A lower connecting assembly welding tool for a motorcycle engine

Abstract

The present application relates to the technical field of motorcycle welding tooling, and discloses a lower connecting assembly welding tooling of a motorcycle engine, wherein the welding tooling body comprises a first positioning mechanism and a second positioning mechanism for positioning the connecting assembly, a clamping mechanism for clamping the connecting assembly, a fastening mechanism for fastening and limiting, a base supporting mechanism for supporting the connecting assembly, and a welding auxiliary mechanism for welding. The clamping block in the clamping mechanism clamps and fixes the lower connecting assembly, thereby ensuring the fixation of the lower connecting assembly. The locking frame in the locking mechanism fixes and limits the side surface of the connecting assembly, thereby ensuring the stability of the clamping of the connecting assembly. Through the cooperation of the first positioning mechanism, the clamping mechanism and the locking mechanism, the clamping is more stable. Meanwhile, the fixing actions of the three sets of clamping mechanisms are synchronous, thereby avoiding the problem that the existing connecting assembly clamp needs to be fixed one by one, thereby leading to low efficiency.

Description

Technical Field

[0001] This invention relates to the field of motorcycle welding fixtures, and more particularly to a welding fixture for the lower connection assembly of a motorcycle engine. Background Technology

[0002] The motorcycle engine lower connection assembly is located in the lower middle part of the motorcycle frame and mainly consists of the front footrest connection tube, the front right footrest mounting bracket, the main bracket mounting plate, the front left footrest mounting bracket, and two engine lower connection plates. The front right footrest mounting bracket, the main bracket mounting plate, the front left footrest mounting bracket, and the two engine lower connection plates are welded to the front footrest connection tube by electric welding.

[0003] Existing tooling uses multiple locating pins and quick-clamping devices to position and clamp the lower connection assembly of a motorcycle engine. However, this method is cumbersome, requiring each clamp to be fixed individually, resulting in low efficiency. Furthermore, due to inconsistent clamping forces, the positioning accuracy of the lower connection assembly is limited, posing a risk of incomplete or unstable clamping. Additionally, impurities often remain on the tooling surface during welding, affecting weld quality. Current methods typically involve manual pre-cleaning of the tooling, which is time-consuming and labor-intensive. Therefore, we propose a welding tooling for the lower connection assembly of a motorcycle engine. Summary of the Invention

[0004] To address the technical problem of inconsistent clamping forces among various fixtures, limited positional accuracy of the lower connecting assembly, and the risk of incomplete or unstable clamping, this invention provides a welding fixture for the lower connecting assembly of a motorcycle engine.

[0005] The present invention is achieved by the following technical solution: a welding fixture for a lower connection assembly of a motorcycle engine, comprising a welding fixture body, the welding fixture body comprising a first positioning mechanism and a second positioning mechanism for positioning the connection assembly, a clamping mechanism for clamping the connection assembly, a fastening mechanism for fastening and limiting, a base support mechanism for supporting the connection assembly, and a welding auxiliary mechanism for welding.

[0006] The first positioning mechanism includes a working motor, with a rotating rod connected to the top of the working motor; a connecting screw is connected to the top of the handle, and a first limiting block and a second limiting block are sleeved on the surface of the connecting screw; a first connecting plate is installed above the first limiting block, and a first positioning rod is connected above the first connecting plate.

[0007] A second connecting plate is connected above the second limiting block, and a second positioning rod is installed at the top of the second connecting plate.

[0008] The lower connection assembly of the motorcycle engine is placed between the clamping mechanism and the fastening mechanism. The bottom end of the lower connection assembly is locked in the limiting slot. The operator rotates the handle, which drives the connecting screw connected to it to rotate. The surface of the connecting screw is fitted with a first limiting block and a second limiting block. The threads of the first limiting block and the second limiting block on the connecting screw have opposite directions. As the connecting screw rotates, the first limiting block and the second limiting block move closer to each other. The first limiting block and the second limiting block then drive the first connecting plate and the second connecting plate connected to them to move closer together synchronously. The first positioning rod and the second positioning rod connected to the first connecting plate and the second connecting plate then move closer together synchronously. The first positioning rod and the second positioning rod then fix and clamp the lower connection assembly.

[0009] The clamping mechanism includes a connecting rod, one end of which is connected to a receiving part, and the other end of which is connected to a mounting bracket. Both ends of the mounting bracket are equipped with moving handles, and the bottom end of the moving handles is provided with a moving deflection part. The outside of the moving deflection part is connected to a clamping block for fixing the connecting assembly.

[0010] As the connecting screw rotates, the receiving movable sleeve fitted on the surface of the connecting screw moves synchronously. The receiving movable sleeve then moves on the surface of the connecting screw, which in turn drives the connecting rod connected to it to move synchronously. The connecting rod then drives the receiving part connected to it to move synchronously. The receiving part then drives the mounting bracket connected to it to move synchronously. The mounting bracket then drives the moving handle connected to it to move synchronously. The moving handle then deflects, which drives the moving deflection part to deflect. The moving deflection part drives the clamping block to deflect synchronously. The clamping block then clamps and fixes the lower connecting assembly, ensuring the fixation of the lower connecting assembly.

[0011] The fastening mechanism includes a moving rod, which is installed below the mounting frame. One end of the moving rod is connected to the inner side of the moving rod, and the other end of the moving frame is connected to a connecting handle. The bottom end of the connecting handle is connected to a mounting component block, and the top end of the mounting component block is connected to a component rod. A component sleeve is fitted onto the surface of the component rod.

[0012] The receiving rod on the locking mechanism is connected to the connecting rod. The receiving plate is connected to the top of the component rod. The outer side of the receiving plate is connected to the first motion adjustment part. The first motion adjustment part and the second motion adjustment part are connected through the deflection shaft. The outer side of the second motion adjustment part is equipped with a locking frame. The top of the locking frame is penetrated by the upper deflection shaft. The two ends of the lower deflection shaft are fixed on the mounting column and penetrate the locking frame.

[0013] The base support mechanism includes a base platform, a limit block installed at the top of the base platform, and a limit slot provided on the upper surface of the base platform.

[0014] The welding surface cleaning mechanism of the connecting assembly includes a first bevel gear, which is fixedly connected to the top surface of the connecting screw. A second bevel gear meshes with the outer surface of the first bevel gear. A connecting rod passes through the second bevel gear, and a third bevel gear is connected to the top of the connecting rod. A fourth bevel gear meshes with the bottom of the third bevel gear. A rotating disk is connected to the bottom of the fourth bevel gear, and a rotating rod is movably connected to the bottom of the rotating disk.

[0015] One end of the connecting shaft is mounted on the surface of the rotating disk, and the other end of the connecting shaft is connected to a moving rod. The bottom end of the moving rod is inserted into a sliding groove and slides within the sliding groove. One end of a cleaning rod is connected to the outside of the moving rod, and the other end of the cleaning rod is connected to a cleaning brush for cleaning the surface of the connecting assembly. The bottom end of the connecting rod is supported by a mounting base.

[0016] As a further improvement to the above solution, the clamping mechanism is located between the first positioning mechanism and the second positioning mechanism, and the clamping mechanism, together with the first positioning mechanism and the second positioning mechanism, clamps and fixes the connecting assembly.

[0017] As a further improvement to the above solution, the clamping mechanism is located between the first positioning mechanism and the second positioning mechanism, and the clamping mechanism, together with the first positioning mechanism and the second positioning mechanism, clamps and fixes the connecting assembly.

[0018] As a further improvement to the above solution, as the mounting bracket moves, the mounting bracket drives the motion rod connected below it to move synchronously. The motion rod drives the movable bracket connected to it to move synchronously. The movable bracket drives the connecting handle connected to it to move. The connecting handle then drives the mounting component block connected to it to deflect. The mounting component block then drives the component rod connected to it and the locking mechanism to move synchronously. The locking mechanism pushes inward. At the same time, as the connecting rod moves, the connecting rod drives the receiving rod connected to it to move. The receiving rod pushes the locking bracket connected to it to deflect inward. The top of the locking bracket deflects around the upper deflection shaft. The upper deflection shaft drives the second motion adjustment part and the first motion adjustment part to deflect. As the locking bracket moves and deflects, the locking bracket then clamps and limits the connection assembly, ensuring the stability of the clamping of the connection assembly and facilitating the welding of the connection assembly.

[0019] As a further improvement to the above solution, the cleaning rod drives the cleaning brush to reciprocate, and the cleaning brush then cleans the surface of the connection assembly, removing impurities from the surface of the connection assembly and ensuring welding quality.

[0020] As a further improvement to the above solution, both the first positioning rod and the second positioning rod are cylindrical, and the first positioning rod and the second positioning rod clamp and fix the connecting assembly; both the first limiting block and the second limiting block are sleeved on the surface of the connecting screw, and the threads of the first limiting block and the second limiting block sleeved on the connecting screw have opposite directions.

[0021] As a further improvement to the above solution, the welding auxiliary mechanism includes a fixed platform, a platform rod fixedly installed on the top of the fixed platform, and a welding head connected to the platform rod; the platform rod is installed on a movable plate, and the bottom end of the movable plate is sleeved on a sliding component rod; the movable plate slides on the sliding component rod to adjust the welding position of the welding head, facilitating flexible welding.

[0022] Compared with the prior art, the beneficial effects of the present invention are as follows:

[0023] 1. This invention innovatively proposes a first positioning mechanism, a clamping mechanism, a fastening mechanism, and a locking mechanism. The first positioning mechanism uses a first positioning rod and a second positioning rod to clamp and fix the lower connecting assembly. The clamping mechanism uses a clamping block to clamp and fix the lower connecting assembly, ensuring its stability. The locking mechanism uses a locking frame to fix and limit the sides of the connecting assembly, ensuring the stability of the clamping. Through the cooperation of the first positioning mechanism, the clamping mechanism, and the locking mechanism, the clamping becomes more stable. Furthermore, the fixing actions of the three clamping mechanisms are synchronized, avoiding the inefficiency caused by the need for individual fixing of existing connecting assembly clamps.

[0024] 2. This invention innovatively combines the first positioning mechanism, the clamping mechanism, and the locking mechanism. While controlling the first positioning mechanism to perform the clamping operation, it simultaneously drives the clamping mechanism and the locking mechanism to perform the clamping operation, so that the clamping and fixing steps can be realized at the same time. This achieves synchronous clamping movement, making the operation more convenient. The clamping force of each clamp is kept synchronous, eliminating the need to fix each set of clamps one by one at the same time, which leads to low efficiency and inconsistent clamping force of each clamp.

[0025] 3. This invention innovatively proposes a welding surface cleaning mechanism for the connecting assembly. While controlling the first positioning mechanism to perform clamping operations, it also controls the rotation of the connecting screw, thus simultaneously realizing the synchronous operation of the welding surface cleaning mechanism for the connecting assembly. It controls the cleaning brush to clean the surface of the connecting assembly, removing impurities from the surface of the connecting assembly, avoiding welding defects caused by impurities on the surface of the connecting assembly during welding, and improving the quality of tooling welding. Attached Figure Description

[0026] Figure 1 This is a schematic diagram of the overall structure of the present invention;

[0027] Figure 2For the present invention Figure 1 Schematic diagram of the middle section of the structure;

[0028] Figure 3 This is a schematic diagram of the connection structure of the first positioning mechanism of the present invention;

[0029] Figure 4 For the present invention Figure 3 Enlarged schematic diagram of the structure of region A in the middle;

[0030] Figure 5 This is a schematic diagram of the connection structure of the clamping mechanism of the present invention;

[0031] Figure 6 For the present invention Figure 5 Schematic diagram of the middle section of the structure;

[0032] Figure 7 This is a schematic diagram of the fastening mechanism connection structure of the present invention;

[0033] Figure 8 This is a schematic diagram of the connection structure of the weld surface cleaning mechanism for the connection assembly of the present invention;

[0034] Figure 9 This is a schematic diagram of the connection structure of the locking mechanism of the present invention.

[0035] Explanation of key symbols:

[0036] 1. Welding fixture main body; 2. First positioning mechanism; 21. Working motor; 22. Rotating rod; 23. Handle; 24. Connecting screw; 241. Receiving movable sleeve; 25. First limiting block; 26. First connecting plate; 27. First positioning rod; 28. Second limiting block; 29. ​​Second connecting plate; 210. Second positioning rod; 3. Second positioning mechanism; 4. Clamping mechanism; 41. Connecting rod; 42. Receiving part; 43. Mounting frame; 44. Moving rod handle; 45. Moving deflection part; 46. Clamping block; 5. Fastening mechanism; 50. Moving rod; 51. Moving frame; 52. Connecting handle; 53. Mounting component block; 54. Component rod; 55. Component sleeve; 6. Base support mechanism; 61. Base platform; 62. Limiting block; 63. Limiting slot; 7. Welding auxiliary mechanism; 71. Fixed frame; 72. Frame rod; 73. Welding head; 74. Movable plate; 75. Sliding component rod; 8. Connecting assembly weld surface cleaning mechanism; 81. First bevel gear; 82. Second bevel gear; 83. Connecting rod; 84. Third bevel gear; 85. Fourth bevel gear; 86. Rotating disc; 87. Rotating rod; 88. Connecting shaft; 89. Moving rod; 810. Sliding groove; 811. Cleaning rod; 812. Cleaning brush; 813. Mounting seat; 9. Locking mechanism; 91. Receiving rod; 92. Receiving plate; 93. First motion adjustment part; 94. Second motion adjustment part; 95. Deflection shaft; 96. Locking frame; 97. Upper deflection shaft; 98. Lower deflection shaft; 99. Mounting column. Detailed Implementation

[0037] The present invention will now be further described in conjunction with the accompanying drawings and specific embodiments. It should be noted that, without conflict, the various embodiments or technical features described below can be arbitrarily combined to form new embodiments.

[0038] Example 1:

[0039] Please combine Figures 3-7 This embodiment proposes a welding fixture for the lower connection assembly of a motorcycle engine, including a welding fixture body 1. The welding fixture body 1 includes a first positioning mechanism 2 and a second positioning mechanism 3 for positioning the connection assembly, a clamping mechanism 4 for clamping the connection assembly, a fastening mechanism 5 for fastening and limiting, a base support mechanism 6 for supporting the connection assembly, a welding auxiliary mechanism 7 for welding, a connection assembly weld surface cleaning mechanism 8 for cleaning the surface of the connection assembly, and a locking mechanism 9 for limiting.

[0040] It should be noted that the clamping mechanism 4 is located between the first positioning mechanism 2 and the second positioning mechanism 3, and the clamping mechanism 4, together with the first positioning mechanism 2 and the second positioning mechanism 3, clamps and fixes the connecting assembly.

[0041] The clamping mechanism 4 includes a connecting rod 41, one end of a receiving part 42 is connected to the outside of the connecting rod 41, the other end of the receiving part 42 is connected to a mounting bracket 43, both ends of the mounting bracket 43 are equipped with a moving handle 44, the bottom end of the moving handle 44 is provided with a moving deflection part 45, and the outside of the moving deflection part 45 is connected to a clamping block 46 for fixing the connecting assembly.

[0042] It should be noted that the connecting rod 41 is connected to the connecting screw 24, and the connection between the connecting rod 41 and the connecting screw 24 is connected by a receiving movable sleeve 241. The movement of the receiving movable sleeve 241 drives the connecting rod 41 to move.

[0043] More specifically, by rotating the connecting screw 24, the receiving movable sleeve 241 sleeved on the surface of the connecting screw 24 moves synchronously. The receiving movable sleeve 241 then moves on the surface of the connecting screw 24, which in turn drives the connecting rod 41 connected to it to move synchronously. The connecting rod 41 then drives the receiving part 42 connected to it to move synchronously. The receiving part 42 then drives the mounting bracket 43 connected to it to move synchronously. The mounting bracket 43 then drives the moving rod handle 44 connected to it to move synchronously. The moving rod handle 44 then deflects, which drives the moving deflection part 45 to deflect. The moving deflection part 45 drives the clamping block 46 to deflect synchronously. The clamping block 46 then clamps and fixes the lower connecting assembly, ensuring the fixation of the lower connecting assembly.

[0044] The fastening mechanism 5 includes a moving rod 50, which is installed below the mounting bracket 43. One end of a movable bracket 51 is connected to the inner side of the moving rod 50, and the other end of the movable bracket 51 is connected to a connecting handle 52. The bottom end of the connecting handle 52 is connected to a mounting component block 53, and the top end of the mounting component block 53 is connected to a component rod 54. A component sleeve 55 is fitted onto the surface of the component rod 54.

[0045] The receiving rod 91 on the locking mechanism 9 is connected to the connecting rod 41. The receiving plate 92 is connected to the top of the component rod 54. The outer side of the receiving plate 92 is connected to the first motion adjustment part 93. The first motion adjustment part 93 and the second motion adjustment part 94 are connected through the deflection shaft 95. The outer side of the second motion adjustment part 94 is equipped with a locking frame 96. The top of the locking frame 96 is penetrated by the upper deflection shaft 97. The two ends of the lower deflection shaft 98 are fixed on the mounting column 99 and penetrate the locking frame 96.

[0046] It should be noted that the welding auxiliary mechanism 7 includes a fixed frame 71, a frame rod 72 is fixedly installed on the top of the fixed frame 71, and a welding head 73 is connected to the frame rod 72; the frame rod 72 is installed on the movable plate 74, and the bottom end of the movable plate 74 is sleeved on the sliding component rod 75.

[0047] More specifically, as the mounting bracket 43 moves, the mounting bracket 43 drives the motion rod 50 connected below it to move synchronously. The motion rod 50 drives the movable bracket 51 connected to it to move synchronously. The movable bracket 51 drives the connecting handle 52 connected to it to move. The connecting handle 52 then drives the mounting component block 53 connected to it to deflect. The mounting component block 53 then drives the component rod 54 connected to it and the locking mechanism 9 to move synchronously. The locking mechanism 9 pushes inward. At the same time, as the connecting rod 41 moves, the connecting rod 41 drives the connected component rod 54 to move synchronously. The receiving rod 91 moves inward, pushing the connecting locking frame 96 to deflect. The top of the locking frame 96 deflects around the upper deflection shaft 97, which drives the second motion adjustment part 94 and the first motion adjustment part 93 to deflect. As the locking frame 96 deflects, it then clamps and limits the connection assembly, ensuring the stability of the connection assembly and facilitating welding. The movable plate 74 slides on the sliding component rod 75 to adjust the welding position of the welding head 73, facilitating flexible welding.

[0048] Example 2:

[0049] Please combine Figures 1-2 In this embodiment, a first positioning mechanism 2 is proposed to fix the connecting assembly. The first positioning mechanism 2 includes a working motor 21, and a rotating rod 22 is connected to the top of the working motor 21. A connecting screw 24 is connected to the top of the handle 23. A first limiting block 25 and a second limiting block 28 are sleeved on the surface of the connecting screw 24. A first connecting plate 26 is installed above the first limiting block 25. A first positioning rod 27 is connected above the first connecting plate 26.

[0050] A second connecting plate 29 is connected above the second limiting block 28, and a second positioning rod 210 is installed at the top of the second connecting plate 29.

[0051] More specifically, the lower connection assembly of the motorcycle engine is placed between the clamping mechanism 4 and the fastening mechanism 5. The bottom end of the lower connection assembly is locked in the limiting slot 63. The operator rotates the handle 23, which drives the connecting screw 24 connected to it to rotate. The surface of the connecting screw 24 is fitted with a first limiting block 25 and a second limiting block 28. The threads of the first limiting block 25 and the second limiting block 28 on the connecting screw 24 have opposite directions. As the connecting screw 24 rotates, the first limiting block 25 and the second limiting block 28 move closer to each other. The first limiting block 25 and the second limiting block 28 then drive the first connecting plate 26 and the second connecting plate 29 connected to them to move closer together synchronously. The first positioning rod 27 and the second positioning rod 210 connected to the first connecting plate 26 and the second connecting plate 29 then move closer together synchronously. The first positioning rod 27 and the second positioning rod 210 then fix and clamp the lower connection assembly.

[0052] Furthermore, the base support mechanism 6 includes a base platform 61, a limit block 62 is installed at the top of the base platform 61, and a limit slot 63 is provided on the upper surface of the base platform 61.

[0053] It should be noted that both the first positioning rod 27 and the second positioning rod 210 are cylindrical, and the first positioning rod 27 and the second positioning rod 210 clamp and fix the connecting assembly; the first limiting block 25 and the second limiting block 28 are both sleeved on the surface of the connecting screw 24, and the threads of the first limiting block 25 and the second limiting block 28 on the connecting screw 24 have opposite directions.

[0054] Example 3:

[0055] Please combine Figure 8 This embodiment proposes a welding surface cleaning mechanism 8 for connecting assemblies, which can clean the surface of the connecting assemblies under the motorcycle engine, remove impurities from the surface of the connecting assemblies, and ensure welding quality. The welding surface cleaning mechanism 8 for connecting assemblies includes a first bevel gear 81, which is fixedly connected to the top surface of the connecting screw 24. A second bevel gear 82 meshes with the outer surface of the first bevel gear 81. A connecting rod 83 passes through the second bevel gear 82. A third bevel gear 84 is connected to the top of the connecting rod 83. A fourth bevel gear 85 meshes with the bottom of the third bevel gear 84.

[0056] The bottom end of the fourth bevel gear 85 is connected to a rotating disk 86, and the bottom end of the rotating disk 86 is movably connected to a rotating rod 87;

[0057] One end of the connecting shaft 88 is mounted on the surface of the rotating disk 86, and the other end of the connecting shaft 88 is connected to a moving rod 89. The bottom end of the moving rod 89 is inserted into the sliding groove 810 and slides within the sliding groove 810. One end of the cleaning rod 811 is connected to the outside of the moving rod 89, and the other end of the cleaning rod 811 is connected to a cleaning brush 812 for cleaning the surface of the connecting assembly. The bottom end of the connecting rod 83 is supported by the mounting base 813.

[0058] More specifically, by rotating the connecting screw 24, the first bevel gear 81 connected to the top of the connecting screw 24 rotates synchronously. The first bevel gear 81 drives the second bevel gear 82, which meshes with it, to rotate synchronously. The connecting rod 83, which passes through the inner side of the second bevel gear 82, rotates synchronously. The third bevel gear 84, connected to the top of the connecting rod 83, rotates synchronously. The third bevel gear 84 then drives the fourth bevel gear 85, which meshes below it, to rotate synchronously. As the fourth bevel gear 85 rotates, the rotating disk 86 connected below the fourth bevel gear 85 rotates synchronously. The rotating disk 86 drives the connecting shaft 88 to move synchronously. The connecting shaft 88 deflects, and the moving rod 89 connected to the other end of the connecting shaft 88 is driven to slide in the sliding groove 810. The moving rod 89 then drives the cleaning rod 811 to adjust its movement. The cleaning rod 811 drives the cleaning brush 812 to reciprocate. The cleaning brush 812 then cleans the surface of the connecting assembly, removing impurities from the surface of the connecting assembly and ensuring welding quality.

[0059] Specific implementation steps of the overall technical solution of this invention:

[0060] In use, the lower connection assembly of the motorcycle engine is placed between the clamping mechanism 4 and the fastening mechanism 5. The bottom end of the lower connection assembly is locked in the limiting slot 63. The operator rotates the handle 23, which drives the connecting screw 24 connected to it to rotate. The surface of the connecting screw 24 is fitted with a first limiting block 25 and a second limiting block 28. The threads of the first limiting block 25 and the second limiting block 28 on the connecting screw 24 have opposite directions. As the connecting screw 24 rotates, the first limiting block 25 and the second limiting block 28 move closer to each other. The first limiting block 25 and the second limiting block 28 then drive the first connecting plate 26 and the second connecting plate 29 connected to them to move closer together synchronously. The first positioning rod 27 and the second positioning rod 210 connected to the first connecting plate 26 and the second connecting plate 29 then move closer together synchronously. The first positioning rod 27 and the second positioning rod 210 then fix and clamp the lower connection assembly.

[0061] Simultaneously, as the connecting screw 24 rotates, the receiving movable sleeve 241 sleeved on the surface of the connecting screw 24 moves synchronously. The receiving movable sleeve 241 then moves on the surface of the connecting screw 24, which in turn drives the connecting rod 41 connected to it to move synchronously. The connecting rod 41 then drives the receiving part 42 connected to it to move synchronously. The receiving part 42 then drives the mounting bracket 43 connected to it to move synchronously. The mounting bracket 43 then drives the moving rod handle 44 connected to it to move synchronously. The moving rod handle 44 then deflects, which drives the moving deflection part 45 to deflect. The moving deflection part 45 drives the clamping block 46 to deflect synchronously. The clamping block 46 then clamps and fixes the lower connecting assembly, ensuring the fixation of the lower connecting assembly.

[0062] Simultaneously, as the mounting bracket 43 moves, the mounting bracket 43 drives the moving rod 50 connected below it to move synchronously. The moving rod 50 drives the moving bracket 51 connected to it to move synchronously. The moving bracket 51 drives the connecting handle 52 connected to it to move. The connecting handle 52 then drives the mounting component block 53 connected to it to deflect. The mounting component block 53 then drives the component rod 54 connected to it and the locking mechanism 9 to move synchronously. The locking mechanism 9 pushes inward. At the same time, as the connecting rod 41 moves, the connecting rod 41 drives the connected component rod 54 to move synchronously. The receiving rod 91 moves inward, pushing the connecting locking frame 96 to deflect. The top of the locking frame 96 deflects around the upper deflection shaft 97, which drives the second motion adjustment part 94 and the first motion adjustment part 93 to deflect. As the locking frame 96 deflects, it then clamps and limits the connection assembly, ensuring the stability of the connection assembly and facilitating welding. The movable plate 74 slides on the sliding component rod 75 to adjust the welding position of the welding head 73, facilitating flexible welding.

[0063] Simultaneously, as the connecting screw 24 rotates, the first bevel gear 81 connected to the top of the connecting screw 24 rotates synchronously. The first bevel gear 81 drives the second bevel gear 82, which meshes with it, to rotate synchronously. The connecting rod 83, which passes through the inner side of the second bevel gear 82, rotates synchronously. The third bevel gear 84, connected to the top of the connecting rod 83, rotates synchronously. The third bevel gear 84 then drives the fourth bevel gear 85, which meshes below it, to rotate synchronously. As the fourth bevel gear 85 rotates, the rotating disk 86 connected below it rotates synchronously. The rotating disk 86 drives the connecting shaft 88 to move synchronously. The connecting shaft 88 deflects, and the moving rod 89 connected to the other end of the connecting shaft 88 is driven to slide in the sliding groove 810. The moving rod 89 then drives the cleaning rod 811 to adjust its movement. The cleaning rod 811 drives the cleaning brush 812 to reciprocate. The cleaning brush 812 then cleans the surface of the connecting assembly, removing impurities from the surface of the connecting assembly and ensuring welding quality.

[0064] The above embodiments are merely preferred embodiments of the present invention and should not be construed as limiting the scope of protection of the present invention. Any non-substantial changes and substitutions made by those skilled in the art based on the present invention shall fall within the scope of protection claimed by the present invention.

Claims

1. A welding fixture for the lower connection assembly of a motorcycle engine, comprising a welding fixture body (1), characterized in that, The welding fixture body (1) includes a first positioning mechanism (2) and a second positioning mechanism (3) for positioning the connecting assembly, a clamping mechanism (4) for clamping the connecting assembly, a fastening mechanism (5) for fastening and limiting, a base support mechanism (6) for supporting the connecting assembly, a welding auxiliary mechanism (7) for welding, a connecting assembly weld surface cleaning mechanism (8) for cleaning the surface of the connecting assembly, and a locking mechanism (9) for limiting. The clamping mechanism (4) includes a connecting rod (41), one end of a receiving part (42) is connected to the outside of the connecting rod (41), the other end of the receiving part (42) is connected to a mounting bracket (43), both ends of the mounting bracket (43) are equipped with moving rod handles (44), the bottom end of the moving rod handles (44) is provided with a moving deflection part (45), and the outside of the moving deflection part (45) is connected to a clamping block (46) for fixing the connecting assembly. The first positioning mechanism (2) includes a working motor (21), and a rotating rod (22) is connected to the top of the working motor (21). The top of the handle (23) is connected to a connecting screw (24), and a first limiting block (25) and a second limiting block (28) are sleeved on the surface of the connecting screw (24). A first connecting plate (26) is installed above the first limiting block (25), and a first positioning rod (27) is connected above the first connecting plate (26). A second connecting plate (29) is connected above the second limiting block (28), and a second positioning rod (210) is installed at the top of the second connecting plate (29). Both the first positioning rod (27) and the second positioning rod (210) are cylindrical, and the first positioning rod (27) and the second positioning rod (210) clamp and fix the connecting assembly; The first limiting block (25) and the second limiting block (28) are both sleeved on the surface of the connecting screw (24), and the threads of the first limiting block (25) and the second limiting block (28) sleeved on the connecting screw (24) have opposite directions; The connecting rod (41) is connected to the connecting screw (24), and the connection between the connecting rod (41) and the connecting screw (24) is connected by a receiving movable sleeve (241). The movement of the receiving movable sleeve (241) drives the connecting rod (41) to move. The fastening mechanism (5) includes a moving rod (50) which is installed below the mounting bracket (43). The inner side of the moving rod (50) is connected to one end of a movable bracket (51), and the other end of the movable bracket (51) is connected to a connecting handle (52). The bottom end of the connecting handle (52) is connected to a mounting component block (53), and the top end of the mounting component block (53) is connected to a component rod (54). A component sleeve (55) is fitted onto the surface of the component rod (54).

2. The welding fixture for the lower connection assembly of a motorcycle engine as described in claim 1, characterized in that, The clamping mechanism (4) is located between the first positioning mechanism (2) and the second positioning mechanism (3), and the clamping mechanism (4), together with the first positioning mechanism (2) and the second positioning mechanism (3), clamps and fixes the connecting assembly.

3. The welding fixture for the lower connection assembly of a motorcycle engine as described in claim 1, characterized in that, The base support mechanism (6) includes a base platform (61), a limit block (62) is installed at the top of the base platform (61), and a limit slot (63) is provided on the upper surface of the base platform (61).

4. The welding fixture for the lower connection assembly of a motorcycle engine as described in claim 1, characterized in that, The welding auxiliary mechanism (7) includes a fixed frame (71), a frame rod (72) is fixedly installed on the top of the fixed frame (71), and a welding head (73) is connected to the frame rod (72). The frame rod (72) is mounted on the movable plate (74), and the bottom end of the movable plate (74) is sleeved on the sliding component rod (75).

5. The welding fixture for the lower connection assembly of a motorcycle engine as described in claim 1, characterized in that, The welding surface cleaning mechanism (8) of the connecting assembly includes a first bevel gear (81), which is fixedly connected to the top surface of the connecting screw (24). The outer surface of the first bevel gear (81) is meshed with a second bevel gear (82). A connecting rod (83) passes through the second bevel gear (82). The top end of the connecting rod (83) is connected to a third bevel gear (84), and the bottom end of the third bevel gear (84) is meshed with a fourth bevel gear (85). The bottom end of the fourth bevel gear (85) is connected to a rotating disk (86), and the bottom end of the rotating disk (86) is movably connected to a rotating rod (87). One end of the connecting shaft (88) is mounted on the surface of the rotating disk (86), and the other end of the connecting shaft (88) is connected to a moving rod (89). The bottom end of the moving rod (89) is inserted into the sliding groove (810) and slides in the sliding groove (810). The outer side of the moving rod (89) is connected to one end of a cleaning rod (811), and the other end of the cleaning rod (811) is connected to a cleaning brush (812) for cleaning the surface of the connecting assembly. The bottom end of the connecting rod (83) is supported by a mounting base (813).

6. The welding fixture for the lower connection assembly of a motorcycle engine as described in claim 1, characterized in that, The receiving rod (91) on the locking mechanism (9) is connected to the connecting rod (41), and the receiving plate (92) is connected to the top of the component rod (54). The outer side of the receiving plate (92) is connected to the first motion adjustment part (93). The first motion adjustment part (93) and the second motion adjustment part (94) are connected through the deflection shaft (95). The outer side of the second motion adjustment part (94) is equipped with a locking frame (96). The top of the locking frame (96) is penetrated by the upper deflection shaft (97), and the two ends of the lower deflection shaft (98) are fixed on the mounting column (99) and penetrate the locking frame (96).

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