Electric tricycle rear axle tube welding machine and using method thereof

Abstract

The invention relates to the technical field of rear axle tube welding, and discloses an electric tricycle rear axle tube welding machine and a using method thereof.The electric tricycle rear axle tube welding machine comprises a base, a fixing rod is fixedly connected to the side wall of the base, and an electric telescopic rod is fixedly connected to the end, away from the base, of the fixing rod; a motor drives a driving wheel to roll along the outer wall of a placing frame, the driving wheel drives an L-shaped rod and a sliding block to slide along the inner wall of an arc-shaped rail, and the sliding block drives a supporting frame, a mounting rod and a welding rod to move synchronously, so that the welding rod can weld a gap between a welding frame and a rear axle tube; the driving wheel drives the sliding rail to move up and down through the supporting column, the sliding rail drives the driving toothed bar, the mounting rod and the welding rod are forced to regularly swing up and down with the driving gear as the center, the welding area is increased, and the welding strength between the welding frame and the rear axle pipe is guaranteed.

Description

Technical Field

[0001] The invention relates to the technical field of rear axle bridge tube welding equipment, in particular to a rear axle bridge tube welding machine for an electric tricycle and a use method thereof. Background Art

[0002] Electric tricycles are three-wheeled transport vehicles that use batteries as power and motors as drive for transporting goods or people. Electric tricycles use tubular large-capacity, left and right linings, deep discharge, traction batteries that can meet the requirements of long-term continuous discharge. The battery capacity does not decrease after two years of normal use. The electric tricycle motor uses a DC series-excited traction brushed or brushless motor. The motor is equipped with a speed regulating and boosting device. It is not easy to be damaged during normal use, ensuring strong output power. The welding of the rear axle of the tricycle is mostly to weld a compressed bracket on the outer wall of the bridge tube, and the bracket is in contact with the shock-absorbing plate of the vehicle body.

[0003] When welding, the welding machine usually performs linear welding along the connecting gap. The pressure frame and the bridge tube are in a vertical state, and affected by the outer wall of the arc of the bridge tube, it is difficult for linear welding to completely cover all gaps, resulting in unstable welding or the existence of small gaps. The rear axle of the vehicle is a load-bearing position. When the vehicle body is bumped, the above small gaps will cause the welding position to break. In response to the above problems, the following solutions are proposed. Summary of the invention

[0004] In order to solve the above technical problems, the present invention provides a rear axle tube welding machine for an electric tricycle, comprising a base, a fixing rod fixedly connected to the side wall of the base, an electric telescopic rod fixedly connected to one end of the fixing rod away from the base, a placing frame fixedly connected to one end of the electric telescopic rod away from the fixing rod, a welding frame placed on the inner wall of the placing frame, and a rear axle tube placed on the top of the base;

[0005] The welding mechanism includes an arc track fixedly connected to the side wall of the placement rack, a sliding block slidably connected to the inner wall of the arc track, a support frame fixedly connected to the top of the sliding block, a mounting rod rotatably connected to the inner wall of the support frame, a welding rod slidably connected to the inner wall of the mounting rod, a driving gear fixedly connected to the side wall of the mounting rod, and a limit assembly fixedly connected to the side wall of the sliding block;

[0006] The control mechanism includes an L-shaped rod fixedly connected to the side wall of the sliding block, the end of the L-shaped rod away from the sliding block is fixedly connected to the motor, the output shaft of the motor is fixedly connected to the driving wheel, the side wall of the driving wheel is fixedly connected to the support column, the bottom of the motor is rotatably connected to the roller, the top of the L-shaped rod is fixedly connected to the telescopic rod, the other end of the telescopic rod is fixedly connected to the slide rail, the side wall of the slide rail is fixedly connected to the driving gear rod, a welding mechanism and a control mechanism are arranged inside the equipment, before use, the base is installed in the desired position, the welding frame is placed inside the placement frame, the rear axle bridge pipe is placed on the top of the base, and the power of the motor is turned on, and the motor drives the driving wheel along the placement frame. The outer wall of the frame rolls, and the driving wheel drives the L-shaped rod and the sliding block to slide along the inner wall of the arc track. In this process, the sliding block will drive the supporting 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 bridge tube. 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 gear rod, forcing the mounting rod and the welding rod to swing up and down regularly with the driving gear as the center. Through the application of the above components, while the welding rod is welded along the connection position between the welding frame and the rear axle bridge tube, the welding rod is forced to swing, thereby increasing the welding area and ensuring the welding strength between the welding frame and the rear axle bridge tube.

[0007] Preferably, the base also includes a U-shaped rod fixedly connected to the top of the base, an inclined sliding rod is slidably connected to the outer wall of the U-shaped rod, a push spring 1 is fixedly connected to the top of the inclined sliding rod, and the end of the push spring 1 away from the inclined sliding rod is fixedly connected to the inner wall of the U-shaped rod.

[0008] Preferably, the limit assembly includes an L-shaped slide rail fixedly connected to the side wall of the sliding block, a pushing spring 2 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, and a feeding assembly is fixedly connected to the side wall of the L-shaped slide rail. Utilizing the regular swinging characteristic of the mounting rod, an L-shaped slide rail and a limiting wheel are arranged 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. In this process, the limiting wheel will be pushed by the pushing spring 2 and will be tightly attached to the outer wall of the L-shaped slide rail, wherein the distance between the L-shaped slide rail and the rear axle bridge tube and the welding frame is equal. Through the application of the limiting wheel, the part of the welding rod that exceeds the L-shaped slide rail is forced to always be equal in length with the welding frame and the rear axle bridge tube under the restriction of the limiting wheel. Through the application of the above-mentioned components, a large deviation in the distance between the welding rod and the welding frame and the rear axle bridge tube is avoided, resulting in unequal welding effects and affecting the welding effects of the equipment.

[0009] Preferably, the limiting assembly also 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 gear rod is meshingly connected to the side wall of the driving gear, and the inner wall of the slide rail is slidably connected to the outer wall of the support column.

[0010] Preferably, the limiting assembly further comprises a clamping block fixedly connected to one 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 assembly includes a pressure plate slidably connected to the inner wall of the L-shaped slide rail, a gear rod 1 is fixedly connected to the side wall of the pressure plate, gears are slidably connected to the inner walls of the through holes on both sides of the L-shaped slide rail, a gear rod 2 is rotatably connected to the inner wall of the L-shaped slide rail, the side wall of the gear rod 2 is meshed with the side wall of the gear, the side wall of the gear rod 2 is meshed with the side of the gear rod 1, a spring telescopic rod is fixedly connected to the side wall of the L-shaped slide rail, one end of the spring telescopic rod away from the L-shaped slide rail is fixedly connected to the top of the pressure plate, and the above-mentioned prying plate is used to drive the welding strip The equipment has the characteristics of a spring telescopic rod, which is arranged inside the equipment. When the welding rod is away from the pressure plate, the spring telescopic rod will release mechanical power to force the gear to reset. In this process, the gear will drive the prying plate to reset, but is limited by the inclination angle of the prying plate. When the prying plate moves up, 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 down or does not move, the spring plate will be close to the outer wall of the welding strip to ensure that the welding strip will not slide down when it is not moving, thereby ensuring the stability of the equipment feeding.

[0012] Preferably, the feeding assembly includes a mounting bracket fixedly connected to the side wall of the gear, a prying plate is rotatably connected to the inner wall of the mounting bracket, a vortex spring is fixedly connected to the side wall of the prying plate, and one end of the vortex spring away from the prying plate is fixedly connected to the side wall of the mounting bracket. By utilizing the characteristic that the welding rod slides inside the L-shaped slide rail, a pressure plate is provided inside the equipment. When the welding rod swings, the welding rod will contact the bottom of the pressure plate. The pressure on the pressure plate pushes the gear rod 1 to rise, and the gear rod 1 drives the gear to move downward through the gear rod 2. At this time, the gear will drive The mounting bracket and the pry plate move downward. During the downward movement of the pry plate, the pry plate will form a clamping force on the outer wall of the welding strip due to the influence of the inclination angle of the pry plate. When the clamping block moves downward, the welding strip inside is clamped 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 plate at the same end is compressed, which will drive the corresponding welding strip to penetrate into the welding position. Through the application of the above components, the stability of the equipment's single feeding is guaranteed, and feeding deviation is avoided, which leads to uneven welding thickness.

[0013] A method for using a rear axle pipe welding machine for an electric tricycle comprises the following steps:

[0014] S1: Before use, install the base at the desired position, place the welding frame inside the placement frame, place the rear axle bridge pipe on the top of the base, and turn on the power 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 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 bridge tube. 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 gear rod, forcing the mounting rod and the welding rod to swing up and down regularly with the driving gear as the center.

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

[0018] (1) In order to solve the problem of gaps in linear welding of arc surfaces, the present invention provides a welding mechanism and a control mechanism inside the device. Before use, the base is installed at the desired position, and the welding frame is placed inside the placement frame, and the rear axle bridge tube is placed on the top of the base, and the power of the motor is turned on. The motor drives the driving wheel to roll along the outer wall of the placement frame, 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 bridge tube. 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 gear rod, forcing the installation rod and the welding rod to swing up and down regularly with the driving gear as the center. Through the application of the above components, while the welding rod is welded along the connection position between the welding frame and the rear axle bridge tube, the welding rod is forced to swing, thereby increasing the welding area and ensuring the welding strength between the welding frame and the rear axle bridge tube.

[0019] (2) The present invention utilizes the characteristic of regular swinging of the installation rod, and an L-shaped slide rail and a limiting wheel are arranged inside the equipment. When the installation 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. In this process, the limiting wheel will be pushed by the push spring 2 to be tightly attached to the outer wall of the L-shaped slide rail, wherein the distance between the L-shaped slide rail and the rear axle bridge tube and the welding frame is equal. Through the use of the limiting wheel, the part of the welding rod that exceeds the L-shaped slide rail is forced to be always at the same length as the welding frame and the rear axle bridge tube under the restriction of the limiting wheel. Through the use of the above-mentioned components, a large deviation in the distance between the welding rod and the welding frame and the rear axle bridge tube can be avoided, resulting in unequal welding effects and affecting the welding effect of the equipment.

[0020] (3) The present invention utilizes the characteristic that the welding rod slides inside the L-shaped slide rail, and a pressure plate is arranged inside the equipment. When the welding rod swings, the welding rod will contact the bottom of the pressure plate, and the pressure on the pressure plate will push the gear bar 1 to rise, and the gear bar 1 drives the gear to move downward through the gear bar 2. At this time, the gear 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, and when the clamping block moves downward, the welding strip inside the clamp 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 plate at the same end is compressed, 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 feeding of the equipment is guaranteed, and feeding deviation is avoided, which leads to uneven welding thickness.

[0021] (4) The present invention utilizes the characteristic of the prying plate driving the welding strip, and a spring telescopic rod is arranged inside the equipment. When the welding strip moves away from the pressure plate, the spring telescopic rod will release mechanical power to force the gear to reset. During this process, the gear will drive the prying plate to reset. However, due to the inclination angle of the prying plate, when the prying plate moves up, 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 down or is stationary, the spring plate will be tightly attached to the outer wall of the welding strip, ensuring that the welding strip will not slide down when it is stationary, thereby ensuring the stability of the equipment feeding. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the accompanying drawings required for describing the embodiments will be briefly introduced below. Obviously, the accompanying drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other accompanying drawings can be obtained based on these accompanying drawings without paying creative work.

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

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

[0025] Figure 3 For the present invention Figure 2 A is an enlarged schematic diagram;

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

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

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

[0029] Figure 7 For the present invention Figure 6 A magnified schematic diagram of B;

[0030] Figure 8 For the present invention Figure 6 A magnified schematic diagram of middle C;

[0031] Fig. 9 For the present invention Figure 6 A magnified schematic diagram of D in the middle;

[0032] Fig.10 It is a schematic diagram of the working process of the present invention.

[0033] In the accompanying drawings, the components represented by the reference numerals are listed as follows:

[0034] In the figure: 1. base; 11. fixing rod; 12. electric telescopic rod; 13. placement rack; 14. welding rack; 15. rear axle bridge tube; 16. U-shaped rod; 17. inclined sliding rod; 18. push spring 1; 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 gear rod; 4, limit assembly; 41, L-shaped slide rail; 42, push spring two; 43, limit wheel; 44, fixed frame; 45, connecting rod; 46, clamping block; 47, spring plate; 48, welding strip; 5, feed assembly; 51, pressure plate; 52, gear rod one; 53, gear; 54, gear rod two; 55, spring telescopic rod; 56, mounting bracket; 57, pry plate; 58, vortex spring. DETAILED DESCRIPTION

[0035] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0036] For example, see Figure 1 - Figure 3 The present invention is a rear axle tube welding machine for an electric tricycle, comprising a base 1, a fixing rod 11 is fixedly connected to the side wall of the base 1, an electric telescopic rod 12 is fixedly connected to the end of the fixing rod 11 away from the base 1, a placing frame 13 is fixedly connected to the end of the electric telescopic rod 12 away from the fixing rod 11, a welding frame 14 is placed on the inner wall of the placing frame 13, and a rear axle tube 15 is placed on the top of the base 1;

[0037] The welding mechanism 2 includes an arc track 21 fixedly connected to the side wall of the placement frame 13, a sliding block 22 is slidably connected to the inner wall of the arc track 21, a support frame 23 is fixedly connected to the top of the sliding block 22, 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, and a limiting component 4 is fixedly connected to the side wall of the sliding block 22;

[0038] The control mechanism 3 includes an L-shaped rod 31 fixedly connected to the side wall of the sliding block 22, and the 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, and a support column 33 is fixedly connected to the side wall of the driving wheel 32, and the bottom of the motor 34 is rotatably connected to a roller 35, and the top of the L-shaped rod 31 is fixedly connected to a telescopic rod 36, and the other end of the telescopic rod 36 is fixedly connected to a slide rail 37, and a driving gear rod 38 is fixedly connected to the side wall of the slide rail 37. A welding mechanism 2 and a control mechanism 3 are arranged inside the device. Before use, the base 1 is installed at the desired position, and the welding frame 14 is placed inside the placement frame 13, and the rear axle bridge pipe 15 is placed on the top of the base 1, and the power of the motor 34 is turned on, and the motor 34 drives the driving wheel 32 to move along the placement frame 13 rolls, 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 frame 14 and the rear axle bridge tube 15. 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 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. Through the application of the above-mentioned components, while the welding rod 26 is welded along the connection position between the welding frame 14 and the rear axle bridge tube 15, the welding rod 26 is forced to swing, thereby increasing the welding area and ensuring the welding strength between the welding frame 14 and the rear axle bridge tube 15.

[0039] For example 2, please refer to Figure 4 - Fig.10 The present invention is a rear axle bridge tube welding machine for an electric tricycle. Based on the first embodiment, the base 1 also includes a U-shaped rod 16 fixedly connected to the top of the base 1, and a sloped slide bar 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 sloped slide bar 17, and one end of the push spring 18 away from the sloped slide bar 17 is fixedly connected to the inner wall of the U-shaped rod 16.

[0040] The limiting assembly 4 includes an L-shaped slide rail 41 fixedly connected to the side wall of the sliding block 22, a push spring 42 fixedly connected to the side wall of the mounting rod 24, a limiting wheel 43 rotatably connected to the side wall of the welding rod 26, and a feeding assembly 5 fixedly connected to the side wall of the L-shaped slide rail 41. By utilizing the regular swinging characteristics of the mounting rod 24, an L-shaped slide rail 41 and a limiting wheel 43 are arranged inside the equipment. 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. In this process, the limiting wheel 4 Under the push of the push spring 242, the welding rod 26 will be closely attached to the outer wall of the L-shaped slide rail 41, wherein the distances between the L-shaped slide rail 41 and the rear axle bridge tube 15 and the welding frame 14 are equal. By using the limiting wheel 43, the welding rod 26 is forced to exceed the portion of the L-shaped slide rail 41, and the distances between the welding frame 14 and the rear axle bridge tube 15 are always in a state of equal length under the restriction of the limiting wheel 43. By using the above components, it is avoided that the distances between the welding rod 26 and the welding frame 14 and the rear axle bridge tube 15 have a large deviation, resulting in unequal welding effects and affecting the welding effects of the equipment.

[0041] The limiting assembly 4 also includes a fixing frame 44 fixedly connected to the side wall of the L-shaped slide rail 41, and a connecting rod 45 is fixedly connected to the top of the fixing frame 44. The side wall of the driving gear rod 38 is meshedly 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.

[0042] The limiting assembly 4 also includes a clamping block 46 fixedly connected to the end of the connecting rod 45 away from the fixing frame 44 , a spring plate 47 is fixedly connected to the inner wall of the clamping block 46 , and a welding strip 48 is slidably connected to the inner wall of the clamping block 46 .

[0043] The feeding assembly 5 includes a pressure plate 51 slidably connected to the inner wall of the L-shaped slide rail 41, a gear rod 1 52 is fixedly connected to the side wall of the pressure plate 51, a gear 53 is slidably connected to the inner wall of the through hole on both sides of the L-shaped slide rail 41, a gear rod 2 54 is rotatably connected to the inner wall of the L-shaped slide rail 41, the side wall of the gear rod 2 54 is meshed with the side wall of the gear 53, the side wall of the gear rod 2 54 is meshed with the side of the gear rod 1 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, and the above-mentioned prying plate 57 is used to drive the welding The characteristic of strip 48 is that a spring telescopic rod 55 is arranged inside the equipment. When the welding rod 26 is away from the pressure plate 51, the spring telescopic rod 55 will release mechanical power to force the gear 53 to reset. In this process, the gear 53 will drive the prying plate 57 to reset. However, due to the inclination angle of the prying plate 57, when the prying plate 57 moves up, 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 down or is stationary, the spring plate 47 will be close to the outer wall of the welding strip 48 to ensure that the welding strip 48 will not slide down when it is stationary, thereby ensuring the stability of the equipment feeding.

[0044] The feeding assembly 5 includes a mounting bracket 56 fixedly connected to the side wall of the gear 53, a prying plate 57 is rotatably connected to the inner wall of the mounting bracket 56, a vortex spring 58 is fixedly connected to the side wall of the prying plate 57, 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. By utilizing the characteristic that the welding rod 26 slides inside the L-shaped slide rail 41, a pressure plate 51 is arranged inside the device. When the welding rod 26 swings, the welding rod 26 will contact the bottom of the pressure plate 51, and the pressure plate 51 pushes the gear rod 1 52 upward under pressure, and the gear rod 1 52 drives the gear 53 to move downward through the gear rod 2 54. The gear 53 will drive the mounting bracket 56 and the prying plate 57 to move downward. During the downward movement 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 due to the influence of the inclination angle of the prying plate 57. When the clamping block 46 moves downward, the internal welding strip 48 is clamped and moved 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 plate 51 at the same end is compressed, 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 equipment's single feeding is guaranteed, and feeding deviation is avoided, which leads to uneven welding thickness.

[0045] The method for using the welding device comprises the following steps:

[0046] S1: Before use, the base 1 is installed at the desired position, the welding frame 14 is placed inside the placement frame 13, the rear axle bridge pipe 15 is placed on the top of the base 1, and the power supply of the motor 34 is turned on;

[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 frame 14 and the rear axle bridge tube 15. 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 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.

[0049] A specific application of this embodiment is: before use, the base 1 is installed at the desired position, and the welding frame 14 is placed inside the placement frame 13, and the rear axle bridge pipe 15 is placed on the top of the base 1, and the power of the motor 34 is turned on. The motor 34 drives the driving wheel 32 to roll along the outer wall of the placement frame 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. In this process, the sliding block 22 will drive the support frame 23, the installation rod 24 and the welding rod 26 to move synchronously, so that the welding rod 26 can The gap between the welding frame 14 and the rear axle bridge tube 15 can be welded, wherein 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 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. Through the application of the above-mentioned components, while the welding rod 26 is welded along the connection position between the welding frame 14 and the rear axle bridge tube 15, the welding rod 26 is forced to swing, thereby increasing the welding area and ensuring the welding strength between the welding frame 14 and the rear axle bridge tube 15.

[0050] Taking advantage of the regular swinging characteristic of the mounting rod 24, an L-shaped slide rail 41 and a limiting wheel 43 are provided inside the equipment. 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. In this process, the limiting wheel 43 will be pushed by the pushing spring 242 to be tightly attached to the outer wall of the L-shaped slide rail 41, wherein the distance between the L-shaped slide rail 41 and the rear axle bridge tube 15 and the welding frame 14 is equal. By using the limiting wheel 43, the welding rod 26 is forced to extend beyond the L-shaped slide rail 41. Under the restriction of the limiting wheel 43, the distance between the welding frame 14 and the rear axle bridge tube 15 is always in a state of equal length. By using the above-mentioned components, a large deviation in the distance between the welding rod 26 and the welding frame 14 and the rear axle bridge tube 15 is avoided, resulting in unequal welding effects and affecting the welding effects of the equipment. The characteristic of internal sliding is that a pressure plate 51 is arranged inside the equipment. When the welding rod 26 swings, the welding rod 26 will contact with the bottom of the pressure plate 51. The pressure plate 51 is pressed to push the gear rod 1 52 up. The gear rod 1 52 drives the gear 53 to move downward through the gear rod 2 54. At this time, the gear 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 is clamped and moved 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 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 equipment is guaranteed, and the feeding deviation is avoided, which leads to uneven welding thickness.

[0051] Taking advantage of the feature of the prying plate 57 driving the welding strip 48, a spring telescopic rod 55 is provided inside the equipment. When the welding rod 26 moves away from the pressure plate 51, the spring telescopic rod 55 will release mechanical power to force the gear 53 to reset. During this process, the gear 53 will drive the prying plate 57 to reset. However, due to 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 will not be able to restrict the outer wall of the welding strip 48. When the welding strip 48 moves downward or is stationary, the spring plate 47 will be tightly attached to the outer wall of the welding strip 48 to ensure that the welding strip 48 will not slide down when it is stationary, thereby ensuring the stability of the equipment 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 implementation methods described. Obviously, many modifications and changes can be made according to the content of this specification. This specification selects and specifically describes these embodiments in order to better explain the principles and practical applications of the present invention, so that those skilled in the art can understand and use the present invention well. The present invention is limited only 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 the side wall of the base (1), an electric telescopic rod (12) fixedly connected to the end of the fixing rod (11) away from the base (1), a placement frame (13) fixedly connected to the end of the electric telescopic rod (12) away from the fixing rod (11), a welding frame (14) placed on the inner wall of the placement frame (13), 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), a sliding block (22) slidably connected to the inner wall of the arc track (21), a support frame (23) fixedly connected to the top of the sliding block (22), a mounting rod (24) rotatably connected to the inner wall of the support frame (23), a welding rod (26) slidably connected to the inner wall of the mounting rod (24), a driving gear (25) fixedly connected to the side wall of the mounting rod (24), and a limiting assembly (4) fixedly connected to the side wall of the sliding block (22); A control mechanism (3), the control mechanism (3) comprising 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), the side wall of the driving wheel (32) is fixedly connected to a support column (33), the bottom of the motor (34) is rotatably connected to a roller (35), 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), and the side wall of the slide rail (37) is fixedly connected to a driving gear rod (38).

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 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).

4. The rear axle tube welding machine for electric tricycle according to claim 3, characterized in that: The limiting assembly (4) also includes a fixing frame (44) fixedly connected to the side wall of the L-shaped slide rail (41), a connecting rod (45) being fixedly connected to the top of the fixing frame (44), a side wall of the driving gear rod (38) being meshingly connected to the side wall of the driving gear (25), and an inner wall of the slide rail (37) being slidably connected to an outer wall of the support column (33).

5. The rear axle tube welding machine for electric tricycle according to claim 4, characterized in that: 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) is fixedly connected to the inner wall of the clamping block (46); and a welding strip (48) is slidably connected to the inner wall of the clamping block (46).

6. The rear axle tube welding machine for electric tricycle according to claim 5, characterized in that: The feeding assembly (5) comprises a pressure plate (51) slidably connected to the inner wall of the L-shaped slide rail (41), a gear rod 1 (52) is fixedly connected to the side wall of the pressure plate (51), gears (53) are slidably connected to the inner walls of the through holes on both sides of the L-shaped slide rail (41), a gear rod 2 (54) is rotatably connected to the inner wall of the L-shaped slide rail (41), the side wall of the gear rod 2 (54) is meshingly connected to the side wall of the gear (53), the side wall of the gear rod 2 (54) is meshingly connected to the side of the gear rod 1 (52), and 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).

7. The rear axle tube welding machine for electric tricycle according to claim 6, characterized in that: The feed assembly (5) comprises a mounting bracket (56) fixedly connected to the side wall of the gear (53); a prying plate (57) is rotatably connected to the inner wall of the mounting bracket (56); a vortex spring (58) is fixedly connected to the side wall of the prying plate (57); 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).

8. A method for using a rear axle tube welding machine for an electric tricycle, using the device for welding rear axle tubes as claimed in claim 7, 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 the 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). 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 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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