A heat exchanger tube welding auxiliary fixture

Abstract

The utility model belongs to heat exchanger pipeline welding technical field discloses a kind of heat exchanger pipeline welding auxiliary fixture, including support frame, second motor drives second drive shaft and transmission gear rotation, transmission gear is rotated by tooth slot driving carousel, and then let the circular movement of the welding torch main body of carousel side around heat exchanger pipeline main body, the circumferential welding of pipeline butt joint place can be completed;Third electric telescopic link can flexibly adjust the distance of welding torch main body and pipeline, and the distance requirement of adaptation different welding process, such as argon arc welding, electric arc welding;At the same time, the through hole of mounting plate and carousel allows pipeline main body to pass through, ensure that pipeline does not need to move frequently in welding process, further improve welding continuity and uniformity, after welding, can let heat exchanger pipeline main body be transferred, and let the heat exchanger pipeline main body not welded move to welding position, so that the device can continuously weld and process pipeline, can greatly improve work efficiency.

Description

Technical Field

[0001] This utility model relates to the field of heat exchanger manufacturing technology, specifically a heat exchanger pipe welding auxiliary fixture. Background Technology

[0002] A heat exchanger is a common industrial device used to transfer heat between fluids. Heat exchangers typically consist of pipes and a shell. During installation, the pipes need to be welded into the shell to ensure the heat exchanger's proper functioning. The installation process involves first clamping and securing the shell, then inserting and welding the pipes into it. Welding the heat exchanger pipes is a crucial step in the installation process, as it determines the heat exchanger's sealing and stability.

[0003] Existing welding auxiliary fixtures require stacking two pipes to be welded and clamping them in place. After welding, workers need to remove the pipes and place another set of pipes, repeating the process. This makes continuous processing impossible and requires a considerable amount of time for workers to operate, making the work cumbersome and laborious. Therefore, we propose a heat exchanger pipe welding auxiliary fixture. Summary of the Invention

[0004] The purpose of this utility model is to solve the problems existing in the prior art and provide an auxiliary fixture for welding heat exchanger pipes.

[0005] The specific solution of this utility model is as follows: a heat exchanger pipe welding auxiliary fixture, including a support frame, two mounting seats fixedly installed on the top of the support frame, multiple rotating shafts rotatably installed on the inner side of the mounting seats, heat exchanger pipe conveying rollers fixedly installed on the outer side of the rotating shafts, two heat exchanger pipe bodies placed on the heat exchanger pipe conveying rollers, a first electric telescopic rod fixedly installed on one side of the mounting seats, a sliding frame fixedly installed at the output end of the first electric telescopic rod; the sliding frame is L-shaped, a second electric telescopic rod fixedly installed on the top of the sliding frame, and a pipe guide clamping plate fixedly installed at the output end of the second electric telescopic rod.

[0006] Preferably, the pipe guide clamping plate is V-shaped and fits snugly against the heat exchanger pipe body.

[0007] Preferably, a first motor is fixedly mounted on one side of the mounting base, a first drive shaft is fixedly mounted on the output end of the first motor, and bevel gears are fixedly mounted on the outer sides of both the first drive shaft and the rotating shaft, with adjacent bevel gears meshing with each other.

[0008] Preferably, a mounting plate is fixedly installed on the top of the support frame, a second motor is fixedly installed on one side of the mounting plate, a second drive shaft is fixedly installed on the output end of the second motor, and a turntable is rotatably installed on the left side of the mounting plate.

[0009] Preferably, a transmission gear is fixedly mounted on the outer side of the second drive shaft, and a toothed groove is formed around the outer side of the turntable, with the transmission gear meshing with the toothed groove.

[0010] Preferably, a fixing plate is fixedly installed on one side of the turntable, a third electric telescopic rod is fixedly installed on one side of the fixing plate, a welding gun body is fixedly installed at the output end of the third electric telescopic rod, a storage battery is fixedly installed on the fixing plate, and the welding gun body and the third electric telescopic rod are electrically connected to the storage battery.

[0011] Compared with the prior art, the present invention has the following advantages: 1. The first electric telescopic rod drives the sliding frame to move towards the pipeline, and the clamping position can be adjusted according to the pipeline spacing; for heat exchanger pipeline bodies of different diameters, the second electric telescopic rod drives the V-shaped pipeline guide clamping plate to rise and fall, so that the clamping plate fits tightly against the outer wall of the pipeline; the V-shaped structure can adapt to the curvature of the circular pipeline, avoid pipeline deviation during clamping, and at the same time play a guiding role, ensuring that the connection of the two pipeline bodies is accurately aligned with the welding gun body, solving the problem of "unstable clamping and large docking deviation" of traditional clamps, and providing a precise reference for subsequent welding;

[0012] 2. The second motor drives the second drive shaft and transmission gear to rotate. The transmission gear drives the turntable to rotate through the tooth groove, which in turn causes the welding torch body on one side of the turntable to make a circular motion around the heat exchanger pipe body, which can complete the circumferential welding of the pipe joint. The third electric telescopic rod can flexibly adjust the distance between the welding torch body and the pipe to adapt to the distance requirements of different welding processes such as argon arc welding and electric arc welding. At the same time, the through holes of the mounting plate and the turntable allow the pipe body to pass through, ensuring that the pipe does not need to be moved frequently during the welding process, further improving the continuity and uniformity of welding. After welding, the heat exchanger pipe body can be transferred, and the unwelded heat exchanger pipe body can be moved to the welding position, so that the device can continuously weld the pipes, which can significantly improve work efficiency. Attached Figure Description

[0013] Figure 1 This is a three-dimensional structural diagram of the present invention;

[0014] Figure 2 This is a three-dimensional structural diagram of the present invention;

[0015] Figure 3 This is a partial three-dimensional structural diagram of the mounting plate in this utility model;

[0016] Figure 4This is a partial three-dimensional structural diagram of the fixing plate, the third electric telescopic rod, and the main body of the welding gun in this utility model.

[0017] In the diagram: 1. Support frame; 2. Mounting base; 3. Rotating shaft; 4. Heat exchanger pipe conveying roller; 5. Heat exchanger pipe body; 6. First electric telescopic rod; 7. Sliding frame; 8. Second electric telescopic rod; 9. Pipe guide clamping plate; 10. First motor; 11. First drive shaft; 12. Bevel gear; 13. Mounting plate; 14. Second motor; 15. Second drive shaft; 16. Turntable; 17. Transmission gear; 18. Gear groove; 19. Fixing plate; 20. Third electric telescopic rod; 21. Welding torch body. Detailed Implementation

[0018] refer to Figures 1-4 A welding auxiliary clamp for heat exchanger pipes includes a support frame 1. Two mounting seats 2 are fixedly mounted on the top of the support frame 1. Multiple rotating shafts 3 are rotatably mounted on the inner side of the mounting seats 2. Heat exchanger pipe conveying rollers 4 are fixedly mounted on the outer side of the rotating shafts 3. Two heat exchanger pipe bodies 5 are placed on the heat exchanger pipe conveying rollers 4. A first electric telescopic rod 6 is fixedly mounted on one side of the mounting seats 2. A sliding frame 7 is fixedly mounted on the output end of the first electric telescopic rod 6. The first electric telescopic rod 6 drives the sliding frame 7 to move towards the pipe, and the clamping position can be adjusted according to the pipe spacing. This clamp is suitable for heat exchanger pipes of different diameters. The main body 5 and the second electric telescopic rod 8 drive the V-shaped pipe guide clamping plate 9 to rise and fall, so that the clamping plate fits tightly against the outer wall of the pipe. The V-shaped structure can adapt to the curvature of the circular pipe, avoid pipe deviation during clamping, and at the same time play a guiding role, ensuring that the connection of the two pipe bodies is accurately aligned with the welding gun body 21, solving the problem of "unstable clamping and large docking deviation" of traditional clamps, and providing a precise reference for subsequent welding. In this embodiment, the sliding frame 7 is L-shaped, and the second electric telescopic rod 8 is fixedly installed on the top of the sliding frame 7. The pipe guide clamping plate 9 is fixedly installed at the output end of the second electric telescopic rod 8.

[0019] In this embodiment, the pipe guide clamping plate 9 is V-shaped and fits against the heat exchanger pipe body 5. The second motor 14 drives the second drive shaft 15 and the transmission gear 17 to rotate. The transmission gear drives the turntable 16 to rotate through the tooth groove 18, thereby causing the welding torch body 21 on one side of the turntable to make a circular motion around the heat exchanger pipe body 5, which can complete the circumferential welding at the pipe joint. The third electric telescopic rod 20 can flexibly adjust the distance between the welding torch body 21 and the pipe to adapt to the distance requirements of different welding processes such as argon arc welding and electric arc welding. At the same time, the through holes of the mounting plate 13 and the turntable 16 allow the pipe body to pass through, ensuring that the pipe does not need to move frequently during the welding process, further improving the welding continuity and uniformity. In this embodiment, the first motor 10 is fixedly installed on one side of the mounting base 2, and the first drive shaft 11 is fixedly installed at the output end of the first motor 10. The outer sides of the first drive shaft 11 and the rotating shaft 3 are both fixedly installed with bevel gears 12, and adjacent bevel gears 12 mesh with each other.

[0020] In this embodiment, a mounting plate 13 is fixedly installed on the top of the support frame 1, a second motor 14 is fixedly installed on one side of the mounting plate 13, a second drive shaft 15 is fixedly installed at the output end of the second motor 14, and a turntable 16 is rotatably installed on the left side of the mounting plate 13. The first motor 10 drives the first drive shaft 11 to rotate, and drives the rotating shaft 3 to rotate synchronously with the heat exchanger pipe conveying roller 4 through the bevel gear 12, which can realize the automatic conveying of the heat exchanger pipe body 5. Before welding, the pipe is conveyed to the docking position, and after welding, the finished pipe is conveyed to the next process without manual handling. The mounting plate 13 is set in the middle of multiple conveying rollers so that the pipe is always conveyed during the welding process. The feed roller support prevents the pipe from sagging due to its own weight, thus avoiding deformation at the joint and ensuring a stable and continuous welding process, reducing downtime for adjustment. In this embodiment, a transmission gear 17 is fixedly installed on the outer side of the second drive shaft 15, and a toothed groove 18 is formed around the outer circumference of the turntable 16. The transmission gear 17 and the toothed groove 18 mesh with each other. In this embodiment, a fixing plate 19 is fixedly installed on one side of the turntable 16, and a third electric telescopic rod 20 is fixedly installed on one side of the fixing plate 19. A welding torch body 21 is fixedly installed at the output end of the third electric telescopic rod 20, and a storage battery is fixedly installed on the fixing plate 19. The welding torch body 21 and the third electric telescopic rod 20 are electrically connected to the storage battery.

[0021] Specifically, the first electric telescopic rod 6 drives the sliding frame 7 to move towards the pipeline, and the clamping position can be adjusted according to the pipeline spacing. For heat exchanger pipeline bodies 5 of different diameters, the second electric telescopic rod 8 drives the V-shaped pipeline guide clamping plate 9 to rise and fall, so that the clamping plate fits tightly against the outer wall of the pipeline. The V-shaped structure can adapt to the curvature of the circular pipeline, avoid pipeline deviation during clamping, and at the same time play a guiding role, ensuring that the connection of the two pipeline bodies is accurately aligned with the welding torch body 21, solving the problem of "unstable clamping and large docking deviation" of traditional clamps, and providing a precise reference for subsequent welding.

[0022] The second motor 14 drives the second drive shaft 15 and the transmission gear 17 to rotate. The transmission gear drives the turntable 16 to rotate through the tooth groove 18, which in turn causes the welding torch body 21 on one side of the turntable to make a circular motion around the heat exchanger pipe body 5, which can complete the circumferential welding at the pipe joint. The third electric telescopic rod 20 can flexibly adjust the distance between the welding torch body 21 and the pipe to adapt to the distance requirements of different welding processes such as argon arc welding and electric arc welding. At the same time, the through holes of the mounting plate 13 and the turntable 16 allow the pipe body to pass through, ensuring that the pipe does not need to be moved frequently during the welding process, further improving the continuity and uniformity of welding.

[0023] The first motor 10 drives the first drive shaft 11 to rotate, which in turn drives the rotating shaft 3 to rotate synchronously with the heat exchanger pipe conveying roller 4 via the bevel gear 12, thus realizing the automatic conveying of the heat exchanger pipe body 5. Before welding, the pipe is conveyed to the docking position, and after welding, the finished pipe is conveyed to the next process without manual handling. The mounting plate 13 is set in the middle of multiple conveying rollers, so that the pipe is always supported by the conveying rollers during the welding process, avoiding deformation at the docking point due to the pipe sagging under its own weight, ensuring a stable and continuous welding process, and reducing downtime for adjustment.

[0024] The battery on the fixed plate 19 provides independent power support for the welding torch body 21 and the third electric telescopic rod 20, avoiding the interference of external power lines affecting the rotation of the welding torch, and adapting to temporary welding scenarios without external power supply; the L-shaped structure of the sliding frame 7 takes into account both lateral movement and longitudinal clamping functions, with a compact spatial layout that does not occupy too much welding operation space; the various electric components and transmission structure work smoothly together, and parameters can be quickly adjusted according to pipe specifications to adapt to the welding of heat exchanger pipes of different diameters and lengths, improving the versatility of the equipment.

Claims

1. A welding auxiliary fixture for heat exchanger pipes, characterized in that, The system includes a support frame with two mounting seats fixedly installed on its top. Multiple rotating shafts are rotatably mounted on the inner side of each mounting seat, and heat exchanger pipe conveying rollers are fixedly mounted on the outer side of each rotating shaft. Two heat exchanger pipe bodies are placed on the heat exchanger pipe conveying rollers. A first electric telescopic rod is fixedly mounted on one side of each mounting seat, and a sliding frame is fixedly mounted on the output end of the first electric telescopic rod. The sliding frame is L-shaped, and a second electric telescopic rod is fixedly mounted on its top. A pipe guide clamping plate is fixedly mounted on the output end of the second electric telescopic rod.

2. The heat exchanger pipe welding auxiliary fixture according to claim 1, characterized in that, The pipe guide clamping plate is V-shaped and fits snugly against the heat exchanger pipe body.

3. The heat exchanger pipe welding auxiliary fixture according to claim 1, characterized in that, A first motor is fixedly mounted on one side of the mounting base, and a first drive shaft is fixedly mounted on the output end of the first motor. Bevel gears are fixedly mounted on the outer sides of both the first drive shaft and the rotating shaft, and adjacent bevel gears mesh with each other.

4. The auxiliary fixture for welding heat exchanger pipes according to claim 1, characterized in that, A mounting plate is fixedly installed on the top of the support frame, a second motor is fixedly installed on one side of the mounting plate, a second drive shaft is fixedly installed on the output end of the second motor, and a turntable is rotatably installed on the left side of the mounting plate.

5. The heat exchanger pipe welding auxiliary fixture according to claim 4, characterized in that, A transmission gear is fixedly installed on the outer side of the second drive shaft, and a toothed groove is formed around the outer side of the turntable, with the transmission gear meshing with the toothed groove.

6. The heat exchanger pipe welding auxiliary fixture according to claim 4, characterized in that, A fixing plate is fixedly installed on one side of the turntable, and a third electric telescopic rod is fixedly installed on one side of the fixing plate. The output end of the third electric telescopic rod is fixedly installed with the welding gun body. A storage battery is fixedly installed on the fixing plate, and the welding gun body and the third electric telescopic rod are electrically connected to the storage battery.

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