Auxiliary clamp for welding

Abstract

The invention discloses a welding assisting clamp, and belongs to the technical field of thick plate welding, the welding assisting clamp comprises a plurality of working platforms, two pairs of fixed clamps and movable clamps are arranged on the working platforms, each of the fixed clamps and the movable clamps comprises a sliding supporting box, and the middle part of each sliding supporting box is rotatably connected with an overturning supporting box; a transmission supporting box is installed in the middle of the overturning supporting box in an embedded mode, a first ring frame and a second ring frame are rotatably connected to the middle of the transmission supporting box in an embedded mode, two first supporting blocks are installed on the inner circumference of the first ring frame, two second supporting blocks are installed on the inner circumference of the second ring frame, and clamping blocks are hinged to the first supporting blocks and the second supporting blocks; a driving mechanism is arranged on one side of the working platform, a three-axis sliding table is installed on the periphery of the working platform, different welding machines are spliced and installed at the working end of the three-axis sliding table through a welding machine installation frame, high-standard and high-consistency welding quality is kept, the stability of the ship thick plates is kept, the ship thick plates with different thicknesses are adapted, and the loading and unloading efficiency is improved.

Description

Technical Field

[0001] This invention relates to the field of thick plate welding technology, specifically a welding auxiliary fixture. Background Technology

[0002] Ships are vehicles that can navigate or anchor in waterways for transportation or operations. They have different technical performance, equipment, and structural types depending on their usage requirements. In the process of shipbuilding, welding of thick plates is an essential task, and fixing and clamping devices are usually used during the welding of thick plates.

[0003] Application document with publication number CN113732607A discloses a welding and fixing clamping device for ship thick plates, including: a support platform; a movable seat is provided on both the front and rear sides of the upper surface of the support platform, and the upper surface of the support platform has an L-shaped structure, and a support wheel is installed at the bottom of each movable seat to contact the upper surface of the support platform; two rotating support parts are installed on the upper surface of each movable seat.

[0004] Based on the aforementioned patents and existing technologies, it can be concluded that the aforementioned patents cannot clamp and weld ultra-long ship plates during operation, and the welding structure of the aforementioned patents needs to constantly adjust its welding trajectory to adapt to two mutually perpendicular welding stations, resulting in severe structural wear and inconsistent welding quality. Summary of the Invention

[0005] The purpose of this invention is to address the aforementioned problems and shortcomings by providing a welding auxiliary fixture that improves overall work efficiency.

[0006] This invention solves at least one of the following technical problems:

[0007] (1) The above-mentioned patent cannot perform clamping and welding on ultra-long ship plates during operation;

[0008] (2) The welding structure of the above patent needs to constantly adjust its welding trajectory to adapt to two mutually perpendicular welding stations. The structure wears out severely and the welding quality cannot be kept consistent.

[0009] The objective of this invention can be achieved through the following technical solution: A welding auxiliary fixture includes a working platform, which has multiple fixtures. The working platform has two pairs of fixed fixtures and movable fixtures. Both the fixed and movable fixtures include a sliding support box. A flip support box is rotatably connected to the middle of the sliding support box. A transmission support box is embedded in the middle of the flip support box. A first ring frame and a second ring frame are embedded in and rotatably connected to the middle of the transmission support box. Two first support blocks are installed on the inner circumference of the first ring frame, and two second support blocks are installed on the inner circumference of the second ring frame. Clamping blocks are hinged to both the first and second support blocks. A driving mechanism is provided on one side of the working platform. A three-axis slide is installed on the outer circumference of the working platform. Different welding machines are spliced ​​and installed at the working end of the three-axis slide via a welding machine mounting frame.

[0010] Preferably, there are two work platforms arranged side by side, each with a pair of fixed clamps and a pair of movable clamps that are symmetrical to each other. The fixed clamps are fixedly installed on the work platforms, and the movable clamps are slidably connected to the work platforms.

[0011] Preferably, a plurality of first support gears are rotatably connected inside the sliding support box and on the outer periphery of the flip support box, and the first support gears mesh with and are rolled in connection with the outer periphery of the flip support box.

[0012] Preferably, several pairs of second support gears are rotatably connected inside the transmission support box and on the outer periphery of the first and second ring frames. Each pair of second support gears corresponds to the first and second ring frames respectively, meshes with each other, and is rolled and connected.

[0013] Preferably, a clamping motor is installed at the lower part of the transmission support box. A first drive wheel set and a second drive wheel set are respectively installed at both ends of the drive shaft of the clamping motor. Both the first drive wheel set and the second drive wheel set include a first gear. The first gear is installed at the end of the drive shaft of the clamping motor. A first bracket is provided on one side of the first gear. A second gear is rotatably sleeved on the first bracket. A third gear is provided below the first bracket. Transmission bevel gears are installed at the ends of the third gear and the second gear, respectively. The third gear and the second gear are transmitted through the meshing of the installed transmission bevel gears. A toothed rotating rod is provided on one side of the third gear. A fourth gear is provided on one side of the toothed rotating rod. The toothed rotating rod and the fourth gear are rotatably connected to the inner wall of the transmission support box. The second gear meshes with the first gear, the third gear and the toothed rotating rod, as well as the toothed rotating rod and the fourth gear. The fourth gear of the first drive wheel set meshes with the first ring frame, and the fourth gear of the second drive wheel set meshes with the second ring frame.

[0014] Preferably, the clamping block is elastically hinged to the first support block and the second support block respectively via an elastic rotating shaft. An anti-pressure pad is installed on the bottom surface of the clamping block, and elastic support rods are installed on the bottom surface of the clamping block and on both sides of the anti-pressure pad. An attitude roller is hinged to the telescopic end of the elastic support rod.

[0015] Preferably, the drive mechanism includes a drive motor, which is located on one side of the work platform. A first transmission box is installed at both ends of the drive motor, and a third transmission box is provided at both ends of the work platform. The first and third transmission boxes are connected through a second transmission box. A pair of clutches is provided between each moving fixture and the third transmission box. A transmission gearbox is installed at the output end of the clutch. The transmission gearbox contains several meshing gears. A keyed transmission rod is installed at the output end of one of the transmission gearboxes, and a transmission screw is installed at the output end of the other transmission gearbox.

[0016] Preferably, a first transmission rod is rotatably connected in the first transmission box, and the first transmission rod is fixedly connected to the drive shaft of the drive motor. A second transmission rod is rotatably connected in the third transmission box. Both the ends of the first and second transmission rods located in the second transmission box are equipped with bevel gears, and the bevel gears mesh with each other.

[0017] Preferably, bevel gears are installed on the second transmission rod and the output end of the corresponding clutch, and transmission is achieved through the meshing of the corresponding bevel gears.

[0018] Preferably, a threaded sleeve is fixedly inserted on one side of the lower interior of the sliding support box, and a keyed sleeve is inserted and rotatably connected on the other side of the lower interior of the sliding support box. The threaded sleeve is threaded onto the transmission screw, and the keyed sleeve is keyed and slidably sleeved onto the keyed transmission rod. A flipping gear is fixedly sleeved on the outer periphery of the keyed sleeve, and the flipping gear meshes with the flipping support box.

[0019] The beneficial effects of this invention are:

[0020] (1) During operation, the three-axis slide table runs in the alternating clamping sequence, thereby welding the clamped ship thick plates in an orderly and fast manner, thus rapidly increasing the welding quantity. The three-axis slide table moves the welding machine linearly and periodically back and forth, thereby maintaining high standard and high consistency welding quality. The two-end clamping method maintains the positioning of the ship thick plates, which is more stable than the single-point support method in the middle, adapting to ship thick plates of different thicknesses, simplifying the clamping process, and improving loading and unloading efficiency.

[0021] (2) During operation, the pressure pad block abuts against the ship's thick plate. During the abutment process, the attitude roller on one side first abuts against the surface of the ship's thick plate. Then, the reaction force during the abutment is used to adjust the attitude of the clamping block so that the clamping block always abuts against the surface of the ship's thick plate with its bottom surface, thus avoiding damage to the surface of the ship's thick plate during clamping.

[0022] (3) When it is necessary to adjust the distance between the moving fixture and the fixed fixture, power is obtained from the drive motor through the clutch and transmission gearbox corresponding to the transmission screw, and the transmission screw is rotated. When it is necessary to flip the ship's thick plate and weld the reverse side, power is obtained from the drive motor through the clutch and transmission gearbox corresponding to the keying transmission rod, and the keying sleeve and flipping gear are driven by rotating the keying transmission rod, which reduces the number of motors, energy consumption and failure rate. Attached Figure Description

[0023] To facilitate understanding by those skilled in the art, the present invention will be further described below with reference to the accompanying drawings.

[0024] Figure 1 This is a top view of the overall structure of the present invention;

[0025] Figure 2 This is a side view of the overall structure of the movable clamp of the present invention;

[0026] Figure 3 This is a side view of the internal structure of the movable clamp of the present invention;

[0027] Figure 4 for Figure 2 A sectional view of section AA in the middle;

[0028] Figure 5 for Figure 3 Enlarged view of region B in the middle;

[0029] Figure 6 for Figure 3 Enlarged view of region C in the middle;

[0030] Figure 7 This is a top view of the internal structure of the drive mechanism of the present invention;

[0031] Figure 8 for Figure 7 Enlarged schematic diagram of region D in the middle;

[0032] In the diagram: 101. Working platform; 102. Fixed clamp; 103. Moving clamp; 104. Drive mechanism; 105. Three-axis slide table; 106. Welding machine mounting frame; 201. Sliding support box; 202. Tilting support box; 203. Transmission support box; 204. First ring frame; 205. Second ring frame; 206. First support block; 207. Second support block; 208. Clamping block; 209. First support gear; 210. Second support gear; 211. Clamping motor; 212. First gear; 213. First bracket; 214. Second gear; 215. Transmission bevel gear; 216. 217. Third gear; 218. Toothed rotating rod; 219. Fourth gear; 220. Elastic rotating shaft; 221. Anti-compression pad; 222. Elastic support rod; 223. Posture roller; 224. Threaded sleeve; 225. Keyed sleeve; 301. Reversing gear; 302. Drive motor; 303. First transmission box; 304. Second transmission box; 305. First transmission rod; 306. Second transmission rod; 307. Clutch; 308. Transmission gearbox; 309. Keyed transmission rod; 310. Transmission screw; 401. First drive wheel set; 402. Second drive wheel set. Detailed Implementation

[0033] The specific embodiments of the present invention will be described in detail below, but it should be understood that the scope of protection of the present invention is not limited to the specific embodiments.

[0034] Please see Figure 1-8As shown: A welding auxiliary fixture includes a work platform 101. The work platform 101 has two pairs of fixed clamps 102 and movable clamps 103 arranged side-by-side, each pair symmetrically arranged. The fixed clamps 102 are fixedly mounted on the work platform 101, and the movable clamps 103 are slidably connected to the work platform 101. The work platform 101 has two pairs of fixed clamps 102 and movable clamps 103. Both the fixed clamps 102 and movable clamps 103 include a sliding support box 201. A flip support box 202 is rotatably connected to the middle of the sliding support box 201. A transmission support box 203 is embedded in the middle of the flip support box 202. A first ring frame 204 and a second ring frame 205 are embedded in and rotatably connected to the middle of the transmission support box 203. Two first support blocks 206 are installed on the inner circumference of the first ring frame 204, and two first support blocks 206 are installed on the inner circumference of the second ring frame 205. Two second support blocks 207, a first support block 206, and a second support block 207 are hinged with clamping blocks 208. A drive mechanism 104 is provided on one side of the work platform 101. A three-axis slide table 105 is installed on the outer periphery of the work platform 101. Different welding machines are spliced ​​and installed at the working end of the three-axis slide table 105 through a welding machine mounting frame 106. Several first support gears 209 are rotatably connected inside the sliding support box 201 and on the outer periphery of the flip support box 202. The first support gears 209 mesh with and are rolled to the outer periphery of the flip support box 202. Several pairs of second support gears 210 are rotatably connected inside the transmission support box 203 and on the outer periphery of the first ring frame 204 and the second ring frame 205. Each pair of second support gears 210 corresponds to the first ring frame 204 and the second ring frame 205 respectively, meshes with each other, and is rolled to drive each other.

[0035] In this embodiment, the ship's thick plates are alternately clamped by two working platforms 101. The welding machine mounted on the welding machine mounting frame 106 is moved by the three-axis slide table 105 to weld the clamped ship's thick plates in the alternating clamping sequence of the two working platforms 101. The parallel arrangement of the working platforms 101 allows for the continuous addition of the number of parallel working platforms 101 to one side. The three-axis slide table 105 operates in the alternating clamping sequence, thereby welding the clamped ship's thick plates in an orderly and rapid manner, thus rapidly increasing the welding quantity. The overall movement of the welding machine by the three-axis slide table 105 is linear and cyclical, thereby maintaining high standards and high consistency of welding quality.

[0036] During operation, based on the length of the ship's thick plate, the distance between the movable clamp 103 and the corresponding fixed clamp 102 is first increased to facilitate the placement of the ship's thick plate. Then, the distance is reduced to clamp the ship's thick plate. This method of clamping at both ends maintains the positioning of the ship's thick plate, which is more stable than the method of single-point support in the middle. By rotating the first ring frame 204 and the second ring frame 205 in the opposite direction, the corresponding first support block 206 and second support block 207 move closer to each other and clamp the ship's thick plate. This adapts to ship thick plates of different thicknesses, simplifies the clamping process, and improves loading and unloading efficiency.

[0037] A clamping motor 211 is installed at the lower part of the transmission support box 203. A first drive wheel set 401 and a second drive wheel set 402 are respectively installed at both ends of the drive shaft of the clamping motor 211. Both the first drive wheel set 401 and the second drive wheel set 402 include a first gear 212, which is mounted on the end of the drive shaft of the clamping motor 211. A first bracket 213 is provided on one side of the first gear 212. A second gear 214 is rotatably sleeved on the first bracket 213. A third gear 216 is provided below the first bracket 213. Transmission bevel gears 215 are installed at the ends of the third gear 216 and the second gear 214, respectively. The third gear 216 and the second gear 214 are transmitted through the meshing of the installed transmission bevel gears 215. A toothed rotating rod 217 is provided on one side of the third gear 216, and a toothed rotating rod 217 is provided on one side of... The fourth gear 218, the toothed rotating rod 217, and the fourth gear 218 are all rotatably connected to the inner wall of the transmission support box 203. The second gear 214 meshes with the first gear 212, the third gear 216, the toothed rotating rod 217, and the toothed rotating rod 217 and the fourth gear 218. The fourth gear 218 of the first drive wheel set 401 meshes with the first ring frame 204. The fourth gear 218 of the second drive wheel set 402 meshes with the second ring frame 205. The clamping block 208 is elastically hinged to the first support block 206 and the second support block 207 respectively through the elastic rotating shaft 219. The bottom surface of the clamping block 208 is equipped with an anti-pressure pad 220. The bottom surface of the clamping block 208 and the two sides of the anti-pressure pad 220 are respectively equipped with elastic support rods 221. The telescopic end of the elastic support rod 221 is hinged with a posture roller 222.

[0038] In this embodiment, by utilizing the symmetry of the rotation of the two ends of the drive shaft of the clamping motor 211, the first drive wheel set 401 and the second drive wheel set 402 are rotated in a symmetrical rotation direction, thereby causing the first ring frame 204 and the second ring frame 205 to rotate symmetrically. The first gear 212 sequentially drives the second gear 214, the third gear 216, the toothed rotating rod 217 and the fourth gear 218, thereby driving the corresponding first ring frame 204 and the second ring frame 205, and causing the first ring frame 204 and the second ring frame 205 to rotate symmetrically.

[0039] During operation, the pressure-resistant pad 220 abuts against the ship's thick plate. During the abutment process, the posture roller 222 on one side first abuts against the surface of the ship's thick plate, and then uses the reaction force during the abutment to adjust the posture of the clamping block 208, so that the clamping block 208 always abuts against the surface of the ship's thick plate with its bottom surface, thus avoiding damage to the surface of the ship's thick plate during clamping.

[0040] The drive mechanism 104 includes a drive motor 301, which is located on one side of the work platform 101. First transmission boxes 302 are mounted at both ends of the drive motor 301, and third transmission boxes 304 are located at both ends of the work platform 101. The first transmission boxes 302 and third transmission boxes 304 are connected via second transmission boxes 303. A pair of clutches 307 is provided between each moving clamp 103 and the third transmission box 304. A transmission gearbox 308 is mounted at the output end of each clutch 307. The transmission gearbox 308 contains several meshing gears. A keyed transmission rod 309 is mounted at the output end of one of the transmission gearboxes 308, and a transmission screw 310 is mounted at the output end of the other transmission gearbox 308. A first transmission rod 305 is rotatably connected to the first transmission box 302. The first transmission rod 305 and the drive mechanism 304 are connected to the first transmission box 302. The drive shaft of motor 301 is fixedly connected. A second transmission rod 306 is rotatably connected in the third transmission box 304. The ends of the first transmission rod 305 and the second transmission rod 306 located in the second transmission box 303 are both equipped with bevel gears and the bevel gears mesh with each other. Bevel gears are also installed on the second transmission rod 306 and the output end of the corresponding clutch 307 and are transmitted through the corresponding meshing of the bevel gears. A threaded sleeve 223 is fixedly inserted through one side of the lower interior of the sliding support box 201. A keyed sleeve 224 is inserted through and rotatably connected to the other side of the lower interior of the sliding support box 201. The threaded sleeve 223 is threadedly sleeved on the transmission screw 310. The keyed sleeve 224 is keyedly and slidably sleeved on the keyed transmission rod 309. A flip gear 225 is fixedly sleeved on the outer periphery of the keyed sleeve 224 and meshes with the flip support box 202.

[0041] In this embodiment, power is provided by the drive motor 301. When it is necessary to adjust the distance between the moving clamp 103 and the fixed clamp 102, power is obtained from the drive motor 301 through the clutch 307 and the transmission gearbox 308 corresponding to the transmission screw 310, and the transmission screw 310 is rotated. When it is necessary to flip the ship plate and weld the reverse side, power is obtained from the drive motor 301 through the clutch 307 and the transmission gearbox 308 corresponding to the keying transmission rod 309, and the keying sleeve 224 and the flipping gear 225 are driven by rotating the keying transmission rod 309. The movement of the moving clamp 103 and the flipping of the ship plate are controlled by opening and closing the clutch 307, which reduces the number of motors, energy consumption and failure rate.

[0042] In summary, by operating the three-axis slide 105 in an alternating clamping sequence, the clamped ship plates can be welded in an orderly and rapid manner, thereby rapidly increasing the welding quantity. The three-axis slide 105 ensures that the overall movement of the welding machine is linear and cyclical, thus maintaining high-standard and highly consistent welding quality. The two-end clamping method maintains the positioning of the ship plates, which is more stable than the single-point support method in the middle, adapting to ship plates of different thicknesses, simplifying the clamping process, and improving loading and unloading efficiency.

[0043] During operation, the anti-pressure pad 220 abuts against the ship's thick plate. During the abutment process, the posture roller 222 on one side first abuts against the surface of the ship's thick plate, and then uses the reaction force during the abutment to adjust the posture of the clamping block 208 so that the clamping block 208 always abuts against the surface of the ship's thick plate with its bottom surface, thus avoiding damage to the surface of the ship's thick plate during clamping.

[0044] When it is necessary to adjust the distance between the moving clamp 103 and the fixed clamp 102, power is obtained from the drive motor 301 through the clutch 307 and the transmission gearbox 308 corresponding to the transmission screw 310, and the transmission screw 310 is rotated. When it is necessary to flip the ship's thick plate and weld the reverse side, power is obtained from the drive motor 301 through the clutch 307 and the transmission gearbox 308 corresponding to the keying transmission rod 309, and the keying sleeve 224 and the flipping gear 225 are driven by rotating the keying transmission rod 309, which reduces the number of motors, energy consumption and failure rate.

[0045] The above-disclosed embodiments are merely a few specific examples of the present invention. However, the embodiments of the present invention are not limited thereto, and any variations that can be conceived by those skilled in the art should fall within the protection scope of the present invention.

Claims

1. A welding auxiliary fixture, characterized in that, The system includes a work platform (101), which has multiple components. The work platform (101) has two pairs of fixed clamps (102) and movable clamps (103). Both the fixed clamps (102) and the movable clamps (103) include a sliding support box (201). A flip support box (202) is rotatably connected to the middle of the sliding support box (201). A transmission support box (203) is embedded in the middle of the flip support box (202). A first ring frame (204) and a second ring frame are embedded in and rotatably connected to the middle of the transmission support box (203). The frame (205) has two first support blocks (206) installed on the inner circumference of the first ring frame (204) and two second support blocks (207) installed on the inner circumference of the second ring frame (205). Both the first support blocks (206) and the second support blocks (207) are hinged with clamping blocks (208). A drive mechanism (104) is provided on one side of the working platform (101). A three-axis slide (105) is installed on the outer circumference of the working platform (101). Different welding machines are spliced ​​and installed at the working end of the three-axis slide (105) through the welding machine mounting frame (106).

2. The welding auxiliary fixture according to claim 1, characterized in that, The work platform (101) has two fixtures arranged side by side, each with a fixed fixture (102) and a movable fixture (103) symmetrical to each other. The fixed fixture (102) is fixedly installed on the work platform (101), and the movable fixture (103) is slidably connected to the work platform (101).

3. The welding auxiliary fixture according to claim 1, characterized in that, A plurality of first support gears (209) are rotatably connected inside the sliding support box (201) and on the outer periphery of the flip support box (202). The first support gears (209) mesh with and are rolled to the outer periphery of the flip support box (202).

4. A welding auxiliary fixture according to claim 1, characterized in that, The transmission support box (203) is rotatably connected to several pairs of second support gears (210) located inside the transmission support box (203) and on the outer periphery of the first ring frame (204) and the second ring frame (205). Each pair of second support gears (210) corresponds to the first ring frame (204) and the second ring frame (205) respectively, and they mesh with each other for transmission and rolling connection.

5. A welding auxiliary fixture according to claim 1, characterized in that, A clamping motor (211) is installed at the lower part of the transmission support box (203). A first drive wheel set (401) and a second drive wheel set (402) are respectively installed at both ends of the drive shaft of the clamping motor (211). Both the first drive wheel set (401) and the second drive wheel set (402) include a first gear (212). The first gear (212) is installed at the end of the drive shaft of the clamping motor (211). A first bracket (213) is provided on one side of the first gear (212). A second gear (214) is rotatably sleeved on the first bracket (213). A third gear (216) is provided below the first bracket (213). A transmission bevel gear (215) is installed at the end of the third gear (216) that is close to the second gear (214). The second gear (214) is driven by the meshing of the installed transmission bevel gear (215). The third gear (216) has a toothed rotating rod (217) on one side and a fourth gear (218) on one side. The toothed rotating rod (217) and the fourth gear (218) are rotatably connected to the inner wall of the transmission support box (203). The second gear (214) meshes with the first gear (212), the third gear (216), the toothed rotating rod (217), and the toothed rotating rod (217) and the fourth gear (218). The fourth gear (218) of the first drive wheel set (401) meshes with the first ring frame (204). The fourth gear (218) of the second drive wheel set (402) meshes with the second ring frame (205).

6. A welding auxiliary fixture according to claim 1, characterized in that, The clamping block (208) is elastically hinged to the first support block (206) and the second support block (207) respectively via an elastic rotating shaft (219). An anti-pressure pad (220) is installed on the bottom surface of the clamping block (208). Elastic support rods (221) are installed on the bottom surface of the clamping block (208) and on both sides of the anti-pressure pad (220). An attitude roller (222) is hinged to the telescopic end of the elastic support rod (221).

7. A welding auxiliary fixture according to claim 1, characterized in that, The drive mechanism (104) includes a drive motor (301), which is located on one side of the work platform (101). A first transmission box (302) is installed at both ends of the drive motor (301), and a third transmission box (304) is provided at both ends of the work platform (101). The first transmission box (302) and the third transmission box (304) are connected through a second transmission box (303). A pair of clutches (307) is provided between each moving fixture (103) and the third transmission box (304). A transmission gearbox (308) is installed at the output end of the clutch (307). A number of gears meshing with each other are provided in the transmission gearbox (308). A keyed transmission rod (309) is installed at the output end of one of the transmission gearboxes (308), and a transmission screw (310) is installed at the output end of the other transmission gearbox (308).

8. A welding auxiliary fixture according to claim 7, characterized in that, The first transmission box (302) is rotatably connected to the first transmission rod (305), and the first transmission rod (305) is fixedly connected to the drive shaft of the drive motor (301). The third transmission box (304) is rotatably connected to the second transmission rod (306). The ends of the first transmission rod (305) and the second transmission rod (306) located in the second transmission box (303) are both equipped with bevel gears, and the bevel gears mesh with each other.

9. A welding auxiliary fixture according to claim 8, characterized in that, Both the second transmission rod (306) and the output end of the corresponding clutch (307) are equipped with bevel gears, and transmission is achieved through the meshing of the corresponding bevel gears.

10. A welding auxiliary fixture according to claim 7, characterized in that, A threaded sleeve (223) is fixedly inserted through one side of the lower interior of the sliding support box (201), and a keying sleeve (224) is inserted through and rotatably connected to the other side of the lower interior of the sliding support box (201). The threaded sleeve (223) is threaded onto the transmission screw (310), and the keying sleeve (224) is keyed and slidably sleeved onto the keying transmission rod (309). A flipping gear (225) is fixedly sleeved on the outer periphery of the keying sleeve (224), and the flipping gear (225) meshes with the flipping support box (202).

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