Welding device for gas pipeline engineering

Abstract

The utility model relates to the technical field of gas pipeline engineering, and discloses a welding device for gas pipeline engineering, which comprises an operating platform, a motor is mounted on one side of the operating platform, a transmission mechanism is arranged on an output shaft of the motor, and a fixing plate is fixedly connected to one side of the top of the operating platform. The other side of the operation table is slidably connected with a movable plate. Under the matching action of the transmission mechanism and the fixing mechanism, the pipeline can be synchronously rotated after being supported and fixed, the synchronous rotation of the pipeline can enable the time of the welding gun body staying on a welding surface to be more uniform, welding defects are effectively avoided, and meanwhile, under the action of the preheating mechanism, the welding gun body can be continuously preheated. According to the preheating device, the rotating welding position can be evenly preheated, the problem that a weld joint is subjected to cold cracking due to the poor preheating effect is solved, and the problems that in the using process of an existing device, two sections of pipelines cannot be synchronously rotated, and the weld joint cannot be evenly preheated are solved.

Description

Technical Field

[0001] The utility model relates to the technical field of gas pipeline engineering, in particular to a welding device for gas pipeline engineering. Background Art

[0002] Gas pipeline is also called gas transmission pipeline. Gas pipeline engineering refers to the engineering project of building and maintaining pipeline system for transporting gas. The purpose of this project is to transport gas from supply point to final gas consumption point safely and efficiently.

[0003] When laying gas pipelines, it is often necessary to weld two pipelines. Some of the existing welding devices are unable to rotate synchronously after fixing the two pipelines, resulting in inconsistent stay time of the welding gun on the welding point during the welding process, causing uneven welding, thereby affecting the quality of the weld. At the same time, the weld usually needs to be preheated before welding the pipeline, especially when the pipeline wall is thick or the ambient temperature is low. Some of the existing welding devices do not have a preheating process, and usually require manual hand-held flame guns and other equipment to preheat the weld, which can easily cause leakage or repeated heating of the weld. Failure to preheat the weld evenly may cause cold cracking or deformation of the weld after welding, thereby affecting the sealing and strength of the pipeline, resulting in an increased risk of gas leakage. Utility Model Content

[0004] The purpose of the utility model is to provide a welding device for gas pipeline engineering to solve the problems raised in the above background technology.

[0005] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: a welding device for gas pipeline engineering, comprising an operating table, a motor is installed on one side of the operating table, and a transmission mechanism is provided on the output shaft of the motor; a fixed plate is fixedly connected to one side of the top of the operating table, and a movable plate is slidably connected to the other side of the operating table; a connecting column is provided on one side of the movable plate and the fixed plate, and the connecting column penetrates to the other side of the fixed plate and the connecting column and is rotatably connected to the inner wall thereof; a fixing mechanism is installed on one end of the connecting column; support plates are fixedly connected to both sides of the top of the operating table, a preheating mechanism is provided on the top of the support plate, a hydraulic rod is embedded in the support plate on one side, a cleaning brush is fixedly connected to the output shaft of the hydraulic rod, a welding gun body is installed on the support plate on the other side, a sliding groove is symmetrically opened on one side of the operating table, and a moving wheel is installed at the bottom of the moving plate, and the moving wheel is slidably connected to the sliding groove.

[0006] Preferably, the transmission mechanism includes a round tube, which is fixedly connected to the output shaft of the motor, and the inner cavity of the round tube is slidably connected to a square rod, the surfaces of the round tube and the square rod are fixedly connected to a driving pulley, the surface of the driving pulley is movably connected to a belt, and the surface of the connecting column is fixedly connected to a passive pulley, and the passive pulley is used in conjunction with the belt.

[0007] Preferably, the fixing mechanism includes a mounting plate, which is fixedly connected to one end of the connecting column, the inner cavity of the mounting plate is rotatably connected to a bidirectional screw rod, the upper and lower surfaces of the bidirectional screw rod are threadedly connected to a slider, and one side of the slider is fixedly connected to a support rod.

[0008] Preferably, the preheating mechanism comprises a mounting shell, the mounting shell is fixedly connected to the support plate, a fan is installed above the inner cavity of the mounting shell, and a plurality of heating wires are arranged below the inner cavity of the mounting shell.

[0009] Preferably, a placement bin is fixedly connected to the bottom of the operating table, and a collection box is slidably connected to the inner cavity of the placement bin.

[0010] Preferably, the inner wall shape of the circular tube is square, and the surface shape of the square rod is square.

[0011] Compared with the prior art, the beneficial effects of the utility model are as follows:

[0012] The utility model can synchronously rotate the pipeline support after being fixed through the cooperation of the transmission mechanism and the fixing mechanism. The synchronous rotation of the pipeline can make the time that the welding gun body stays on the welding surface more uniform, which helps to improve the quality of the weld and effectively avoid the occurrence of welding defects. The cooperation of the hydraulic rod and the cleaning brush can clean the pipeline welding part. At the same time, under the action of the preheating mechanism, the rotating welding part can be uniformly preheated, avoiding the problem of cold cracking or deformation of the weld after welding due to poor preheating effect, improving the strength and density of the weld, and solving the problem that the current device cannot synchronously rotate the two sections of the pipeline and cannot uniformly preheat the weld during use. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] Figure 1 It is a schematic diagram of the three-dimensional structure of the utility model;

[0014] Figure 2 It is a schematic diagram of a partial three-dimensional structure in the utility model;

[0015] Figure 3 It is a schematic diagram of a partial three-dimensional cross-sectional structure in the utility model;

[0016] Figure 4 It is a schematic diagram of a partial three-dimensional unfolded structure in the utility model;

[0017] Figure 5 It is a schematic diagram of a local three-dimensional cross-sectional structure in the utility model.

[0018] In the figure: 1. operating table; 2. motor; 3. transmission mechanism; 31. driving pulley; 32. belt; 33. driven pulley; 34. round tube; 35. square rod; 4. fixed plate; 5. movable plate; 6. connecting column; 7. fixing mechanism; 71. mounting plate; 72. bidirectional screw rod; 73. slider; 74. support rod; 8. support plate; 9. preheating mechanism; 91. mounting shell; 92. fan; 93. heating wire; 10. hydraulic rod; 11. cleaning brush; 12. welding gun body; 13. sliding groove; 14. movable wheel; 15. storage bin; 16. collection box. DETAILED DESCRIPTION

[0019] 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 the embodiments. 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.

[0020] See also Figure 1-5As shown, a welding device for gas pipeline engineering comprises an operating table 1, a motor 2 is installed on one side of the operating table 1, a transmission mechanism 3 is provided on the output shaft of the motor 2, a fixed plate 4 is fixedly connected to one side of the top of the operating table 1, a movable plate 5 is slidably connected to the other side of the operating table 1, a connecting column 6 is provided on one side of the movable plate 5 and the fixed plate 4, the connecting column 6 penetrates to the other side of the fixed plate 4 and the connecting column 6 and is rotatably connected to the inner wall thereof, a fixing mechanism 7 is installed on one end of the connecting column 6, support plates 8 are fixedly connected to both sides of the top of the operating table 1, a preheating mechanism 9 is provided on the top of the support plate 8, a hydraulic rod 10 is embedded in the support plate 8 on one side, a cleaning brush 11 is fixedly connected to the output shaft of the hydraulic rod 10, a welding gun body 12 is installed on the support plate 8 on the other side, a sliding groove 13 is symmetrically provided on one side of the operating table 1, and the movable plate 4 is provided with a plurality of connecting columns 6. A moving wheel 14 is installed at the bottom of 5, and the moving wheel 14 is slidably connected with the sliding groove 13. The device can synchronously rotate the pipeline after supporting and fixing it through the cooperation of the transmission mechanism 3 and the fixing mechanism 7. The synchronous rotation of the pipeline can make the welding gun body 12 stay on the welding surface for a more uniform time, which helps to improve the quality of the weld and effectively avoid the occurrence of welding defects. The hydraulic rod 10 and the cleaning brush 11 can clean the pipeline welding part. At the same time, under the action of the preheating mechanism 9, the rotating welding part can be uniformly preheated, avoiding the problem of cold cracking or deformation of the weld after welding due to poor preheating effect, improving the strength and density of the weld, and solving the problem that the current device cannot synchronously rotate the two sections of the pipeline during use and cannot uniformly preheat the weld.

[0021] The transmission mechanism 3 includes a round tube 34, which is fixedly connected to the output shaft of the motor 2, and a square rod 35 is slidably connected to the inner cavity of the round tube 34. The surfaces of the round tube 34 and the square rod 35 are fixedly connected to the driving pulley 31, and the surface of the driving pulley 31 is movably connected to the belt 32. The surface of the connecting column 6 is fixedly connected to the passive pulley 33, which is used in conjunction with the belt 32. A connecting plate is fixedly connected between the passive pulley 33 on one side of the movable plate 5 and the corresponding driving pulley 31. In this embodiment, through the arrangement of the driving pulley 31, the belt 32, the passive pulley 33, the round tube 34 and the square rod 35, the two sections of the pipeline can be rotated synchronously during welding, so that the welding gun body 12 and the pipeline weld maintain a relatively stable contact time, thereby ensuring the uniformity of the weld, thereby improving the efficiency of pipeline welding and the degree of automation of the device, and the square rod 35 is telescopic in the round tube 34, and the length can be adjusted, so it is convenient to disassemble and assemble the pipeline.

[0022] The fixing mechanism 7 includes a mounting plate 71, which is fixedly connected to one end of the connecting column 6. The inner cavity of the mounting plate 71 is rotatably connected to a bidirectional screw rod 72. The upper and lower surfaces of the bidirectional screw rod 72 are threadedly connected to a slider 73. One side of the slider 73 is fixedly connected to a support rod 74. In this embodiment, through the arrangement of the mounting plate 71, the bidirectional screw rod 72, the slider 73 and the support rod 74, the two support rods 74 can be moved toward or away from each other, thereby achieving support and fixation and release of pipes of different diameters, and the threaded connection method is self-locking, which avoids the situation where loosening of the pipe support causes poor pipe welding effect.

[0023] The preheating mechanism 9 includes a mounting shell 91, which is fixedly connected to the support plate 8. A fan 92 is installed above the inner cavity of the mounting shell 91, and a plurality of heating wires 93 are arranged below the inner cavity of the mounting shell 91. In this embodiment, by arranging the mounting shell 91, the fan 92 and the heating wires 93, the fan 92 can drive air to blow toward the pipe welding part, and the air is heated by the heating wires 93, so that the welding part of the pipe can be uniformly preheated when the pipe rotates, thereby avoiding cracking or deformation of the weld due to poor preheating effect, thereby improving the quality of pipe welding.

[0024] A placement bin 15 is fixedly connected to the bottom of the operating table 1, and a collection box 16 is slidably connected to the inner cavity of the placement bin 15. In this embodiment, through the arrangement of the placement bin 15 and the collection box 16, the foreign matter under cleaning can be centrally collected and cleaned, thereby preventing the foreign matter from scattering on the ground and affecting the surrounding environment.

[0025] The inner wall of the circular tube 34 is square in shape, and the surface of the square rod 35 is square in shape. In this embodiment, through this arrangement, since the contact surfaces of the circular tube 34 and the square rod 35 are both flat, friction and wear can be reduced, which helps to improve the stability and operating efficiency of the transmission mechanism 3.

[0026] It is worth noting that the welding gun body 12 proposed in the present technical solution is in the prior art and can be used to weld gas pipelines. The working principle and beneficial effects of the welding gun body 12 when used are not described in detail here.

[0027] Working principle: First, the two sections of gas pipelines to be welded are respectively put on the surfaces of the support rods 74 on both sides, and then the handle on the top of the two-way screw rod 72 is rotated to allow the slider 73 on the surface of the two-way screw rod 72 to drive the support rods 74 to move back and forth, so that the inner walls of the two sections of the pipeline can be supported and fixed, and then the moving plate 5 is pushed to make the moving wheel 14 at the bottom slide in the sliding groove 13, so that the passive pulley 33 on one side of the moving plate 5 pulls the active pulley 31 at the bottom through the connecting plate to move, and then the square rod 35 is slid into the inner cavity of the round tube 34, and the moving plate 5 is continued to be pushed until the welding surfaces of the two sections of the pipeline are in contact and fit, and the next step is to start the motor 2 to drive the round tube 34 and the square rod 35 to rotate, so that the active pulley 31 drives the passive pulley through the belt 32 The pulley 33 rotates, and the rotating passive pulley 33 drives the connecting column 6 to rotate, thereby rotating the fixing mechanism 7 and the pipeline on both sides, and realizing the synchronous rotation of the two sections of the pipeline. Next, the hydraulic rod 10 is started to make the cleaning brush 11 contact the surface of the pipeline to clean the welding surface of the two sections of the pipeline, thereby ensuring the cleanliness of the welding surface. Then, the fan 92 and the electric heating wire 93 are started to blow hot air to preheat the rotating pipeline evenly. While preheating the pipeline, the hot air can also blow the detached impurities into the collection box 16 for centralized storage. The collection box 16 can be pulled out from the storage bin 15 to clean the collected impurities. Finally, when the preheating and cleaning of the pipeline weld are completed, the welding gun body 12 can be used to weld the two sections of the pipeline.

[0028] It should be noted that, in this article, relational terms such as first and second, etc. are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "include", "comprise" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device. In the absence of further restrictions, the elements defined by the sentence "comprise a ..." do not exclude the existence of other identical elements in the process, method, article or device including the elements.

[0029] 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 welding device for gas pipeline engineering, comprising an operating table (1), characterized in that: A motor (2) is installed on one side of the operating table (1), and a transmission mechanism (3) is arranged on the output shaft of the motor (2). A fixed plate (4) is fixedly connected to one side of the top of the operating table (1), and a movable plate (5) is slidably connected to the other side of the operating table (1). A connecting column (6) is arranged on one side of the movable plate (5) and the fixed plate (4). The connecting column (6) penetrates the fixed plate (4) and the other side of the connecting column (6) and is rotatably connected to the inner wall thereof. A fixing mechanism (7) is installed on one end of the connecting column (6). Support plates (8) are fixedly connected to both sides of the top of the workbench (1), and a preheating mechanism (9) is arranged on the top of the support plate (8). A hydraulic rod (10) is embedded in the support plate (8) on one side, and a cleaning brush (11) is fixedly connected to the output shaft of the hydraulic rod (10). A welding gun body (12) is installed on the support plate (8) on the other side. A sliding groove (13) is symmetrically opened on one side of the operating table (1), and a moving wheel (14) is installed at the bottom of the moving plate (5), and the moving wheel (14) is slidably connected to the sliding groove (13).

2. A welding device for gas pipeline engineering according to claim 1, characterized in that: The transmission mechanism (3) comprises a round tube (34), the round tube (34) is fixedly connected to the output shaft of the motor (2), the inner cavity of the round tube (34) is slidably connected to a square rod (35), the surfaces of the round tube (34) and the square rod (35) are fixedly connected to a driving pulley (31), the surface of the driving pulley (31) is movably connected to a belt (32), the surface of the connecting column (6) is fixedly connected to a passive pulley (33), and the passive pulley (33) is used in conjunction with the belt (32).

3. A welding device for gas pipeline engineering according to claim 1, characterized in that: The fixing mechanism (7) comprises a mounting plate (71), the mounting plate (71) being fixedly connected to one end of the connecting column (6), the inner cavity of the mounting plate (71) being rotatably connected to a bidirectional screw rod (72), the upper and lower surfaces of the bidirectional screw rod (72) being threadedly connected to a slider (73), and one side of the slider (73) being fixedly connected to a support rod (74).

4. A welding device for gas pipeline engineering according to claim 1, characterized in that: The preheating mechanism (9) comprises a mounting shell (91), wherein the mounting shell (91) is fixedly connected to the support plate (8), a fan (92) is mounted above the inner cavity of the mounting shell (91), and a plurality of electric heating wires (93) are arranged below the inner cavity of the mounting shell (91).

5. A welding device for gas pipeline engineering according to claim 1, characterized in that: The bottom of the operating table (1) is fixedly connected to a placement bin (15), and the inner cavity of the placement bin (15) is slidably connected to a collection box (16).

6. A welding device for gas pipeline engineering according to claim 2, characterized in that: The inner wall shape of the circular tube (34) is square, and the surface shape of the square rod (35) is square.

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