Welding equipment for pipeline maintenance and repair

Abstract

The utility model provides welding equipment for pipeline maintenance and repair, which comprises a welding pipeline, an annular track, a driving mechanism, an adjusting mechanism and a welding gun, the annular track is provided with an annular joint, the annular track is an annular track matched with the annular joint, the annular track is arranged on the periphery of the welding pipeline, and the welding gun is arranged on the annular track. The driving mechanism is installed on the annular rail in a sliding mode, the adjusting mechanism is detachably installed on the annular rail, and the welding gun is installed on the adjusting mechanism. The welding device for pipeline maintenance and first-aid repair is only composed of the adjusting mechanism and the welding gun, a driving component on a large welding machine in the prior art can be omitted, miniaturization and light weight of the welding machine can be achieved, and the welding device is convenient to use under the conditions that a welded pipeline needs to be repaired and the maintenance and first-aid repair environment is inconvenient in traffic. Maintenance and first-aid repair personnel can quickly carry and convey the welding machine only composed of the welding gun and the adjusting mechanism, the quick connecting part of the adjusting mechanism can be quickly in butt joint with the annular rail, and quick response of maintenance and first-aid repair can be achieved.

Description

Technical Field

[0001] The utility model relates to the technical field of pipeline emergency repair, in particular to welding equipment for pipeline emergency repair. Background Art

[0002] Among the methods of transporting oil and natural gas, using oil and natural gas pipelines for transportation has the advantages of saving energy, large transportation volume, fast transportation speed, and low transportation cost. It is a commonly used means of transporting oil and natural gas.

[0003] When laying oil and gas pipelines, welding robots can be used to weld pipelines, which can reduce the workload of construction workers to a certain extent. The welding robots used in pipeline construction (laying) are usually large and bulky, and have a long operation cycle. In pipeline maintenance and repair scenarios, when a pipeline fails, it is required to respond quickly and reach the maintenance and repair site quickly.

[0004] In the field of pipeline maintenance and repair, whether it is for the repair of docking ports, B-type sleeves or plugging tees, the existing welding robots are heavy, which increases the difficulty of transporting them to the maintenance and repair sites (especially places that are inconvenient for vehicles to travel or cannot be reached by vehicles), hindering the rapid response of maintenance and repair. Utility Model Content

[0005] The technical problem to be solved by the utility model is to provide a welding device for pipeline maintenance and repair in view of the deficiencies of the prior art.

[0006] The utility model provides a technical solution to the above-mentioned technical problem as follows: a welding device for pipeline maintenance and emergency repair, comprising: a welding pipeline, an annular track, a driving mechanism, an adjusting mechanism and a welding gun, the annular track being provided with an annular joint, the annular track being an annular joint adapted to the annular joint, the annular track being installed on the outer periphery of the welding pipeline, the driving mechanism being slidably installed on the annular track, the adjusting mechanism being detachably installed on the annular track, and the welding gun being installed on the adjusting mechanism.

[0007] The beneficial effects of the technical solution of the utility model are: through the sliding connection between the adjustment mechanism and the annular track, the adjustment mechanism can move circumferentially along the welding pipeline and drive the welding gun to move circumferentially together, thereby adjusting the position of the welding gun so that the welding gun can weld the annular seam. The adjustment mechanism can adjust the position of the welding end of the welding gun, which is conducive to the welding gun to better weld the annular seam. The adjustment mechanism can adjust the welding end of the welding gun to cooperate with the annular seam for welding, thereby realizing highly automated welding of the annular seam. The pipeline maintenance and emergency repair welding device is only composed of an adjustment mechanism and a welding gun, which can omit the driving components on large and medium-sized welding machines in the prior art, and can realize the miniaturization and lightweight of the welding machine. When the welding pipeline needs to be repaired and the maintenance and emergency repair environment is inconvenient, the maintenance and emergency repair personnel can quickly transport the welding machine consisting only of a welding gun and an adjustment mechanism, and the quick-connect part of the adjustment mechanism can be quickly docked with the annular track, which can realize a rapid response to maintenance and emergency repair.

[0008] Furthermore, a quick-connect portion for connecting with the annular track is provided on the adjusting mechanism, and the adjusting mechanism is detachably mounted on the annular track via the quick-connect portion.

[0009] The beneficial effects of adopting the above-mentioned further technical solution are: the adjustment mechanism is provided with a quick-connect portion for quick connection with the annular track, and the adjustment mechanism can slide along the circumference of the annular track; the welding gun is installed on the adjustment mechanism and the welding end is used to be arranged toward the annular joint, and the adjustment mechanism can adjust the position of the welding end of the welding gun in space through its own movement.

[0010] Furthermore, the quick-connect portion is a column structure or a connecting platform, and the annular track is provided with a clamp adapted to the column structure or a connecting piece adapted to the connecting platform.

[0011] The beneficial effect of adopting the above-mentioned further technical solution is that the quick-connect part can be a column structure or a connecting platform on the adjusting mechanism. In the case of a column structure, a clamp that is clamped to the column structure can be provided in the annular track. In the case of a connecting platform, the annular track can be quickly connected to the connecting platform through multiple connecting parts such as screws and bolts.

[0012] Furthermore, the adjustment mechanism includes: a welding box, an output guide rod, a first adjustment component for driving the output guide rod to telescopically move in a horizontal direction, a second adjustment component for driving the output guide rod to vertically move along a strip hole, and a third adjustment component for adjusting the welding angle of the welding gun. A strip hole is opened on one side of the welding box in the height direction, the output guide rod movably passes through the strip hole and the outer end is connected to the welding gun, the first adjustment component and the second adjustment component are both connected to the inner end of the output guide rod, the first adjustment component and the second adjustment component are both arranged in the welding box, and the third adjustment component is installed outside the welding box and connected to the welding gun.

[0013] The beneficial effect of adopting the above further technical solution is: the annular track that drives the welding gun to make annular motion is separated from other motion axis systems of the adjustment mechanism, and the adjustment mechanism for adjusting the position of the welding gun is arranged on the annular track, which can be easily disassembled and assembled, and meets the requirements of lightweight, and can improve the stability of welding operation. The first adjustment component is connected to the inner end of the output guide rod and is used to drive the output guide rod to telescopically move in the horizontal direction. The second adjustment component is used to drive the output guide rod to move along the strip hole. The third adjustment component is used to adjust the welding angle of the welding gun. The first adjustment component and the second adjustment component are arranged in the welding box, and the welding box plays a role in protecting the first adjustment component and the second adjustment component, and preventing the first adjustment component and the second adjustment component from being damaged by external impact. The third adjustment component is installed outside the welding box and connected to the welding gun, which is convenient for adjusting the angle and direction of the welding end of the welding gun. By coupling the three groups of adjustment components of the adjustment mechanism inside and outside the welding box, the volume is minimized and the overall weight is reduced while ensuring that the motion stroke remains unchanged.

[0014] Furthermore, the first adjustment component includes: a first rotary drive member, a first rotary screw and a first slider, the first rotary screw is arranged in a horizontal direction and is rotationally driven connected to the first rotary drive member, the first slider is threadedly matched with the first rotary screw, and the inner end of the output guide rod is connected to the first slider.

[0015] The beneficial effect of adopting the above further technical solution is that the first adjustment component is connected to the inner end of the output guide rod and is used to drive the output guide rod to telescopically move in the horizontal direction.

[0016] Furthermore, the second adjustment component includes: a second rotary drive member, a second rotary screw and a second slider, the second rotary screw is arranged along the height direction and is rotationally driven connected to the second rotary drive member, the second slider is threadedly matched with the second rotary screw, and the inner end of the output guide rod is connected to the second slider.

[0017] The beneficial effect of adopting the above further technical solution is that the second adjustment component is used to drive the output guide rod to move along the strip-shaped hole.

[0018] Furthermore, the third adjustment component includes: an adjustment bracket, a worm gear reducer for driving the locking portion to swing circumferentially, and a fourth rotation drive member for driving the worm gear reducer to rotate, one end of the adjustment bracket is connected to the outer end portion of the output guide rod, and the other end of the adjustment bracket is provided with a locking portion for clamping the welding gun along the circumferential direction, the worm gear reducer is arranged on the adjustment bracket and connected to the locking portion, and the output shaft of the fourth rotation drive member is drivingly connected to the worm gear reducer; the adjustment bracket is sleeved on the outer periphery of the output guide rod, and the adjustment bracket and the output guide rod are detachably connected by an adjusting screw.

[0019] The beneficial effect of adopting the above further technical solution is that the third adjustment component is used to adjust the welding angle of the welding gun. One end of the adjustment bracket is connected to the outer end of the output guide rod, and the other end is formed with a locking portion for clamping the welding gun in the circumferential direction. The worm gear reducer is arranged on the adjustment bracket and connected to the locking portion. The worm gear reducer is used to drive the locking portion to swing circumferentially to adjust the inclination angle of the welding gun, so that the welding gun has a larger range of motion, can better approach the annular seam, and improve the welding effect of the welding gun. The adjustment bracket is sleeved on the outer periphery of the output guide rod, and the adjustment bracket and the output guide rod are detachably connected by a manual adjustment screw. The inclination angle of the adjustment bracket can be adjusted by the manual adjustment screw, so that the welder can better approach the annular seam and improve the welding effect.

[0020] Furthermore, the inner wall of the annular track is arranged with multiple groups of elastic support components for abutting against the outer wall of the welding pipe at intervals along the circumferential direction; a traveling track is provided on the annular track; the driving mechanism includes: a mounting bracket, a traveling gear, a third rotating driving component and a guide wheel, the traveling gear and the guide wheel are both rotatably mounted on the mounting bracket, the traveling gear is meshed with the traveling track, the third rotating driving component is coaxially driven and connected with the traveling gear, and the guide wheel is slidingly matched with the traveling track guide.

[0021] The beneficial effect of adopting the above further technical solution is that: the inner circumferential wall of the annular track is evenly spaced along the circumferential direction to arrange multiple groups of elastic support components for supporting the annular track and maintaining a constant distance between the annular track and the welding pipe. When the annular track is sleeved on the outer circumference of the welding pipe, the elastic support components abut against the outer circumferential wall of the welding pipe to support the annular track. Driven by the third rotating drive member, the traveling gear meshes and drives the mounting bracket to move along the circumferential direction of the traveling track, and the guide wheel also slides along the traveling track to play an auxiliary guiding role.

[0022] Furthermore, the elastic support assembly includes: an abutment block for abutting against the outer peripheral wall of the welding pipe, a connecting block and an elastic member, the abutment block is provided with a through hole, the connecting block is installed on the inner wall of the annular track, the connecting block is provided with a pin hole, and the elastic member is connected between the connecting block and the abutment block.

[0023] The beneficial effect of adopting the above further technical solution is that the elastic member is connected between the connecting block and the abutting block, so that the distance between the connecting block and the abutting block can be adjusted. When the annular track is sleeved on the outer circumference of the welding pipe and the welding pipe is welded, the abutting block abuts against the outer circumferential wall of the welding pipe. Since the distance between the abutting block and the connecting block is adjustable, the annular track can be adapted to the welding of welding pipes of different diameters; in addition, the elastic member also plays a certain buffering role, preventing the welding pipe from directly applying force to the annular track and damaging the pipe fittings. Multiple connecting blocks are connected between the first ring and the second ring to enhance the structural strength of the annular track.

[0024] Furthermore, the annular track includes: a first circular ring and a second circular ring arranged in parallel and spaced apart along the axial direction, the first circular ring includes two first semi-circular rings that are spliced ​​and clamped together, the second circular ring includes two second semi-circular rings that are spliced ​​and clamped together, the outer diameter of the first circular ring is greater than the outer diameter of the second circular ring, the first circular ring and the second circular ring are rigidly connected, and the walking track is installed on the outer peripheral wall of the first circular ring.

[0025] The beneficial effect of adopting the above further technical solution is that when the welding box moves on the walking track of the first ring, since the outer diameter of the first ring is greater than the outer diameter of the second ring, interference with the second ring can be avoided.

[0026] Advantages of additional aspects of the present invention will be partially given in the following description, and partially become apparent from the following description, or be understood through practice of the present invention. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] Figure 1 This is one of the structural schematic diagrams of the pipeline maintenance and emergency repair welding equipment provided in an embodiment of the utility model.

[0028] Figure 2 The second structural schematic diagram of the welding equipment for pipeline maintenance and emergency repair provided by the embodiment of the utility model.

[0029] Figure 3 The third structural schematic diagram of the welding equipment for pipeline maintenance and emergency repair provided by the embodiment of the utility model.

[0030] Figure 4 The fourth structural schematic diagram of the welding equipment for pipeline maintenance and repair provided by the embodiment of the utility model.

[0031] Figure 5 The fifth structural schematic diagram of the welding equipment for pipeline maintenance and emergency repair provided by the embodiment of the utility model.

[0032] Figure 6 The sixth structural schematic diagram of the welding equipment for pipeline maintenance and repair provided in the embodiment of the utility model.

[0033] Explanation of the accompanying drawings: 2. welding pipe; 3. adjustment mechanism; 4. annular track; 5. welding gun; 6. welding box; 7. output guide rod; 8. first rotating drive member; 10. first rotating screw; 11. second rotating drive member; 12. second rotating screw; 13. third adjusting assembly; 131. adjusting bracket; 132. locking part; 133. worm gear reducer; 134. fourth rotating drive member; 16. elastic support assembly; 17. abutment block; 18. connecting block; 19. elastic member; 20. first circular ring; 201. walking track; 21. second circular ring; 30. driving mechanism; 31. walking gear; 32. guide wheel; 33. third rotating drive member; 38. quick connector. DETAILED DESCRIPTION

[0034] The principles and features of the present invention are described below in conjunction with the accompanying drawings. The embodiments given are only used to explain the present invention and are not used to limit the scope of the present invention.

[0035] like Figures 1 to 6 As shown, an embodiment of the utility model provides a welding device for pipeline maintenance and emergency repair, including: a welding pipeline 2, an annular track 4, a driving mechanism, an adjusting mechanism 3 and a welding gun 5, the annular track 4 is provided with an annular seam, the annular track 4 is an annular track adapted to the annular seam, the annular track 4 is installed on the outer periphery of the welding pipeline 2, the driving mechanism is slidably installed on the annular track 4, the adjusting mechanism 3 is detachably installed on the annular track 4, and the welding gun 5 is installed on the adjusting mechanism 3.

[0036] The beneficial effects of the technical solution of the utility model are: through the sliding connection between the adjustment mechanism and the annular track, the adjustment mechanism can move circumferentially along the welding pipeline and drive the welding gun to move circumferentially together, thereby adjusting the position of the welding gun so that the welding gun can weld the annular seam. The adjustment mechanism can adjust the position of the welding end of the welding gun, which is conducive to the welding gun to better weld the annular seam. The adjustment mechanism can adjust the welding end of the welding gun to cooperate with the annular seam for welding, thereby realizing highly automated welding of the annular seam. The pipeline maintenance and emergency repair welding device is only composed of an adjustment mechanism and a welding gun, which can omit the driving components on large and medium-sized welding machines in the prior art, and can realize the miniaturization and lightweight of the welding machine. When the welding pipeline needs to be repaired and the maintenance and emergency repair environment is inconvenient, the maintenance and emergency repair personnel can quickly transport the welding machine consisting only of a welding gun and an adjustment mechanism, and the quick-connect part of the adjustment mechanism can be quickly docked with the annular track, which can realize a rapid response to maintenance and emergency repair.

[0037] The embodiment of the utility model provides a welding machine, a quick-connect device and a pipeline welding device (a welding device for pipeline emergency repair), which can realize the requirement of rapid response in emergency repair.

[0038] The welding gun in the embodiment of the utility model is connected by sliding with the annular track through the adjusting mechanism. When the adjusting mechanism can move circumferentially along the welding pipeline, it can drive the welding gun to move circumferentially together, thereby adjusting the position of the welding gun so that the welding gun can weld the annular seam. The adjusting mechanism can adjust the position of the welding end of the welding gun, which is conducive to the welding gun to better weld the annular seam. The adjusting mechanism in the welding machine of the embodiment of the utility model can adjust the welding end of the welding gun to cooperate with the annular seam for welding, so as to achieve highly automated welding of the annular seam. The welding machine of the utility model is only composed of the adjusting mechanism and the welding gun, which can omit the driving components on the large welding machine in the prior art, and can realize the miniaturization and lightweight of the welding machine. When the welding pipeline needs to be repaired and the repair environment is inconvenient, the repair personnel can quickly transport and transport the welding machine consisting only of the welding gun and the adjusting mechanism, and the quick connection part of the adjusting mechanism can be quickly docked with the annular track, so as to achieve a rapid response to the repair.

[0039] like Figures 1 to 6 As shown, further, the adjusting mechanism 3 is provided with a quick-connection portion for connecting with the annular track 4, and the adjusting mechanism 3 is detachably mounted on the annular track 4 through the quick-connection portion.

[0040] The beneficial effects of adopting the above-mentioned further technical solution are: the adjustment mechanism is provided with a quick-connect portion for quick connection with the annular track, and the adjustment mechanism can slide along the circumference of the annular track; the welding gun is installed on the adjustment mechanism and the welding end is used to be arranged toward the annular joint, and the adjustment mechanism can adjust the position of the welding end of the welding gun in space through its own movement.

[0041] Among them, the quick connection part is a quick connector.

[0042] like Figures 1 to 6 As shown, further, the quick-connect part is a column structure or a connecting platform, and the annular track 4 is provided with a clamp adapted to the column structure or a connecting piece adapted to the connecting platform.

[0043] The beneficial effect of adopting the above-mentioned further technical solution is that the quick-connect part can be a column structure or a connecting platform on the adjusting mechanism. In the case of a column structure, a clamp that is clamped to the column structure can be provided in the annular track. In the case of a connecting platform, the annular track can be quickly connected to the connecting platform through multiple connecting parts such as screws and bolts.

[0044] like Figures 1 to 6As shown, further, the adjusting mechanism 3 includes: a welding box 6, an output guide rod 7, a first adjusting component for driving the output guide rod 7 to telescopically move in the horizontal direction, a second adjusting component for driving the output guide rod 7 to vertically move along the strip hole, and a third adjusting component for adjusting the welding angle of the welding gun 5. A strip hole is opened on one side of the welding box 6 along the height direction, the output guide rod 7 movably passes through the strip hole and the outer end is connected to the welding gun 5, the first adjusting component and the second adjusting component are both connected to the inner end of the output guide rod 7, the first adjusting component and the second adjusting component are both arranged in the welding box 6, and the third adjusting component is installed outside the welding box 6 and connected to the welding gun 5.

[0045] The beneficial effect of adopting the above further technical solution is: the annular track that drives the welding gun to make annular motion is separated from other motion axis systems of the adjustment mechanism, and the adjustment mechanism for adjusting the position of the welding gun is arranged on the annular track, which can be easily disassembled and assembled, and meets the requirements of lightweight, and can improve the stability of welding operation. The first adjustment component is connected to the inner end of the output guide rod and is used to drive the output guide rod to telescopically move in the horizontal direction. The second adjustment component is used to drive the output guide rod to move along the strip hole. The third adjustment component is used to adjust the welding angle of the welding gun. The first adjustment component and the second adjustment component are arranged in the welding box, and the welding box plays a role in protecting the first adjustment component and the second adjustment component, and preventing the first adjustment component and the second adjustment component from being damaged by external impact. The third adjustment component is installed outside the welding box and connected to the welding gun, which is convenient for adjusting the angle and direction of the welding end of the welding gun. By coupling the three groups of adjustment components of the adjustment mechanism inside and outside the welding box, the volume is minimized and the overall weight is reduced while ensuring that the motion stroke remains unchanged.

[0046] like Figures 1 to 6 As shown, further, the first adjusting component includes: a first rotating driving member 8, a first rotating screw 10 and a first slider, the first rotating screw 10 is arranged in a horizontal direction and is rotationally driven connected to the first rotating driving member 8, the first slider is threadedly matched with the first rotating screw 10, and the inner end of the output guide rod 7 is connected to the first slider.

[0047] The beneficial effect of adopting the above further technical solution is that the first adjustment component is connected to the inner end of the output guide rod and is used to drive the output guide rod to telescopically move in the horizontal direction.

[0048] like Figures 1 to 6As shown, further, the second adjustment component includes: a second rotating drive member 11, a second rotating screw 12 and a second slider, the second rotating screw 12 is arranged along the height direction and is rotationally driven connected to the second rotating drive member 11, the second slider is threadedly matched with the second rotating screw 12, and the inner end of the output guide rod 7 is connected to the second slider.

[0049] The beneficial effect of adopting the above further technical solution is that the second adjustment component is used to drive the output guide rod to move along the strip-shaped hole.

[0050] like Figures 1 to 6 As shown, further, the third adjustment component includes: an adjustment bracket 131, a worm gear reducer 133 for driving the locking portion 132 to swing circumferentially, and a fourth rotation driving member 134 for driving the worm gear reducer 133 to rotate, one end of the adjustment bracket 131 is connected to the outer end of the output guide rod 7, and the other end of the adjustment bracket 131 is provided with a locking portion 132 for clamping the welding gun 5 along the circumferential direction, the worm gear reducer 133 is arranged on the adjustment bracket 131 and connected to the locking portion 132, and the output shaft of the fourth rotation driving member 134 is drivingly connected to the worm gear reducer 133; the adjustment bracket 131 is sleeved on the outer periphery of the output guide rod 7, and the adjustment bracket 131 and the output guide rod 7 are detachably connected by an adjusting screw.

[0051] The beneficial effect of adopting the above further technical solution is that the third adjustment component is used to adjust the welding angle of the welding gun. One end of the adjustment bracket is connected to the outer end of the output guide rod, and the other end is formed with a locking portion for clamping the welding gun in the circumferential direction. The worm gear reducer is arranged on the adjustment bracket and connected to the locking portion. The worm gear reducer is used to drive the locking portion to swing circumferentially to adjust the inclination angle of the welding gun, so that the welding gun has a larger range of motion, can better approach the annular seam, and improve the welding effect of the welding gun. The adjustment bracket is sleeved on the outer periphery of the output guide rod, and the adjustment bracket and the output guide rod are detachably connected by a manual adjustment screw. The inclination angle of the adjustment bracket can be adjusted by the manual adjustment screw, so that the welder can better approach the annular seam and improve the welding effect.

[0052] like Figures 1 to 6As shown, further, the inner wall of the annular track 4 is arranged with multiple groups of elastic support components 16 for abutting against the outer wall of the welding pipe 2 at intervals along the circumferential direction; a walking track 201 is provided on the annular track 4; the driving mechanism includes: a mounting bracket, a walking gear 31, a third rotating driving member 33 and a guide wheel 32, the walking gear 31 and the guide wheel 32 are both rotatably mounted on the mounting bracket, the walking gear 31 is meshed with the walking track 201, the third rotating driving member 33 is coaxially driven and connected with the walking gear 31, and the guide wheel 32 is slidingly matched with the walking track 201.

[0053] The beneficial effect of adopting the above further technical solution is that: the inner circumferential wall of the annular track is evenly spaced along the circumferential direction to arrange multiple groups of elastic support components for supporting the annular track and maintaining a constant distance between the annular track and the welding pipe. When the annular track is sleeved on the outer circumference of the welding pipe, the elastic support components abut against the outer circumferential wall of the welding pipe to support the annular track. Driven by the third rotating drive member, the traveling gear meshes and drives the mounting bracket to move along the circumferential direction of the traveling track, and the guide wheel also slides along the traveling track to play an auxiliary guiding role.

[0054] like Figures 1 to 6 As shown, further, the elastic support assembly 16 includes: an abutment block 17 for abutting against the outer wall of the welding pipe 2, a connecting block 18 and an elastic member 19, the abutment block 17 is provided with a through hole, the connecting block 18 is installed on the inner wall of the annular track 4, the connecting block 18 is provided with a pin hole, and the elastic member 19 is connected between the connecting block 18 and the abutment block 17.

[0055] The beneficial effect of adopting the above further technical solution is that the elastic member is connected between the connecting block and the abutting block, so that the distance between the connecting block and the abutting block can be adjusted. When the annular track is sleeved on the outer circumference of the welding pipe and the welding pipe is welded, the abutting block abuts against the outer circumferential wall of the welding pipe. Since the distance between the abutting block and the connecting block is adjustable, the annular track can be adapted to the welding of welding pipes of different diameters; in addition, the elastic member also plays a certain buffering role, preventing the welding pipe from directly applying force to the annular track and damaging the pipe fittings. Multiple connecting blocks are connected between the first ring and the second ring to enhance the structural strength of the annular track.

[0056] like Figures 1 to 6As shown, further, the annular track 4 includes: a first circular ring 20 and a second circular ring 21 arranged in parallel and spaced relation along the axial direction, the first circular ring 20 includes two first semi-circular rings spliced ​​and clamped together, the second circular ring 21 includes two second semi-circular rings spliced ​​and clamped together, the outer diameter of the first circular ring 20 is greater than the outer diameter of the second circular ring 21, the first circular ring 20 and the second circular ring 21 are rigidly connected, and the walking track 4 is installed on the outer peripheral wall of the first circular ring 20.

[0057] The beneficial effect of adopting the above further technical solution is that when the welding box moves on the walking track of the first ring, since the outer diameter of the first ring is greater than the outer diameter of the second ring, interference with the second ring can be avoided.

[0058] like Figure 1 As shown, in an embodiment of the utility model, a welding machine is proposed for the maintenance of annular joints, the welding machine includes an adjusting mechanism 3 and a welding gun 5, the adjusting mechanism 3 is provided with a quick connection portion (quick connector 38) for quick connection with the annular track 4, and the adjusting mechanism 3 can slide along the circumference of the annular track 4; the welding gun 5 is installed on the adjusting mechanism 3 and the welding end is used to be arranged toward the annular joint, and the adjusting mechanism 3 can adjust the welding end position of the welding gun 5 in space through its own movement.

[0059] The quick-connect part in the embodiment of the utility model can be a column structure or a connection platform on the adjustment mechanism 3. In the case of a column structure, a clamp that is clamped with the column structure can be provided in the annular track 4. In the case of a connection platform, the annular track 4 can be quickly connected to the connection platform through multiple connectors such as screws and bolts. It should be noted that the welding machine in the utility model will be described by taking the annular seam in the butt joint welding as an example, but the welding machine is not limited to the welding of the butt joint between two welding pipes, and can also be applied to structures such as plugging tees that require maintenance and repair of welding pipes.

[0060] The utility model separates the annular track 4 for driving the welding gun 5 to make annular motion from other motion axis systems of the adjusting mechanism 3, and arranges the adjusting mechanism 3 for adjusting the position of the welding gun 5 on the annular track 4, which can be easily disassembled and assembled, meets the requirements of lightweight, and can improve the stability of welding operation.

[0061] During the welding process, the annular track 4 can be directly set on the outer periphery of the pipe 2 to be welded, and the entire adjustment mechanism 3 and the driving mechanism 30 can move relative to the annular track 4. This structural form of the welding machine can be carried around, and is convenient for use in welding the seams of welding pipes in difficult areas such as hillsides. When the welding pipe 2 needs to be repaired, the welding machine can be quickly transported.

[0062] During the welding process, since the welding gun 5 in the utility model is slidably connected by the adjusting mechanism 3 and the annular track 4, the adjusting mechanism 3 can move circumferentially along the welding pipe 2 and drive the welding gun 5 to move circumferentially together, thereby adjusting the position of the welding gun 5 so that the welding gun 5 can weld the annular seam. The adjusting mechanism 3 can adjust the welding end position of the welding gun 5, which is conducive to the welding gun 5 to better weld the annular seam. The adjusting mechanism 3 in the welding machine of the utility model can adjust the welding end of the welding gun 5 to cooperate with the annular seam for welding, so as to achieve highly automated welding of the annular seam. The welding machine in this embodiment is only composed of the adjusting mechanism 3 and the welding gun 5, which can omit the driving components on the large welding machine in the prior art, and can realize the miniaturization and lightweight of the welding machine. When the welding pipeline needs to be repaired and the repair environment is inconvenient, the repair personnel can quickly transport and transport the welding machine consisting only of the welding gun 5 and the adjusting mechanism 3, and the quick connection part of the adjusting mechanism 3 can be quickly docked with the annular track 4, which can achieve a rapid response to the repair.

[0063] like Figure 2 As shown, in the embodiment of the present application, the adjustment mechanism 3 includes a welding box 6, an output guide rod 7, a first adjustment assembly, a second adjustment assembly, and a third adjustment assembly 13. A strip hole is opened on one side of the welding box 6 along the height direction. The output guide rod 7 movably passes through the strip hole and the outer end is connected to the welding gun 5. The first adjustment assembly is connected to the inner end of the output guide rod 7 and is used to drive the output guide rod 7 to telescopically move in the horizontal direction.

[0064] The second adjustment component is used to drive the output guide rod 7 to move along the strip hole. The third adjustment component 13 is used to adjust the welding angle of the welding gun 5. The first adjustment component and the second adjustment component are arranged in the welding box 6, and the welding box 6 plays a role in protecting the first adjustment component and the second adjustment component to prevent the first adjustment component and the second adjustment component from being damaged by external impact. The third adjustment component 13 is installed outside the welding box 6 and connected to the welding gun 5, so as to adjust the angle and direction of the welding end of the welding gun 5. Figure 3 The left and right direction is the horizontal direction, and the up and down direction is the height direction.

[0065] As can be seen from the above, the present application couples the three groups of adjustment components of the adjustment mechanism 3 on the inside and outside of the welding box 6, thereby minimizing the volume and reducing the overall weight while ensuring that the motion stroke remains unchanged. Among them, the structural parts in the adjustment mechanism 3 of the present application are all made of medium and low density engineering materials such as high-strength aluminum alloy, titanium alloy, and engineering plastics. Under the condition of meeting the reliability and structural rigidity of the adjustment mechanism 3, the overall weight and external dimensions of the adjustment mechanism 3 are strictly controlled.

[0066] like Figure 3As shown, in an embodiment of the utility model, the first adjustment component includes a first rotary drive member 8, a first rotary screw 10 and a first slider. The first rotary screw 10 is arranged in the horizontal direction and is connected to the first rotary drive member 8 for rotational driving. The first slider is threadedly matched with the first rotary screw 10, and the inner end of the output guide rod 7 is connected to the first slider. The second adjustment component includes a second rotary drive member 11, a second rotary screw 12 and a second slider. The second rotary screw 12 is arranged in the height direction and is connected to the second rotary drive member 11 for rotational driving. The second slider is threadedly matched with the second rotary screw 12, and the inner end of the output guide rod 7 is connected to the second slider.

[0067] When the annular seam needs to be welded, the first rotating screw 10 can be driven to rotate axially by the first rotating driving member 8, so that the first slider slides on the first rotating screw 10 in the horizontal direction, and the output guide rod 7 extends outward or retracts from the strip hole in the horizontal direction under the drive of the first slider, so as to adjust the position of the welding gun 5 in the horizontal direction. Then, if the position of the welding gun 5 needs to be adjusted in the height direction, the second rotating screw 12 can be driven to rotate axially by the second rotating driving member 11, so that the second slider slides on the second rotating screw 12 in the height direction, so as to ensure that the output guide rod 7 moves in the strip hole in the height direction under the drive of the second slider, and finally adjust the welding gun 5 to the best position for welding the annular seam. Further, in the process of adjusting the position of the welding gun 5, the first slider can be driven to slide along the first rotating screw 10 first, and the second slider can be driven to slide along the second rotating screw 12 first, or the first slider and the second slider can be driven to slide at the same time to adjust the welding end position of the welding gun 5 until the best welding position is reached. It should be noted that guide rods are also provided on both sides of the first rotating screw 10 and the second rotating screw 12 to assist the first slider and the first rotating screw 10, and the second slider and the second rotating screw 12 to better slide and cooperate. Figure 2 As shown, a guide rod is arranged in parallel on both sides of the first rotating screw rod 10 and the second rotating screw rod 12 , and the first rotating screw rod 10 , the second rotating screw rod 12 and the guide rod are all connected to the welding box 6 .

[0068] like Figure 2 , Figure 3 and Figure 4As shown, in the embodiment of the utility model, the third adjustment assembly 13 includes an adjustment bracket 131, a worm gear reducer 133 and a fourth rotation driving member 134 for driving the worm gear reducer 133 to rotate. One end of the adjustment bracket 131 is connected to the outer end of the output guide rod 7, and the other end is formed with a locking portion 132 for clamping the welding gun 5 in the circumferential direction. The worm gear reducer 133 is arranged on the adjustment bracket 131 and connected to the locking portion 132. The worm gear reducer 133 is used to drive the locking portion 132 to swing circumferentially to adjust the inclination angle of the welding gun 5, so that the welding gun 5 has a larger range of motion, can better approach the annular seam, and improve the welding effect of the welding gun 5. The adjustment bracket 131 includes a first adjustment plate and a second adjustment plate. The first adjustment plate is parallel to the side wall of the welding box 6 and one end is connected to the output guide rod 7. The other end is connected to a second adjustment plate arranged in the height direction and extending in the horizontal direction. The locking portion 132 and the worm gear reducer 133 are respectively located on both sides of the second adjustment plate. The locking part 132 includes a clamp and a locking screw. The clamp passes through the second adjustment plate and is connected to the worm gear reducer 133. The worm gear reducer 133 drives the clamp to swing circumferentially. The locking screw is inserted into the opening on the clamp to adjust the tightness of the clamp holding the welding gun 5, and the position of the clamp holding the welding gun 5 can be controlled by adjusting the locking screw.

[0069] In the embodiment of the utility model, the adjustment bracket 131 is sleeved on the outer periphery of the output guide rod, and the adjustment bracket 131 and the output guide rod 7 are detachably connected by a manual adjustment screw. The inclination angle of the adjustment bracket 131 can be adjusted by the manual adjustment screw, so that the welder 5 can be closer to the annular seam to improve the welding effect.

[0070] In an embodiment of the present utility model, a welding machine quick connection device is provided, and the welding machine quick connection device is used for quick connection of the welding machine as described above. Figure 5 and Figure 6 As shown, in the embodiment of the utility model, the inner wall of the annular track 4 is evenly spaced along the circumferential direction and is provided with a plurality of groups of elastic support components 16, which are used to support the annular track 4 and maintain a constant distance between the annular track 4 and the welding pipe 2. When the annular track 4 is sleeved on the outer periphery of the welding pipe 2, the elastic support components 16 abut against the outer wall of the welding pipe 2, playing the role of supporting the annular track 4. The welding box 6 may be provided with a power supply module and a controller, and the power supply module may be electrically connected to the driving mechanism 30 through a power supply quick connector, so as to realize the power supply from the welding machine to the welding machine quick connector, and the controller is electrically connected to the power supply module, and the controller may send an electrical signal to the driving mechanism 30 in a wireless or wired manner, and the controller may adopt an existing PLC controller.

[0071] like Figure 6As shown, in an embodiment of the utility model, the elastic support assembly 16 includes an abutment block 17, a connection block 18 and an elastic member 19. The abutment block 17 abuts against the welding pipe 2 and has a through hole formed on the surface. The connection block 18 is arranged on the inner side wall of the annular track 4 and has a pin hole formed on the surface. The elastic member 19 is connected between the connection block 18 and the abutment block 17, so that the distance between the connection block 18 and the abutment block 17 can be adjusted. When the annular track 4 is sleeved on the outer periphery of the welding pipe 2 and the welding pipe 2 is welded, the abutment block 17 abuts against the outer peripheral wall of the welding pipe 2. Since the distance between the abutment block 17 and the connection block 18 is adjustable, the annular track 4 can be adapted to the welding of welding pipes 2 of different diameters; in addition, the elastic member 19 also plays a certain buffering role to prevent the welding pipe 2 from directly applying force to the annular track 4 and damaging the pipe fittings.

[0072] Furthermore, if Figure 6 As shown, the connecting block 18 includes a radial portion and an axial portion connected in sequence, and the number of the elastic members 19 and the abutment blocks 17 on the side of the radial portion facing the welding pipe 2 can be two or more to increase the contact area with the welding pipe 2 and improve the buffering force.

[0073] like Figure 5 As shown, in the embodiment of the utility model, the annular track 4 includes a first circular ring 20 and a second circular ring 21 arranged in parallel and spaced apart in the axial direction. The first circular ring 20 includes two first semicircular rings that are spliced ​​and clamped. The second circular ring 21 includes two second semicircular rings that are spliced ​​and clamped. The first semicircular ring and the second semicircular ring have the same structure, and both have a clamping portion protruding outward at one end, and a groove that is plugged into the clamping portion at the other end.

[0074] A plurality of connecting blocks 18 are connected between the first circular ring 20 and the second circular ring 21 to enhance the structural strength of the circular track 4 .

[0075] In an embodiment of the utility model, the outer peripheral wall of the first ring 20 is formed with a walking track 201, the outer periphery of the welding box 6 is provided with a mounting bracket, and the driving mechanism 30 includes a walking gear 31, a third rotating driving member 33 and a guide wheel 32. The walking gear 31 is mounted on the mounting bracket and meshes with the walking track 201. The third rotating driving member 33 is coaxially driven and connected with the walking gear 31. The guide wheel 32 is mounted on the mounting bracket and guides and slides with the walking track 201. Among them, the first rotating driving member 8, the second rotating driving member 11, the third rotating driving member 33 and the fourth rotating driving member 134 are all rotating motors. In addition, when the welding box 6 walks on the walking track 201 of the first ring 20, since the outer diameter of the first ring 20 is greater than the outer diameter of the second ring 21, interference with the second ring 21 can be avoided. It should be noted that the mounting bracket is also provided with a quick connector 38, which is used to conveniently connect the welding box 6 to the mounting bracket, so as to ensure that the welding box 6 and the mounting bracket can be quickly matched and installed during the two-dimensional emergency repair of the welding pipeline, thereby improving the efficiency of the two-dimensional emergency repair of the welding pipeline. When the actual welding pipeline is laid, the circular track 4 can be reserved on the welding pipeline 2 at fixed intervals in advance. During the emergency repair process, only the lightweight adjustment mechanism 3 and the welding gun 5 need to be transported to the emergency repair site, and the quick connector 38 and the circular track 4 can be conveniently assembled for emergency repair.

[0076] Among them, a plurality of rollers are evenly spaced and arranged in the circumferential direction of the travel track 201, and a receiving space is formed between two adjacent rollers. The receiving space is used to accommodate the gear teeth of the travel gear 31, and the width of the receiving space is set in accordance with the gear teeth. Under the drive of the third rotating driving member 33, the travel gear 31 meshes and drives the mounting bracket to move circumferentially along the travel track 201, and the guide wheel 32 also slides and cooperates along the travel track 201 to play an auxiliary guiding role.

[0077] The utility model also provides a pipeline welding device (pipeline maintenance and emergency repair welding device), which includes the welding machine and the pipeline welding device as described above. Since the welding machine and the pipeline welding device adopt all the above embodiments, they also have all the beneficial effects brought by the pipeline welding device, which will not be described in detail here.

[0078] The welding gun in the utility model is slidably connected to the annular track through an adjustment mechanism. When the adjustment mechanism can move circumferentially along the welding pipe, it drives the welding gun to move circumferentially together, thereby adjusting the position of the welding gun so that the welding gun can weld the annular seam. The adjustment mechanism can adjust the position of the welding end of the welding gun, which is conducive to the welding gun to better weld the annular seam. The adjustment mechanism in the welding machine of the utility model can adjust the welding end of the welding gun to cooperate with the annular seam for welding, thereby realizing highly automated welding of the annular seam.

[0079] The welding machine of the utility model is composed of only an adjusting mechanism and a welding gun, and the driving components on large welding machines in the prior art can be omitted, so that the welding machine can be miniaturized and lightweight. When the welding pipeline needs to be repaired and the transportation in the repair environment is inconvenient, the repair personnel can quickly carry and transport the welding machine composed of only a welding gun and an adjusting mechanism, and the quick-connect part of the adjusting mechanism can be quickly connected with the circular track, so as to achieve a rapid response to the repair.

[0080] Finally, it should be noted that the above embodiments are only used to illustrate the technical solution of the utility model, rather than to limit it. Although the utility model has been described in detail with reference to the aforementioned embodiments, ordinary technicians in this field should understand that they can still modify the technical solutions recorded in the aforementioned embodiments, or replace some or all of the technical features therein with equivalents. However, these modifications or replacements do not make the essence of the corresponding technical solution deviate from the scope of the technical solution of the embodiments of the utility model.

Claims

1. A welding device for pipeline maintenance and repair, characterized in that: include: A welding pipe, an annular track, a driving mechanism, an adjusting mechanism and a welding gun, wherein the annular track is provided with an annular seam, the annular track is an annular track adapted to the annular seam, the annular track is installed on the outer circumference of the welding pipe, the driving mechanism is slidably installed on the annular track, the adjusting mechanism is detachably installed on the annular track, and the welding gun is installed on the adjusting mechanism.

2. A pipeline repair welding device according to claim 1, characterized in that: The adjusting mechanism is provided with a quick-connection part for connecting with the annular track, and the adjusting mechanism is detachably mounted on the annular track through the quick-connection part.

3. A pipeline repair welding device according to claim 2, characterized in that: The quick-connect part is a column structure or a connecting platform, and the annular track is provided with a clamp adapted to the column structure or a connecting piece adapted to the connecting platform.

4. The pipeline repair welding equipment according to claim 1, characterized in that: The adjustment mechanism includes: a welding box, an output guide rod, a first adjustment component for driving the output guide rod to telescopically move in a horizontal direction, a second adjustment component for driving the output guide rod to vertically move along a strip hole, and a third adjustment component for adjusting the welding angle of the welding gun. A strip hole is opened on one side of the welding box in the height direction, the output guide rod movably passes through the strip hole and the outer end is connected to the welding gun, the first adjustment component and the second adjustment component are both connected to the inner end of the output guide rod, the first adjustment component and the second adjustment component are both arranged in the welding box, and the third adjustment component is installed outside the welding box and connected to the welding gun.

5. The pipeline repair welding equipment according to claim 4 is characterized in that: The first adjustment component includes: a first rotating drive member, a first rotating screw and a first slider. The first rotating screw is arranged in a horizontal direction and is rotationally driven and connected to the first rotating drive member. The first slider is threadedly matched with the first rotating screw. The inner end of the output guide rod is connected to the first slider.

6. The pipeline repair welding equipment according to claim 4, characterized in that: The second adjustment component includes: a second rotary drive member, a second rotary screw and a second slider. The second rotary screw is arranged along the height direction and is rotationally driven and connected to the second rotary drive member. The second slider is threadedly matched with the second rotary screw. The inner end of the output guide rod is connected to the second slider.

7. The pipeline repair welding equipment according to claim 4 is characterized in that: The third adjustment assembly includes: an adjustment bracket, a worm gear reducer for driving the locking portion to swing circumferentially, and a fourth rotation drive member for driving the worm gear reducer to rotate, one end of the adjustment bracket is connected to the outer end of the output guide rod, and the other end of the adjustment bracket is provided with a locking portion for clamping the welding gun along the circumferential direction, the worm gear reducer is arranged on the adjustment bracket and connected to the locking portion, and the output shaft of the fourth rotation drive member is drivingly connected to the worm gear reducer; the adjustment bracket is sleeved on the outer periphery of the output guide rod, and the adjustment bracket and the output guide rod are detachably connected by an adjustment screw.

8. The pipeline repair welding equipment according to claim 1, characterized in that: The inner wall of the annular track is arranged with multiple groups of elastic support components for abutting against the outer wall of the welding pipe at intervals along the circumferential direction; a walking track is provided on the annular track; the driving mechanism includes: a mounting bracket, a walking gear, a third rotating driving component and a guide wheel, the walking gear and the guide wheel are both rotatably mounted on the mounting bracket, the walking gear is meshed with the walking track, the third rotating driving component is coaxially driven and connected with the walking gear, and the guide wheel is slidingly matched with the walking track guide.

9. A pipeline repair welding device according to claim 8, characterized in that: The elastic support assembly includes: an abutment block for abutting against the outer peripheral wall of the welding pipe, a connecting block and an elastic member, the abutment block is provided with a through hole, the connecting block is installed on the inner wall of the annular track, the connecting block is provided with a pin hole, and the elastic member is connected between the connecting block and the abutment block.

10. The pipeline repair welding equipment according to claim 8, characterized in that: The annular track includes: a first circular ring and a second circular ring arranged in parallel and spaced apart along the axial direction, the first circular ring includes two first semi-circular rings spliced ​​and clamped together, the second circular ring includes two second semi-circular rings spliced ​​and clamped together, the outer diameter of the first circular ring is greater than the outer diameter of the second circular ring, the first circular ring and the second circular ring are rigidly connected, and the walking track is installed on the outer peripheral wall of the first circular ring.

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