An overhead thermal pipeline fixed-point automatic welding traction installation system and method

Abstract

The present invention relates to the technical field of overhead pipeline installation, and discloses an overhead thermal pipeline fixed-point automatic welding traction installation system and method, which mainly includes a fixed-point welding installation workbench, a welding machine, a lifting and hoisting device, a working pipe, a fixed pier, a traction sliding bracket, a guide traction system, a sliding support rail, a flaw detection machine, a traction support rail, a fixed support plate, a sliding guide roller, a sliding bracket, a clamp, a solid insulation layer, a braking device, etc. The present invention solves the difficulty of on-site installation in complex terrain by fixed-point welding traction and dragging, with high efficiency and low cost; fixed-point welding by a fixed workbench improves welding quality; the present invention designs a detachable guide rail sliding bracket structure, solves the problem of dragging stability, and improves efficiency and reliability.

Description

Technical Field

[0001] The invention relates to the technical field of overhead pipeline installation, in particular to an overhead thermal pipeline fixed-point automatic welding traction installation system and a method thereof. Background Art

[0002] As a mainstream method of pipeline laying, overhead pipelines occupy an important position in industrial and civil pipeline transportation. At present, the welding installation of overhead pipelines mainly adopts the technical method of ground welding and nearby hoisting.

[0003] However, this traditional installation method has many disadvantages and problems. First, the efficiency of pipeline segment welding and hoisting is low, the welding quality and reliability are poor, and random inspection is difficult; in addition, for complex terrain and harsh environments such as cities, ponds, and mountains, construction will be restricted by terrain and space, and the construction is difficult and costly; at the same time, the safety risk of construction in such an environment is extremely high. The above are all key issues that need to be solved and optimized in the process of overhead pipeline welding installation;

[0004] Therefore, developing a new type of overhead pipeline welding installation system and method with high efficiency, good environmental adaptability and high construction safety is of great significance for improving the installation efficiency of overhead pipelines and improving economic benefits. Summary of the invention

[0005] The purpose of the present invention is to overcome the problems in the prior art. First, a fixed-point automatic welding traction installation system for overhead thermal pipelines is provided, and then a method based on the fixed-point automatic welding traction installation system for overhead thermal pipelines is provided.

[0006] To achieve the above-mentioned purpose, the present invention provides the following technical solutions: an overhead thermal pipeline fixed-point automatic welding traction installation system, comprising a fixed-point welding installation workbench and a working pipe, a welding machine for welding the working pipe is arranged on the fixed-point welding installation workbench, a lifting and hoisting device for transferring the working pipe is arranged on the ground on one side of the fixed-point welding installation workbench, and the lifting and hoisting device cooperates with the welding machine under the control transfer of the lifting and hoisting device to perform fixed-point welding on a plurality of working pipes arranged on one side of the fixed-point welding installation workbench;

[0007] The traction sliding bracket is provided with multiple groups and is evenly spaced along the path of the thermal pipeline. A fixed pier is installed at the bottom of the traction sliding bracket. The traction sliding bracket is used to slide and support the stable erection of the working pipe;

[0008] The guide traction system is set at the end point of the on-site fixed-point automatic welding traction installation of the working pipe. The guide traction system is connected to the end of the working pipe farthest from the fixed-point welding installation workbench to drive the moving transmission of the working pipe after welding;

[0009] The traction support system is installed between adjacent traction sliding brackets and is used to stably support the smooth movement of the working pipe after welding.

[0010] A method based on an overhead thermal pipeline fixed-point automatic welding traction installation system is as follows:

[0011] S1: Pre-install a traction sliding bracket on each fixed pier, measure the distance between adjacent fixed piers, determine the length and quantity of each working pipe of the entire pipeline according to the distance, and hoist them to the fixed-point welding installation workbench in reverse order;

[0012] S2: The lifting device hoists the first working pipe to the fixed-point welding installation workbench, welds the steel cable installation hole at the end of the working pipe, and installs the clamp welded with the sliding bracket at the predetermined installation position and fills the solid insulation layer. At the same time, the second working pipe is hoisted to the fixed-point welding installation workbench, and the clamp welded with the sliding bracket is installed at the predetermined position and filled with a solid insulation layer. After the two working pipes are butt-welded, they are installed on the sliding guide rollers of the front and rear fixed piers in the fixed-point welding installation workbench through the sliding bracket, and then fully welded by the welding machine, and the weld joint is non-destructively tested by the flaw detection machine;

[0013] S3: Install guide rails between the sliding brackets under the welded working pipe and on the starting side, thread the guide rails and the sliding brackets, install the support frame at the appropriate position between the working pipe and the guide rails, install the guide traction system on the terminal fixed pier, and extend the steel cable of the guide traction system to the steel cable installation hole on the terminal working pipe;

[0014] S4: adjusting the traction direction by positioning the guide rail, starting the traction machine to pull the welded working pipe forward, adjusting the brake caliper on the brake device to control the traction speed, until the sliding bracket under the welded working pipe is pulled to the position of the sliding guide roller on the next traction sliding bracket;

[0015] S5: Install a clamp welded with a sliding bracket at a predetermined position on the new working pipe and fill it with a solid insulation layer. Use a lifting device to hoist the new working pipe to the fixed-point welding installation workbench so that its sliding bracket is located on the sliding guide roller of the fixed pier. After the welding joints of the new working pipe are butt-jointed, use the welding machine on the fixed-point welding installation workbench to perform full welding, and use a flaw detection machine to perform non-destructive flaw detection on the welding joints.

[0016] S6: Install a guide rail on the sliding bracket under the welded working pipe near the starting point, thread the guide rail and the sliding bracket together, and install a support frame at an appropriate position between the working pipe and the guide rail.

[0017] S7: Repeat steps S4, S5, and S6 until the welding of the entire working pipe is completed;

[0018] S8: Through the guide and traction system, all sliding brackets are located on the corresponding sliding guide rollers, and the guide rails, support frames, brake devices, guide and traction systems, lifting and hoisting devices, welding machines, fixed-point welding installation workbenches, etc. are removed. The pipeline fixed-point welding and traction installation is completed.

[0019] In S4, if a complex environment such as a slope is encountered, the position of the guide pulley can be changed by using the positioning mounting hole on the positioning guide rail, thereby changing the traction direction of the steel cable. At the same time, the brake caliper can be tightened and the brake limit fixing pin can be inserted into the brake limit hole and the corresponding guide rail positioning hole to adjust the traction speed during the traction process, and the working pipe can be fixed after the traction is completed to prevent inertia from sliding down.

[0020] Compared with the prior art, the present invention has the following beneficial effects: (1) by using the method of fixed-point welding and traction, the difficulty of on-site installation in complex terrain is solved, the construction cost is reduced, and the construction efficiency is improved;

[0021] Aiming at the support and sliding problems during the traction and dragging process, a detachable guide rail sliding bracket structure is designed. At the same time, the brake device is set to solve the force balance and dragging stability problems during the traction process, thereby improving efficiency and reliability.

[0022] By fixing the workbench and performing fixed-point welding, the welding quality and reliability are improved, the frequency of welding spot checks is reduced, and the welding efficiency is improved. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] Figure 1 It is a general schematic diagram of an overhead thermal pipeline fixed-point automatic welding traction installation system;

[0024] Figure 2 It is a structural schematic diagram of a traction sliding bracket device in a fixed-point automatic welding traction installation system for overhead thermal pipelines;

[0025] Figure 3 It is a structural schematic diagram of a guide traction system in an overhead thermal pipeline fixed-point automatic welding traction installation system;

[0026] Figure 4 It is a structural schematic diagram of a braking device in a fixed-point automatic welding traction installation system for overhead thermal pipelines;

[0027] Figure 5 It is a structural schematic diagram of a sliding support guide rail in a fixed-point automatic welding traction installation system for an overhead thermal pipeline;

[0028] Among them: fixed-point welding installation workbench 1, welding machine 2, lifting and hoisting device 3, working pipe 4, fixed pier 5, traction sliding bracket 6, guide traction system 7, traction support system 8, flaw detection machine 9, fixed support plate 61, sliding guide roller 62, sliding bracket 63, hoop 64, solid insulation layer 65, braking device 66, sliding bracket mounting hole 67, support plate mounting hole 68, brake pad 661, brake limit hole 662, brake caliper 663, brake rod 664, brake fixed mounting hole 665, rotating fixing screw 666, brake limit fixing pin 667, traction machine 71, steel cable 72, guide pulley 73, guide rail support frame 74, positioning guide rail 75, positioning mounting hole 76, steel cable mounting hole 77, support frame mounting hole 78, support frame fixing screw 79, guide rail 81, guide rail positioning hole 82, web extension connecting section 83, connecting mounting hole 84, support frame 85. DETAILED DESCRIPTION

[0029] It should be noted that, in the absence of conflict, the embodiments of the present invention and the features in the embodiments may be combined with each other.

[0030] In the description of the present invention, it should be understood that the terms "center", "longitudinal", "lateral", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside" and the like indicate positions or positional relationships based on the positions 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 orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as limiting the present invention. In addition, the terms "first", "second", and the like are only used for descriptive purposes, and cannot be understood as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, features defined as "first", "second", and the like may explicitly or implicitly include one or more of the features. In the description of the present invention, unless otherwise specified, "multiple" means two or more.

[0031] In the description of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "installed", "connected", and "connected" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood by specific circumstances.

[0032] The present invention will be described in detail below with reference to the accompanying drawings and in conjunction with embodiments.

[0033] See also Figure 1 A fixed-point automatic welding traction installation system for an overhead thermal pipeline comprises a fixed-point welding installation workbench 1 and a working pipe 4. A welding machine 2 for welding the working pipe 4 is arranged on the fixed-point welding installation workbench 1. A lifting and hoisting device 3 for transferring the working pipe 4 is arranged on the ground on one side of the fixed-point welding installation workbench 1. The lifting and hoisting device 3 cooperates with the welding machine 2 under the control transfer of the lifting and hoisting device 3 to perform fixed-point welding on a plurality of working pipes 4 placed on one side of the fixed-point welding installation workbench 1.

[0034] The traction sliding bracket 6 is provided with multiple groups and is evenly spaced along the path of the thermal pipeline. The bottom of the traction sliding bracket 6 is installed with a fixed pier 5. The traction sliding bracket 6 is used to slide and support the working pipe 4 for stable erection.

[0035] The guide traction system 7 is arranged at the end point of the on-site fixed-point automatic welding traction installation of the working tube 4. The guide traction system 7 is connected to the end of the working tube 4 farthest from the fixed-point welding installation workbench 1, and is used to drive the working tube 4 after welding to move and transport;

[0036] The traction support system 8 is installed between adjacent traction sliding brackets 6 to stably support the working pipe 4 after welding to ensure smooth movement.

[0037] In the embodiment of the present invention, a flaw detector 9 is provided on the fixed-point welding installation workbench 1, and the flaw detector 9 performs non-destructive flaw detection on the weld of the working pipe 4 to ensure the quality of welding and timely repair; the distance between the fixed piers 5 is determined according to the length of the working pipe 4 to be erected and transported, ensuring that the traction sliding bracket 6 thereon can stably support the transfer of the working pipe 4;

[0038] For the welding machine 2 and the lifting and hoisting device 3, both existing common equipment are used. For the welding machine 2, an automatic welding robot and a manual welding method can be used. The installation form can be fixed or movable. The specific selection depends on the actual use requirements and will not be described in detail here.

[0039] The fixed-point welding installation workbench 1 is set at the starting point fixed pier 5 position. In order to ensure that the working pipe 4 can be welded smoothly on one side of the fixed-point welding installation workbench 1, at least two sets of fixed piers 5 need to be set in its side working area;

[0040] Since the traction sliding bracket 6 is installed on the top of the fixed pier 5 , the distance between the two traction sliding brackets 6 is equal to the distance between the corresponding fixed piers 5 to be finally installed.

[0041] In one embodiment of the present invention, Figure 2As shown, the traction sliding bracket 6 includes a fixed support plate 61, a sliding guide roller 62, a sliding bracket 63, a hoop 64, a solid insulation layer 65, a braking device 66, a sliding bracket mounting hole 67, and a support plate mounting hole 68; the fixed support plate 61 is installed on both sides of the top of the fixed pier 5, and a sliding guide roller 62 is rotated between the fixed support plates 61 on both sides. The sliding bracket 63 is welded and connected to the bottom of the hoop 64 and is installed on a single working pipe 4 through the hoop 64. The solid insulation layer 65 is filled between the hoop 64 and the working pipe 4, and the sliding bracket 63 is installed on the sliding guide roller 62;

[0042] Specifically, the braking device 66 is connected to the fixed support plate 61 via a support plate mounting hole 68 provided on the fixed support plate 61 .

[0043] As a preferred embodiment of the present invention, Figure 5 As shown, the traction support system 8 includes a guide rail 81, a guide rail positioning hole 82, a web extension connecting section 83, a connecting and mounting hole 84, and a support frame 85;

[0044] like Figure 4 As shown, the brake device 66 includes a brake pad 661, a brake limit hole 662, a brake caliper 663, a brake rod 664, a brake fixing installation hole 665, a rotation fixing screw 666, and a brake limit fixing pin 667;

[0045] like Figure 3 As shown, the guide and traction system 7 includes a traction machine 71, a steel cable 72, a guide pulley 73, a guide rail support frame 74, a positioning guide rail 75, a positioning mounting hole 76, a steel cable mounting hole 77, a support frame mounting hole 78, and a support frame fixing screw 79;

[0046] Specifically, a brake fixing mounting hole 665 is opened at one end of the brake rod 664, which is connected to the support plate mounting hole 68 by rotating a fixing screw 666, and a brake pad 661 with a brake limiting hole 662 is connected at the other end. The corresponding brake rods 664 on both sides are connected through a brake caliper 663, and the inner side of the brake pad 661 is close to the guide rail 81. The brake limiting fixing pin 667 passes through the brake limiting hole 662 and is inserted into the guide rail positioning hole 82 on the guide rail 81;

[0047] The sliding bracket 63 and the guide rail 81 are respectively provided with a sliding bracket mounting hole 67 and a guide rail positioning hole 82. The web extension connection sections 83 at both ends of the guide rail 81 in the traction support system 8 extend into the interior of the sliding bracket 63 and are respectively threadedly connected to the sliding bracket 63 through the connection mounting holes 84. The bottom surface of the guide rail 81 and the bottom surface of the sliding bracket 63 are on the same mounting plane.

[0048] A steel cable mounting hole 77 is provided at the end of the first section working pipe 4. One end of the steel cable 72 is connected to the traction machine 71, and the other end is connected to the first section working pipe 4 through the steel cable mounting hole 77 after passing around the guide pulley 73. The guide pulley 73 is installed on the positioning guide rail 75 by means of a threaded connection. The positioning guide rail 75 is vertically installed on the fixed pier 5, and the bottom is fixed to the support plate mounting hole 68 by threads. One end of the guide wheel support rod 74 supports the ground, and the other end is threadedly connected to the positioning guide rail 75 through the support frame fixing screw 79 and the support frame mounting hole 78.

[0049] As a preferred embodiment of the present invention, the guide rail 81 includes I-beams, H-beams, angle steels, railway rails, etc., and the thickness of its flange is the same as the thickness of the bottom plate of the sliding bracket 63.

[0050] As a preferred embodiment of the present invention, the width of the sliding bracket 63 is 1.0-1.5 times the width of the fixed pier 5, and the thickness of the rib plate should be 1.1-1.5 times the thickness of a conventional railless bracket.

[0051] As a preferred embodiment of the present invention, a plurality of positioning installation holes 76 are provided on the positioning guide rail 75 , and the guide pulley 73 can be installed on different positioning installation holes 76 to achieve height adjustment.

[0052] A method based on an overhead thermal pipeline fixed-point automatic welding traction installation system is as follows:

[0053] S1: Pre-install a traction sliding bracket 6 on each fixed pier, measure the distance between adjacent fixed piers 5, determine the length and quantity of each working pipe 4 of the entire pipeline according to the distance, and hoist them onto the fixed-point welding installation workbench 1 in reverse order;

[0054] S2: The hoisting device 3 hoists the first working pipe 4 onto the fixed-point welding installation workbench 1, and welds the steel cable installation hole 77 at the end of the working pipe 4. At the same time, the clamp 64 welded with the sliding bracket 63 is installed at the predetermined installation position and filled with a solid insulation layer 65. At the same time, the second working pipe 4 is hoisted onto the fixed-point welding installation workbench 1, and the clamp 64 welded with the sliding bracket 63 is installed at the predetermined position and filled with a solid insulation layer 65. After the two working pipes 4 are butt-welded, they are installed on the sliding guide rollers 62 of the front and rear fixed piers 5 in the fixed-point welding installation workbench 1 through the sliding bracket 63, and then fully welded by the welding machine 2, and the flaw detection machine 9 is used to perform non-destructive flaw detection on the weld joint;

[0055] S3: Install guide rails 81 between the sliding brackets 63 under the welded working pipe 4 and on the starting side, thread the guide rails 81 and the sliding brackets 63, install a support frame 85 at an appropriate position between the working pipe 4 and the guide rails 81, install the guide traction system 7 on the terminal fixed pier 5, and extend the steel cable 72 of the guide traction system 7 to the steel cable installation hole 77 on the terminal working pipe 4;

[0056] S4: adjusting the traction direction by positioning the guide rail 75, starting the traction machine 71 to pull the welded working pipe 4 forward, adjusting the brake caliper 663 on the brake device 66 to control the traction speed, until the sliding bracket 63 under the welded working pipe 4 is pulled to the position of the sliding guide roller 62 on the next traction sliding bracket 6;

[0057] S5: A clamp 64 welded with a sliding bracket 63 is installed at a predetermined position on the new working pipe 4 and filled with a solid insulation layer 65. The new working pipe 4 is hoisted to the fixed-point welding installation workbench 1 by using the lifting and hoisting device 3, so that the sliding bracket 63 is located on the sliding guide roller 62 of the fixed pier 5. After the welding joints of the new working pipe 4 are butt-jointed, the welding machine 2 on the fixed-point welding installation workbench 1 is used to perform full welding, and at the same time, the flaw detection machine 9 is used to perform non-destructive flaw detection on the welding joints;

[0058] S6: Install a guide rail 81 on the side of the sliding bracket 63 under the welded working pipe 4 close to the starting point, thread the guide rail 81 and the sliding bracket 63 together, and install a support frame 85 at an appropriate position between the working pipe 4 and the guide rail 81;

[0059] S7: Repeat steps S4, S5, and S6 until the entire section of the working pipe 4 is welded;

[0060] S8: All sliding brackets 63 are located on the corresponding sliding guide rollers 62 through the guiding and traction system 7, and the guide rails 81, support frame 85, brake device 66, guiding and traction system 7, lifting and hoisting device 3, welding machine 2, fixed-point welding installation workbench 1, etc. are removed, and the pipeline fixed-point welding and traction installation is completed.

[0061] In the above S4, if a complex environment such as a slope is encountered, the position of the guide pulley 73 can be changed by using the positioning mounting hole 76 on the positioning guide rail 75, thereby changing the pulling direction of the steel cable 72. At the same time, the brake caliper 663 can be tightened and the brake limit fixing pin 667 can be inserted into the brake limit hole 662 and the corresponding guide rail positioning hole 82 to adjust the pulling speed during the pulling process, and fix the working tube 4 after the pulling is completed to prevent inertial sliding.

[0062] The above describes in detail the preferred implementation of this patent, but this patent is not limited to the above implementation. Various changes can be made within the knowledge scope of ordinary technicians in this field without departing from the purpose of this patent.

Claims

1. An overhead thermal pipeline fixed-point automatic welding traction installation system, characterized in that: The invention comprises a fixed-point welding installation workbench (1) and a working pipe (4); a welding machine (2) for welding the working pipe (4) is arranged on the fixed-point welding installation workbench (1); a lifting and hoisting device (3) for transferring the working pipe (4) is arranged on the ground at one side of the fixed-point welding installation workbench (1); the lifting and hoisting device (3) cooperates with the welding machine (2) under the control of the lifting and hoisting device (3) to perform fixed-point welding on a plurality of working pipes (4) arranged at one side of the fixed-point welding installation workbench (1); A plurality of traction sliding brackets (6) are provided and are evenly spaced along the path of the thermal pipeline. A fixed pier (5) is installed at the bottom of the traction sliding bracket (6). The traction sliding bracket (6) is used to slide and support the working pipe (4) for stable installation. The traction sliding bracket (6) comprises a fixed support plate (61), a sliding guide roller (62), a sliding bracket (63), a hoop (64), a solid thermal insulation layer (65), a braking device (66), a sliding bracket mounting hole (67), and a support plate mounting hole (68); the fixed support plate (61) is mounted on both sides of the top of the fixed pier (5); a sliding guide roller (62) is rotated between the fixed support plates (61) on both sides; the sliding bracket (63) is welded to the bottom of the hoop (64) and is mounted on a single working tube (4) through the hoop (64); a solid thermal insulation layer (65) is filled between the hoop (64) and the working tube (4); the sliding bracket (63) is mounted on the sliding guide roller (62); and the braking device (66) is connected to the fixed support plate (61) through a support plate mounting hole (68) provided on the fixed support plate (61); The brake device (66) comprises a brake pad (661), a brake limit hole (662), a brake caliper (663), a brake rod (664), a brake fixing installation hole (665), a rotating fixing screw (666), and a brake limit fixing pin (667); one end of the brake rod (664) is provided with a brake fixing installation hole (665), the rotating fixing screw (666) is connected to the support plate installation hole (68), and the other end is connected to the brake pad (661) with the brake limit hole (662), and the two sides corresponding to the brake rod (664) are connected through the brake caliper (663), the inner side of the brake pad (661) is closely attached to the guide rail (81), and the brake limit fixing pin (667) passes through the brake limit hole (662) and is inserted into the guide rail positioning hole (82) on the guide rail (81); A guide and traction system (7) is arranged at the end point of the on-site fixed-point automatic welding and traction installation of the working tube (4), and the guide and traction system (7) is connected to the end of the working tube (4) farthest from the fixed-point welding installation workbench (1), and is used to drive the working tube (4) to move and transport after welding; The guide and traction system (7) comprises a traction machine (71), a steel cable (72), a guide pulley (73), a guide rail support frame (74), a positioning guide rail (75), a positioning mounting hole (76), a steel cable mounting hole (77), a support frame mounting hole (78), and a support frame fixing screw (79); a steel cable mounting hole (77) is provided at the end of the first section of the working tube (4); one end of the steel cable (72) is connected to the traction machine (71), and the other end passes through the guide pulley (73) and is connected to the first section of the working tube (4) through the steel cable mounting hole (77); the guide pulley (73) is mounted on the positioning guide rail (75) by means of a threaded connection; the positioning guide rail (75) is vertically mounted on the fixed pier (5), and the bottom is fixed to the support plate mounting hole (68) by means of a thread; one end of the guide rail support frame (74) supports the ground, and the other end is threadedly connected to the positioning guide rail (75) through the support frame fixing screw (79) and the support frame mounting hole (78); A traction support system (8) installed between adjacent traction sliding brackets (6) for stably supporting the welded working pipe (4) to ensure smooth movement; The traction support system (8) comprises a guide rail (81), a guide rail positioning hole (82), a web extension connection section (83), a connection installation hole (84), and a support frame (85); the sliding bracket (63) and the guide rail (81) are respectively provided with a sliding bracket installation hole (67) and a guide rail positioning hole (82); the web extension connection sections (83) at both ends of the guide rail (81) in the traction support system (8) extend into the interior of the sliding bracket (63) and are respectively threadedly connected to the sliding bracket (63) through the connection installation holes (84); and the bottom surface of the guide rail (81) and the bottom surface of the sliding bracket (63) are on the same installation plane.

2. The overhead thermal pipeline fixed-point automatic welding traction installation system according to claim 1 is characterized in that: The fixed-point welding installation workbench (1) is provided with a flaw detection machine (9), the fixed-point welding installation workbench (1) is arranged at the position of the starting point fixed pier (5), and at least two groups of fixed piers (5) are arranged in the side working area of ​​the fixed-point welding installation workbench (1).

3. According to claim 2, an overhead thermal pipeline fixed-point automatic welding traction installation system, the guide rail (81) style includes I-beam, H-beam, angle steel, railway rail, and the thickness of the flange is the same as the thickness of the bottom plate of the sliding bracket (63); The width of the sliding bracket (63) is 1.0-1.5 times the width of the fixed pier (5), the thickness of the rib plate is 1.1-1.5 times the thickness of the bracket without a guide rail, and the positioning guide rail (75) is provided with a plurality of positioning installation holes (76).

4. A method for an overhead thermal pipeline fixed-point automatic welding traction installation system based on any one of claims 1-3, characterized in that: The details are as follows: S1: pre-install a traction sliding bracket (6) on each fixed pier, measure the distance between adjacent fixed piers (5), determine the length and quantity of each working pipe (4) of the entire pipeline according to the distance, and hoist them onto the fixed-point welding installation workbench (1) in reverse order; S2: The lifting and hoisting device (3) hoists the first working pipe (4) onto the fixed-point welding installation workbench (1), welds a steel cable installation hole (77) at the end of the working pipe (4), and installs a clamp (64) welded with a sliding bracket (63) at a predetermined installation position and fills the clamp (65). At the same time, the second working pipe (4) is hoisted onto the fixed-point welding installation workbench (1), and a clamp (64) welded with a sliding bracket (63) is installed at a predetermined position and fills the clamp (65). After the two working pipes (4) are butt-welded, they are installed on the sliding guide rollers (62) of the front and rear fixed piers (5) in the fixed-point welding installation workbench (1) through the sliding bracket (63), and then fully welded by the welding machine (2), and a non-destructive flaw detection machine (9) is used to perform non-destructive flaw detection on the weld joint; S3: Install guide rails (81) between the sliding brackets (63) under the welded working pipe (4) and on the starting side, thread the guide rails (81) and the sliding brackets (63), install a support frame (85) at an appropriate position between the working pipe (4) and the guide rails (81), install the guide traction system (7) on the terminal fixed pier (5), and extend the steel cable (72) of the guide traction system (7) to the steel cable installation hole (77) on the terminal working pipe (4); S4: adjusting the traction direction by means of the positioning guide rail (75), starting the traction machine (71) to tug the welded working pipe (4) forward, and adjusting the brake caliper (663) on the brake device (66) to control the traction speed until the sliding bracket (63) under the welded working pipe (4) is tugged to the position of the sliding guide roller (62) on the next traction sliding bracket (6); S5: a clamp (64) welded with a sliding bracket (63) is installed at a predetermined position on the new working pipe (4) and filled with a solid insulation layer (65); the new working pipe (4) is hoisted to the fixed-point welding installation workbench (1) using a lifting and hoisting device (3) so that the sliding bracket (63) is located on the sliding guide roller (62) of the fixed pier (5); the welding joints of the new working pipe (4) are butt-jointed, and then full welding is performed using a welding machine (2) on the fixed-point welding installation workbench (1); and a non-destructive flaw detection machine (9) is used to perform a flaw detection on the welding joints; S6: Installing a guide rail (81) on the sliding bracket (63) under the welded working pipe (4) near the starting point, threading the guide rail (81) and the sliding bracket (63), and installing a support frame (85) at an appropriate position between the working pipe (4) and the guide rail (81); S7: repeating steps S4, S5, and S6 until the welding of the entire section of the working pipe (4) is completed; S8: All the sliding brackets (63) are positioned on the corresponding sliding guide rollers (62) through the guide traction system (7), and the guide rails (81), the support frame (85), the braking device (66), the guide traction system (7), the lifting device (3), the welding machine (2), the fixed-point welding installation workbench (1), etc. are removed, and the pipeline fixed-point welding traction installation is completed.

5. The method for installing an overhead thermal pipeline fixed-point automatic welding traction system according to claim 4 is characterized in that: In the above-mentioned S4, when encountering a complex environment such as a slope, the position of the guide pulley (73) is changed by using the positioning mounting hole (76) on the positioning guide rail (75), thereby changing the pulling direction of the steel cable (72), and at the same time, the brake caliper (663) is tightened and the brake limit fixing pin (667) is inserted into the brake limit hole (662) and the corresponding guide rail positioning hole (82). The pulling speed is adjusted during the pulling process, and the working tube (4) is fixed after the pulling is completed to prevent inertial sliding.

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