Parallel annular production line of bicycle forward assembly line

Abstract

The utility model relates to a parallel annular production line of a bicycle forward assembly line. Comprising a supporting structure, an overhead annular track, a traction chain responsible for pulling sliding trolleys to move along the annular track, a plurality of sliding trolleys which are connected to the traction chain at intervals and walk on the annular track, cantilever clamps used for clamping and fixing bicycles and a driving device providing power for the traction chain and the sliding trolleys. The device is stable in supporting and simple in structure; the number of the cantilever clamps can be customized according to needs, and assembling is flexible; each cantilever clamp can be fully utilized, so that space resources and equipment resources are effectively utilized; the floating wheels on the two sides of the sliding trolley can freely float within a certain range, the sliding trolley module can adapt to the track width in a self-adaptive mode, particularly, the self-tensioning function of adjusting the turning radius in real time is achieved, and smooth and stable operation of linear motion and arc-shaped motion is achieved.

Description

Technical Field

[0001] This utility model relates to the technical field of bicycle assembly line equipment, and in particular to a parallel circular production line for bicycle assembly. Background Technology

[0002] Bicycle assembly is a relatively complex process because it involves the precise fitting and adjustment of multiple components. To speed up the assembly process and improve production efficiency and quality, bicycle assembly operations are usually carried out using assembly lines.

[0003] Traditional bicycle assembly lines typically use assembly jigs to fix bicycle frames to a ground-based conveyor line, where bicycles are continuously assembled through a series of processes. This method of placing the conveyor line on the ground occupies a certain amount of floor space. Chinese patent document CN221159242U discloses a suspended assembly line for electric bicycles, which elevates the conveyor mechanism, reducing floor space requirements. However, the conveyor mechanism uses a vertical circular arrangement, leaving nearly half of the jigs idle, indicating that equipment utilization needs improvement. Utility Model Content

[0004] This utility model provides a parallel circular production line for bicycle assembly lines to solve the above-mentioned technical problems.

[0005] This utility model is achieved through the following technical solution:

[0006] The parallel circular production line for bicycle assembly provided in this application includes a support structure, an overhead circular track, a traction chain responsible for pulling sliding trolleys along the circular track, multiple sliding trolleys spaced apart and connected to the traction chain and traveling on the circular track, a cantilever clamp for holding and fixing the bicycle, and a drive device for providing power to the traction chain and the sliding trolleys.

[0007] Optionally, the support structure includes multiple support frames arranged at equal intervals along a straight line. Each support frame includes a support column, a crossbeam, and a longitudinal beam. The top of the support column is connected to the middle of the crossbeam, and both ends of the crossbeam are connected to the longitudinal beams. A horizontally arranged annular track is fixedly connected to both ends of the crossbeam.

[0008] Optionally, the sliding trolley includes a first connecting member, a second connecting member, and a sliding assembly. The first connecting member is connected to a cantilever clamp, the second connecting member is connected to a traction chain, and the sliding assembly is connected to the first and second connecting members. The sliding assembly includes a frame, a fixed wheel system mounted on the frame, a floating wheel system mounted on the frame, and a spring. The fixed wheel system includes multiple traveling wheels for cooperating with the circular track. The floating wheel system includes multiple floating axles that can float left and right, and floating wheels mounted on the floating axles for cooperating with the circular track. The axial direction of the floating axles is perpendicular to the axial direction of the traveling wheels, and the multiple floating axles are movably mounted on both sides of the frame. The spring acts on the frame and the floating axles, and with the cooperation of the spring, the floating axles and floating wheels can float left and right relative to the frame, so that the sliding assembly adapts to the width of the circular track.

[0009] Furthermore, each floating shaft is loosely fitted onto a horizontal guide rod, which is fixedly connected to the vehicle frame; each horizontal guide rod is fitted with the aforementioned spring.

[0010] Optionally, the frame includes a base plate, and the left and right sides of the base plate have mounting holes adapted to the floating shaft, in which the floating shaft is slidably mounted.

[0011] Optionally, the front and rear surfaces of the floating shaft have guide grooves adapted to the substrate, and the edge of the substrate is fitted into the guide grooves.

[0012] Optionally, the second connector includes an L-shaped plate, the horizontal plate of which is fixedly connected to the frame, and the vertical plate of which is connected to the hanger on the traction chain.

[0013] Optionally, the first connector includes a first connecting plate, on which the cantilever clamp is fixed by bolts.

[0014] Optionally, the drive device includes a motor, a transmission mechanism, a sprocket, and a drive chain meshing with the sprocket. The drive chain has teeth for meshing with the traction chain. The transmission mechanism transmits the rotational motion of the motor to the sprocket, which drives the drive chain to move. The drive chain then moves the traction chain along the circular track.

[0015] Optionally, a cable tray is provided on the central axis of the circular track, and the cable tray is fixed at the middle position of the crossbeams of multiple support frames.

[0016] Optionally, a workstation is provided on each side of the area between every two adjacent support frames, and each workstation is equipped with a light, and / or a signboard, and / or a fan, and / or an alarm light; the light, signboard, fan and alarm light are installed on the support frame.

[0017] Compared with the prior art, this application has at least the following beneficial effects:

[0018] 1. This application adopts an overhead parallel ring transmission line, which not only allows for personalized customization of the track length and the number of cantilever clamps, making the assembly flexible; but also ensures that each cantilever clamp is fully utilized, eliminating any idle cantilever clamps and effectively utilizing equipment resources; at the same time, the various processes do not overlap, which can significantly improve the assembly efficiency of bicycles.

[0019] 2. The floating wheels on both sides of the sliding trolley in this application can float freely within a certain range, which can meet the adaptive track width of the sliding trolley module. In particular, it has a self-tensioning function that adjusts the turning radius in real time, realizing smooth operation of linear and arc motion.

[0020] 3. The supporting structure of this application is symmetrically arranged on the left and right, providing stable support and featuring a simple, beautiful, and orderly structure. Furthermore, the use of support columns to support the middle position of the crossbeam, with the two ends of the crossbeam supporting the circular track, allows for a more open operating space on the ground, effectively utilizing space resources. Attached Figure Description

[0021] To more clearly illustrate the technical solutions of the embodiments of this utility model, the drawings used in the embodiments will be briefly introduced below. It should be understood that the following drawings only show some embodiments of this utility model and should not be regarded as a limitation on the scope. For those skilled in the art, other related drawings can be obtained based on these drawings without creative effort.

[0022] Figure 1 This is a perspective view of the parallel circular production line for bicycle assembly in the embodiment;

[0023] Figure 2 This is a side view of the parallel circular production line for bicycle assembly in the embodiment;

[0024] Figure 3 for Figure 1 A magnified view of a section at point A in the middle;

[0025] Figure 4 This is a schematic diagram of the drive device, traction chain, and cantilever clamp in the embodiment.

[0026] Figure 5 This is a schematic diagram illustrating the interaction between the roller and the drive chain in an embodiment.

[0027] Figure 6 This is a schematic diagram illustrating the interaction between the drive chain guide device and the drive chain in the embodiment.

[0028] Figure 7 This is a perspective view of the sliding trolley in the embodiment;

[0029] Figure 8 This is a cross-sectional view of the sliding trolley in the embodiment;

[0030] Figure 9 This is a schematic diagram of the floating shaft in the embodiment;

[0031] Figure 10 This is a schematic diagram of the vehicle frame structure in the embodiment;

[0032] Figure 11 This is a schematic diagram of the structure of the second connector in the embodiment. Detailed Implementation

[0033] To make the objectives, technical solutions, and advantages of the embodiments of this utility model clearer, the technical solutions of the embodiments of this utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this utility model, and not all embodiments. The components of the embodiments of this utility model described and shown in the accompanying drawings can generally be arranged and designed in various different configurations.

[0034] It should be noted that, unless otherwise specified, the embodiments and features described in this utility model can be combined with each other. It should also be noted that the various embodiments in this specification are described in a progressive manner, with each embodiment focusing on the differences from other embodiments; similar or identical parts between embodiments can be referred to interchangeably.

[0035] In the description of this utility model, it should be noted that the terms "upper", "lower", "inner", "outer", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, or the orientation or positional relationship that the utility model product is usually placed in during use, or the orientation or positional relationship that is commonly understood by those skilled in the art. They are only used to facilitate the description of this utility model and to simplify the description, and are not intended to indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model.

[0036] It should be understood that the terms "first" and "second" in this specification are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of indicated technical features. Therefore, a feature defined as "first" or "second" may explicitly or implicitly include at least one of that feature. In the description of this application, "multiple" means at least four, such as four, five, six, etc., unless otherwise explicitly specified.

[0037] In the description of this utility model, it should also be noted that, unless otherwise explicitly specified and limited, the terms "set," "install," "connect," and "link" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; 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; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0038] The parallel circular production line for bicycle assembly line proposed in this application will be further described below with reference to specific embodiments and accompanying drawings.

[0039] The bicycle assembly line parallel circular production line includes a support structure, an overhead circular track 2, a traction chain 3, a sliding trolley 4, a cantilever clamp 5, and a drive unit 6.

[0040] As the supporting part of the entire production line, the support structure is used to provide sufficient support force and play a role in fixing the position, bearing load and transferring load.

[0041] The circular track 2 is laid according to a predetermined circular path to form a circular track network, providing a stable running path for the sliding trolley 4.

[0042] The traction chain 3 is responsible for pulling the sliding trolley 4 smoothly forward along the circular track 2. Of course, the traction chain 3 is equipped with a tensioning device to adjust the tension of the traction chain, ensuring that the conveyor line maintains stable tension and operating conditions during operation. This is standard technology in the field and will not be elaborated further here.

[0043] The sliding trolley 4 serves as a mobile carrier. Multiple sliding trolleys 4 are connected at equal intervals on the traction chain 3 to carry the cantilever clamp 5 and the bicycle 7 to move along the circular track 2.

[0044] The cantilever clamp 5 is used to hold and fix the bicycle 7 to ensure the stability and safety of the bicycle 7 during transportation. It is worth noting that the cantilever clamp 5 can be either an internal tension clamp or an external clamp, which is conventional technology in this field and will not be described in detail here.

[0045] The drive unit 6 is the power source for the entire conveyor line, providing the necessary power to the traction chain 3 and the sliding trolley 4, enabling them to move continuously on the circular track 2. The drive unit 6 drives the traction chain 3 to run on the track, the sliding trolley 4 moves with the traction chain 3, and the cantilever clamp 5 holds the frame and moves synchronously with the bicycle 7 to be assembled.

[0046] Of course, the parallel circular production line for bicycle assembly also has a control system, which is responsible for controlling the start-up, stop, speed adjustment, and fault alarm functions of the conveyor line, ensuring that the conveyor line can operate efficiently and stably according to the predetermined program and requirements. This is conventional technology in this field and will not be elaborated here.

[0047] Please see Figure 1 , Figure 2 In an exemplary embodiment, the support structure includes multiple support frames 1 arranged in a straight line at equal intervals. Each support frame 1 includes support columns 11, crossbeams 12, and longitudinal beams 13. The bottom of the support columns 11 is bolted to the ground, and the top of the support columns 11 is connected to the middle of the crossbeams 12. Both ends of the crossbeams 12 are connected to the longitudinal beams 13. A horizontally arranged annular track 2 is fixedly connected to both ends of the crossbeams 12. The longitudinal beams 13 are located above the crossbeams 12, and the annular track 2 is located below the crossbeams 12. The support structure of this application is symmetrically arranged, providing stable support. In use, both ends of the crossbeams 12 can be connected to one end of a support rod, and the other end of the support rod can be connected to the workshop wall, thus further increasing the strength of the support structure and making the entire support structure more stable.

[0048] Please see Figure 1 , Figure 3 In some embodiments, a workstation can be provided on each side of the area between every two adjacent support frames 1. Each workstation is equipped with a fan 15, a light 16, a tool box 18, and a signboard 19, all of which are mounted on the support frame 1. In an exemplary embodiment, an alarm light 17 is provided at each workstation of the production line, and an alarm switch is configured so that an alarm can be triggered individually when a fault occurs at a certain workstation. Preferably, the alarm light 17 is located at the end of the crossbeam 12.

[0049] In some embodiments, for ease of cable routing, a cable routing groove 14 is provided on the central axis of the conveyor line, and the cable routing groove 14 is fixed at the middle position of the crossbeams 12 of the multiple support frames 1. The tool hanging box 18 can be installed on the support column 11; the fan 15 can be installed on the cable routing groove 14, which can supply air to two workstations at the same time, so that only one fan 15 needs to be installed on the left and right workstations.

[0050] In some embodiments, please refer to Figure 4 The drive unit 6 includes a motor 61, a transmission mechanism 62, a sprocket 63, and a drive chain 64 meshing with the sprocket 63. The transmission mechanism transmits the power of the motor 61 to the sprocket 63. The drive chain 64 has teeth 641 adapted to the traction chain 3, which can mesh with the traction chain 3. The transmission mechanism transmits the rotational motion of the motor 61 to the sprocket 63, which drives the drive chain 64 to move. The drive chain 64 then moves the traction chain 3, causing the traction chain 3 to move along the circular track 2.

[0051] The transmission mechanism 62 can be a gear transmission mechanism, chain transmission mechanism, belt transmission mechanism, etc., which can be selected by those skilled in the art as needed. Of course, the drive unit 6 is equipped with a protective cover. The drive unit is mounted on a drive unit bracket 67, which is fixedly connected to the annular guide rail 2.

[0052] Please see Figure 5 , Figure 6 In an exemplary embodiment, the drive device 6 further includes a drive chain guide device, which includes a straight guide groove 66 and a plurality of rollers 65 mounted on the guide groove 66. The plurality of rollers 65 are arranged in a line and are used to contact the drive chain 64, so that the drive chain 64 runs in a predetermined direction and provides a force to the drive chain 64 so that it can engage with the traction chain 3 for transmission.

[0053] Preferably, the traction chain 3 is a suspension chain with chain wheels, and of course, the circular track 2 has a chain guide rail 21 that cooperates with the chain wheels.

[0054] In some embodiments, the sliding trolley 4 includes a first connector, a second connector, and a sliding assembly. The first connector is used to connect the cantilever clamp 5, the second connector is used to connect the traction chain 3, and the sliding assembly is connected to the first connector and the second connector. The sliding assembly is used to slide and engage with the annular track 2 and can move along the annular track 2 under the drive of the traction chain 3.

[0055] Please see Figure 7 , Figure 8 In an exemplary embodiment, the sliding assembly includes a frame 41, a fixed wheel system and a floating wheel system. The fixed wheel system includes a plurality of traveling wheels 42, which are used to travel on the circular track 2. The traveling wheels 42 are rotatably mounted on wheel seats, which are fixed to the frame 41 by bolts.

[0056] The floating wheel system includes multiple floating shafts 43 that can float left and right, and floating wheels 44 mounted on the floating shafts 43. The axis of the floating shafts 43 is perpendicular to the axis of the traveling wheels 42. The floating wheels 44 are coaxially mounted on the floating shafts 43 and can rotate relative to the floating shafts 43. The multiple floating shafts 43 are movably mounted on both sides of the frame 41. Horizontally arranged springs 45 act on the floating shafts 43. The elasticity of the springs 45 allows the floating wheels 44 to float freely within a certain range, which can meet the adaptive track width requirement of the sliding miniature car model and reduce the requirements for track flatness and width consistency.

[0057] To make the floating shafts 43 float more stably, in the exemplary embodiment, each floating shaft 43 is connected to a horizontal guide rod 46, which is fixedly connected to the frame 41. (See also...) Figure 9The floating shaft 43 has a guide hole 431 that matches the horizontal guide rod 46, and the floating shaft 43 is loosely fitted onto the horizontal guide rod 46. Under the action of the horizontal guide rod 46, the floating shaft 43 can only move left and right, but cannot move up and down or back and forth. Preferably, a spring 45 is fitted onto the horizontal guide rod 46.

[0058] Of course, to prevent the floating shaft 43 from detaching from the horizontal guide rod 46, the horizontal guide rod 46 has a limiting part to prevent the floating shaft 43 from detaching.

[0059] In some embodiments, the horizontal guide rod 46 is a screw, and a nut is fixedly mounted on the frame 41. The horizontal guide rod 46 is threadedly connected to the nut, which facilitates control of the floating distance of the floating wheel 44. In some embodiments, the floating wheel 44 is a rolling bearing.

[0060] In some embodiments of this utility model, the floating shaft 43 is slidably connected to the frame 41, and the floating shaft 43 has a support portion 430, which is supported on the frame 41. The weight of the floating shaft 43 and the floating wheel 44 is transferred to the frame 41 at the support portion 430, then transferred to the traveling wheel 42 through the frame 41, and finally transferred to the support structure through the annular track 2.

[0061] It is worth noting that the number of traveling wheels 42 and floating wheels 44 can be set reasonably according to needs.

[0062] In some embodiments, two floating wheels 44 are mounted on the floating shaft 43, with the two floating wheels 44 located above and below the frame 41, respectively. Preferably, the floating shaft 43 has two guide holes 431, and correspondingly, each floating shaft 43 is equipped with two horizontal guide rods 46 and two springs 45, with the two horizontal guide rods 46 located above and below the base plate 411, respectively.

[0063] In some embodiments, there are two sets of fixed wheel systems, which are symmetrically mounted on the frame 41. Preferably, each set has four wheels 42.

[0064] Please see Figure 7 , Figure 10 In some embodiments, the frame 41 includes a base plate 411, which is generally plate-shaped. The base plate 411 has mounting holes 412 on its left and right sides adapted to the floating shaft 43, which is mounted in the mounting holes 412. The mounting holes 412 allow the floating shaft 43 to float left and right. For a preferred embodiment, please refer to... Figure 9The floating shaft 43 has guide grooves 432 on both the front and rear surfaces that are adapted to the base plate 411. The edge of the base plate 411 is installed in the guide grooves 432. On the one hand, the top of the guide groove 432 can serve as a support part 430 to support the frame 41, so that the weight of the floating shaft 43 and the floating wheel 44 is transferred to the frame 41. On the other hand, the guide groove 432 can also limit the floating shaft 43, so that it can only move left and right, and cannot move forward, backward, or up and down.

[0065] Please see Figure 7 , Figure 10 In some embodiments, the first connector includes a first connecting plate 47 with a first connecting hole. Typically, the first connecting hole is a bolt hole, allowing the cantilever clamp 5 to be fixed to the first connecting plate 47 by bolts and to move relative to the annular track 2 by a sliding assembly. Preferably, the first connecting plate 47 is generally rectangular. In an exemplary embodiment, the first connecting plate 47 is disposed parallel to the base plate 411 directly below it, and the two are connected together by a central connecting post 49. Preferably, the first connecting plate 47, the base plate 411, and the central connecting post 49 are integrally manufactured.

[0066] Of course, holes for mounting the second connector are pre-drilled in the substrate 411. Please refer to... Figure 7 , Figure 11 In some embodiments, the second connector includes an L-shaped plate 48. The horizontal plate of the L-shaped plate 48 is fixedly connected to the frame 41, and the vertical plate of the L-shaped plate 48 has a second connecting hole for connecting to the traction chain 3. Preferably, the second connecting hole is a vertically arranged slot. Please refer to [link to relevant documentation]. Figure 7 In an exemplary embodiment, the horizontal plate of the L-shaped plate 48 is fixed to the center of the top surface of the substrate 411 by bolts.

[0067] Please see Figure 4 In some embodiments, the traction chain 3 is provided with a hanging plate 31, which is used to connect to the second connecting member. Please refer to [link to relevant documentation]. Figure 7 , Figure 11 In an exemplary embodiment, the second connector includes two L-shaped plates 48, with their vertical plates spaced apart to form a space for accommodating the hanging plate 31. The hanging plate 31 has holes adapted to the second connecting holes. By mounting the connecting rod into the holes of the hanging plate 31 and the second connecting holes of the L-shaped plates 48, the sliding trolley 4 can be connected to the traction chain 3, facilitating the transmission of power to the sliding trolley 4. Preferably, the L-shaped plates 48 have two second connecting holes, and each sliding trolley 4 is connected to the traction chain 3 via two hanging plates 31.

[0068] It is worth noting that the number of sliding trolleys 4 and cantilever clamps 5, as well as the spacing between sliding trolleys 4, can be reasonably set as needed. Of course, the length of the circular track 2 can also be reasonably set as needed, and the number of drive devices is set according to the length of the circular track 2; when the conveying line is long, multiple drive devices can be set to drive in sections.

[0069] This application uses a drive device 6 to drive a traction chain 3 to move along a circular track 2. The traction chain 3 then drags a sliding trolley 4 and a cantilever clamp 5 along the circular track 2, thus delivering bicycle frames to various workstations arranged along the circular track 2 for continuous assembly of bicycles 7. Furthermore, when the sliding trolley 4 runs on the circular track 2, its traveling wheels 42 and floating wheels 44 engage with the track 2. The sliding components of the left and right floating wheels 44 can float left and right to accommodate different clearances. The floating wheels 44 are always in contact with the track sidewalls, ensuring smooth operation of the sliding trolley 4. Moreover, the floating wheels 44 provide the sliding trolley 4 with a self-tensioning function that adjusts its turning radius in real time, enabling smooth linear and arc-shaped movements.

[0070] The above are merely preferred embodiments of this utility model and are not intended to limit the scope of this utility model. Various modifications and variations can be made to this utility model by those skilled in the art. Any modifications, equivalent substitutions, or improvements made within the spirit and principles of this utility model should be included within the protection scope of this utility model.

Claims

1. A parallel circular production line for bicycle assembly, characterized in that, include: Support structure; An elevated circular track (2); The traction chain (3) is responsible for pulling the sliding trolley (4) along the circular track (2); Multiple sliding trolleys (4) are intermittently connected to the traction chain (3) and travel on the circular track (2); A cantilever clamp (5) for holding a stationary bicycle (7); and A drive unit (6) that provides power to the traction chain (3) and the sliding trolley (4).

2. The parallel circular production line for bicycle assembly as described in claim 1, characterized in that, The support structure includes multiple support frames (1) arranged along a straight line at equal intervals. Each support frame (1) includes a support column (11), a crossbeam (12), and a longitudinal beam (13). The top of the support column (11) is connected to the middle position of the crossbeam (12), and the two ends of the crossbeam (12) are connected to the longitudinal beam (13) respectively. A horizontally arranged circular track (2) is fixedly connected to the two ends of the crossbeam (12).

3. The parallel circular production line for bicycle assembly as described in claim 1, characterized in that, The sliding trolley (4) includes a first connector, a second connector, and a sliding assembly. The first connector is connected to the cantilever clamp (5), the second connector is connected to the traction chain (3), and the sliding assembly is connected to the first connector and the second connector. The sliding assembly includes: Frame (41) A fixed wheel system is mounted on the frame, the fixed wheel system including a plurality of traveling wheels (42) for cooperating with the circular track (2). A floating wheel system mounted on the frame (41) includes multiple floating shafts (43) that can float left and right, and floating wheels (44) mounted on the floating shafts (43) and used to cooperate with the annular track (2). The axial direction of the floating shafts (43) is perpendicular to the axial direction of the traveling wheels (42). The multiple floating shafts (43) are respectively movably mounted on both sides of the frame (41); and A spring (45) acts on the frame (41) and the floating shaft (43). With the cooperation of the spring (45), the floating shaft (43) and the floating wheel (44) can float left and right relative to the frame (41) so that the sliding assembly adapts to the width of the annular track (2).

4. The parallel circular production line for bicycle assembly according to claim 3, characterized in that, Each floating shaft (43) is loosely fitted onto a horizontal guide rod (46), which is fixedly connected to the frame (41); each horizontal guide rod (46) is fitted with the spring (45).

5. The parallel circular production line for bicycle assembly according to claim 3 or 4, characterized in that, The frame (41) includes a base plate (411), and the left and right sides of the base plate (411) have mounting holes (412) adapted to the floating shaft (43), and the floating shaft (43) is slidably mounted in the mounting holes (412).

6. The parallel circular production line for bicycle assembly according to claim 5, characterized in that, The front and rear surfaces of the floating shaft (43) have guide grooves (432) adapted to the substrate (411), and the edge of the substrate (411) is fitted into the guide grooves (432).

7. The parallel circular production line for bicycle assembly according to claim 3, characterized in that, The second connector includes an L-shaped plate (48), the horizontal plate of which is fixedly connected to the frame (41), and the vertical plate of which is connected to the hanging plate (31) on the traction chain (3).

8. The parallel circular production line for bicycle assembly according to claim 3, characterized in that, The first connector includes a first connecting plate (47), on which the cantilever clamp (5) is fixed by bolts.

9. The parallel circular production line for bicycle assembly according to claim 1, characterized in that, The drive device (6) includes a motor (61), a transmission mechanism (62), a sprocket (63), and a drive chain (64) meshing with the sprocket (63). The drive chain (64) has teeth (641) for meshing with the traction chain (3). The transmission mechanism (62) transmits the rotational motion of the motor (61) to the sprocket (63), which drives the drive chain (64) to move. The drive chain (64) then moves the traction chain (3) along the circular track (2).

10. The parallel circular production line for bicycle assembly according to claim 2, characterized in that, Each of the two adjacent support frames (1) has a workstation on the left and right sides, and each workstation is equipped with a lighting lamp (16), and / or a signboard (19), and / or a fan (15), and / or an alarm light (17); the lighting lamp (16), signboard (19), fan (15) and alarm light (17) are installed on the support frame (1).

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