Large-diameter composite pipe welding device and welding method thereof

Abstract

The invention discloses a large-diameter composite pipe welding device and a welding method thereof, and relates to the technical field of pipe welding, the large-diameter composite pipe welding device comprises a base, a transmission mechanism used for transmitting a composite pipe is arranged on the base, and a fixing seat is fixedly connected to one side of the base; according to the welding device, the inner wall of the composite pipe can be supported through the arranged supporting mechanism, it is avoided that when the outer wall of the composite pipe is clamped, a large amount of space around the composite pipe is occupied, welding is conducted on the outer wall of the composite pipe, and welding is conducted on the outer wall of the composite pipe; therefore, the situation that the welding operation is inconvenient is avoided, and smooth external welding is ensured. The supporting mechanism is made of a light material, so that the self weight of the supporting mechanism is lower, the stress at the joint of the supporting mechanism and the transmission mechanism is reduced, and the device can operate more stably for a long time.

Description

Technical Field

[0001] The invention relates to the technical field of pipe welding, in particular to a large-diameter composite pipe welding device and a welding method thereof. Background Art

[0002] Large-diameter pipes are commonly used in various engineering projects. Large-diameter pipes can be used for pipe installation in water supply, drainage, and other systems. Therefore, large-diameter pipes with high sealing properties are required. In actual use, multiple large-diameter pipes need to be welded to meet actual engineering uses. The Chinese patent with application number "CN202211630052.8" provides a large-diameter Hastelloy steel pipe welding process. The application sets a clamping assembly to make the pipe contact with each other at the top of the support plate and the top of the push rod. The pipe presses the push rod downward by gravity. At the same time, the push rod drives the movable frame to move downward through the support rod and the profile plate, so that the two sets of clamping blocks are close to each other to clamp the pipe. The application clamps the outer wall of the pipe by the clamping assembly. When the clamping assembly clamps the pipe, a large amount of space around the pipe will be occupied, which is inconvenient for welding operations. Summary of the invention

[0003] The object of the present invention is to provide a large-diameter composite pipe welding device and a welding method thereof to solve the problems raised in the above-mentioned background technology.

[0004] In order to achieve the above-mentioned invention object, the present invention adopts the following technical scheme:

[0005] The present invention provides a large-diameter composite pipe welding device and a welding method thereof, comprising a base, the base being provided with a transmission mechanism for transmitting the composite pipe, a fixed seat being fixedly connected to one side of the base, a supporting mechanism extending to the inside of the composite pipe to support the inner wall thereof being fixedly connected to the fixed seat, and a welding gun for welding being mounted on the base.

[0006] Furthermore, the transmission mechanism includes an arc groove on the base, and a rolling ball is connected to an array ball in the arc groove. Two fixed frames are slidably connected to the position of the base near the arc groove through a linear transmission structure, and one of the fixed frames is fixedly connected to a first motor on a side close to the base, and the first motor passes through one end of the fixed frame and is fixedly connected to a first pulley, and the end of the fixed frame away from the first motor is rotatably connected to a rotating shaft, and the rotating shaft is located between the two fixed frames and a second pulley is fixedly mounted thereon, and a transmission belt is mounted between the first pulley and the second pulley, and both ends of the rotating shaft away from the second pulley are fixedly connected to drive wheels, and the drive wheel abuts against the outer wall of the composite tube.

[0007] Further, the supporting mechanism includes a cross bar fixedly connected to the fixed seat, the cross bar is fixedly connected to a first moving block at one end away from the fixed seat, the first moving block is provided with a first moving groove, a sliding block is slidably connected in the first moving groove, the sliding block is slidably connected to the support seat at one end away from the cross bar, a through opening is provided on one side of the support seat, a mounting seat is fixedly connected to the center position of the support seat, a sliding connection and a mounting shaft are passed through the mounting seat, and a sliding block is fixedly connected to the position of the mounting shaft at both ends of the mounting seat, at least three connecting rods are hinged in an array on the slider, and a support is hinged at the other end of each connecting rod, a spring is sleeved at a position of the mounting shaft near the through opening, one end of the spring abuts against the mounting seat, and the other end of the spring abuts against the inner wall of the support seat, a second moving groove is provided on the support seat at a position corresponding to the sliding block, the sliding block is located in the first moving groove, a second motor is fixedly connected to the side of the fixed seat away from the cross bar, a winding wheel is fixedly connected to the output end of the second motor, and a cable is wound on the winding wheel.

[0008] Furthermore, the support member includes a support rod hinged to the connecting rod, one end of the support rod is hinged to the mounting seat, the connecting rod is hinged at a position between the two ends of the support rod, the other end of each support rod is fixedly connected to a pressing block, a hydraulic cylinder is slidably connected to the pressing block, one end of the hydraulic cylinder is fixedly connected to a fixed block, a hydraulic rod is slidably connected to the fixed block, and the other end of the hydraulic rod is fixedly connected to a pushing block.

[0009] A welding method for a large-diameter composite pipe welding device, characterized in that it comprises the following steps:

[0010] S1. Place the composite pipe to be welded on the base;

[0011] S2, moving the composite pipe to be welded to the support mechanism, so that the support mechanism is located between the inner seams of the two composite pipes to be welded;

[0012] S3, supporting the inner wall of the composite pipe to be welded by a support rod in the support mechanism;

[0013] S4, the transmission mechanism is brought into contact with the outer wall of the composite pipe to be welded, so that the composite pipe to be welded is rotated, and the welding gun welds the joint of the composite pipe to be welded.

[0014] Compared with the prior art, one or more of the above technical solutions have the following beneficial effects:

[0015] The present invention can support the inner wall of the composite pipe by means of the support mechanism, so as to avoid occupying a large amount of space around the composite pipe when the outer wall of the composite pipe is clamped, causing inconvenience in welding operation, and ensure smooth external welding;

[0016] The support mechanism is made of lightweight materials, which reduces the deadweight of the support mechanism and the stress at the connection between the support mechanism and the transmission mechanism, so that the device can operate more stably for a long time;

[0017] The support member can support the inner wall of the composite pipe and apply a thrust along the axial direction of the composite pipe to the two composite pipes, so that the two composite pipes are in closer contact.

[0018] It is to be understood that the foregoing general description and the following detailed description are exemplary and explanatory only and are not restrictive of the invention. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] The accompanying drawings in the specification, which constitute a part of the present invention, are used to provide a further understanding of the present invention. The exemplary embodiments of the present invention and their descriptions are used to explain the present invention and do not constitute improper limitations on the present invention.

[0020] Figure 1 It is a schematic diagram of the overall structure of the present invention;

[0021] Figure 2 It is a structural schematic diagram of the transmission mechanism of the present invention;

[0022] Figure 3 It is a structural schematic diagram of the support mechanism of the present invention;

[0023] Figure 4 yes Figure 3 The enlarged view of point B in the middle;

[0024] Figure 5 is a side view of the support mechanism of the present invention;

[0025] Figure 6 yes Figure 5 Cross-sectional view at AA in the middle.

[0026] In the figure:

[0027] 1. Base; 2. Fixed seat; 3. Welding gun; 4. Arc groove; 5. Rolling ball; 6. Fixed frame; 7. First motor; 8. First pulley; 9. Rotating shaft; 10. Second pulley; 11. Transmission belt; 12. Driving wheel; 13. Crossbar; 14. First moving block; 15. First moving groove; 16. Sliding block; 17. Support seat; 18. Through hole; 19. Roller; 20. Second moving groove; 21. Sliding groove; 22. Second motor; 23. Winding wheel; 24. Cable; 25. Sliding shaft; 26. Rotating seat; 27. Support rod; 28. Spring; 29. ​​Pressing block; 30. Hydraulic cylinder; 31. Fixed block; 32. Hydraulic rod; 33. Pushing block

[0028] 1. Base; 2. Fixed seat; 3. Welding gun; 4. Arc groove; 5. Rolling ball; 6. Fixed frame; 7. First motor; 8. First pulley; 9. Rotating shaft; 10. Second pulley; 11. Transmission belt; 12. Driving wheel; 13. Cross bar; 14. First moving block; 15. First moving groove; 16. Sliding block; 17. Support seat; 18. Through port; 19. Mounting seat; 20. Mounting shaft; 21. Sliding block; 22. Connecting rod; 23. Spring; 24. Second moving groove; 25. Second motor; 26. Winding wheel; 27. Cable; 28. Support rod; 29. ​​Pressing block; 30. Hydraulic cylinder; 31. Fixed block; 32. Hydraulic rod; 33. Pushing block. DETAILED DESCRIPTION

[0029] In order to enable those skilled in the art to better understand the solution of the present application, the technical solution in the embodiments of the present application will be clearly and completely described below in conjunction with the drawings in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, not all of the embodiments. Based on the embodiments in the present application, all other embodiments obtained by ordinary technicians in this field without creative work should fall within the scope of protection of the present application.

[0030] See also Figures 1 to 6 , comprising a base 1, on which a transmission mechanism for transmitting the composite pipe is provided, a fixed seat 2 is fixedly connected to one side of the base 1, a supporting mechanism extending to the inside of the composite pipe to support the inner wall thereof is fixedly connected to the fixed seat 2, and a welding gun 3 for welding is mounted on the base 1.

[0031] The composite pipe is moved on the base 1 through the transmission mechanism, and the support mechanism is moved to the other end of the composite pipe, so that the support mechanism is located inside between the two composite pipes to be welded, so that the support rod 28 can support the inner wall of the composite pipe to be welded, avoiding occupying a large amount of space around the composite pipe when clamping the outer wall of the composite pipe, causing inconvenience in welding operation, ensuring smooth external welding, and the power of the support mechanism is located outside the composite pipe, so that the dead weight of the support mechanism is lower, reducing the stress at the connection between the support mechanism and the transmission mechanism, and making the device more stable for long-term operation.

[0032] See also Figure 1 and Figure 2The transmission mechanism includes an arc groove 4 on a base 1, and a rolling ball 5 is connected to an array ball in the arc groove 4. Two fixed frames 6 are slidably connected to the position of the base 1 near the arc groove 4 through a linear transmission structure, one of the fixed frames 6 is fixedly connected to a first motor 7 on a side close to the base 1, and the first motor 7 is fixedly connected to a first pulley 8 at one end that passes through the fixed frame 6, and a rotating shaft 9 is rotatably connected to the end of the fixed frame 6 away from the first motor 7, and the rotating shaft 9 is located between the two fixed frames 6 and a second pulley 10 is fixedly sleeved, and a transmission belt 11 is sleeved between the first pulley 8 and the second pulley 10, and both ends of the rotating shaft 9 away from the second pulley 10 are fixedly connected to drive wheels 12, and the drive wheel 12 abuts against the outer wall of the composite tube.

[0033] The composite pipe to be welded is placed on the base 1, and the rolling ball 5 is arranged so that the composite pipe can be pushed more easily, reducing the work intensity of pushing the composite pipe. When the composite pipe to be welded is moved into place, the fixed frame 6 is driven to move by the linear transmission structure, so that the two driving wheels 12 can respectively contact the composite pipe to be welded. The linear transmission structure in the prior art is quite mature (such as a screw slide), and no further elaboration is made here. The first motor 7 is started, and the first motor 7 drives the first pulley 8 to rotate. The first pulley 8 rotates and drives the second pulley 10 to rotate through the transmission belt 11. The second pulley 10 rotates and drives the rotating shaft 9 to rotate. The rotating shaft 9 rotates and drives the driving wheel 12 to rotate. The driving wheel 12 rotates and drives the composite pipe to rotate by contacting with the outer wall of the composite pipe, so that the welding gun 3 welds the composite pipe to be welded.

[0034] See also Figures 3 to 6The supporting mechanism includes a cross bar 13 fixedly connected to the fixed seat 2, and the end of the cross bar 13 away from the fixed seat 2 is fixedly connected to a first moving block 14, and a first moving groove 15 is provided on the first moving block 14, and a sliding block 16 is slidably connected in the first moving groove 15, and the end of the sliding block 16 away from the cross bar 13 is slidably connected to a support seat 17, and a through hole 18 is provided on one side of the support seat 17, and a mounting seat 19 is fixedly connected to the center position of the support seat 17, and a sliding connection and a mounting shaft 20 are passed through the mounting seat 19, and the mounting shaft 20 is located at both ends of the mounting seat 19. The position is fixedly connected with a slider 21, and the slider At least three connecting rods 22 are hingedly connected in an array on 21, and a support is hingedly connected to the other end of each connecting rod 22. A spring 23 is sleeved on the mounting shaft 20 near the through opening 18, and one end of the spring 23 abuts against the mounting seat 19, and the other end of the spring 23 abuts against the inner wall of the support seat 17. A second movable groove 24 is opened at a position corresponding to the sliding block 16 on the support seat 17, and the sliding block 16 is located in the first movable groove 15. A second motor 25 is fixedly connected to the side of the fixed seat 2 away from the cross bar 13, and a winding wheel 26 is fixedly connected to the output end of the second motor 25, and a cable 27 is wound on the winding wheel 26.

[0035] When the composite pipe to be welded is moved into place, the support members are respectively located inside the composite pipe to be welded, and then the second motor 25 is started, and the second motor 25 drives the winding wheel 26 to rotate, and the winding wheel 26 rotates to drive the cable 27 to reel in, and the cable 27 drives the installation shaft 20 to move through the through hole 18, and the moving rod of the installation shaft 20 drives the slider 21 to move, and the movement of the slider 21 drives the connecting rod 22 to rotate around the slider 21, so that the support member abuts against the inner wall of the composite pipe to be welded, and supports the inner wall of the composite pipe to be welded. In this supporting process, the support member may not be at the center position of the composite pipe, and the force on the cross bar 13 is relatively large, so that the cross bar 13 may Will be damaged, the support seat 17, the sliding block 16 and the first moving block 14 are set. When the support is in an eccentric position, the support contacts the inner wall of the composite pipe, and the support seat 17 will produce a corresponding movement, so that the sliding block 16 moves along the first moving groove 15 and the second moving groove 24, and the sliding block 16 is located in the second moving groove 24 opened by the support seat 17, so that the support seat 17 produces a corresponding movement, and at least three support rods 28 can be automatically centered during the movement, so that the support seat 17 can automatically align when the support supports the inner wall of the composite pipe, thereby making the support force of the support on the inner wall of the composite pipe more uniform.

[0036] See also Figures 4 to 6The support member includes a support rod 28 hinged to the connecting rod 22, one end of the support rod 28 is hinged to the mounting seat 19, the connecting rod 22 is hinged at a position between the two ends of the support rod 28, and the other end of each support rod 28 is fixedly connected to a pressing block 29, and a hydraulic cylinder 30 is slidably connected to the pressing block 29, one end of the hydraulic cylinder 30 is fixedly connected to a fixed block 31, and a hydraulic rod 32 is slidably connected to the fixed block 31, and the other end of the hydraulic rod 32 is fixedly connected to a pushing block 33.

[0037] When the cable 27 is reeled in, the cable 27 drives the installation shaft 20 to move, the moving rod of the installation shaft 20 drives the slider 21 to move, the movement of the slider 21 drives the connecting rod 22 to rotate around the slider 21, and the connecting rod 22 will push the support rod 28 during the rotation, so that the support rod 28 rotates around the mounting seat 19. In this process, the support rods 28 on both sides of the mounting seat 19 move toward the inner wall of the composite pipe, thereby over-supporting the inner wall of the composite pipe, the rotation of the support rod 28 drives the pressing block 29 to move toward the inner wall of the composite pipe, the movement of the pressing block 29 drives the hydraulic cylinder 30 to move, the movement of the hydraulic cylinder 30 drives the fixed block 31 to move, and the fixed block 31 moves The hydraulic rod 32 is driven to move, and the movement of the hydraulic rod 32 drives the push block 33 to move. The push block 33 contacts the inner wall of the composite pipe to support the composite pipe. The support rod 28 continues to move, and the support rod 28 drives the pressing block 29 to move. The movement of the pressing block 29 presses the hydraulic oil in the hydraulic cylinder 30, so that the hydraulic rod 32 moves along the axial direction of the composite pipe. The movement of the hydraulic rod 32 drives the push block 33 to move along the axial direction of the composite pipe, so that the two composite pipes can contact more closely. The length of the support rod 28 is set to be longer, which can adapt to composite pipes with larger diameters, and the component force of the support rod 28 in the axial direction of the composite pipe is relatively larger, so that the two composite pipes can contact more closely.

[0038] See also Figure 6 The hydraulic cylinder 30, the fixed block 31 and the hydraulic rod 32 are connected by an oil circuit, so that the fixed block 31 can move along the axial direction of the composite pipe under the movement of the pressing block 29, so that the two composite pipes can be in closer contact.

[0039] See also Figure 6 The push block 33 is driven by the hydraulic rod 32 to move in a directional manner on the hydraulic cylinder 30 and abut against the inner wall of the composite pipe in a timely manner. When abutting against the inner wall of the composite pipe, the push block 33 moves in a directional manner along the axial direction of the composite pipe so that the two composite pipes are in closer contact.

[0040] See also Figure 6The cable 27 is wound up to make the two support rods 28 on the same side move toward each other to support the inner wall of the composite pipe in time, so that the support rods 28 support the inner wall of the composite pipe, avoiding occupying a large amount of space around the composite pipe when clamping the outer wall of the composite pipe, causing inconvenience in welding operation, and ensuring smooth external welding.

[0041] The support seat 17 and the support rod 28 are both made of lightweight materials, which makes the weight of the support mechanism lighter, reduces the stress on the cross bar 13, and makes the device more stable.

[0042] See also Figure 3 and Figure 6 One end of the cable 27 passes through the through opening 18 and is fixedly connected to the installation shaft 20, so that the cable 27 can simultaneously drive the installation shaft 20 to move, thereby driving the support rod 28 to support the inner wall of the composite pipe through the arranged transmission structure.

[0043] A welding method for a large-diameter composite pipe welding device comprises the following steps:

[0044] S001, placing the composite pipe to be welded on the base 1;

[0045] S002, moving the composite pipes to be welded to the support mechanism, so that the support mechanism is located between the inner seams of the two composite pipes to be welded;

[0046] S003, supporting the inner wall of the composite pipe to be welded by the support rod 28 in the support mechanism;

[0047] S004, the transmission mechanism is brought into contact with the outer wall of the composite pipe to be welded, so that the composite pipe to be welded is rotated, and the welding gun 3 welds the joint of the composite pipe to be welded.

[0048] The above description is only a preferred specific implementation manner of the present invention, but the protection scope of the present invention is not limited thereto. Any technician familiar with the technical field can make equivalent replacements or changes according to the technical scheme and inventive concept of the present invention within the technical scope disclosed by the present invention, which should be covered by the protection scope of the present invention.

Claims

1. A large-diameter composite pipe welding device, characterized in that: The invention comprises a base (1), wherein the base (1) is provided with a transmission mechanism for transmitting a composite pipe, a fixed seat (2) is fixedly connected to one side of the base (1), a support mechanism extending into the interior of the composite pipe to support the inner wall thereof is fixedly connected to the fixed seat (2), and a welding gun (3) for welding is mounted on the base (1).

2. A large-diameter composite pipe welding device according to claim 1, characterized in that: The transmission mechanism comprises an arc groove (4) on a base (1), a rolling ball (5) is connected to an array ball in the arc groove (4), and two fixing frames (6) are slidably connected to the position of the base (1) near the arc groove (4) via a linear transmission structure.

3. A large-diameter composite pipe welding device according to claim 2, characterized in that: A first motor (7) is fixedly connected to one side of one of the fixing frames (6) close to the base (1); one end of the first motor (7) passing through the fixing frame (6) is fixedly connected to a first pulley (8); and one end of the fixing frame (6) away from the first motor (7) is rotatably connected to a rotating shaft (9).

4. A large-diameter composite pipe welding device according to claim 3, characterized in that: The rotating shaft (9) is located between the two fixed frames (6) and is sleeved with a fixed second pulley (10); a transmission belt (11) is sleeved between the first pulley (8) and the second pulley (10); both ends of the rotating shaft (9) away from the second pulley (10) are fixedly connected with a driving wheel (12); and the driving wheel (12) is in contact with the outer wall of the composite tube.

5. A large-diameter composite pipe welding device according to claim 1, characterized in that: The support mechanism comprises a cross bar (13) fixedly connected to a fixed seat (2); one end of the cross bar (13) away from the fixed seat (2) is fixedly connected to a first moving block (14); a first moving groove (15) is provided on the first moving block (14); a sliding block (16) is slidably connected in the first moving groove (15).

6. A large-diameter composite pipe welding device according to claim 1, characterized in that: The end of the sliding block (16) away from the cross bar (13) is slidably connected to a support seat (17), a through opening (18) is provided on one side of the support seat (17), a mounting seat (19) is fixedly connected at the center position of the support seat (17), a sliding connection and a mounting shaft (20) pass through the mounting seat (19), and the mounting shaft (20) is sleeved and fixedly connected with sliding blocks (21) at positions located at both ends of the mounting seat (19).

7. A large-diameter composite pipe welding device according to claim 1, characterized in that: At least three connecting rods (22) are hingedly arranged on the slider (21), and the other end of each connecting rod (22) is hingedly connected to a support member. A spring (23) is sleeved on the installation shaft (20) near the through opening (18), and one end of the spring (23) is in contact with the installation seat (19).

8. A large-diameter composite pipe welding device according to claim 1, characterized in that: The support member comprises a support rod (28) hinged to a connecting rod (22), one end of the support rod (28) is hinged to a mounting seat (19), the connecting rod (22) is hinged at a position between the two ends of the support rod (28), the other end of each support rod (28) is fixedly connected to a pressing block (29), a hydraulic cylinder (30) is slidably mounted on the pressing block (29), one end of the hydraulic cylinder (30) is fixedly connected to a fixing block (31), a hydraulic rod (32) is slidably connected to the fixing block (31), and the other end of the hydraulic rod (32) is fixedly connected to a pushing block (33).

9. A welding method for the large-diameter composite pipe welding device according to any one of claims 1 to 9, characterized in that: The following steps are involved: S1. placing the composite pipe to be welded on a base (1); S2, moving the composite pipe to be welded to the support mechanism, so that the support mechanism is located between the inner seams of the two composite pipes to be welded; S3, supporting the inner wall of the composite pipe to be welded by means of a support rod (28) in the support mechanism; S4, the transmission mechanism is brought into contact with the outer wall of the composite pipe to be welded, so that the composite pipe to be welded is rotated, and the welding gun (3) welds the joint of the composite pipe to be welded.

Images