Butt joint device for pipeline welding

Abstract

The utility model belongs to the technical field of pipeline welding, and particularly relates to a butt joint device for pipeline welding, which comprises a base, two sliding rails are fixed on the upper surface of the base at intervals, a plurality of sliding blocks, a plurality of steel wheels and a plurality of bandages are sequentially arranged above the two sliding rails from bottom to top, and the sliding blocks are in sliding connection with the adjacent sliding rails. The two adjacent steel wheels are rotatably installed on the corresponding sliding blocks in a splayed mode, the multiple steel wheels are linearly distributed above the base, binding bands are arranged above the two adjacent steel wheels, rotating forks are fixed to the two sides of the upper surface of each sliding block, the upper ends of the two rotating forks are concave, and the concave positions are rotatably connected with the adjacent steel wheels. Supporting bearings are fixed to the two sides of the steel wheel and rotationally installed at the concave position of the rotating fork. The two pipelines can be centered and aligned while being fixed, the time consumed in the preparation process of butt joint work can be shortened, and the pipelines with different pipe diameters can be conveniently and rapidly located.

Description

Technical Field

[0001] The utility model belongs to the technical field of pipeline welding, and specifically relates to a butt joint device for pipeline welding. Background Art

[0002] Pipeline laying has the characteristics of large span, large volume, and excavation along the way. In particular, the factory pipelines are set in size according to standard parts. In order to meet the construction needs, the factory pipelines are processed through steps such as measurement, cutting and welding to make pipe fittings that meet actual needs. For the welding of pipe fittings, the ports of two pipes with the same diameter are aligned and tightly connected before welding.

[0003] Since the diameter error of factory pipes is controllable, the slight convex edge of the two pipes after coaxial butt joint can be ignored. When two pipes are butt jointed, several annular clamps are opened to form two fan rings, and then put on the outside of the two pipes, and tightened with bolts to achieve the purpose of positioning.

[0004] In the existing butt jointing before pipe welding, electric cylinders are used to push the annular clamps and the clamped pipes to drive the two pipes to automatically butt together. However, the annular clamps are only suitable for pipes of one diameter. When welding pipes of different diameters, the matching annular clamps must be replaced, which increases the time-consuming preparation process for the butt jointing and is not conducive to the quick placement of pipes of different diameters. For this reason, we propose a butt jointing device for pipe welding. Utility Model Content

[0005] The purpose of the utility model is to provide a butt joint device for pipeline welding, which can center and align two pipelines while fixing them, thereby reducing the time consumption of the preparation process of the butt joint work and facilitating the quick placement of pipelines with different diameters.

[0006] The technical solutions adopted in this utility are as follows:

[0007] A pipe welding docking device comprises a base, wherein two slide rails are fixed at intervals on the upper surface of the base, and a plurality of sliders, a plurality of steel wheels and a plurality of straps are arranged above the two slide rails in sequence from bottom to top, wherein the sliders are slidably connected to the adjacent slide rails, and the two adjacent steel wheels are rotatably mounted on the corresponding sliders in an eight-shaped shape, and the plurality of steel wheels are distributed in a straight line above the base, and a strap is arranged above the two adjacent steel wheels. Before pipe welding, the spacing between the sliders is adjusted according to the length of the pipe, and then the pipe is placed horizontally between the steel wheels from above, and the two adjacent steel wheels support the lower surface of the pipe, which can drive The two pipes are centered and aligned, and the two ends are tied to the two sides of the adjacent sliders with a strap from above. The two pipes are tied tightly to fix the two pipes to the docking device, and the two pipe ports are pushed close together. Then the slider is locked. This can reduce the time spent in the preparation process for docking work, especially when replacing pipes with different diameters. The steel wheels do not need to be disassembled. The two steel wheels and straps distributed in an eight-shaped shape can adapt well to the outer circle of the pipe, which is convenient for the quick placement of pipes with different diameters. Later, when carrying out port welding, the slide rails, sliders and steel wheels have almost no shielding effect on the welding surface, greatly exposing the welding surface.

[0008] Rotating forks are fixed on both sides of the upper surface of the slider, the upper ends of the two rotating forks are concave and the concave parts are rotatably connected to adjacent steel wheels. The rotating forks are used to support the steel wheels tilted upward, so that the two adjacent steel wheels are distributed in an eight-shaped shape, so that the upper surfaces of the steel wheels can be aligned with the lower arc surfaces of pipes with different diameters, and a number of steel wheels are used to support from different positions, which is convenient for horizontal placement of the pipes, and rapid centering and alignment.

[0009] Support bearings are fixed on both sides of the steel wheel, and the support bearings are rotatably installed at the concave part of the rotating fork. The support bearings are used to support both sides of the steel wheel, which can separate the steel wheel and the rotating fork and reduce the friction between the two.

[0010] Movable buckles are hinged on both sides of the slider near the rotating fork, and two through holes are arranged on the movable buckle at intervals. One end of the adjacent strap passes through the two through holes of the movable buckle, and one end of the strap passes through the two through holes of the movable buckle, forming a folded shape. The folded part wraps around multiple parts of the movable buckle, so that the strong friction can be used to lock the strap after it is tightened, and it will not break free.

[0011] A frosted strip is fixed in the middle of the lower surface of the bandage. The frosted strip can be made of rubber material with a frosted surface. It can be deformed and pressed tightly against the surface of the pipe as the bandage is squeezed. It has good friction and can firmly hold the pipe.

[0012] One end of the slider is threaded with a locking bolt. The locking bolt is rotated forward along the thread until one end of the locking bolt is pressed against the slide rail to lock the slider under friction. Conversely, the locking bolt is reversed to disengage from the slide rail to release the locking state.

[0013] The technical effects achieved by this utility model are:

[0014] The present invention provides a practical butt joint device for pipe welding. Before pipe welding, the interval between sliders is adjusted according to the length of the pipe, and then the pipe is placed horizontally between the steel wheels from above. The two adjacent steel wheels both support the lower surface of the pipe, which can drive the two pipes to be centered and aligned. A binding belt is used to bypass the pipe from above, and the two ends are respectively tied to the two sides of the adjacent sliders. The two pipes are tied tightly, and the two pipes can be fixed to the butt joint device. The two pipe ports are pushed to be close together, and then the slider is locked, which can reduce the time consumption of the preparation process for the butt joint work, especially when replacing pipes with different diameters. The steel wheels do not need to be disassembled, and the two steel wheels and the binding belts distributed in an eight-shaped shape can well adapt to the outer circle of the pipe, which is convenient for the quick placement of pipes with different diameters. When the port welding is subsequently carried out, the slide rail, the slider and the steel wheel have almost no shielding effect on the welding surface, and the welding surface is greatly exposed. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 It is a front view of the practical docking device;

[0016] Figure 2 is a side view of the slider of the utility model;

[0017] Figure 3 is a side view of the practical binding strap;

[0018] Figure 4 It is a side view of the practical rotating fork.

[0019] In the accompanying drawings, the components represented by the reference numerals are listed as follows:

[0020] 1. Base; 2. Slide rail; 3. Slider; 4. Steel wheel; 5. Binding strap; 6. Rotating fork; 7. Support bearing; 8. Active buckle; 9. Frosted strip; 10. Locking bolt. DETAILED DESCRIPTION

[0021] In order to make the purpose and advantages of the present invention more clearly understood, the present invention is specifically described below in conjunction with the embodiments. It should be understood that the following text is only used to describe one or several specific implementations of the present invention, and does not strictly limit the scope of protection specifically requested by the present invention.

[0022] like Figure 1-4As shown, a pipe welding docking device comprises a base 1, two slide rails 2 are fixed at intervals on the upper surface of the base 1, a plurality of sliders 3, a plurality of steel wheels 4 and a plurality of straps 5 are arranged above the two slide rails 2 from bottom to top, both ends of the sliders 3 are bent into the inside of the slide groove of the slide rail 2, the sliders 3 are slidably connected with the adjacent slide rails 2, the two adjacent steel wheels 4 are rotatably installed on the corresponding sliders 3 in an eight-shaped shape, the plurality of steel wheels 4 are distributed along a straight line above the base 1, and straps 5 are arranged above the two adjacent steel wheels 4, the base 1 can be fixed to the ground near the welding device by a steel chisel, before the pipe is welded, the sliders 3 are slid along the slide rails 2, the spacing of the sliders 3 is adjusted according to the length of the pipe, so that the sliders 3 drive the steel wheels 4 to be just below the pipe, and then the pipe is placed horizontally from above The two ends of the steel wheels 5 are tied to the two sides of the adjacent sliders 3 until the two pipes are tied tightly. The two pipes can be fixed to the docking device, and the two pipe ports are pushed together at the interval between the two slide rails 2 along the slide rails 2, and then the sliders 3 are locked. This can reduce the time spent in the preparation process for docking work, especially when replacing pipes with different diameters. The steel wheels 4 do not need to be disassembled. The two steel wheels 4 and the straps 5 distributed in an eight-shaped shape can adapt well to the outer circle of the pipe, which is convenient for the quick placement of pipes with different diameters. In the subsequent port welding, the slide rails 2, sliders 3 and steel wheels 4 have almost no shielding effect on the welding surface, greatly exposing the welding surface.

[0023] For each slider 3, reference can be made to a Chinese utility model with publication number CN220718147U, which is an automatic pipe butt welding device. The slider 3 is pushed laterally by a stretching cylinder to drive the two pipes to fit tightly together, without manual movement of the pipes. This technical solution is a prior art and is not shown in the figure.

[0024] like Figure 1 , Figure 2 and Figure 4 As shown, rotating forks 6 are fixed on both sides of the upper surface of the slider 3, the upper ends of the two rotating forks 6 are concave and the concave parts are rotatably connected to the adjacent steel wheels 4, a rotating shaft is fixed axially in the middle of the steel wheel 4, and the rotating shaft is rotatably connected to the two walls of the concave part of the rotating fork 6, and the rotating fork 6 is used to support the steel wheel 4 tilted upward, so that the two adjacent steel wheels 4 are distributed in an eight-shaped shape, so that the upper surface of the steel wheel 4 can be aligned with the lower arc surface of the pipeline with different diameters, and a plurality of steel wheels 4 are supported from different positions, which is convenient for the horizontal placement of the pipeline, and quick centering and alignment.

[0025] like Figure 1 , Figure 2 and Figure 4As shown, support bearings 7 are fixed on both sides of the steel wheel 4, and the support bearings 7 are rotatably installed in the concave part of the rotating fork 6. The support bearings 7 are used to support both sides of the steel wheel 4, which can separate the steel wheel 4 and the rotating fork 6 and reduce the friction between the two. Especially when the steel wheel 4 is loaded, the support bearings 7 stably support the steel wheel 4 to prevent the steel wheel 4 from tilting.

[0026] like Figure 2 and Figure 3 As shown, movable buckles 8 are hinged at positions near the rotating fork 6 on both sides of the slider 3, and two through holes are arranged at intervals on the movable buckle 8. One end of the adjacent strap 5 passes through the two through holes of the movable buckle 8, and one end of the strap 5 passes through the two through holes of the movable buckle 8, forming a folded shape, and the folded part wraps around multiple places of the movable buckle 8, which can be locked by strong friction after the strap 5 is tightened, and will not break free, so that the strap 5 can be firmly bound to the pipeline. After welding is completed, the bending part of the strap 5 can be pushed in the opposite direction by hand to release it from the movable buckle 8 and release the locked state.

[0027] like Figure 2 and Figure 3 As shown, a frosted strip 9 is fixed in the middle of the lower surface of the bandage 5. The frosted strip 9 can be made of rubber material with a frosted surface. It can be deformed and pressed tightly against the surface of the pipe with the compression of the bandage 5. It has good friction and can firmly bite the pipe.

[0028] like Figure 1 and Figure 2 As shown, a locking bolt 10 is threadedly installed at one end of the slider 3. The locking bolt 10 is rotated forward along the thread until one end of the locking bolt 10 is pressed against the slide rail 2, thereby locking the slider 3 under the action of friction. Conversely, the locking bolt 10 is reversed to disengage from the slide rail 2 to release the locking state.

[0029] The working principle of the utility model is as follows: before welding the pipeline, slide the slider 3 along the slide rail 2, adjust the spacing of the slider 3 according to the length of the pipeline, so that the slider 3 drives the steel wheel 4 just under the pipeline, and then place the pipeline horizontally between the steel wheels 4 from above. The two adjacent steel wheels 4 both support the lower surface of the pipeline, which can drive the two pipelines to be centered and aligned. Use the binding belt 5 to bypass the pipeline from above, and tie the two ends to the two sides of the adjacent slider 3 respectively until the two pipelines are tied tightly. Then, the two pipelines can be fixed to the docking device, and the two pipeline ports are pushed along the slide rail 2 to fit tightly together at the interval position of the two slide rails 2.

[0030] Then lock the slider 3, which can reduce the time spent in the preparation process of the docking work, especially when replacing pipes with different diameters. The steel wheel 4 does not need to be disassembled, and the two steel wheels 4 and the straps 5 distributed in an eight-shaped shape can adapt well to the outer circle of the pipe, which is convenient for the quick placement of pipes with different diameters. Subsequently, the port welding is carried out, and the slide rail 2, the slider 3 and the steel wheel 4 have almost no shielding effect on the welding surface, which greatly exposes the welding surface.

[0031] The above is only a preferred embodiment of the present invention. It should be noted that, for ordinary technicians in the field, several improvements and modifications can be made without departing from the principle of the present invention, and these improvements and modifications should also be regarded as the protection scope of the present invention. The structures, devices and operating methods not specifically described and explained in the present invention shall be implemented according to the conventional means in the field unless otherwise specified and limited.

Claims

1. A butt joint device for pipe welding, comprising a base (1), characterized in that: Two slide rails (2) are fixed at intervals on the upper surface of the base (1); a plurality of sliders (3), a plurality of steel wheels (4) and a plurality of straps (5) are arranged in sequence from bottom to top above the two slide rails (2); the sliders (3) are slidably connected to adjacent slide rails (2); two adjacent steel wheels (4) are rotatably mounted on corresponding sliders (3) in an "eight" shape; the plurality of steel wheels (4) are distributed in a straight line above the base (1); and a strap (5) is arranged above the two adjacent steel wheels (4).

2. A pipe welding butt joint device according to claim 1, characterized in that: Rotating forks (6) are fixed on both sides of the upper surface of the sliding block (3); the upper ends of the two rotating forks (6) are both concave and the concave portions are rotatably connected to adjacent steel wheels (4).

3. A pipe welding butt joint device according to claim 2, characterized in that: Support bearings (7) are fixed on both sides of the steel wheel (4), and the support bearings (7) are rotatably mounted on the concave part of the rotating fork (6).

4. A pipe welding butt joint device according to claim 2, characterized in that: Both sides of the slider (3) are hinged with movable buckles (8) near the rotating fork (6), and the movable buckles (8) are provided with two through holes at intervals, and one end of the adjacent binding strap (5) passes through the two through holes of the movable buckle (8).

5. A butt joint device for pipeline welding according to claim 1, characterized in that: A frosted strip (9) is fixed in the middle of the lower surface of the binding belt (5).

6. A pipe welding butt joint device according to claim 1, characterized in that: One end of the sliding block (3) is threadedly provided with a locking bolt (10).

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