Narrow-gap all-position automatic welding machine for thick-wall pipeline

Abstract

The invention belongs to the technical field of pipeline welding, and particularly relates to a narrow-gap all-position automatic welding machine for a thick-wall pipeline. The welding trolley comprises a rail and a welding trolley, the rail is detachably connected and fixed to the outer wall of a pipeline, grooves are formed in the side walls of the two sides of the rail and formed in the length direction of the rail, fixed wheels are fixedly arranged on a welding trolley shell, movable wheels are arranged on the welding trolley shell in a sliding mode, the fixed wheels and the movable wheels are located on the two sides of the rail respectively, and the fixed wheels are located in the grooves. The movable wheels move in the direction close to or away from the track, and opening and closing assemblies are arranged between the movable wheels and the welding tractor shell and used for driving the movable wheels to move, so that the movable wheels are matched with the fixed wheels to clamp the track or loosen clamping of the track. The automatic welding trolley has the remarkable effects that the quick connection between the trolley and the track is effectively improved, and the defects caused by difficulty in clamping and inaccurate positioning during welding when the automatic welding trolley is additionally arranged on the track are overcome.

Description

Technical Field

[0001] The invention belongs to the technical field of pipeline welding, and in particular relates to a full-position automatic welding machine for thick-walled pipelines with narrow gaps. Background Art

[0002] At present, under the general trend of smart pipeline construction, the application fields of pipeline welding machines are becoming more and more extensive. Pipeline welding machines can be used in thermal pipelines, building steel structure cylinders, urban gas pipelines, water pipelines, slurry pipelines, industrial pipelines, etc., which can greatly reduce the labor intensity of welders, improve welding quality, and speed up welding efficiency.

[0003] There are two types of pipe welding machines. One is fixed on the outer wall of the pipe, and the welding gun moves with the weld. The other is fixed, and the pipe rotates relative to the welding gun. The first is to fix the track on the outer wall of the pipe first, and then connect the welding car matched with the track to the track, and the welding car moves on the track to complete the welding of the round pipe.

[0004] In actual operation, the inventor found that the track is matched with the welding car. When the space around the pipe to be welded is limited, a track with a smaller width is needed to save space. Once the track is replaced, the matching welding car needs to be replaced as well, which has the defect of cumbersome operation. Summary of the invention

[0005] The invention aims at the defects of the prior art and provides a thick-walled pipe narrow-gap full-position automatic welding machine.

[0006] The present invention is implemented as follows: a thick-walled pipe narrow gap full-position automatic welding machine includes a track and a welding car, the track is detachably connected and fixed on the outer wall of the pipe, grooves are opened on the side walls on both sides of the track, and the grooves are opened along the length direction of the track. Fixed wheels are fixedly arranged on the outer shell of the welding car, and movable wheels are slidably arranged. The fixed wheels and the movable wheels are respectively located on both sides of the track, the fixed wheels are located in the grooves, and the movable wheels move in the direction of approaching or moving away from the track. An opening and closing component is arranged between the movable wheel and the outer shell of the welding car, and the opening and closing component is used to drive the movable wheel to move, so that the movable wheel cooperates with the fixed wheel to clamp the track or release the clamping of the track.

[0007] A thick-walled pipe narrow gap full-position automatic welding machine as described above, wherein the opening and closing assembly includes a crank, an adjusting shaft, a positioning sleeve and a connecting plate, the connecting plate is fixedly connected to the movable wheel, one end of the positioning sleeve is rotatably connected to the connecting plate, and the other end is threadedly connected to the adjusting shaft; the end of the adjusting shaft away from the positioning sleeve is rotatably connected to one end of the crank; the crank is rotatably connected to the welding vehicle shell; the rotating shafts of the crank and the welding vehicle shell, the rotating shafts between the positioning sleeve and the connecting plate, and the rotating shafts between the positioning sleeve and the connecting plate are all arranged in the same direction, and the arrangement direction is along the diameter direction of the circular pipe.

[0008] In the above-mentioned all-position automatic welding machine for thick-walled pipes with narrow gaps, a torsion spring is sleeved on the rotating shaft between the crank and the welding vehicle shell, and the torsion spring is used to provide a force for the movable wheel to always move toward the direction close to the track.

[0009] As described above, a full-position automatic welding machine for thick-walled pipes with narrow gaps, wherein the welding vehicle is provided with a welding head connecting plate, and the welding head connecting plate is provided with a wire feeding tube clamping assembly and an adjusting mechanism; the wire feeding tube clamping assembly comprises a chuck plate and a clamping plate, the clamping plate is located on one side of the chuck plate, one end of the clamping plate is fixedly connected to the chuck plate, and the other end cooperates with the chuck plate to form an open shape; the adjusting mechanism is used to adjust the angle of the wire feeding tube clamping assembly in the horizontal direction and the height in the vertical direction.

[0010] A thick-walled pipe narrow gap full-position automatic welding machine as described above, wherein a fixed box is fixed on the welding head connecting plate; the adjusting mechanism includes a first adjusting component and a second adjusting component, the first adjusting component includes a first motor, a first worm gear, a first worm and a screw, the first motor is fixedly connected to the welding head connecting plate, one end of the first worm is fixedly connected to the rotating shaft of the first motor, the first worm is meshed with the first worm gear, the first worm gear is sleeved on the outer wall of the screw and is threadedly connected to the screw, the screw is arranged perpendicular to the first worm and passes through the fixed box, the first worm and the first worm gear are both located in the fixed box; the second adjusting component is used to drive the screw to rotate.

[0011] A thick-walled pipe narrow gap full-position automatic welding machine as described above, wherein the second adjustment component includes a second motor, a second worm gear, a second worm and a protrusion, a slot is provided on the screw, the slot is provided along the length direction of the screw, the protrusion is embedded in the slot, the protrusion is fixed to the inner wall of the second worm gear, the second worm gear is sleeved on the outer wall of the screw, the second motor is fixedly connected to the welding head connecting plate, the second motor rotating shaft is fixedly connected to one end of the second worm, the second worm is meshed with the second worm gear and both are located in the fixed box.

[0012] As described above, a thick-walled pipe narrow gap full-position automatic welding machine, wherein a polished rod is slidably arranged on the welding head connecting plate, the polished rod slides in a direction approaching or moving away from the pipe, a monitoring camera is rotatably arranged on the polished rod, and the rotating axis is horizontally arranged.

[0013] As described above, in the all-position automatic welding machine for thick-walled pipes with narrow gaps, a wire tube clamp seat is arranged between the welding head connecting plate and the chuck plate, the chuck plate and the wire tube clamp seat are rotatably connected, and the rotating shaft is arranged horizontally.

[0014] As described above, a thick-walled pipe narrow gap full-position automatic welding machine, wherein a straightener is fixed on the welding vehicle, the straightener comprises a base, a positioning wheel and a sliding wheel, the positioning wheel and the sliding wheel are both rotatably arranged on the base, and the rotating axes are arranged in the same direction, two positioning wheels are arranged, adjacent positioning wheels are arranged at intervals on the same straight line, and the sliding wheel is located between adjacent positioning wheels and is staggered with the connecting line of the adjacent positioning wheels.

[0015] As described above, a thick-walled pipe narrow gap full-position automatic welding machine, wherein a lead groove is opened on the base, the lead groove is opened in a direction perpendicular to the line connecting adjacent positioning wheels, a slider and a handwheel with a rod are provided on the base, the slider is located in the lead groove, one end of the handwheel with a rod passes through the base and is rotatably connected to the slider, the handwheel with a rod is threadedly connected to the base, and the sliding wheel is located on the slider.

[0016] The significant effect of the present invention is that compared with the traditional track clamping mechanism, this mechanism effectively improves the rapid connection between the trolley and the track by setting the track and the clamping device, and solves the quality defects in the prior art involving the difficulty of installing the automated welding trolley on the track, and the inaccurate positioning during welding, which leads to the weld not being in a straight line, not being welded in place, etc. This design does not require the installation of additional supporting equipment, reduces the installation space of the track trolley chassis, and has a good running buffer effect and more stable operation; the front and rear wheels are tightened and separated at the same time, which improves the efficiency of loading and unloading.

[0017] Specifically, it includes the following three points:

[0018] 1. The movable wheels and opening and closing components cooperate with the fixed wheels to enable the welding vehicle to adapt to different tracks, saving production costs. It can also adapt to the size of the space around the welding, quickly select tracks of different widths and install them quickly, thereby improving the welding efficiency;

[0019] 2. The setting of the adjustment mechanism can not only adjust the angle of the wire feeding tube clamping mechanism in the horizontal direction but also adjust the height of the wire feeding tube clamping mechanism in the vertical direction;

[0020] 3. The arrangement of the wire feeding tube clamping assembly not only has a simple structure and occupies a small space, but can also clamp wire feeding tubes of different diameters, thereby reducing production costs. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 It is a schematic diagram of the structure of an embodiment of the present application;

[0022] Figure 2 It is a schematic diagram showing part of the structure of the opening and closing components;

[0023] Figure 3 This is a schematic diagram showing part of the structure of the adjustment plate;

[0024] Figure 4It is a schematic diagram of part of the structure showing the location of the regulating mechanism;

[0025] Figure 5 It is a schematic diagram showing the internal structure of the adjustment mechanism after the fixing box is hidden;

[0026] Figure 6 This is a schematic diagram showing part of the structure of the straightener.

[0027] In the figure, 1, track; 11, groove; 2, welding car; 21, fixed wheel; 22, movable wheel; 23, torsion spring; 24, slide rail; 3, opening and closing assembly; 31, crank; 32, adjusting shaft; 33, positioning sleeve; 34, connecting plate; 4, welding head connecting plate; 41, fixing box; 42, fixing block; 43, polished rod; 431, adjusting plate; 44, monitoring camera; 5, wire feeding tube clamping assembly; 51, chuck plate; 52, pressing plate; 6, adjusting Section mechanism; 61, first adjusting component; 611, first motor; 612, first worm gear; 613, first worm; 614, screw; 62, second adjusting component; 621, second motor; 622, second worm; 623, second worm gear; 624, bump; 7, slot; 8, wire tube clamp; 9, straightener; 91, base; 911, lead groove; 912, slider; 913, handwheel with rod; 92, positioning wheel; 93, sliding wheel. DETAILED DESCRIPTION

[0028] A thick-walled pipe narrow gap full-position automatic welding machine comprises a track 1 and a welding car 2. The track 1 is detachably connected and fixed on the outer wall of the pipe. Grooves 11 are provided on the side walls on both sides of the track 1. The grooves 11 are provided along the length direction of the track 1. Fixed wheels 21 are fixedly provided on the outer shell of the welding car 2, and a movable wheel 22 is provided on the slide 93. The fixed wheel 21 and the movable wheel 22 are respectively located on both sides of the track 1. The fixed wheel 21 is located in the groove 11. The movable wheel 22 moves in a direction close to or away from the track 1. An opening and closing component 3 is provided between the movable wheel 22 and the outer shell of the welding car 2. The opening and closing component 3 is used to drive the movable wheel 22 to move, so that the movable wheel 22 cooperates with the fixed wheel 21 to clamp the track 1 or release the clamping of the track 1.

[0029] By adopting the above technical solution, the installation method of the track 1 and the welding car 2 can achieve rapid splicing, and the movement of the movable wheel 22 can adapt to tracks 1 of different widths, so that the welding car 2 clamps the track 1, and there is no need to install additional supporting equipment, thereby reducing the space occupied by the welding car 2. The appropriate track 1 can be quickly selected for splicing and installation, and there is no need to replace the welding car 2, thereby achieving the effect of being able to adapt to welding spaces of different sizes and improving welding efficiency.

[0030] Optionally, the opening and closing assembly 3 includes a crank 31, an adjusting shaft 32, a positioning sleeve 33 and a connecting plate 34, the connecting plate 34 is fixedly connected to the movable wheel 22, one end of the positioning sleeve 33 is rotatably connected to the connecting plate 34, and the other end is threadedly connected to the adjusting shaft 32; the end of the adjusting shaft 32 away from the positioning sleeve 33 is rotatably connected to one end of the crank 31; the crank 31 is rotatably connected to the outer shell of the welding vehicle 2; the rotating shafts of the crank 31 and the outer shell of the welding vehicle 2, the rotating shafts between the positioning sleeve 33 and the connecting plate 34, and the rotating shafts between the positioning sleeve 33 and the connecting plate 34 are all arranged in the same direction, and the setting direction is along the diameter direction of the circular tube.

[0031] By adopting the above technical solution, one end of the crank 31 is rotated, and a lever principle is formed through the crank 31 and the rotating shaft of the outer shell of the welding vehicle 2 and the other end of the crank 31. The crank 31 cooperates with the adjusting shaft 32, the positioning sleeve 33 and the connecting plate 34 to push or pull out the movable wheel 22, thereby realizing the displacement of the movable wheel 22, so that the movable wheel 22 is embedded in the groove 11, and the operation is simple and quick.

[0032] Optionally, a torsion spring 23 is sleeved on the rotating shaft between the crank 31 and the outer shell of the welding vehicle 2 , and the torsion spring 23 is used to provide a force for the movable wheel 22 to always move toward the direction of the track 1 .

[0033] By adopting the above technical solution, the friction between the movable wheel 22 and the groove 11 makes it difficult for the movable wheel 22 to separate from the groove 11, and the existence of the torsion spring 23 further ensures that the movable wheel 22 does not separate from the groove 11. After the existence of the torsion spring 23, the crank 31 is turned to counteract the force brought by the torsion spring 23, so that the movable wheel 22 is away from the groove 11. When the crank 31 is released, the torsion spring 23 drives the crank 31 to drive the movable wheel 22 to automatically reset, thereby ensuring that the movable wheel 22 does not easily separate from the groove 11.

[0034] Optionally, the welding vehicle 2 is provided with a welding head connecting plate 4, and the welding head connecting plate 4 is provided with a wire feeding tube clamping assembly 5 and an adjusting mechanism 6; the wire feeding tube clamping assembly 5 includes a chuck plate 51 and a clamping plate 52, the clamping plate 52 is located on one side of the chuck plate 51, one end of the clamping plate 52 is fixedly connected to the chuck plate 51, and the other end cooperates with the chuck plate 51 to form an open shape; the adjusting mechanism 6 is used to adjust the angle of the wire feeding tube clamping assembly 5 in the horizontal direction and the height in the vertical direction.

[0035] By adopting the above technical solution, using the clamping plate 51 and the clamping plate 52, the structure is simple, so that wire feeding tubes of different diameters can be clamped, and the clamping effect is stable, which avoids the instability of wire feeding and saves production costs.

[0036] Optionally, a fixing box 41 is fixed on the welding head connecting plate 4; the adjusting mechanism 6 includes a first adjusting component 61 and a second adjusting component 62, the first adjusting component 61 includes a first motor 611, a first worm gear 612, a first worm 613 and a screw 614, the first motor 611 is fixedly connected to the welding head connecting plate 4, one end of the first worm 613 is fixedly connected to the rotating shaft of the first motor 611, the first worm 613 is meshed with the first worm gear 612, the first worm gear 612 is ringed on the outer wall of the screw 614 and is threadedly connected to the screw 614, the screw 614 is arranged perpendicular to the first worm 613 and passes through the fixing box 41, the first worm 613 and the first worm gear 612 are both located in the fixing box 41; the second adjusting component 62 is used to drive the screw 614 to rotate.

[0037] By adopting the above technical solution, the first motor 611 rotates, and the first worm gear 612 is driven to rotate through the first worm 613. Since the first worm gear 612 and the screw 614 are threadedly connected, the first worm gear 612 is located inside the fixed box 41 and is limited, and the screw 614 penetrates the fixed box 41. Finally, the screw 614 is displaced relative to the fixed box 41, thereby achieving the effect of changing the height of the clamping mechanism in the vertical direction.

[0038] Optionally, the second adjusting component 62 includes a second motor 621, a second worm gear 623, a second worm 622 and a protrusion 624. A slot 7 is provided on the screw 614, and the slot 7 is provided along the length direction of the screw 614. The protrusion 624 is embedded in the slot 7. The protrusion 624 is fixed to the inner wall of the second worm gear 623. The second worm gear 623 is sleeved on the outer wall of the screw 614. The second motor 621 is fixedly connected to the welding head connecting plate 4. The rotating shaft of the second motor 621 is fixedly connected to one end of the second worm 622. The second worm 622 is meshed with the second worm gear 623 and both are located in the fixed box 41.

[0039] By adopting the above technical solution, the second motor 621 rotates, and the second worm gear 623 is driven to rotate through the second worm 622, and the second worm gear 623 is only sleeved on the screw 614, and there is no threaded connection. When the second worm gear 623 rotates, the protrusion 624 and the slot 7 limit each other, thereby driving the screw 614 to rotate. At this time, the rotation of the screw 614 reversely drives the first adjusting component 61, and the two do not produce obstacles, and the effect of changing the horizontal angle of the clamping mechanism is achieved.

[0040] Optionally, a polished rod 43 is slidably disposed 93 on the welding head connecting plate 4, and the polished rod 43 slides 93 in a direction approaching or moving away from the pipeline, and a monitoring camera 44 is rotatably disposed on the polished rod 43, and the rotation axis is horizontally disposed.

[0041] By adopting the above technical solution, since the welding operation space is small, the adjustment of the first adjustment component 61 and the second adjustment component 62 requires observation of whether the adjustment position is accurate, and also requires observation of whether the welding position is accurate and whether the welding is sufficient. The monitoring camera 44 can be used to facilitate monitoring by the operator.

[0042] Optionally, a wire tube clamp seat 8 is provided between the welding head connecting plate 4 and the clamp plate 51, and the clamp plate 51 is rotatably connected to the wire tube clamp seat 8, and the rotation axis is horizontally arranged.

[0043] By adopting the above technical solution, the chuck plate 51 is rotatably connected to the wire tube clamp seat 8, thereby achieving the effect of adjusting the angle between the wire feeding tube and the horizontal plane, making the wire feeding position more accurate.

[0044] Optionally, a straightener 9 is fixed on the welding vehicle 2, and the straightener 9 includes a base 91, a positioning wheel 92 and a sliding wheel 93. The positioning wheel 92 and the sliding wheel 93 are both rotatably set on the base 91, and the rotating axes are set in the same direction. There are two positioning wheels 92, and adjacent positioning wheels 92 are located on the same straight line and are arranged at intervals. The sliding wheel 93 is located between adjacent positioning wheels 92 and is staggered with the connecting line of adjacent positioning wheels 92.

[0045] By adopting the above technical solution, the welding wire used for welding is in a disc shape, and the welding wire itself has a certain curvature. The bent welding wire is straightened by the straightener 9 to achieve the effect of the welding wire entering the molten pool in a straight line.

[0046] Optionally, a lead groove 911 is provided on the base 91, and the lead groove 911 is provided in a direction perpendicular to the line connecting adjacent positioning wheels 92. A slider 912 and a handwheel with a rod 913 are provided on the base 91. The slider 912 is located in the lead groove 911, and one end of the handwheel with a rod 913 passes through the base 91 and is rotatably connected to the slider 912. The handwheel with a rod 913 is threadedly connected to the base 91, and the sliding wheel 93 is located on the slider 912.

[0047] By adopting the above technical solution, the position of the sliding wheel 93 can be changed by turning the hand wheel, so that welding wires with different diameters can be corrected.

[0048] Here is a specific example

[0049] As attached Figure 1As shown, a thick-walled pipe narrow gap full-position automatic welding machine includes a track 1 and a welding car 2. The track 1 is assembled and fixed on the outer wall of the pipe. The welding car 2 is detachably connected to the track 1. The welding car 2 is provided with fixed wheels 21, movable wheels 22 and an opening and closing component 3. The fixed wheels 21 and the movable wheels 22 are distributed on both sides of the track 1. The opening and closing component 3 is used to drive the movable wheels 22 to move toward or away from the track 1, so that the movable wheels 22 and the fixed wheels 21 clamp the track 1, and then the welding car 2 moves on the track 1 and welds the pipe. When the welding space is narrow and it is necessary to select tracks 1 of different widths, directly select tracks 1 of different widths without replacing the welding car 2. The opening and closing component 3 cooperates with the movable wheels 22 to enable the welding car 2 to adapt to tracks 1 of different widths, thereby achieving the effect of convenient construction and improving work efficiency.

[0050] refer to Figure 1 and Figure 2 The side walls of the track 1 are provided with grooves 11, which are provided along the length direction of the track 1, and the fixed wheels 21 and the movable wheels 22 are both located in the grooves 11. The fixed wheels 21 are fixedly connected to the outer shell of the welding vehicle 2, and a slide rail 24 is fixed to the welding outer shell. The length direction of the slide rail 24 is arranged in a direction close to or away from the fixed wheels 21, and the movable wheels 22 slide on the slide rail 24.

[0051] For ease of description, the subsequent description is made assuming that the welding vehicle 2 is located on the top of the pipeline.

[0052] refer to Figure 2 and Figure 3The opening and closing assembly 3 includes a crank 31, an adjusting shaft 32, a positioning sleeve 33 and a connecting plate 34. The connecting plate 34 is fixedly connected to the side wall of the movable wheel 22 away from the fixed wheel 21. In this embodiment, two movable wheels 22 are provided, and the connecting plate 34 connects all the movable wheels 22 into a whole. The positioning sleeve 33 is located at the middle position of the connecting plate 34, one end of the positioning sleeve 33 is rotatably connected to the connecting plate 34, the rotating shaft is vertically arranged, the other end of the positioning sleeve 33 is sleeved on the outer wall of one end of the adjusting shaft 32, the positioning sleeve 33 is threadedly connected to the adjusting shaft 32, the end of the adjusting shaft 32 away from the positioning sleeve 33 is rotatably connected to the crank 31, and the rotating shaft is vertically arranged; the crank 31 is rotatably connected to the outer shell of the welding vehicle 2, and the rotating shaft is vertically arranged; a torsion spring 23 is arranged between the crank 31 and the welding vehicle 2, the torsion spring 23 is sleeved on the rotating shaft between the crank 31 and the welding vehicle 2, when the torsion spring 23 is in a natural state, the movable wheel 22 and the fixed wheel 21 are at the minimum distance, and the track 1 larger than the minimum distance between the movable wheel 22 and the fixed wheel 21 can be selected to achieve that the torsion spring 23 always provides the movable wheel 22 with a force to approach the track 1, so that the movable wheel 22 and the fixed wheel 21 are stably located in the groove 11. The threaded connection between the positioning sleeve 33 and the adjusting shaft 32 can adjust the shortest distance between the movable wheel 22 and the fixed wheel 21 , which can be achieved by disassembling the rotating shaft between the positioning sleeve 33 and the connecting plate 34 and then rotating the positioning sleeve 33 .

[0053] refer to Figure 3 A welding head connecting plate 4 is slidably provided on the welding vehicle 2, and the welding head connecting plate 4 moves in a direction close to or away from the welding vehicle 2. A driving device capable of realizing unidirectional distance change, such as a cylinder or an oil cylinder, is provided between the welding vehicle 2 and the welding head connecting plate 4. A fixing block 42 and a fixing box 41 are fixed on the welding head connecting plate 4, and the fixing block 42 and the fixing box 41 are arranged at intervals and are both located on the side wall of the welding head connecting plate 4 away from the welding vehicle 2.

[0054] refer to Figure 3 and Figure 4 , a light rod 43 is arranged on the fixed block 42, the light rod 43 is arranged vertically, the light rod 43 passes through the fixed block 42, one side of the fixed block 42 is open, a screw is arranged on the fixed block 42, and the size of the opening of the fixed block 42 is controlled by the degree of tightening of the screw, so as to realize the locking of the light rod 43 relative to the fixed block 42 after the position change. A monitoring camera 44 is arranged at the end of the light rod 43 close to the pipeline, and an adjustment plate 431 is fixed on the light rod 43, the adjustment plate 431 is arranged vertically, an arc-shaped hole is opened on the adjustment plate 431, and the arc-shaped concave surface is arranged toward the pipeline direction, the monitoring camera 44 is rotatably connected with the adjustment plate 431, and the rotation axis is arranged horizontally, and a screw is also arranged on the adjustment plate 431, and the screw passes through the arc-shaped hole and is threadedly connected with the adjustment camera, and the degree of tightening of the screw realizes the locking of the monitoring camera 44 after adjusting the inclination angle with the horizontal plane along the arc-shaped hole.

[0055] refer to Figure 4 and Figure 5 An adjustment mechanism 6 is provided between the welding head connecting plate 4 and the fixing box 41 , and the adjustment mechanism 6 includes a first adjustment component 61 and a second adjustment component 62 . The first adjusting component 61 includes a first worm gear 612, a first worm 613, a screw 614 and a first motor 611. The first motor 611 and the fixed box 41 are located on both sides of the welding head connecting plate 4. The first motor 611 is fixedly connected to the welding head connecting plate 4. The rotating shaft of the first motor 611 passes through the welding head connecting plate 4 and is located in the fixed box 41. The rotating shaft of the first motor 611 is fixedly connected to the first worm 613. The first worm 613 and the first worm gear 612 are both located in the fixed box 41, and the first worm 613 and the first worm gear 612 can only rotate relative to the fixed box 41 and cannot be displaced. The first worm 613 and the first worm gear 612 are meshed, and the screw 614 is vertically arranged. The screw 614 passes through the fixed box 41, and the first worm gear 612 is sleeved on the outer wall of the screw 614 and is threadedly connected to the screw 614, so as to achieve the effect of rotating the first motor 611 and driving the screw 614 to move in the vertical direction.

[0056] refer to Figure 4 and Figure 5 The second motor 621 and the first motor 611 are fixed on the side wall of the same side of the welding head connecting plate 4. The rotating shaft of the second motor 621 penetrates the welding head connecting plate 4 and then goes deep into the fixing box 41 and is fixedly connected with the second worm 622. A protrusion 624 is fixed on the inner wall of the second worm wheel 623. A slot 7 is provided on the outer wall of the screw 614. The slot 7 is provided along the length direction of the screw 614. The second worm wheel 623 is sleeved on the outer wall of the screw 614 and the protrusion 624 is embedded in the slot 7. The second worm wheel 623 is meshed with the second screw 614, so as to start the second motor 621 and realize the effect of self-rotation of the screw 614. When the screw 614 rotates, it can reversely drive the first adjustment component 61, and the two do not conflict with each other.

[0057] refer to Figure 4 , a wire tube clamp seat 8 is fixed at the end of the screw rod 614 close to the pipe. The wire tube clamp seat 8 is concave in this embodiment so as not to block the monitoring line of sight of the monitoring camera 44. A wire feeding tube clamp assembly 5 is arranged at the end of the wire tube clamp seat 8 away from the screw rod 614. The wire feeding tube clamp assembly 5 includes a clamp plate 51 and a clamping plate 52. The clamp plate 51 is rotatably connected to the wire tube clamp seat 8. The rotatable connection method is the same as the rotatable connection method between the monitoring camera 44 and the adjustment plate 431, so as to realize the tilt angle of the clamped wire tube in the vertical direction; the clamping plate 52 is located on one side of the clamp plate 51, one end of the clamping plate 52 is fixedly connected to the clamp plate 51, and the other end is open to the clamp plate, and the wire tube is clamped between the clamping plate 52 and the clamp plate 51.

[0058] refer to Figure 4 and Figure 6 , a straightener 9 is fixed on the welding vehicle 2, and the straightener 9 includes a base 91, a positioning wheel 92 and a sliding wheel 93. In this embodiment, two positioning wheels 92 are provided, and adjacent positioning wheels 92 are arranged at intervals. The sliding wheel 93 is located between adjacent positioning wheels 92 and is staggered with the connecting line of adjacent positioning wheels 92. A slider 912 and a handwheel with a rod 913 are provided on the base 91. A lead groove 911 is opened on the base 91, and the lead groove 911 is opened along a direction perpendicular to the connecting line of adjacent positioning wheels 92. The slider 912 is located in the lead groove 911, and one end of the handwheel with a rod 913 passes through the base 91 and is rotatably connected to the slide groove, that is, the handwheel with a rod 913 rotates relative to the slider 912, and a bearing is arranged between the handwheel with a rod 913 and the slider 912 to achieve this. The handwheel with a rod 913 is threadedly connected to the base 91, the positioning wheel 92 is rotatably arranged on the top of the base 91, and the sliding wheel 93 is rotatably arranged on the top of the slider 912, and the rotating shafts are all arranged vertically. The distance between the sliding wheel 93 and the positioning wheel 92 can be adjusted by rotating the hand wheel 913 with a rod, thereby achieving straightening of welding wires with different diameters.

[0059] The implementation principle of a thick-walled pipe narrow gap full-position automatic welding machine in an embodiment of the present application is as follows: a track 1 of appropriate width is selected and assembled on the outer wall of the pipe, the crank 31 is turned to pull the movable wheel 22 away from the fixed wheel 21, the welding vehicle 2 is placed on the track 1, the crank 31 is loosened so that the fixed wheel 21 and the movable wheel 22 are both located in the groove 11, the welding wire is straightened by the straightener 9, the wire feeding tube is clamped on the wire feeding tube clamping assembly 5, the adjustment mechanism 6 is started, the vertical position and the horizontal angle of the wire feeding tube are adjusted, and the monitoring camera 44 is used to monitor whether the position of the wire feeding tube is adjusted in place, so as to adapt to changes in the welding space and improve welding efficiency.

[0060] The embodiments of this specific implementation method are all preferred embodiments of the present application, and are not intended to limit the protection scope of the present application. Therefore, all equivalent changes made based on the structure, shape, and principle of the present application should be included in the protection scope of the present application.

Claims

1. A thick-walled pipe narrow gap full-position automatic welding machine, characterized by: The invention comprises a track (1) and a welding vehicle (2), wherein the track (1) is detachably connected and fixed on the outer wall of a pipe, grooves (11) are provided on the side walls on both sides of the track (1), and the grooves (11) are provided along the length direction of the track (1), a fixed wheel (21) is fixedly provided on the outer shell of the welding vehicle (2), and a movable wheel (22) is provided on the slide (93), the fixed wheel (21) and the movable wheel (22) are respectively located on both sides of the track (1), the fixed wheel (21) is located in the groove (11), and the movable wheel (22) moves in a direction approaching or moving away from the track (1), and an opening and closing component (3) is provided between the movable wheel (22) and the outer shell of the welding vehicle (2), and the opening and closing component (3) is used to drive the movable wheel (22) to move, so that the movable wheel (22) cooperates with the fixed wheel (21) to clamp the track (1) or release the clamping of the track (1).

2. The thick-walled pipe narrow gap all-position automatic welding machine according to claim 1, characterized in that: The opening and closing assembly (3) comprises a crank (31), an adjusting shaft (32), a positioning sleeve (33) and a connecting plate (34); the connecting plate (34) is fixedly connected to the movable wheel (22); one end of the positioning sleeve (33) is rotatably connected to the connecting plate (34), and the other end is threadedly connected to the adjusting shaft (32); one end of the adjusting shaft (32) away from the positioning sleeve (33) is rotatably connected to one end of the crank (31); the crank (31) is rotatably connected to the outer shell of the welding vehicle (2); the rotation axis of the crank (31) and the outer shell of the welding vehicle (2), the rotation axis between the positioning sleeve (33) and the connecting plate (34), and the rotation axis between the positioning sleeve (33) and the connecting plate (34) are all arranged in the same direction, and the arrangement direction is along the diameter direction of the circular tube.

3. The thick-walled pipe narrow gap all-position automatic welding machine as claimed in claim 2, characterized in that: A torsion spring (23) is sleeved on the rotating shaft between the crank (31) and the outer shell of the welding vehicle (2). The torsion spring (23) is used to provide a force for the movable wheel (22) to always move in a direction close to the track (1).

4. The thick-walled pipe narrow gap all-position automatic welding machine as claimed in claim 3, characterized in that: The welding vehicle (2) is provided with a welding head connecting plate (4), and a wire feeding tube clamping assembly (5) and an adjusting mechanism (6) are provided on the welding head connecting plate (4); the wire feeding tube clamping assembly (5) comprises a clamping plate (51) and a clamping plate (52), wherein the clamping plate (52) is located on one side of the clamping plate (51), one end of the clamping plate (52) is fixedly connected to the clamping plate (51), and the other end cooperates with the clamping plate (51) to form an open shape; the adjusting mechanism (6) is used to adjust the angle of the wire feeding tube clamping assembly (5) in the horizontal direction and the height in the vertical direction.

5. The thick-walled pipe narrow gap all-position automatic welding machine as claimed in claim 4, characterized in that: A fixing box (41) is fixed on the welding head connecting plate (4); the adjusting mechanism (6) comprises a first adjusting component (61) and a second adjusting component (62); the first adjusting component (61) comprises a first motor (611), a first worm gear (612), a first worm (613) and a screw (614); the first motor (611) is fixedly connected to the welding head connecting plate (4); one end of the first worm (613) is connected to the first motor (611); The rotating shaft is fixedly connected, the first worm (613) is meshed with the first worm wheel (612), the first worm wheel (612) is sleeved on the outer wall of the screw (614) and is threadedly connected to the screw (614), the screw (614) is arranged perpendicular to the first worm (613) and passes through the fixed box (41), and the first worm (613) and the first worm wheel (612) are both located in the fixed box (41); the second adjustment component (62) is used to drive the screw (614) to rotate.

6. The thick-walled pipe narrow gap all-position automatic welding machine as claimed in claim 5, characterized in that: The second adjustment component (62) comprises a second motor (621), a second worm wheel (623), a second worm (622) and a protrusion (624); a slot (7) is provided on the screw (614); the slot (7) is provided along the length direction of the screw (614); the protrusion (624) is embedded in the slot (7); the protrusion (624) is fixed to the inner wall of the second worm wheel (623); the second worm wheel (623) is sleeved on the outer wall of the screw (614); the second motor (621) is fixedly connected to the welding head connecting plate (4); the rotating shaft of the second motor (621) is fixedly connected to one end of the second worm (622); the second worm (622) is meshed with the second worm wheel (623) and both are located in the fixing box (41).

7. The thick-walled pipe narrow gap all-position automatic welding machine as claimed in claim 6, characterized in that: A polished rod (43) is slidably arranged on the welding head connecting plate (4), and the polished rod (43) slides (93) in a direction approaching or moving away from the pipeline. A monitoring camera (44) is rotatably arranged on the polished rod (43), and the rotation axis is arranged horizontally.

8. The thick-walled pipe narrow gap all-position automatic welding machine as claimed in claim 7, characterized in that: A wire tube clamp seat (8) is arranged between the welding machine head connecting plate (4) and the clamp plate (51), and the clamp plate (51) is rotatably connected to the wire tube clamp seat (8), and the rotation axis is arranged horizontally.

9. The thick-walled pipe narrow gap all-position automatic welding machine as claimed in claim 8, characterized in that: A straightener (9) is fixed on the welding vehicle (2), and the straightener (9) comprises a base (91), a positioning wheel (92) and a sliding wheel (93). The positioning wheel (92) and the sliding wheel (93) are both rotatably arranged on the base (91), and the rotation axes are arranged in the same direction. Two positioning wheels (92) are arranged, and adjacent positioning wheels (92) are arranged at intervals on the same straight line. The sliding wheel (93) is located between adjacent positioning wheels (92) and is arranged to be offset from the connecting line of adjacent positioning wheels (92).

10. The thick-walled pipe narrow gap all-position automatic welding machine according to claim 9, characterized in that: The base (91) is provided with a lead groove (911), the lead groove (911) is provided in a direction perpendicular to a line connecting adjacent positioning wheels (92), a slider (912) and a hand wheel with a rod (913) are provided on the base (91), the slider (912) is located in the lead groove (911), one end of the hand wheel with a rod (913) passes through the base (91) and is rotatably connected to the slider (912), the hand wheel with a rod (913) is threadedly connected to the base (91), and the sliding wheel (93) is located on the slider (912).

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