An electric tricycle rear axle tube welding machine and its usage method

Abstract

The present invention relates to the technical field of rear axle tube welding, and discloses an electric tricycle rear axle tube welding machine and its use method, including a base. A fixed rod is fixedly connected to the side wall of the base, and an electric telescopic rod is fixedly connected to the end of the fixed rod away from the base. Before use, the power supply of the motor is connected. The motor drives the driving wheel to roll along the outer wall of the placement rack, and the driving wheel drives the L-shaped rod and the sliding block to slide along the inner wall of the arc-shaped track. The sliding block will drive the support frame, the mounting rod and the welding rod to move synchronously, so that the welding rod can weld the gap between the welding frame and the rear axle tube. The driving wheel drives the slide rail to move up and down through the support column, and the slide rail drives the driving rack, forcing the mounting rod and the welding rod to swing regularly up and down around the driving gear, increasing the welding area and ensuring the welding strength between the welding frame and the rear axle tube.

Description

Technical Field

[0001] The present invention relates to the technical field of rear axle tube welding equipment, and specifically relates to an electric tricycle rear axle tube welding machine and its usage method. Background Art

[0002] An electric tricycle is a three-wheel transportation tool powered by a battery and driven by a motor for hauling goods or people. The electric tricycle uses a large-capacity tubular battery with left and right linings, deep discharge, and traction type battery, which can meet the requirements of continuous discharge for long-term work. The battery can be normally used for two years without reducing its internal capacity. The motor of the electric tricycle uses a DC series-excited traction type brushed or brushless motor, and a speed regulation and force increasing device is provided inside the motor. It is not easily damaged during normal use, ensuring strong output power. For the welding of the tricycle rear axle, mostly a pressure-bearing bracket is welded on the outer wall of the axle tube, and the bracket contacts the shock-absorbing plate of the vehicle body.

[0003] During welding, mostly the welding machine performs linear welding along the connecting seam. Among them, the pressure-bearing frame and the axle tube are in a vertical state, and affected by the outer wall of the arc of the axle tube, it is difficult for linear welding to completely cover all the seams, resulting in unreliable welding or small gaps. And the rear axle of the vehicle is a load-bearing position. When the vehicle body is jolted, due to the above small gaps, the welding position will break. In view of the above problems, the following solutions are proposed. Summary of the Invention

[0004] To solve the above technical problems, the present invention provides an electric tricycle rear axle tube welding machine, which includes a base. A fixed rod is fixedly connected to the side wall of the base. One end of the fixed rod away from the base is fixedly connected to an electric telescopic rod. One end of the electric telescopic rod away from the fixed rod is fixedly connected to a placement rack. A welding rack is placed inside the inner wall of the placement rack. The rear axle tube is placed on the top of the base;

[0005] A welding mechanism, the welding mechanism includes an arc-shaped track fixedly connected to the side wall of the placement rack. A sliding block is slidably connected to the inner wall of the arc-shaped track. A support frame is fixedly connected to the top of the sliding block. A mounting rod is rotatably connected to the inner wall of the support frame. A welding rod is slidably connected to the inner wall of the mounting rod. A driving gear is fixedly connected to the side wall of the mounting rod. A limiting component is fixedly connected to the side wall of the sliding block;

[0006] Control mechanism. The control mechanism includes an L-shaped rod fixedly connected to the side wall of the sliding block. One end of the L-shaped rod away from the sliding block is fixedly connected with a motor. The output shaft of the motor is fixedly connected with a driving wheel. A support column is fixedly connected to the side wall of the driving wheel. A roller is rotatably connected to the bottom of the motor. A telescopic rod is fixedly connected to the top of the L-shaped rod. The other end of the telescopic rod is fixedly connected with a slide rail. A driving rack is fixedly connected to the side wall of the slide rail. A welding mechanism and a control mechanism are arranged inside the device. Before use, the base is installed at the required position, the welding frame is placed inside the placement rack, the rear axle tube is placed on the top of the base, and the power supply of the motor is turned on. The motor drives the driving wheel to roll along the outer wall of the placement rack, and the driving wheel drives the L-shaped rod and the sliding block to slide along the inner wall of the arc track. During this process, the sliding block drives the support frame, the mounting rod and the welding rod to move synchronously, so that the welding rod can weld the gap between the welding frame and the rear axle tube. Among them, as the driving wheel rotates, the driving wheel drives the slide rail to move up and down through the support column, and the slide rail drives the driving rack, forcing the mounting rod and the welding rod to swing regularly up and down around the driving gear. Through the application of the above components, while the welding rod welds along the connection position between the welding frame and the rear axle tube, the welding rod is forced to swing, increasing the welding area and ensuring the welding strength between the welding frame and the rear axle tube.

[0007] Preferably, the base further includes a U-shaped rod fixedly connected to the top of the base. A bevel slide rod is slidably connected to the outer wall of the U-shaped rod. A first pushing spring is fixedly connected to the top of the bevel slide rod. One end of the first pushing spring away from the bevel slide rod is fixedly connected to the inner wall of the U-shaped rod.

[0008] Preferably, the limiting component includes an L-shaped slide rail fixedly connected to the side wall of the sliding block. A second pushing spring is fixedly connected to the side wall of the mounting rod. A limiting wheel is rotatably connected to the side wall of the welding rod. A feeding component is fixedly connected to the side wall of the L-shaped slide rail. By using the characteristic that the mounting rod swings regularly, an L-shaped slide rail and a limiting wheel are arranged inside the device. When the mounting rod drives the welding rod to swing, the welding rod drives the limiting wheel to rotate along the outer wall of the L-shaped slide rail. During this process, the limiting wheel is pushed by the second pushing spring and will closely adhere to the outer wall of the L-shaped slide rail. The distances between the L-shaped slide rail and the rear axle tube and the welding frame are equal. Through the application of the limiting wheel, the part of the welding rod extending beyond the L-shaped slide rail is always at an equal length with the welding frame and the rear axle tube under the limitation of the limiting wheel. Through the application of the above components, the distance between the welding rod and the welding frame and the rear axle tube is prevented from deviating greatly, resulting in unequal welding effects and affecting the welding effect of the device.

[0009] Preferably, the limiting component further includes a fixing frame fixedly connected to the side wall of the L-shaped slide rail. A connecting rod is fixedly connected to the top of the fixing frame. The side wall of the driving rack is meshed with the side wall of the driving gear. The inner wall of the slide rail is slidably connected to the outer wall of the support column.

[0010] Preferably, the limiting component further includes a clamping block fixedly connected to the end of the connecting rod away from the fixing frame. A spring plate is fixedly connected to the inner wall of the clamping block, and a welding strip is slidably connected to the inner wall of the clamping block.

[0011] Preferably, the feeding component includes a pressure-receiving plate slidably connected to the inner wall of the L-shaped slide rail. A first rack is fixedly connected to the side wall of the pressure-receiving plate. Slide racks are slidably connected to the inner walls of the through holes on both sides of the L-shaped slide rail. A meshing gear is rotatably connected to the inner wall of the L-shaped slide rail. The side wall of the meshing gear is meshed with the side wall of the slide rack, and the side wall of the meshing gear is meshed with the side of the first rack. A spring telescopic rod is fixedly connected to the side wall of the L-shaped slide rail. The end of the spring telescopic rod away from the L-shaped slide rail is fixedly connected to the top of the pressure-receiving plate. Using the above-mentioned characteristic that the prying plate drives the welding strip, a spring telescopic rod is arranged inside the device. When the welding rod moves away from the pressure-receiving plate, the spring telescopic rod will release mechanical power to force the slide rack to reset. During this process, the slide rack will drive the prying plate to reset. However, limited by the inclination angle of the prying plate, when the prying plate moves upward, it will slide along the outer wall of the welding strip and cannot restrict the outer wall of the welding strip. When the welding strip moves downward or is stationary, the spring plate will closely adhere to the outer wall of the welding strip to ensure that the welding strip will not slide down in the stationary state and ensure the stability of the device feeding.

[0012] Preferably, the feeding component includes a mounting bracket fixedly connected to the side wall of the slide rack. A prying plate is rotatably connected to the inner wall of the mounting bracket. A spiral spring is fixedly connected to the side wall of the prying plate. The end of the spiral spring away from the prying plate is fixedly connected to the side wall of the mounting bracket. Using the above-mentioned characteristic that the welding rod slides inside the L-shaped slide rail, a pressure-receiving plate is arranged inside the device. When the welding rod swings, the welding rod will contact the bottom of the pressure-receiving plate. The pressure-receiving plate is pressed to push the first rack upward. The first rack drives the slide rack to move downward through the meshing gear. At this time, the slide rack will drive the mounting bracket and the prying plate to move downward. During the downward movement of the prying plate, limited by the inclination angle of the prying plate, the downward movement of the prying plate will form a clamping force on the outer wall of the welding strip. When the clamping block moves downward, the welding strip inside the clamping block will move closer to the welding position; in addition, feeding components are installed at both ends of the L-shaped slide rail. When the welding rod approaches one end, the pressure-receiving plate at the same end is pressed, which will drive the corresponding welding strip to penetrate into the welding position. Through the application of the above components, the stability of the single-time feeding of the device is ensured, and feeding deviation is avoided, resulting in uneven welding thickness.

[0013] A usage method of an electric tricycle rear axle bridge tube welder includes the following steps:

[0014] S1: Before use, install the base at the required position, place the welding frame inside the placement rack, place the rear axle bridge tube on the top of the base, and connect the power supply of the motor;

[0015] S2: The motor drives the driving wheel to roll along the outer wall of the placement rack, and the driving wheel drives the L-shaped rod and the sliding block to slide along the inner wall of the arc-shaped track;

[0016] S3: The sliding block will drive the support frame, the mounting rod and the welding rod to move synchronously, so that the welding rod can weld the gap between the welding frame and the rear axle tube. Among them, as the driving wheel rotates, the driving wheel drives the slide rail to move up and down through the support column, and the slide rail drives the driving rack, forcing the mounting rod and the welding rod to swing regularly up and down with the driving gear as the center.

[0017] The present invention has the following beneficial effects:

[0018] (1) Aiming at the problem of gaps in linear welding of the arc surface, a welding mechanism and a control mechanism are provided inside the equipment. Before use, the base is installed at the required position, the welding frame is placed inside the placement rack, the rear axle tube is placed on the top of the base, and the power supply of the motor is turned on. The motor drives the driving wheel to roll along the outer wall of the placement rack, and the driving wheel drives the L-shaped rod and the sliding block to slide along the inner wall of the arc-shaped track. During this process, the sliding block will drive the support frame, the mounting rod and the welding rod to move synchronously, so that the welding rod can weld the gap between the welding frame and the rear axle tube. Among them, as the driving wheel rotates, the driving wheel drives the slide rail to move up and down through the support column, and the slide rail drives the driving rack, forcing the mounting rod and the welding rod to swing regularly up and down with the driving gear as the center. Through the application of the above components, while the welding rod welds along the connection position between the welding frame and the rear axle tube, the welding rod is forced to swing, increasing the welding area and ensuring the welding strength between the welding frame and the rear axle tube.

[0019] (2) Utilizing the characteristic of the regular swing of the mounting rod, an L-shaped slide rail and a limiting wheel are provided inside the equipment. When the mounting rod drives the welding rod to swing, the welding rod will drive the limiting wheel to rotate along the outer wall of the L-shaped slide rail. During this process, the limiting wheel will be pressed tightly against the outer wall of the L-shaped slide rail under the push of the second spring. Among them, the distances between the L-shaped slide rail and the rear axle tube and the welding frame are equal. Through the application of the limiting wheel, the part of the welding rod exceeding the L-shaped slide rail is restricted by the limiting wheel to keep the distances from the welding frame and the rear axle tube equal all the time. Through the application of the above components, it is avoided that the distances between the welding rod and the welding frame and the rear axle tube deviate greatly, resulting in unequal welding effects and affecting the welding effect of the equipment.

[0020] (3) By taking advantage of the feature that the above-mentioned welding rod slides inside the L-shaped slide rail, a pressure-receiving plate is provided inside the device. When the welding rod swings, the welding rod will contact the bottom of the pressure-receiving plate. The pressure-receiving plate is pressed to push the first rack upward. The first rack drives the sliding rack to move downward through the meshing gear. At this time, the sliding rack will drive the mounting bracket and the prying plate to move downward. During the downward movement of the prying plate, affected by the inclination angle of the prying plate, the downward movement of the prying plate will form a clamping force on the outer wall of the welding strip. When the clamping block moves downward, the welding strip inside the clamp moves closer to the welding position; in addition, feeding components are installed at both ends of the L-shaped slide rail. When the welding rod approaches one end, the pressure-receiving plate at the same end is pressed, which will drive the corresponding welding strip to penetrate into the welding position. Through the application of the above components, the stability of the single-time feeding of the device is ensured, and feeding deviation is avoided, which may cause uneven welding thickness.

[0021] (4) By taking advantage of the feature that the above-mentioned prying plate drives the welding strip, a spring telescopic rod is provided inside the device. When the welding rod moves away from the pressure-receiving plate, the spring telescopic rod will release mechanical power to force the sliding rack to reset. During this process, the sliding rack will drive the prying plate to reset. However, limited by the inclination angle of the prying plate, when the prying plate moves upward, it will slide along the outer wall of the welding strip and cannot restrict the outer wall of the welding strip. When the welding strip moves downward or remains stationary, the spring plate will closely adhere to the outer wall of the welding strip to ensure that the welding strip will not slide down when it is in a stationary state, thus ensuring the stability of the device's feeding. Brief Description of the Drawings

[0022] In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings required for describing the embodiments will be briefly introduced below. Obviously, the drawings in the following description are only some embodiments of the present invention. For those of ordinary skill in the art, other drawings can be obtained based on these drawings without creative efforts.

[0023] Figure 1 It is a schematic cross-sectional view of the overall structure of the present invention;

[0024] Figure 2 It is a schematic diagram of the basic component structure of the present invention;

[0025] Figure 3 For the present invention Figure 2 An enlarged schematic view of A in it;

[0026] Figure 4 It is a schematic cross-sectional view of the welding mechanism of the present invention;

[0027] Figure 5 It is a schematic cross-sectional view of the internal components of the welding mechanism of the present invention;

[0028] Figure 6 It is a schematic cross-sectional view of the limiting component of the present invention;

[0029] Figure 7 For the present invention Figure 6 An enlarged schematic diagram of B in the present invention;

[0030] Figure 8 For the present invention Figure 6 An enlarged schematic diagram of C in the present invention;

[0031] Figure 9 For the present invention Figure 6 An enlarged schematic diagram of D in the present invention;

[0032] Figure 10 A schematic diagram of the working process of the present invention.

[0033] In the attached drawings, the list of components represented by each reference numeral is as follows:

[0034] In the figure: 1, base; 11, fixed rod; 12, electric telescopic rod; 13, placement rack; 14, welding rack; 15, rear axle bridge tube; 16, U-shaped rod; 17, inclined slide bar; 18, first push spring; 2, welding mechanism; 21, arc track; 22, sliding block; 23, support frame; 24, mounting rod; 25, driving gear; 26, welding rod; 3, control mechanism; 31, L-shaped rod; 32, driving wheel; 33, support column; 34, motor; 35, roller; 36, telescopic rod; 37, slide rail; 38, driving rack; 4, limiting component; 41, L-shaped slide rail; 42, second push spring; 43, limiting wheel; 44, fixed frame; 45, connecting rod; 46, clamping block; 47, spring plate; 48, welding strip; 5, feeding component; 51, pressure receiving plate; 52, first rack; 53, sliding rack; 54, meshing gear; 55, spring telescopic rod; 56, mounting bracket; 57, prying plate; 58, spiral spring. Specific embodiments

[0035] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present invention.

[0036] Embodiment 1, please refer to Figure 1 - Figure 3 The present invention is an electric tricycle rear axle bridge tube welding machine, including a base 1. A fixed rod 11 is fixedly connected to the side wall of the base 1. One end of the fixed rod 11 away from the base 1 is fixedly connected to an electric telescopic rod 12. One end of the electric telescopic rod 12 away from the fixed rod 11 is fixedly connected to a placement rack 13. A welding rack 14 is placed inside the placement rack 13. A rear axle bridge tube 15 is placed on the top of the base 1;

[0037] Welding mechanism 2, the welding mechanism 2 includes an arc-shaped track 21 fixedly connected to the side wall of the placement rack 13. A sliding block 22 is slidably connected to the inner wall of the arc-shaped track 21. The top of the sliding block 22 is fixedly connected to a support frame 23. A mounting rod 24 is rotatably connected to the inner wall of the support frame 23. A welding rod 26 is slidably connected to the inner wall of the mounting rod 24. A driving gear 25 is fixedly connected to the side wall of the mounting rod 24. A limiting component 4 is fixedly connected to the side wall of the sliding block 22;

[0038] Control mechanism 3, the control mechanism 3 includes an L-shaped rod 31 fixedly connected to the side wall of the sliding block 22. One end of the L-shaped rod 31 away from the sliding block 22 is fixedly connected to a motor 34. The output shaft of the motor 34 is fixedly connected to a driving wheel 32. A support column 33 is fixedly connected to the side wall of the driving wheel 32. A roller 35 is rotatably connected to the bottom of the motor 34. The top of the L-shaped rod 31 is fixedly connected to a telescopic rod 36. The other end of the telescopic rod 36 is fixedly connected to a slide rail 37. A driving rack 38 is fixedly connected to the side wall of the slide rail 37. The welding mechanism 2 and the control mechanism 3 are arranged inside the device. Before use, the base 1 is installed at the required position, the welding rack 14 is placed inside the placement rack 13, and the rear axle pipe 15 is placed on the top of the base 1. Then, the power supply of the motor 34 is turned on. The motor 34 drives the driving wheel 32 to roll along the outer wall of the placement rack 13, and the driving wheel 32 drives the L-shaped rod 31 and the sliding block 22 to slide along the inner wall of the arc-shaped track 21. During this process, the sliding block 22 drives the support frame 23, the mounting rod 24, and the welding rod 26 to move synchronously, so that the welding rod 26 can weld the gap between the welding rack 14 and the rear axle pipe 15. Among them, as the driving wheel 32 rotates, the driving wheel 32 drives the slide rail 37 to move up and down through the support column 33, and the slide rail 37 drives the driving rack 38, forcing the mounting rod 24 and the welding rod 26 to swing regularly around the driving gear 25. Through the application of the above components, while the welding rod 26 welds along the connection position between the welding rack 14 and the rear axle pipe 15, the welding rod 26 is forced to swing, increasing the welding area and ensuring the welding strength between the welding rack 14 and the rear axle pipe 15.

[0039] Embodiment 2, please refer to Figure 4 - Figure 10 In this invention, an electric tricycle rear axle pipe welding machine is provided. On the basis of Embodiment 1, the base 1 further includes a U-shaped rod 16 fixedly connected to the top of the base 1. An inclined slide bar 17 is slidably connected to the outer wall of the U-shaped rod 16. A first pushing spring 18 is fixedly connected to the top of the inclined slide bar 17. One end of the first pushing spring 18 away from the inclined slide bar 17 is fixedly connected to the inner wall of the U-shaped rod 16.

[0040] The limit component 4 includes an L-shaped slide rail 41 fixedly connected to the side wall of the sliding block 22. A second pushing spring 42 is fixedly connected to the side wall of the mounting rod 24. A limit wheel 43 is rotatably connected to the side wall of the welding rod 26. A feeding component 5 is fixedly connected to the side wall of the L-shaped slide rail 41. By utilizing the characteristic of the regular swinging of the mounting rod 24, the L-shaped slide rail 41 and the limit wheel 43 are arranged inside the device. When the mounting rod 24 drives the welding rod 26 to swing, the welding rod 26 will drive the limit wheel 43 to rotate along the outer wall of the L-shaped slide rail 41. During this process, the limit wheel 43 is pushed by the second pushing spring 42 and will closely adhere to the outer wall of the L-shaped slide rail 41. The distances between the L-shaped slide rail 41 and the rear axle tube 15 and the welding frame 14 are equal. Through the application of the limit wheel 43, the part of the welding rod 26 extending beyond the L-shaped slide rail 41 is restricted by the limit wheel 43 to keep the distances from the welding frame 14 and the rear axle tube 15 always equal. Through the application of the above components, it is avoided that the distances between the welding rod 26 and the welding frame 14 and the rear axle tube 15 deviate greatly, resulting in unequal welding effects and affecting the welding effect of the device.

[0041] The limit component 4 further includes a fixed frame 44 fixedly connected to the side wall of the L-shaped slide rail 41. A connecting rod 45 is fixedly connected to the top of the fixed frame 44. The side wall of the driving rack 38 is meshed with the side wall of the driving gear 25. The inner wall of the slide rail 37 is slidably connected to the outer wall of the support column 33.

[0042] The limit component 4 further includes a clamping block 46 fixedly connected to one end of the connecting rod 45 away from the fixed frame 44. A spring plate 47 is fixedly connected to the inner wall of the clamping block 46. A welding strip 48 is slidably connected to the inner wall of the clamping block 46.

[0043] The feeding component 5 includes a pressure-receiving plate 51 slidably connected to the inner wall of the L-shaped slide rail 41. A first rack 52 is fixedly connected to the side wall of the pressure-receiving plate 51. A sliding rack 53 is slidably connected to the inner walls of the through holes on both sides of the L-shaped slide rail 41. A meshing gear 54 is rotatably connected to the inner wall of the L-shaped slide rail 41. The side wall of the meshing gear 54 is meshed with the side wall of the sliding rack 53, and the side wall of the meshing gear 54 is meshed with the side of the first rack 52. A spring telescopic rod 55 is fixedly connected to the side wall of the L-shaped slide rail 41. One end of the spring telescopic rod 55 away from the L-shaped slide rail 41 is fixedly connected to the top of the pressure-receiving plate 51. Using the characteristic that the prying plate 57 drives the welding strip 48 as described above, a spring telescopic rod 55 is provided inside the device. When the welding rod 26 moves away from the pressure-receiving plate 51, the spring telescopic rod 55 will release mechanical power to force the sliding rack 53 to reset. During this process, the sliding rack 53 will drive the prying plate 57 to reset. However, limited by the inclination angle of the prying plate 57, when the prying plate 57 moves upward, it will slide along the outer wall of the welding strip 48 and cannot restrict the outer wall of the welding strip 48. When the welding strip 48 moves downward or remains stationary, the spring plate 47 will closely adhere to the outer wall of the welding strip 48 to ensure that the welding strip 48 will not slide down when it is stationary, thus ensuring the stability of the device feeding.

[0044] The feeding component 5 includes a mounting bracket 56 fixedly connected to the side wall of the sliding rack 53. A prying plate 57 is rotatably connected to the inner wall of the mounting bracket 56. A spiral spring 58 is fixedly connected to the side wall of the prying plate 57. One end of the spiral spring 58 away from the prying plate 57 is fixedly connected to the side wall of the mounting bracket 56. Using the characteristic that the welding rod 26 slides inside the L-shaped slide rail 41 as described above, a pressure-receiving plate 51 is provided inside the device. When the welding rod 26 swings, the welding rod 26 will contact the bottom of the pressure-receiving plate 51. The pressure-receiving plate 51 is pressed to push the first rack 52 upward. The first rack 52 drives the sliding rack 53 to move downward through the meshing gear 54. At this time, the sliding rack 53 will drive the mounting bracket 56 and the prying plate 57 to move downward. During the downward movement of the prying plate 57, limited by the inclination angle of the prying plate 57, the downward movement of the prying plate 57 will form a clamping force on the outer wall of the welding strip 48. When the clamping block 46 moves downward, the welding strip 48 inside the clamping block will move closer to the welding position; in addition, feeding components 5 are installed at both ends of the L-shaped slide rail 41. When the welding rod 26 approaches one end, the pressure-receiving plate 51 at the same end is pressed, which will drive the corresponding welding strip 48 to penetrate into the welding position. Through the application of the above components, the stability of the device's single feeding is ensured, and feeding deviation is avoided, resulting in uneven welding thickness.

[0045] The usage method of this welding device includes the following steps:

[0046] S1: Before use, install the base 1 at the required position, place the welding rack 14 inside the placement rack 13, place the rear axle bridge tube 15 on top of the base 1, and turn on the power supply of the motor 34;

[0047] S2: The motor 34 drives the driving wheel 32 to roll along the outer wall of the placement rack 13, and the driving wheel 32 drives the L-shaped rod 31 and the sliding block 22 to slide along the inner wall of the arc track 21;

[0048] S3: The sliding block 22 will drive the support frame 23, the mounting rod 24 and the welding rod 26 to move synchronously, so that the welding rod 26 can weld the gap between the welding rack 14 and the rear axle bridge tube 15. Among them, as the driving wheel 32 rotates, the driving wheel 32 drives the slide rail 37 to move up and down through the support column 33, and the slide rail 37 drives the driving rack 38, forcing the mounting rod 24 and the welding rod 26 to swing regularly around the driving gear 25.

[0049] A specific application of this embodiment is: Before use, install the base 1 at the required position, place the welding rack 14 inside the placement rack 13, place the rear axle bridge tube 15 on top of the base 1, and turn on the power supply of the motor 34. The motor 34 drives the driving wheel 32 to roll along the outer wall of the placement rack 13, and the driving wheel 32 drives the L-shaped rod 31 and the sliding block 22 to slide along the inner wall of the arc track 21. During this process, the sliding block 22 will drive the support frame 23, the mounting rod 24 and the welding rod 26 to move synchronously, so that the welding rod 26 can weld the gap between the welding rack 14 and the rear axle bridge tube 15. Among them, as the driving wheel 32 rotates, the driving wheel 32 drives the slide rail 37 to move up and down through the support column 33, and the slide rail 37 drives the driving rack 38, forcing the mounting rod 24 and the welding rod 26 to swing regularly around the driving gear 25. Through the application of the above components, while the welding rod 26 welds along the connection position between the welding rack 14 and the rear axle bridge tube 15, the welding rod 26 is forced to swing, increasing the welding area and ensuring the welding strength between the welding rack 14 and the rear axle bridge tube 15.

[0050] Taking advantage of the regular swinging feature of the mounting rod 24, an L-shaped slide rail 41 and a limiting wheel 43 are arranged inside the device. When the mounting rod 24 drives the welding rod 26 to swing, the welding rod 26 will drive the limiting wheel 43 to rotate along the outer wall of the L-shaped slide rail 41. During this process, under the push of the second spring 42, the limiting wheel 43 will closely adhere to the outer wall of the L-shaped slide rail 41. The distances between the L-shaped slide rail 41 and the rear axle tube 15 and the welding frame 14 are equal. Through the application of the limiting wheel 43, the part of the welding rod 26 extending beyond the L-shaped slide rail 41 will always be at an equal length from the welding frame 14 and the rear axle tube 15 under the limitation of the limiting wheel 43. Through the application of the above components, it is avoided that the distances between the welding rod 26 and the welding frame 14 and the rear axle tube 15 deviate greatly, resulting in unequal welding effects and affecting the welding effect of the device. Taking advantage of the feature that the welding rod 26 slides inside the L-shaped slide rail 41, a pressure-receiving plate 51 is arranged inside the device. When the welding rod 26 swings, the welding rod 26 will contact the bottom of the pressure-receiving plate 51. The pressure-receiving plate 51 is pressed to push the first rack 52 upward. The first rack 52 drives the sliding rack 53 to move downward through the meshing gear 54. At this time, the sliding rack 53 will drive the mounting bracket 56 and the prying plate 57 to move downward. During the downward movement of the prying plate 57, affected by the inclination angle of the prying plate 57, the downward movement of the prying plate 57 will form a clamping force on the outer wall of the welding strip 48. When the clamping block 46 moves downward, the welding strip 48 inside the clamp moves closer to the welding position; in addition, feeding components 5 are installed at both ends of the L-shaped slide rail 41. When the welding rod 26 approaches one end, the pressure-receiving plate 51 at the same end is pressed, which will drive the corresponding welding strip 48 to penetrate into the welding position. Through the application of the above components, the stability of the single feeding of the device is ensured, and feeding deviation is avoided, resulting in uneven welding thickness.

[0051] Taking advantage of the feature that the above prying plate 57 drives the welding strip 48, a spring telescopic rod 55 is arranged inside the device. When the welding rod 26 moves away from the pressure-receiving plate 51, the spring telescopic rod 55 will release mechanical power to force the sliding rack 53 to reset. During this process, the sliding rack 53 will drive the prying plate 57 to reset. However, limited by the inclination angle of the prying plate 57, when the prying plate 57 moves upward, it will slide along the outer wall of the welding strip 48 and cannot restrict the outer wall of the welding strip 48. When the welding strip 48 moves downward or remains stationary, the spring plate 47 will closely adhere to the outer wall of the welding strip 48 to ensure that the welding strip 48 will not slide down in the stationary state and ensure the stability of the device feeding.

[0052] The preferred embodiments of the present invention disclosed above are only used to help illustrate the present invention. The preferred embodiments do not describe all the details in detail, nor do they limit the invention to the specific embodiments described. Obviously, many modifications and variations can be made according to the content of this specification. These embodiments are selected and specifically described in this specification to better explain the principles and practical applications of the present invention, so that those skilled in the art can well understand and utilize the present invention. The present invention is only limited by the claims and their full scope and equivalents.

Claims

1. A rear axle tube welding machine for an electric tricycle, comprising a base (1), a fixing rod (11) fixedly connected to a side wall of the base (1), an end of the fixing rod (11) away from the base (1) fixedly connected to an electric telescopic rod (12), an end of the electric telescopic rod (12) away from the fixing rod (11) fixedly connected to a placement frame (13), a welding frame (14) placed on an inner wall of the placement frame (13), and a rear axle tube (15) placed on the top of the base (1), characterized in that: Also includes: A welding mechanism (2), the welding mechanism (2) comprising an arc track (21) fixedly connected to the side wall of the placement frame (13), the inner wall of the arc track (21) being slidably connected to a sliding block (22), the top of the sliding block (22) being fixedly connected to a support frame (23), the inner wall of the support frame (23) being rotatably connected to a mounting rod (24), the inner wall of the mounting rod (24) being slidably connected to a welding rod (26), the side wall of the mounting rod (24) being fixedly connected to a driving gear (25), and the side wall of the sliding block (22) being fixedly connected to a limit assembly (4); A control mechanism (3), the control mechanism (3) comprising an L-shaped rod (31) fixedly connected to a side wall of a sliding block (22), one end of the L-shaped rod (31) away from the sliding block (22) being fixedly connected to a motor (34), an output shaft of the motor (34) being fixedly connected to a driving wheel (32), a side wall of the driving wheel (32) being fixedly connected to a support column (33), a bottom of the motor (34) being rotatably connected to a roller (35), a top of the L-shaped rod (31) being fixedly connected to a telescopic rod (36), the other end of the telescopic rod (36) being fixedly connected to a slide rail (37), and a side wall of the slide rail (37) being fixedly connected to a driving gear rod (38); The limiting assembly (4) comprises an L-shaped slide rail (41) fixedly connected to the side wall of the sliding block (22); a push spring 2 (42) is fixedly connected to the side wall of the mounting rod (24); a limiting wheel (43) is rotatably connected to the side wall of the welding rod (26); and a feed assembly (5) is fixedly connected to the side wall of the L-shaped slide rail (41); The limiting assembly (4) further comprises a fixing frame (44) fixedly connected to the side wall of the L-shaped slide rail (41), and the top of the fixing frame (44) is fixedly connected to the connecting rod (45); The limiting assembly (4) further comprises a clamping block (46) fixedly connected to an end of the connecting rod (45) away from the fixing frame (44), a spring plate (47) fixedly connected to the inner wall of the clamping block (46), and a welding strip (48) slidably connected to the inner wall of the clamping block (46); The feed assembly (5) comprises a pressure plate (51) slidably connected to the inner wall of the L-shaped slide rail (41), a gear rod (52) is fixedly connected to the side wall of the pressure plate (51), sliding gear rods (53) are slidably connected to the inner walls of the through holes on both sides of the L-shaped slide rail (41), a meshing gear (54) is rotatably connected to the inner wall of the L-shaped slide rail (41), the side wall of the meshing gear (54) is meshingly connected to the side wall of the sliding gear rod (53), the side wall of the meshing gear (54) is meshingly connected to the side of the gear rod (52), a spring telescopic rod (55) is fixedly connected to the side wall of the L-shaped slide rail (41), and the end of the spring telescopic rod (55) away from the L-shaped slide rail (41) is fixedly connected to the top of the pressure plate (51); The feed assembly (5) comprises a mounting bracket (56) fixedly connected to the side wall of the sliding gear rod (53); the inner wall of the mounting bracket (56) is rotatably connected to a prying plate (57); the side wall of the prying plate (57) is fixedly connected to a vortex spring (58); and one end of the vortex spring (58) away from the prying plate (57) is fixedly connected to the side wall of the mounting bracket (56).

2. The rear axle tube welding machine for electric tricycle according to claim 1, characterized in that: The base (1) further comprises a U-shaped rod (16) fixedly connected to the top of the base (1); an inclined sliding rod (17) is slidably connected to the outer wall of the U-shaped rod (16); a push spring (18) is fixedly connected to the top of the inclined sliding rod (17); and an end of the push spring (18) away from the inclined sliding rod (17) is fixedly connected to the inner wall of the U-shaped rod (16).

3. The rear axle tube welding machine for electric tricycle according to claim 2, characterized in that: The side wall of the driving gear rod (38) is meshingly connected with the side wall of the driving gear (25), and the inner wall of the slide rail (37) is slidably connected with the outer wall of the support column (33).

4. A method for using a rear axle tube welding machine for an electric tricycle, using the device of the rear axle tube welding machine as claimed in claim 3, characterized in that: The following steps are included: S1: Before use, the base (1) is installed at a desired position, the welding frame (14) is placed inside the placement frame (13), the rear axle bridge pipe (15) is placed on top of the base (1), and the power supply of the motor (34) is turned on; S2: the motor (34) drives the driving wheel (32) to roll along the outer wall of the placement rack (13), and the driving wheel (32) drives the L-shaped rod (31) and the sliding block (22) to slide along the inner wall of the arc track (21); S3: The sliding block (22) drives the support frame (23), the mounting rod (24) and the welding rod (26) to move synchronously, so that the welding rod (26) can weld the gap between the welding frame (14) and the rear axle bridge tube (15), wherein as the driving wheel (32) rotates, the driving wheel (32) drives the slide rail (37) to move up and down through the supporting column (33), and the slide rail (37) drives the driving gear rod (38), forcing the mounting rod (24) and the welding rod (26) to swing up and down regularly with the driving gear (25) as the center.

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