Rail-mounted plasma cutting device for large pipes

Abstract

The utility model relates to a cutting equipment, specifically a track type plasma cutting device of large pipeline. The technical scheme comprises a travelling trolley equipped with a plasma cutting torch and a motor, the travelling trolley is driven by the motor, further comprises a flexible steel rail assembly, the flexible steel rail assembly comprises a flexible rail base plate tightly covered on the pipeline along the circumferential direction of the pipeline, two annular flexible steel rails for guiding the wheels of the travelling trolley are arranged on the flexible rail base plate, a chain is sleeved on the flexible rail base plate between the two flexible steel rails, and the motor output end of the travelling trolley is provided with a sprocket engaged with the chain. The utility model has the advantages of high operation efficiency, time and labor saving, safety reliability, good flexible adaptability and high cutting precision, and is especially suitable for large long-distance pipelines with a diameter of more than 813mm.

Description

Technical Field

[0001] This utility model relates to a cutting device, specifically a track-type plasma cutting device for large pipelines. Background Technology

[0002] Plasma cutting equipment is used for pipe cutting in long-distance pipelines. Its cutting speed is much higher than that of traditional manual or mechanical cutting methods. It has the advantages of high cutting accuracy, high production efficiency, and shortened production cycle.

[0003] For example, CN202411574480.2 discloses a pipe cutting device and method for laying thermal pipelines, including a ring rail assembly and a railcar. The ring rail assembly is arranged around the outer wall of the thermal pipeline, and the railcar moves along the ring rail assembly. Because the ring rail assembly needs to be fixed to the outer wall of the thermal pipeline by clamping, the installation process is relatively complex. In addition, this ring rail assembly has the characteristics of high overall rigidity and heavy weight in order to support the railcar, which is only suitable for cutting smaller-sized pipelines and not suitable for cutting large-sized long-distance pipelines located in the field.

[0004] For example, CN202322012389.9 discloses a magnetic pipeline plasma cutting machine, which utilizes a magnetic carriage to move along the circumference of the pipeline while the cutting device on the magnetic carriage completes the cutting of the pipeline, suitable for large-size long-distance pipelines. However, this magnetic carriage is relatively heavy and is prone to deviation when moving on the pipeline, directly affecting the cutting accuracy. It is only suitable for magnetic pipelines and not for other non-magnetic pipelines, and the cutting position distance and angle cannot be flexibly adjusted.

[0005] Therefore, it is hoped that the current long-distance pipeline projects still face problems such as inconvenient installation and operation, poor precision, insufficient safety, poor flexibility, high dependence on manual labor, and low work efficiency when cutting pipelines. Summary of the Invention

[0006] The purpose of this utility model is to solve the above-mentioned technical problems and provide a track-type plasma cutting device for large pipelines that is simple to operate, saves time and effort, has high work efficiency, good flexibility and adaptability, high cutting precision, and is easy to disassemble and assemble.

[0007] This novel track-type plasma cutting device for large pipelines includes a traveling trolley equipped with a plasma cutting torch and a motor. The traveling trolley is driven by the motor and also includes a flexible steel rail assembly. The flexible steel rail assembly includes a flexible rail base plate that is tightly wrapped around the pipeline along its circumference. The flexible rail base plate is provided with two annular flexible steel rails that guide the wheels of the traveling trolley. A chain is fitted around the flexible rail base plate between the two flexible steel rails. The output end of the motor of the traveling trolley is provided with a sprocket that meshes with the chain.

[0008] The flexible track base plate between the two flexible steel rails is also provided with a chain guide groove, and the chain is located in the chain guide groove.

[0009] The wheels of the trolley have annular grooves, and the flexible rails are protrusions corresponding to the grooves.

[0010] The flexible track substrate is fixed at the overlap after it is wrapped around the circumference of the pipe by a track fixing clip.

[0011] The plasma cutting torch is fixed to the traveling trolley via a telescopic assembly.

[0012] The telescopic assembly includes a fixed rod and a telescopic rod. The fixed rod is fixed on the traveling trolley. The front section of the fixed rod is connected to the rear section of the telescopic rod via a connecting clamp. The front section of the telescopic rod is equipped with a plasma cutting torch.

[0013] The front section of the telescopic rod is connected to the plasma cutting torch via an angle adjustment assembly.

[0014] The angle adjustment assembly includes an arc-shaped angle guide rail installed at the front of the telescopic rod. The middle section of the plasma cutting torch is bolted to the front of the telescopic rod and is located at the center of the arc. The upper section is connected to the angle guide rail via positioning bolts.

[0015] An angle gauge is provided on the angle guide rail.

[0016] Beneficial effects: Flexible steel rail components are used to guide the stable movement of the trolley. The flexible rail base is made of deformable thin steel material, which can be easily covered on the outer wall of the pipe to provide a base for the trolley to move. Flexible steel rails are set on the flexible rail base to guide the wheels of the moving trolley, improving the stability and accuracy of the movement and cutting. Furthermore, chain guide grooves are set on the flexible rail base to guide the chain used for transmission, ensuring that the cutting seam does not miss the edge, improving cutting accuracy and avoiding damage to the pipe.

[0017] The plasma cutting torch is fixed to the traveling trolley via a telescopic assembly. The cutting position of the plasma cutting torch can be flexibly controlled through the telescopic assembly. The fixed rod and the telescopic rod are connected together by a clamp. The extension length of the telescopic rod can be flexibly adjusted by loosening the adjusting bolt of the clamp. The angle adjustment assembly can adjust the cutting angle of the plasma cutting torch. The angle guide rail guides the angle adjustment of the plasma cutting torch, and the angle ruler controls the appropriate angle. The above structure is simple and easy to operate.

[0018] 3) The traveling trolley is driven by a motor through sprockets and chains. Each component has a simple structure, is easy to operate, and is lightweight. It meets the needs of quick assembly and disassembly during field operations. It has the advantages of high work efficiency, time and labor saving, safety and reliability, good flexibility and adaptability, and high cutting accuracy. It is especially suitable for large long-distance pipelines with a diameter of 813mm or more. Attached Figure Description

[0019] Figure 1 This is a schematic diagram of the structure of this utility model.

[0020] Figure 2 This is a partial installation diagram of a plasma cutting torch.

[0021] Figure 3 This is a diagram showing the usage state of this utility model.

[0022] Among them, 1-traveling trolley, 1.1-wheel, 2-motor, 3-sprocket, 4-fixed rod, 5-chain, 6-connecting clamp, 7-telescopic rod, 8-angle guide rail, 9-flexible steel rail, 10-track fixing clip, 11-pipe, 12-plasma cutting torch, 13-angle ruler, 14-chain guide groove, 15-flexible track base plate, 16-groove, 17-bolt, 18-positioning bolt. Detailed Implementation

[0023] The following is in conjunction with the appendix Figure 1 The principles and features of this utility model are described below. The examples given are for illustrative purposes only and are not intended to limit the scope of this utility model. The utility model is described more specifically in the following paragraphs by way of example with reference to the accompanying drawings. The advantages and features of this utility model will become clearer from the following description and claims. It should be noted that the drawings are in a very simplified form and use non-precise proportions, and are only used to facilitate and clarify the illustration of the embodiments of this utility model.

[0024] It should be noted that when a component is described as "fixed to" another component, it can be directly on the other component or may have a component in between. When a component is considered "connected to" another component, it can be directly connected to the other component or may have a component in between. When a component is considered "set on" another component, it can be directly set on the other component or may have a component in between. The terms "vertical," "horizontal," "left," "right," and similar expressions used in this document are for illustrative purposes only.

[0025] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention pertains. The terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention. The term "and / or" as used herein includes any and all combinations of one or more of the associated listed items.

[0026] See Figure 1 This utility model includes a traveling trolley 1 and a flexible steel rail assembly. The traveling trolley 1 is equipped with a plasma cutting torch 12 and a motor 2, and the traveling trolley 1 is driven by the motor 2. The flexible steel rail assembly includes a flexible track substrate 15 that is tightly wrapped around the pipe 11 along the circumference of the pipe 11. The flexible track substrate 15 is made of a thin steel plate with a thickness of 1mm, which can be conveniently and tightly wrapped according to the shape of the pipe 14. After wrapping around the pipe 14, the overlapping part of the rear end is fixed by a track fixing clip 10.

[0027] The flexible track base plate 15 is provided with two parallel flexible steel rails 9 (such as those made of 0.5-1mm thin stainless steel plate) for guiding the wheels of the traveling trolley 1. A chain 5 is fitted around the flexible track base plate 15 between the two flexible steel rails 9. The motor output end of the traveling trolley 1 is provided with a sprocket 3 that meshes with the chain 5. The flexible track base plate 15 between the two flexible steel rails 9 is also provided with a chain guide groove 14 (such as those made of 0.5-1mm thin stainless steel plate), and the chain 5 is located in the chain guide groove 14. Specifically, the wheels 1.1 of the traveling trolley 1 have annular grooves 16, and the flexible steel rails 9 are protrusions corresponding to the grooves 16.

[0028] In another embodiment, the difference is that the plasma cutting torch 12 is fixed to the traveling trolley 1 via a telescopic assembly; the telescopic assembly includes a fixed rod 4 and a telescopic rod 7, the fixed rod 4 is fixed to the traveling trolley 1, the front section of the fixed rod 4 is connected to the rear section of the telescopic rod 7 via a connecting clamp 6, and the front section of the telescopic rod 7 is equipped with the plasma cutting torch 12.

[0029] See Figure 2 In another embodiment, the difference is that the front section of the telescopic rod 7 is connected to the plasma cutting torch 12 via an angle adjustment assembly. The angle adjustment assembly includes an arc-shaped angle guide rail 8 installed on the front section of the telescopic rod 7. The middle section of the plasma cutting torch 12 is bolted to the front section of the telescopic rod 7 and is located at the center of the arc. The upper section is connected to the angle guide rail 8 via a positioning bolt 18. An angle gauge 13 is provided on the angle guide rail 8.

[0030] Working principle: Before cutting, loosen the connecting clamp 6 and adjust the extension of the telescopic rod 7 to a certain length to extend the plasma cutting torch 12 to the predetermined position. Loosen the bolt 17 in the middle section and the positioning bolt 18 in the rear section of the plasma cutting torch 12 so that it can rotate with bolt 17 as the center. Adjust the angle of the plasma cutting torch 12 according to the cutting bevel requirements and check it with an angle gauge 13. After confirming the position, lock the positioning bolt 18 and bolt 17 to fix the plasma cutting torch 12. The motor 2 of the trolley 1 drives the sprocket 3 to rotate, which drives the wheels 1.2 of the trolley 1 to move along the flexible steel rail 9 through the chain 5. The chain guide groove 14 guides the chain 5. At the same time, the plasma cutting torch 12 is started to cut the pipe.

Claims

1. A track-type plasma cutting device for large pipelines, comprising a traveling trolley equipped with a plasma cutting torch and a motor, the traveling trolley being driven by the motor, characterized in that, It also includes a flexible rail assembly, which includes a flexible rail base plate that is tightly wrapped around the pipe along the circumference of the pipe. The flexible rail base plate is provided with two annular flexible rails that guide the wheels of the traveling trolley. A chain is fitted on the flexible rail base plate between the two flexible rails. The motor output end of the traveling trolley is provided with a sprocket that meshes with the chain.

2. The track-type plasma cutting device for large pipelines as described in claim 1, characterized in that, The flexible track base plate between the two flexible steel rails is also provided with a chain guide groove, and the chain is located in the chain guide groove.

3. The track-type plasma cutting device for large pipelines as described in claim 1, characterized in that, The wheels of the trolley have annular grooves, and the flexible rails are protrusions corresponding to the grooves.

4. The track-type plasma cutting device for large pipelines as described in claim 1, characterized in that, The flexible track substrate is fixed at the overlap after it is wrapped around the pipe circumferentially by a track fixing clip.

5. The track-type plasma cutting device for large pipelines as described in any one of claims 1-4, characterized in that, The plasma cutting torch is fixed to the traveling trolley via a telescopic assembly.

6. The track-type plasma cutting device for large pipelines as described in claim 5, characterized in that, The telescopic assembly includes a fixed rod and a telescopic rod. The fixed rod is fixed on the traveling trolley. The front section of the fixed rod is connected to the rear section of the telescopic rod via a connecting clamp. The front section of the telescopic rod is equipped with a plasma cutting torch.

7. The track-type plasma cutting device for large pipelines as described in claim 6, characterized in that, The front section of the telescopic rod is connected to the plasma cutting torch via an angle adjustment assembly.

8. The track-type plasma cutting device for large pipelines as described in claim 7, characterized in that, The angle adjustment assembly includes an arc-shaped angle guide rail installed at the front of the telescopic rod. The middle section of the plasma torch is bolted to the front of the telescopic rod and located at the center of the arc. The upper section is connected to the angle guide rail by positioning bolts.

9. The track-type plasma cutting device for large pipelines as described in claim 8, characterized in that, An angle gauge is provided on the angle guide rail.

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