A pipeline automatic welding propulsion device

Abstract

The utility model belongs to the technical field of pipeline welding, and particularly relates to a pipeline automatic welding propulsion device. A pipeline automatic welding propulsion device includes an automatic welding trolley and a welding machine and a welding gun arranged on the automatic welding trolley, a horizontal rotating assembly is fixedly connected to the upper end face of the automatic welding trolley, a longitudinal linear module is vertically fixedly connected to the rotating part of the horizontal rotating assembly, a transverse linear module is horizontally fixedly connected to the sliding part of the longitudinal linear module, a welding gun bracket is fixedly connected to the sliding part of the transverse linear module, the welding gun is detachably fixedly connected to the welding gun bracket, and a controller controls and electrically connects the automatic welding trolley, the welding machine, the horizontal rotating assembly, the longitudinal linear module and the transverse linear module. The utility model has a simple structure and can realize the adjustment of the welding gun in the longitudinal, transverse and horizontal directions to perform automated and high-precision welding of various straight seams.

Description

Technical Field

[0001] The utility model belongs to the technical field of pipeline welding, and in particular relates to a pipeline automatic welding propulsion device. Background Art

[0002] In order to improve welding efficiency and quality, automatic welding technology is often used. For example, when performing straight seam welding on pipelines, an automatic welding track trolley is often used, that is, a welding machine and welding gun are installed on the track trolley, and the track is arranged along the length of the pipeline so that the automatic welding track trolley moves along the track to push the welding gun to complete the straight seam welding of the pipeline. Existing automatic welding track trolleys generally have automatic swing and height adjustment functions, and rarely have automatic horizontal angle adjustment. Therefore, when encountering Figure 5 When welding the cone with straight seams, the track trolley needs to be adjusted to be parallel to the straight seams; Figure 6 When welding short pipes (such as tees and crosses) on the outer circumference of a pipeline, sometimes the straight seams of the upper and lower pipes of the short pipes have a certain angle. The existing automatic welding trolley cannot be adaptively adjusted according to the angle of the straight seam, thus failing to meet the requirements of automatic welding.

[0003] The Chinese utility model patent with application number 202223491721.6 discloses a pipeline automatic welding support, including two support frames and a screw transmission mechanism, wherein the upper end faces of the sliders of the two screw transmission mechanisms are respectively fixedly connected with a first adjustment block and a second adjustment block; a rotation hole is provided on the upper end face of the first adjustment block, and a rotation column is vertically fixedly connected to the upper end face of the second adjustment block; one end of the automatic welding trolley track is inserted into the rotation hole through a rotation rod vertically fixedly connected to its lower end face and can rotate with the rotation rod as an axis, and the other end of the automatic welding trolley track is sleeved on the rotation column through a slide slot through hole provided on its upper end face, and when the automatic welding trolley track rotates with the rotation rod as an axis, the rotation column slides in the slide slot through hole. The utility model can adjust the horizontal angle of the automatic welding trolley and has low cost.

[0004] Although the above patented technology can realize the angle adjustment of the welding gun in the horizontal direction, its structure occupies a large area during actual welding, the support frame is not easy to place and adjust, and the angle adjustment accuracy of the welding gun in the horizontal direction is low, thus failing to meet the requirements of automation and high-quality automated welding.

[0005] Therefore, it is urgent to design an automatic pipeline welding propulsion device, in which the welding gun is driven by the automatic welding track trolley along the straight seam direction, and the welding gun can be adjusted in the longitudinal, transverse and horizontal directions, so as to promote the welding gun to be adaptively adjusted according to various straight seam pipelines to improve the welding accuracy and automation level. Utility Model Content

[0006] In order to solve the technical problems existing in the prior art, the present application provides a pipeline automatic welding propulsion device, which has a simple structure and can push the welding gun along the straight seam while realizing the adjustment of the welding gun in the longitudinal, transverse and horizontal directions to achieve automated and high-precision welding of various straight seams.

[0007] In order to achieve the above purpose, the utility model provides the following technical solutions:

[0008] A pipeline automatic welding propulsion device comprises an automatic welding trolley and a welding machine and a welding gun arranged on the automatic welding trolley, wherein a horizontal rotating assembly is fixedly connected to the upper end face of the automatic welding trolley, a longitudinal linear module is vertically fixedly connected to the rotating part of the horizontal rotating assembly, a transverse linear module is horizontally fixedly connected to the sliding part of the longitudinal linear module, a welding gun bracket is fixedly connected to the sliding part of the transverse linear module, the welding gun is detachably fixedly connected to the welding gun bracket, and a controller controls and electrically connects the automatic welding trolley, the welding machine, the horizontal rotating assembly, the longitudinal linear module and the transverse linear module.

[0009] Preferably, the horizontal rotation assembly includes a servo motor, a reducer and a rotary drive assembly, the output shaft of the servo motor is connected to the input shaft of the reducer, the output shaft of the reducer drives the outer ring of the rotary drive assembly to rotate through a worm structure, a support plate is fixedly connected to the upper end face of the outer ring of the rotary drive assembly, and the longitudinal linear module is fixedly connected to the support plate.

[0010] Preferably, a fixed plate is fixedly connected to the sliding member of the horizontal linear module, the welding gun bracket is rotatably connected to the fixed plate, an arc-shaped waist-shaped hole is opened on the welding gun bracket, an adjustment bolt is passed through the arc-shaped waist-shaped hole and threadedly connected to the fixed plate, and when the welding gun bracket rotates, the adjustment bolt can slide relative to the arc-shaped waist-shaped hole.

[0011] Preferably, the welding gun bracket comprises a connecting plate rotatably connected to the fixing plate and a mounting plate arranged perpendicular to the connecting plate, and the welding gun is detachably fixedly embedded in the mounting plate.

[0012] Preferably, the fastening bolt is threadedly connected in the mounting plate and abuts against the welding gun to fix the welding gun in the mounting plate.

[0013] Preferably, the fixing plate is rotatably connected to the fixing plate via a rotating shaft, and the arc-shaped waist-shaped hole is opened on a side of the rotating shaft away from the mounting plate.

[0014] Preferably, an angle sensor is fixedly connected to the upper end surface of the automatic welding carriage on the inner side of the inner ring of the rotary drive assembly, and the rotating part of the angle sensor is fixedly connected to the support plate.

[0015] Compared with the prior art, the beneficial effects of the utility model are:

[0016] The utility model can realize lateral adjustment of the welding gun by setting a lateral linear module; can realize longitudinal adjustment of the welding gun by setting a longitudinal linear module; can realize angle adjustment of the welding gun in the horizontal direction by setting a horizontal rotating component, so that the welding gun head is always aligned with the weld at a certain angle to improve the welding quality; by setting a horizontal rotating component including a servo motor, a reducer and a rotary drive component, the structure is simple and the automatic horizontal angle adjustment of the welding gun is convenient; in addition, the welding gun bracket can be rotated relative to the fixed plate to adjust the angle of the welding gun on the longitudinal plane. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 It is a schematic diagram of the overall structure of the utility model.

[0018] Figure 2 It is a schematic diagram of the connection structure between the automatic welding carriage and the horizontal rotating assembly of the utility model.

[0019] Figure 3 It is a schematic diagram of the connection structure of the horizontal linear module, the vertical linear module, the welding gun bracket and the welding gun of the utility model.

[0020] Figure 4 It is a schematic diagram of the connection structure between the fixing plate and the welding gun bracket of the utility model.

[0021] Figure 5 It is a schematic diagram of the structure of the utility model when welding a tapered cylinder straight seam.

[0022] Figure 6 The utility model is a schematic diagram of the structure when welding a short pipe of a pipeline.

[0023] In the figure: 1. automatic pipeline welding propulsion device, 11. automatic welding trolley, 111. trolley top plate, 112. roller, 113. drive motor, 12. welding machine, 13. welding gun, 14. horizontal rotation assembly, 141. rotary drive assembly, 1411. inner ring, 1412. outer ring, 1413. shell, 1414. reducer, 1415. servo motor, 1416. support plate, 15. longitudinal linear module, 16. transverse linear module, 161. fixing plate, 17. welding gun bracket, 171. rotating shaft, 172. connecting plate, 1721. arc waist hole, 173. mounting plate, 1731. mounting through hole, 174. adjusting bolt, 175. fastening bolt, 18. angle sensor, 2. tapered cylinder, 3. pipeline short pipe. DETAILED DESCRIPTION

[0024] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of them. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0025] In the description of the present invention, it should be understood that the terms "upper", "lower", "front", "back", "left", "right", "top", "bottom", "inside", "outside", etc., indicating directions or positional relationships, are based on the directions or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific direction, be constructed and operated in a specific direction, and therefore should not be understood as a limitation on the present invention.

[0026] Example

[0027] See also Figures 1 to 4 As shown, a pipeline automatic welding propulsion device 1 includes an automatic welding trolley 11 and a welding machine 12 and a welding gun 13 arranged on the automatic welding trolley 11. The structures of the automatic welding trolley 11, the welding machine 12 and the welding gun 13 can select the existing technology. For example, the automatic welding trolley 11 includes a trolley top plate 111, a roller 112 arranged at the lower end of the trolley top plate 111 and a driving motor 113 for driving the roller 112 to rotate. The welding machine 12 can be fixedly mounted on the upper end surface of the trolley top plate 111 by bolts.

[0028] A horizontal rotating assembly 14 is provided on the upper end surface of the trolley roof 111 on one side of the welding machine 12, a longitudinal linear module 15 is vertically fixedly connected to the rotating part of the horizontal rotating assembly 14, a transverse linear module 16 is horizontally fixedly connected to the sliding part of the longitudinal linear module 15, a welding gun bracket 17 is fixedly connected to the sliding part of the transverse linear module 16, the welding gun 13 is detachably fixedly connected to the welding gun bracket 17, and a controller (not shown in the figure) controls and electrically connects the automatic welding trolley 11, the welding machine 12, the horizontal rotating assembly 14, the longitudinal linear module 15 and the transverse linear module 16.

[0029] In this embodiment, the “longitudinal” refers to a direction perpendicular to the trolley roof panel 111 (the trolley roof panel 111 is in a horizontal direction), and the “transverse” refers to a direction parallel to the upper end surface of the trolley roof panel 111 and perpendicular to the “longitudinal” direction.

[0030] Specifically, in this embodiment, the horizontal rotation assembly 14 includes a rotary drive assembly 141, and the rotary drive assembly 141 can be selected from existing screw-driven rotary drive assemblies, that is, the rotary drive assembly 141 includes an inner ring 1411 fixedly mounted on the upper end surface of the trolley roof 111 by bolts, an outer ring 1412 rotatably sleeved on the outer circumference of the inner ring 1411 by balls, and a housing 1413 fixedly mounted on the trolley roof 111 outside the outer ring 1412, teeth are provided on the outer circumference of the outer ring 1412, and a worm (not shown in the figure) is rotatably connected in the housing 1413, and the worm is meshed with the outer ring 1412, and drives the outer ring 1412 to rotate when the screw rotates. The worm is fixedly connected to the output shaft of the reducer 1414 fixedly mounted on the upper end surface of the trolley roof 111 through a coupling, and the output shaft of the servo motor 1415 is fixedly connected to the output shaft of the reducer 1414 through a coupling. Therefore, through the above structure, when the servo motor 1415 rotates forward or reversely, it can drive the worm and the outer ring 1412 to rotate in sequence, and then drive the welding gun 13 to adjust the angle in the horizontal direction.

[0031] In order to facilitate the installation of the longitudinal linear module 15 on the outer ring 1412, a support plate 1416 is fixedly installed on the upper end surface of the outer ring 1412 by bolts, and the longitudinal linear module 15 is fixedly connected to the support plate 1416 by bolts.

[0032] In order to simplify the structure and improve the precision of the welding gun when moving in the longitudinal and transverse directions, in this embodiment, the longitudinal linear module 15 and the transverse linear module 16 are both linear modules with existing screw drive structures.

[0033] Furthermore, in order to facilitate the adjustment of the deflection angle of the welding gun 13 on the longitudinal plane, in this embodiment, a fixing plate 161 is fixedly connected to the sliding member of the horizontal linear module 16 by bolts. The welding gun bracket 17 includes a connecting plate 172 rotatably connected to the fixing plate 161 through a rotating shaft 171, and a mounting plate 173 arranged perpendicular to the connecting plate 172. An arc-shaped waist-shaped hole 1721 is provided on the connecting plate 172. The arc-shaped waist-shaped hole 1721 is arranged with the axis of the rotating shaft 171. The adjustment bolt 174 is penetrated in the arc-shaped waist-shaped hole 1721 and is threadedly connected in the fixing plate 161. When the welding gun bracket 17 rotates, the adjustment bolt 174 can slide relative to the arc-shaped waist-shaped hole 1721. In addition, the arc-shaped waist-shaped hole 1721 is provided on the side of the rotating shaft 171 away from the mounting plate 173, so that the operator can loosen or tighten the adjustment bolt 174 to adjust the angle of the welding gun 13.

[0034] Furthermore, a mounting through hole 1731 is opened on the mounting plate 173 , and the welding gun 13 is detachably inserted into the mounting through hole 1731 . The fastening bolt 175 is threadedly connected in the mounting plate 173 and pressed against the welding gun 13 to fix the welding gun 13 in the mounting plate 173 .

[0035] Furthermore, in this embodiment, in order to monitor the rotation angle of the welding gun 13 in the horizontal direction in real time, the upper end surface of the trolley roof 111 inside the inner ring 1411 of the rotary drive assembly 141 is fixedly connected with the base of the angle sensor 18 by bolts, and the rotating part of the angle sensor 18 is fixedly embedded in the support plate 1416. The angle sensor 18 can use the existing technology, that is, when the outer ring 1412 of the rotary drive assembly 141 drives the support plate 1416 to rotate, the support plate 1416 will drive the rotating part of the angle sensor 18 to rotate, so as to obtain the rotation angle of the welding gun 13 in the horizontal direction through the rotation angle of the rotating part.

[0036] The working process of the embodiment of the utility model is as follows:

[0037] See also Figure 5 , 6 As shown in the figure, when welding the straight seam of the conical cylinder 2 or the pipeline short pipe 3, the conical cylinder 2 and the pipeline short pipe 3 are fixedly placed, the track is placed on one side of the conical cylinder 2 or the pipeline short pipe 3, and the automatic welding trolley 11 of the pipeline automatic welding propulsion device 1 is placed on the track so that it can propel the welding gun 13 along the track; the controller controls the longitudinal linear module 15 and the transverse linear module 16 to adjust the longitudinal and transverse positions of the welding gun 13, and the operator can rotate the welding gun bracket 17 after loosening the adjustment bolt 174 to adjust the longitudinal and transverse positions of the welding gun 13. The controller controls the automatic welding carriage 11 to move along the track direction and weld the straight seam. During the welding process of the conical cylinder 2, the controller can control the transverse linear module 16 to drive the welding gun 13 to move in the transverse direction to adapt to the slope of the weld of the conical cylinder 2. During the welding process of the pipeline short pipe 3, the controller can control the transverse linear module 16 and the servo motor 1415 to move the welding gun 13 in the transverse direction and adjust the angle in the horizontal direction, so that the welding gun 13 is aligned with the straight seam at a specific angle to improve the welding quality.

[0038] It should be noted that, in this embodiment, the controller can use an existing PLC controller and its control and electrical connection drive motor 113, welding machine 12, welding gun 13, servo motor 1415, longitudinal linear module 15, transverse linear module 16 and angle sensor 18, and its control principle and circuit connection relationship are existing technologies, with the purpose of improving welding automation, as long as it can meet the above welding process, this specification will not repeat it. In addition, before welding the straight seams of the conical cylinder 2 and the pipeline short pipe 3, the pipeline automatic welding propulsion device 1 can be used to simulate welding to obtain the best motion trajectory of the welding gun 13 suitable for welding, so as to obtain the control parameters of the controller for the drive motor 113, welding machine 12, welding gun 13, servo motor 1415, longitudinal linear module 15, transverse linear module 16 and angle sensor 18 during the welding process.

[0039] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A pipeline automatic welding propulsion device, comprising an automatic welding trolley and a welding machine and a welding gun arranged on the automatic welding trolley, characterized in that: A horizontal rotating assembly is fixedly connected to the upper end surface of the automatic welding carriage, a longitudinal linear module is vertically fixedly connected to the rotating part of the horizontal rotating assembly, a transverse linear module is horizontally fixedly connected to the sliding part of the longitudinal linear module, a welding gun bracket is fixedly connected to the sliding part of the transverse linear module, the welding gun is detachably fixedly connected to the welding gun bracket, and a controller controls and electrically connects the automatic welding carriage, welding machine, horizontal rotating assembly, longitudinal linear module and transverse linear module.

2. According to claim 1, a pipeline automatic welding propulsion device is characterized in that: The horizontal rotation component includes a servo motor, a reducer and a rotary drive component. The output shaft of the servo motor is connected to the input shaft of the reducer. The output shaft of the reducer drives the outer ring of the rotary drive component to rotate through a worm structure. A support plate is fixedly connected to the upper end surface of the outer ring of the rotary drive component, and the longitudinal linear module is fixedly connected to the support plate.

3. According to claim 1, a pipeline automatic welding propulsion device is characterized in that: A fixing plate is fixedly connected to the sliding member of the horizontal linear module, and the welding gun bracket is rotatably connected to the fixing plate. An arc-shaped waist-shaped hole is opened on the welding gun bracket, and an adjustment bolt is passed through the arc-shaped waist-shaped hole and threadedly connected to the fixing plate. When the welding gun bracket rotates, the adjustment bolt can slide relative to the arc-shaped waist-shaped hole.

4. According to claim 3, a pipeline automatic welding propulsion device is characterized in that: The welding gun bracket comprises a connecting plate rotatably connected to a fixing plate and a mounting plate arranged perpendicular to the connecting plate, and the welding gun is detachably fixed and embedded in the mounting plate.

5. According to claim 4, a pipeline automatic welding propulsion device is characterized in that: The fastening bolt is threadedly connected in the mounting plate and abuts against the welding gun to fix the welding gun in the mounting plate.

6. The pipeline automatic welding propulsion device according to claim 4, characterized in that: The connecting plate is rotatably connected to the fixing plate via a rotating shaft, and the arc-shaped waist-shaped hole is arranged on a side of the rotating shaft away from the mounting plate.

7. The pipeline automatic welding propulsion device according to claim 2, characterized in that: An angle sensor is fixedly connected to the upper end surface of the automatic welding carriage inside the inner ring of the rotary drive assembly, and the rotating part of the angle sensor is fixedly connected to the support plate.

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