Two-wheeled electric vehicle frame welding platform

Abstract

The present application relates to the field of welding equipment, and relates to a two-wheel electric vehicle frame welding platform, which comprises a workbench, a ring-shaped frame fixedly connected to the workbench, a clamping mechanism for fixing a pipe, and a cleaning mechanism, a mounting ring coaxial with the pipe is rotatably installed on the ring-shaped frame, a welding head is fixedly connected to the mounting ring, a driving member for driving the mounting ring to rotate is installed on the ring-shaped frame, the cleaning mechanism comprises a cleaning plate connected to the mounting ring, the cleaning plate is in contact with the welding of the pipe, and a moving member for driving the cleaning plate to move away from the pipe is installed on the mounting ring. The present application solves the problem of affecting the welding quality of the pipe.

Description

Technical Field

[0001] This invention relates to the field of welding equipment, and more particularly to a welding platform for a two-wheeled electric vehicle frame. Background Technology

[0002] The production of electric bicycle frames mostly uses automatic or semi-automatic arc welding equipment for welding and fixing. During the welding of electric bicycle frames, brackets are needed to support and position the various components of the frame in order to fix the frame in place. Electric bicycle frames are mostly made of materials such as aluminum alloy, steel, or carbon fiber.

[0003] Related technologies can be found in Chinese invention patent CN122125368A, which discloses a welding production process and equipment for an electric tricycle frame, including a drive mechanism, an installation mechanism, and a welding mechanism. The drive mechanism includes a base, a movable seat, a column, a sleeve, and a drive unit; the movable seat is slidably connected to the base; the drive unit is located on the base and connected to the movable seat; the column is located on the movable seat; the sleeve is located at the top of the column; the installation mechanism includes pipe a, pipe b, and a positioning unit; pipe a and pipe b are rotatably connected to the sleeve; the positioning unit is located on pipe a and pipe b; the welding mechanism includes a ring frame, a laser welding head, a material box, a mixing box, an isolation cover, a high-pressure gas tank, and a magnetic component; the magnetic component is located inside pipe a; the laser welding head and the material box are located on the ring frame; the bottom end of the material box is connected to the mixing box; the bottom end of the mixing box is connected to the isolation cover through a nozzle; the high-pressure gas tank is located on the ring frame and communicates with the mixing box.

[0004] Regarding the aforementioned technologies, if the weld seam of the pipe fitting is not pretreated before spraying and welding, and only relies on the post-cleaning of the high-pressure gas mixture during the welding process, it is difficult to remove iron filings, oxide scale, and burrs at the bevel in advance. This can easily lead to defects such as slag inclusions, porosity, and lack of fusion in the weld seam, thereby reducing the weld seam strength and affecting the welding quality. Summary of the Invention

[0005] To address the issue of welding quality affecting pipe fittings, this invention provides a welding platform for two-wheeled electric vehicle frames.

[0006] The present invention provides a welding platform for a two-wheeled electric vehicle frame, which adopts the following technical solution:

[0007] A welding platform for a two-wheeled electric vehicle frame includes a workbench, a ring frame fixedly connected to the workbench, a clamping mechanism for fixing pipe fittings, and a cleaning mechanism. A mounting ring coaxial with the pipe fitting is rotatably mounted on the ring frame. A welding head is fixedly connected to the mounting ring. A driving component for rotating the mounting ring is mounted on the ring frame. The cleaning mechanism includes a cleaning plate connected to the mounting ring, which makes welding contact with the pipe fitting. A moving component for driving the cleaning plate away from the pipe fitting is mounted on the mounting ring.

[0008] Preferably, a positioning mechanism is installed on both sides of the mounting ring. The positioning mechanism includes a positioning ring fixedly connected to the mounting ring. The positioning ring is coaxial with the pipe. Multiple positioning rods are slidably installed on the positioning ring. The multiple positioning rods are equidistantly distributed around the center of the pipe. All of the multiple positioning rods are in contact with the pipe. A starting component for driving the multiple positioning rods to move synchronously is installed on the positioning ring.

[0009] Preferably, a first nozzle is fixedly connected to the cleaning plate, and a plurality of first nozzles facing the weld are provided on the first nozzle. An annular air pipe is fixedly connected to the mounting ring, and an annular air inlet groove is provided on the annular frame. The annular air pipe communicates with the annular air inlet groove, the annular air inlet groove is connected to an external air pump, and the annular air pipe is connected to the first nozzle.

[0010] Preferably, a second nozzle is fixedly connected to the positioning rod, and the second nozzle is provided with a plurality of second nozzles facing the pipe. The second nozzle is connected to an annular air pipe.

[0011] Preferably, a mounting plate is fixedly connected to the mounting ring, a connecting rod is rotatably mounted on the mounting plate, a protective cover covering the welding head is fixedly connected to the connecting rod, and a flipping component for driving the connecting rod to rotate is mounted on the mounting plate.

[0012] Preferably, a main pipe is fixedly connected to the annular air pipe, the main pipe is connected to the first nozzle through a first branch pipe, the main pipe is connected to the second nozzle through a second branch pipe, a valve shaft is rotatably installed in the main pipe, a valve plate is fixedly connected to the valve shaft, and the valve plate can seal the first branch pipe and the second branch pipe respectively.

[0013] Preferably, a transmission component is installed on the main pipe. When the cleaning plate moves, the cleaning plate can drive the valve shaft to rotate through the transmission component. When the cleaning plate contacts the weld, the valve plate closes the second branch pipe.

[0014] Preferably, the driving component includes a first motor fixedly connected to the ring frame, a first gear ring fixedly connected to the mounting ring, and a first gear meshing with the first gear ring fixedly connected to the output shaft of the first motor.

[0015] Preferably, the clamping mechanism includes two sets of clamping members for clamping the pipe fittings respectively. A support plate is fixedly connected to the worktable. The clamping member includes two clamping cylinders fixedly connected to the support plate. The extended ends of the two clamping cylinders are arranged opposite to each other, and each extended end is fixedly connected to a clamping plate. Both clamping plates are in contact with the pipe fittings.

[0016] Preferably, each of the multiple positioning rods has a ball groove on its end face facing the pipe, and a ball that contacts the pipe is placed in the ball groove.

[0017] In summary, the present invention has at least the following beneficial technical effects:

[0018] 1. The cleaning plate can be used to scrape slag from the weld before welding and to lift and detach from the pipe after welding through the movable parts, so as to avoid the cleaning plate scraping the high temperature molten pool during welding and causing damage to the weld, and to achieve that the cleaning and welding processes do not interfere with each other.

[0019] 2. By cooperating with the first nozzle and the first nozzle facing the weld to rotate circumferentially, the entire annular weld can be blown with air to remove iron filings, dust, and oxide slag; the annular air inlet groove and the annular air pipe rotating air supply structure solve the problem of continuous air supply to the rotating parts and ensure that the air source is uninterrupted during the rotation cleaning process.

[0020] 3. A second nozzle with a second nozzle is installed on the positioning rod, which can apply airflow to the heat-affected zone of the pipe clamping. During the welding process, the thin-walled pipe is cooled by blowing air at a fixed point, which can suppress the softening of the pipe wall caused by the high temperature of welding, prevent the clamping plate from being crushed or damaged, and reduce the amount of welding thermal deformation. Attached Figure Description

[0021] Figure 1 This is a schematic diagram of the overall structure of the welding platform for the two-wheeled electric vehicle frame according to an embodiment of the present invention.

[0022] Figure 2 This is a schematic diagram of the pipe fitting assembly structure according to an embodiment of the present invention.

[0023] Figure 3 This is a schematic diagram of the mounting ring structure according to an embodiment of the present invention.

[0024] Figure 4 This is a schematic diagram of the positioning mechanism according to an embodiment of the present invention.

[0025] Figure 5 This is a schematic diagram of the positioning ring according to an embodiment of the present invention.

[0026] Figure 6 This is a schematic diagram of the cleaning mechanism according to an embodiment of the present invention.

[0027] Figure 7 This is a schematic diagram of the structure of the annular trachea according to an embodiment of the present invention.

[0028] Figure 8 This is a schematic diagram of the structure of the protective cover according to an embodiment of the present invention.

[0029] Figure 9 This is a schematic diagram of the locking mechanism according to an embodiment of the present invention.

[0030] Explanation of reference numerals in the attached drawings: 1. Workbench; 11. Support plate; 12. Welding head; 2. Ring frame; 21. Mounting ring; 211. First gear ring; 22. Mounting plate; 221. Flipping plate; 222. Flipping rod; 23. Connecting rod; 24. Protective cover; 25. First motor; 251. First gear; 26. Guide rod; 27. First spring; 28. Drive rod; 3. Clamping mechanism; 31. Clamping cylinder; 32. Clamping plate; 4. Cleaning mechanism; 41. Cleaning plate; 411. Push block; 412. Rack ; 42. First nozzle; 43. Annular air pipe; 44. Main pipe; 441. First branch pipe; 442. Second branch pipe; 45. Valve shaft; 451. Third gear; 5. Positioning mechanism; 51. Positioning ring; 52. Positioning rod; 521. Ball bearing; 53. Second nozzle; 54. Second motor; 541. Second gear; 55. Second gear ring; 56. Slide rod; 6. Locking mechanism; 61. Second spring; 62. Locking block; 63. Unlocking rod; 64. Unlocking ball; 65. Pull rope; 66. Stop bar. Detailed Implementation

[0031] The following is in conjunction with the appendix Figure 1 -Appendix Figure 9 The present invention will be described in further detail below.

[0032] This invention discloses a welding platform for a two-wheeled electric vehicle frame. (Refer to...) Figures 1 to 8 The system includes a workbench 1, a ring frame 2 fixedly connected to the workbench 1, a clamping mechanism 3 for fixing the pipe fitting, and a cleaning mechanism 4. A mounting ring 21 coaxial with the pipe fitting is rotatably mounted on the ring frame 2. A welding head 12 is fixedly connected to the mounting ring 21. A driving component for driving the mounting ring 21 to rotate is mounted on the ring frame 2. The cleaning mechanism 4 includes a cleaning plate 41 connected to the mounting ring 21. The cleaning plate 41 is in welding contact with the pipe fitting. A moving component for driving the cleaning plate 41 away from the pipe fitting is mounted on the mounting ring 21. The cleaning plate 41 can achieve slag scraping and cleaning of the weld before welding and lifting and detaching from the pipe fitting after welding through the moving component, avoiding damage to the weld caused by the cleaning plate 41 scraping the high-temperature molten pool during welding, and realizing that the cleaning and welding processes do not interfere with each other.

[0033] Reference Figure 2 and Figure 3 The driving component includes a first motor 25 fixedly connected to the ring frame 2, a first gear ring 211 fixedly connected to the mounting ring 21, and a first gear 251 meshing with the first gear ring 211 fixedly connected to the output shaft of the first motor 25.

[0034] Reference Figures 2 to 5Positioning mechanisms 5 are installed on both sides of the mounting ring 21. The positioning mechanism 5 includes a positioning ring 51 fixedly connected to the mounting ring 21. The positioning ring 51 is coaxial with the pipe fitting. Multiple positioning rods 52 are slidably installed on the positioning ring 51. The multiple positioning rods 52 are equidistantly distributed around the center of the pipe fitting. All multiple positioning rods 52 are in contact with the pipe fitting. A starting component for driving the multiple positioning rods 52 to move synchronously is installed on the positioning ring 51. By using multiple circumferentially distributed positioning rods 51 to synchronously press the pipe fitting, the radial misalignment and eccentricity of the two sections of the pipe fitting are automatically corrected using the multi-point centering principle, ensuring the coaxiality of the pipe fitting, avoiding defects such as weld misalignment and uneven wall thickness from the source, and improving the welding dimensional accuracy of the frame.

[0035] Multiple positioning rods 52 have ball grooves on their end faces facing the pipe fitting, and ball 521 that contacts the pipe fitting is placed in the ball grooves; the ball 521 at the end of the positioning rod 52 makes rolling contact with the outer wall of the pipe fitting, changing the sliding friction during tightening to rolling friction, reducing scratches on the surface of the pipe fitting; at the same time, it can be slightly adaptively adjusted under welding vibration, avoiding local dents in the pipe fitting caused by hard tightening, and protecting the appearance integrity of the thin-walled pipe fitting.

[0036] The starting component includes a second motor 54 fixedly connected to the positioning ring 51 and a second gear ring 55 rotatably mounted on the positioning ring 51. The second gear ring 55 is coaxial with the positioning ring 51. A second gear 541 that meshes with the second gear ring 55 is fixedly connected to the output shaft of the second motor 54. The positioning ring 51 has multiple vertical sliding grooves that correspond to the positioning rods 52 respectively. The second gear ring 55 has multiple arc-shaped sliding grooves that correspond to the positioning rods 52 respectively. Each of the positioning rods 52 is fixedly connected to a sliding rod 56. The sliding rods 56 can slide in the vertical sliding grooves and arc-shaped sliding grooves respectively. When the second motor 54 is started, the second motor 54 drives the second gear ring 55 to rotate. The second gear ring 55 drives the three sliding rods 56 to move towards the center of the positioning ring 51. The sliding rods 56 drive the positioning rods 52 to contact the pipe.

[0037] Reference Figures 7 to 8 A first nozzle 42 is fixedly connected to the cleaning plate 41. The first nozzle 42 is equipped with multiple first nozzles facing the weld. An annular air pipe 43 is fixedly connected to the mounting ring 21. An annular air inlet groove is opened on the annular frame 2. The annular air pipe 43 is connected to the annular air inlet groove, which is connected to an external air pump. The annular air pipe 43 is connected to the first nozzle 42. By cooperating with the first nozzles facing the weld and the mounting ring 21 to rotate circumferentially, air can be blown and swept throughout the entire annular weld to remove iron filings, dust, and oxide slag. The rotating air supply structure of the annular air inlet groove and the annular air pipe 43 solves the problem of continuous air supply to rotating parts and ensures that the air source is uninterrupted during the rotating cleaning process.

[0038] Reference Figures 4 to 8A second nozzle 53 is fixedly connected to the positioning rod 52. The second nozzle 53 is provided with multiple second nozzles facing the pipe. The second nozzle 53 is connected to the annular air pipe 43. The second nozzle 53 with second nozzles on the positioning rod 52 can apply airflow to the heat-affected zone of the pipe clamping. During the welding process, the thin-walled pipe is cooled by blowing air at a fixed point, which can suppress the softening of the pipe wall caused by the high temperature of welding, prevent the clamping plate from being crushed or damaged, and reduce the amount of welding thermal deformation.

[0039] A main pipe 44 is fixedly connected to the annular air pipe 43. The main pipe 44 is connected to the first nozzle 42 through a first branch pipe 441, and the main pipe 44 is connected to the second nozzle 53 through a second branch pipe 442. A valve shaft 45 is rotatably installed in the main pipe 44, and a valve plate is fixedly connected to the valve shaft 45. The valve plate can seal the first branch pipe 441 and the second branch pipe 442 respectively. By driving the valve plate through the valve shaft 45 to seal the first branch pipe 441 and the second branch pipe 442 respectively, the mechanical interlocking switching of the cleaning blowing air path and the pipe cooling blowing air path is realized, avoiding the simultaneous opening of the two airflow paths, which would cause air pressure dispersion and airflow turbulence. Structurally, the two blowing conditions are independently controllable.

[0040] A transmission component is installed on the main pipe 44. When the cleaning plate 41 moves, the cleaning plate 41 can drive the valve shaft 45 to rotate through the transmission component. When the cleaning plate 41 contacts the weld, the valve plate closes the second branch pipe 442. The lifting and lowering action of the cleaning plate 41 is linked to the rotation of the valve shaft 45 through the transmission component. The working conditions are automatically switched by pure mechanical means: when the cleaning plate 41 presses down to scrape and clean the weld, the cooling air path is automatically closed and the weld cleaning air path is opened; when the cleaning plate 41 is lifted to detach from the weld, the cleaning air path is automatically closed and the cooling air path is opened. There is no need for electrical control timing, and the reliability of process linkage is high.

[0041] Reference Figures 4 to 8 A mounting plate 22 is fixedly connected to the mounting ring 21. A connecting rod 23 is rotatably mounted on the mounting plate 22. A protective cover 24 covering the welding head 12 is fixedly connected to the connecting rod 23. A flipping component for driving the connecting rod 23 to rotate is installed on the mounting plate 22. The protective cover 24 can be opened and closed in sequence by driving the connecting rod 23 through the flipping component. During the pre-welding cleaning stage, it covers the outside of the welding head 12 to block dust and slag from adhering to the welding nozzle and avoid poor arc ignition. During the welding stage, it flips open to completely avoid the welding path without structural interference, taking into account both welding head protection and normal welding operation.

[0042] Reference Figure 1 The clamping mechanism 3 includes two sets of clamping components for clamping the pipe fittings. A support plate 11 is fixedly connected to the workbench 1. The clamping components include two clamping cylinders 31 fixedly connected to the support plate 11. The extended ends of the two clamping cylinders 31 are arranged opposite to each other, and each extended end is fixedly connected to a clamping plate 32. Both clamping plates 32 are in contact with the pipe fittings.

[0043] Reference Figures 2 to 9 The moving component includes a guide rod 26 fixedly connected to the mounting ring 21. A guide groove for inserting the guide rod 26 is provided on the cleaning plate 41. A locking mechanism 6 for fixing the cleaning plate 41 is installed on the guide rod 26. A brush is fixedly connected to the cleaning plate 41. A first spring 27 is fixedly connected between the guide rod 26 and the inner wall of the guide groove. A drive rod 28 is fixedly connected to the positioning rod 52. A magnet is embedded in the drive rod 28. An iron block that cooperates with the magnet is embedded in the cleaning plate 41. During the positioning process of the positioning rod 52 in positioning the pipe, the positioning rod 52 drives the drive rod 28 to move. The drive rod 28 drives the cleaning plate 41 to move, so that the brush contacts the weld. At this time, the first spring 27 is stretched, the locking mechanism 6 locks the cleaning plate 41, and the positioning rod 52 continues to move and contacts the pipe.

[0044] The guide rod 26 has an installation groove on its side wall. The locking mechanism 6 includes a second spring 61 fixedly connected to the inner wall of the installation groove and a locking block 62 slidably placed in the installation groove. The second spring 61 is fixedly connected to the locking block 62. The guide groove has a locking groove for the locking block 62 to be inserted into. The installation ring 21 has an unlocking groove. An unlocking rod 63 is slidably installed in the unlocking groove. The unlocking rod 63 extends to the outside of the unlocking groove and is fixedly connected to an unlocking ball 64. The unlocking rod 63 and the locking block 62 are fixedly connected by a pull rope 65. A stop rod 66 is fixedly connected to the ring frame 2. The stop rod 66 can contact the unlocking ball 64. When the cleaning plate 41 contacts the weld and rotates one revolution, the unlocking ball 64 contacts the stop rod 66. The stop rod 66 pushes the unlocking ball 64 to move. The unlocking ball 64 drives the unlocking rod 63 to move. The unlocking rod 63 drives the locking block 62 to move through the pull rope 65, so that the locking block 62 is pulled out of the locking groove. The first spring 27 can then drive the cleaning plate 41 to return and separate from the weld.

[0045] Reference Figure 7 and Figure 8 The flipping component includes a flipping plate 221 slidably mounted on the mounting plate 22, a flipping rod 222 rotatably mounted on the flipping plate 221, and a flipping rod 222 rotatably connected to the protective cover 24. A push block 411 is fixedly connected to the cleaning plate 41, and the push block 411 abuts against the flipping plate 221. A torsion spring is sleeved on the rotating shaft installed in the protective cover 24. When the cleaning plate 41 moves toward the weld, the cleaning plate 41 drives the push block 411 to move. At this time, the torsion spring drives the protective cover 24 to flip, thus protecting the weld head 12. When the cleaning plate 41 moves away from the weld, the cleaning plate 41 drives the push block 411 to move, and the push block 411 drives the flipping plate 221 to move. The flipping plate 221 drives the protective cover 24 to flip through the flipping rod 222, thereby opening the protective cover 24.

[0046] Reference Figure 8 and Figure 9The transmission component includes a third gear 451 fixedly connected to the valve shaft 45, and a rack 412 that meshes with the third gear 451 fixedly connected to the cleaning plate 41. When the cleaning plate 41 moves toward the weld, the cleaning plate 41 drives the rack 412 to move, the rack 412 drives the third gear 451 to rotate, the third gear 451 drives the valve shaft 45 to rotate, and the valve shaft 45 drives the valve plate to close the second branch pipe 442.

[0047] The implementation principle of a welding platform for a two-wheeled electric vehicle frame according to an embodiment of the present invention is as follows: First, the second motor 54 is started. The second motor 54 drives multiple positioning rods 52 to move simultaneously toward the center of the pipe. At the same time, one of the positioning rods 52 drives the drive rod 28 to move, and the drive rod 28 drives the cleaning plate 41 to move. When the brush on the cleaning plate 41 contacts the weld, the first spring 27 is stretched, and the locking block 62 locks the cleaning plate 41. The positioning rod 52 continues to move, and the magnet in the drive rod 28 separates from the iron block in the cleaning plate 41. When multiple positioning rods 52 contact the pipe at the same time, the pipe is positioned. When the cleaning plate 41 moves, the cleaning plate 41 drives the push block 411 to move, and the torsion spring drives the protective cover 24 to flip and close, protecting the welding head 12. At the same time, the cleaning plate 41 drives the rack 412 to move, and the rack 412 drives the third gear 451. The third gear 451 rotates, driving the valve shaft 45 to rotate, which in turn drives the valve plate to close the second branch pipe 442. Then, the air pump and the first motor 25 are started. The first motor 25 drives the mounting ring 21 to rotate, which in turn drives the cleaning plate 41 to rotate. At the same time, the air pump blows air into the first nozzle 42, and the cleaning plate 41 and the first nozzle 42 work together to clean the weld. After the cleaning plate 41 rotates one revolution, the unlocking ball 64 contacts the stop rod 66. The stop rod 66 pushes the unlocking ball 64 to move, which in turn drives the unlocking rod 63 to move. The unlocking rod 63 moves the locking block 62 through the pull rope 65, causing the locking block 62 to be pulled out of the locking groove. The first spring 27 drives the cleaning plate 41 to return and separate from the weld. At the same time, the valve plate closes the first branch pipe 441, and the protective cover 24 opens, cooling the pipe while welding it.

[0048] The above are all preferred embodiments of the present invention and are not intended to limit the scope of protection of the present invention. Therefore, all equivalent changes made in accordance with the structure, shape and principle of the present invention should be covered within the scope of protection of the present invention.

Claims

1. A welding platform for a two-wheeled electric vehicle frame, comprising a workbench (1), a ring frame (2) fixedly connected to the workbench (1), a clamping mechanism (3) for fixing pipe fittings, and a cleaning mechanism (4), characterized in that: The ring frame (2) is rotatably mounted with a mounting ring (21) coaxial with the pipe fitting. A welding head (12) is fixedly connected to the mounting ring (21). A driving component for driving the mounting ring (21) to rotate is mounted on the ring frame (2). The cleaning mechanism (4) includes a cleaning plate (41) connected to the mounting ring (21). The cleaning plate (41) is in welding contact with the pipe fitting. A moving component for driving the cleaning plate (41) away from the pipe fitting is mounted on the mounting ring (21).

2. The welding platform for a two-wheeled electric vehicle frame according to claim 1, characterized in that: Positioning mechanisms (5) are installed on both sides of the mounting ring (21). The positioning mechanism (5) includes a positioning ring (51) fixedly connected to the mounting ring (21). The positioning ring (51) is coaxial with the pipe fitting. Multiple positioning rods (52) are slidably installed on the positioning ring (51). The multiple positioning rods (52) are equidistantly distributed around the center of the pipe fitting. The multiple positioning rods (52) are in contact with the pipe fitting. A starting component for driving the multiple positioning rods (52) to move synchronously is installed on the positioning ring (51).

3. The welding platform for a two-wheeled electric vehicle frame according to claim 2, characterized in that: The cleaning plate (41) is fixedly connected to a first nozzle (42), and the first nozzle (42) is provided with a plurality of first nozzles facing the weld. The mounting ring (21) is fixedly connected to an annular air pipe (43). The annular frame (2) is provided with an annular air inlet groove. The annular air pipe (43) is connected to the annular air inlet groove. The annular air inlet groove is connected to an external air pump. The annular air pipe (43) is connected to the first nozzle (42).

4. The welding platform for a two-wheeled electric vehicle frame according to claim 3, characterized in that: The positioning rod (52) is fixedly connected to a second nozzle (53), which is provided with a plurality of second nozzles facing the pipe. The second nozzle (53) is connected to an annular air pipe (43).

5. The welding platform for a two-wheeled electric vehicle frame according to claim 1, characterized in that: A mounting plate (22) is fixedly connected to the mounting ring (21), a connecting rod (23) is rotatably mounted on the mounting plate (22), a protective cover (24) covering the welding head (12) is fixedly connected to the connecting rod (23), and a flipping component for driving the connecting rod (23) to rotate is mounted on the mounting plate (22).

6. The welding platform for a two-wheeled electric vehicle frame according to claim 4, characterized in that: A main pipe (44) is fixedly connected to the annular air pipe (43). The main pipe (44) is connected to the first nozzle (42) through a first branch pipe (441). The main pipe (44) is connected to the second nozzle (53) through a second branch pipe (442). A valve shaft (45) is rotatably installed in the main pipe (44). A valve plate is fixedly connected to the valve shaft (45). The valve plate can seal the first branch pipe (441) and the second branch pipe (442) respectively.

7. The welding platform for a two-wheeled electric vehicle frame according to claim 6, characterized in that: The main pipe (44) is equipped with a transmission component. When the cleaning plate (41) moves, the cleaning plate (41) can drive the valve shaft (45) to rotate through the transmission component. When the cleaning plate (41) contacts the weld, the valve plate closes the second branch pipe (442).

8. The welding platform for a two-wheeled electric vehicle frame according to claim 1, characterized in that: The driving component includes a first motor (25) fixedly connected to the ring frame (2), a first gear ring (211) fixedly connected to the mounting ring (21), and a first gear (251) meshing with the first gear ring (211) fixedly connected to the output shaft of the first motor (25).

9. A welding platform for a two-wheeled electric vehicle frame according to claim 1, characterized in that: The clamping mechanism (3) includes two sets of clamping components for clamping the pipe fittings. A support plate (11) is fixedly connected to the workbench (1). The clamping components include two clamping cylinders (31) fixedly connected to the support plate (11). The extended ends of the two clamping cylinders (31) are arranged opposite to each other, and each extended end is fixedly connected to a clamping plate (32). Both clamping plates (32) are in contact with the pipe fittings.

10. A welding platform for a two-wheeled electric vehicle frame according to claim 2, characterized in that: Each of the positioning rods (52) has a ball groove on its end face facing the pipe, and a ball (521) that contacts the pipe is placed in the ball groove.

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