Portable large-diameter pipe automatic welding tool gun trolley mechanism

Abstract

A portable large pipe diameter pipeline automatic welding tool gun car mechanism relates to pipeline welding technical field. In order to solve the movement control of the welding gun on the XY position of the pipeline welding device, the transverse movement motor drives the transverse movement driving gear, drives the transverse driven gear to rotate, drives the transverse screw nut to rotate, the screw rod is fixed and cannot rotate, and the transverse screw nut is reversely pushed to move, that is, the gun car frame can move back and forth along the gun car support; the lifting motor drives the lifting main driving gear to rotate, drives the lifting driven gear to rotate, drives the lifting screw rod to rotate, the lifting screw nut cannot rotate due to the track limiting of the lifting screw nut, thereby driving the lifting screw nut to move up and down along the lifting screw, and the lifting screw nut moves on the XY axis. The utility model is suitable for pipeline welding field.

Description

Technical Field

[0001] This utility model relates to the field of pipeline welding technology, specifically to a portable automatic welding tool for large-diameter pipelines using a welding gun mechanism. Background Technology

[0002] Pipelines are a crucial component of natural gas and oil transportation projects. Outdoor long-distance oil and gas pipelines typically have a diameter of about 1 meter and a single section length of about 10 meters. Pipeline construction requires welding individual pipe sections into a single, continuous structure to achieve long-distance energy transmission; therefore, welding is a major part of this project. Existing welding equipment clamps the pipes to be welded and then performs the welding operation using an automatic welding torch. However, the welding torch on common pipeline welding equipment is in a fixed position. When clamping two pipes to be welded, the weld joints of the two pipes need to be aligned with the welding torch. Due to the large outer diameter of the pipes, a crane is required for lifting and alignment, which is time-consuming and labor-intensive.

[0003] In summary, the position of the welding torch on existing pipe welding equipment is fixed. When clamping two pipes to be welded, the welding joints of the two pipes need to be aligned with the welding torch. This clamping method requires the use of a crane for hoisting and alignment, which is time-consuming and labor-intensive, resulting in low work efficiency. Utility Model Content

[0004] This invention addresses the problem that existing pipe welding devices have fixed welding torch positions, requiring the welding joints of two pipes to be welded to be aligned with the welding torch when clamping them. This clamping method necessitates the use of a crane for hoisting and alignment, which is time-consuming and labor-intensive, resulting in low work efficiency. Therefore, this invention proposes a portable automatic welding tool for large-diameter pipes using a torch carriage mechanism.

[0005] This utility model discloses a portable automatic welding tool for large-diameter pipes, comprising a gun carriage mechanism including a transverse motor 1, a lifting motor 2, a transverse drive gear 3, a transverse driven gear 4, a transverse lead screw-nut 5, a transverse lead screw-screw 6, a first bearing 7, a second bearing 8, a gun carriage frame 9, a lifting main drive gear 10, a lifting driven gear 11, a lifting lead screw-nut 12, a lifting lead screw-screw 13, a third bearing 14, a fourth bearing 15, a transverse motor sensor bracket 16, a transverse motor counting grating 17, a transverse motor photoelectric sensor 18, a lifting motor sensor bracket 19, a lifting motor counting grating 20, a lifting motor photoelectric sensor 21, a gun carriage limit block 23, and a gun carriage bracket 24.

[0006] The gun carriage frame 9 is installed inside the gun carriage bracket 24. A gun carriage limiting block 23 is provided at each end of the bottom surface of the gun carriage bracket 24. The gun carriage limiting block 23 is used to laterally clamp the outer wall of the gun carriage frame 9. A support plate is provided inside the gun carriage frame 9, and the support plate is integrally formed with the gun carriage frame 9. A transverse motor 1 is provided on the upper side of the support plate. The output shaft of the transverse motor 1 passes through the support plate and is fixedly connected to the center hole of the transverse drive gear 3. A through hole is machined at the center of the rear panel of the gun carriage frame 9 and the support plate. A first bearing 7 is embedded inside the through hole of the rear panel, and a second bearing 8 is embedded inside the through hole of the support plate. One end of the transverse lead screw-nut 5 is embedded in the inner hole of the first bearing 7, and the other end of the transverse lead screw-nut 5 is embedded in the inner hole of the second bearing 8. The interior of the transverse lead screw-nut 5 is connected to the transverse lead screw-screw 6. After passing through the support plate, one end of the transverse lead screw-nut 5 is fixedly connected to the center hole of the transverse driven gear 4. The transverse drive gear 3 meshes with the transverse driven gear 4. The transverse motor counting grating 17 and the transverse motor are connected. A photoelectric sensor 18 is fixedly mounted on a transverse motor sensor bracket 16, which is fixedly mounted on the gun carriage frame 9 at a position corresponding to the transverse motor 1. A lifting motor 2 is provided on the lower side of the support plate. The output shaft of the lifting motor 2 passes through the support plate and is fixedly connected to the center hole of the lifting main drive gear 10. A lifting screw-screw 13 is provided inside the other side of the gun carriage frame 9. The top end of the lifting screw-screw 13 is rotatably connected to an inner wall of the gun carriage frame 9 through a bearing 15. The bottom end of the lifting screw-screw 13... The lifting screw-screw 13 is rotatably connected to the other inner wall of the gun carriage frame 9 via the No. 3 bearing 14. The lifting screw-screw 13 is fixedly connected to the lifting driven gear 11, and the lifting driven gear 11 is meshed with the lifting main drive gear 10. The lifting screw-screw 13 is provided with a lifting screw-nut 12, and the lifting screw-nut 12 is provided with a welding gun. The lifting motor counting grating 20 and the lifting motor photoelectric sensor 21 are fixedly connected to the lifting motor sensor bracket 19. The lifting motor sensor bracket 19 and the lifting motor 2 are fixedly connected to the gun carriage frame 9 according to their relative positions.

[0007] Furthermore, two gun carriage limiting grooves 22 are respectively machined on both sides of the gun carriage frame 9, and the two gun carriage limiting grooves 22 are arranged in parallel and symmetrically.

[0008] Furthermore, the gun carriage limiting block 23 includes a limiting lock block 23-1, a gun carriage limiting pin 23-2, a lock block guide rail 23-3, and a pressure spring 23-4;

[0009] Two gun carriage limiting pins 23-2 are evenly provided along the length direction at the center of the upper surface of the limiting locking block 23-1. A through hole is provided at each end of the upper surface of the limiting locking block 23-1. A locking block guide rail 23-3 is provided inside each through hole. A pressure spring 23-4 is sleeved at the bottom end of the locking block guide rail 23-3. The locking block guide rail 23-3 is slidably connected to the limiting locking block 23-1.

[0010] Furthermore, the gun carriage limiting pin 23-2 on the gun carriage limiting block 23 is connected to the gun carriage limiting groove 22 on the gun carriage frame 9.

[0011] Furthermore, both the transverse motor 1 and the lifting motor 2 are fixed to the side end face of the support plate in the gun carriage frame 9 via motor mounts.

[0012] Furthermore, the output shaft of the transverse motor 1 is fixedly connected through the center hole of the transverse drive gear 3;

[0013] Furthermore, the output shaft of the lifting motor 2 is fixedly connected through the center hole of the lifting main drive gear 10;

[0014] Furthermore, during use, the transverse motor 1 drives the transverse drive gear 3 to rotate. Since the transverse drive gear 3 meshes with the transverse driven gear 4, it drives the transverse screw-nut 5 to rotate. Since the transverse screw is fixed to the outside and cannot rotate, it pushes the transverse screw-nut 5 to move in the opposite direction, that is, the gun carriage frame 9 can move back and forth along the gun carriage bracket 24.

[0015] The lifting motor 2 drives the lifting main drive gear 10 to rotate. Since the lifting main drive gear 10 meshes with the lifting driven gear 11, it drives the lifting screw-nut 13 to rotate. Because the lifting screw-nut cannot rotate within the track, it drives the lifting screw-nut 12 to move up and down along the lifting screw-nut 13, thus driving the welding torch on the lifting screw-nut 12 to move. The welding torch moves laterally with the torch carriage frame 9 and moves up and down with the lifting screw-nut 12. This, combined with the circumferential movement of the rotating tool holder on the portable large-diameter automatic welding tool, achieves three-dimensional control on the pipeline.

[0016] Compared with the prior art, the present invention has the following advantages:

[0017] This invention overcomes the shortcomings of existing technologies by using a transverse motor to drive a transverse drive gear. Since the transverse drive gear meshes with the transverse driven gear, it drives the transverse screw-nut to rotate. Because the transverse screw is fixed to the outside and cannot rotate, it pushes the transverse screw-nut in the opposite direction, allowing the gun carriage frame to move back and forth along the gun carriage support. This is further aided by a lifting motor that drives the lifting main drive gear. Since the lifting main drive gear meshes with the lifting driven gear, it drives the lifting screw-nut to rotate. Because the lifting screw-nut cannot rotate within the track, it drives the lifting screw-nut to move up and down along the lifting screw-nut, thus moving the welding torch on the lifting screw-nut. This allows the welding torch on the lifting screw-nut to move along the XY axes. After the pipes to be welded are clamped, the position of the welding torch can be adjusted using the transverse motor and the lifting motor to align the welding torch with the weld joint of the two pipes. Attached Figure Description

[0018] Figure 1 This is a main sectional view of the internal structure of the gun carriage frame in the portable large-diameter pipe automatic welding tool gun carriage mechanism described in this utility model;

[0019] Figure 2 This is a top view of the gun carriage mechanism for a portable large-diameter pipe automatic welding tool according to this utility model;

[0020] Figure 3 This is a side view of the gun carriage mechanism for a portable large-diameter pipe automatic welding tool according to this utility model;

[0021] Figure 4 This is a front sectional view of the gun carriage mechanism of a portable large-diameter pipe automatic welding tool according to this utility model;

[0022] Figure 5 This is a front view of the gun carriage limiting block in the gun carriage mechanism of a portable large-diameter pipe automatic welding tool according to this utility model. Detailed Implementation

[0023] Specific implementation method one: Combining Figures 1 to 4This embodiment describes a portable automatic welding tool for large-diameter pipes, comprising a gun carriage mechanism including a transverse motor 1, a lifting motor 2, a transverse drive gear 3, a transverse driven gear 4, a transverse lead screw-nut 5, a transverse lead screw-screw 6, a first bearing 7, a second bearing 8, a gun carriage frame 9, a lifting main drive gear 10, a lifting driven gear 11, a lifting lead screw-nut 12, a lifting lead screw-screw 13, a third bearing 14, a fourth bearing 15, a transverse motor sensor bracket 16, a transverse motor counting grating 17, a transverse motor photoelectric sensor 18, a lifting motor sensor bracket 19, a lifting motor counting grating 20, a lifting motor photoelectric sensor 21, a gun carriage limit block 23, and a gun carriage bracket 24.

[0024] The gun carriage frame 9 is installed inside the gun carriage bracket 24. A gun carriage limiting block 23 is provided at each end of the bottom surface of the gun carriage bracket 24. The gun carriage limiting block 23 is used to laterally clamp the outer wall of the gun carriage frame 9. A support plate is provided inside the gun carriage frame 9, and the support plate is integrally formed with the gun carriage frame 9. A transverse motor 1 is provided on the upper side of the support plate. The output shaft of the transverse motor 1 passes through the support plate and is fixedly connected to the center hole of the transverse drive gear 3. A through hole is machined at the center of the rear panel of the gun carriage frame 9 and the support plate. A first bearing 7 is embedded inside the through hole of the rear panel, and a second bearing 8 is embedded inside the through hole of the support plate. One end of the transverse lead screw-nut 5 is embedded in the inner hole of the first bearing 7, and the other end of the transverse lead screw-nut 5 is embedded in the inner hole of the second bearing 8. The interior of the transverse lead screw-nut 5 is connected to the transverse lead screw-screw 6. After passing through the support plate, one end of the transverse lead screw-nut 5 is fixedly connected to the center hole of the transverse driven gear 4. The transverse drive gear 3 meshes with the transverse driven gear 4. The transverse motor counting grating 17 and the transverse motor are connected. A photoelectric sensor 18 is fixedly mounted on a transverse motor sensor bracket 16, which is fixedly mounted on the gun carriage frame 9 at a position corresponding to the transverse motor 1. A lifting motor 2 is provided on the lower side of the support plate. The output shaft of the lifting motor 2 passes through the support plate and is fixedly connected to the center hole of the lifting main drive gear 10. A lifting screw-screw 13 is provided inside the other side of the gun carriage frame 9. The top end of the lifting screw-screw 13 is rotatably connected to an inner wall of the gun carriage frame 9 through a bearing 15. The bottom end of the lifting screw-screw 13... The lifting screw-screw 13 is rotatably connected to the other inner wall of the gun carriage frame 9 via the No. 3 bearing 14. The lifting screw-screw 13 is fixedly connected to the lifting driven gear 11, and the lifting driven gear 11 is meshed with the lifting main drive gear 10. The lifting screw-screw 13 is provided with a lifting screw-nut 12, and the lifting screw-nut 12 is provided with a welding gun. The lifting motor counting grating 20 and the lifting motor photoelectric sensor 21 are fixedly connected to the lifting motor sensor bracket 19. The lifting motor sensor bracket 19 and the lifting motor 2 are fixedly connected to the gun carriage frame 9 according to their relative positions.

[0025] In this specific embodiment, during use, the transverse motor 1 drives the transverse drive gear 3 to rotate. Since the transverse drive gear 3 meshes with the transverse driven gear 4, it drives the transverse screw-nut 5 to rotate. Since the transverse screw is fixed to the outside and cannot rotate, it pushes the transverse screw-nut 5 to move in the opposite direction, that is, the gun carriage frame 9 can move back and forth along the gun carriage bracket 24.

[0026] The lifting motor 2 drives the lifting main drive gear 10 to rotate. Since the lifting main drive gear 10 meshes with the lifting driven gear 11, it drives the lifting screw-nut 13 to rotate. Because the lifting screw-nut cannot rotate within the track, it drives the lifting screw-nut 12 to move up and down along the lifting screw-nut 13, thus driving the welding torch on the lifting screw-nut 12 to move. The welding torch moves laterally with the torch carriage frame 9 and moves up and down with the lifting screw-nut 12. This, combined with the circumferential movement of the rotating tool holder on the portable large-diameter automatic welding tool, achieves three-dimensional control on the pipeline.

[0027] Specific Implementation Method Two: Combining Figures 1 to 4 This embodiment further defines the gun carriage mechanism described in Specific Embodiment 1. The portable large-diameter pipe automatic welding tool gun carriage mechanism described in this embodiment has two gun carriage limiting grooves 22 machined on both sides of the gun carriage frame 9, and the two gun carriage limiting grooves 22 are arranged in parallel and symmetrically.

[0028] Specific implementation method three: Combining Figures 1 to 5 This embodiment is a further limitation of the gun carriage mechanism described in Specific Embodiment Two. The gun carriage mechanism for a portable large-diameter automatic pipe welding tool described in this embodiment includes a gun carriage limiting block 23, which includes a limiting lock block 23-1, a gun carriage limiting pin 23-2, a lock block guide rail 23-3, and a pressure spring 23-4.

[0029] Two gun carriage limiting pins 23-2 are evenly provided along the length direction at the center of the upper surface of the limiting locking block 23-1. A through hole is provided at each end of the upper surface of the limiting locking block 23-1. A locking block guide rail 23-3 is provided inside each through hole. A pressure spring 23-4 is sleeved at the bottom end of the locking block guide rail 23-3. The locking block guide rail 23-3 is slidably connected to the limiting locking block 23-1.

[0030] Specific implementation method four: Combination Figures 1 to 5 This embodiment is a further limitation of the gun carriage mechanism described in Specific Embodiment 3. In this embodiment, a portable large-diameter pipe automatic welding tool gun carriage mechanism is provided, wherein the gun carriage limiting pin 23-2 on the gun carriage limiting block 23 is connected to the gun carriage limiting groove 22 on the gun carriage frame 9.

[0031] In this specific embodiment, the gun carriage limiting pin 23-2 on the gun carriage limiting block 23 is connected with the gun carriage limiting groove 22 on the gun carriage frame 9 to achieve quick disassembly or assembly of the gun carriage frame 9 and the gun carriage bracket 24.

[0032] Specific Implementation Method Five: Combining Figures 1 to 4 This embodiment further defines the gun carriage mechanism described in Specific Embodiment 1. In this embodiment, the gun carriage mechanism for a portable large-diameter pipe automatic welding tool is described, wherein the transverse motor 1 and the lifting motor 2 are both fixed to the side end face of the support plate in the gun carriage frame 9 via motor mounts.

[0033] Specific Implementation Method Six: Combination Figures 1 to 4 This embodiment further defines the gun carriage mechanism described in Specific Embodiment Five. In this embodiment, a portable automatic welding tool for large-diameter pipes is provided, wherein the output shaft of the transverse motor 1 is fixedly connected through the center hole of the transverse drive gear 3.

[0034] Specific implementation method seven: Combination Figures 1 to 4 This embodiment further defines the gun carriage mechanism described in Specific Embodiment Five. In this embodiment, the output shaft of the lifting motor 2 is fixedly connected through the center hole of the lifting main drive gear 10 in a portable large-diameter pipe automatic welding tool.

[0035] Working principle

[0036] When in use, the transverse motor 1 drives the transverse drive gear 3 to rotate. Since the transverse drive gear 3 meshes with the transverse driven gear 4, it drives the transverse screw-nut 5 to rotate. Since the transverse screw is fixed to the outside and cannot rotate, it pushes the transverse screw-nut 5 to move in the opposite direction, that is, the gun carriage frame 9 can move back and forth along the gun carriage bracket 24.

[0037] The lifting motor 2 drives the lifting main drive gear 10 to rotate. Since the lifting main drive gear 10 meshes with the lifting driven gear 11, it drives the lifting screw-nut 13 to rotate. Because the lifting screw-nut cannot rotate within the track, it drives the lifting screw-nut 12 to move up and down along the lifting screw-nut 13, thus driving the welding torch on the lifting screw-nut 12 to move. The welding torch moves laterally with the torch carriage frame 9 and moves up and down with the lifting screw-nut 12. This, combined with the circumferential movement of the rotating tool holder on the portable large-diameter automatic welding tool, achieves three-dimensional control on the pipeline.

Claims

1. A gun carriage mechanism for a portable large pipe diameter pipe automatic welding tool, characterized by: It includes a transverse motor (1), a lifting motor (2), a transverse drive gear (3), a transverse driven gear (4), a transverse lead screw-nut (5), a transverse lead screw-screw (6), a bearing No. 1 (7), a bearing No. 2 (8), a gun carriage frame (9), a lifting main drive gear (10), a lifting driven gear (11), a lifting lead screw-nut (12), a lifting lead screw-screw (13), a bearing No. 3 (14), a bearing No. 4 (15), a transverse motor sensor bracket (16), a transverse motor counting grating (17), a transverse motor photoelectric sensor (18), a lifting motor sensor bracket (19), a lifting motor counting grating (20), a lifting motor photoelectric sensor (21), a gun carriage limit block (23), and a gun carriage bracket (24). The gun carriage frame (9) is installed inside the gun carriage bracket (24). A gun carriage limiting block (23) is provided at each end of the bottom surface of the gun carriage bracket (24). The gun carriage limiting block (23) is used to laterally clamp the outer wall of the gun carriage frame (9). The gun carriage frame (9) is provided with a support plate inside, and the support plate is integrally set with the gun carriage frame (9). A transverse motor (1) is provided on the upper side of the support plate. After the output shaft of the transverse motor (1) passes through the support plate, it is fixedly connected to the center hole of the transverse drive gear (3). A through hole is machined at the center of the rear panel of the gun carriage frame (9) and the support plate. The rear of the gun carriage frame (9) A first bearing (7) is embedded inside the through hole of the plate, and a second bearing (8) is embedded inside the through hole of the support plate. One end of the transverse lead screw-nut (5) is embedded in the inner hole of the first bearing (7), and the other end of the transverse lead screw-nut (5) is embedded in the inner hole of the second bearing (8). The interior of the transverse lead screw-nut (5) is connected to the transverse lead screw-screw (6). After one end of the transverse lead screw-nut (5) passes through the support plate, it is fixedly connected to the center hole of the transverse driven gear (4). The transverse drive gear (3) meshes with the transverse driven gear (4). The transverse motor counting grating (17) and the transverse motor photoelectric sensor are connected. The sensor (18) is fixedly mounted on the transverse motor sensor bracket (16), and the transverse motor sensor bracket (16) is fixedly mounted on the gun carriage frame (9) at the corresponding position of the transverse motor (1); a lifting motor (2) is provided on the lower side of the support plate, and the output shaft of the lifting motor (2) passes through the support plate and is fixedly connected to the center hole of the lifting main drive gear (10). A lifting screw-screw (13) is provided inside the other side of the gun carriage frame (9). The top end of the lifting screw-screw (13) is rotatably connected to an inner wall of the gun carriage frame (9) through a bearing (15), and the bottom end of the lifting screw-screw (13) is connected through a bearing (15). The bearing (14) is rotatably connected to the other inner wall of the gun carriage frame (9). The lifting screw-screw (13) is fixedly connected to the lifting driven gear (11), and the lifting driven gear (11) is meshed with the lifting main drive gear (10). The lifting screw-screw (13) is provided with a lifting screw-nut (12), and the lifting screw-nut (12) is provided with a welding gun. The lifting motor counting grating (20) and the lifting motor photoelectric sensor (21) are fixedly connected to the lifting motor sensor bracket (19). The lifting motor sensor bracket (19) and the lifting motor (2) are fixedly connected to the gun carriage frame (9) according to their relative positions.

2. A gun carriage mechanism for a portable large pipe diameter pipe automatic welding tool according to claim 1, characterized in that: The gun carriage frame (9) has two gun carriage limiting grooves (22) machined on both sides, and the two gun carriage limiting grooves (22) are arranged in parallel and symmetrically.

3. A gun carriage mechanism for a portable large pipe diameter pipe automatic welding tool according to claim 2, characterized in that: The gun carriage limiting block (23) includes a limiting lock block (23-1), a gun carriage limiting pin (23-2), a lock block guide rail (23-3), and a pressure spring (23-4). Two gun carriage limiting pins (23-2) are evenly provided along the length direction at the center of the upper surface of the limiting locking block (23-1). A through hole is provided at each end of the upper surface of the limiting locking block (23-1). A locking block guide rail (23-3) is provided inside each through hole. A pressure spring (23-4) is sleeved at the bottom end of the locking block guide rail (23-3). The locking block guide rail (23-3) is slidably connected to the limiting locking block (23-1).

4. A gun carriage mechanism for a portable large pipe diameter pipe automatic welding tool according to claim 3, characterized in that: The gun carriage limiting pin (23-2) on the gun carriage limiting block (23) is connected to the gun carriage limiting groove (22) on the gun carriage frame (9).

5. A gun carriage mechanism for a portable large pipe diameter pipe automatic welding tool according to claim 1, characterized in that: The traverse motor (1) and the lifting motor (2) are both fixed to the side end face of the support plate in the gun carriage frame (9) by motor mounts.

6. A gun carriage mechanism for a portable large pipe diameter pipe automatic welding tool according to claim 5, characterized in that: The output shaft of the transverse motor (1) is fixedly connected through the center hole of the transverse drive gear (3).

7. A gun carriage mechanism for a portable large pipe diameter pipe automatic welding tool according to claim 5, characterized in that: The output shaft of the lifting motor (2) is fixedly connected through the center hole of the lifting main drive gear (10).

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