Butt joint device for pipeline welding

Abstract

The utility model discloses a butt joint device for pipeline welding, which comprises two rails and two clamps, the two rails are symmetrically arranged left and right, the rails are arc-shaped, the two sets of clamps are respectively arranged on the two rails, and the clamps slide along the directions of the rails in an arc line and can be fixedly connected to the rails. According to the utility model, the clamp is used for fixing the pipeline and driving the clamp to move on the track along the arc-shaped track, so that the deflection angle of the pipeline is adjusted, and the welding butt joint operation of adapting to different included angles between two pipelines within a certain angle is realized.

Description

Technical Field

[0001] The utility model relates to the field of welding tools, in particular to a butt joint for pipeline welding. Background Art

[0002] A pipeline is a device connected by pipes, pipe connectors, and valves for transporting gas, liquid, or fluids containing solid particles. There are many types of pipelines, among which metal pipelines are widely used. In the process of connecting metal pipelines, welding is a common connection method. Construction workers often use welding pipe butt joints in the process of welding pipelines.

[0003] Existing pipe welding butt joints usually place the two pipes to be welded on the same straight line so that they are in contact with each other and use a clamp to fix the two pipes, so that the user can weld the contact position of the two pipes. However, in actual use, there is also a need to weld two pipes at an angle, and most of the existing welding butt joints cannot meet this welding requirement. Although there are some butt joints for oblique welding, these welding butt joints are usually used for welding between two pipes with a fixed angle, and their scope of application is relatively small. Utility Model Content

[0004] The purpose of the utility model is to provide a butt joint for pipe welding, which fixes the pipe by a clamp and drives the clamp to move in a circular arc on a track to adjust the deflection angle of the pipe, thereby realizing a welding butt joint operation that adapts to different angles between two pipes within a certain angle.

[0005] The technical solution adopted by the present invention to solve the above problems is:

[0006] A butt joint for pipe welding comprises a track and a clamp. The track is symmetrically arranged with two tracks and is in an arc shape. The clamp is provided in two groups and is respectively arranged on the two tracks. The clamp slides in an arc line along the direction of the track and can be fixedly connected to the track.

[0007] In the above technical solution, preferably, when the clamp clamps the pipe, the welding surface of the pipe is located at the center of the track, and the track is connected to a driving mechanism, which drives the track to rotate in the forward and backward direction along the center of the track.

[0008] In the above technical solution, preferably, the driving mechanism includes a motor, a rotating seat, a first gear and a second gear, the first gear is coaxially fixed on the rotating shaft of the motor, the second gear is rotatably set on the rotating seat, the first gear and the second gear are meshed and connected, the second gear is coaxially fixed with a rotating rod, and the rotating rod is fixedly connected to the track.

[0009] In the above technical solution, preferably, the track includes an inner track and an outer track, the centers of the inner track and the outer track coincide, the upper ends of the inner track and the outer track are fixedly connected by a cover plate, and the lower ends of the inner track and the outer track are fixedly connected, and the inner track and the outer track are both provided with clamps, and the clamps on the inner track and the outer track are fixedly connected by a connecting rod, and the clamps on the inner track and the outer track are used to clamp and fix the same pipe.

[0010] In the above technical solution, preferably, the inner rail and the outer rail both include a front rail and a rear rail, and the clamps on the inner rail and the outer rail are correspondingly slidably arranged on the front rail and the rear rail.

[0011] In the above technical solution, preferably, the clamp includes a sliding seat, a fixed chuck and a movable chuck, the sliding seat slides and can be fixedly connected to the track, the fixed chuck is fixed on the sliding seat, the movable chuck is slidably set on the sliding seat and the movable chuck is driven to move by a driving device in the sliding seat to move closer to and away from the fixed chuck.

[0012] Compared with the prior art, the present invention has the following advantages and effects:

[0013] The utility model fixes two pipes to be welded on two fixtures in two tracks, and drives the two fixtures to move along the tracks and then fix them, so that the welding surfaces of the two pipes remain in contact, thereby facilitating the user to perform welding operations on the two pipes. Since the fixture can move along an arc-shaped trajectory on the track, the deflection angle of the pipe fixed in the fixture can be adjusted. Therefore, the utility model can achieve the purpose of butt-jointing two pipes at an angle before welding. At the same time, by adjusting the position of the fixture on the track, the welding butt joint operation of different angles between the two pipes can be adapted within a certain angle, thereby increasing the scope of application of the utility model. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 It is a front structural schematic diagram of a butt joint for pipe welding according to an embodiment of the utility model.

[0015] Figure 2 yes Figure 1 Enlarged view of point A in the middle.

[0016] Figure 3 yes Figure 1 Side sectional view of the middle drive mechanism.

[0017] Figure 4 yes Figure 2 A partial sectional view of the right side.

[0018] Among them, track 1, inner track 11, outer track 12, cover plate 13, front track 14, rear track 15, slide hole 16, slide rail 17, clamp 2, connecting rod 21, sliding seat 22, fixed chuck 23, movable chuck 24, pipe 3, welding surface 31, drive mechanism 4, motor 41, rotating seat 42, first gear 43, second gear 44, rotating rod 45, and hand screw 5. DETAILED DESCRIPTION

[0019] The present invention will be further described in detail below with reference to the accompanying drawings and through examples. The following examples are provided to explain the present invention, but the present invention is not limited to the following examples.

[0020] See also Figure 1-Figure 4 The present embodiment provides a butt joint for pipe welding, comprising a track 1 and a clamp 2. The track 1 is symmetrically arranged with two tracks 1, and the track 1 is arc-shaped. The clamp 2 is provided in two groups and is respectively arranged on the two tracks 1. The clamp 2 slides in an arc line along the direction of the track 1 and can be fixedly connected to the track 1.

[0021] When the present invention is used, first, the welding surfaces 31 of the two pipes 3 to be welded need to be cut into bevels so that the welding surfaces 31 of the two pipes 3 can fit together, thereby facilitating welding. This method is a conventional welding method in the art.

[0022] The present invention fixes two pipes 3 to be welded on the clamps 2 in the two tracks 1 respectively, and drives the two clamps 2 to move along the track 1 respectively, so that the welding surfaces 31 of the two pipes 3 are in contact at the middle position of the two tracks 1, and the welding surfaces 31 of the two pipes 3 can fit together, and then fix the two clamps 2 on the track 1 so that the welding surfaces 31 of the two pipes 3 remain in a fit state, thereby facilitating the user to perform welding operations on the two pipes 3. Since the clamps 2 can move along an arc-shaped trajectory on the track 1, the deflection angle of the pipes 3 fixed in the clamps 2 can be adjusted. Therefore, the present invention can realize the oblique docking of the two pipes 3 before welding, and at the same time, by adjusting the position of the clamps 2 on the track 1, the welding docking operation of the two pipes 3 with different angles can be adapted within a certain angle, thereby improving the scope of application of the present invention.

[0023] See also Figure 2 In this embodiment, the fixture 2 is fixed to the track 1 using a thumb screw 5 with a threaded rod. A sliding hole 16 is provided on the side of the track 1. The threaded rod of the thumb screw 5 is inserted through the sliding hole 16 and then screwed into the fixture 2. After tightening the thumb screw 5, the fixture 2 and the track 1 are fixed. A slide rail 17 for the sliding of the fixture 2 is provided on the inner side of the track 1.

[0024] See also Figure 1 When the clamp 2 clamps the pipe 3, the welding surface 31 of the pipe 3 is located at the center of the track 1. The track 1 is connected to a driving mechanism 4, which drives the track 1 to rotate in the forward and backward directions along the center of the track 1.

[0025] The track 1 is driven to rotate by the driving mechanism 4, so that the pipe 3 in the clamp 2 rotates at the same time. Since the welding surfaces 31 of the two pipes 3 are located at the center of the two tracks 1 after being fitted together, when the track 1 rotates in the front-to-back direction along its circular position under the action of the driving mechanism 4, the positions of the welding surfaces 31 of the two pipes 3 can remain relatively stable. When welding, the user only needs to hold the welding gun close to the welding surface 31 from any front or back side of the track 1 to start welding. The welding operation can be completed after the welding surface 31 rotates one circle under the action of the driving mechanism 4. The user does not need to walk or change posture to weld from various angles, thereby reducing the difficulty of welding the pipe 3 and the user's work intensity.

[0026] See also Figure 1 、 Figure 3 The driving mechanism 4 includes a motor 41, a rotating seat 42, a first gear 43 and a second gear 44. The first gear 43 is coaxially fixed on the rotating shaft of the motor 41, and the second gear 44 is rotatably set on the rotating seat 42. The first gear 43 and the second gear 44 are meshed and connected. The second gear 44 is coaxially fixed with a rotating rod 45, and the rotating rod 45 is fixedly connected to the track 1.

[0027] The motor 41 drives the first gear 43 to rotate, and the first gear 43 drives the second gear 44 to rotate through meshing action. The second gear 44 drives the track 1 to rotate through the rotating rod 45, thereby achieving the purpose of the driving mechanism 4 driving the track 1 to rotate. In order to facilitate the user's welding and ensure that the track 1 can rotate in a circular shape, the rotating rod 45 and the track 1 need to be set at a certain height, and a certain amount of space is left at the lower end of the rotating rod 45. In this embodiment, the first gear 43, the second gear 44 and the rotating seat 42 can be used to set the motor 41 below the rotating rod 45, and the rotating seat 42 supports the second gear 44, the rotating rod 45 and the track 1. This can improve the utilization rate of the space below the rotating rod 45, improve the compactness of the utility model, and reduce the overall space occupied by the utility model.

[0028] See also Figure 2The track 1 includes an inner track 11 and an outer track 12. The centers of the inner track 11 and the outer track 12 coincide with each other. The upper ends of the inner track 11 and the outer track 12 are fixedly connected by a cover plate 13. The lower ends of the inner track 11 and the outer track 12 are fixedly connected. Both the inner track 11 and the outer track 12 are provided with clamps 2. The clamps 2 on the inner track 11 and the outer track 12 are fixedly connected by a connecting rod 21. The clamps 2 on the inner track 11 and the outer track 12 are used to clamp and fix the same pipe 3.

[0029] By simultaneously inserting and securing the pipe 3 within the two clamps 2 on the inner rail 11 and outer rail 12, the clamping and securing effect on the pipe 3 is improved, reducing the risk of the weld surface 31 of the two pipes 3 loosening during welding, leading to reduced weld quality. The two clamps 2 on the inner rail 11 and outer rail 12 are fixedly connected by a connecting rod 21. When the position of the clamp 2 within the rail 1 needs to be adjusted, the connecting rod 21 can be grasped and moved to simultaneously adjust the position of the two clamps 2. This has the advantage of simple operation and ensures that the weld surface 31 of the pipe 3 can be moved to the center of the rail 1 when the pipe 3 is simultaneously clamped in the two clamps 2.

[0030] See also Figure 4 The inner rail 11 and the outer rail 12 both include a front rail 14 and a rear rail 15 , and the clamps 2 located on the inner rail 11 and the outer rail 12 are correspondingly slidably set on the front rail 14 and the rear rail 15 .

[0031] By sliding the front and rear sides of the clamp 2 onto the front rail 14 and the rear rail 15 respectively, the stability of the clamp 2 in sliding and fixing on the rail 1 is improved, and the shaking of the clamp 2 on the rail 1, which causes the welding surfaces 31 of the two pipes 3 to be unable to fit together, is reduced, thereby ensuring the welding quality of the pipes 3.

[0032] See also Figure 4 The clamp 2 includes a sliding seat 22, a fixed clamp 23 and a movable clamp 24. The sliding seat 22 slides and can be fixedly connected to the track 1. The fixed clamp 23 is fixed on the sliding seat 22. The movable clamp 24 is slidably set on the sliding seat 22 and the movable clamp 24 is driven by the driving device in the sliding seat 22 to move closer to and away from the fixed clamp 23.

[0033] In this embodiment, the driving device can be a screw motor or an electric push rod, both of which can achieve the purpose of driving the movable clamp 24 to move along a straight line. First, the movable clamp 24 is driven away from the fixed clamp 23, and then the pipe 3 is inserted between the movable clamp 24 and the fixed clamp 23. Then, the movable clamp 24 is driven toward the fixed clamp 23 to clamp the pipe 3. The pipe 3 can be removed by driving the movable clamp 24 away from the fixed clamp 23. This has the advantage of facilitating the fixing and removal of the pipe 3 in the clamp 2.

[0034] The above contents described in this specification are merely examples of the present invention. Those skilled in the art of the present invention may make various modifications, additions, or substitute similar methods to the specific embodiments described, as long as they do not deviate from the contents of this specification or exceed the scope defined by the claims, and shall fall within the scope of protection of the present invention.

Claims

1. A butt joint for pipe welding, characterized by: It includes tracks and clamps. There are two tracks that are symmetrical on both sides and are in an arc shape. There are two groups of clamps that are respectively arranged on the two tracks. The clamps slide in an arc line along the direction of the track and can be fixedly connected to the track.

2. The pipe welding butt joint according to claim 1, characterized in that: When the clamp clamps the pipe, the welding surface of the pipe is located at the center of the track. The track is connected to a driving mechanism, which drives the track to rotate in the forward and backward directions along the center of the track.

3. The pipe welding butt joint according to claim 2, characterized in that: The driving mechanism includes a motor, a rotating seat, a first gear and a second gear. The first gear is coaxially fixed on the rotating shaft of the motor, and the second gear is rotatably set on the rotating seat. The first gear and the second gear are meshed and connected. The second gear is coaxially fixed with a rotating rod, and the rotating rod is fixedly connected to the track.

4. The pipe welding butt joint according to claim 1, characterized in that: The track includes an inner track and an outer track, the centers of the inner track and the outer track coincide, the upper ends of the inner track and the outer track are fixedly connected by a cover plate, and the lower ends of the inner track and the outer track are fixedly connected. The inner track and the outer track are both provided with clamps, and the clamps on the inner track and the outer track are fixedly connected by a connecting rod. The clamps on the inner track and the outer track are used to clamp and fix the same pipe.

5. The pipe welding butt joint according to claim 4, characterized in that: The inner track and the outer track both include a front track and a rear track, and the clamps on the inner track and the outer track are correspondingly slidably arranged on the front track and the rear track.

6. The pipe welding butt joint according to claim 1, characterized in that: The clamp includes a sliding seat, a fixed chuck and a movable chuck. The sliding seat slides and can be fixedly connected to the track. The fixed chuck is fixed on the sliding seat. The movable chuck is slidably set on the sliding seat and is driven by a driving device in the sliding seat to move closer to and away from the fixed chuck.

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