High-strength welding tool for pulling-rod and beam

Abstract

The application relates to a high-strength welding tool for a pull-shoulder buffer pull beam, and relates to the technical field of welding tools. The tool comprises a frame, a supporting mechanism is arranged in the frame, the supporting mechanism is in contact with the bottom wall of a welding backing plate, the supporting mechanism is used for supporting the welding backing plate, a plurality of pressing blocks are arranged on the two sides of the length direction of the frame, the pressing blocks are in contact with the top wall of a workpiece, the pressing blocks are used for pressing the workpiece on the welding backing plate, a moving assembly is arranged on the frame, the moving assembly is connected with the pressing blocks, the moving assembly is driven by a driving assembly, and the moving assembly is used for driving the pressing blocks to move towards the direction of approaching or moving away from the workpiece. The application has the effect that the workpiece and the welding backing plate are positioned and clamped, and the operation is more convenient.

Description

Technical Field

[0001] This application relates to the field of welding fixtures, and in particular to a high-strength welding fixture for a traction beam. Background Technology

[0002] Welding fixtures are a set of flexible clamps for fixing, clamping, and positioning during welding. They are mainly used for welding various weldable materials, including large, medium, and small materials. In the process of manufacturing steel module traction beams for rail vehicles, steel modules need to be welded. During welding, welding fixtures are used to clamp the components to facilitate worker operation.

[0003] In related technologies, Chinese patent CN214291705U discloses a welding fixture for a traction beam assembly of a rail vehicle, including a frame, a workpiece clamping assembly and a welding pad clamping assembly disposed on the frame; the workpiece clamping assembly is used to clamp and fix the workpiece, and it includes a cantilever clamping mechanism and a support assembly, which are arranged in a one-to-one correspondence; the welding pad clamping assembly is used to clamp the welding pad at the weld seam on the back of the workpiece, and it includes a welding pad pressing mechanism.

[0004] In use, the welding pad is first placed on the support assembly. Then, the welding pad clamping mechanism is used to fix the welding pad in the frame. Next, the workpiece is placed in the frame and on the welding pad. Then, the cantilever clamping mechanism is used to press the workpiece against the welding pad, that is, the welding pad is clamped at the weld seam on the back of the workpiece, thereby fixing the relative position of the workpiece and the welding pad, thus meeting the welding process requirements of the workpiece.

[0005] However, when using the cantilever clamping mechanism to lower and clamp the workpiece, it is necessary to move several cantilever clamping mechanisms in sequence, which makes the operation inconvenient and needs to be improved. Summary of the Invention

[0006] To address the inconvenience caused by the need to sequentially move several cantilever clamping mechanisms when positioning the workpiece and welding pad, this application provides a high-strength welding fixture for a traction beam with a traction pillow.

[0007] The high-strength welding fixture for a traction beam provided in this application adopts the following technical solution:

[0008] A high-strength welding fixture for traction beams and traction pads, used to weld workpieces and welding backing plates, comprising:

[0009] A frame for accommodating the welding pad and the workpiece;

[0010] A support mechanism is provided on the frame, and the support mechanism is in contact with the bottom wall of the welding pad to support the welding pad;

[0011] Several pressing blocks are disposed on both sides of the frame along its length. The pressing blocks are in contact with the top wall of the workpiece and are used to press the workpiece onto the welding pad.

[0012] A movable component is disposed on the frame and connected to the pressing block. The movable component is driven by a drive component to move the pressing block toward or away from the workpiece.

[0013] By adopting the above technical solution, during use, the welding pad is first placed on the support mechanism, at which point the welding pad is positioned within the frame. Next, the workpiece is placed within the frame, positioned above the welding pad. The positions of the workpiece and the welding pad are adjusted so that the welding pad aligns with the welding seam on the back of the workpiece. Then, the drive assembly is activated, driving the moving assembly to simultaneously move several pressing blocks downwards until the pressing blocks abut against the bottom wall of the workpiece. At this point, the pressing blocks apply downward pressure to the workpiece, while the support mechanism applies upward support force to the welding pad. This creates a relative force between the pressing blocks and the support mechanism, firmly pressing the welding pad against the weld seam on the back of the workpiece, thus fixing the relative position of the workpiece and the welding pad and meeting the welding process requirements. In this process, there is no need to move the pressing blocks downwards sequentially; the moving assembly can simultaneously press several pressing blocks against the workpiece, making operation convenient and improving work efficiency.

[0014] Optionally, the moving component includes:

[0015] A plurality of movable rods are provided, the movable rods being vertically arranged, each of the movable rods corresponding to a pressing block, the movable rods being connected to the pressing blocks via connectors, the pressing blocks being slidably connected to the frame, and the movable rods moving vertically to drive the pressing blocks to move on the frame toward or away from the workpiece;

[0016] A number of worm gears are rotatably connected to the frame, and each of the worm gears corresponds to a moving rod. The worm gears are coaxially sleeved on the moving rods, and the worm gears are threadedly connected to the moving rods.

[0017] Two worm gears are respectively distributed on both sides of the frame along its length. The worm gears are rotatably connected to the frame and can rotate about their central axis. The worm wheel meshes with the worm gear and the worm gear is connected to the drive assembly.

[0018] By adopting the above technical solution, during installation, the drive assembly drives the worm gear to rotate around its central axis, causing several worm wheels to rotate simultaneously. The worm wheels are threadedly connected to the moving rod, which in turn moves the moving rod along the central axis of the worm wheels, driving the pressing blocks to move closer to the workpiece. This allows several pressing blocks to move simultaneously. When the pressing blocks reach the workpiece, they immediately clamp the workpiece. Compared to moving several pressing blocks sequentially, which results in gradual stabilization of the workpiece, this method offers better stability and is more convenient.

[0019] Optionally, the connector includes:

[0020] A connecting rod is coaxially fixed to the top of the moving rod, and the pressing block can be sleeved on the connecting rod and contact the top wall of the moving rod;

[0021] A connecting block is sleeved on the end of the connecting rod away from the moving rod. The connecting block is threaded to the top end of the moving rod. The bottom wall of the connecting block can contact the pressing block. A vertically arranged sliding rod is fixed on the side wall of the pressing block. A sliding hole is provided on the frame. The sliding rod is adapted to be inserted into the sliding hole and can move up and down in the sliding hole.

[0022] By adopting the above technical solution, during installation, the pressing block is fitted onto the connecting rod, and the sliding rod is aligned with the sliding hole. This ensures that as the pressing block is fitted onto the connecting rod, the sliding rod is inserted into the sliding hole until the pressing block abuts against the top wall of the moving rod. Then, the connecting block is fitted onto the connecting rod and threaded to the top of the connecting rod for fixation, thus confining the pressing block between the connecting block and the moving rod. When the moving rod rotates, it moves vertically, pushing the pressing block forward. The sliding rod abuts against its inner wall; that is, the sliding rod is confined by the sliding hole, preventing the pressing block from rotating with the moving rod. Instead, it moves vertically under the influence of the moving rod, thus achieving a firming effect on the workpiece.

[0023] The pressing block can be detached from the connecting rod, so in actual operation, the pressing block can be installed on the corresponding connecting rod according to the size of the workpiece to meet the clamping of workpieces of different sizes.

[0024] Optionally, a rubber pad is fixed on the bottom wall of the pressing block, and the rubber pad can abut against the top wall of the workpiece.

[0025] By adopting the above technical solution, when the pressing block moves to press against the workpiece, the rubber pad comes into contact with the top wall of the workpiece, and the rubber pad deforms to buffer the pressure of the pressing block, playing a protective role. This makes the top wall of the workpiece less likely to be damaged by pressure, thus extending the service life of the workpiece.

[0026] Optionally, the driving component includes:

[0027] A rotating gear is rotatably connected to a frame. The rotating gear is driven by a motor, which is mounted on the frame. The output end of the motor is coaxially fixed with the rotating gear and is used to drive the rotating gear to rotate about its central axis.

[0028] Two transmission gears are rotatably connected to the frame. The rotating gear is located between the two transmission gears and meshes with the rotating gear. The two transmission gears correspond one-to-one with the worm gears, and the transmission gears and their corresponding worm gears are coaxially fixed.

[0029] By adopting the above technical solution, the motor is started, driving the rotating gear to rotate, so that the two transmission gears rotate synchronously, that is, the two worms in the length direction of the frame rotate simultaneously, thereby driving several worm wheels to rotate, causing several moving rods to drive all the pressing blocks to move down simultaneously, so that several pressing blocks simultaneously abut against the workpiece, thereby achieving immediate clamping of the workpiece, which is convenient to operate and has better stability.

[0030] Optionally, the support mechanism is provided on both sides of the frame along its length, and the support mechanism includes:

[0031] A plurality of support blocks are provided, each of which corresponds to a pressing block, and the support blocks are located directly below the pressing blocks. The support blocks are connected to the frame via support springs, one end of which is connected to the frame and the other end of which is connected to the support blocks. The support springs are used to push the support blocks upward.

[0032] A limiting component is disposed on the frame, and the limiting component abuts against the support block to restrict the movement of the support block.

[0033] By adopting the above technical solution, when the welding pad is placed on the support block, the support spring applies an upward pushing force to the support block, thereby increasing the resisting force of the support block on the welding pad. When the workpiece is placed on the welding pad, the welding pad and the workpiece are pressed more tightly together. After the welding pad and the workpiece are placed, several support blocks are fixed by limiting components, making the support blocks unable to move and reducing the possibility of the workpiece and the welding pad shaking during the welding process.

[0034] Optionally, the limiting component includes:

[0035] A transmission belt is provided on the frame. The transmission belt includes a driving wheel, a driven wheel, and a conveyor belt. The driving wheel and the driven wheel are rotatably connected to the frame. The conveyor belt is arranged along the length of the frame and is sleeved on the driving wheel and the driven wheel. The driving wheel rotates to drive the conveyor belt to move and the driven wheel to rotate.

[0036] Several limiting plates are fixed to one side of the conveyor belt, and each of the limiting plates corresponds to one of the support blocks.

[0037] Several abutment plates are fixed on the other side of the conveyor belt. Each of the abutment plates corresponds to a limiting plate. The support block is located between adjacent limiting plates and abutment plates. The conveyor belt moves to drive adjacent limiting plates and abutment plates to move closer or further apart.

[0038] By adopting the above technical solution, after the workpiece and welding pad are placed, the drive wheel rotates, causing the conveyor belt to move. The driven wheel also rotates synchronously. When the conveyor belt moves, the two sides of the conveyor belt move in opposite directions along its length, causing the limiting plates and abutment plates located on both sides of the support block to move closer and closer until the limiting plates and abutment plates abut against the support block. At this time, the limiting plates and abutment plates simultaneously apply a squeezing force to the support block, thereby clamping and fixing the support block between the limiting plates and the support block, thus fixing the position of the support block.

[0039] Optionally, a number of anti-slip strips are fixed on the side wall of the support block, and a serrated surface is provided on the side of the adjacent limiting plate and the abutment plate that are close to each other, and the serrated surface can abut against the anti-slip strips.

[0040] By adopting the above technical solution, after the workpiece and welding pad are placed, the drive conveyor belt moves, causing the limiting plates and abutment plates on both sides of the support block to move closer to each other until the opposite side of the limiting plates and abutment plates abuts against the support block. The serrated surfaces on the limiting plates and abutment plates abut against the anti-slip strips, increasing the roughness of the contact surfaces, thereby increasing the friction and improving the stability of the limiting plates and abutment plates in clamping and fixing the support block.

[0041] Optionally, the frame is provided with a rotating assembly, which is connected to the two driving wheels and is used to drive the two driving wheels to rotate simultaneously.

[0042] By adopting the above technical solution, after the workpiece and welding pad are placed, the rotating component drives the two drive wheels to rotate simultaneously, thereby fixing all the support blocks at the same time. This results in better coordination among the support blocks, and the two drive wheels share the same cylinder as the power source, which is more energy-efficient.

[0043] Optionally, the rotating assembly includes:

[0044] A transmission rack is slidably connected to the frame. The transmission rack is driven by a cylinder, which is located on the frame. The output end of the cylinder is fixed to the transmission rack and is used to drive the transmission rack to move along the width direction of the frame.

[0045] Two linkage gears are provided, each corresponding to a drive wheel. The linkage gears are rotatably connected to the frame and mesh with a transmission rack. A transmission bevel gear is coaxially fixed to each linkage gear, and a linkage bevel gear meshing with the transmission bevel gear is coaxially fixed to the drive wheel.

[0046] By adopting the above technical solution, the cylinder is started, which drives the transmission rack to move and drives the two linkage gears to rotate simultaneously. This drives the transmission bevel gear to rotate around the central axis of the linkage gear, thereby driving the two linkage bevel gears to drive the two drive wheels to rotate synchronously. This enables the limiting plates and abutment plates on the two conveyor belts to move simultaneously. When the support block is clamped by the limiting plates and abutment plates on both sides, the support blocks on both sides of the frame are fixed simultaneously.

[0047] In summary, this application includes at least one of the following beneficial effects:

[0048] 1. In use, first place the welding pad on the support mechanism. At this time, the welding pad is placed inside the frame. Then, place the workpiece inside the frame and above the welding pad. Adjust the position of the workpiece and the welding pad so that the welding pad is aligned with the welding area on the back of the workpiece. Then, start the drive component, which drives the moving component to move several pressing blocks down simultaneously until the pressing blocks abut against the bottom wall of the workpiece. At this time, the pressing blocks apply downward pressure to the workpiece, while the support mechanism applies upward support force to the welding pad. This creates a relative force between the pressing blocks and the support mechanism, pressing the welding pad against the weld seam on the back of the workpiece, thus fixing the relative position of the workpiece and the welding pad and meeting the welding process requirements of the workpiece.

[0049] 2. During installation, the drive assembly drives the worm gear to rotate around its central axis, causing several worm wheels to rotate simultaneously. The worm wheels are threadedly connected to the moving rod, which moves along the central axis of the worm wheels, thus moving the pressing blocks closer to the workpiece. This allows several pressing blocks to move simultaneously. When the pressing blocks reach the workpiece, they immediately clamp the workpiece. Compared to moving several pressing blocks sequentially, which results in gradual stabilization of the workpiece, this method offers better stability and is more convenient. Attached Figure Description

[0050] Figure 1 This is a schematic diagram of the high-strength welding fixture for the traction beam in an embodiment of this application;

[0051] Figure 2 This is a vertical sectional view of the high-strength welding fixture for the traction beam in an embodiment of this application;

[0052] Figure 3 for Figure 2 Enlarged view of point A in the middle;

[0053] Figure 4 A cross-sectional view of the high-strength welding fixture for the traction beam;

[0054] Figure 5 This is a schematic diagram of the support mechanism in the crossbeam;

[0055] Figure 6 for Figure 5 Enlarged view of point B in the middle.

[0056] In the diagram: 10. Frame; 11. Crossbeam; 111. Cavity; 12. Longitudinal beam; 13. Sliding hole; 20. Support mechanism; 21. Support block; 211. Anti-slip strip; 22. Support spring; 23. Limiting assembly; 231. Transmission belt; 2311. Drive wheel; 2312. Driven wheel; 2313. Conveyor belt; 232. Limiting plate; 233. Abutment plate; 30. Pressing block; 31. Connecting arm; 311. Sliding rod; 32. Pressing rod; 32. 1. Rubber pad; 40. Moving component; 41. Moving rod; 42. Worm gear; 43. Worm; 50. Connector; 51. Connecting rod; 52. Connecting block; 60. Drive component; 61. Rotating gear; 611. Motor; 62. Transmission gear; 70. Rotating component; 71. Transmission rack; 711. Cylinder; 72. Linkage gear; 721. Rotating rod; 73. Transmission bevel gear; 74. Linkage bevel gear; 80. Serrated surface; 90. Support plate. Detailed Implementation

[0057] The following is in conjunction with the appendix Figure 1-6 This application will be described in further detail.

[0058] This application discloses a high-strength welding fixture for a traction beam with a bolster. (Refer to...) Figure 1 and Figure 2 The high-strength welding fixture for the traction beam includes a horizontally placed frame 10. The frame 10 includes two oppositely arranged crossbeams 11 and two oppositely arranged longitudinal beams 12. The crossbeams 11 and longitudinal beams 12 are perpendicular to each other, and the length of the crossbeams 11 is greater than the length of the longitudinal beams 12. The two crossbeams 11 are located between the two longitudinal beams 12, and the ends of the crossbeams 11 are welded and fixed to the corresponding longitudinal beams 12. At this time, the crossbeams 11 and longitudinal beams 12 can enclose a closed square area, so that the workpiece and the connecting pad can be stored in the square area.

[0059] Reference Figure 1 and Figure 2Support mechanisms 20 are provided on both crossbeams 11. When the welding pad is placed in the frame 10, the bottom wall of the welding pad abuts against the support mechanism 20 under the action of gravity. The support mechanism 20 provides support, allowing the welding pad to be stably stored in the frame 10. The workpiece is placed above the welding pad. To fix the relative position of the workpiece and the welding pad, several pressing blocks 30 are connected to the two crossbeams 11. The workpiece is located below the pressing blocks 30. The pressing blocks 30 are evenly spaced along the length of the crossbeams 11. A moving component 40 is provided on the crossbeams 11 and is connected to the pressing blocks 30. A driving component 60 is provided on one side of the longitudinal beam 12 of the frame 10 and is connected to the two moving components 40. The driving component 60 is used to drive the moving component 40 to drive all the pressing blocks 30 to press down simultaneously and press the workpiece against the welding pad, thereby fixing the relative position of the workpiece and the welding pad for welding.

[0060] Reference Figure 3 and Figure 4 The movable component 40 includes two worm gears 43, several worm wheels 42, and several moving rods 41. The two worm gears 43 are respectively inserted into two crossbeams 11. Each crossbeam 11 has a cavity 111. The worm gears 43 are located in the cavity 111 and are arranged along the length of the crossbeam 11. The ends of the worm gears 43 are rotatably connected to the inner wall of the cavity 111, meaning that the worm gears 43 can rotate about their central axis. The worm wheels 42 are horizontally arranged and rotatably connected to the inner wall of the cavity 111. Each worm wheel 42 corresponds to a pressing block 30, and the worm wheels 42 in the same crossbeam 11 mesh with the corresponding worm gear 43. Each moving rod 41 corresponds to a worm wheel 42. The moving rod 41 vertically passes through the worm wheel 42, and the top end of the moving rod 41 extends out of the crossbeam 11. The moving rod 41 is coaxial with the worm wheel 42 and is threadedly connected to the worm wheel 42.

[0061] Reference Figure 1 and Figure 3 The pressing block 30 is connected to the moving rod 41 via a connecting member 50. The connecting member 50 includes a connecting rod 51 and a connecting block 52. The connecting rod 51 is vertically fixed to the top of the moving rod 41, and the connecting block 52 is sleeved on the top of the connecting rod 51 and threadedly connected to the top of the connecting rod 51. The pressing block 30 includes a connecting arm 31 and a pressing rod 32. One end of the connecting rod 51 is sleeved on the connecting rod 51, and the other end is fixed to the pressing rod 32. The pressing rod 32 is vertically arranged, and a rubber pad 321 is fixed to the bottom end of the pressing rod 32. A vertically arranged sliding rod 311 is integrally formed on the side wall of the connecting arm 31. A sliding hole 13 is opened on the top wall of the crossbeam 11. The sliding rod 311 is inserted into the sliding hole 13 and can move up and down in the sliding hole 13.

[0062] During installation, first, the connecting arm 31 is fitted onto the connecting rod 51, and at the same time, the sliding rod 311 is aligned with the sliding hole 13, so that when the pressing block 30 is fitted onto the connecting rod 51, the sliding rod 311 is inserted into the sliding hole 13 until the connecting arm 31 abuts against the top wall of the moving rod 41. Then, the connecting block 52 is fitted onto the connecting rod 51 and threadedly connected to the top of the connecting rod 51 for fixation, thereby restricting the connecting arm 31 between the connecting block 52 and the moving rod 41.

[0063] Reference Figure 3 and Figure 4 In use, the drive worm 43 rotates around its central axis, causing several worm wheels 42 to rotate simultaneously. The worm wheels 42 are threadedly connected to the moving rod 41, allowing the moving rod 41 to move along the central axis of the worm wheels 42. Under the constraint of the connecting block 52 and the moving rod 41, the connecting arm 31 is pushed, causing the pressing rod 32 to move synchronously, achieving simultaneous movement of several pressing rods 32. The sliding rod 311 abuts against its inner wall; that is, the sliding rod 311 is constrained by the sliding hole 13, preventing the pressing block 30 from rotating with the moving rod 41. Instead, it moves vertically under the influence of the moving rod 41. When the pressing rod 32 moves down to abut the rubber pad 321 against the workpiece, the workpiece is pressed firmly against the welding pad. This method achieves immediate pressing of the workpiece, providing better stability and convenience compared to the gradual stabilization of the workpiece caused by sequentially moving several pressing blocks 30.

[0064] Reference Figure 1 and Figure 4 The drive assembly 60 includes a rotating gear 61 and two transmission gears 62. Each transmission gear 62 corresponds to a worm gear 43. One end of each worm gear 43 extends out of the crossbeam 11 and passes through the longitudinal beam 12. A worm wheel 42 is coaxially fixed to this end of the worm gear 43. The rotating gear 61 is located between the two transmission gears 62 and meshes with them. A motor 611 is bolted to the longitudinal beam 12, and the output end of the motor 611 is coaxially fixed to the rotating gear 61. Starting the motor 611 drives the rotating gear 61 to rotate, causing the two transmission gears 62 to rotate synchronously. This means the two worm gears 43 in the length direction of the frame 10 rotate simultaneously, thereby driving several worm wheels 42 to rotate. This causes several moving rods 41 to move all the pressing blocks 30 downwards simultaneously, allowing the pressing blocks 30 to simultaneously contact the workpiece, achieving immediate clamping of the workpiece. This method is convenient to operate and offers better stability.

[0065] Reference Figure 1 and Figure 5The support mechanism 20 includes several support blocks 21 and a limiting component 23. The support blocks 21 are cylindrical and vertically placed. Guide blocks are fixed on the side walls of the support blocks 21. Guide grooves are formed vertically on the side walls of the crossbeams 11. The guide blocks are inserted into the guide grooves and can move within them. Several support blocks 21 are distributed on two crossbeams 11, and the support blocks 21 on the same crossbeam 11 are spaced apart along the length of the crossbeam 11. Each support block 21 corresponds to a pressing block 30, and the support block 21 is located directly below the corresponding pressing rod 32. A support plate 90 is fixed on one side of the two crossbeams 11 that is close to each other. The support blocks 21 are located above the support plate 90, and the support blocks 21 and the support plate 90 are connected by a support spring 22. One end of the support spring 22 is fixed to the bottom end of the support block 21, and the other end is fixed to the support plate 90. The limiting component 23 is provided on the crossbeam 11. When the limiting component 23 abuts against the support block 21, it is used to fix all the support blocks 21 on the same crossbeam 11.

[0066] Reference Figure 5 and Figure 6 The limiting component 23 includes a transmission belt 231, several limiting plates 232 and several abutment plates 233. The transmission belt 231 is disposed in the cavity 111. The transmission belt 231 includes a driving wheel 2311, a driven wheel 2312 and a conveyor belt 2313. The driving wheel 2311 and the driven wheel 2312 are rotatably connected to the inner wall of the cavity 111. The conveyor belt 2313 is arranged along the length direction of the crossbeam 11 and is sleeved on the driving wheel 2311 and the driven wheel 2312. The driving wheel 2311 rotates to drive the conveyor belt 2313 to move and the driven wheel 2312 to rotate. Several limiting plates 232 are fixed on one side of the conveyor belt 2313, and several abutting plates 233 are fixed on the other side of the conveyor belt 2313. Several limiting plates 232 and support blocks 21 correspond one-to-one, and several abutting plates 233 correspond one-to-one with limiting plates 232. Taking the support block 21 as a reference, one side of the support block 21 is the limiting plate 232, and the other side is the abutting plate 233.

[0067] After the welding pad is placed on the support block 21, the support spring 22 applies an upward pushing force to the support block 21, thereby increasing the pushing force of the support block on the welding pad. When the workpiece is placed on the welding pad, the welding pad and the workpiece are pressed more tightly together. After the welding pad and the workpiece are placed, the drive wheel 2311 is driven to rotate, causing the conveyor belt 2313 to move. The driven wheel 2312 also rotates synchronously. When the conveyor belt 2313 moves, the two sides of the conveyor belt 2313 move in opposite directions along its length, causing the limiting plate 232 and the abutment plate 233 located on both sides of the support block 21 to move closer and closer until the limiting plate 232 and the abutment plate 233 are both in contact with the support block 21. At this time, the limiting plate 232 and the abutment plate 233 simultaneously apply a squeezing force to the support block 21, thereby clamping and fixing the support block 21 between the limiting plate 232 and the support block 21, thus fixing the position of the support block 21 and reducing the possibility of the workpiece and the welding pad shaking during the welding process.

[0068] Reference Figure 5 and Figure 6 To increase the stability of the support block 21 held by the limiting plate 232 and the abutment plate 233, several protective strips are fixed on the support block 21. The anti-slip strip 211 is an annular strip and coaxial with the support block 21. The limiting plate 232 and the abutment plate 233 are both fixed with a serrated surface 80 on the side near the support block 21. When the limiting plate 232 and the abutment plate 233 hold the support block 21, the serrated surface 80 on the limiting plate 232 and the abutment plate 233 abuts against the anti-slip strip 211, which increases the roughness of the contact surface, thereby increasing the friction and thus improving the stability of the limiting plate 232 and the abutment plate 233 in holding and fixing the support block 21.

[0069] Reference Figure 5 and Figure 6 To ensure that all support blocks 21 are simultaneously fixed and that every point of contact between the welding pad and the support block 21 is immediately and stably supported, a rotating assembly 70 is provided on a longitudinal beam 12 away from the rotating gear 61 to simultaneously drive the two drive wheels 2311. The rotating assembly 70 includes a transmission rack 71 and two linkage gears 72. The transmission rack 71 is horizontally arranged and slidably connected to the longitudinal beam 12. A cylinder 711 is bolted to the longitudinal beam 12, and the output end of the cylinder 711 is fixed to one end of the transmission rack 71. The cylinder 711 can drive the transmission rack 71 to move along the length of the longitudinal beam 12. The two linkage gears 72 correspond one-to-one with the drive wheels 2311 and are rotatably connected to the longitudinal beam 12. The linkage gears 72 mesh with the transmission rack 71. A transmission bevel gear 73 is coaxially fixed to the linkage gear 72 via a rotating rod 721. A linkage bevel gear 74 that meshes with the transmission bevel gear 73 is coaxially fixed to the drive wheel 2311.

[0070] The cylinder 711 is activated, driving the transmission rack 71 to move, which in turn drives the two linkage gears 72 to rotate simultaneously. This causes the transmission bevel gear 73 to rotate around the central axis of the linkage gear 72, thereby driving the two linkage bevel gears 74 to drive the two drive wheels 2311 to rotate synchronously. This enables the limiting plates 232 and abutment plates 233 on the two conveyor belts 2313 to move simultaneously. When the support block 21 is clamped by the limiting plates 232 and abutment plates 233 on both sides, the support blocks 21 on both sides of the frame 10 are fixed simultaneously. Furthermore, the two drive wheels 2311 share the same power source as the cylinder 711, which is more energy-efficient.

[0071] The implementation principle of a high-strength welding fixture for a traction beam according to an embodiment of this application is as follows: In use, the welding pad is first placed on the support mechanism 20, which is then positioned within the frame 10. Next, the workpiece is placed within the frame 10, positioned above the welding pad. The positions of the workpiece and the welding pad are adjusted so that the welding pad aligns with the welding area on the back of the workpiece. Then, the drive assembly 60 is activated, driving the moving assembly 40 to simultaneously move several pressing blocks 30 downwards until the pressing blocks 30 abut against the bottom wall of the workpiece. At this point, the pressing blocks 30 apply downward pressure to the workpiece, while the support mechanism 20 applies upward support force to the welding pad. This creates a relative force between the pressing blocks 30 and the support mechanism 20, pressing the welding pad firmly against the weld seam on the back of the workpiece, thus fixing the relative position of the workpiece and the welding pad and meeting the welding process requirements of the workpiece. During this process, it is not necessary to move the pressing blocks 30 downwards sequentially; the moving assembly 40 can simultaneously press several pressing blocks 30 against the workpiece, making operation convenient and improving work efficiency.

[0072] The above are all preferred embodiments of this application, and are not intended to limit the scope of protection of this application. Therefore, all equivalent changes made in accordance with the structure, shape and principle of this application should be covered within the scope of protection of this application.

Claims

1. A high-strength welding fixture for a traction beam, used to weld a workpiece and a welding backing plate, characterized in that, include: A frame (10) for accommodating a welding pad and a workpiece; A support mechanism (20) is provided on the frame (10), and the support mechanism (20) is in contact with the bottom wall of the welding pad to support the welding pad; Multiple pressing blocks (30) are provided on both sides of the frame (10) along its length. The pressing blocks (30) are in contact with the top wall of the workpiece and are used to press the workpiece onto the welding pad. A movable component (40) is disposed on the frame (10). The movable component (40) is connected to the pressing block (30). The movable component (40) is driven by the driving component (60) and is used to drive the pressing block (30) to move towards or away from the workpiece. The frame (10) is provided with support mechanisms (20) on both sides along its length, and the support mechanisms (20) include: Multiple support blocks (21) are provided, each of which corresponds to a pressing block (30). The support blocks (21) are located directly below the pressing blocks (30). The support blocks (21) are connected to the frame (10) via support springs (22). One end of the support springs (22) is connected to the frame (10), and the other end is connected to the support blocks (21). The support springs (22) are used to push the support blocks (21) upward. A limiting component (23) is provided on the frame (10), and the limiting component (23) abuts against the support block (21) to restrict the movement of the support block (21); The limiting component (23) includes: A transmission belt (231) is provided on the frame (10). The transmission belt (231) includes a drive wheel (2311), a driven wheel (2312), and a conveyor belt (2313). The drive wheel (2311) and the driven wheel (2312) are rotatably connected to the frame (10). The conveyor belt (2313) is arranged along the length of the frame (10) and is sleeved on the drive wheel (2311) and the driven wheel (2312). The drive wheel (2311) rotates to drive the conveyor belt (2313) to move and the driven wheel (2312) to rotate. Multiple limiting plates (232) are fixed on one side of the conveyor belt (2313), and the multiple limiting plates (232) correspond one-to-one with the support block (21); Multiple abutment plates (233) are fixed on the other side of the conveyor belt (2313). Each abutment plate (233) corresponds to a limiting plate (232). The support block (21) is located between adjacent limiting plates (232) and abutment plates (233). The conveyor belt (2313) moves to drive adjacent limiting plates (232) and abutment plates (233) to move closer or further apart.

2. The high-strength welding fixture for the traction beam according to claim 1, characterized in that, The moving component (40) includes: A plurality of movable rods (41) are arranged vertically, and each of the movable rods (41) corresponds to a pressing block (30). The movable rods (41) are connected to the pressing block (30) through a connector (50). The pressing block (30) is slidably connected to the frame (10). The movable rods (41) move vertically to drive the pressing block (30) to move on the frame (10) toward or away from the workpiece. A plurality of worm gears (42) are rotatably connected to the frame (10). Each of the worm gears (42) corresponds to a moving rod (41). The worm gears (42) are coaxially sleeved on the moving rod (41). The worm gears (42) and the moving rod (41) are threadedly connected. Two worm gears (43) are distributed on both sides of the frame (10) along its length. The worm gears (43) are rotatably connected to the frame (10). The worm gears (43) can rotate about their central axis. The worm wheel (42) meshes with the worm gears (43). The worm gears (43) are connected to the drive assembly (60).

3. The high-strength welding fixture for the traction beam according to claim 2, characterized in that, The connector (50) includes: The connecting rod (51) is coaxially fixed to the top of the moving rod (41), and the pressing block (30) can be sleeved on the connecting rod (51) and contact the top wall of the moving rod (41); A connecting block (52) is sleeved on the end of the connecting rod (51) away from the moving rod (41). The connecting block (52) is threaded to the top end of the moving rod (41). The bottom wall of the connecting block (52) can contact the pressing block (30). A vertically arranged sliding rod (311) is fixed on the side wall of the pressing block (30). A sliding hole (13) is provided on the frame (10). The sliding rod (311) is adapted to be inserted into the sliding hole (13) and can move up and down in the sliding hole (13).

4. The high-strength welding fixture for the traction beam according to claim 1, characterized in that, A rubber pad (321) is fixed on the bottom wall of the pressing block (30), and the rubber pad (321) can abut against the top wall of the workpiece.

5. The high-strength welding fixture for the traction beam according to claim 2, characterized in that, The driving component (60) includes: A rotating gear (61) is rotatably connected to the frame (10). The rotating gear (61) is driven by a motor (611). The motor (611) is located on the frame (10). The output end of the motor (611) is coaxially fixed with the rotating gear (61) and is used to drive the rotating gear (61) to rotate around the central axis of the rotating gear (61). Two transmission gears (62) are rotatably connected to the frame (10). The rotating gear (61) is located between the two transmission gears (62). The transmission gears (62) mesh with the rotating gears (61). The two transmission gears (62) correspond one-to-one with the worm (43), and the transmission gears (62) and the corresponding worm (43) are coaxially fixed.

6. The high-strength welding fixture for the traction beam according to claim 1, characterized in that, A number of anti-slip strips (211) are fixed on the side wall of the support block (21). A serrated surface (80) is provided on the side of the adjacent limiting plate (232) and abutment plate (233) that are close to each other. The serrated surface (80) can abut against the anti-slip strips (211).

7. The high-strength welding fixture for the traction beam according to claim 1, characterized in that, The frame (10) is provided with a rotating component (70), which is connected to two driving wheels (2311) and is used to drive the two driving wheels (2311) to rotate simultaneously.

8. The high-strength welding fixture for the traction beam according to claim 7, characterized in that, The rotating assembly (70) includes: A transmission rack (71) is slidably connected to the frame (10). The transmission rack (71) is driven by a cylinder (711). The cylinder (711) is located on the frame (10). The output end of the cylinder (711) is fixed to the transmission rack (71) and is used to drive the transmission rack (71) to move along the width direction of the frame (10). Two linkage gears (72) are connected to the drive wheel (2311) one by one. The linkage gears (72) are rotatably connected to the frame (10). The linkage gears (72) mesh with the transmission rack (71). A transmission bevel gear (73) is coaxially fixed on the linkage gears (72). A linkage bevel gear (74) meshing with the transmission bevel gear (73) is coaxially fixed on the drive wheel (2311).

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