Pipeline maintenance device

Abstract

The utility model provides a pipeline maintenance device which comprises a welding gun and further comprises two frame single bodies which can be arranged on a pipeline in a sleeving mode and define a whole frame, and each frame single body is provided with two wheel carriers capable of being adjusted in the radial direction and two adjusters for adjusting the wheel carriers correspondingly. A plurality of rolling wheels distributed along a straight line are arranged on the wheel carrier, and the welding gun is adjustably mounted on one of the frame single bodies; after the rolling wheels make contact with the outer wall of the pipeline, the pipeline maintenance device can rotate around the central axis of the pipeline. According to the pipeline alignment device, an original pipeline and a replacement pipeline can be rapidly and coaxially aligned, the alignment efficiency is improved, meanwhile, the pipeline alignment device can rotate around the central axis of the pipeline during welding, and therefore the purpose of efficient and high-quality welding is achieved by aligning a welding gun with a welding seam.

Description

Technical Field

[0001] The present invention belongs to the technical field of auxiliary detection of water conservancy facilities, and particularly relates to a pipeline repair device. Background Art

[0002] As Figure 1 shown, once the main urban water supply pipeline is damaged, the municipal department needs to carry out emergency repairs in a timely manner. At the repair site, people need to close the valve of the pipeline, then use a saw to cut off the damaged part of the pipeline, then replace it with a new pipe of the same specification and the same length, and finally use welding to connect the replaced pipeline with the original pipeline.

[0003] In order to facilitate the welding of such relatively thick pipelines (diameter ≥ 400 mm), the patent with the application number 202210997270.9 discloses a pipeline welding process and a pipeline welding robot for welding with misaligned pipe joints, which are applied to pipeline repair. The pipeline welding robot in this patent can rotate around the outer wall of the pipeline for one circle, so as to achieve the purpose of welding the pipeline interface. However, before welding, this kind of welding robot needs to coaxially align and fix the two pipelines to be welded through other equipment or tools. The whole repair process is not only troublesome to operate but also may cause problems of poor welding quality due to misalignment. Summary of the Invention

[0004] The purpose of the present invention is to provide a pipeline repair device, which can not only quickly align the pipelines, but also ensure the coaxiality of the pipelines during the welding process, thereby improving the welding quality.

[0005] To achieve the above purpose, the present invention provides the following technical solution: A pipeline repair device includes a welding torch, and also includes two frame monomers that can be sleeved on the pipeline and enclose a whole frame. Two radially adjustable wheel frames and two regulators for adjusting the wheel frames are installed on each frame monomer; A number of rollers arranged in a straight line are provided on the wheel frame, and the welding torch is adjustably installed on one of the frame monomers;

[0006] After the rollers contact the outer wall of the pipeline, the pipeline repair device can rotate around the central axis of the pipeline.

[0007] Further, one end of the two frame monomers is hinged, and the other end is connected by a bolt assembly to enclose the whole frame.

[0008] Further, the frame monomer includes a number of "C"-shaped bodies arranged in a straight line and a number of screws passing through and fixing all the "C"-shaped bodies; One end of the "C"-shaped body is provided with a hinge plate for hinging, and the other end is provided with a connection hole for installing the bolt assembly.

[0009] Further, the regulator is a bolt, and a nut adapted to the regulator is installed on the frame unit, and the end of the regulator abuts against the wheel carrier.

[0010] Further, the wheel carrier is provided with a plurality of guide posts, and a plurality of linear bearings that are respectively and correspondingly assembled with the guide rods are installed on the frame unit.

[0011] Further, a return spring is arranged on the outer side of the guide post.

[0012] Further, a fixing plate is installed on one of the frame units, a support is installed on the fixing plate, a welding torch seat is installed on the support, and the welding torch is adjustably installed on the welding torch seat.

[0013] Further, the welding torch seat is a welding torch seat with adjustable degree.

[0014] Further, both the wheel carrier and the "C"-shaped body are made of channel steel.

[0015] Compared with the prior art, the beneficial effects of the present invention are as follows:

[0016] 1. The present invention can quickly align the original pipeline and the replacement pipeline coaxially, improving the alignment efficiency. At the same time, it can also rotate around the central axis of the pipeline during welding, so that the welding torch is aligned with the weld seam to achieve the purpose of efficient and high-quality welding.

[0017] 2. The rollers in the present invention can be adjusted according to the pipe diameter, so as to meet the fixing requirements of pipelines of different specifications.

[0018] 3. The welding torch in the present invention can not only be adjusted according to the pipe diameter, but also be adjusted according to the welding part, meeting the welding requirements of pipelines and components of different specifications.

[0019] 4. The present invention is simple to manufacture, made of common materials, low in cost, convenient to install and use, low in operation difficulty, and suitable for popularization and application. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 is a schematic diagram of the maintenance process after pipeline breakage in the prior art;

[0021] Figure 2 is a three-dimensional structure diagram of a preferred embodiment of the present invention;

[0022] Figure 3 is Figure 2 a partial enlarged view of I in

[0023] Figure 4 is Figure 2 a schematic diagram of the structure of another alternative example of the welding torch fixing method in

[0024] Figure 5 is Figure 2 The three-dimensional structure diagram of the middle frame monomer;

[0025] Figure 6 is Figure 2 The three-dimensional structure diagram of the shown embodiment when in use;

[0026] Figure 7 is Figure 2 The side view of the structure of the shown embodiment when in use;

[0027] Figure 8 is Figure 7 The sectional view of the structure in the A-A direction in the middle;

[0028] Figure 9 is Figure 7 The sectional view of the structure in the B-B direction in the middle;

[0029] Figure 10 is Figure 7 The sectional view of the structure in the C-C direction in the middle. Specific embodiments

[0030] The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all of them. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present invention without creative efforts shall fall within the scope of protection of the present invention.

[0031] As Figures 2 to 10 shown, the present invention provides a pipeline repair device, which includes a welding torch 5 and two frame monomers 1 that can be sleeved on the pipeline and enclose a frame as a whole.

[0032] As a preferred example, one end of the two frame monomers 1 is hinged, and the other end is connected by a bolt assembly 16, so as to enclose a frame as a whole. Before being installed on the pipeline, the two frame monomers 1 are opened outward around the hinge axis, so as to facilitate installation. After being installed on the pipeline, the other end can be fixedly connected by using the bolt assembly 16.

[0033] As a preferred example, the frame monomer 1 includes four "C"-shaped bodies 9 arranged in a straight line and eight screw rods 10 that penetrate and fix all the "C"-shaped bodies 9. One end of the "C"-shaped body 9 is provided with a hinge plate 15 for hinging, and the other end is provided with a connection hole for installing the bolt assembly 16. The four "C"-shaped bodies 9 can ensure that the frame monomer 1 has sufficient length (for example, the length ≥ 80 cm), so that after the pipeline repair device is installed on the pipeline, it can fix the original pipeline and the replacement pipeline at the same time.

[0034] The structure formed by docking two "C"-shaped bodies 9 can be a circular structure or an octagonal structure. Accordingly, the shape of the "C"-shaped body 9 is the shape of its half structure.

[0035] Two radially adjustable wheel carriers 3 and two regulators 12 for adjusting the wheel carriers 3 are installed on each frame unit 1. As a preferred example, the regulator 12 is a bolt, and a nut 11 adapted to the regulator 12 is installed on the frame unit 1. The end of the regulator 12 abuts against the wheel carrier 3. By rotating the regulator 12, its axial movement can be achieved, thereby changing the radial position of the wheel carrier 3. For pipelines with large diameters, the regulator 12 should be screwed outwards to move the roller 4 away from the center. Conversely, the regulator 12 should be screwed inwards to move the roller 4 towards the center.

[0036] As a preferred example, the wheel carrier 3 is provided with four guide posts 13, and the "C"-shaped body 9 is provided with guide post avoidance holes. Eight linear bearings that are respectively and matchedly assembled with the guide posts 13 are installed on the frame unit 1. The linear bearings are installed at the avoidance holes, and a return spring 14 is arranged outside the guide posts. The return spring 14 gives the wheel carrier 3 a tendency to move outwards.

[0037] Obviously, for the overall frame, the wheel carriers 3 and the regulators 12 are in a circumferentially evenly distributed state. Four rollers 4 are arranged on the wheel carrier 3 in a straight line. Obviously, in the same plane perpendicular to the pipeline, four rollers 4 are evenly distributed along the circumference. The number and distance of the rollers 4 are also such that both the original pipeline and the replacement pipeline can be contacted by the rollers 4 to achieve coaxial alignment. After the rollers 4 contact the outer wall of the pipeline, the pipeline repair device can be rotated around the central axis of the pipeline.

[0038] The welding torch 5 is adjustably installed on one of the frame units 1. The welding torch 5 is connected to the welding machine, and its connection method is the prior art, so it will not be elaborated. As Figure 3 shown, as a preferred example, a fixing plate 6 is installed on one of the frame units 1. Both ends of the fixing plate 6 are fixed on two adjacent screws 10. A support 7 is installed on the fixing plate 6, and a welding torch seat 8 is installed on the support 7. The welding torch seat 8 adopts an optical axis seat and has a clamping function, so as to be able to adjust the fixing position of the welding torch 5, so that the welding torch 5 can maintain a reasonable distance from the weld 2.

[0039] As Figure 4 shown, as an alternative example, the welding torch seat 8 is a welding torch seat 8 with adjustable degrees. The welding torch seat 8 includes a fixed seat body 17 and a rotating seat body 18 hingedly fixed on the fixed seat body 17. The hinge axis is a bolt 19, so as to be able to fix the angle between the rotating seat body 18 and the fixed seat body 17 and realize the adjustment of the angle of the welding torch 5. The rotating seat body 18 also has a clamping function, so as to be able to adjust the fixing position of the welding torch 5. This welding torch seat 8 with adjustable degrees can meet the welding of pipeline components such as welding flanges.

[0040] As a preferred example, both the wheel carrier 3 and the "C"-shaped body 9 are made of channel steel.

[0041] As Figures 8 - 10 shown, after the pipeline is damaged, the maintenance personnel first cut off a section of the pipeline at the damaged part, and then replace it with a replacement pipeline at the gap. Then install the pipeline maintenance device at the welding part of the pipeline, and adjust its position so that the welding torch 5 is aligned with the weld seam 2. Then control the regulator 12 so that the outer walls of the original pipeline and the replacement pipeline are both in contact with the rollers. At this time, the original pipeline and the replacement pipeline are on the same axis, realizing the coaxial alignment of the two. Then adjust the welding torch 5 to a suitable position, start the welding machine and manually rotate the pipeline maintenance device at a constant speed, and the welding torch 5 can complete the welding of the joints at both ends of the pipeline. Then complete the welding of the other joint according to the same operation to repair the pipeline. Finally, remove the pipeline maintenance device and refill the soil.

[0042] The parts not detailed in the present invention are all well-known technologies to those skilled in the art.

[0043] It should be noted that the above specific embodiments are only used to illustrate the technical solutions of the present invention and are not restrictive. Although the present invention has been described in detail with reference to the embodiments, those of ordinary skill in the art should understand that the technical solutions of the present invention can be modified and equivalently replaced without departing from the spirit and scope of the technical solutions of the present invention, and they should all be covered within the scope of the claims of the present invention.

Claims

1. A pipeline maintenance device, comprising a welding gun, characterized in that: It also includes two frame monomers that can be mounted on the pipe and enclosed to form a frame as a whole, each of the frame monomers is equipped with two radially adjustable wheel racks and two adjusters for adjusting the wheel racks respectively; the wheel racks are provided with a plurality of rollers distributed along a straight line, and the welding gun is adjustably mounted on one of the frame monomers; After the roller contacts the outer wall of the pipeline, the pipeline maintenance device can be rotated around the central axis of the pipeline.

2. A pipeline maintenance device according to claim 1, characterized in that: One end of the two frame monomers is hinged, and the other end is connected by a bolt assembly, so as to enclose the frame as a whole.

3. A pipeline maintenance device according to claim 2, characterized in that: The frame monomer includes a plurality of "C"-shaped bodies arranged in a straight line and a plurality of screw rods penetrating and fixing all the "C"-shaped bodies; a hinge plate for hinged connection is arranged at one end of the "C"-shaped body, and a connecting hole for installing the bolt assembly is arranged at the other end.

4. A pipeline maintenance device according to claim 3, characterized in that: The adjuster is a bolt, a nut matched with the adjuster is installed on the frame monomer, and the end of the adjuster is in contact with the wheel frame.

5. A pipeline maintenance device according to claim 4, characterized in that: The wheel frame is provided with a plurality of guide columns, and the frame monomer is provided with a plurality of linear bearings matched and assembled with the guide columns one by one.

6. A pipeline maintenance device according to claim 5, characterized in that: A return spring is arranged on the outer side of the guide column.

7. A pipeline maintenance device according to claim 6, characterized in that: A fixing plate is installed on one of the frame monomers, a support is installed on the fixing plate, a welding gun seat is installed on the support, and the welding gun is adjustably installed on the welding gun seat.

8. A pipeline maintenance device according to claim 7, characterized in that: The welding gun seat is an adjustable welding gun seat.

9. A pipeline maintenance device according to claim 8, characterized in that: The wheel frame and the "C"-shaped body are both made of channel steel.

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