Auxiliary welding machine for pipeline maintenance

Abstract

The invention discloses an auxiliary welding machine for pipeline maintenance, and belongs to the technical field of welding equipment.The auxiliary welding machine for pipeline maintenance comprises a supporting mechanism and two clamping mechanisms, the clamping mechanisms can clamp pipe fittings to be welded, the tops of the clamping mechanisms are fixedly connected through a connecting plate, and the connecting plate is fixedly connected with the supporting mechanism; the two clamping mechanisms are slidably connected to the supporting mechanism, the supporting mechanism can drive the clamping mechanisms to vertically ascend and descend and horizontally slide, the clamping mechanisms are slidably connected with a driving mechanism, and a welding mechanism is arranged on one side of the driving mechanism. The clamping mechanism ensures that the to-be-welded pipe fitting is aligned with the damaged position of the pipeline, the driving mechanism can drive the welding mechanism to conduct welding, welding of the two ends of the to-be-welded pipe fitting can be conducted synchronously, operation is easy, operation can be conveniently conducted by one person, and the maintenance welding efficiency is effectively improved.

Description

Technical Field

[0001] This invention belongs to the field of welding equipment technology, and specifically relates to an auxiliary welding machine for pipeline repair. Background Technology

[0002] Pipelines are widely used in various industries to transport various gases or liquids for modern industrial production. However, after prolonged use, pipelines may develop localized cracks, corrosion, or other damage. In such cases, rapid repair is necessary to prevent further accidents. A common technical solution for pipeline repair is to cut off the damaged section entirely and then weld a replacement pipe of equal length onto the original pipeline, which yields good repair results.

[0003] However, the above solutions require multiple operators, especially since the replacement pipe needs to be precisely delivered to its original position before welding and repair. Traditional equipment requires multiple operators to ensure accurate delivery of the replacement pipe, and then additional operators are needed for welding. This process is complex and inefficient. Therefore, a device that can be operated by a single person and is compatible with multiple functions is needed. Summary of the Invention

[0004] The technical problem to be solved by the present invention is to overcome the shortcomings of the prior art and provide an auxiliary welding machine for pipeline maintenance. In the present invention, the driving mechanism moves in a ring along the clamping mechanism to drive the vehicle body component to move in a ring on the pipeline, that is, to drive the welding component to move in a ring along the welding point between the pipe to be welded and the pipeline to complete the welding. Moreover, the two ends of the pipe to be welded are welded simultaneously. The operation is simple and can be easily operated by a single person, effectively improving the efficiency of maintenance welding.

[0005] The technical solution adopted to solve the above technical problems is: an auxiliary welding machine for pipeline maintenance, including a support mechanism and a clamping mechanism. The clamping mechanism consists of two sets, which can clamp the pipe fittings to be welded. The tops of the two sets of clamping mechanisms are fixedly connected by a connecting plate. The two sets of clamping mechanisms are slidably connected to the support mechanism. The support mechanism can drive the clamping mechanism to move vertically and horizontally. A drive mechanism is slidably connected to the clamping mechanism, and a vehicle body component is provided on one side of the drive mechanism. The drive mechanism can move circumferentially along the clamping mechanism, and the circumferential movement of the drive mechanism can drive the vehicle body assembly to move circumferentially along the pipe to be welded. The welding assembly is inserted into the vehicle body assembly.

[0006] The above technical solution uses two sets of clamping mechanisms. One set clamps the damaged part of the pipeline, while the other set clamps the pipe to be welded. A drive mechanism is symmetrically installed on the clamping mechanism holding the pipe to be welded. After cutting both ends of the damaged pipeline, the support mechanism horizontally pushes the clamping mechanism to push out the damaged part, allowing the pipe to be welded to precisely enter the welding position on the pipeline. The drive mechanism is then connected to the vehicle body assembly. At this point, the welding assembly is perfectly aligned with the welding point. The drive mechanism moves in a circle along the clamping mechanism, causing the vehicle body assembly to move in a circle along the pipeline, thus moving the welding assembly in a circle along the welding point between the pipe to be welded and the pipeline. Welding is completed in one revolution along the welding point, with simultaneous welding at both ends of the pipe. The operation is simple and can be easily performed by a single person, effectively improving maintenance and welding efficiency.

[0007] Furthermore, the support mechanism includes a vertical hydraulic rod, a horizontal rail, and a horizontal hydraulic rod. The horizontal rail is fixedly connected to the top of the vertical hydraulic rod, and the horizontal hydraulic rod is fixedly connected to the rear side of the horizontal rail. A sliding plate is fixedly connected to the connecting plate on the top of the clamping mechanism. The sliding plate is slidably connected to the horizontal rail. One end of the horizontal hydraulic rod is fixedly connected to the sliding plate, and the horizontal hydraulic rod can drive the sliding plate to slide horizontally on the horizontal rail.

[0008] Through the above technical solution, since the horizontal track is fixedly connected to the top of the vertical hydraulic rod, and the horizontal hydraulic rod is fixedly connected to the rear side of the horizontal track, a sliding plate is fixedly connected to the connecting plate on the top of the clamping mechanism. The sliding plate is slidably connected to the horizontal track, and one end of the horizontal hydraulic rod is fixedly connected to the sliding plate. The horizontal hydraulic rod can drive the sliding plate to slide horizontally on the horizontal track, so that the vertical hydraulic rod can drive the horizontal track to rise and fall vertically. In other words, the horizontal hydraulic rod can drive the clamping mechanism to slide horizontally, and the vertical hydraulic rod can drive the clamping mechanism to rise and fall vertically. This achieves precise positioning of the clamping mechanism in three-dimensional space, ensuring that the pipe fitting to be welded is aligned with the damaged part of the pipeline.

[0009] Furthermore, the clamping mechanism is composed of two clamping rings fixedly connected together. The clamping ring is formed by splicing an upper half ring and a lower half ring. The clamping ring can clamp both ends of the pipe to be welded. A toothed ring is fixedly provided on the clamping ring.

[0010] With the above technical solution, since the clamping mechanism is composed of two clamping rings fixedly connected, and the clamping ring is composed of an upper half ring and a lower half ring spliced ​​together, the clamping ring can clamp both ends of the pipe to be welded, so that the upper half ring and the lower half ring can be separated, and the pipe to be welded can be placed between the upper half ring and the lower half ring. Then, the upper half ring and the lower half ring are fixed to form a clamping ring, and the clamping mechanism completes the clamping of the pipe to be welded.

[0011] Furthermore, the driving mechanism includes a movable frame, a driven gear, a sliding seat, a limiting cylinder, a first connecting rod, a second connecting rod, a drive motor, and a first connecting sleeve. The driven gear is rotatably connected to the top of the movable frame. There are two sets of drive motors, which are symmetrically and fixedly connected to the bottom of the movable frame. The limiting cylinder is fixedly connected to the movable frame and is sleeved on the driven gear shaft. The sliding seat is slidably connected to the limiting cylinder. The first connecting sleeve is hinged to the top of the sliding seat. One end of the first connecting rod is snapped onto the first connecting sleeve. There are two sets of second connecting rods, which are symmetrically arranged on the movable frame. One end of the second connecting rod is fixedly connected to the movable frame. A drive wheel is fixedly connected to the drive motor shaft. The drive wheel can fit against the pipe to be welded. A traveling wheel is rotatably connected to the bottom of the vehicle body assembly. Fixed connecting sleeves are symmetrically and fixedly connected to the vehicle body assembly. The second connecting rod can snap into the fixed connecting sleeve.

[0012] Through the above technical solution, the driven gear is rotatably connected to the top of the movable frame; there are two sets of drive motors, symmetrically fixedly connected to the bottom of the movable frame; a limiting cylinder is fixedly connected to the movable frame and sleeved on the driven gear shaft; a sliding seat is slidably connected to the limiting cylinder; a first connecting sleeve is hinged to the top of the sliding seat; one end of a first connecting rod is snapped onto the first connecting sleeve; there are two sets of second connecting rods, symmetrically arranged on the movable frame; one end of the second connecting rod is fixedly connected to the movable frame; a drive wheel is fixedly connected to the drive motor shaft, and the drive wheel can fit against the pipe to be welded; a traveling wheel is rotatably connected to the bottom of the vehicle body assembly; the vehicle... The body assembly is symmetrically and fixedly connected with fixed connecting sleeves. The second connecting rod can be engaged with the fixed connecting sleeves, so that the driven gear and the drive wheel can engage the drive mechanism on the clamping ring. The drive mechanism can move along the clamping ring. The drive motor drives the drive wheel to rotate, which in turn drives the moving frame to move along the clamping ring, that is, drives the drive mechanism to move along the pipe to be welded. The second connecting rod can be engaged with the fixed connecting sleeve, that is, the drive mechanism can be connected to the body assembly. This allows the drive mechanism to move along the pipe to be welded, which in turn drives the body assembly to move along the pipe to be welded, thereby driving the welding assembly to move along the pipe to be welded, and then welding the pipe to be welded.

[0013] Furthermore, the driven gear meshes with the gear ring, the driven gear shaft is provided with a closed arc groove, the top of the limiting cylinder is provided with a limiting groove, the sliding seat is slidably connected to the limiting groove, and the bottom of the sliding seat is provided with a retaining bead, which is slidably connected to the closed arc groove.

[0014] With the above technical solution, since the driven gear meshes with the gear ring, a closed arc groove is provided on the driven gear shaft, a limit groove is provided on the top of the limiting cylinder, the sliding seat is slidably connected to the limit groove, and a retaining ball is provided at the bottom of the sliding seat. The retaining ball is slidably connected to the closed arc groove, so that when the drive mechanism moves along the clamping ring, the gear ring can drive the driven gear to rotate. The rotation of the driven gear forces the retaining ball to slide in the closed arc groove, cooperating with the limit groove, so as to realize the periodic horizontal back and forth sliding of the sliding seat in the limit groove.

[0015] Furthermore, the welding assembly includes a welding frame, a welding torch, and a second connecting sleeve. The welding torch is hinged inside the welding frame, and the second connecting sleeve is hinged to the top of the welding torch. A connecting rail is fixedly connected to the side of the vehicle body assembly near the drive mechanism, and a connecting block is fixedly connected to the side of the welding frame near the vehicle body assembly. The connecting block is slidably connected to the connecting rail.

[0016] With the above technical solution, the welding torch is hinged inside the welding frame, the second connecting sleeve is hinged to the top of the welding torch, a connecting rail is fixedly connected to the side of the vehicle body assembly near the drive mechanism, and a connecting block is fixedly connected to the side of the welding frame near the vehicle body assembly. The connecting block is slidably connected to the connecting rail, so that the welding frame can be detachably installed on the vehicle body assembly. That is, not only welding components can be installed on the vehicle body assembly, but also related equipment such as cutting and grinding can be installed, thereby adapting to various processes in pipeline maintenance and improving operational flexibility. The welding torch is hinged inside the welding frame, which allows the welding torch to swing during welding, improving welding quality.

[0017] Furthermore, the end of the second connecting rod away from the drive mechanism is engaged with a fixed connecting sleeve on the vehicle body assembly, and the end of the first connecting rod away from the drive mechanism is engaged with the second connecting sleeve.

[0018] Through the above technical solution, since the end of the second connecting rod away from the drive mechanism is engaged with the fixed connecting sleeve on the vehicle body component, and the end of the first connecting rod away from the drive mechanism is engaged with the second connecting sleeve, the vehicle body component is fixedly connected to the moving frame through the second connecting rod, and the second connecting sleeve is connected to the first connecting sleeve through the first connecting rod, that is, the welding gun is connected to the sliding seat. This enables the drive mechanism to drive the vehicle body component to move along the pipe to be welded, and during the movement, the sliding seat slides horizontally back and forth periodically along the limiting groove, thereby driving the welding gun to swing within the welding frame, realizing swing welding and improving the welding quality.

[0019] Furthermore, the vehicle body assembly includes a frame, a horizontal inclined block, and a vertical inclined block. The traveling wheels are symmetrically rotatably connected to the bottom of the frame. The fixed connecting sleeve is fixedly installed on the frame. A horizontal channel is provided on the upper part of the frame, and a longitudinal channel is provided in the middle of the frame. The horizontal inclined block is horizontally slidably connected to the horizontal channel, and the vertical inclined block is vertically slidably connected to the longitudinal channel. The horizontal channel and the longitudinal channel are connected, and the inclined surface of the horizontal inclined block and the inclined surface of the vertical inclined block can fit together.

[0020] With the above technical solution, since the traveling wheels are symmetrically rotated and connected to the bottom of the frame, the fixed connecting sleeve is fixedly installed on the frame, a horizontal channel is provided on the upper part of the frame, and a longitudinal channel is provided in the middle of the frame. The horizontal inclined block is horizontally slidably connected to the horizontal channel, and the vertical inclined block is vertically slidably connected to the longitudinal channel. The inclined surfaces of the horizontal and vertical inclined blocks can fit together, allowing the frame to move along the pipe to be welded. The horizontal sliding of the horizontal inclined block in the horizontal channel, through the contact of the inclined surfaces, can force the vertical inclined block to slide vertically in the longitudinal channel.

[0021] Furthermore, a base plate is fixedly connected to the bottom of the frame, a return spring is fixedly connected to the top of the base plate, a vibration rod is fixedly connected to the bottom of the vertical inclined block, the return spring is sleeved on the vibration rod, the top of the return spring is fixedly connected to the bottom of the vertical inclined block, the vibration rod passes through the base plate, the vibration rod is slidably connected to the base plate, and a third connecting sleeve is hinged to the end of the horizontal inclined block near the drive mechanism.

[0022] With the above technical solution, a base plate is fixedly connected to the bottom of the frame, a return spring is fixedly connected to the top of the base plate, a vibration rod is fixedly connected to the bottom of the vertical inclined block, the return spring is sleeved on the vibration rod, the top of the return spring is fixedly connected to the bottom of the vertical inclined block, the vibration rod passes through the base plate, and the vibration rod is slidably connected to the base plate. A third connecting sleeve is hinged to the end of the horizontal inclined block near the drive mechanism, so that after the horizontal inclined block slides towards the vertical inclined block, the horizontal inclined block squeezes the vertical inclined block and descends vertically. After the horizontal inclined block retracts, the vertical inclined block can be reset by the return spring. This allows the periodic horizontal forward and backward movement of the horizontal inclined block to drive the periodic vertical rise and fall of the vertical inclined block, which in turn drives the periodic vertical rise and fall of the vibration rod.

[0023] Furthermore, the middle of the second connecting rod is engaged with the fixed connecting sleeve on the frame, and the end of the first connecting rod away from the drive mechanism is engaged with the third connecting sleeve.

[0024] Through the above technical solution, since the middle of the second connecting rod is engaged with the fixed connecting sleeve on the frame, and the end of the first connecting rod away from the drive mechanism is engaged with the third connecting sleeve, the frame and the moving frame are fixedly connected through the second connecting rod. The moving frame can drive the body components to move along the pipe to be welded. During the movement, the sliding seat slides horizontally back and forth periodically along the limiting groove. At this time, the welding components are removed from the frame, and the frame position is further closer to the moving frame. At this time, the vibrating rod is directly facing the weld. The third connecting sleeve is connected to the first connecting sleeve through the first connecting rod, that is, the sliding seat is connected to the horizontal inclined block, so that the sliding seat can drive the horizontal inclined block to slide horizontally back and forth periodically in the horizontal channel, realizing the periodic vertical lifting and lowering of the vibrating rod, thereby knocking the weld after welding, thereby eliminating welding residual stress, removing impurities such as slag generated during welding, and improving the weld quality.

[0025] The beneficial effects of this invention are as follows: (1) In this invention, one set of clamping mechanisms can clamp the damaged part of the pipeline, and another set of clamping mechanisms can clamp the pipe to be welded. The clamping mechanism that clamps the pipe to be welded is symmetrically equipped with a drive mechanism. Then, the two ends of the damaged part of the pipeline are cut. The support mechanism can push the clamping mechanism horizontally to push out the damaged part of the pipeline, so that the pipe to be welded can accurately enter the position to be welded in the pipeline. Then, the drive mechanism is connected to the vehicle body component. At this time, the welding component is just aligned with the position to be welded. The drive mechanism can move in a circle along the clamping mechanism to drive the vehicle body component to move in a circle on the pipeline, that is, to drive the welding component to move in a circle along the welding point between the pipe to be welded and the pipeline. The welding component can complete the welding by moving one circle along the welding point between the pipe to be welded and the pipeline. The two ends of the pipe to be welded are welded simultaneously. The operation is simple and can be easily operated by one person, which effectively improves the efficiency of maintenance and welding. (2) In this invention, the vehicle body assembly is fixedly connected to the moving frame through the second connecting rod, and the second connecting sleeve is connected to the first connecting sleeve through the first connecting rod, that is, the welding gun is connected to the sliding seat. At this time, the welding gun is aligned with the weld seam, so that the driving mechanism can drive the vehicle body assembly to move along the pipe to be welded. During the movement, the sliding seat slides horizontally back and forth periodically along the limiting groove, thereby driving the welding gun to swing in the welding frame to achieve swing welding and improve the welding quality. Attached Figure Description

[0026] Figure 1 This is a schematic diagram of the structure of an auxiliary welding machine for pipeline maintenance according to the present invention; Figure 2 This is a schematic diagram of the structure of the support mechanism and clamping mechanism of the auxiliary welding machine for pipeline maintenance according to the present invention; Figure 3 This is an exploded structural diagram of the cooperation between the support mechanism and the clamping mechanism of an auxiliary welding machine for pipeline maintenance according to the present invention; Figure 4This is a schematic diagram of the structure of the clamping mechanism, driving mechanism, welding components and vehicle body components of an auxiliary welding machine for pipeline maintenance according to the present invention. Figure 5 This invention relates to an auxiliary welding machine for pipeline repair. Figure 4 Enlarged view of a portion of point A in the middle; Figure 6 This is a schematic diagram of the clamping mechanism of an auxiliary welding machine for pipeline maintenance according to the present invention; Figure 7 This is a schematic diagram of the drive mechanism of an auxiliary welding machine for pipeline maintenance according to the present invention; Figure 8 This is an exploded structural diagram of the drive mechanism of an auxiliary welding machine for pipeline maintenance according to the present invention; Figure 9 This is a first-view structural diagram of the welding components and vehicle body components of an auxiliary welding machine for pipeline maintenance according to the present invention. Figure 10 This is a second-view structural schematic diagram of the welding components and vehicle body components of an auxiliary welding machine for pipeline maintenance according to the present invention. Figure 11 This is an exploded structural diagram of the welding components and vehicle body components of an auxiliary welding machine for pipeline maintenance according to the present invention. Figure 12 This is a schematic diagram of the structure of the drive mechanism and vehicle body components of an auxiliary welding machine for pipeline maintenance according to the present invention; Figure 13 This is an exploded structural diagram of the vehicle body assembly of an auxiliary welding machine for pipeline maintenance according to the present invention.

[0027] Reference numerals: 1. Support mechanism; 2. Clamping mechanism; 3. Drive mechanism; 4. Welding assembly; 5. Car body assembly; 6. Pipe to be welded; 11. Vertical hydraulic rod; 12. Horizontal rail; 13. Horizontal hydraulic rod; 21. Upper half ring; 22. Lower half ring; 23. Sliding plate; 24. Gear ring; 31. Moving frame; 32. Driven gear; 33. Sliding seat; 34. Limiting cylinder; 35. First connecting rod; 36. Second connecting rod; 37. Drive motor; 38. First connecting rod 321. Sleeve; 341. Closed arc groove; 371. Limiting groove; 41. Drive wheel; 42. Welding frame; 43. Welding torch; 44. Second connecting sleeve; 411. Connecting block; 51. Frame; 52. Horizontal inclined block; 53. Vertical inclined block; 511. Connecting rail; 512. Horizontal channel; 513. Longitudinal channel; 514. Base plate; 515. Fixed connecting sleeve; 516. Traveling wheel; 517. Return spring; 521. Third connecting sleeve; 531. Vibration rod. Detailed Implementation

[0028] To make the objectives, technical solutions, and advantages of this invention clearer, the invention will be further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative and not intended to limit the invention.

[0029] like Figure 1 - Figure 3 As shown, an auxiliary welding machine for pipeline repair includes a support mechanism 1 and a clamping mechanism 2. The clamping mechanism 2 consists of two sets. The clamping mechanism 2 can clamp the pipe fitting 6 to be welded. The tops of the two sets of clamping mechanisms 2 are fixedly connected by a connecting plate. The two sets of clamping mechanisms 2 are slidably connected to the support mechanism 1. The support mechanism 1 can drive the clamping mechanism 2 to move vertically and slide horizontally. A drive mechanism 3 is slidably connected to the clamping mechanism 2. A vehicle body component 5 is provided on one side of the drive mechanism 3. The drive mechanism 3 can move in a ring along the clamping mechanism 2. The ring movement of the drive mechanism 3 can drive the vehicle body assembly 5 to move in a ring along the pipe to be welded 6. The welding assembly 4 is inserted into the vehicle body assembly 5.

[0030] In this embodiment, there are two sets of clamping mechanisms 2. One set of clamping mechanisms 2 can clamp the damaged part of the pipeline, while the other set of clamping mechanisms 2 can clamp the pipe fitting 6 to be welded. The driving mechanism 3 is symmetrically installed on the clamping mechanism 2 that clamps the pipe fitting 6 to be welded. Then, the two ends of the damaged part of the pipeline are cut. The support mechanism 1 pushes the clamping mechanism 2 horizontally to push out the damaged part of the pipeline, allowing the pipe fitting 6 to be welded to accurately enter the welding position of the pipeline. Then, the driving mechanism 3 is connected to the vehicle body component 5. At this time, the welding component 4 is exactly aligned with the welding position. The driving mechanism 3 moves in a circle along the clamping mechanism 2, which drives the vehicle body component 5 to move in a circle along the pipeline. That is, it drives the welding component 4 to move in a circle along the welding position between the pipe fitting 6 and the pipeline. The welding component 4 completes the welding by moving one revolution along the welding position between the pipe fitting 6 and the pipeline. The two ends of the pipe fitting 6 to be welded are welded simultaneously. The operation is simple and can be easily operated by a single person, effectively improving the efficiency of maintenance and welding.

[0031] like Figure 1 - Figure 6 As shown, the support mechanism 1 includes a vertical hydraulic rod 11, a horizontal rail 12, and a horizontal hydraulic rod 13. The horizontal rail 12 is fixedly connected to the top of the vertical hydraulic rod 11, and the horizontal hydraulic rod 13 is fixedly connected to the rear side of the horizontal rail 12. A sliding plate 23 is fixedly connected to the connecting plate on the top of the clamping mechanism 2. The sliding plate 23 is slidably connected to the horizontal rail 12. One end of the horizontal hydraulic rod 13 is fixedly connected to the sliding plate 23. The horizontal hydraulic rod 13 can drive the sliding plate 23 to slide horizontally on the horizontal rail 12. The clamping mechanism 2 is composed of two clamping rings fixedly connected together. The clamping ring is formed by splicing an upper half ring 21 and a lower half ring 22. The clamping ring can clamp both ends of the pipe fitting 6 to be welded. A toothed ring 24 is fixedly provided on the clamping ring.

[0032] In this embodiment, the upper half ring 21 and the lower half ring 22 are disassembled, and the pipe fitting 6 to be welded can be placed between the upper half ring 21 and the lower half ring 22. Then, the upper half ring 21 and the lower half ring 22 are fixed to form a clamping ring, and the clamping mechanism 2 completes the clamping of the pipe fitting 6 to be welded. The clamping ring can also be used in the same way to clamp both ends of the damaged pipeline. The vertical hydraulic rod 11 can lift and lower the horizontal rail 12 vertically, while the horizontal hydraulic rod 13 can drive the sliding plate 23 to slide horizontally on the horizontal rail 12. That is, the horizontal hydraulic rod 13 can drive the clamping mechanism 2 to slide horizontally, and the vertical hydraulic rod 11 can drive the clamping mechanism 2 to lift and lower vertically, thereby achieving precise positioning of the clamping mechanism 2 in three-dimensional space and ensuring that the pipe fitting 6 to be welded is aligned with the damaged part of the pipeline.

[0033] like Figure 2 - Figure 11 As shown, the drive mechanism 3 includes a movable frame 31, a driven gear 32, a sliding seat 33, a limiting sleeve 34, a first connecting rod 35, a second connecting rod 36, a drive motor 37, and a first connecting sleeve 38. The driven gear 32 is rotatably connected to the top of the movable frame 31. There are two sets of drive motors 37, which are symmetrically fixedly connected to the bottom of the movable frame 31. The limiting sleeve 34 is fixedly connected to the movable frame 31 and is sleeved on the rotating shaft of the driven gear 32. The sliding seat 33 is slidably connected to the limiting sleeve 34. The first connecting sleeve 38 is connected to the sliding seat. The top of the 33 is hinged. One end of the first connecting rod 35 is snapped onto the first connecting sleeve 38. There are two sets of second connecting rods 36. The second connecting rods 36 are symmetrically arranged on the movable frame 31. One end of the second connecting rod 36 is fixedly connected to the movable frame 31. The drive wheel 371 is fixedly connected to the shaft of the drive motor 37. The drive wheel 371 can fit with the pipe 6 to be welded. The bottom of the vehicle body assembly 5 is rotatably connected to the traveling wheel 516. The fixed connecting sleeve 515 is symmetrically fixedly connected to the vehicle body assembly 5. The second connecting rod 36 can snap onto the fixed connecting sleeve 515. Driven gear 32 meshes with gear ring 24. A closed arc groove 321 is provided on the shaft of driven gear 32. A limit groove 341 is provided on the top of limit cylinder 34. Sliding seat 33 is slidably connected to limit groove 341. A retaining bead is provided at the bottom of sliding seat 33. The retaining bead is slidably connected to closed arc groove 321. Welding assembly 4 includes welding frame 41, welding torch 42, and second connecting sleeve 43. Welding torch 42 is hinged inside welding frame 41, and second connecting sleeve 43 is hinged to the top of welding torch 42. Connecting rail 511 is fixedly connected to the side of vehicle body assembly 5 near drive mechanism 3. Connecting block 411 is fixedly connected to the side of welding frame 41 near vehicle body assembly 5. Connecting block 411 is slidably connected to connecting rail 511. The end of the second connecting rod 36 away from the drive mechanism 3 is engaged with the fixed connecting sleeve 515 on the vehicle body assembly 5, and the end of the first connecting rod 35 away from the drive mechanism 3 is engaged with the second connecting sleeve 43.

[0034] In this embodiment, the driven gear 32 and the drive wheel 371 cooperate to lock the drive mechanism 3 onto the clamping ring, and the drive mechanism 3 can move along the clamping ring. The drive motor 37 drives the drive wheel 371 to rotate, which in turn drives the moving frame 31 to move along the clamping ring, that is, drives the drive mechanism 3 to move along the pipe to be welded 6. The second connecting rod 36 can be engaged with the fixed connecting sleeve 515, that is, the drive mechanism 3 can be connected to the vehicle body assembly 5, so that the movement of the drive mechanism 3 along the pipe to be welded 6 can drive the vehicle body assembly 5 to move along the pipe to be welded 6. When the drive mechanism 3 moves along the clamping ring, the gear ring 24 can drive the driven gear 32 to rotate. The rotation of the driven gear 32 forces the ball to slide in the closed arc groove 321, which cooperates with the limiting groove 341 to realize the sliding seat 33 to slide horizontally back and forth periodically in the limiting groove 341. The vehicle body assembly 5 is fixedly connected to the moving frame 31 via the second connecting rod 36, and the second connecting sleeve 43 is connected to the first connecting sleeve 38 via the first connecting rod 35, that is, the welding torch 42 is connected to the sliding seat 33. At this time, the welding torch 42 is aligned with the weld seam, so that the drive mechanism 3 can drive the vehicle body assembly 5 to move along the pipe 6 to be welded. During the movement, the sliding seat 33 slides horizontally back and forth periodically along the limiting groove 341, which in turn drives the welding torch 42 to swing within the welding frame 41 to achieve swing welding and improve the welding quality. The welding frame 41 is detachably mounted on the vehicle body assembly 5. That is, the vehicle body assembly 5 can not only be equipped with the welding assembly 4, but also with cutting and grinding equipment. When the clamping ring holds the two ends of the damaged pipeline, the cutting equipment is installed on the vehicle body assembly 5. The drive mechanism 3 can drive the vehicle body assembly 5 to move along the pipeline to cut the two ends of the damaged pipeline. After the cutting is completed, the grinding equipment can be replaced on the vehicle body assembly 5. The drive mechanism 3 can drive the vehicle body assembly 5 to move along the pipeline to grind the cut weld, which facilitates subsequent welding and thus adapts to various processes in pipeline maintenance.

[0035] like Figure 7 - Figure 13 As shown, the vehicle body assembly 5 includes a frame 51, a horizontal inclined block 52, and a vertical inclined block 53. The driving wheels 516 are symmetrically rotatably connected to the bottom of the frame 51. The fixed connecting sleeve 515 is fixedly installed on the frame 51. A horizontal channel 512 is provided on the upper part of the frame 51, and a longitudinal channel 513 is provided in the middle of the frame 51. The horizontal inclined block 52 is horizontally slidably connected to the horizontal channel 512, and the vertical inclined block 53 is vertically slidably connected to the longitudinal channel 513. The horizontal channel 512 and the longitudinal channel 513 are connected, and the inclined surface of the horizontal inclined block 52 can fit against the inclined surface of the vertical inclined block 53. A base plate 514 is fixedly connected to the bottom of the frame 51, a return spring 517 is fixedly connected to the top of the base plate 514, a vibration rod 531 is fixedly connected to the bottom of the vertical inclined block 53, the return spring 517 is sleeved on the vibration rod 531, the top of the return spring 517 is fixedly connected to the bottom of the vertical inclined block 53, the vibration rod 531 passes through the base plate 514, the vibration rod 531 is slidably connected to the base plate 514, and a third connecting sleeve 521 is hinged to one end of the horizontal inclined block 52 near the drive mechanism 3. The second connecting rod 36 is engaged with the fixed connecting sleeve 515 on the frame 51 in the middle, and the end of the first connecting rod 35 away from the drive mechanism 3 is engaged with the third connecting sleeve 521.

[0036] In this embodiment, the frame 51 and the movable frame 31 are fixedly connected by the second connecting rod 36. The movable frame 31 can drive the body assembly 5 to move along the pipe 6 to be welded. During the movement, the sliding seat 33 slides horizontally back and forth periodically along the limiting groove 341. At this time, the welding assembly 4 has been removed from the frame 51, and the position of the frame 51 is further closer to the movable frame 31. At this time, the vibration rod 531 is directly opposite the weld. The third connecting sleeve 521 is connected to the first connecting sleeve 38 through the first connecting rod 35, that is, the sliding seat 33 is connected to the horizontal inclined block 52, so that the sliding seat 33 can drive the horizontal inclined block. The horizontal inclined block 52 slides horizontally back and forth periodically within the horizontal channel 512. After sliding towards the vertical inclined block 53, the horizontal inclined block 52 presses the vertical inclined block 53 to descend vertically. After the horizontal inclined block 52 retracts, the vertical inclined block 53 can be reset by the return spring 517. That is, the periodic horizontal back and forth movement of the horizontal inclined block 52 can drive the vertical inclined block 53 to periodically move up and down vertically, thereby realizing the periodic vertical movement of the vibration rod 531, which can knock on the weld after welding, thereby eliminating residual welding stress, removing impurities such as slag produced during welding, and improving the quality of the weld.

[0037] Working principle: During operation, one set of clamping mechanisms 2 clamps the damaged part of the pipeline, while another set of clamping mechanisms 2 clamps the pipe fitting 6 to be welded. The cutting equipment is installed on the vehicle body component 5 connected to the clamping mechanism 2 that clamps the damaged part of the pipeline. The drive mechanism 3 can drive the vehicle body component 5 to move along the pipeline to achieve cutting at both ends of the damaged part of the pipeline. The support mechanism 1 can push the clamping mechanism 2 horizontally to push out the clamping mechanism 2 at the damaged part of the pipeline, so that the clamping mechanism 2 holding the pipe fitting 6 to be welded can accurately enter the position of the pipeline to be welded. At this time, the grinding equipment is installed on the vehicle body component 5 connected to the clamping mechanism 2 holding the pipe fitting 6 to be welded. The drive mechanism 3 can drive the vehicle body component 5 to move along the pipe fitting 6 to be welded, so as to grind the weld seam to be welded to create a bevel, which is convenient for subsequent welding. Then the grinding equipment on the vehicle body assembly 5 is replaced with the welding assembly 4. When the drive mechanism 3 moves along the clamping ring, the gear ring 24 can drive the driven gear 32 to rotate. The rotation of the driven gear 32 forces the ball to slide in the closed arc groove 321 and cooperate with the limiting groove 341 to realize the sliding seat 33 to slide horizontally back and forth periodically in the limiting groove 341. The vehicle body assembly 5 is fixedly connected to the moving frame 31 via the second connecting rod 36, and the second connecting sleeve 43 is connected to the first connecting sleeve 38 via the first connecting rod 35, that is, the welding torch 42 is connected to the sliding seat 33. At this time, the welding torch 42 is aligned with the weld seam, so that the drive mechanism 3 can drive the vehicle body assembly 5 to move along the pipe 6 to be welded. During the movement, the sliding seat 33 slides horizontally back and forth periodically along the limiting groove 341, which in turn drives the welding torch 42 to swing within the welding frame 41 to achieve swing welding and improve the welding quality. After welding is completed, the welding assembly 4 is removed, and the middle of the second connecting rod 36 is snapped into the fixed connecting sleeve 515 on the frame 51. The end of the first connecting rod 35 away from the drive mechanism 3 is snapped into the third connecting sleeve 521. At this time, the vibrating rod 531 is facing the weld. During the movement, the sliding seat 33 slides back and forth horizontally along the limiting groove 341 periodically. The third connecting sleeve 521 is connected to the first connecting sleeve 38 through the first connecting rod 35, that is, the sliding seat 33 is connected to the horizontal inclined block 52, so that the sliding seat 33 can drive the horizontal inclined block 52 to slide back and forth horizontally in the horizontal channel 512 periodically. After the horizontal inclined block 52 slides towards the vertical inclined block 53, the horizontal inclined block 52 squeezes the vertical inclined block 53 to descend vertically. After the horizontal inclined block 52 retracts, the vertical inclined block 53 can be reset by the return spring 517. That is, the periodic horizontal reciprocating movement of the horizontal inclined block 52 can drive the vertical inclined block 53 to move up and down vertically periodically, so as to realize the periodic vertical movement of the vibrating rod 531, thereby knocking the weld after welding, thereby eliminating welding residual stress, removing impurities such as slag produced by welding, and improving the quality of the weld. This invention achieves seamless connection of processes such as cutting, grinding, and welding through modular replacement design, and the switching of various tools is convenient. A single person can complete the entire pipeline repair operation, effectively improving work efficiency.

[0038] The above description is merely a preferred embodiment of the present invention and is not intended to limit the scope of protection of the present invention.

Claims

1. An auxiliary welding machine for pipeline repair, comprising a support mechanism (1) and a clamping mechanism (2), characterized in that, The clamping mechanism (2) consists of two sets. The clamping mechanism (2) can clamp the pipe to be welded (6). The tops of the two sets of clamping mechanisms (2) are fixedly connected by a connecting plate. The two sets of clamping mechanisms (2) are slidably connected to the support mechanism (1). The support mechanism (1) can drive the clamping mechanism (2) to move vertically and horizontally. A drive mechanism (3) is slidably connected to the clamping mechanism (2). A vehicle body assembly (5) is provided on one side of the drive mechanism (3). The drive mechanism (3) can move in a ring along the clamping mechanism (2). The ring movement of the drive mechanism (3) can drive the vehicle body assembly (5) to move in a ring along the pipe to be welded (6). A welding assembly (4) is inserted into the vehicle body assembly (5).

2. The auxiliary welding machine for pipeline repair according to claim 1, characterized in that, The support mechanism (1) includes a vertical hydraulic rod (11), a horizontal rail (12) and a horizontal hydraulic rod (13). The horizontal rail (12) is fixedly connected to the top of the vertical hydraulic rod (11), and the horizontal hydraulic rod (13) is fixedly connected to the rear side of the horizontal rail (12). A sliding plate (23) is fixedly connected to the connecting plate on the top of the clamping mechanism (2). The sliding plate (23) is slidably connected to the horizontal rail (12). One end of the horizontal hydraulic rod (13) is fixedly connected to the sliding plate (23). The horizontal hydraulic rod (13) can drive the sliding plate (23) to slide horizontally on the horizontal rail (12).

3. The auxiliary welding machine for pipeline repair according to claim 2, characterized in that, The clamping mechanism (2) is composed of two clamping rings fixedly connected together. The clamping ring is composed of an upper half ring (21) and a lower half ring (22) spliced ​​together. The clamping ring can clamp both ends of the pipe fitting (6) to be welded. A toothed ring (24) is fixedly provided on the clamping ring.

4. The auxiliary welding machine for pipeline repair according to claim 3, characterized in that, The driving mechanism (3) includes a movable frame (31), a driven gear (32), a sliding seat (33), a limiting cylinder (34), a first connecting rod (35), a second connecting rod (36), a drive motor (37), and a first connecting sleeve (38). The driven gear (32) is rotatably connected to the top of the movable frame (31). There are two sets of drive motors (37), which are symmetrically fixedly connected to the bottom of the movable frame (31). The limiting cylinder (34) is fixedly connected to the movable frame (31) and is sleeved on the shaft of the driven gear (32). The sliding seat (33) is slidably connected to the limiting cylinder (34). The first connecting sleeve (38) is connected to the sliding seat. (33) The top is hinged. One end of the first connecting rod (35) is snapped onto the first connecting sleeve (38). There are two sets of the second connecting rods (36). The second connecting rods (36) are symmetrically arranged on the moving frame (31). One end of the second connecting rod (36) is fixedly connected to the moving frame (31). The drive wheel (371) is fixedly connected to the shaft of the drive motor (37). The drive wheel (371) can fit with the pipe to be welded (6). The bottom of the vehicle body assembly (5) is rotatably connected to the walking wheel (516). The fixed connecting sleeve (515) is symmetrically fixedly connected to the vehicle body assembly (5). The second connecting rod (36) can snap onto the fixed connecting sleeve (515).

5. The auxiliary welding machine for pipeline repair according to claim 4, characterized in that, The driven gear (32) meshes with the gear ring (24). A closed arc groove (321) is provided on the shaft of the driven gear (32). A limit groove (341) is provided on the top of the limiting cylinder (34). The sliding seat (33) is slidably connected to the limit groove (341). A retaining bead is provided at the bottom of the sliding seat (33). The retaining bead is slidably connected to the closed arc groove (321).

6. The auxiliary welding machine for pipeline repair according to claim 5, characterized in that, The welding assembly (4) includes a welding frame (41), a welding torch (42), and a second connecting sleeve (43). The welding torch (42) is hinged inside the welding frame (41), and the second connecting sleeve (43) is hinged to the top of the welding torch (42). A connecting rail (511) is fixedly connected to the side of the vehicle body assembly (5) near the drive mechanism (3). A connecting block (411) is fixedly connected to the side of the welding frame (41) near the vehicle body assembly (5). The connecting block (411) is slidably connected to the connecting rail (511).

7. The auxiliary welding machine for pipeline repair according to claim 6, characterized in that, The end of the second connecting rod (36) away from the drive mechanism (3) is engaged with the fixed connecting sleeve (515) on the vehicle body assembly (5), and the end of the first connecting rod (35) away from the drive mechanism (3) is engaged with the second connecting sleeve (43).

8. The auxiliary welding machine for pipeline repair according to claim 5, characterized in that, The vehicle body assembly (5) includes a frame (51), a horizontal inclined block (52), and a vertical inclined block (53). The driving wheels (516) are symmetrically rotated and connected to the bottom of the frame (51). The fixed connecting sleeve (515) is fixedly installed on the frame (51). A horizontal channel (512) is provided on the upper part of the frame (51), and a longitudinal channel (513) is provided in the middle of the frame (51). The horizontal inclined block (52) is horizontally slidably connected to the horizontal channel (512), and the vertical inclined block (53) is vertically slidably connected to the longitudinal channel (513). The horizontal channel (512) is connected to the longitudinal channel (513), and the inclined surface of the horizontal inclined block (52) can fit against the inclined surface of the vertical inclined block (53).

9. The auxiliary welding machine for pipeline repair according to claim 8, characterized in that, The bottom of the frame (51) is fixedly connected to a base plate (514), the top of the base plate (514) is fixedly connected to a return spring (517), the bottom of the vertical inclined block (53) is fixedly connected to a vibration rod (531), the return spring (517) is sleeved on the vibration rod (531), the top of the return spring (517) is fixedly connected to the bottom of the vertical inclined block (53), the vibration rod (531) passes through the base plate (514), the vibration rod (531) is slidably connected to the base plate (514), and the horizontal inclined block (52) is hinged to a third connecting sleeve (521) at one end near the drive mechanism (3).

10. An auxiliary welding machine for pipeline repair according to claim 9, characterized in that, The second connecting rod (36) is engaged with the fixed connecting sleeve (515) on the frame (51) in the middle, and the end of the first connecting rod (35) away from the drive mechanism (3) is engaged with the third connecting sleeve (521).

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