Welding device for electric iron accessories

Abstract

The invention relates to the technical field of welding devices, in particular to a welding device for electric iron accessories, which comprises a welding device body, a plurality of clamping units and a swing driving device. The welding device body is provided with an iron accessory bearing structure, and all the clamping units are installed on the iron accessory bearing structure. At least two clamping units form a clamping set, and the clamping units in the same set can be close to or away from each other. The clamping unit is provided with a positioning structure and a swinging clamping structure; the positioning structure is matched with another positioning structure in the same group to clamp the iron accessory; the swing clamping structure is provided with a transmission part and a clamping part, and the transmission part is pivoted to the clamping unit; the swing driving device is installed on the clamping unit, and the transmission part is in transmission connection with the swing driving device through the torque limiting structure. The torque limiting structures are used for transmitting and limiting transmission torque, and after the clamping parts abut against the iron accessory, the transmission parts and the corresponding torque limiting structures are separated from transmission. The clamping adaptability of electric iron accessories of different specifications and shapes is improved.

Description

Technical Field

[0001] This invention relates to the field of welding equipment technology, and more particularly to a welding device for electric railway accessories. Background Technology

[0002] The electric power railway accessory welding device is a specialized welding equipment used for welding and fixing components such as crossarms, clamps, connecting plates, hanging rings, and tower supports.

[0003] Chinese utility model CN219358395U discloses a welding device for electric iron accessories. It uses a manual sliding mechanism to slide the fixing blocks at the four corners of a fixing plate, which drives the L-shaped rods and U-shaped blocks connected to the fixing blocks to move synchronously. The four U-shaped blocks clamp and fix the electric iron accessories placed on the fixing plate from the four corners. However, the U-shaped blocks in the clamping structure are fixed structures, while electric iron accessories include various irregular structures such as angle steel, clamps, connecting plates, and hanging rings. Moreover, there are differences in different sizes and specifications of the same type of iron accessories, which makes the U-shaped blocks poorly adaptable to clamping electric iron accessories of different specifications and shapes. Summary of the Invention

[0004] In order to overcome the shortcomings of the prior art, the present invention aims to provide a welding device for electric iron accessories, which improves the clamping adaptability to electric iron accessories of different specifications and shapes.

[0005] The objective of this invention is achieved through the following technical solution:

[0006] A welding apparatus for electric railway accessories, comprising:

[0007] The welding device body is provided with an iron accessory support structure;

[0008] Multiple clamping units are provided, each of which is mounted on the iron accessory bearing structure; at least two of the multiple clamping units form a clamping group, and the clamping units located in the same clamping group can be close to or far from each other;

[0009] The clamping unit is provided with at least one positioning structure and at least two swing clamping structures; the positioning structure, as the clamping unit moves relative to itself, cooperates with the positioning structure of another clamping unit in the same clamping group to clamp iron accessories.

[0010] The swing clamping structure is provided with a transmission part and a clamping part. The transmission part is pivotally connected to the clamping unit so that the clamping part can swing relative to the positioning structure.

[0011] A swing drive device is installed on the clamping unit; each of the transmission parts of the same clamping unit is connected to the swing drive device via a torque limiting structure; the swing drive device is used to drive each clamping part to swing toward or away from the iron attachment; the torque limiting structure is used to transmit torque to the corresponding transmission part and limit the transmission torque; the transmission part disengages from the corresponding torque limiting structure as the clamping part abuts against the iron attachment.

[0012] Furthermore, the clamping unit has a mounting cavity with a top opening; the bottom of the mounting cavity is provided with a rotating seat and at least two first rotating grooves;

[0013] The swing drive device includes a worm, at least two worm wheels and a first motor. The worm is mounted on the rotating seat and the first motor is driven by the worm.

[0014] The two first rotation slots are arranged opposite each other along the radial direction of the worm, and each worm wheel is embedded in the corresponding first rotation slot, and each worm wheel meshes with the worm for transmission.

[0015] The clamping unit is equipped with a cover plate, which is detachably assembled to the clamping unit and is used to cover the opening of the mounting cavity;

[0016] The clamping unit has a clearance groove corresponding to each of the swing clamping structures, and each clamping part extends to the outside of the clamping unit through the corresponding clearance groove.

[0017] Furthermore, the torque limiting structure includes a slipperable force-applying part, a slipperable force-receiving part, and a first elastic drive member; the slipperable force-applying part is mounted on the worm gear, and the slipperable force-receiving part is mounted on the transmission part; the slipperable force-applying part abuts against the slipperable force-receiving part, and the slipperable force-applying part is used to transmit the torque of the worm gear to the slipperable force-receiving part;

[0018] The first elastic drive member is driven to be connected to the detachable force receiving part, and the first elastic drive member is used to provide a driving force to the detachable force receiving part to abut against the detachable force applying part;

[0019] The detachable force-applying part is provided with a plurality of first detachable protrusions, which are arranged at intervals along the circumference of the worm gear; the first detachable protrusions are provided with a first detachable inclined surface, which extends inclinedly in the opposite direction to the rotation direction of the worm gear.

[0020] The detachable force-bearing part is provided with a second detachable boss and a second detachable inclined surface. The second detachable boss and the second detachable inclined surface are mirror images of the first detachable boss and the first detachable inclined surface. The first detachable inclined surface and the second detachable inclined surface abut against each other and form a sliding friction fit.

[0021] Furthermore, the bottom of the cover plate is provided with guide posts corresponding to each of the transmission parts, and the guide posts extend along the sliding direction corresponding to the slidable force receiving part and the slidable force applying part; the guide posts are provided with a first limiting guide groove, and the first limiting guide groove extends along the length direction of the guide posts.

[0022] The transmission part is provided with a guide through hole and a second rotation groove; the transmission part is rotatably sleeved on the outer peripheral surface of the guide column through the guide through hole;

[0023] The first elastic driving component is a spring, which is arranged along the length of the guide column; one end of the spring is a force-applying end and the other end is an adjusting end; the force-applying end abuts against the slidable force-receiving part and is embedded in the second rotation groove; the adjusting end is slidably engaged with the first limiting guide groove, which is used to limit the rotation and guide the extension of the adjusting end.

[0024] The clamping unit is provided with a first adjustment structure corresponding to each of the torque limiting structures. The first adjustment structure is used to adjust the preload of the corresponding spring.

[0025] Furthermore, the first adjustment structure includes a first screw and a first rotary force-applying handle; the cover plate has a first adjustment hole corresponding to each of the first adjustment structures, and the first adjustment hole penetrates the cover plate along the thickness direction; one end of the first screw extends into the mounting cavity through the corresponding first adjustment hole and is threadedly connected to the corresponding adjustment end; the other end of the first screw is assembled with the first rotary force-applying handle;

[0026] The clamping unit is equipped with at least two first sensors and a signal conversion device. Each first sensor is mounted on a corresponding detachable force-applying part. The first sensor is used to detect whether the corresponding detachable force-bearing part is detached from the detachable force-applying part. The first sensor is signal-connected to the signal conversion device, and the first motor is electrically connected to the signal conversion device.

[0027] Furthermore, the side wall of the clamping unit is provided with a sleeve portion, which is located between the two swing clamping structures of the clamping unit; one end of the sleeve portion extends to the outer side wall of the clamping unit, and the other end of the sleeve portion extends into the mounting cavity;

[0028] The sleeve portion has a sleeve cavity, which extends through the sleeve portion along the length direction of the positioning structure to one end of the outer wall of the clamping unit, and the positioning structure is slidably sleeved in the sleeve cavity;

[0029] The socket cavity is provided with a second elastic drive member. The two ends of the second elastic drive member are respectively assembled with one end of the positioning structure that extends into the socket cavity and the inner end wall of the socket cavity. The second elastic drive member is used to provide the positioning structure with the pushing force of the pushing iron attachment.

[0030] The outer peripheral surface of the socket is provided with a limiting groove, which extends along the length direction of the positioning structure and communicates with the socket cavity; the outer peripheral surface of the positioning structure is provided with a limiting protrusion, which is embedded in the limiting groove and slides with the limiting groove, and the limiting protrusion is used to prevent the positioning structure from sliding out of the socket cavity.

[0031] The clamping unit is provided with a second adjustment structure, which is used to adjust the magnitude of the pushing force provided by the second elastic drive member.

[0032] Furthermore, the iron accessory bearing structure is provided with multiple translation drive devices, each of which is used to drive the corresponding clamping unit to move in the length direction of the positioning structure;

[0033] The translation drive device includes a second screw and a second motor. The second screw extends along the length direction of the corresponding positioning structure. The second screw is rotatably mounted on the iron accessory bearing structure, and the second motor is driven by the second screw.

[0034] The iron accessory bearing structure is provided with a second limiting guide groove corresponding to each of the translation drive devices, and the second limiting guide groove extends along the axial direction of the corresponding second screw.

[0035] The clamping unit is equipped with a transmission seat, which is embedded in the second limiting guide groove and slides in cooperation with the second limiting guide groove; the transmission seat has a threaded transmission hole adapted to the second screw, the second screw passes through the threaded transmission hole and is threaded in the threaded transmission hole.

[0036] Furthermore, the second adjustment structure includes a third screw, a second rotary force-applying handle, a movable part, and a second sensor; a second adjustment hole is provided on one side wall of the clamping unit that is horizontally opposite to the sleeve part, and the second adjustment hole extends through the mounting cavity along the length direction of the positioning structure; one end of the third screw extends into the mounting cavity through the second adjustment hole, and the other end of the third screw is assembled with the second rotary force-applying handle;

[0037] The sleeve portion has a movable limiting hole at one end of the mounting cavity. The movable limiting hole extends through the sleeve cavity along the length direction of the positioning structure. One end of the movable portion extends into the sleeve cavity and slides with the movable limiting hole. The end of the movable portion extending into the sleeve cavity is used to abut against the positioning structure.

[0038] The third screw is threadedly engaged with the movable part; the second sensor is mounted on one end of the movable part that extends into the sleeve cavity, and the second sensor is used to detect whether the positioning structure abuts against the movable part;

[0039] The second sensor is signal-connected to the signal conversion device, and the second motor is electrically connected to the signal conversion device.

[0040] Furthermore, the welding device body is provided with a moving table, a rotating table, a third motor, a welding torch mounting bracket and a welding torch, and the moving table can move relative to the welding device body along a first horizontal direction;

[0041] The rotary table is mounted on the top of the movable table, and the third motor is driven by the rotary table. The third motor is used to drive the rotary table to rotate relative to the movable table.

[0042] The iron accessory bearing structure is assembled on the rotary table and rotates synchronously with the rotary table;

[0043] The welding torch mounting bracket is movable relative to the welding device body along the first horizontal direction; the welding torch mounting bracket is provided with a guide rail, which extends along the second horizontal direction; the mounting end of the welding torch is slidably engaged with the guide rail.

[0044] Furthermore, the welding device body is provided with a first transmission guide assembly and a second transmission guide assembly; the first transmission guide assembly includes a first rack, a first gear and a fourth motor, the first rack is disposed on the welding device body along the first horizontal direction, the first gear meshes with the first rack and is driven by the fourth motor; the first gear is mounted on the moving table, and the fourth motor is used to drive the moving table to move along the first horizontal direction;

[0045] The second transmission guide assembly includes a second rack, a second gear, and a fifth motor. The second rack is arranged along the first horizontal direction on the welding device body. The second gear meshes with the second rack and is driven by the fifth motor. The second gear is mounted on the welding torch mounting frame, and the fifth motor drives the welding torch mounting frame to move along the first horizontal direction.

[0046] Compared with the prior art, the beneficial effects of the present invention are as follows:

[0047] The welding device body is equipped with an iron accessory bearing structure; each clamping unit is installed on the iron accessory bearing structure; thus, the iron accessory bearing structure serves as a unified clamping reference, providing a stable mounting carrier for multiple clamping units. The clamping points can be arranged according to the actual length, clamping span, and external dimensions of the power iron accessories, adapting to the clamping requirements of workpieces with different spans, from small grounding plates and pull rings to large portal crossarms and tension supports.

[0048] A clamping group is formed by at least two of the clamping units. The clamping units in the same clamping group can move closer to or further away from each other. Each clamping unit is provided with at least one positioning structure and at least two swing clamping structures. The positioning structure moves with the relative movement of the clamping units and cooperates with the positioning structure of another clamping unit in the same clamping group to clamp the iron accessories. Thus, by moving the clamping units in the same clamping group in opposite directions, the clamping distance can be adjusted to match electric iron accessories with different lateral specifications and different widths. With the positioning structure moving synchronously with the clamping units, the reference clamping of the workpiece can be achieved by the opposing movement of the two sets of positioning structures. Whether it is a conventional workpiece such as equal angle steel, unequal angle steel, channel steel, or round steel hoop, or a bent irregular part or a non-standard workpiece with reinforcing ribs, the clamping and positioning can be completed quickly, providing a stable reference support for the subsequent auxiliary clamping of the swing clamping structure, and improving the clamping adaptability of electric iron accessories with different specifications and shapes.

[0049] The swing clamping structure includes a transmission part and a clamping part. The transmission part is pivotally connected to the clamping unit, allowing the clamping part to swing relative to the positioning structure. Through the pivotal connection between the transmission part and the clamping unit, the clamping part can swing freely around the pivot point, enabling it to adapt to and fit non-planar clamping parts such as inclined surfaces, arc surfaces, bent surfaces, and irregular curved surfaces of electric iron accessories. Whether it is the arc outer wall of the clamp, the flange inclined surface of the angle steel crossarm, or the multi-angle vertical surface of the irregularly shaped bent part, the swinging mechanism can achieve close contact between surfaces, replacing the line contact clamping of traditional rigid jaws, thus solving the problems of unstable clamping and easy slippage of irregularly shaped workpieces.

[0050] The swing drive device is installed on the clamping unit; each of the transmission parts of the same clamping unit is connected to the swing drive device via a torque limiting structure; the swing drive device is used to drive each clamping part to swing toward or away from the iron attachment; the torque limiting structure is used to transmit torque to the corresponding transmission part and limit the transmission torque; the transmission part disengages from the corresponding torque limiting structure as the clamping part abuts against the iron attachment; thus, through the transmission design of the same swing drive device combined with multiple sets of independent torque limiting structures, a single drive source can drive multiple sets of clamping parts to move independently. Even if there are thickness differences, height differences, or flatness deviations at different clamping points of the same workpiece, each clamping part can independently complete the swing fitting, and there will be no situation where the other clamping parts are not properly fitted after a single clamping part has been fitted. The problem of suspended and loose clamping is addressed. Simultaneously, the torque limiting structure's torque limitation and automatic disengagement function control the maximum clamping force. For easily deformable workpieces such as thin-walled angle steel plates and thin-plate bending parts, excessive clamping force can prevent workpiece crushing or bending deformation, ensuring the installation accuracy and mechanical performance of the electric iron accessories. For high-strength workpieces such as thick-walled tension parts and heavy-duty supports, sufficient clamping force is guaranteed to prevent workpiece displacement during welding. Furthermore, the automatic disengagement of the clamping part after contacting the workpiece enables adaptive synchronous clamping of multiple clamping parts. This eliminates the need for individual adjustments to clamping stroke and force for different workpiece specifications, and allows for adaptation to all types of electric iron accessories with different wall thicknesses, shapes, and surface conditions without the need to replace the clamps, further enhancing the clamping adaptability to electric iron accessories of varying specifications and shapes. Attached Figure Description

[0051] Figure 1 This is a three-dimensional structural schematic diagram of a welding device for electric railway accessories according to the present invention;

[0052] Figure 2 for Figure 1 A magnified view of a portion of point A in the middle;

[0053] Figure 3 for Figure 1 A partial sectional view;

[0054] Figure 4 for Figure 3 A magnified view of a portion of point B in the middle;

[0055] Figure 5 for Figure 1 A split diagram of the clamping unit, the swing drive device, and the torque limiting structure;

[0056] Figure 6 for Figure 5 A magnified view of a portion of point C.

[0057] In the diagram: 1. Welding device body; 11. Iron accessory bearing structure; 111. Translation drive device; 1111. Second screw; 1112. Second motor; 112. Second limiting guide groove; 12. Moving table; 13. Rotary table; 14. Third motor; 15. Welding torch mounting bracket; 151. Guide rail; 16. Welding torch; 17. First transmission guide assembly; 171. First rack; 172. First gear; 173. Fourth motor; 18. Second transmission guide assembly Components; 181, Second rack; 182, Second gear; 183, Fifth motor; 2, Clamping unit; 21, Positioning structure; 211, Limiting protrusion; 22, Swinging clamping structure; 221, Transmission part; 2211, Guide through hole; 2212, Second rotation slot; 222, Clamping part; 23, Mounting cavity; 231, Rotation seat; 232, First rotation slot; 24, Cover plate; 241, Guide column; 2411, First limiting guide slot; 242. 25. First adjusting hole; 26. Clearance groove; 27. First adjusting structure; 28. First screw; 29. ​​First rotary force-applying handle; 20. Sleeve part; 21. Sleeve cavity; 22. Second elastic drive member; 23. Limiting groove; 274. Movable limiting hole; 28. Second adjusting structure; 29. ​​Third screw; 20. Second rotary force-applying handle; 20. Movable part; 21. Second sensor; 22. Second adjusting hole; 3. Swing drive device; 3 1. Worm gear; 32. Worm wheel; 33. First motor; 4. Torque limiting structure; 41. Sliding force application part; 411. First sliding boss; 412. First sliding ramp; 42. Sliding force receiving part; 421. Second sliding boss; 422. Second sliding ramp; 43. First elastic drive element; 431. Spring; 4311. Force application end; 4312. Adjustment end; 5. First sensor; 6. Signal conversion device; 7. Transmission seat; 71. Threaded transmission hole. Detailed Implementation

[0058] 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.

[0059] It should be noted that when an element is described as being "fixed to" another element, it can be directly attached to the other element or there may be an intervening element. When an element is described as being "connected to" another element, it can be directly connected to the other element or there may be an intervening element. The terms "vertical," "horizontal," "left," "right," and similar expressions used herein are for illustrative purposes only and do not represent the only possible implementations.

[0060] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention pertains. The terminology used herein in the description of the invention is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention. The term "and / or" as used herein includes any and all combinations of one or more of the associated listed items.

[0061] See Figure 1 , Figure 2 The specific implementation of a preferred embodiment of the present invention is as follows: A welding device for electric iron accessories includes: a welding device body 1, a plurality of clamping units 2 and a swing drive device 3.

[0062] The welding device body 1 is provided with an iron accessory bearing structure 11;

[0063] Each of the clamping units 2 is installed on the iron accessory bearing structure 11; at least two of the plurality of clamping units 2 form a clamping group, and the clamping units 2 located in the same clamping group can be close to or far from each other;

[0064] The clamping unit 2 is provided with at least one positioning structure 21 and at least two swing clamping structures 22; the positioning structure 21 moves relative to the clamping unit 2 and cooperates with the positioning structure 21 of another clamping unit 2 in the same clamping group to clamp iron accessories.

[0065] The swing clamping structure 22 is provided with a transmission part 221 and a clamping part 222. The transmission part 221 is pivotally connected to the clamping unit 2 so that the clamping part 222 can swing relative to the positioning structure 21.

[0066] The swing drive device 3 is installed on the clamping unit 2; each of the transmission parts 221 of the same clamping unit 2 is connected to the swing drive device 3 through the torque limiting structure 4; the swing drive device 3 is used to drive each clamping part 222 to swing toward or away from the iron attachment; the torque limiting structure 4 is used to transmit torque to the corresponding transmission part 221 and limit the transmission torque; the transmission part 221 disengages from the corresponding torque limiting structure 4 as the clamping part 222 comes into contact with the iron attachment.

[0067] The contact end of the positioning structure 21 with the iron accessory and the clamping working surface of the clamping part 222 that contacts the iron accessory are preferably made of rubber. The rubber material is selected from nitrile rubber, neoprene rubber or fluororubber that is resistant to welding spatter, wear and scratch. The rubber material is fixed to the contact end of the positioning structure 21 and the clamping end of the clamping part 222 by a vulcanization process.

[0068] In use, first, according to the specifications and shape of the electric iron accessory to be welded, arrange the corresponding number of clamping groups on the iron accessory bearing structure 11 of the welding device body 1. Then, adjust the relative position of the corresponding clamping unit 2 according to the width and clamping span of the electric iron accessory to be welded, and drive the clamping unit 2 to move closer or further away from each other on the iron accessory bearing structure 11, adjusting the spacing of the clamping unit 2 to match the clamping position size of the workpiece to be welded. Then, place the electric iron accessory to be welded on the clamping position of the iron accessory bearing structure 11, so that the workpiece clamping reference is... The vertical reference surface of the angle steel is placed against the positioning structure 21 of the corresponding clamping unit 2. If the workpiece to be welded is an unequal angle steel with a bevel, the vertical reference surface of the angle steel is placed against the abutting end of the positioning structure 21. If the workpiece to be welded is a circular arc clamp, the straight edges of the two sides of the clamp are aligned with the positioning structure 21 of the corresponding clamping unit 2. Then, the corresponding clamping units 2 are driven to move towards each other, and the positioning structure 21 moves synchronously with the clamping units 2 until the rubber abutting ends of the positioning structures 21 of the two clamping units 2 abut against the reference surfaces on both sides of the iron accessory, thus completing the reference positioning and clamping fixation of the iron accessory. Re-activate the swing drive device 3 on the clamping unit 2. The swing drive device 3 transmits torque to each transmission part 221 in the same clamping unit 2 through the torque limiting structure 4, causing the transmission part 221 to rotate around the pivot point. This, in turn, causes each clamping part 222 to swing relative to the positioning structure 21 toward the iron attachment. Each clamping part 222 continues to swing until its rubber clamping working surface abuts against the clamping surface of the iron attachment. Then, the corresponding transmission part 221 disengages from the torque limiting structure 4 and stops swinging, until all clamping parts 222 in the clamping unit 2 are in contact with the iron attachment. After all parts are locked in place, the swing drive device 3 is turned off to complete the full-point clamping and fixing of the iron accessories. Then, welding can be performed on the parts of the electric iron accessories to be welded after clamping and fixing. After welding is completed, the swing drive device 3 is started to rotate in reverse, which drives each clamping part 222 to swing and reset relative to the positioning structure 21 in a direction away from the iron accessories, and releases the clamping. Then, the corresponding clamping units 2 are driven to move away from each other, which drives the positioning structure 21 to detach from the surface of the iron accessories and release the reference positioning. The welded electric iron accessories can then be removed from the iron accessory bearing structure 11.

[0069] Obviously, the welding device body 1 is provided with an iron accessory bearing structure 11; each of the clamping units 2 is installed on the iron accessory bearing structure 11; thus, the iron accessory bearing structure 11 serves as a unified clamping reference, providing a stable mounting carrier for multiple sets of clamping units 2. The clamping points can be arranged according to the actual length, clamping span, and external dimensions of the electric iron accessories, adapting to the clamping requirements of workpieces with different spans, from small grounding plates and pull rings to large portal crossarms and tension supports; at least two of the multiple clamping units 2 form a clamping group, and the clamping units 2 located in the same clamping group can be close to or far from each other; each clamping unit 2 is provided with at least one positioning structure 21 and to Two swing clamping structures 22 are missing; the positioning structure 21 moves relative to the clamping unit 2 and cooperates with the positioning structure 21 of another clamping unit 2 in the same clamping group to clamp the iron accessories; thus, by the clamping units 2 in the same clamping group moving in opposite directions, the clamping distance can be adjusted to match electric iron accessories with different lateral specifications and different widths. With the positioning structure 21 moving synchronously with the clamping unit 2, the reference clamping of the workpiece can be achieved by the opposing movement of the two sets of positioning structures 21. Whether it is a conventional workpiece such as equal-sided angle steel, unequal-sided angle steel, channel steel, round steel hoop, or a bent irregular part or a non-standard workpiece with reinforcing ribs, clamping and positioning can be completed quickly, which is beneficial for subsequent... The auxiliary clamping of the swing clamping structure 22 provides stable reference support, improving the clamping adaptability to electric railway accessories of various specifications and shapes. Based on the swing clamping structure 22, a transmission part 221 and a clamping part 222 are provided. The transmission part 221 is pivotally connected to the clamping unit 2, allowing the clamping part 222 to swing relative to the positioning structure 21. Thus, through the pivotal connection between the transmission part 221 and the clamping unit 2, the clamping part 222 can swing freely around the pivot point, adapting to and conforming to non-planar clamping parts of electric railway accessories such as inclined surfaces, arc surfaces, bent surfaces, and irregular curved surfaces. This applies to the arcuate outer wall of a clamp, the inclined flange of an angle steel crossarm, and the multi-angle vertical surface of an irregularly shaped bent part. By swinging, a close fit between surfaces can be achieved, replacing the line contact clamping of traditional rigid grippers, thus solving the problems of unstable clamping and slippage of irregularly shaped workpieces; the swinging drive device 3 is installed on the clamping unit 2; each of the transmission parts 221 in the same clamping unit 2 is connected to the swinging drive device 3 through a torque limiting structure 4; the swinging drive device 3 is used to drive each clamping part 222 to swing toward or away from the iron attachment; the torque limiting structure 4 is used to transmit torque to the corresponding transmission part 221 and limit the transmission torque; the transmission part 221 disengages from the corresponding torque limiting structure 4 as the clamping part 222 comes into contact with the iron attachment;Thus, through the transmission design of the same swing drive device 3 combined with multiple sets of independent torque limiting structures 4, a single drive source can drive multiple sets of clamping parts 222 to move independently. Even if there are thickness differences, height differences, or flatness deviations at different clamping points of the same workpiece, each clamping part 222 can independently complete the swing and fit, avoiding the problem of other clamping parts 222 being suspended and loosely clamped after a single clamping part 222 has fit. At the same time, through the torque limiting and automatic disengagement functions of the torque limiting structure 4, the maximum clamping force of the clamping part 222 can be controlled, avoiding clamping of easily deformable workpieces such as thin-walled angle steel hanging plates and thin plate bending parts. Excessive force can cause workpiece crushing, bending, and deformation. To ensure the installation accuracy and mechanical performance of electric iron accessories, sufficient clamping force is guaranteed for high-strength workpieces such as thick-walled tension components and heavy-duty supports, preventing workpiece displacement during welding. Furthermore, the clamping part 222 automatically disengages from the transmission after contacting the workpiece, enabling adaptive synchronous clamping of multiple clamping parts 222. This eliminates the need for individual adjustments to clamping stroke and force for different workpiece specifications, and allows for the adaptation to all types of electric iron accessories with varying wall thicknesses, shapes, and surface conditions without the need to change the grippers, further enhancing the clamping adaptability to electric iron accessories of diverse specifications and shapes.

[0070] See Figure 2 , Figure 5 In this embodiment, in order to more effectively improve the clamping adaptability to electric iron accessories of different specifications and shapes, preferably, the clamping unit 2 is provided with a mounting cavity 23 with a top opening; the bottom of the mounting cavity 23 is provided with a rotating seat 231 and at least two first rotating grooves 232.

[0071] The swing drive device 3 includes a worm 31, at least two worm wheels 32 and a first motor 33. The worm 31 is mounted on the rotating seat 231 and the first motor 33 is drivenly connected to the worm 31.

[0072] Two first rotation slots 232 are arranged opposite each other along the radial direction of the worm 31, and each worm wheel 32 is embedded in the corresponding first rotation slot 232, and each worm wheel 32 meshes with the worm 31 for transmission.

[0073] The clamping unit 2 is equipped with a cover plate 24, which is detachably assembled to the clamping unit 2 and is used to cover the opening of the mounting cavity 23;

[0074] The clamping unit 2 is provided with a clearance groove 25 corresponding to each of the swing clamping structures 22, and each of the clamping parts 222 extends to the outside of the clamping unit 2 through the corresponding clearance groove 25.

[0075] The reverse self-locking characteristic of the worm gear 31 and worm wheel 32 meshing transmission can prevent the clamping part 222 from swinging and loosening under external force, ensuring that the clamping force is stable and does not decrease during the welding process, and is suitable for the vibration conditions during the welding of electric iron accessories; the radially opposite arrangement of double worm wheels 32 can drive the clamping parts 222 on both sides to swing synchronously and symmetrically, ensuring that the clamping force on both sides of the workpiece is uniform and avoiding workpiece clamping deviation, and is suitable for various iron accessories with symmetrical and asymmetrical shapes; through the top-opening mounting cavity 23 and the removable cover plate 24, the internal transmission structure can be inspected, maintained and replaced without disassembling the entire clamping unit 2, reducing equipment operation and maintenance costs; the clearance groove 25 provides sufficient swing stroke for the clamping part 222, further expanding the clamping adaptation range.

[0076] The cover plate 24 and the clamping unit 2 adopt a quick-release detachable connection structure: multiple sets of hand-tightening threaded parts are arranged on the circumferential edge of the cover plate 24. The head of the threaded parts is formed with an anti-slip knurled texture that facilitates hand application of force. The threaded parts can be tightened and loosened by hand without the need for external tools such as screwdrivers and wrenches. The edge of the mounting cavity 23 of the clamping unit 2 is provided with internal threaded holes that are adapted to each of the hand-tightening threaded parts.

[0077] Furthermore, the torque limiting structure 4 includes a slipperable force-applying part 41, a slipperable force-receiving part 42, and a first elastic drive member 43; the slipperable force-applying part 41 is mounted on the worm gear 32, and the slipperable force-receiving part 42 is mounted on the transmission part 221; the slipperable force-applying part 41 abuts against the slipperable force-receiving part 42, and the slipperable force-applying part 41 is used to transmit the torque of the worm gear 32 to the slipperable force-receiving part 42;

[0078] The first elastic drive member 43 is driven to be connected to the slipperable force receiving part 42, and the first elastic drive member 43 is used to provide the slipperable force receiving part 42 with a driving force that abuts against the slipperable force applying part 41;

[0079] The detachable force-applying part 41 is provided with a plurality of first detachable protrusions 411, which are arranged at intervals along the circumference of the worm gear 32; the first detachable protrusions 411 are provided with a first detachable inclined surface 412, which extends inclinedly in the opposite direction to the rotation direction of the worm gear 32.

[0080] The detachable force-bearing part 42 is provided with a second detachable boss 421 and a second detachable inclined surface 422. The second detachable boss 421 and the second detachable inclined surface 422 are mirror images of the first detachable boss 411 and the first detachable inclined surface 412. The first detachable inclined surface 412 abuts against the second detachable inclined surface 422 and forms a sliding friction fit.

[0081] Through the mirror-fitted structure of the first sliding inclined surface 412 and the second sliding inclined surface 422, and the first sliding boss 411 and the second sliding boss 421, differentiated torque transmission is achieved for the clamping and releasing bidirectional movements of the clamping part 222. During the clamping stroke when the clamping part 222 swings towards the iron accessory to abut, torque transmission is achieved through the close contact of the first sliding inclined surface 412 and the second sliding inclined surface 422. During the releasing stroke when the clamping part 222 swings away from the iron accessory to return to its original position, torque transmission is achieved through the contact of the end faces of the first sliding boss 411 and the second sliding boss 421. This simultaneously completes the smooth transmission and release of torque during the clamping stroke. During the clamping stroke of the clamping part 222, the sliding friction mode of the first sliding inclined surface 412 and the second sliding inclined surface 422 ensures smooth and unobstructed transmission. The system features no rigid impact and a stable and controllable slip trigger torque. Multiple first slip bosses 411, spaced circumferentially along the worm gear 32, ensure uniform torque transmission during the clamping stroke, preventing damage from overload on a single boss or inclined surface. Furthermore, during the release stroke, the rigid contact between the first slip bosses 411 and the second slip bosses 421 enables stable, slip-free transmission of the reverse torque, ensuring rapid and smooth reset of the clamping part 222. The abutment force provided by the first elastic drive member 43 allows for flexible adjustment of the slip torque threshold. For thin-walled, easily deformable electric iron accessories, the threshold can be lowered; for thick-walled, heavy electric iron accessories, the threshold can be increased. This prevents workpiece crushing and deformation while maintaining clamping rigidity, adapting to electric iron accessories of different materials, wall thicknesses, and rigidities.

[0082] Furthermore, the bottom of the cover plate 24 is provided with guide posts 241 corresponding to each of the transmission parts 221. The guide posts 241 extend along the sliding direction corresponding to the slidable force receiving part 42 and the slidable force applying part 41. The guide posts 241 are provided with a first limiting guide groove 2411, which extends along the length direction of the guide posts 241.

[0083] The transmission part 221 is provided with a guide through hole 2211 and a second rotation groove 2212; the transmission part 221 is rotatably sleeved on the outer peripheral surface of the guide column 241 through the guide through hole 2211;

[0084] The first elastic driving component 43 is a spring 431, which is arranged along the length of the guide column 241. One end of the spring 431 is a force-applying end 4311 and the other end is an adjusting end 4312. The force-applying end 4311 abuts against the slidable force-receiving part 42 and is embedded in the second rotation groove 2212. The adjusting end 4312 is slidably engaged with the first limiting guide groove 2411, which is used to limit the rotation and guide the extension of the adjusting end 4312.

[0085] The clamping unit 2 is provided with a first adjustment structure 26 corresponding to each of the torque limiting structures 4. The first adjustment structure 26 is used to adjust the preload of the corresponding spring 431.

[0086] The guide column 241 provides dual guidance for the rotation and axial slippage of the transmission part 221, ensuring high coaxiality of the transmission part 221's rotation and no sway in the slippage direction, preventing the clamping part 222 from deviating from its swing trajectory and ensuring clamping fit accuracy. The first limiting guide groove 2411 limits the rotation of the adjusting end 4312 of the spring 431, preventing the spring 431 from rotating synchronously with the transmission part 221 and causing the preload to decrease, thus ensuring the long-term stability of the slippage torque threshold. The first adjusting structure 26 allows for individual adjustment of the preload of each group of springs 431, which can be adjusted for different clamping points of the same workpiece with varying thicknesses. The clamping force of the corresponding clamping part 222 can be adjusted separately to accommodate irregularly shaped electromagnet accessories with inconsistent clamping surface parameters, greatly improving clamping adaptability. By embedding the force-applying end 4311 of the spring 431 into the second rotating groove 2212, a stable radial limit can be formed on the force-applying end 4311 of the spring 431, preventing radial displacement of the force-applying end 4311 under force, ensuring that the spring 431 always applies force stably along the axial direction, and at the same time, it can prevent the force-applying end 4311 of the spring 431 from rotating synchronously with the transmission part 221, further improving the stability of the force applied by the spring 431.

[0087] Further, the first adjustment structure 26 includes a first screw 261 and a first rotary force-applying handle 262; the cover plate 24 has a first adjustment hole 242 corresponding to each of the first adjustment structures 26, and the first adjustment hole 242 penetrates the cover plate 24 along the thickness direction of the cover plate 24; one end of the first screw 261 extends into the mounting cavity 23 through the corresponding first adjustment hole 242 and is threadedly connected to the corresponding adjustment end 4312; the other end of the first screw 261 is assembled with the first rotary force-applying handle 262;

[0088] The clamping unit 2 is equipped with at least two first sensors 5 and a signal conversion device 6. Each first sensor 5 is assembled to the corresponding detachable force-applying part 41. The first sensor 5 is used to detect whether the corresponding detachable force-receiving part 42 is detached from the detachable force-applying part 41. The first sensor 5 is signal-connected to the signal conversion device 6, and the first motor 33 is electrically connected to the signal conversion device 6.

[0089] With the external adjustment structure of the first screw 261 and the first rotating force-applying handle 262, the preload of the spring 431 can be adjusted directly outside the equipment without disassembling the cover plate 24. When changing the type of electric iron accessories of different specifications, the clamping force parameters can be quickly adjusted, improving the changeover efficiency and multi-specification adaptability. The first sensor 5 detects the slippage status of the slippage force-receiving part 42 and the slippage force-applying part 41 of each set of torque limiting structures 4 in real time, and can identify whether the corresponding clamping part 222 has completed effective clamping. When all clamping parts 222 in the same clamping unit 2 have completed slippage locking, the signal conversion device 6 automatically controls the first motor 33 to stop, without the need for manual judgment of the clamping status, avoiding over-driving and damage to the structure.

[0090] The first sensor 5 is preferably an infrared ranging sensor. The infrared ranging sensor can capture the change in distance between the slipperable force-bearing part 42 and the slipperable force-applying part 41 through a non-contact detection method, thereby determining whether the two have slipped apart. Moreover, the non-contact detection method will not interfere with the transmission and slippage action of the torque limiting structure 4, and is suitable for the dynamic detection requirements during equipment operation.

[0091] When adjusting the preload of spring 431, the first rotary force application handle 262 is rotated clockwise or counterclockwise, causing the first screw 261 to rotate synchronously. The first screw 261 is threadedly engaged with the adjusting end 4312 of spring 431. Under the rotational limiting effect of the first limiting guide groove 2411 on the adjusting end 4312, the adjusting end 4312 cannot rotate synchronously with the first screw 261, but can only move axially in a straight line along the first limiting guide groove 2411. When the adjusting end 4312 moves axially, it directly pushes or pulls the spring 431 to extend or retract axially along the guide column 241, changing the compression of the spring 431, thereby realizing the adjustment of the preload of spring 431.

[0092] See Figure 2 , Figure 5 , Figure 6 Furthermore, the side wall of the clamping unit 2 is provided with a sleeve portion 27, which is located between the two swing clamping structures 22 of the clamping unit 2; one end of the sleeve portion 27 extends to the outer side wall of the clamping unit 2, and the other end of the sleeve portion 27 extends into the mounting cavity 23.

[0093] The sleeve portion 27 has a sleeve cavity 271, which extends through the sleeve portion 27 along the length direction of the positioning structure 21 to one end of the outer side wall of the clamping unit 2, and the positioning structure 21 is slidably sleeved in the sleeve cavity 271.

[0094] The socket cavity 271 is provided with a second elastic drive member 272. The two ends of the second elastic drive member 272 are respectively assembled with one end of the positioning structure 21 that extends into the socket cavity 271 and the inner end wall of the socket cavity 271. The second elastic drive member 272 is used to provide the positioning structure 21 with a pushing force for the pushing iron attachment.

[0095] The outer peripheral surface of the socket 27 is provided with a limiting groove 273, which extends along the length of the positioning structure 21 and communicates with the socket cavity 271; the outer peripheral surface of the positioning structure 21 is provided with a limiting protrusion 211, which is embedded in the limiting groove 273 and slides in cooperation with the limiting groove 273, and the limiting protrusion 211 is used to prevent the positioning structure 21 from sliding out of the socket cavity 271.

[0096] The clamping unit 2 is provided with a second adjustment structure 28, which is used to adjust the magnitude of the pushing force provided by the second elastic drive member 272.

[0097] The positioning structure 21, which is slidably sleeved in the sleeve cavity 271, works in conjunction with the second elastic drive member 272 to give the positioning structure 21 elastic extension and retraction capabilities, ensuring that both sides of the positioning structure 21 are tightly fitted with the workpiece reference surface. The cooperation between the limiting groove 273 and the limiting protrusion 211 limits the maximum extension and retraction stroke of the positioning structure 21, preventing the positioning structure 21 from sliding out of the sleeve cavity 271 and causing equipment failure, thus improving operational safety. The second adjustment structure 28 can flexibly adjust the pushing force of the second elastic drive member 272. For thin-walled galvanized electric iron accessories, the pushing force can be reduced to avoid workpiece clamping deformation and plating damage. For heavy electric iron accessories, the pushing force can be increased to ensure the rigidity of the positioning reference, adapting to electric iron accessories of different rigidities and specifications, and further improving the adaptability of positioning and clamping.

[0098] See Figure 1 , Figure 3 , Figure 4 Furthermore, the iron accessory bearing structure 11 is provided with a plurality of translation drive devices 111, each of the translation drive devices 111 being used to drive the corresponding clamping unit 2 to move in the length direction of the positioning structure 21;

[0099] The translation drive device 111 includes a second screw 1111 and a second motor 1112. The second screw 1111 extends along the length direction of the corresponding positioning structure 21. The second screw 1111 is rotatably mounted on the iron accessory bearing structure 11. The second motor 1112 is drivenly connected to the second screw 1111.

[0100] The iron accessory bearing structure 11 is provided with a second limiting guide groove 112 corresponding to each of the translation drive devices 111, and the second limiting guide groove 112 extends along the axial direction of the corresponding second screw 1111;

[0101] The clamping unit 2 is equipped with a transmission seat 7, which is embedded in the second limiting guide groove 112 and slides in cooperation with the second limiting guide groove 112. The transmission seat 7 has a threaded transmission hole 71 adapted to the second screw 1111, and the second screw 1111 passes through the threaded transmission hole 71 and is threaded in cooperation with the threaded transmission hole 71.

[0102] The threaded transmission structure formed by the second screw 1111 and the threaded transmission hole 71 of the transmission seat 7 enables fine adjustment of the spacing between the clamping units 2, which can match electric iron accessories of different widths and spans, thus broadening the range of applications. The sliding cooperation between the second limiting guide groove 112 and the transmission seat 7 guides the movement of the clamping unit 2 throughout the entire process, ensuring high linearity of movement of the clamping unit 2. The coaxiality of the positioning structures 21 on both sides is matched to avoid clamping deviation and improve the positioning and clamping accuracy. With each clamping unit 2 equipped with an independent translation drive device 111, the position of each clamping unit 2 can be controlled individually. For irregularly shaped bent parts, multi-segment spliced ​​parts, and asymmetrical electric iron accessories, the clamping points can be flexibly arranged to meet the personalized clamping needs of irregularly shaped electric iron accessories. At the same time, the automated drive adjustment eliminates the need for manual pushing and pulling, improving the clamping efficiency of workpieces of different specifications.

[0103] See Figure 5 , Figure 6 Furthermore, the second adjustment structure 28 includes a third screw 281, a second rotary force-applying handle 282, a movable part 283, and a second sensor 284; a second adjustment hole 29 is provided on one side wall of the clamping unit 2 that is horizontally opposite to the sleeve part 27, and the second adjustment hole 29 extends through the length direction of the positioning structure 21 to the mounting cavity 23; one end of the third screw 281 extends into the mounting cavity 23 through the second adjustment hole 29, and the other end of the third screw 281 is assembled with the second rotary force-applying handle 282;

[0104] The sleeve portion 27 has a movable limiting hole 274 at one end of the mounting cavity 23. The movable limiting hole 274 extends through the sleeve cavity 271 along the length direction of the positioning structure 21. One end of the movable portion 283 extends into the sleeve cavity 271 and slides with the movable limiting hole 274. The end of the movable portion 283 extending into the sleeve cavity 271 is used to abut against the positioning structure 21.

[0105] The third screw 281 is threadedly engaged with the movable part 283; the second sensor 284 is assembled at one end of the movable part 283 that extends into the sleeve cavity 271, and the second sensor 284 is used to detect whether the positioning structure 21 abuts against the movable part 283.

[0106] The second sensor 284 is signal-connected to the signal conversion device 6, and the second motor 1112 is electrically connected to the signal conversion device 6.

[0107] With the external second rotary force application handle 282, the position of the movable part 283 can be adjusted outside the clamping unit 2 without disassembling the machine, thereby limiting the maximum retraction stroke of the positioning structure 21. For thin-walled, easily deformable electric iron accessories, the maximum retraction stroke of the positioning structure 21 can be reduced by increasing the extension of the movable part 283 into the socket cavity 271. For thick-walled, high-rigidity heavy electric iron accessories, the maximum retraction stroke of the positioning structure 21 can be increased by reducing the extension of the movable part 283 into the socket cavity 271, thereby simultaneously increasing the output thrust of the positioning structure 21 and adapting to the rapid handling of workpieces of different specifications. Positioning and changing; the movement of the movable part 283 is guided by the movable limiting hole 274 to ensure the straightness of the movement of the movable part 283; the abutment state of the positioning structure 21 is detected by the second sensor 284. When the workpiece pushes the positioning structure 21 back to abut the movable part 283, the second sensor 284 triggers a signal, and the signal conversion device 6 automatically controls the second motor 1112 to stop driving, realizing the centering and clamping of the workpiece, avoiding over-clamping and deformation of the workpiece. At the same time, it can automatically complete the positioning and locking of workpieces of different widths without the need for manual measurement of the clamping distance, improving the clamping efficiency and adaptability of electric iron accessories of different specifications.

[0108] The second elastic drive component 272 is preferably a compression spring, and the second sensor 284 is preferably a pressure sensor. The compression spring can output a linear and stable pushing force, which is convenient to match the pushing and clamping requirements of the positioning structure 21. At the same time, it has excellent fatigue resistance and can be adapted to the frequent clamping conditions of batch welding of electric iron accessories. The pressure sensor adopts contact pressure detection, which can capture the contact pressure between the positioning structure 21 and the moving part 283. The trigger threshold is adjustable, and the detection result is not affected by complex working conditions such as welding spatter and workshop dust. The signal triggering is stable and reliable.

[0109] When adjusting the position of the movable part 283, rotating the second rotary force-applying handle 282 clockwise or counterclockwise causes the third screw 281 to rotate synchronously in the circumferential direction. The third screw 281 is threaded into the movable part 283. Under the circumferential limiting effect of the movable limit hole 274, the movable part 283 cannot rotate synchronously with the third screw 281, but can only move linearly back and forth along the axial direction of the movable limit hole 274. A second sensor 284 is pre-installed on the end face of the movable part 283 facing the socket cavity 271. During the movement of the movable part 283, the second sensor 284 is synchronously adjusted in axial position, and its insertion length within the socket cavity 271 is also adjusted, changing the maximum retraction stroke limit point of the positioning structure 21. This limit point serves as the signal trigger reference for the second sensor 284. The extension of the movable part 283 into the socket cavity 271... The larger the input, the shorter the retractable stroke of the positioning structure 21, the smaller the compression of the second elastic drive member 272, and the smaller the pushing force output by the positioning structure 21. Conversely, the smaller the insertion of the movable part 283 into the sleeve cavity 271, the longer the retractable stroke of the positioning structure 21, the greater the compression of the second elastic drive member 272, and the greater the pushing force output by the positioning structure 21. Thus, the maximum retraction stroke of the positioning structure 21 and the pre-adjustment of the pushing force can be synchronously achieved through the axial displacement of the movable part 283. In subsequent clamping operations, when the workpiece pushes the positioning structure 21 back to the moment it abuts the second sensor 284, the second sensor 284 transmits the collected pressure signal to the signal conversion device 6 in real time. After processing by the signal conversion device 6, a stop command is immediately sent to the second motor 1112 to control the second motor 1112 to stop driving.

[0110] See Figure 1 , Figure 3 Furthermore, the welding device body 1 is provided with a moving platform 12, a rotating platform 13, a third motor 14, a welding torch mounting bracket 15 and a welding torch 16. The moving platform 12 can move relative to the welding device body 1 in a first horizontal direction.

[0111] The rotating platform 13 is mounted on the top of the moving platform 12, and the third motor 14 is drivenly connected to the rotating platform 13. The third motor 14 is used to drive the rotating platform 13 to rotate relative to the moving platform 12.

[0112] The iron accessory bearing structure 11 is assembled on the rotating table 13 and rotates synchronously with the rotating table 13;

[0113] The welding torch mounting bracket 15 can move relative to the welding device body 1 along the first horizontal direction; the welding torch mounting bracket 15 is provided with a guide rail 151, which extends along the second horizontal direction; the mounting end of the welding torch 16 is slidably engaged with the guide rail 151.

[0114] The moving table 12 drives the iron accessory bearing structure 11 to move along the first horizontal direction, and the rotating table 13 drives the workpiece to rotate 360°. Welding of multi-faceted and multi-angle welds of the workpiece can be completed in one clamping, without repeated clamping and positioning, avoiding the accuracy deviation caused by multiple clamping. The welding torch mounting frame 15 moves in the first horizontal direction and slides in the second horizontal direction with the guide rail 151, which can realize a wide range of movement of the welding torch 16 in the horizontal plane. It can adapt to electric iron accessories of different lengths, widths and weld trajectories, and improve the comprehensive adaptability of the device to electric iron accessories of different shapes.

[0115] Furthermore, the welding device body 1 is provided with a first transmission guide assembly 17 and a second transmission guide assembly 18; the first transmission guide assembly 17 includes a first rack 171, a first gear 172 and a fourth motor 173, the first rack 171 is arranged on the welding device body 1 along the first horizontal direction, the first gear 172 meshes with the first rack 171 and is driven by the fourth motor 173; the first gear 172 is mounted on the moving table 12, and the fourth motor 173 is used to drive the moving table 12 to move along the first horizontal direction;

[0116] The second transmission guide assembly 18 includes a second rack 181, a second gear 182, and a fifth motor 183. The second rack 181 is arranged on the welding device body 1 along the first horizontal direction. The second gear 182 meshes with the second rack 181 and is driven by the fifth motor 183. The second gear 182 is mounted on the welding torch mounting frame 15. The fifth motor 183 is used to drive the welding torch mounting frame 15 to move along the first horizontal direction.

[0117] Through the meshing transmission mode of the first gear 172 and the first rack 171, and the second gear 182 and the second rack 181, the transmission accuracy is high, the load-bearing capacity is strong, and the response speed is fast. It can accurately control the movement stroke and position of the moving table 12 and the welding torch mounting frame 15. Whether it is a short-stroke fine adjustment of small workpieces or a long-stroke movement of large ultra-long crossbeams, it can be precisely adapted. At the same time, the gear and rack transmission runs stably and can adapt to the complex working conditions of the welding workshop, ensuring the accuracy and stability of long-term use.

[0118] In the description of this specification, references to terms such as "one embodiment," "some embodiments," "example," "specific example," or "some examples," etc., indicate that a specific feature, structure, material, or characteristic described in connection with that embodiment or example is included in at least one embodiment or example of this application. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples. Moreover, without contradiction, those skilled in the art can combine and integrate the different embodiments or examples described in this specification, as well as the features of those different embodiments or examples.

[0119] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one of that feature. In the description of this application, "a plurality of" means two or more, unless otherwise explicitly specified.

[0120] The above description is merely a specific embodiment of this application, but the scope of protection of this application is not limited thereto. Any person skilled in the art can easily conceive of various variations or substitutions within the technical scope disclosed in this application, and these should all be included within the scope of protection of this application. Therefore, the scope of protection of this application should be determined by the scope of the claims.

Claims

1. A welding apparatus for electric railway accessories, characterized in that, include: The welding device body (1) is provided with an iron accessory bearing structure (11). Multiple clamping units (2) are installed on the iron accessory bearing structure (11); at least two of the multiple clamping units (2) form a clamping group, and the clamping units (2) located in the same clamping group can be close to or far from each other; The clamping unit (2) is provided with at least one positioning structure (21) and at least two swing clamping structures (22); the positioning structure (21) moves with the clamping unit (2) and cooperates with the positioning structure (21) of another clamping unit (2) in the same clamping group to clamp iron accessories. The swing clamping structure (22) is provided with a transmission part (221) and a clamping part (222). The transmission part (221) is pivotally connected to the clamping unit (2) so that the clamping part (222) can swing relative to the positioning structure (21). A swing drive device (3) is installed on the clamping unit (2); each of the transmission parts (221) of the same clamping unit (2) is connected to the swing drive device (3) through a torque limiting structure (4); the swing drive device (3) is used to drive each of the clamping parts (222) to swing toward or away from the iron attachment; the torque limiting structure (4) is used to transmit torque to the corresponding transmission part (221) and limit the transmission torque; the transmission part (221) disengages from the corresponding torque limiting structure (4) as the clamping part (222) abuts against the iron attachment.

2. The welding apparatus for electric railway accessories according to claim 1, characterized in that, The clamping unit (2) has a mounting cavity (23) with a top opening; the bottom of the mounting cavity (23) is provided with a rotating seat (231) and at least two first rotating grooves (232). The swing drive device (3) includes a worm (31), at least two worm wheels (32) and a first motor (33). The worm (31) is mounted on the rotating seat (231), and the first motor (33) is drivenly connected to the worm (31). Two first rotating slots (232) are arranged opposite each other along the radial direction of the worm (31), and each worm wheel (32) is embedded in the corresponding first rotating slot (232), and each worm wheel (32) meshes with the worm (31) for transmission. The clamping unit (2) is equipped with a cover plate (24), which is detachably mounted on the clamping unit (2) and is used to cover the opening of the mounting cavity (23); The clamping unit (2) has a clearance groove (25) corresponding to each of the swing clamping structures (22), and each of the clamping parts (222) extends to the outside of the clamping unit (2) through the corresponding clearance groove (25).

3. The welding apparatus for electric railway accessories according to claim 2, characterized in that, The torque limiting structure (4) includes a slip-out force-applying part (41), a slip-out force-receiving part (42), and a first elastic drive member (43); the slip-out force-applying part (41) is mounted on the worm gear (32), and the slip-out force-receiving part (42) is mounted on the transmission part (221); the slip-out force-applying part (41) abuts against the slip-out force-receiving part (42), and the slip-out force-applying part (41) is used to transmit the torque of the worm gear (32) to the slip-out force-receiving part (42); The first elastic drive member (43) is driven to connect with the slipperable force receiving part (42), and the first elastic drive member (43) is used to provide the slipperable force receiving part (42) with a driving force that abuts against the slipperable force applying part (41); The detachable force-applying part (41) is provided with a plurality of first detachable bosses (411), which are arranged at intervals along the circumference of the worm gear (32); the first detachable bosses (411) are provided with a first detachable inclined surface (412), which extends inclinedly in the opposite direction to the rotation direction of the worm gear (32). The detachable force-bearing part (42) is provided with a second detachable boss (421) and a second detachable inclined surface (422). The second detachable boss (421) and the second detachable inclined surface (422) are mirror images of the first detachable boss (411) and the first detachable inclined surface (412). The first detachable inclined surface (412) and the second detachable inclined surface (422) abut against each other and form a sliding friction fit.

4. A welding apparatus for electric railway accessories according to claim 3, characterized in that, The bottom of the cover plate (24) is provided with guide posts (241) corresponding to each of the transmission parts (221). The guide posts (241) extend along the sliding direction corresponding to the detachable force receiving part (42) and the detachable force applying part (41). The guide posts (241) are provided with a first limiting guide groove (2411), which extends along the length direction of the guide posts (241). The transmission part (221) is provided with a guide through hole (2211) and a second rotation groove (2212); the transmission part (221) is rotatably sleeved on the outer peripheral surface of the guide column (241) through the guide through hole (2211); The first elastic drive member (43) is a spring (431), which is arranged along the length of the guide column (241); one end of the spring (431) is a force-applying end (4311) and the other end is an adjusting end (4312). The force-applying end (4311) abuts against the slidable force-receiving part (42) and is embedded in the second rotation groove (2212); the adjusting end (4312) is slidably engaged with the first limiting guide groove (2411), which is used to limit the rotation and guide the extension of the adjusting end (4312). The clamping unit (2) is provided with a first adjustment structure (26) corresponding to each of the torque limiting structures (4), and the first adjustment structure (26) is used to adjust the preload of the corresponding spring (431).

5. A welding apparatus for electric railway accessories according to claim 4, characterized in that, The first adjustment structure (26) includes a first screw (261) and a first rotary force-applying handle (262); the cover plate (24) is provided with a first adjustment hole (242) corresponding to each of the first adjustment structures (26), and the first adjustment hole (242) penetrates the cover plate (24) along the thickness direction of the cover plate (24); one end of the first screw (261) extends into the mounting cavity (23) through the corresponding first adjustment hole (242) and is threadedly connected to the corresponding adjustment end (4312); the other end of the first screw (261) is assembled with the first rotary force-applying handle (262); The clamping unit (2) is equipped with at least two first sensors (5) and a signal conversion device (6). Each first sensor (5) is mounted on the corresponding detachable force-applying part (41). The first sensor (5) is used to detect whether the corresponding detachable force-receiving part (42) is detached from the detachable force-applying part (41). The first sensor (5) is signal-connected to the signal conversion device (6), and the first motor (33) is electrically connected to the signal conversion device (6).

6. A welding apparatus for electric railway accessories according to claim 5, characterized in that, The side wall of the clamping unit (2) is provided with a sleeve (27), which is located between the two swing clamping structures (22) of the clamping unit (2); one end of the sleeve (27) extends to the outer side wall of the clamping unit (2), and the other end of the sleeve (27) extends into the mounting cavity (23). The socket (27) has a socket cavity (271), which extends through the socket (27) along the length of the positioning structure (21) to one end of the outer side wall of the clamping unit (2), and the positioning structure (21) is slidably sleeved in the socket cavity (271); The socket cavity (271) is provided with a second elastic drive member (272). The two ends of the second elastic drive member (272) are respectively fitted to one end of the positioning structure (21) that extends into the socket cavity (271) and the inner end wall of the socket cavity (271). The second elastic drive member (272) is used to provide the positioning structure (21) with a pushing force for the pushing iron attachment. The outer peripheral surface of the socket (27) is provided with a limiting groove (273), the limiting groove (273) extends along the length direction of the positioning structure (21) and communicates with the socket cavity (271); the outer peripheral surface of the positioning structure (21) is provided with a limiting protrusion (211), the limiting protrusion (211) is embedded in the limiting groove (273) and slides in cooperation with the limiting groove (273), the limiting protrusion (211) is used to prevent the positioning structure (21) from sliding out of the socket cavity (271). The clamping unit (2) is provided with a second adjustment structure (28), which is used to adjust the magnitude of the pushing force provided by the second elastic drive member (272).

7. A welding apparatus for electric railway accessories according to claim 6, characterized in that, The iron accessory bearing structure (11) is provided with a plurality of translation drive devices (111), each of the translation drive devices (111) being used to drive the corresponding clamping unit (2) to move in the length direction of the positioning structure (21); The translation drive device (111) includes a second screw (1111) and a second motor (1112). The second screw (1111) extends along the length direction of the corresponding positioning structure (21). The second screw (1111) is rotatably mounted on the iron accessory bearing structure (11). The second motor (1112) is drivenly connected to the second screw (1111). The iron accessory bearing structure (11) is provided with a second limiting guide groove (112) corresponding to each of the translation drive devices (111), and the second limiting guide groove (112) extends along the axial direction of the corresponding second screw (1111); The clamping unit (2) is equipped with a transmission seat (7), which is embedded in the second limiting guide groove (112) and slides in cooperation with the second limiting guide groove (112); the transmission seat (7) has a threaded transmission hole (71) adapted to the second screw (1111), the second screw (1111) passes through the threaded transmission hole (71) and is threaded in cooperation with the threaded transmission hole (71).

8. A welding apparatus for electric railway accessories according to claim 7, characterized in that, The second adjustment structure (28) includes a third screw (281), a second rotary force-applying handle (282), a movable part (283), and a second sensor (284); the clamping unit (2) has a second adjustment hole (29) on one side wall that is horizontally opposite to the sleeve part (27), and the second adjustment hole (29) extends through the length of the positioning structure (21) to the mounting cavity (23); one end of the third screw (281) extends into the mounting cavity (23) through the second adjustment hole (29), and the other end of the third screw (281) is assembled with the second rotary force-applying handle (282); The socket (27) is provided with a movable limiting hole (274) at one end of the mounting cavity (23). The movable limiting hole (274) extends through the socket (271) along the length of the positioning structure (21). One end of the movable part (283) extends into the socket (271) and slides with the movable limiting hole (274). The end of the movable part (283) extending into the socket (271) is used to abut against the positioning structure (21). The third screw (281) is threadedly engaged with the movable part (283); the second sensor (284) is mounted on one end of the movable part (283) that extends into the sleeve cavity (271), and the second sensor (284) is used to detect whether the positioning structure (21) abuts against the movable part (283). The second sensor (284) is signal-connected to the signal conversion device (6), and the second motor (1112) is electrically connected to the signal conversion device (6).

9. A welding apparatus for electric railway accessories according to claim 1, characterized in that, The welding device body (1) is provided with a moving platform (12), a rotating platform (13), a third motor (14), a welding torch mounting bracket (15) and a welding torch (16). The moving platform (12) can move relative to the welding device body (1) in a first horizontal direction. The rotary table (13) is mounted on the top of the movable table (12), and the third motor (14) is driven to the rotary table (13). The third motor (14) is used to drive the rotary table (13) to rotate relative to the movable table (12). The iron accessory bearing structure (11) is assembled on the rotary table (13) and rotates synchronously with the rotary table (13); The welding torch mounting bracket (15) can move relative to the welding device body (1) along the first horizontal direction; the welding torch mounting bracket (15) is provided with a guide rail (151), which extends along the second horizontal direction; the mounting end of the welding torch (16) is slidably engaged with the guide rail (151).

10. A welding apparatus for electric railway accessories according to claim 9, characterized in that, The welding device body (1) is provided with a first transmission guide assembly (17) and a second transmission guide assembly (18); the first transmission guide assembly (17) includes a first rack (171), a first gear (172) and a fourth motor (173), the first rack (171) is arranged on the welding device body (1) along the first horizontal direction, the first gear (172) meshes with the first rack (171) and is driven by the fourth motor (173); the first gear (172) is mounted on the moving table (12), and the fourth motor (173) is used to drive the moving table (12) to move along the first horizontal direction; The second transmission guide assembly (18) includes a second rack (181), a second gear (182), and a fifth motor (183). The second rack (181) is arranged on the welding device body (1) along the first horizontal direction. The second gear (182) meshes with the second rack (181) and is driven by the fifth motor (183). The second gear (182) is mounted on the welding torch mounting frame (15). The fifth motor (183) is used to drive the welding torch mounting frame (15) to move along the first horizontal direction.

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