 51 rotates downward, and the sliding rod 49 on the rotating hook 27 does not contact the transition slide surface 51. At this time, the rotating hook 27 will be used on the bearing plate 4 to continue moving the transport device.

[0036] In the description of this invention, it should be understood that the terms "one end", "top", "middle", "other end", "upper", "front end", "rear end", "both ends", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, and are only for the convenience of describing this invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this invention.

[0037] In this invention, unless otherwise explicitly specified and limited, the terms "installation," "setting," "connection," "fixing," "hinged," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal connection of two components or the interaction between two components. Unless otherwise explicitly limited, those skilled in the art can understand the specific meaning of the above terms in this invention according to the specific circumstances.

[0038] The above description is merely a preferred embodiment of the present invention. It should be understood that the present invention is not limited to the forms disclosed herein and should not be construed as excluding other embodiments. It can be used in various other combinations, modifications, and environments, and can be altered within the scope of the concept described herein through the above teachings or related technologies or knowledge. Modifications and variations made by those skilled in the art that do not depart from the spirit and scope of the present invention should be within the protection scope of the appended claims.

Claims

1. A corner-type circular conveyor line, characterized in that: It includes a support frame (1), a traction device, a track device and a transport device. The traction device and the track device are both mounted on the support frame (1). The transport device is slidably mounted on the track device and connected to the traction device. The transport device includes a bearing wheel (2), a limiting wheel (3), a bearing plate (4), a first rotation limiting rod (5), a second rotation limiting rod (6), a short bearing rod (7), a long bearing rod (8), an adjusting rod (9), and a parts suspension frame (10). The parts suspension frame (10) is fixedly mounted on the lower end of the adjusting rod (9). Two suspension lugs (11) are symmetrically fixedly mounted on the upper end of the adjusting rod (9). Two sliding holes (12) that cooperate with the suspension lugs (11) are provided through the middle of the long bearing rod (8). Fixed shafts (13) are respectively provided on the two sliding holes (12). Arc-shaped holes (14) that cooperate with the fixed shafts (13) are provided on the suspension lugs (11). Second connecting lugs (15) are fixedly mounted on both ends of the long bearing rod (8). The second connecting lugs (15) are connected to the parts of the long bearing rod (8). The lower end of the second rotation limiting rod (6) is connected by the second hinge shaft (16). The upper end of the second rotation limiting rod (6) is rotatably disposed on the middle part of the short bearing rod (7). The two ends of the short bearing rod (7) are respectively rotatably disposed on the lower end of the first rotation limiting rod (5). The upper end of the first rotation limiting rod (5) is connected to the first connecting ear (18) through the first hinge shaft (17). The first connecting ear (18) is fixedly disposed on the lower end of the bearing plate (4). The bearing wheel (2) is rotatably disposed on the upper part of the bearing plate (4) and cooperates with the upper side of the track device. The limiting wheel (3) is rotatably disposed on the lower part of the bearing plate (4) and cooperates with the lower side of the track device. The fixed shaft (13), the first hinge shaft (17) and the second hinge shaft (16) are arranged parallel to each other.

2. The corner-type circular conveyor line according to claim 1, characterized in that: The traction device includes a traction motor (20), a traction cable (21), a traction turntable (22), a motor frame (23), a guide wheel (24), a transport connection component, and a rope clamping component. The motor frame (23) is horizontally fixed on the support frame (1). The traction motor (20) is fixed on the motor frame (23) and is used to drive the traction turntable (22) to rotate. The rope clamping component is fixed on the track device and is used to clamp the traction cable (21) to the edge of the traction turntable (22). The traction cable (21) is ring-shaped and cooperates with the track device. The guide wheel (24) that cooperates with the traction cable (21) is rotatably arranged on the track device. The upper part of the transport connection component is slidably arranged on the track device. The middle part of the transport connection component is fixedly connected to the traction cable (21). The lower part of the transport connection component cooperates with the bearing plate (4).

3. The corner-type circular conveyor line according to claim 2, characterized in that: The transport connection component includes a traction connection plate (25), a rope pressure plate (26), a rotating hook (27), an upper traction wheel (28), a lower traction wheel (29), and a traction wheel plate (30). The upper traction wheel (28) and the lower traction wheel (29) are rotatably mounted on the upper and lower ends of the traction wheel plate (30) and cooperate with the track device. The traction connection plate (25) is fixedly mounted on the lower middle part of the traction wheel plate (30). The rope pressure plate (26) is fixedly mounted on the traction wheel plate (30) and is used to fix the traction cable (21) on the rope pressure plate (26). The rotating hook (27) is vertically rotatably mounted on the traction connection plate (25) and its front end is hinged to the traction connection plate (25). The middle part of the traction connection plate (25) is fixedly mounted. There is a limiting pin (31), and the rotating hook (27) is provided with a waist hole (32) that cooperates with the limiting pin (31). The rear end of the rotating hook (27) is provided with a hook (33) that cooperates with the bearing plate (4). The front end of the rotating hook (27) is provided with a rotating protrusion (34). The width of the bearing plate (4) is less than the distance between the hook (33) and the rotating protrusion (34). Along the forward direction of the transport device, the upper ends of the second bearing plate (4), the third bearing plate (4) and the fourth bearing plate (4) are all provided with traction inserts (19) that cooperate with the rotating protrusion (34). The width of the bearing plate (4) plus the length of the traction insert (19) is greater than the distance between the hook (33) and the rotating protrusion (34).

4. A corner-type circular conveyor line according to claim 2 or 3, characterized in that: The rope clamping component includes a clamping wheel (35), a clamping frame (36), a mounting slot plate (37), a push-out spring (38), and an adjusting bolt (39). The mounting slot plate (37) is fixedly mounted on the track device. One end of the clamping frame (36) is hinged to one end of the mounting slot plate (37), and the other end of the clamping frame (36) is connected to the other end of the mounting slot plate (37) through the adjusting bolt (39). The push-out spring (38) is sleeved on the adjusting bolt (39), and both ends of the push-out spring (38) are respectively pressed against the clamping frame (36) and the mounting slot plate (37). The clamping wheel (35) is rotatably mounted on the clamping frame (36) and cooperates with the traction cable (21).

5. A corner-type circular conveyor line according to any one of claims 1-3, characterized in that: The track device includes a connecting arm (40), a traction track and a load-bearing track. The connecting arm (40) is fixedly connected to the support frame (1). The traction track and the load-bearing track are both circular and fixedly mounted on the connecting arm (40).

6. A corner-type circular conveyor line according to claim 5, characterized in that: Both the traction rail and the bearing rail include an upper rail (41), a lower rail (42), and a rail plate (43). The upper rail (41) and the lower rail (42) are fixedly connected by the rail plate (43). The rail plate (43) is fixedly connected to the connecting arm (40). The upper rail (41) is arranged parallel to the lower rail (42).

7. A corner-type circular conveyor line according to claim 6, characterized in that: A pause assembly is fixedly installed on the track plate (43) of the bearing track. The pause assembly includes a fixed seat (44), a pause hook (45), and a telescopic cylinder (46). The fixed seat (44) is fixedly connected to the track plate (43). One end of the pause hook (45) is hinged to the fixed seat (44), and the other end of the pause hook (45) is hinged to the output end of the telescopic cylinder (46). The fixed end of the telescopic cylinder (46) is hinged to the fixed seat (44). A pause hook that cooperates with a pause rod (47) is provided on the rotating end of the pause hook (45). The pause rod (47) is welded to the short bearing rod (7).

8. A corner-type circular conveyor line according to claim 7, characterized in that: The pause assembly also includes a ramp (48), a sliding rod (49), and a linkage rod (50). The middle part of the ramp (48) is hinged to the fixed base (44). One end of the linkage rod (50) is hinged to the rear end of the ramp (48), and the other end of the linkage rod (50) is hinged to the rotating end of the pause hook (45). The sliding rod (49) is fixedly mounted on the rotating end of the rotating hook (27) and cooperates with the transition sliding surface (51) at the front end of the ramp (48).

9. A corner-type circular conveyor line according to claim 3, characterized in that: The middle of the bearing wheel (2), the limiting wheel (3), the upper traction wheel (28), and the lower traction wheel (29) are all provided with grooves.

10. A corner-type circular conveyor line according to any one of claims 1-3, characterized in that: The support plate (4) is provided with two support wheels (2) and two limiting wheels (3), and the two support wheels (2) and the two limiting wheels (3) are arranged in a rectangular shape.

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