Multi-angle welding tool for welding cylindrical shell of petroleum separator

Abstract

The invention discloses a multi-angle welding tool for welding a cylindrical shell of a petroleum separator, relates to the technical field of petroleum machining equipment, and provides the following scheme that the multi-angle welding tool comprises a welding gun body, and further comprises supporting mechanisms arranged at the two ends of the whole tool and used for carrying out balanced supporting on the two ends of the welding position in the cylindrical shell of the petroleum separator to be welded; the transverse welding mechanism is arranged between the two supporting mechanisms and used for driving the welding gun body to move transversely. Longitudinal and circumferential welding seam welding can be independently completed, arc welding seam welding can also be cooperatively achieved, the distance between the welding gun body and a welding point can be accurately adjusted, shells with different diameters and lengths can be adapted, the whole set of tool does not need to be replaced, pressure feedback of an extrusion sensing block is matched, the inner wall of the shell can be clamped in a self-adaptive mode, and it is guaranteed that a welding area is horizontal and free of displacement; dislocation weld defects are reduced, movement errors of the welding gun body are controlled, weld forming uniformity is guaranteed, and the problems of undercut and incomplete fusion are avoided.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of petroleum machining equipment, and particularly relates to a multi-angle welding tool for welding a cylindrical shell of a petroleum separator. BACKGROUND

[0002] As a key equipment in the process of petroleum exploitation and processing, the cylindrical shell of a petroleum separator is usually welded by multiple cylinder segments, a head and a flange, and the welding quality directly affects the sealing performance, structural strength and service life of the separator. Since the welding positions of the cylindrical shell involve multiple forms such as circumferential welds, longitudinal welds and variable-angle interface welds, and the shell has a large size and heavy weight, the existing tools are mostly designed with fixed angles or can only realize limited angle turning, and thus cannot adapt to the welding requirements of different orientations and different inclinations. For special conditions such as the oblique welds between the end of the shell and the head and the misaligned welds when the cylinder segments are connected, the shell needs to be disassembled and adjusted multiple times, which is complicated and has low positioning accuracy. Meanwhile, the existing tools are usually designed for specific specifications of the cylindrical shell, and when the diameter and length of the shell change, the entire tool needs to be replaced or complicated modification is required, which has poor universality, increases production cost and operation cycle, and during multi-angle welding, the turning and fixing of the shell rely on manual assistance, which is labor-intensive and may cause the shell to shake or fall due to locking failure of the tool, thus posing a safety hazard. Therefore, there is an urgent need for a welding tool with precise and flexible angle adjustment, stable and reliable positioning, strong adaptability and safe operation to solve the technical problems in the welding process of the cylindrical shell of the petroleum separator. SUMMARY

[0003] The multi-angle welding tool for welding the cylindrical shell of the petroleum separator provided by the present application solves the above-mentioned deficiencies in the prior art.

[0004] To achieve the above-mentioned purposes, the present application adopts the following technical solutions: A multi-angle welding tool for welding the cylindrical shell of a petroleum separator, comprising a welding gun body, further comprising: A support mechanism at both ends of the overall tool for balancing and supporting the two ends of the internal welding position of the cylindrical shell of the petroleum separator to be welded; A transverse welding mechanism between the two support mechanisms for driving the welding gun body to move transversely and transversely weld the internal welding position of the cylindrical shell of the petroleum separator to be welded; A spacing adjustment mechanism between the transverse welding mechanisms for adjusting the distance of the transverse welding mechanisms so that one end of the welding gun body abuts the welding point; A circumferential welding mechanism on one side of the spacing adjustment mechanism for driving the welding gun body to move circumferentially.

[0005] Further, the supporting mechanism comprises a bidirectional threaded rod, first moving blocks are threadedly connected to two ends of the bidirectional threaded rod respectively, a plurality of traction plates are arrayedly and rotatably connected to the first moving blocks, support blocks are rotatably connected to other ends of the plurality of traction plates respectively, extrusion sensing blocks are fixedly connected to outer sides of the support blocks respectively, first limiting plates are fixedly connected to one sides of the plurality of support blocks respectively, limiting grooves are formed in the first limiting plates, receiving bins are rotatably connected to the two ends of the bidirectional threaded rod respectively, and limiting blocks are fixedly connected to interiors of the receiving bins corresponding to the limiting grooves.

[0006] Further, fixed frames are fixedly connected to opposite sides of the two receiving bins respectively, a bearing sleeve is rotatably connected to one end of the fixed frame, the bearing sleeve is fixedly connected with the bidirectional threaded rod, movable grooves are formed in one sides of the receiving bins corresponding to the plurality of traction plates, the traction plates are movably sleeved in the interiors of the movable grooves, the support blocks are movably sleeved in the interiors of the receiving bins, and a driving assembly is arranged on one side of the bidirectional threaded rod.

[0007] Further, the distance adjusting mechanism comprises a linkage sleeve rotatably connected with the bidirectional threaded rod, two linkage plates are fixedly connected to the linkage sleeve, fixed blocks are fixedly connected to two ends of the two linkage plates respectively, lifting swing arms are rotatably connected to the fixed blocks respectively, pushing blocks are rotatably connected to other ends of the lifting swing arms, sliding rods are slidably connected to the pushing blocks respectively, the sliding rods are movably sleeved in the interiors of the pushing blocks, connecting plates are fixedly connected to two ends of the sliding rods respectively, limiting springs are fixedly connected between one sides of the pushing blocks and the connecting plates, the sliding rods are movably sleeved in the interiors of the limiting springs, and a hydraulic push rod motor is fixedly connected between the two fixed blocks.

[0008] Further, the transverse welding mechanism comprises a mounting frame fixedly connected to one side of the connecting plate, a threaded rod is rotatably connected to the interior of the mounting frame, a second moving block is threadedly connected to the threaded rod, a balance rod is fixedly connected to one side of the second moving block, a second limiting plate is fixedly connected to one side of the mounting frame, a moving groove is formed in the second limiting plate corresponding to the balance rod, the balance rod is movably sleeved in the interior of the moving groove, a clamping assembly is fixedly connected to the other side of the second moving block, and the welding gun body is fixedly mounted on the clamping assembly.

[0009] Further, a driven gear is fixedly connected to one end of the threaded rod, a motor frame is fixedly connected to one side of the mounting frame, a first motor is fixedly connected to the motor frame, a first driving gear is fixedly connected to an output end of the first motor, one side of the first driving gear is in meshing transmission with the driven gear, and one side of the mounting frame is fixedly connected with an output end of the hydraulic push rod motor.

[0010] Further, the circumferential welding mechanism comprises a gear ring fixedly connected with one side of a linkage sleeve, one side of the linkage sleeve is rotationally connected with a balance frame, the top of the balance frame is fixedly connected with a second motor, the output end of the second motor is fixedly connected with a second drive gear, and one side of the second drive gear is in meshing transmission with the gear ring.

[0011] Further, the driving assembly comprises a driving motor fixedly connected with the bottom of the balance frame, the output end of the driving motor is fixedly connected with a second belt pulley, one side of the bidirectional threaded rod is fixedly connected with a first belt pulley corresponding to the second belt pulley, the same belt is in transmission connection with the first belt pulley and the second belt pulley outside, the balance frame is provided with a through hole corresponding to the belt, and the belt is movably sleeved in the through hole.

[0012] Further, the bottom of each of the two fixing frames is fixedly connected with a support frame, a movement control box and an electric welding control box are respectively fixedly connected to the two support frames, the electric welding control box is electrically connected with the welding gun body, and the two sides of the two support frames are respectively rotationally connected with movement wheels.

[0013] Compared with the prior art, the present application has the following advantages: 1. The present application can separately complete longitudinal and circumferential welding, and can also cooperatively realize arc welding (such as variable-diameter transition welding), which is suitable for various welding forms of the separator shell. 2. The present application can accurately adjust the distance between the welding gun body and the welding point by installing the spacing adjustment mechanism, and through the linkage of the hydraulic push rod and the swing arm, and the buffering of the limiting spring, which is suitable for shells with different diameters and lengths without the need to replace the entire tooling. 3. The present application can self-adaptively clamp the inner wall of the shell by the design of bidirectional threaded rod + multiple groups of traction plates, and the pressure feedback of the extrusion sensing block, which can ensure the horizontal and displacement-free welding area, reduce misalignment welding defects, control the movement error of the welding gun body by the cooperation of the balance bar and the limiting plate during horizontal welding and the positioning of the gear ring and the balance frame during circumferential welding, and avoid the problems of edge biting and incomplete fusion. 4. The present application can realize the full-process automation of automatic positioning, self-adaptive support, accurate alignment and welding forming by the linkage of the movement control box and the electric welding control box, which does not need manual assistance to turn over or adjust the shell, reduces the tooling modification or replacement cost during welding of different specifications of shells, shortens the operation cycle, and improves the batch production efficiency. In summary, the device can not only complete longitudinal, ring weld welding alone, but also cooperatively realize arc weld welding, can accurately adjust the distance between the welding gun body and the welding point, adapt to different diameter, length of shell, without replacing the whole tooling, matched with extrusion sensing block pressure feedback, can self-adapt clamping shell inner wall, ensure that the welding area is horizontal and has no displacement, reduce misalignment weld defects, control the movement error of the welding gun body, ensure that the weld is uniformly formed, avoid the problem of biting edge and incomplete fusion. BRIEF DESCRIPTION OF DRAWINGS

[0014] Figure 1 It is a whole first overhead perspective structural schematic diagram of a multi-angle welding tool for petroleum separator cylindrical shell welding proposed by the application; Figure 2 It is a whole second overhead perspective structural schematic diagram of a multi-angle welding tool for petroleum separator cylindrical shell welding proposed by the application; Figure 3 It is a whole overhead perspective structural schematic diagram of a multi-angle welding tool for petroleum separator cylindrical shell welding proposed by the application; Figure 4 It is a overhead perspective structural schematic diagram of a transverse welding mechanism and a spacing adjusting mechanism of a multi-angle welding tool for petroleum separator cylindrical shell welding proposed by the application; Figure 5 It is a partial overhead perspective structural schematic diagram of a support mechanism of a multi-angle welding tool for petroleum separator cylindrical shell welding proposed by the application; Figure 6 It is a partial overhead perspective structural schematic diagram of a support mechanism and a driving assembly of a multi-angle welding tool for petroleum separator cylindrical shell welding proposed by the application; Figure 7 It is a overhead perspective structural schematic diagram of a storage bin and a fixing frame of a multi-angle welding tool for petroleum separator cylindrical shell welding proposed by the application; Figure 8 It is a overhead perspective structural schematic diagram of a limiting block of a multi-angle welding tool for petroleum separator cylindrical shell welding proposed by the application.

[0015] As shown in the figure: 1, support mechanism; 101, bidirectional threaded rod; 102, first moving block; 103, traction plate; 104, support block; 105, extrusion sensing block; 106, storage bin; 107, first limit plate; 108, bearing sleeve; 109, fixed frame; 110, first pulley; 111, drive motor; 112, second pulley; 113, belt; 114, limit block; 115, limit groove; 2, spacing adjustment mechanism; 201, connecting sleeve; 202, connecting plate; 203, fixed block; 204, lifting swing arm; 205, push block; 206, slide rod; 207, connecting plate; 208, limit spring; 209, hydraulic push rod motor; 3, transverse welding mechanism; 301, mounting frame; 302, threaded rod; 303, second moving block; 304, second limit plate; 305, balance bar; 306, driven gear; 307, first motor; 308, first drive gear; 309, clamping assembly; 4, circumferential welding mechanism; 401, balance frame; 402, second motor; 403, second drive gear; 404, gear ring; 5, support frame; 6, movement control box; 7, electric welding control box; 8, welding torch body. DETAILED DESCRIPTION

[0016] The technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application. Obviously, the described embodiments are only some of the embodiments of the present application, not all.

[0017] In the description of the present application, it should be understood that the terms "upper", "lower", "front", "back", "left", "right", "top", "bottom", "inner", "outer" and the like indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the present application and simplifying the description, and do not indicate or imply that the device or element referred to must have a particular orientation, be constructed and operated in a particular orientation, therefore it cannot be understood as a limitation of the present application.

[0018] Embodiment 1 refers to Figures 1-8 : A multi-angle welding tool for welding a cylindrical shell of an oil separator, comprising a welding torch body 8, further comprising: a support mechanism 1, a spacing adjustment mechanism 2, a transverse welding mechanism 3 and a circumferential welding mechanism 4; The supporting mechanism 1 comprises a bidirectional threaded rod 101, first moving blocks 102 are threadedly connected to two ends of the bidirectional threaded rod 101 respectively, a plurality of traction plates 103 are arrayedly and rotatably connected to the first moving blocks 102, support blocks 104 are rotatably connected to the other ends of the plurality of traction plates 103 respectively, extrusion sensing blocks 105 are fixedly connected to the outer sides of the support blocks 104 respectively, first limiting plates 107 are fixedly connected to one side of the plurality of support blocks 104 respectively, limiting grooves 115 are formed in the first limiting plates 107, receiving bins 106 are rotatably connected to the two ends of the bidirectional threaded rod 101 respectively, limiting blocks 114 are fixedly connected to the interiors of the receiving bins 106 at the limiting grooves 115, the limiting blocks 114 are movably sleeved in the interiors of the limiting grooves 115, fixed frames 109 are fixedly connected to the opposite sides of the two receiving bins 106 respectively, bearing sleeves 108 are rotatably connected to one end of the fixed frames 109, the bearing sleeves 108 are fixedly connected with the bidirectional threaded rod 101, movable grooves are formed in one side of the receiving bins 106 corresponding to the plurality of traction plates 103, the traction plates 103 are movably sleeved in the interiors of the movable grooves, the support blocks 104 are movably sleeved in the interiors of the receiving bins 106, and a driving assembly is arranged on one side of the bidirectional threaded rod 101; When the bidirectional threaded rod 101 rotates, the two first moving blocks 102 move in opposite directions, so as to drive the traction plates 103 to flip and swing, drive the support blocks 104 to move stably along the limiting blocks 114 through the first limiting plates 107, and drive the extrusion sensing blocks 105 to abut against the interiors of the petroleum separator cylindrical shells, and send the extrusion sensing data information to the mobile control box 6, so as to control the driving motor 111 to stop running, so that the bidirectional threaded rod 101 stops rotating, the support blocks 104 support the welding point peripheral area or the butt joint component, and the welding area and the butt joint component are kept in the same horizontal plane.

[0019] In the application, the pitch adjusting mechanism 2 comprises a linkage sleeve 201 rotationally connected with the bidirectional threaded rod 101, two linkage plates 202 are fixedly connected on the linkage sleeve 201, two fixed blocks 203 are fixedly connected at two ends of the two linkage plates 202 respectively, lifting swing arms 204 are rotationally connected on the fixed blocks 203 respectively, push blocks 205 are rotationally connected at the other ends of the lifting swing arms 204, slide rods 206 are slidingly connected on the push blocks 205 respectively, the slide rods 206 are movably sleeved in the interiors of the push blocks 205, connecting plates 207 are fixedly connected at two ends of the slide rods 206 respectively, limit springs 208 are fixedly connected between one side of the push block 205 and the connecting plate 207, the slide rods 206 are movably sleeved in the interiors of the limit springs 208, a hydraulic push rod motor 209 is fixedly connected between the two fixed blocks 203, the hydraulic push rod motor 209 drives the mounting frame 301 to move when starting, and the push block 205 moves along the slide rod 206 stably through the lifting swing arm 204, so that the mounting frame 301 always keeps a balanced state, and the welding gun body 8 and the same horizontal plane welding point can be abutted.

[0020] In the application, the transverse welding mechanism 3 comprises a mounting frame 301 fixedly connected on one side of the connecting plate 207, a threaded rod 302 is rotationally connected in the interior of the mounting frame 301, a second moving block 303 is threadedly connected on the threaded rod 302, a balance bar 305 is fixedly connected on one side of the second moving block 303, a second limit plate 304 is fixedly connected on one side of the mounting frame 301, a moving groove is formed on the second limit plate 304 corresponding to the balance bar 305, the balance bar 305 is movably sleeved in the interior of the moving groove, a clamping assembly 309 is fixedly connected on the other side of the second moving block 303, the welding gun body 8 is fixedly installed on the clamping assembly 309, a driven gear 306 is fixedly connected at one end of the threaded rod 302, a motor frame is fixedly connected on one side of the mounting frame 301, a first motor 307 is fixedly connected on the motor frame, a first driving gear 308 is fixedly connected at the output end of the first motor 307, one side of the first driving gear 308 is in meshing transmission with the driven gear 306, one side of the mounting frame 301 is fixedly connected with the output end of the hydraulic push rod motor 209, the first motor 307 drives the rotation of the threaded rod 302 through the meshing of the first driving gear 308 and the driven gear 306 when starting, so that the second moving block 303 moves along the second limit plate 304 stably through the balance bar 305, and the welding points are uniform when transverse welding.

[0021] In the application, the circumferential welding mechanism 4 comprises a gear ring 404 fixedly connected with one side of the linkage sleeve 201, one side of the linkage sleeve 201 is rotationally connected with a balance frame 401, the top of the balance frame 401 is fixedly connected with a second motor 402, the output end of the second motor 402 is fixedly connected with a second drive gear 403, one side of the second drive gear 403 is in meshing transmission with the gear ring 404, the second motor 402 is started to drive the linkage sleeve 201 to rotate through the meshing of the second drive gear 403 and the gear ring 404, the welding gun body 8 is driven to move circumferentially around the inside of the petroleum separator cylindrical shell through the rotation of the linkage sleeve 201, so that the internal circumferential welding process is realized, and meanwhile, the welding gun body 8 can be driven to move transversely when performing circumferential movement through the starting of the first motor 307, so that the arc welding of the inside of the petroleum separator cylindrical shell is realized, and the welding areas at different positions on the two sides of the petroleum separator cylindrical shell can also be welded.

[0022] In the application, the driving assembly comprises a driving motor 111 fixedly connected with the bottom of the balance frame 401, the output end of the driving motor 111 is fixedly connected with a second belt pulley 112, one side of the bidirectional threaded rod 101 is fixedly connected with a first belt pulley 110 at the position corresponding to the second belt pulley 112, the same belt 113 is in transmission connection with the outside of the first belt pulley 110 and the second belt pulley 112, a through hole is formed in the balance frame 401 at the position corresponding to the belt 113, and the belt 113 is movably sleeved in the through hole, the driving motor 111 is started to drive the rotation of the second belt pulley 112, and at the same time, the first belt pulley 110 is driven to rotate synchronously through the belt 113, so as to drive the rotation of the bidirectional threaded rod 101.

[0023] In the application, the bottoms of the two fixing frames 109 are fixedly connected with support frames 5 respectively, the mobile control box 6 and the electric welding control box 7 are fixedly connected on the two support frames 5 respectively, the electric welding control box 7 is electrically connected with the welding gun body 8, the two sides of the two support frames 5 are rotationally connected with mobile wheels respectively, the mobile control box 6 is electrically connected with the mobile wheels and the extrusion sensing block 105 respectively, is fixedly connected with the balance frame 401 at one end of the one side support frame 5, the mobile control box 6 is used for moving control of the mobile wheels, so that the whole equipment is automatically moved to the welding area, and the support mechanism 1 is electrically controlled, and the electric welding control box 7 is used for working control of the welding gun body 8.

[0024] Working principle: the operator inputs the diameter, length and welding seam type (longitudinal, circumferential or arc) parameters of the shell to be welded through the mobile control box 6, and the PLC control system built in the mobile control box presets the operation threshold values (such as the extension distance of the support block and the welding gun moving speed) of each mechanism according to the parameters; Automatic positioning action control: After the completion of the instruction input, the mobile control box sends a driving signal to the moving wheels on both sides of the support frame 5, and the moving wheels drive the entire tooling to move along the preset track (or ground guide mark) to the port of the shell to be welded, until the storage bin 106 of the support mechanism 1 is aligned with the shell port, the moving wheels are automatically locked, and the initial positioning of the tooling is completed. It is worth mentioning that: the core function of the support mechanism 1 is to adaptively clamp and support the two ends of the welding area from the inside of the shell, ensuring that the shell does not displace and the welding surface remains horizontal during welding. The specific action process is as follows: Drive power transmission; The PLC sends a start signal to the drive motor 111, and the output shaft of the drive motor 111 drives the second pulley 112 to rotate. Through the friction force transmission of the belt 113, the first pulley 110 at one end of the bidirectional threaded rod 101 is driven to rotate synchronously, finally realizing the rotation of the bidirectional threaded rod 101 (the bearing sleeve 108 cooperates with the fixed frame 109 to ensure that the bidirectional threaded rod 101 only rotates without axial movement).

[0025] Support block 104 self-adapting extension; The two ends of the bidirectional threaded rod 101 are reversely threaded, and when it rotates, it drives the two first moving blocks 102 at the ends to move in opposite directions along the rod body (toward the inner wall of the shell). The first moving block 102 drives the arrayed traction plates 103 to flip around the hinge point through the pin shaft, and the traction plates 103 push the support blocks 104 to slide out along the inner wall of the storage bin 106.

[0026] During this process, the first limiting plate 107 on one side of the support block 104 slides along the limiting block 114 inside the storage bin 106 (the limiting groove 115 cooperates with the limiting block 114), limiting the support block 104 to only do radial linear motion, avoiding the support from being unstable due to force deviation.

[0027] Pressure feedback and automatic locking; When the extrusion sensing block 105 outside the support block 104 contacts the inner wall of the shell, the pressure sensor built-in the extrusion sensing block 105 collects real-time contact pressure data and converts the analog signal into a digital signal transmitted to the mobile control box 6. When the pressure value reaches the preset threshold value (such as 0.8MPa, ensuring that the support is stable and does not damage the inner wall of the shell), the mobile control box 6 immediately sends a stop signal to the drive motor 111, and the bidirectional threaded rod 101 stops rotating. The support block 104 maintains the current extension length, achieving rigid balanced support of the two ends of the welding area inside the shell.

[0028] Spacing adjustment mechanism 2: precise alignment of the welding gun and the welding point The function of the spacing adjustment mechanism 2 is to adjust the spatial position of the transverse welding mechanism 3 according to the distance between the welding point and the center of the tooling, so that the welding nozzle of the welding gun body 8 precisely abuts the welding point. The action principle is as follows: Power input and swing arm transmission The PLC sends an extension signal to the hydraulic push rod motor 209 according to the preset weld position parameters, the piston rod of the hydraulic push rod motor 209 extends and retracts along the axial direction, pushes the mounting frame 301 (the carrier of the transverse welding mechanism) fixedly connected thereto to move, and simultaneously drives the fixed blocks 203 at both ends of the linkage plate 202 to move synchronously; The fixed blocks 203 drive the lifting swing arm 204 to overturn around the hinge point through the pin shaft, and the lifting swing arm 204 pushes the push block 205 to slide along the slide rod 206 (the slide rod 206 is fixed at both ends of the connecting plate 207, and the connecting plate 207 is rigidly connected with the mounting frame 301); Balance compensation and stable adjustment; When the push block 205 slides, the limiting spring 208 on one side thereof will extend and retract according to the force condition: when the pushing force of the hydraulic push rod motor 209 is too large, the limiting spring 208 is compressed to buffer the impact force of the push block 205; When the pushing force decreases, the limiting spring 208 resets to ensure that the push block 205 is always in close contact with the lifting swing arm 204, so as to avoid adjustment errors caused by gaps.

[0029] During this process, the sliding cooperation of the slide rod 206 and the push block 205 limits the mounting frame 301 to only make linear motion perpendicular to the axial direction of the bidirectional screw rod 101, ensures that the moving direction of the welding gun body 8 is consistent with the normal direction of the weld, and finally realizes the preliminary alignment of the welding nozzle of the welding gun body 8 and the welding point (with an error controlled within ±0.5 mm).

[0030] Transverse welding mechanism 3: automatic welding of longitudinal welds; The transverse welding mechanism 3 is responsible for driving the welding gun body 8 to move along the axial direction of the shell to complete the welding of longitudinal welds (such as the axial welds of the joint of the cylinder segments), and the action logic and transmission details are as follows: Welding gun body 8 clamping and initial positioning; The welding gun body 8 is fixed on the second moving block 303 through the clamping assembly 309, the elastic clamp built-in the clamping assembly 309 can adapt to the diameters of different models of welding guns, and is locked through bolts to ensure that the welding gun does not loosen during welding; The electric welding control box 7 sends a preheating signal to the welding gun body 8, and the nozzle temperature of the welding gun body 8 rises to the required temperature for welding (such as 800-1000℃ for arc welding), and the preparation before welding is completed.

[0031] Transverse movement and weld forming; The PLC sends a forward / reverse signal to the first motor 307. The output shaft of the first motor 307 drives the first drive gear 308 to rotate. Through gear meshing, the driven gear 306 at one end of the threaded rod 302 rotates, thereby causing the threaded rod 302 to rotate inside the mounting bracket 301 (the two ends of the threaded rod 302 are positioned by deep groove ball bearings to ensure smooth rotation).

[0032] The second moving block 303 on the threaded rod 302 moves axially along the threaded rod 302 due to the thread engagement. At the same time, the balance bar 305 on one side of the second moving block 303 slides along the moving groove of the second limiting plate 304, restricting the second moving block 303 to only make linear motion (to prevent it from rotating with the threaded rod 302), ensuring that the welding torch body 8 moves at a uniform speed along the weld seam trajectory (the moving speed can be adjusted by the speed of the first motor 307, ranging from 0.5 to 2 m / min, to adapt to the welding requirements of shells of different thicknesses).

[0033] The welding control box 7 synchronously sends welding signals to the welding torch body 8, and the welding torch body 8 continuously outputs electric arc and welding wire, completing the continuous welding of the longitudinal weld seam as the second moving block 303 moves.

[0034] Circumferential Welding Mechanism 4: Automated Welding of Circumferential / Circular Arc Welds The circumferential welding mechanism 4 drives the welding torch body 8 to rotate around the central axis of the shell, thereby achieving circumferential welds (such as the butt welds between the cylinder section and the head) or arc welds. The linkage logic between its action and the transverse welding mechanism is as follows: Rotational power transmission; According to the weld type (circumferential / arc), the PLC sends a start signal to the second motor 402. Its output shaft drives the second drive gear 403 to rotate, and through gear meshing, it drives the gear ring 404 on the outside of the linkage sleeve 201 to rotate (the linkage sleeve 201 is connected to the balance frame 401 through the thrust bearing to ensure that the gear ring 404 only rotates and does not move axially).

[0035] The linkage sleeve 201 is rigidly connected to the linkage plate 202 of the spacing adjustment mechanism. Therefore, the rotation of the gear ring 404 will drive the spacing adjustment mechanism 2, the transverse welding mechanism 3 and the welding torch body 8 to rotate around the axis of the bidirectional threaded rod 101 (which coincides with the central axis of the housing), forming the circular motion trajectory of the welding torch body 8.

[0036] Multi-dimensional weld seam co-forming If welding a pure circumferential weld (such as the butt joint between the shell end and the head): the second motor 402 rotates at a constant speed, the welding torch body 8 only makes a circular motion, and the welding control box 7 controls the output parameters of the welding torch body 8 to remain stable, forming a uniform circumferential weld. If the welding arc weld (such as the transition weld at the variable diameter inside the shell): PLC synchronous control of the second motor 402 (circular motion) and the first motor 307 (lateral movement), so that the movement trajectory of the welding gun body 8 is a composite curve of "circumferential + axial", and at the same time, through the distance adjusting mechanism 2, the distance between the welding gun body 8 and the weld is adjusted in real time, ensuring that the curvature of the arc weld is consistent with the variable diameter of the shell, avoiding defects such as undercutting and incomplete fusion.

[0037] Welding is completed and the tool is reset; When the welding gun body 8 moves to the preset weld end point, the second moving block 303 of the transverse welding mechanism 3 (or the gear ring 404 of the circumferential welding mechanism 4) triggers the travel switch, sends a "welding complete" signal to the PLC, and the electric welding control box 7 immediately cuts off the output of the welding gun body 8 arc and welding wire, and the welding gun body 8 stops working and starts cooling.

[0038] Mechanism reset action; PLC controls each mechanism to reset in "reverse order": first, the hydraulic push rod motor 209 piston rod retracts, driving the push block 205 of the distance adjusting mechanism 2 to reset, and the welding gun body 8 separates from the inner wall of the shell; Second, the drive motor 111 is reversed, the bidirectional threaded rod 101 drives the first moving block 102 to move in reverse, and the support block 104 is retracted into the storage compartment 106; Finally, the moving wheel is unlocked, the tool exits the shell port along the original path, and a welding cycle is completed.

[0039] The above is only the preferred specific embodiment of the present application, but the protection scope of the present application is not limited thereto, any person skilled in the art can make equivalent replacement or change according to the technical solution and the inventive concept of the present application within the technical range disclosed by the present application, which should be covered within the protection scope of the present application.

Claims

1. A multi-angle welding tool for welding a cylindrical shell of a petroleum separator, comprising a welding gun body (8), characterized in that, Also include: Supporting mechanism (1), at both ends of the overall tooling, for the balance support of the two ends of the internal welding of the oil separator cylindrical shell to be welded; Transverse welding mechanism (3) between the two supporting mechanisms (1), for driving the welding gun body (8) to move transversely and weld the inside of the oil separator cylindrical shell to be welded transversely; Spacing adjustment mechanism (2) between the transverse welding mechanism (3), for adjusting the distance of the transverse welding mechanism (3) so that one end of the welding gun body (8) abuts the welding point; The circumferential welding mechanism (4) is on one side of the spacing adjustment mechanism (2), which is used for driving the welding gun body (8) to move circumferentially.

2. The multi-angle welding tool for welding a cylindrical shell of a petroleum separator according to claim 1, characterized in that, The supporting mechanism (1) comprises a bidirectional threaded rod (101), the two ends of the bidirectional threaded rod (101) are respectively threadedly connected with a first moving block (102), a plurality of traction plates (103) are arrayed and rotatably connected on the first moving block (102), the other ends of the plurality of traction plates (103) are respectively rotatably connected with a supporting block (104), the outer sides of the supporting blocks (104) are respectively fixedly connected with extrusion sensing blocks (105), one side of each of the plurality of supporting blocks (104) is fixedly connected with a first limiting plate (107), a limiting groove (115) is formed in the first limiting plate (107), both ends of the bidirectional threaded rod (101) are respectively rotatably connected with a storage bin (106), a limiting block (114) is fixedly connected inside the storage bin (106) corresponding to the limiting groove (115), and the limiting block (114) is movably sleeved inside the limiting groove (115).

3. The multi-angle welding tool for welding a cylindrical shell of an oil separator according to claim 2, characterized in that, Two said storage bins (106) are respectively fixedly connected with a fixed frame (109) on opposite sides, one end of the fixed frame (109) is rotatably connected with a bearing sleeve (108), the bearing sleeve (108) is fixedly connected with the bidirectional threaded rod (101), a movable slot is formed in one side of the storage bin (106) corresponding to the plurality of traction plates (103), the traction plates (103) are movably sleeved inside the movable slot, the supporting blocks (104) are movably sleeved inside the storage bin (106), and one side of the bidirectional threaded rod (101) is provided with a driving assembly.

4. The multi-angle welding tool for welding a cylindrical shell of an oil separator according to claim 3, characterized by The spacing adjusting mechanism (2) comprises a linkage sleeve (201) rotationally connected with a bidirectional threaded rod (101), two linkage plates (202) fixedly connected on the linkage sleeve (201), two fixed blocks (203) fixedly connected at two ends of the two linkage plates (202) respectively, lifting swing arms (204) rotationally connected on the fixed blocks (203) respectively, push blocks (205) rotationally connected at the other ends of the lifting swing arms (204), slide rods (206) slidably connected on the push blocks (205) respectively, the slide rods (206) movably sleeved in the push blocks (205), connecting plates (207) fixedly connected at two ends of the slide rods (206) respectively, limit springs (208) fixedly connected between one side of the push blocks (205) and the connecting plates (207), the slide rods (206) movably sleeved in the limit springs (208), and a hydraulic push rod motor (209) fixedly connected between the two fixed blocks (203).

5. The multi-angle welding tool for welding a cylindrical shell of an oil separator according to claim 4, characterized in that, The transverse welding mechanism (3) comprises a mounting frame (301) fixedly connected on one side of the connecting plate (207), a threaded rod (302) rotationally connected in the mounting frame (301), a second moving block (303) threadedly connected on the threaded rod (302), a balance rod (305) fixedly connected on one side of the second moving block (303), a second limit plate (304) fixedly connected on one side of the mounting frame (301), a moving groove formed in the second limit plate (304) corresponding to the balance rod (305), the balance rod (305) movably sleeved in the moving groove, and a clamping assembly (309) fixedly connected on the other side of the second moving block (303).

6. The multi-angle welding tool for welding a cylindrical shell of an oil separator according to claim 5, characterized by One end of the threaded rod (302) is fixedly connected with a driven gear (306), one side of the mounting frame (301) is fixedly connected with a motor frame, a first motor (307) is fixedly connected on the motor frame, an output end of the first motor (307) is fixedly connected with a first driving gear (308), one side of the first driving gear (308) is in meshing transmission with the driven gear (306), and one side of the mounting frame (301) is fixedly connected with an output end of the hydraulic push rod motor (209).

7. The multi-angle welding tool for welding a cylindrical shell of an oil separator according to claim 4, characterized by The circumferential welding mechanism (4) comprises a gear ring (404) fixedly connected on one side of the linkage sleeve (201), a balance frame (401) rotationally connected on one side of the linkage sleeve (201), a second motor (402) fixedly connected on the top of the balance frame (401), a second driving gear (403) fixedly connected with an output end of the second motor (402), and one side of the second driving gear (403) in meshing transmission with the gear ring (404).

8. The multi-angle welding tool for welding a cylindrical shell of an oil separator according to claim 7, characterized by The driving assembly comprises a driving motor (111) fixedly connected with the bottom of the balance frame (401), the output end of the driving motor (111) is fixedly connected with a second belt pulley (112), one side of the bidirectional threaded rod (101) is fixedly connected with a first belt pulley (110) corresponding to the second belt pulley (112), the first belt pulley (110) and the second belt pulley (112) are drivingly connected with the same belt (113) outside, the balance frame (401) is provided with a through hole corresponding to the belt (113), and the belt (113) is movably sleeved in the through hole.

9. The multi-angle welding tool for welding a cylindrical shell of an oil separator according to claim 7, characterized by The bottom of each of the two fixing frames (109) is fixedly connected with a supporting frame (5), the two supporting frames (5) are respectively fixedly connected with a moving control box (6) and an electric welding control box (7), the electric welding control box (7) is electrically connected with the welding gun body (8), the two sides of the two supporting frames (5) are respectively rotatably connected with moving wheels, the moving control box (6) is electrically connected with the moving wheels and the extrusion sensing block (105), and one side of the supporting frame (5) is fixedly connected with one end of the balance frame (401).

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