Welding gun adjusting mechanism of narrow-gap all-position automatic welding machine for thick-wall pipeline

Abstract

The invention belongs to the technical field of welding machines, and particularly relates to a welding gun adjusting mechanism of a thick-wall pipeline narrow-gap all-position automatic welding machine. The welding gun adjusting mechanism of the narrow-gap all-position automatic welding machine for the thick-wall pipeline comprises an awakened rail, a welding trolley is arranged on the rail, and an OSC displacement assembly, an AVC adjusting mechanism and a welding gun are arranged on the welding trolley. The rail clamping mechanism has the remarkable effects that compared with a traditional rail clamping mechanism, by arranging the rail and the clamping device, quick connection between the trolley and the rail is effectively improved, and the problems that in the prior art, when an automatic welding trolley is additionally installed on the rail, clamping is difficult, positioning is inaccurate during welding, consequently, a welding seam cannot be straight, and the welding quality is poor are solved. Welding is not in place, and the like. According to the design, additional corollary equipment does not need to be installed, the installation space of the chassis of the rail trolley is reduced, meanwhile, the operation buffering effect is good, and operation is more stable; the front and rear wheels are simultaneously tightened and separated, so that the loading and unloading efficiency is improved.

Description

Technical Field

[0001] The invention belongs to the technical field of welding machines, and in particular relates to a welding gun adjustment mechanism of a thick-walled pipe narrow-gap full-position automatic welding machine. 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 pipeline welding machines. One is fixed on the outer wall of the pipeline, and the welding gun moves with the weld. The other is fixed, and the pipeline rotates relative to the welding gun. The first is to first fix the track on the outer wall of the pipeline, and then connect the welding car that matches the track to the track. The welding car moves on the track to complete the welding of the pipeline. The welding guns of existing automated welding equipment are all adjusted by a single point through a computer. For weld grooves at different positions, the welding gun position can be adjusted by adjusting the welding gun and coordinating with the fixed position of the track.

[0004] In actual operation, the inventors found that the adjustment efficiency of the welding gun was low and it also needed to be coordinated with the position of the track. Single-point adjustment had the limitation of single direction and single dimension. Summary of the invention

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

[0006] The present invention is implemented as follows: a welding gun adjustment mechanism of a thick-walled pipe narrow gap full-position automatic welding machine, which includes a wake-up track, a welding car is arranged on the track, and an OSC displacement component, an AVC adjustment mechanism and a welding gun are arranged on the welding car.

[0007] A welding gun adjustment mechanism of a thick-walled pipe narrow gap full-position automatic welding machine as described above, wherein the OSC displacement assembly includes an electric lead screw slide, a stepper motor, a transmission lead screw and a welding base, the welding base is fixedly connected to the welding trolley, the stepper motor and the welding gun are located on both sides of the welding base, the end of the stepper motor rotating shaft is fixedly connected to one end of the transmission lead screw, the transmission lead screw penetrates the welding base and is slidably connected to the welding gun, and the transmission lead screw is threadedly connected to the welding base; the stepper motor is slidably connected to the welding trolley, and the sliding direction is along the length direction of the transmission lead screw; the electric lead screw slide is arranged parallel to the transmission lead screw, the electric lead screw slide is slidably mounted on the welding base, and the sliding direction is along the length direction of the transmission lead screw, one end of the electric lead screw slide is fixedly connected to the stepper motor housing, and the other end is slidably connected to the welding gun; the AVC adjustment mechanism is located between the OSC displacement assembly and the welding gun, and the AVC adjustment mechanism is used to realize the sliding of the welding gun relative to the OSC displacement assembly, and the sliding direction is along the vertical transmission lead screw length direction.

[0008] A welding gun adjustment mechanism of a thick-walled pipe narrow gap full-position automatic welding machine as described above, wherein the AVC adjustment mechanism includes a first adjustment component and a second adjustment component, the first adjustment component includes an adjustment motor, a first fixed plate, a first driven wheel and a first dovetail slide, the adjustment motor is fixedly connected to the electric lead screw slide and provides power for the first driven wheel, the first fixed plate is fixedly connected to the electric lead screw slide, a first slide is opened on the first fixed plate and the opening direction is opened along the vertical transmission lead screw direction, the first dovetail slide is slidably inserted in the first slide, one end of the first driven wheel passes through the first slide and cooperates with the first dovetail slide, and the first driven wheel drives the first dovetail slide to slide in the first slide; the second adjustment component is used to adjust the position of the welding gun relative to the first adjustment component, and the adjustment direction is the same as the opening direction of the first slide.

[0009] As described above, a welding gun adjustment mechanism of a thick-walled pipe narrow gap full-position automatic welding machine, wherein the second adjustment component includes a second dovetail slide, a second driven wheel and a second fixed plate, the second dovetail slide is fixedly connected to the first dovetail slide, a second slide is opened on the second fixed plate, the opening direction of the second slide is the same as the opening direction of the first slide, the second fixed plate is slidably inserted on the second dovetail slide, and the sliding direction slides along the opening direction of the second slide, one end of the second driven wheel passes through the interior of the second slide and cooperates with the second dovetail slide, and the second driven wheel drives the second fixed plate to slide relative to the second dovetail slide.

[0010] As described above, a welding gun adjustment mechanism of a thick-walled pipe narrow gap full-position automatic welding machine, wherein a driving wheel is fixed on the rotating shaft of the adjusting motor, and a transmission belt is looped between the driving wheel and the first driven wheel; the first driven wheel is rotatably connected to the first fixed plate, the first driven wheel rotates relative to the first fixed plate, a first gear is fixed to the end of the first driven wheel located in the first slideway, a first rack is fixed on the first dovetail slide, and the first gear and the first rack are meshed; the second driven wheel is rotatably connected to the second fixed plate, the second driven wheel rotates relative to the second fixed plate, a second gear is fixed to the end of the second driven wheel located in the second slideway, a second rack is fixed on the second dovetail slide, and the second gear and the second rack are meshed.

[0011] As described above, a welding gun adjustment mechanism of a thick-walled pipe narrow gap all-position automatic welding machine, wherein a first adjustment plate and a second adjustment plate are arranged between the second fixed plate and the welding gun, the first adjustment plate is fixedly connected to the second fixed plate, the side walls of the first adjustment plate and the second adjustment plate facing each other are both arc-shaped side walls, the first adjustment plate is an arc-shaped concave surface, the second adjustment plate is an arc-shaped convex surface, the first adjustment plate and the second adjustment plate are abutted, the second adjustment plate is rotatably connected to the first adjustment plate, the rotating shaft is in the same direction as the rotating shaft of the adjustment motor and passes through the center of the arc surface of the second adjustment plate, and a limiting component is arranged on the first adjustment plate, and the limiting component is used to fix the second adjustment plate after it rotates relative to the first adjustment plate.

[0012] As described above, a welding gun adjustment mechanism of a thick-walled pipe narrow gap full-position automatic welding machine, wherein the limit assembly includes a knob rod and a protrusion, a first adjustment plate concave side wall is provided with a clearance groove, the protrusion is received in the clearance groove, one end of the knob rod passes through the clearance groove and is fixedly connected to the protrusion, and a clamping groove is provided on the convex side wall of the second adjustment plate, and there are multiple clamping grooves, adjacent clamping grooves are provided at intervals along the rotation direction of the second adjustment plate, and the clamping grooves are provided along the length direction of the rotation axis of the second adjustment plate; the knob rod is rotated, and the protrusion is embedded in the clamping groove.

[0013] As described above, a welding gun adjustment mechanism of a thick-walled pipe narrow gap all-position automatic welding machine is provided, wherein a rotating plate is arranged between the second adjustment plate and the welding gun, the welding gun and the rotating plate are detachably connected, the rotating plate is rotatably connected to the second adjustment plate, the rotating shaft is arranged along the length direction of the transmission screw, an arc hole is opened on the rotating plate, the center of the arc hole coincides with the rotating axis of the rotating plate and the second adjustment plate, a screw is arranged on the rotating plate, and the screw is threadedly connected to the second adjustment plate after passing through the arc hole.

[0014] A welding gun adjustment mechanism of a thick-walled pipe narrow gap full-position automatic welding machine as described above, wherein a connecting strip plate is provided between the welding gun and the rotating plate, the connecting strip plate is fixedly connected to the welding gun, a distance adjustment hole is provided on the connecting strip plate, the distance adjustment hole is provided along the length direction of the first rack, a bolt is provided on the connecting strip plate, and the bolt passes through the distance adjustment hole and is threadedly connected to the rotating plate;

[0015] The first driven wheel, the driving wheel and the second driven wheel are located on the same vertical plane.

[0016] As described above, a welding gun adjustment mechanism of a thick-walled pipe narrow gap full-position automatic welding machine, wherein a cold water pipe is fixed on the welding vehicle, one end of the cold water pipe is a pagoda head, and the other end is a quick-plug connector, and a water distribution pipe is connected to the cold water pipe, and the cold water pipe and the water distribution pipe are used for water cooling of the welding gun, the OSC displacement component or the AVC adjustment mechanism.

[0017] 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.

[0018] Specifically, it includes the following three points: 1. The OSC displacement assembly realizes the position adjustment of the welding gun, and the adjustment direction is along the direction of approaching or moving away from the track; 2. The AVC adjustment mechanism is used to realize the sliding of the welding gun relative to the OSC displacement assembly, and the sliding direction is along the direction of approaching or moving away from the pipeline; 3. The setting of the first adjustment plate and the second adjustment plate realizes the adjustment of the tilt angle of the welding gun, and the tilt direction is along the direction of approaching or moving away from the track. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 It is a schematic diagram of the structure of an embodiment of the present application;

[0020] Figure 2 This is a schematic diagram of the structure of the OSC displacement component after the top shell of the welding car is hidden;

[0021] Figure 3 This is an exploded view of the structure of the first adjustment component;

[0022] Figure 4 This is an exploded view of part of the structure to highlight the second adjustment component;

[0023] Figure 5 This is a schematic diagram of the partial structure to highlight the clutch mechanism.

[0024] In the figure, 1, track; 11, first slide; 12, second slide; 13, welding gun; 14, rotating plate; 141, arc hole; 15, connecting strip; 151, distance adjustment hole; 16, welding car; 161, inlet and outlet hole; 2, clutch mechanism; 21, clutch handle; 22, travel motor; 23, travel gear; 24, fastening nut; 25, gantry; 3, OSC displacement assembly; 31, electric lead screw slide; 32, stepping motor; 33, transmission lead screw; 34, welding base; 4, AVC adjustment mechanism; 41, first adjustment assembly; 411, adjustment electric Machine; 412, first fixed plate; 413, first driven wheel; 414, first dovetail slide; 42, second adjusting assembly; 421, second dovetail slide; 422, second driven wheel; 423, second fixed plate; 5, driving wheel; 51, transmission belt; 52, first gear; 53, first rack; 54, second gear; 55, second rack; 6, first adjusting plate; 61, give way groove; 62, connecting block; 7, second adjusting plate; 71, slot; 72, slide; 8, limit assembly; 81, knob rod; 82, bump; 9, cold water pipe; 91, water distribution pipe. DETAILED DESCRIPTION

[0025] A welding gun adjustment mechanism of a thick-walled pipe narrow gap full-position automatic welding machine comprises a track and a welding carriage, wherein the track is detachably connected to the outer wall of the pipe, the welding carriage is slidably arranged on the track, and the welding carriage is provided with a welding gun, an OSC displacement component and an AVC adjustment mechanism; the OSC displacement component comprises an electric lead screw slide, a stepper motor, a transmission lead screw and a welding base, the welding base is fixedly connected to the welding carriage, the stepper motor and the welding gun are located on both sides of the welding base, the end of the stepper motor rotating shaft is fixedly connected to one end of the transmission lead screw, the transmission lead screw penetrates the welding base and is slidably connected to the welding gun, and the transmission lead screw is connected to the welding gun. The moving lead screw is threadedly connected to the welding base; the stepping motor is slidably connected to the welding vehicle, and the sliding direction is along the length direction of the transmission lead screw; the electric lead screw slide is arranged parallel to the transmission lead screw, and the electric lead screw slide is slidably mounted on the welding base, and the sliding direction is along the length direction of the transmission lead screw, one end of the electric lead screw slide is fixedly connected to the stepping motor housing, and the other end is slidably connected to the welding gun; the AVC adjustment mechanism is located between the OSC displacement assembly and the welding gun, and the AVC adjustment mechanism is used to realize the sliding of the welding gun relative to the OSC displacement assembly, and the sliding direction is along the length direction of the vertical transmission lead screw.

[0026] By adopting the above technical solution, the welding vehicle moves on the track to weld the weld on the pipeline, and the stepper motor starts to drive the transmission screw to rotate. Since the transmission screw and the welding base are threadedly connected, and the welding base and the welding vehicle are fixedly connected, the electric screw slide and the welding base form a limit, which limits the rotation of the electric screw slide relative to the welding base, and finally the electric screw slide and the stepper motor move away from or close to the welding gun, thereby achieving the effect of driving the welding gun to move towards or away from the track, so that the welding gun can be close to the weld when the track is stationary, and the AVC adjustment mechanism is used to realize the sliding of the welding gun relative to the OSC displacement component, and the sliding direction is along the vertical transmission screw length direction. The two cooperate with each other to achieve the effect of multi-dimensional welding gun adjustment, thereby overcoming limitations and improving the welding efficiency of different welding layers of multiple passes.

[0027] The AVC adjustment mechanism includes a first adjustment component and a second adjustment component. The first adjustment component includes an adjustment motor, a first fixed plate, a first driven wheel and a first dovetail slide. The adjustment motor is fixedly connected to the electric lead screw slide and provides power for the first driven wheel. The first fixed plate is fixedly connected to the electric lead screw slide. A first slide is opened on the first fixed plate and the opening direction is opened along the vertical transmission screw direction. The first dovetail slide is slidably inserted in the first slide. One end of the first driven wheel passes through the first slide and cooperates with the first dovetail slide. The first driven wheel drives the first dovetail slide to slide in the first slide. The second adjustment component is used to adjust the position of the welding gun relative to the first adjustment component, and the adjustment direction is the same as the opening direction of the first slide.

[0028] By adopting the above technical solution, the adjusting motor is started, and the adjusting motor drives the first driven wheel to rotate. The first driven wheel cooperates with the first dovetail slide to cause the first dovetail slide to move, thereby achieving the effect of adjusting the vertical distance between the welding gun and the weld.

[0029] The second adjustment component includes a second dovetail slide, a second driven wheel and a second fixed plate. The second dovetail slide is fixedly connected to the first dovetail slide. A second slide is opened on the second fixed plate. The opening direction of the second slide is the same as that of the first slide. The second fixed plate is slidably inserted on the second dovetail slide and slides along the opening direction of the second slide. One end of the second driven wheel passes through the interior of the second slide and cooperates with the second dovetail slide. The second driven wheel drives the second fixed plate to slide relative to the second dovetail slide.

[0030] By adopting the above technical solution, the first adjustment component realizes the preliminary adjustment of the vertical distance between the welding gun and the weld, and the second adjustment component realizes the secondary adjustment of the vertical distance between the welding gun and the weld. The adjustment method is the same, except that the manual rotation of the second driven wheel replaces the start of the adjustment motor. The setting of the second adjustment component further expands the adjustment range of the welding gun.

[0031] A driving wheel is fixed on the rotating shaft of the adjusting motor, and a transmission belt is looped between the driving wheel and the first driven wheel; the first driven wheel is rotatably connected to the first fixed plate, the first driven wheel rotates relative to the first fixed plate, a first gear is fixed to the end of the first driven wheel located in the first slideway, a first rack is fixed to the first dovetail slide, and the first gear and the first rack are meshed; the second driven wheel is rotatably connected to the second fixed plate, the second driven wheel rotates relative to the second fixed plate, a second gear is fixed to the end of the second driven wheel located in the second slideway, a second rack is fixed to the second dovetail slide, and the second gear and the second rack are meshed.

[0032] A first adjusting plate and a second adjusting plate are arranged between the second fixed plate and the welding gun, the first adjusting plate is fixedly connected to the second fixed plate, the side walls of the first adjusting plate and the second adjusting plate facing each other are both arc-shaped side walls, the first adjusting plate is an arc-shaped concave surface, the second adjusting plate is an arc-shaped convex surface, the first adjusting plate and the second adjusting plate are abutted, the second adjusting plate is rotatably connected to the first adjusting plate, the rotating shaft is in the same direction as the rotating shaft of the adjusting motor and passes through the center of the arc surface of the second adjusting plate, a limiting assembly is arranged on the first adjusting plate, and the limiting assembly is used to fix the second adjusting plate after it rotates relative to the first adjusting plate.

[0033] By adopting the above technical solution, the second adjustment plate is rotated and then fixed by the limit assembly. At this time, the tip of the welding gun is tilted, and the tilting direction is tilted towards the track or away from the track, thereby achieving the effect of increasing the adjustment range of the welding gun.

[0034] The limit assembly includes a knob rod and a protrusion. A clearance groove is provided on the concave side wall of the first adjustment plate, and the protrusion is received in the clearance groove. One end of the knob rod passes through the clearance groove and is fixedly connected to the protrusion. A clamping groove is provided on the convex side wall of the second adjustment plate. There are multiple clamping grooves, and adjacent clamping grooves are provided at intervals along the rotation direction of the second adjustment plate. The clamping grooves are provided along the length direction of the rotation axis of the second adjustment plate. When the knob rod is rotated, the protrusion is embedded in the clamping groove.

[0035] By adopting the above technical solution, when the protrusion is located in the give way groove, the second adjustment plate can be rotated relative to the first adjustment plate. When it is rotated to a suitable position, the knob rod is rotated, and the knob rod drives the protrusion to rotate out of the give way groove and then into the opposite slot, thereby realizing the limiting of the second adjustment plate. The operation is simple and convenient.

[0036] A rotating plate is arranged between the second adjusting plate and the welding gun, the welding gun and the rotating plate are detachably connected, the rotating plate and the second adjusting plate are rotatably connected, the rotating shaft is arranged along the length direction of the transmission screw, an arc hole is opened on the rotating plate, the center of the arc hole coincides with the rotating axis of the rotating plate and the second adjusting plate, a screw is arranged on the rotating plate, and the screw passes through the arc hole and is threadedly connected to the second adjusting plate.

[0037] By adopting the above technical solution, the rotating plate can be rotated by loosening the screws, and then the rotated rotating plate can be fixed by tightening the screws, thereby achieving the effect of adjusting the tilt angle of the welding gun, and the adjusted tilt direction is different from the tilt direction after adjustment of the second adjustment plate.

[0038] A connecting strip is provided between the welding gun and the rotating plate. The connecting strip is fixedly connected to the welding gun. A distance adjustment hole is provided on the connecting strip. The distance adjustment hole is provided along the length direction of the first rack. A bolt is provided on the connecting strip. The bolt passes through the distance adjustment hole and is threadedly connected to the rotating plate.

[0039] By adopting the above technical solution, the vertical distance between the welding gun and the pipeline can be adjusted by loosening or tightening the bolts.

[0040] The first driven wheel, the driving wheel and the second driven wheel are located on the same vertical plane.

[0041] By adopting the above technical solution, the transmission belt can be put on the driving wheel and the second driven wheel, so that the first adjustment component and the second adjustment component can be powered, reducing the burden on workers.

[0042] A cold water pipe is fixed on the welding vehicle, one end of the cold water pipe is a pagoda head, and the other end is a quick-plug connector. The cold water pipe is connected to a water distribution pipe, and the cold water pipe and the water distribution pipe are used to water-cool the welding gun, the OSC displacement component or the AVC adjustment mechanism.

[0043] By adopting the above technical solution, water distribution pipes are added, which can supply cooling water to multiple devices at the same time, reducing the number of water pipes at the input end, making the overall equipment lightweight, and using pagoda heads and quick-plug connectors to achieve rapid disassembly and assembly of equipment, thereby improving work efficiency.

[0044] By adopting the above technical solution and adding a clutch device, the meshing or disengagement between the traveling gear of the welding vehicle and the track can be achieved. When motor drive is required, the clutch mechanism can be engaged; when the welding vehicle needs to be dragged manually and quickly, the clutch mechanism can be disengaged, thereby achieving rapid positioning of the welding position and improving work efficiency.

[0045] refer to Figure 4 and Figure 5The welding car 16 is provided with a clutch mechanism 2, which includes a clutch handle 21, a travel motor 22, a gantry 25, a travel gear 23 and a fastening nut 24. An inlet and outlet hole 161 is provided on the bottom wall of the welding car 16. The inlet and outlet hole 161 is located just above the track 1 and faces the gear ring carried by the track 1 itself. The outer shell of the travel motor 22 is hinged to the edge of the inlet and outlet hole 161. The hinged manner can be a hinge. A reducer is connected to the travel motor 22, and the output shaft of the reducer is fixedly connected to the travel gear 23. After one end of the travel motor 22 rotates out of the inlet and outlet hole 161, the travel gear 23 meshes with the gear ring carried by the track 1 itself; the gantry 25 spans the inlet and outlet hole 161 and is fixed to the inner wall of the bottom of the welding car 16. The clutch handle 21 is arranged on the gantry 25, and one end of the clutch handle 21 passes through the top of the gantry 25 and abuts against the outer shell of the travel motor 22, thereby ensuring that the travel gear 23 is always meshed with the gear ring carried by the track 1. The fastening nut 24 is looped on the clutch handle 21 and is threadedly connected to the clutch handle 21. The fastening nut 24 is located in the gantry 25 and abuts against the inner wall at the top of the gantry 25. When the clutch handle 21 abuts against the outer shell of the travel motor 22, the fastening nut 24 also abuts against the inner wall at the top of the gantry 25. The clutch handle 21 is rotated to limit the vertical direction of the outer shell of the travel motor 22. The end of the clutch handle 21 can be separated from the abutment state of the outer shell of the travel motor 22 by using the principle of a lever, or other connecting rod structures can be used. The existence of the fastening nut 24 ensures that the clutch handle 21 is locked after limiting the travel motor 22.

[0046] A specific example is given below.

[0047] refer to Figure 1 A thick-walled pipe narrow gap full-position automatic welding machine comprises 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, and the welding car 2 is provided with a fixed wheel 21, a movable wheel 22 and an opening and closing component 3, the fixed wheel 21 and the movable wheel 22 are distributed on both sides of the track 1, and the opening and closing component 3 is used to drive the movable wheel 22 to move toward or away from the track 1, so that the movable wheel 22 and the fixed wheel 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 wheel 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.

[0048] refer to Figure 1 and Figure 2The 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.

[0049] For ease of description, the subsequent description is made assuming that the welding vehicle 2 is located on the top of the pipeline.

[0050] refer to Figure 2 and Figure 3 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 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 .

[0051] 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.

[0052] 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.

[0053] 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.

[0054] 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.

[0055] 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.

[0056] refer to Figure 4 , 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.

[0057] 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.

[0058] 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 welding gun adjustment mechanism for a thick-walled pipe narrow gap all-position automatic welding machine, characterized in that: The invention comprises a wake-up track (1), a welding vehicle (16) is arranged on the track (1), and an OSC displacement component (3), an AVC adjustment mechanism (4) and a welding gun (13) are arranged on the welding vehicle (16).

2. The welding gun adjustment mechanism of the thick-walled pipe narrow gap all-position automatic welding machine according to claim 1, characterized in that: The OSC displacement assembly (3) comprises an electric lead screw slide (31), a stepper motor (32), a transmission lead screw (33) and a welding base (34); the welding base (34) is fixedly connected to the welding vehicle (16); the stepper motor (32) and the welding gun (13) are located on both sides of the welding base (34); the end of the rotating shaft of the stepper motor (32) is fixedly connected to one end of the transmission lead screw (33); the transmission lead screw (33) penetrates the welding base (34) and is slidably connected to the welding gun (13); the transmission lead screw (33) and the welding base (34) are threadedly connected; the stepper motor (32) is slidably connected to the welding vehicle (16); the sliding direction is along the transmission lead screw The electric lead screw slide (31) is arranged in parallel with the transmission lead screw (33), and the electric lead screw slide (31) is slidably mounted on the welding base (34), and the sliding direction is along the length direction of the transmission lead screw (33). One end of the electric lead screw slide (31) is fixedly connected to the housing of the stepper motor (32), and the other end is slidably connected to the welding gun (13); the AVC adjustment mechanism (4) is located between the OSC displacement assembly (3) and the welding gun (13), and the AVC adjustment mechanism (4) is used to realize the sliding of the welding gun (13) relative to the OSC displacement assembly (3), and the sliding direction is along the length direction of the vertical transmission lead screw (33).

3. The welding gun adjustment mechanism of the thick-walled pipe narrow gap all-position automatic welding machine as claimed in claim 2, characterized in that: The AVC adjustment mechanism (4) comprises a first adjustment component (41) and a second adjustment component (42); the first adjustment component (41) comprises an adjustment motor (411), a first fixing plate (412), a first driven wheel (413) and a first dovetail slide (414); the adjustment motor (411) is fixedly connected to the electric lead screw slide (31) and provides power for the first driven wheel (413); the first fixing plate (412) is fixedly connected to the electric lead screw slide (31); and a first slideway (11) is provided on the first fixing plate (412). The opening direction is along the direction of the vertical transmission screw (33), the first dovetail slide (414) is slidably inserted into the first slide (11), one end of the first driven wheel (413) passes through the first slide (11) and cooperates with the first dovetail slide (414), and the first driven wheel (413) drives the first dovetail slide (414) to slide in the first slide (11); the second adjustment component (42) is used to adjust the position of the welding gun (13) relative to the first adjustment component (41), and the adjustment direction is the same as the opening direction of the first slide (11).

4. The welding gun adjustment mechanism of the thick-walled pipe narrow gap all-position automatic welding machine as claimed in claim 3 is characterized by: The second adjustment component (42) includes a second dovetail slide (421), a second driven wheel (422) and a second fixed plate (423). The second dovetail slide (421) is fixedly connected to the first dovetail slide (414). The second fixed plate (423) is provided with a second slideway (12). The opening direction of the second slideway (12) is the same as the opening direction of the first slideway (11). The second fixed plate (423) is slidably inserted on the second dovetail slide (421) and slides along the opening direction of the second slideway (12). One end of the second driven wheel (422) passes through the interior of the second slideway (12) and cooperates with the second dovetail slide (421). The second driven wheel (422) drives the second fixed plate (423) to slide relative to the second dovetail slide.

5. The welding gun adjustment mechanism of the thick-walled pipe narrow gap all-position automatic welding machine as claimed in claim 4, characterized in that: A driving wheel (5) is fixed on the rotating shaft of the regulating motor (411), and a transmission belt (51) is looped between the driving wheel (5) and the first driven wheel (413); the first driven wheel (413) is rotatably connected to the first fixed plate (412), the first driven wheel (413) rotates relative to the first fixed plate (412), a first gear (52) is fixed to the end of the first driven wheel (413) located in the first slideway (11), and a first dovetail slide (414) is fixed to the first driven wheel (413). The rack (53) is meshed with the first gear (52); the second driven wheel (422) is rotatably connected to the second fixed plate (423); the second driven wheel (422) rotates relative to the second fixed plate (423); a second gear (54) is fixed to the end of the second driven wheel (422) located in the second slideway (12); a second rack (55) is fixed on the second dovetail slide (421); and the second gear (54) and the second rack (55) are meshed.

6. The welding gun adjustment mechanism of the thick-walled pipe narrow gap all-position automatic welding machine as claimed in claim 5, characterized in that: A first adjustment plate (6) and a second adjustment plate (7) are arranged between the second fixing plate (423) and the welding gun (13); the first adjustment plate (6) is fixedly connected to the second fixing plate (423); the side walls of the first adjustment plate (6) and the second adjustment plate (7) facing each other are both arc-shaped side walls; the first adjustment plate (6) is an arc-shaped concave surface; the second adjustment plate (7) is an arc-shaped convex surface; the first adjustment plate (6) and the second adjustment plate (7) are in abutment with each other; the second adjustment plate (7) is rotatably connected to the first adjustment plate (6); the rotation axis is in the same direction as the rotation axis of the adjustment motor (411) and passes through the center of the arc surface of the second adjustment plate (7); a limit assembly (8) is arranged on the first adjustment plate (6); the limit assembly (8) is used for fixing the second adjustment plate (7) after it rotates relative to the first adjustment plate (6).

7. The welding gun adjustment mechanism of the thick-walled pipe narrow gap all-position automatic welding machine as claimed in claim 6, characterized in that: The limit assembly (8) comprises a knob rod (81) and a protrusion (82); a first adjustment plate (6) is provided with a clearance groove (61) on the concave side wall; the protrusion (82) is received in the clearance groove (61); one end of the knob rod (81) passes through the clearance groove (61) and is fixedly connected to the protrusion (82); a second adjustment plate (7) is provided with a clamping groove (71) on the convex side wall; a plurality of clamping grooves (71) are provided; adjacent clamping grooves (71) are provided at intervals along the rotation direction of the second adjustment plate (7); and the clamping grooves (71) are provided along the length direction of the rotation axis of the second adjustment plate (7); the knob rod (81) is rotated, and the protrusion (82) is clamped in the clamping groove (71).

8. The welding gun adjustment mechanism of the thick-walled pipe narrow gap all-position automatic welding machine as claimed in claim 7, characterized in that: A rotating plate (14) is arranged between the second adjusting plate (7) and the welding gun (13); the welding gun (13) and the rotating plate (14) are detachably connected; the rotating plate (14) and the second adjusting plate (7) are rotatably connected; the rotating shaft is arranged along the length direction of the transmission screw (33); an arc-shaped hole (141) is opened on the rotating plate (14); the center of the arc-shaped hole (141) coincides with the rotating shaft of the rotating plate (14) and the second adjusting plate (7); a screw is arranged on the rotating plate (14); the screw passes through the arc-shaped hole (141) and is threadedly connected to the second adjusting plate (7).

9. The welding gun adjustment mechanism of the thick-walled pipe narrow gap all-position automatic welding machine as claimed in claim 8, characterized in that: A connecting strip plate (15) is provided between the welding gun (13) and the rotating plate (14), the connecting strip plate (15) is fixedly connected to the welding gun (13), a distance adjustment hole (151) is provided on the connecting strip plate (15), the distance adjustment hole (151) is provided along the length direction of the first rack (53), a bolt is provided on the connecting strip plate (15), and the bolt passes through the distance adjustment hole (151) and is threadedly connected to the rotating plate (14); The first driven wheel (413), the driving wheel (5) and the second driven wheel (422) are located on the same vertical plane.

10. The welding gun adjustment mechanism of the thick-walled pipe narrow gap all-position automatic welding machine as claimed in claim 9, characterized in that: A cold water pipe (9) is fixed on the welding vehicle (16), one end of the cold water pipe (9) is a pagoda head, and the other end is a quick-connect connector. The cold water pipe (9) is connected to a water distribution pipe (91), and the cold water pipe (9) and the water distribution pipe (91) are used to water-cool the welding gun (13), the OSC displacement component (3) or the AVC adjustment mechanism (4).

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