CN-121004402-B - Pipeline welding support positioning device for municipal administration and welding method

CN121004402BCN 121004402 BCN121004402 BCN 121004402BCN-121004402-B

Abstract

The invention discloses a municipal pipeline welding supporting and positioning device and a welding method, and relates to the technical field of pipeline welding. The municipal pipeline welding, supporting and positioning device comprises a traveling module and an expansion module, wherein the expansion module comprises a central cross rod, a movable cross plate, a first electromagnetic supporting block and a second electromagnetic supporting block, a concave gap is arranged between the first electromagnetic supporting block and the second electromagnetic supporting block, and the first electromagnetic supporting block can axially move along the central cross rod so as to drive the first annular end face and the second annular end face to be close to each other and attached to each other. The outer ring weld joint is located the indent clearance middle part, and first electromagnetic supporting shoe and second electromagnetic supporting shoe are located the both sides of outer ring weld joint respectively promptly, can avoid the outer ring weld joint to bond the problem of first electromagnetic supporting shoe/second electromagnetic supporting shoe when the welding is worn, and then make expansion structure and pipeline can smoothly disengage, and then make expansion structure can smoothly shrink and travel to next operation node.

Inventors

SUN KAI
YE HUA
ZHENG MAOSEN
ZHANG LEI
LIU CHUANG
LI YANKE
CHEN XUXU
ZHONG MENGFEI

Assignees

中交二公局(山东)建设有限公司

Dates

Publication Date: 20260505
Application Date: 20250902

Claims (10)

1. The municipal pipeline welding, supporting and positioning device is characterized by comprising a traveling module (1) and an expansion module (2) arranged at the end part of the traveling module (1); The expansion module (2) comprises a central cross rod (21), a movable cross plate (22), a first electromagnetic supporting block (23) and a second electromagnetic supporting block (24), wherein the movable cross plate (22) is arranged on the periphery of the central cross rod (21), the distance between the movable cross plate (22) and the central cross rod (21) can be adjusted, the surface, away from the central cross rod (21), of the movable cross plate (22) is a mounting surface, the first electromagnetic supporting block (23) is arranged at the end position, away from the travelling module (1), of the mounting surface, and the second electromagnetic supporting block (24) is arranged at the end position, close to the travelling module (1), of the mounting surface; The expansion module (2) can expand until the first electromagnetic supporting block (23) abuts against and pushes the inner wall of the pipeline (4) which is being installed and the second electromagnetic supporting block (24) abuts against the inner wall of the pipeline (3) which is being constructed, so that the first annular end face (31) of the pipeline (4) which is being installed and the second annular end face (41) of the pipeline (3) which is being constructed are coaxially arranged; A concave gap (230) is arranged between the first electromagnetic supporting block (23) and the second electromagnetic supporting block (24), and an outer circumferential weld (30) is arranged in the middle of the concave gap (230) to avoid adhesion of the first electromagnetic supporting block (23) and/or the second electromagnetic supporting block (24); The first electromagnetic supporting block (23) can magnetically adsorb the inner wall of the pipeline (4) being installed, the second electromagnetic supporting block (24) can magnetically adsorb the inner wall of the pipeline (3) with the construction completed, and the first electromagnetic supporting block (23) can axially move along the central transverse rod (21) so as to drive the first annular end face (31) and the second annular end face (41) to be close to each other and attached to each other.
2. The welding, supporting and positioning device for municipal pipelines according to claim 1, wherein a first connecting block (231) is arranged between the first electromagnetic supporting block (23) and the movable transverse plate (22), and a second connecting block (241) is arranged between the second electromagnetic supporting block (24) and the movable transverse plate (22).
3. The municipal pipeline welding support positioning device according to claim 2, wherein the expansion module (2) further comprises a diagonal brace connecting rod (25) and a first linear driver (26), one end of the diagonal brace connecting rod (25) is rotatably connected with the central transverse rod (21) and the other end of the diagonal brace connecting rod is rotatably connected with the movable transverse plate (22), and one end of the first linear driver (26) is rotatably connected with the central transverse rod (21) and the other end of the diagonal brace connecting rod is rotatably connected with the movable transverse plate (22).
4. The welding, supporting and positioning device for municipal pipelines according to claim 3, wherein the movable transverse plate (22) is arranged in parallel with the central transverse rod (21), and the movable transverse plate (22), the central transverse rod (21) and the diagonal brace connecting rod (25) form a parallelogram structure.
5. The welding, supporting and positioning device for municipal pipes according to claim 4, wherein the vertical distance between the first electromagnetic supporting block (23) and the central cross rod (21) is equal to the vertical distance between the second electromagnetic supporting block (24) and the central cross rod (21), a first distance sensor (2312) is arranged beside the first connecting block (231), a second distance sensor (2412) is arranged beside the second connecting block (241), and the first, second and second distance sensors (231, 2412) are arranged in a linear array along the axial direction of the central cross rod (21), and the vertical distance between the first and second distance sensors (2312 ) and the central cross rod (21) is equal to the vertical distance between the second and third distance sensors (2412 ).
6. The municipal pipeline welding supporting and positioning device according to claim 5, wherein a first fan (5) is arranged at the end part of the travelling module (1) close to the expansion module (2), the first fan (5) can blow to form a rotational flow (51), the rotational flow (51) is discharged through an inner cavity of the pipeline (4) which is being installed, and the rotational flow (51) can obliquely flow through the inner concave gap (230) and cool the outer ring welding seam (30), the first electromagnetic supporting block (23) and the second electromagnetic supporting block (24); the traveling module (1) comprises a supporting main body (11), wherein an air channel (110) is arranged in the supporting main body (11), the air channel (110) comprises an air inlet and an air outlet, the air outlet is positioned at one side of the first fan (5) far away from the expansion module (2), the central cross rod (21) is of a hollow structure, the air inlet is communicated with one end of an inner cavity of the central cross rod (21), the end of the central cross rod (21) far away from the traveling module (1) is connected and communicated with the air inlet pipe (7), and the air inlet pipe (7) is used for injecting external cooling air into the air channel (110) and compensating the air pressure of the inner cavity of a constructed pipeline (3); The end of the air inlet pipe (7) is arranged in the pipeline (4) which is being installed.
7. The welding, supporting and positioning device for municipal pipelines according to claim 6, wherein the end part of the first connecting block (231) is connected with a bottom plate (233), the bottom plate (233) is connected with the movable cross plate (22) through a sliding rail assembly (234), and a first telescopic sheath (2344) and a second telescopic sheath (2346) are sleeved on the periphery of the sliding rail assembly (234); the folds of the first telescopic sheath (2344) are obliquely arranged, and the inclination angle is adapted to the inclination angle of the axis of the first fan (5); The folds of the second telescopic sheath (2346) are obliquely arranged, and the inclination angle is matched with the inclination angle of the axis of the first fan (5).
8. The municipal pipeline welding, supporting and positioning device according to claim 7, wherein the traveling module (1) further comprises supporting legs (12), a moving wheel (13) and a blocking plate (14), the supporting legs (12) are radially arranged on the outer surface of the supporting body (11), the end portion, far away from the supporting body (11), of the supporting legs (12) is connected with the moving wheel (13), the blocking plate (14) is arranged between the adjacent supporting legs (12), and a first motor for driving the moving wheel (13) to rotate is arranged in the supporting body (11).
9. The welding, supporting and positioning device for municipal pipelines according to claim 8, wherein a line concentration box is arranged in the supporting main body (11), a first wire is arranged at the bottom of the outer surface of the central cross rod (21), one end of the first wire is connected with the line concentration box, and the other end of the first wire is detachably connected with an external wire.
10. A method for welding municipal pipes, wherein the method for welding the pipes (4) being installed and the pipes (3) being constructed are aligned and welded by using the pipe welding support positioning device for municipal pipes according to claim 9, comprising the steps of: S1, disconnecting the first wire from the external wire, and then drawing the external wire away; S2, hoisting and placing the pipeline (4) which is being installed on a cushion block (61) of a foundation (6); S3, extending the external lead into the inner cavity of the pipeline (4) which is being installed and connecting the external lead with the first lead; S4, the expansion module (2) is contracted, and then the travelling module (1) travels in the direction approaching to the pipeline (4) which is being installed until the first annular end surface (31) and the second annular end surface (41) are sleeved on the periphery of the expansion module (2); S5, expanding the expansion module (2) to enable the first annular end face (31) and the second annular end face (41) to be coaxially arranged; S6, the first electromagnetic supporting block (23) is adsorbed on the inner wall of the pipeline (4) which is being installed, the second electromagnetic supporting block (24) is adsorbed on the inner wall of the pipeline (3) which is completed in construction, and then the first electromagnetic supporting block (23) moves towards the direction close to the second electromagnetic supporting block (24) so that the first annular end face (31) and the second annular end face (41) are mutually attached; S7, extending the air inlet pipe (7) into the pipeline (4) which is being installed and connecting and communicating with the central cross rod (21); s8, welding the outer wall of the joint position of the pipeline (4) which is being installed and the pipeline (3) which is subjected to construction to obtain the outer ring welding seam (30); s9, starting the first fan (5) to form a rotational flow (51), and simultaneously conveying the cooling gas to the initial end position of the rotational flow (51) through the air inlet pipe (7) so as to cool the outer ring welding seam (30).

Description

Pipeline welding support positioning device for municipal administration and welding method Technical Field The invention relates to the technical field of pipeline welding, in particular to a pipeline welding supporting and positioning device for municipal administration and a welding method. Background Municipal pipelines are mostly pipelines for water delivery, and the pipelines comprise concrete pipelines and metal pipelines. The adjacent metal pipes are commonly connected and sealed by welding. Prior to welding, adjacent metal pipes need to be aligned with each other to improve weld quality. The internal bracing type pipeline alignment technology has higher operability, and does not occupy the outer surface space of the pipeline, thereby being convenient for welding the outer surface of the pipeline and obtaining continuous welding seams. The Chinese patent 'a workpiece welding positioning tool' (publication number: CN 120502959A) discloses a technical scheme of aligning pipelines through an abutting roller type expansion structure, but two ends of the same abutting roller are required to be respectively abutted on the inner walls of two adjacent pipelines, and once welding is carried out, the expansion structure and the two pipelines are bonded together, so that the expansion structure is difficult to shrink, difficult to be pulled out from the pipelines and is transferred to a next operation node. Disclosure of Invention In order to solve the problem that the conventional internal bracing type pipeline alignment technology cannot cope with welding through adhesion in the background technology, the invention provides a pipeline welding support positioning device for municipal administration and a welding method. The technical scheme adopted by the invention for solving the technical problems is as follows: A pipeline welding, supporting and positioning device for municipal administration comprises a traveling module and an expansion module arranged at the end part of the traveling module, wherein the expansion module comprises a center cross rod, a movable cross plate, a first electromagnetic supporting block and a second electromagnetic supporting block, the movable cross plate is arranged on the periphery of the center cross rod, the distance between the movable cross plate and the center cross rod can be adjusted, the surface, away from the center cross rod, of the movable cross plate is a mounting surface, the first electromagnetic supporting block is arranged at the end part, away from the traveling module, of the mounting surface, the second electromagnetic supporting block is arranged at the end part, close to the traveling module, of the mounting surface, the expansion module can expand until the first electromagnetic supporting block abuts against and pushes the inner wall of a pipeline being mounted and the second electromagnetic supporting block abuts against the inner wall of the pipeline being mounted, the first annular end surface of the pipeline being mounted and the second annular end surface of the pipeline being mounted are coaxially arranged, a concave gap is formed between the first electromagnetic supporting block and the second electromagnetic supporting block, a welding seam is arranged at the middle part, which is away from the mounting surface, the first electromagnetic supporting block and the second electromagnetic supporting block is arranged at the end part, close to the inner annular end surface of the pipeline being mounted and/the second electromagnetic supporting block is prevented from being mounted, and the first electromagnetic supporting block and the second electromagnetic supporting block can be axially attached to the inner wall of the second electromagnetic supporting block can be driven to the inner wall of the pipeline being mounted and close to the second electromagnetic supporting block. As a further optimization scheme of the invention, a first connecting block is arranged between the first electromagnetic supporting block and the movable transverse plate, and a second connecting block is arranged between the second electromagnetic supporting block and the movable transverse plate. As a further optimization scheme of the invention, the expansion module further comprises a diagonal brace connecting rod and a first linear driver, wherein one end of the diagonal brace connecting rod is rotationally connected with the central cross rod, the other end of the diagonal brace connecting rod is rotationally connected with the movable cross plate, and one end of the first linear driver is rotationally connected with the central cross rod, and the other end of the first linear driver is rotationally connected with the movable cross plate. As a further optimization scheme of the invention, the movable transverse plate is arranged in parallel with the central transverse rod, and the movable transverse plate, the central transverse rod and the diagonal brace connecting