Butt joint device for pipeline welding

Abstract

The present invention discloses a docking device for pipe welding, comprising a bracket, a docking seat, and an internal clamp. The docking seat comprises a mounting plate, the upper portion of the mounting plate being connected to the bracket via a hydraulic cylinder, inner tie rods being symmetrically hinged on both sides of the lower portion of the mounting plate, and the inner clamp being hinged to the lower ends of the inner tie rods. The inner clamp comprises a hanging plate hinged to the lower ends of the inner tie rods, two connecting rods being hinged on each side of the hanging plate, a clamping arm being hinged on the lower ends of the connecting rods, and a supporting roller being provided at the lower ends of the clamping arms. A connecting plate is hinged between the clamping arms on both sides, and a pressure roller is provided at the lower end of the connecting plate. A first adjusting screw is rotatably connected to the pressure roller frame, and guide rods are provided on both sides of the pressure roller frame, the upper ends of the guide rods sequentially passing through the connecting plate and the hanging plate. The present invention utilizes the internal clamp to clamp the pipes on both sides, and utilizes the inner tie rods in an "eight" structure to automatically dock the pipes on both sides, thereby ensuring the effect of pipe docking and thus the quality of pipe welding.

Description

Technical Field

[0001] The invention belongs to pipeline welding tooling, and in particular relates to a butt joint device used for pipeline welding. Background Art

[0002] When using pipelines, multiple pipes need to be welded according to the installation requirements. When connecting and welding the pipes together, the quality of the pipe joint is crucial. When welding pipes with smaller diameters, the conventional method is basically to align the joint pipes on a temporary operating platform on the ground and then weld them. Large-diameter pipes need to be assembled and fixed before welding. Due to the lack of suitable fixing devices on the operating platform, it is difficult to align the pipe ends during positioning welding. The pipe ends are easily staggered with each other, resulting in misalignment defects, which reduces the effective thickness of the weld and causes welding stress concentration, making the welding strength of the pipeline unable to meet the process requirements. If the pipeline is not forcibly fixed during welding, tensile stress often occurs when spot welding the first weld point, causing the pipeline to bend and affecting the subsequent welding process. Summary of the Invention

[0003] The purpose of the present invention is to overcome the deficiencies in the prior art and provide a butt joint device for pipe welding to solve the problem that the pipe ends are difficult to align during pipe butt welding, resulting in poor pipe butt welding forming quality and welding strength that is difficult to meet process requirements.

[0004] In order to achieve the above object, the technical solution adopted by the present invention is:

[0005] Material toggling mechanism, its both sides respectively have a cylinder pressure, and the cylinder pressure bar connects swing arm, and the swing arm end face has hook portion, and a bar passes position between the end of two swing arms and the hook portion.

[0006] As a further preferred embodiment of the present technical solution, a spring is provided at the lower portion of the mounting plate, and both ends of the spring are fixedly connected to end plates, which are hinged to the inner side of the inner pull rod, and the inner pull rods on both sides are in an eight-shaped structure in the initial state.

[0007] As a further preferred embodiment of the present technical solution, a first sleeve is slidably connected to the crossbeam of the bracket, a fastening bolt is threadedly connected to one side of the first sleeve, the end of the fastening bolt is against the crossbeam of the bracket, a sliding seat is fixedly connected between the first sleeves on both sides, and the piston rod of the hydraulic cylinder is fixedly connected to the sliding seat.

[0008] As a further preferred embodiment of the present technical solution, the lower parts of both sides of the hanging plate are fixedly connected to the limiting guide sleeves, and the guide rods are installed with gaps inside the limiting guide sleeves.

[0009] As a further preferred embodiment of the present technical solution, a support arm is connected to each side of the mounting plate, at least one external pull rod is hinged to the lower part of the support arm, and the external pull rods on both sides are arranged in an eight-shaped shape, and the lower end of the external pull rod is hinged to an external clamp, and the external clamp has the same structure as the internal clamp.

[0010] As a further preferred embodiment of the present technical solution, a second sliding sleeve is slidably connected to the support arm, a second adjusting screw is threadedly connected to the second sliding sleeve, and both ends of the second adjusting screw are connected to the support arm through a fixed plate; the external pull rod includes two threaded sleeves, the upper threaded sleeve is hinged to the second sliding sleeve, and the lower threaded sleeve is hinged to the external clamp, a stud is threadedly connected between the two threaded sleeves, and the rotation directions of the two ends of the stud are opposite.

[0011] As a further preferred embodiment of the present technical solution, one side of the pressure wheel of the inner clamp is connected to a drive motor, and the drive motors of the inner clamps on both sides rotate synchronously.

[0012] As a further preferred embodiment of the present technical solution, the supporting wheel and the pressure wheel are both provided with a plurality of anti-slip grooves.

[0013] As a further optimization of the present technical solution, an anti-slip component is provided on one side of the supporting wheel, and the anti-slip component includes a connecting base plate fixedly connected to the clamping arm, a connecting seat is fixedly connected to one side of the base plate, and one side of the connecting seat is an inclined surface, and a guide rail is fixedly connected to the inclined surface; a wheel frame is provided on one side of the connecting seat, and the supporting wheel is installed on one side of the wheel frame, and the other side of the wheel frame is also an inclined surface, and a guide groove cooperating with the guide rail is provided on the inclined surface; when the inner clamp and the outer clamp initially clamp the pipe, the wheel frame is located at the bottom end of the connecting seat; and limiting plates are connected on both sides of the connecting base plate.

[0014] As a further preferred embodiment of the present technical solution, a rotating assembly is provided on the mounting plate, and the rotating assembly includes a shell fixedly mounted on the mounting plate, a rotating shaft is provided inside the shell, a worm gear is rotatably connected to the rotating shaft, a worm is engaged with one side of the worm gear, one end of the worm gear extends out of the shell and is connected to a handwheel, a turntable is provided on the upper part of the worm gear, and the turntable is fixedly connected to the support arm.

[0015] The beneficial effects of the present invention are:

[0016] 1) The present invention utilizes an inner clamp to clamp the pipes on both sides, and utilizes an inner pull rod in an eight-shaped structure to automatically connect the pipes on both sides, thereby ensuring the effect of pipe connection and thus ensuring the quality of pipe welding.

[0017] 2) By arranging springs between the inner pull rods on both sides, the inner pull rods on both sides are in an eight-shaped structure in the initial state, thereby avoiding manual separation of the inner clamps on both sides and reducing the labor intensity of the operators.

[0018] 3) By arranging a sliding seat on the bracket, the docking position of the pipeline can be adjusted, which is convenient for adjusting the docking position of the pipeline according to the position of the welding gun.

[0019] 4) Support arms are provided on both sides of the mounting plate, a second sliding sleeve is slidably provided on the support arms, an outer pull rod is hinged at the lower end of the second sliding sleeve, and an outer clamp is hinged at the lower end of the outer pull rod. The outer clamp and the inner clamp are used to support the pipeline, avoiding the need to locate the center of the pipeline when only the inner clamp is used to clamp the pipeline, improving the stability of the clamping when the pipeline is docked, and the outer clamp with an eight-shaped structure has a secondary squeezing effect on the pipeline, ensuring the quality of the pipeline docking.

[0020] 5) A drive motor is set on one side of the pressure wheel of the inner clamp, and the drive motors of the inner clamps on both sides rotate synchronously. The drive motor drives the pipeline to rotate during welding, avoiding manual rotation of the pipeline. The drive motor ensures that the pipeline rotates at a uniform speed, thereby ensuring the quality of pipeline rotation welding.

[0021] 6) An anti-slip component is provided on one side of the supporting roller. When the pipeline and the supporting roller slide, the supporting roller frame slides from the bottom end of the connecting seat to the top end of the connecting seat, thereby increasing the clamping force of the two supporting rollers and the pressure roller on the pipeline, thereby preventing the pipeline from sliding laterally; limiting plates are connected on both sides of the connecting base to prevent the wheel frame from falling off the connecting seat.

[0022] 7) A swivel assembly is provided on the mounting plate to adjust the rotation angle between the support arm and the mounting plate, thereby adjusting the pipes on both sides when docking to ensure the accuracy of the docking of the pipes on both sides. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] Attachment Figure 1 The diagram is a structural diagram of a butt joint device for pipeline welding according to the present invention.

[0024] Attachment Figure 2 The figure is a schematic diagram of a support structure in a butt joint device for pipe welding according to the present invention.

[0025] Attachment Figure 3 The present invention is a schematic diagram of the assembly of an inner clamp and an outer clamp in a butt joint device for pipe welding.

[0026] Attachment Figure 4The figure is a schematic diagram of the structure of an inner clamp in a butt joint device for pipe welding according to the present invention.

[0027] Attachment Figure 5 The figure is a schematic structural diagram of an anti-slip component in a butt joint device for pipeline welding according to the present invention.

[0028] Attachment Figure 6 The present invention is a schematic diagram of the connection between the inner and outer clamps of a butt joint device for pipeline welding.

[0029] Attachment Figure 7 It is a schematic diagram of the support arm structure of a butt joint device for pipeline welding according to the present invention.

[0030] Attachment Figure 8 The diagram is a structural diagram of a rotary assembly in a butt joint device for pipe welding according to the present invention.

[0031] In the figure: 1. bracket; 101. slide; 102. first slide; 103. fastening bolt; 2. docking seat; 201. mounting plate; 202. inner pull rod; 203. spring; 204. end plate; 205. hydraulic cylinder; 3. inner clamp; 301. hanging plate; 302. connecting rod; 303. clamping arm; 304. connecting plate; 305. supporting roller; 3051. anti-slip groove; 306. pressure roller; 307. first adjusting screw; 308. knob; 309. drive motor; 310. guide rod; 311. limit guide sleeve ; 4. Anti-slip assembly; 401. Connecting base plate; 402. Connecting seat; 403. Guide rail; 404. Wheel frame; 405. Guide groove; 406. Limiting plate; 5. Support arm; 501. Fixed plate; 502. Second adjusting screw; 503. Second sliding sleeve; 504. External pull rod; 5041. Threaded sleeve; 5042. Double-headed stud; 505. External clamp; 6. Rotating assembly; 601. Housing; 602. Rotating shaft; 603. Worm gear; 604. Turntable; 605. Worm; 606. Handwheel; 7. Pipeline. DETAILED DESCRIPTION

[0032] The following is combined with Figure 1-8 The technical solutions in the embodiments of the present invention are clearly and completely described. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of them. All other embodiments derived by persons of ordinary skill in the art based on the embodiments of the present invention without inventive effort are within the scope of protection of the present invention.

[0033] In the description of the present invention, it should be understood that the terms "longitudinal", "transverse", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", etc., indicating the orientation or position relationship, are based on the orientation or position relationship shown in the accompanying drawings, and are only for the convenience of describing the present invention, rather than indicating or implying that the device or element referred to must have a specific orientation, specific orientation structure and operation, and therefore cannot be understood as a limitation on the present invention.

[0034] like Figure 1-4 As shown, a butt joint device for pipe welding comprises a bracket 1, a butt joint seat 2 and an inner clamp 3. The bracket 1 is provided with legs at the four corners for supporting the butt joint device. Figure 3 As shown, the docking seat 2 includes a mounting plate 201, the upper portion of the mounting plate 201 is connected to the bracket 1 through a hydraulic cylinder 205, and the lower portion of the mounting plate 201 is symmetrically hinged with inner pull rods 202 on both sides, and the inner clamp 3 is hinged to the lower end of the inner pull rod 202; Figure 4 As shown, the inner clamp 3 includes a hanging plate 301 hinged to the lower end of the inner pull rod 202, two connecting rods 302 are hinged on each side of the hanging plate 301, and a clamping arm 303 is hinged on the lower end of each connecting rod 302, and the two clamping arms 303 on the same side are hinged in an X shape, and a supporting wheel 305 is provided at the lower end of the clamping arm 303; a connecting plate 304 is hinged between the clamping arms 303 on both sides, and a pressure wheel 306 is provided at the lower part of the connecting plate 304. 7 is placed between the supporting wheel 305 and the pressing wheel 306, and the pressing wheel 306 is used to fix the pipe 7 on the inner clamp 3; a first adjusting screw 307 is rotatably connected to the pressing wheel 306 frame, and the first adjusting screw 307 is threadedly connected to the connecting plate 304. A knob 308 is provided at the upper end of the first adjusting screw 307, and guide rods 310 are provided on both sides of the pressing wheel 306 frame, and the upper ends of the guide rods 310 pass through the connecting plate 304 and the hanging plate 301 in sequence.

[0035] like Figure 3 As shown, a spring 203 is provided at the lower part of the mounting plate 201, and both ends of the spring 203 are fixedly connected with end plates 204. The end plates 204 are hinged to the inner side of the inner pull rod 202. The spring 203 makes the inner pull rods 202 on both sides form an eight-shaped structure in the initial state, avoiding manual separation of the inner clamps 3 on both sides and reducing the labor intensity of the operators.

[0036] like Figure 2 As shown, a first sleeve 102 is slidably connected to the crossbeam of the bracket 1, and a fastening bolt 103 is threadedly connected to one side of the first sleeve 102. The end of the fastening bolt 103 is against the crossbeam of the bracket 1, and a slide 101 is fixedly connected between the first sleeves 102 on both sides. The piston rod of the hydraulic cylinder 205 is fixedly connected to the slide 101; the slide 101 is used to adjust the position of the joint of the pipeline 7 to adapt to the position of the welding gun.

[0037] like Figure 4 As shown, the lower parts of both sides of the hanger plate 301 are fixedly connected with limiting guide sleeves 311, and the guide rod 310 is installed in the limiting guide sleeves 311 with gaps. The limiting guide sleeves 311 can not only guide the guide rod 310, but also limit the descending distance of the hanger plate 301, thereby avoiding collision between the hanger plate 301 and the knob 308.

[0038] like Figure 3 As shown, there is a support arm 5 connected to each side of the mounting plate 201, and at least one outer pull rod 504 is hinged at the lower part of the support arm 5, and the outer pull rods 504 on both sides are arranged in an eight-shaped shape, and the lower end of the outer pull rod 504 is hinged with an outer clamp 505, and the outer clamp 505 has the same structure as the inner clamp 3. The outer clamp 505 cooperates with the inner clamp 3 to support the pipe 7, thereby ensuring the stability of the clamping when the pipe 7 is docked.

[0039] like Figure 3 、 Figure 7 As shown, the support arm 5 is slidably connected to a second sleeve 503, and the second adjusting screw 502 is threadedly connected to the second sleeve 503, and both ends of the second adjusting screw 502 are connected to the support arm 5 through a fixed plate 501; the outer pull rod 504 includes two threaded sleeves 5041, the upper threaded sleeve 5041 is hinged to the second sleeve 503, and the lower threaded sleeve 5041 is hinged to the outer clamp 505, and a stud 5042 is threadedly connected between the two threaded sleeves 5041, and the rotation directions of the two ends of the stud 5042 are opposite; the sliding second sleeve 503 and the retractable outer pull rod 504 facilitate adjustment of the angle between the outer pull rods 504 on both sides, thereby adjusting the pressure of the outer pull rods 504 on both sides when centering the pipeline 7, thereby ensuring the welding quality of the pipeline 7.

[0040] like Figure 4 As shown, a drive motor 309 is connected to one side of the pressure wheel 306 of the inner clamp 3, and the drive motors 309 of the inner clamps 3 on both sides rotate synchronously. The drive motor 309 drives the pipe 7 to rotate during welding, avoiding manual rotation of the pipe 7, and the drive motor 309 ensures that the pipe 7 rotates at a uniform speed, thereby ensuring the quality of the rotation welding of the pipe 7.

[0041] like Figure 5 As shown, the supporting wheel 305 and the pressing wheel 306 are both provided with a plurality of anti-slip grooves 3051 to prevent the inner clamp 3 and the outer clamp 505 from slipping when docking the pipe 7 .

[0042] The side of the supporting wheel 305 is provided with an anti-skid component 4, such as Figure 5As shown, the anti-slip assembly 4 includes a connecting base 401 fixedly connected to the clamp arm 303, a connecting seat 402 fixedly connected to one side of the base, and a sloped surface on one side of the connecting seat 402, on which a guide rail 403 is fixedly connected; a wheel frame 404 is provided on one side of the connecting seat 402, and a supporting wheel 305 is mounted on one side of the wheel frame 404, and the other side of the wheel frame 404 is also a sloped surface, on which a guide groove 405 is provided that cooperates with the guide rail 403; the inner clamp 3 and the outer clamp 3 are fixedly connected to the connecting base 402, and the connecting seat 402 is fixedly connected to the guide rail 403; When the clamp 505 initially clamps the pipe 7, the wheel frame 404 is located at the bottom end of the connecting seat 402. When the pipe 7 and the supporting roller 305 slide, the supporting roller 305 frame slides from the bottom end of the connecting seat 402 to the top end of the connecting seat 402, thereby increasing the clamping force of the two supporting rollers 305 and the pressure roller 306 on the pipe 7, thereby preventing the pipe 7 from sliding horizontally; the limiting plates 406 are connected on both sides of the connecting base 401 to prevent the wheel frame 404 from falling off the connecting seat 402.

[0043] The mounting plate 201 is provided with a rotary assembly 6, such as Figure 8 As shown, the rotary assembly 6 includes a housing 601 fixedly mounted on the mounting plate 201, a rotating shaft 602 is provided inside the housing 601, a worm gear 603 is rotatably connected to the rotating shaft 602, a worm 605 is engaged with one side of the worm gear 603, one end of the worm gear 605 extends out of the housing 601 and is connected to a handwheel 606, a turntable 604 is provided on the upper part of the worm gear 603, and the turntable 604 is fixedly connected to the support arm 5; the rotary assembly 6 is used to adjust the rotation angle between the support arm 5 and the mounting plate 201, so as to adjust the pipes 7 on both sides when docking, so as to ensure the docking accuracy of the pipes 7 on both sides.

[0044] When butt welding pipes, move the two pipes 7 to the lower part of the bracket 1, and align the butt joint of the two pipes 7 with the position of the welding gun. Then use the hydraulic cylinder 205 to control the butt joint seat 2 to descend, so that the inner clamp 3 and the outer clamp 505 are clamped into the pipe 7. Then rotate the knob 308 to make the supporting wheel 305 and the pressure wheel 306 completely clamp the pipe 7. At this time, the inner pull rod 202 and the outer pull rod 504 are in an eight-shaped structure. Then control the butt joint seat 2 to rise and lift the pipes 7 on both sides. At this time, since the inner pull rod 202 and the outer pull rod 504 are in an eight-shaped structure, The inner pull rod 202 and the outer pull rod 504 are arranged in an eight-shaped pattern, pushing the pipes 7 on both sides toward the middle, so that the welding points of the pipes 7 on both sides are closely close. The degree of closeness can be adjusted by rotating the second adjusting screw 502 and the double-headed stud 5042 to adjust the angle of the outer pull rods 504 on both sides; at the same time, the rotation component 6 can be used to adjust the support arm 5 and the deflection angle of the outer pull rod 504 and the mounting plate 201 according to the offset of the two pipes 7 when docking, so that the pipes 7 on both sides are accurately docked, thereby ensuring the quality of the butt welding of the pipes 7.

[0045] The above content is merely an example and explanation of the structure of the present invention. Those skilled in the art may make various modifications or additions to the described specific embodiments or replace them in a similar manner. As long as they do not deviate from the structure of the invention or exceed the scope defined by the claims, they should all fall within the scope of protection of the present invention.

Claims

1. A butt joint device for pipe welding, comprising a bracket, a butt joint seat and an inner clamp, wherein the bracket is provided with legs at the four corners, characterized in that: The lockheedling cam of the present invention is connected with the hinge of the two wheels, and the lockheedling cam of the two wheels is connected with the hinge of the two wheels. The end is fixedly connected with an end plate, which is hinged to the inner side of the inner pull rod, and the inner pull rods on both sides are in an eight-shaped structure in the initial state; a support arm is connected to each side of the mounting plate, and at least one outer pull rod is hinged to the lower part of the support arm, and the outer pull rods on both sides are arranged in an eight-shaped structure, and the lower end of the outer pull rod is hinged with an outer clamp, and the outer clamp has the same structure as the inner clamp; one side of the supporting wheel is provided with an anti-slip component, and the anti-slip component includes a connecting base plate fixedly connected to the clamping arm, one side of the base plate is fixedly connected to a connecting seat, and one side of the connecting seat is an inclined surface, and a guide rail is fixedly connected to the inclined surface; one side of the connecting seat is provided with a wheel frame, and the supporting wheel is installed on one side of the wheel frame, and the other side of the wheel frame is also an inclined surface, and a guide groove cooperating with the guide rail is provided on the inclined surface; when the inner clamp and the outer clamp initially clamp the pipe, the wheel frame is located at the bottom end of the connecting seat; limiting plates are connected on both sides of the connecting base plate.

2. A butt joint device for pipeline welding according to claim 1, characterized in that: A first sliding sleeve is slidably connected to the crossbeam of the bracket, a fastening bolt is threadedly connected to one side of the first sliding sleeve, the end of the fastening bolt is against the crossbeam of the bracket, a sliding seat is fixedly connected between the first sliding sleeves on both sides, and the piston rod of the hydraulic cylinder is fixedly connected to the sliding seat.

3. The butt joint device for pipeline welding according to claim 1, characterized in that: The lower parts of both sides of the hanging plate are fixedly connected to the limiting guide sleeves, and the guide rods are installed in the limiting guide sleeves with gaps.

4. A butt joint device for pipeline welding according to claim 1, characterized in that: The support arm is slidably connected to a second sliding sleeve, and a second adjusting screw is threadedly connected to the second sliding sleeve. Both ends of the second adjusting screw are connected to the support arm through a fixed plate; the external pull rod includes two threaded sleeves, the upper threaded sleeve is hinged to the second sliding sleeve, and the lower threaded sleeve is hinged to the external clamp, and a stud is threadedly connected between the two threaded sleeves, and the rotation directions of the two ends of the stud are opposite.

5. The butt joint device for pipeline welding according to claim 1, characterized in that: One side of the pressure wheel of the inner clamp is connected to a driving motor, and the driving motors of the inner clamps on both sides rotate synchronously.

6. The butt joint device for pipeline welding according to claim 1, characterized in that: The supporting wheel and the pressing wheel are both provided with a plurality of anti-slip grooves.

7. The butt joint device for pipeline welding according to claim 1, characterized in that: A rotary assembly is provided on the mounting plate, and the rotary assembly includes a shell fixedly mounted on the mounting plate, a rotating shaft is provided inside the shell, a worm gear is rotatably connected to the rotating shaft, a worm is engaged with one side of the worm gear, one end of the worm gear extends out of the shell and is connected to a handwheel, a turntable is provided on the upper part of the worm gear, and the turntable is fixedly connected to the support arm.

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