Pipe welding aid

Abstract

The utility model discloses a pipeline welding technical field's pipeline welding auxiliary device, including the first welding platform and second welding platform of same structure, and the first welding platform includes support frame and crawler machine frame, and the support frame is vertically arranged above the crawler machine frame, and the support frame is equipped with the leveling mechanism between the crawler machine frame, and the left side and right side of crawler machine frame are equipped with crawler respectively, and the drive mechanism is installed on the crawler machine frame, and the support plate is fixedly arranged on the support frame, and the upper surface of support plate is concave arc surface, and the left side and right side of support frame all are equipped with first telescopic push rod, and the one end of concave arc surface of first telescopic push rod direction support plate is fixedly equipped with arc locating part, and arc locating part and concave arc surface of support plate enclose and form a constraint structure that is tightly encircled to the circumferential side of pipeline, for limiting the up and down bounce of pipeline. The utility model solves the prior art only relies on friction to provide pipeline up and down limit, leads to the technical problem that pipeline is easy to bounce when transporting on the rugged road.

Description

Technical Field

[0001] This utility model relates to the field of pipeline welding technology, and in particular to a pipeline welding auxiliary device. Background Technology

[0002] When welding large-diameter oil or water pipelines outdoors, problems often arise such as misalignment of the pipe joints or unevenness at both ends due to terrain undulations. Traditional solutions often involve using timber or stones to elevate the pipes before welding. However, this method of support has significant drawbacks: firstly, it lacks stability, making the pipes prone to settlement or displacement during welding, directly affecting the welding quality; secondly, removing the supports after welding is difficult, time-consuming, and labor-intensive.

[0003] Chinese invention application CN116493865A discloses an all-terrain welding platform vehicle assembly, including a welding platform one and a welding platform two with identical structures. The welding platform one includes a platform base plate, on which a support frame is mounted. A clamping slide plate is slidably connected to the surface of the support frame. Two clamping plates are vertically arranged on the surface of the clamping slide plate, and a pipe is arranged between the two clamping plates. A leveling mechanism is connected to the bottom of the platform base plate. The leveling mechanism includes leveling pillars, which are located at the four vertices of the bottom of the platform base plate. The bottom of the leveling pillars is fixedly connected to a track frame. Tracks are respectively mounted on both sides of the track frame. A hydraulic motor is mounted on the surface of the track frame. The leveling mechanism also includes a ball bearing steering sleeve, a ball bearing steering shaft, and a hydraulic rod. The hydraulic rod is fixedly connected to the surface of the leveling pillar. The end of the hydraulic rod away from the leveling pillar is fixedly connected to the ball bearing steering shaft. The ball bearing steering sleeve is movably sleeved on the surface of the ball bearing steering shaft and is fixedly connected to the bottom of the platform base plate.

[0004] When the aforementioned platform vehicle transports pipelines on rough terrain, the vertically positioned clamping plates primarily provide lateral restraint, while the pipeline's vertical movement relies solely on friction, making it prone to bouncing. If the pipeline fails to return to its original position due to friction after bouncing, it will arrive at the welding position in an undesirable posture with one end tilted up and the other end sunken. Although theoretically the welding platform can be tilted to match the pipeline's posture and achieve "pipeline leveling" by adjusting the leveling mechanism, this operation poses a serious safety hazard: during platform tilting, the pipeline relies solely on friction restraint, making it susceptible to slippage or even falling due to changes or insufficient friction. Therefore, in practice, welders must first loosen the clamping plates at the welding position, wait for the pipeline to automatically return to a stable state under gravity, then re-clamp them, and finally use the leveling mechanism to adjust the platform's level and achieve precise alignment. While this "loosen-reset-clamp" operation process avoids safety risks and ensures docking accuracy, it increases the complexity and time cost of the operation. Utility Model Content

[0005] To address the technical problem that existing clamping mechanisms rely solely on friction to provide upper and lower limits for pipe movement, leading to pipe jumping during transport on rough roads, this utility model provides a pipe welding auxiliary device.

[0006] The technical solution adopted by this utility model to solve its technical problem is: A pipe welding auxiliary device is provided, comprising a first welding platform and a second welding platform with identical structures. The first welding platform includes a support frame and a track frame. The support frame is vertically mounted above the track frame. A leveling mechanism is provided between the support frame and the track frame for adjusting the levelness of the support frame. Tracks are respectively installed on the left and right sides of the track frame. A drive mechanism for driving the track movement is installed on the track frame. A support plate is fixedly mounted on the support frame. The upper surface of the support plate is a concave arc-shaped surface. First telescopic push rods are provided on both the left and right sides of the support frame. An arc-shaped positioning part is fixedly provided at one end of the first telescopic push rod pointing towards the concave arc-shaped surface of the support plate. The arc-shaped positioning part and the concave arc-shaped surface of the support plate together form a constraint structure that tightens around the pipe to limit the vertical movement of the pipe.

[0007] Furthermore, the leveling mechanism includes at least three second telescopic push rods, which are disposed between the support frame and the track frame. The lower end of the second telescopic push rod is fixedly connected to the track frame, and the upper end of the second telescopic push rod is spherically hinged to the support frame.

[0008] Furthermore, there are four second telescopic push rods, which are arranged in a rectangular pattern at the four corners of the track frame.

[0009] Furthermore, both the first and second telescopic push rods are electrically powered.

[0010] Furthermore, multiple anti-slip strips are provided on the concave arc surface.

[0011] Furthermore, the end of the first telescopic push rod furthest from the arc-shaped positioning part is rotatably connected to the support frame.

[0012] Furthermore, a rotating shaft is fixedly installed on the support frame and is horizontally arranged in the front-to-back direction. A bearing is installed at the end of the first telescopic push rod away from the arc-shaped positioning part. The bearing is sleeved and fixed on the rotating shaft, and the first telescopic push rod can rotate around the central axis of the rotating shaft.

[0013] Furthermore, the drive mechanism is a hydraulic motor or an electric motor, and the output end of the drive mechanism is connected to a drive wheel, which is located inside the track.

[0014] The beneficial effects of this utility model are: This utility model solves the problem of pipe jumping during transportation by setting a support plate on a support frame. The upper surface of the support plate is a concave arc surface. The left and right sides of the support frame are provided with first telescopic push rods. An arc-shaped positioning part is fixedly set at the end of the first telescopic push rod pointing to the concave arc surface of the support plate. The arc-shaped positioning part and the concave arc surface of the support plate form a constraint structure that tightens around the pipe. The rigid mechanical limit replaces friction fixation, which solves the problem of pipe jumping during transportation and improves operational safety and efficiency. Attached Figure Description

[0015] Figure 1 This is a schematic diagram of the pipe welding auxiliary device of this utility model; Figure 2 This is a structural schematic diagram of the pipe welding auxiliary device of this utility model from another perspective; The markings in the diagram are as follows: 1-support frame, 2-track frame, 3-track, 4-drive mechanism, 5-support plate, 6-first telescopic push rod, 7-arc-shaped positioning part, 8-second telescopic push rod, 9-rotating shaft, 10-bearing, 11-drive wheel. Detailed Implementation

[0016] To make the objectives, technical solutions, and advantages of the embodiments of this application clearer, the present invention will be further described below with reference to the accompanying drawings.

[0017] First, it should be stated that the technical solutions of the embodiments of this application are clearly and completely described. The described embodiments are only some of the embodiments of this application, and not a limitation of this utility model. All other embodiments obtained by those skilled in the art based on the embodiments of this application without creative effort are within the scope of protection of this application.

[0018] In the description of this utility model, it should be understood that the terms "first", "second", "upper", "lower", "left", "right", "inner", "outer", "axial" or "radial" indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings. They are only for the convenience of describing this utility model and are not intended to indicate or imply that the device or element referred to must have a specific orientation structure and operation. Therefore, they should not be construed as limitations on this utility model.

[0019] Reference Figure 1 and Figure 2 This utility model provides a pipe welding auxiliary device.

[0020] like Figure 1 and Figure 2As shown, a pipe welding auxiliary device is provided, including a first welding platform and a second welding platform with identical structures. The first welding platform includes a support frame 1 and a track frame 2. The support frame 1 is vertically arranged above the track frame 2. A leveling mechanism is provided between the support frame 1 and the track frame 2 for adjusting the levelness of the support frame 1. Tracks 3 are respectively installed on the left and right sides of the track frame 2. A drive mechanism 4 for driving the track 3 is installed on the track frame 2. A support plate 5 is fixedly arranged on the support frame 1. The upper surface of the support plate 5 is a concave arc surface. A first telescopic push rod 6 is provided on both the left and right sides of the support frame 1. An arc-shaped positioning part 7 is fixedly arranged at one end of the first telescopic push rod 6 pointing towards the concave arc surface of the support plate 5. The arc-shaped positioning part 7 and the concave arc surface of the support plate 5 together form a constraint structure that tightens around the pipe to limit the vertical movement of the pipe.

[0021] A leveling mechanism is provided between the support frame 1 and the track frame 2. This leveling mechanism can employ existing, known technologies. Preferably, the leveling mechanism includes at least three second telescopic push rods 8, which are positioned between the support frame 1 and the track frame 2. The lower end of each second telescopic push rod 8 is fixedly connected to the track frame 2, typically by welding, but bolts can also be used. The upper end of each second telescopic push rod 8 is spherically hinged to the support frame 1. The spherical hinge can refer to existing spherical hinge methods. For example, a ball bearing rotating shaft is fixedly mounted at one end of each second telescopic push rod 8, and a corresponding ball bearing rotating sleeve is fixedly mounted on the support frame 1. The ball bearing rotating sleeve movably fits onto the surface of the ball bearing rotating shaft, allowing the support frame 1 and the second telescopic push rod 8 to be spherically hinged, thus achieving a wider range of rotation angles. When the first and second welding platforms are in uneven outdoor terrain, the levelness of the first and second welding platforms can be adjusted by adjusting the second telescopic push rods 8. Of course, a commercially available spherical hinge structure can also be used to allow for a greater range of rotation between the support frame 1 and the second telescopic push rod 8, so as to ensure 360° adjustment of the first welding platform and the second welding platform, which can adapt to the leveling treatment of the first welding platform and the second welding platform in the forward, backward, left, right or in between two directions on rough ground.

[0022] For the drive mechanism 4, a hydraulic motor or an electric motor can be selected. Preferably, drive mechanisms 4 are provided on both the left and right sides of the track frame 2. The left and right drive mechanisms 4 can be independently controlled in terms of rotational speed, relying on the differential movement of the left and right tracks 3 to achieve the steering of the first and second welding platforms. Of course, to achieve this, a controller (not shown) should also be provided to control the rotational speed of the drive mechanisms 4 on the left and right sides of the track frame 2. The controller is a known controller in the prior art; this invention does not involve improvements to the computer program. The controller can also control the telescopic movement of the first telescopic push rod 6 and the second telescopic push rod 8.

[0023] like Figure 1 and Figure 2 As shown, the end of the first telescopic push rod 6 furthest from the arc-shaped positioning part 7 is preferably rotatably connected to the support frame 1, but it can also be fixedly connected, for example, by welding or bolting. The arc-shaped positioning part 7 is fixedly connected to one end of the first telescopic push rod 6, which can be welded, integrally formed, or bolted. For the rotatable connection between the end of the first telescopic push rod 6 furthest from the arc-shaped positioning part 7 and the support frame 1, preferably, a rotating shaft 9 horizontally arranged in the front-rear direction is fixedly provided on the support frame 1, and a bearing 10 is provided at the end of the first telescopic push rod 6 furthest from the arc-shaped positioning part 7. The bearing 10 is sleeved and fixed on the rotating shaft 9, allowing the first telescopic push rod 6 to rotate around the central axis of the rotating shaft 9. Alternatively, a hinged support can be provided on the support frame 1, with one end of the first telescopic push rod 6 hinged to the hinged support, allowing it to rotate around the horizontal axis in the front-rear direction.

[0024] like Figure 1 and Figure 2 As shown, the curvature dimensions of the concave arc surface and the arc-shaped positioning part 7 can be adaptively designed according to actual working conditions, such as the specific pipe diameter. Preferably, the curvature dimensions of the concave arc surface and the arc-shaped positioning part 7 are the same as the outer diameter of the pipe, so that the constraint structure formed by the enclosure fits as closely as possible to the outer periphery of the pipe, improving the fixing effect. Of course, the curvature dimensions of the concave arc surface and the arc-shaped positioning part 7 can also be slightly larger than the outer diameter of the pipe, which can also achieve enclosure fixing, but the contact area will be reduced.

[0025] To improve the fixing effect between the concave arc surface and the pipe, multiple anti-slip strips can be installed on the concave arc surface to improve the anti-slip performance. The multiple anti-slip strips can be installed side by side at intervals in the front-back direction, or the multiple anti-slip strips can be installed in an alternating manner.

[0026] like Figure 1 and Figure 2 As shown, the preferred number of second telescopic push rods 8 is four, arranged in a rectangular pattern at the four corners of the track frame 2. The telescopic movement of the four second telescopic push rods 8 should be independently controlled, allowing for individual adjustment of the height of any one of them. This ensures that the first and second welding platforms can be adjusted to be horizontal when tilted in either direction. Alternatively, three or more can be used. For example, with three push rods, the three second telescopic push rods 8 are arranged in a triangular pattern, ensuring the support frame 1 remains horizontal. With only one or two push rods, the support frame 1 would be difficult to keep horizontal and would naturally tilt under gravity.

[0027] For the first telescopic push rod 6 and the second telescopic push rod 8, electric telescopic push rods are preferred, but hydraulic telescopic push rods or cylinder-driven telescopic push rods can also be used.

[0028] like Figure 1 and Figure 2 As shown, one embodiment of how the drive mechanism 4 drives the track 3 is as follows: the drive mechanism 4 is a hydraulic motor or an electric motor, and a drive wheel is connected to the output end of the drive mechanism 4. The drive wheel is located inside the track 3. Optionally, a pulley can be fixedly installed at the output end of the drive mechanism 4, with a transmission wheel coaxially arranged on the drive wheel. The drive wheel and the transmission wheel are fixed together by a connecting shaft, and a belt is wound around the pulley and the transmission wheel, thus achieving transmission. Alternatively, conventional sprockets and chains, or other existing feasible transmission methods, can also be used.

Claims

1. A pipe welding auxiliary device, comprising a first welding platform and a second welding platform with identical structures, the first welding platform comprising a support frame (1) and a track frame (2), the support frame (1) being vertically positioned above the track frame (2), a leveling mechanism being provided between the support frame (1) and the track frame (2) for adjusting the levelness of the support frame (1), tracks (3) being installed on the left and right sides of the track frame (2), and a drive mechanism (4) for driving the tracks (3) to move being installed on the track frame (2), characterized in that, A support plate (5) is fixedly installed on the support frame (1). The upper surface of the support plate (5) is a concave arc surface. A first telescopic push rod (6) is installed on both the left and right sides of the support frame (1). An arc-shaped positioning part (7) is fixedly installed at one end of the first telescopic push rod (6) pointing to the concave arc surface of the support plate (5). The arc-shaped positioning part (7) and the concave arc surface of the support plate (5) together form a constraint structure that is tight around the pipe, which is used to limit the pipe from jumping up and down.

2. The pipe welding auxiliary device as described in claim 1, characterized in that, The leveling mechanism includes at least three second telescopic push rods (8). The second telescopic push rods (8) are located between the support frame (1) and the track frame (2). The lower end of the second telescopic push rod (8) is fixedly connected to the track frame (2), and the upper end of the second telescopic push rod (8) is spherically hinged to the support frame (1).

3. The pipe welding auxiliary device as described in claim 2, characterized in that, There are four second telescopic push rods (8), which are arranged in a rectangular shape at the four corners of the track frame (2).

4. The pipe welding auxiliary device as described in claim 2, characterized in that, Both the first telescopic push rod (6) and the second telescopic push rod (8) are electric push rods.

5. The pipe welding auxiliary device as described in claim 1, characterized in that, Multiple anti-slip strips are provided on the concave arc surface.

6. The pipe welding auxiliary device as described in claim 1, characterized in that, The end of the first telescopic push rod (6) away from the arc-shaped positioning part (7) is rotatably connected to the support frame (1).

7. The pipe welding auxiliary device as described in claim 6, characterized in that, A rotating shaft (9) is fixedly installed on the support frame (1) and is horizontally arranged in the front-to-back direction. A bearing (10) is provided at the end of the first telescopic push rod (6) away from the arc-shaped positioning part (7). The bearing (10) is sleeved and fixed on the rotating shaft (9). The first telescopic push rod (6) can rotate around the central axis of the rotating shaft (9).

8. The pipe welding auxiliary device as described in claim 1, characterized in that, The drive mechanism (4) is a hydraulic motor or an electric motor. The output end of the drive mechanism (4) is connected to a drive wheel (11), which is located inside the track (3).

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