Pipeline self-adaptive chain type cutting device

Abstract

The utility model discloses a pipeline self-adaptive chain type cutting device, and belongs to the technical field of cutting control. Comprising a hydraulic motor which is connected with a speed reducer and provides power for the speed reducer. The speed reducer is installed on an adjusting plate through a support in the adjusting assembly, a telescopic mold spring is arranged between the adjusting plate and the bottom plate, a pull rod is sleeved with the mold spring, and the upper end and the lower end of the pull rod are connected with the adjusting plate and the bottom plate respectively; trundles are arranged on the lower end face of the bottom plate and placed on the pipeline. An output shaft of the speed reducer is connected with a gear, a chain is mounted on the gear, and the other end of the chain is hooped on the pipeline; a tool bit is installed on the upper end face of the bottom plate through a connecting assembly, and the pipeline can be cut through abrasive water jet. According to the chain type pipeline cutting machine, the mold spring is used, the chain length and the chain tensioning degree actually needed by the chain type pipeline cutting machine are adjusted in a self-adaptive mode according to the pipeline curvature radius and the curved surface flatness condition, and it is guaranteed that the cutting process and quality are safe and reliable under the flammable and explosive dangerous environment condition.

Description

Technical Field

[0001] This utility model relates to the field of cutting control technology, specifically to a pipe adaptive chain-type cutting device. Background Technology

[0002] In oil and gas environments, abrasive waterjet cutting of pipelines often uses chains to tightly bind the cutting device to the pipeline to be cut, and then uses abrasive waterjet to cut the pipeline. However, if the pipeline is deformed into an ellipse or has an uneven curved surface, problems may arise such as the chain breaking or being too loosely tensioned, and the cutting path deviating, causing the cut to not return to the starting point after cutting around the pipe.

[0003] Existing chain-type pipe cutting machines, after adjusting the tension of the chain before cutting begins, cannot adapt to changes in the required chain length when the pipe deforms into an elliptical or uneven surface during the cutting process.

[0004] Therefore, it is necessary to develop a pipe adaptive chain-type cutting device to solve the above problems. Utility Model Content

[0005] The purpose of this invention is to provide a pipe adaptive chain-type cutting device that can adaptively adjust the actual required chain length and chain tension when the pipe is deformed or uneven.

[0006] To achieve the above objectives, this utility model provides the following technical solution:

[0007] An adaptive chain-type pipe cutting device includes a hydraulic motor connected to a reducer to provide power to the reducer; the reducer is mounted on an adjusting plate via a bracket in an adjusting assembly; a retractable mold spring is provided between the adjusting plate and a base plate, the mold spring being sleeved on a pull rod, the upper and lower ends of the pull rod being connected to the adjusting plate and the base plate respectively; a caster is provided on the lower end face of the base plate, and the caster is placed on the pipe; a gear is connected to the output shaft of the reducer, a chain is mounted on the gear, and the other end of the chain is clamped to the pipe; a cutter head is mounted on the upper end face of the base plate via a connecting assembly, enabling the pipe to be cut using an abrasive water jet.

[0008] Specifically, the hydraulic motor is connected to the hydraulic pump, which serves as the driving force source and controls the rotation direction and speed of the hydraulic motor.

[0009] Specifically, the adjustment assembly includes a bracket, an adjustment plate, an adjustment bolt, a base plate, a mold spring, and a pull rod. A mold spring is provided between the adjustment plate and the base plate, and the mold spring is fitted onto the pull rod. The lower end of the pull rod is threaded and bolted to the base plate. A cylindrical boss is provided at the upper end of the pull rod, the diameter of which is larger than the diameter of the hole in the adjustment plate. A smaller diameter cylindrical boss with an internal hexagonal groove is located above the center of the cylindrical boss. The pull rod passes through the hole in the adjustment plate and is threaded to the base plate. Rotating the internal hexagonal groove screws the pull rod into the base plate, thus fixing the pull rod to the base plate. A screw hole is provided between the adjustment plate and the base plate, through which the adjustment bolt can pass.

[0010] Specifically, both the adjusting plate and the base plate are H-shaped structures. After the gear is installed on the reducer, it is ensured that the gear is located in the middle of the H-shaped structure of the adjusting plate and the base plate.

[0011] Specifically, the adjustment assembly is equipped with an external hexagonal adjustment bolt. Rotating the adjustment bolt clockwise causes it to act on the adjustment plate, which compresses the mold spring. This allows for the cutting of the open chain based on the required chain length for binding the chain-type cutting device and the pipe to be cut when the mold spring is compressed. After the ring-type chain-type cutting device and the open chain of the pipe to be cut are engaged in the state of the mold spring being compressed, rotating the adjustment bolt counterclockwise causes the mold spring to extend, thereby tightening the chain and ensuring a tight binding between the chain-type cutting device and the pipe to be cut.

[0012] Specifically, the connecting assembly includes a cutter head mounting base, a cutter bar, and a cutter bar seat. The cutter bar seat is fixedly mounted on the base plate, and the cutter bar is mounted on the cutter bar seat to ensure that the cutter bar is parallel to the base plate. The cutter head is fixed to the cutter bar through the cutter head mounting base to ensure that the cutter head forms a suitable angle with the surface of the pipe to be cut.

[0013] Specifically, the cutter bar is L-shaped, with its two ends connected to a cutter bar seat and a cutter head mounting seat, respectively. The horizontal bar of the cutter bar is adjustable in position within the cutter bar seat to adjust the horizontal position of the cutter head. The cutter head mounting seat is adjustable on the vertical bar of the cutter bar to adjust the distance between the cutter head and the surface of the pipe to be cut.

[0014] Specifically, the middle part of the cutter head mounting base is provided with a through-hole connecting a triangular prism and a cylindrical opening, and the through-hole is used to install and fix the cutter bar or cutter head.

[0015] Specifically, the base plate, tool holder, tool head, tool head mounting base, and tool holder are all made of non-ferrous metal alloy, and do not produce sparks upon collision.

[0016] Specifically, the gears and casters are made of non-ferrous metal alloys or polymer materials to ensure that no sparks are generated during a collision.

[0017] The beneficial effects of this utility model are as follows:

[0018] This application utilizes a mold spring to adaptively adjust the chain length and tension of the chain-type pipe cutter according to the pipe's curvature radius and surface flatness. This solves problems such as chain breakage or excessive tension during non-circular pipe cutting, and deviation of the cutting path causing the cut to fail to return to the starting point after one loop around the pipe. This ensures the safety and reliability of the cutting process and quality under flammable and explosive hazardous environments.

[0019] The above description is only an overview of the technical solution of this utility model. In order to better understand the technical means of this utility model and to implement it in accordance with the contents of the specification, the preferred embodiments of this utility model are described in detail below with reference to the accompanying drawings. Attached Figure Description

[0020] Figure 1 This is a top view of a pipe adaptive chain-type cutting device disclosed in this utility model;

[0021] Figure 2 This is a right view of a pipe adaptive chain-type cutting device disclosed in this utility model;

[0022] Figure 3 These are the top and left views of the adjustment plate of this utility model;

[0023] Figure 4 These are the top view and left view of the base plate of this utility model;

[0024] Figure 5 These are the front view and left view of the bracket of this utility model;

[0025] Figure 6 This is a top view of the bracket of this utility model;

[0026] Figure 7 These are the front view and top view of the tool holder of this utility model;

[0027] Figure 8 These are the front and left views of the cutter head mounting base of this utility model.

[0028] Reference numerals in the attached diagram: 1. Hydraulic motor; 2. Reducer; 3. Gear; 4. Adjusting plate; 5. Caster; 6. Cutter head mounting base; 7. Tie rod; 8. Bracket; 9. Adjusting bolt; 10. Cutter bar; 11. Cutter head; 12. Mold spring; 13. Base plate; 14. Cutter bar seat. Detailed Implementation

[0029] The technical solution of this utility model will now be clearly and completely described with reference to the accompanying drawings. Obviously, the described embodiments are only some, not all, of the embodiments of this utility model. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this utility model.

[0030] In the description of this utility model, it should be noted that the terms "center," "upper," "lower," "left," "right," "vertical," "horizontal," "inner," and "outer," etc., indicating the orientation or positional relationship, are based on the orientation or positional relationship shown in the accompanying drawings and are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this utility model. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0031] In the description of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "joining" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0032] Furthermore, the technical features involved in the different embodiments of this utility model described below can be combined with each other as long as they do not conflict with each other.

[0033] Please see Figures 1-2 This utility model provides a pipe adaptive chain-type cutting device, including a hydraulic motor 1, which is connected to a reducer 2 to provide power to the reducer 2; the reducer 2 is mounted on an adjusting plate 4 via a bracket 8 in an adjusting assembly; a retractable mold spring 12 is provided between the adjusting plate 4 and the base plate 13, and the mold spring 12 is sleeved on a pull rod 7. The upper and lower ends of the pull rod 7 are respectively connected to the adjusting plate 4 and the base plate 13, which guide the extension and retraction of the mold spring 12; a caster 5 is provided on the lower end face of the base plate 13, and the caster 5 is placed on the pipe; a gear 3 is connected to the output shaft of the reducer 2, and a chain is installed on the gear 3, with the other end of the chain clamped to the pipe; a cutter head 11 is installed on the upper end face of the base plate 13 via a connecting assembly, which can realize the cutting of the pipe using abrasive water jet.

[0034] Specifically, the hydraulic motor 1 is connected to the hydraulic pump, which serves as the driving force source and controls the rotation direction and speed of the hydraulic motor 1.

[0035] Specifically, the adjustment assembly includes a bracket 8, an adjustment plate 4, an adjustment bolt 9, a base plate 13, a mold spring 12, and a pull rod 7. A mold spring 12 is located between the adjustment plate 4 and the base plate 13, and the mold spring 12 is fitted onto the pull rod 7. The lower end of the pull rod 7 is threaded and bolted to the base plate 13. The upper end of the pull rod 7 has a cylindrical boss with a diameter larger than the diameter of the hole in the adjustment plate 4. Above the center of the cylindrical boss is a smaller diameter cylindrical boss with an internal hexagonal groove. The pull rod 7 passes through the hole in the adjustment plate 4 and is threaded to the base plate 13. Rotating the internal hexagonal groove screws the pull rod 7 into the base plate 13, achieving a fixed connection between the pull rod 7 and the base plate 13. A screw hole is located between the adjustment plate 4 and the base plate 13, through which the adjustment bolt 9 can pass. Rotating the external hexagonal adjustment bolt 9 can further compress or extend the spring.

[0036] Specifically, both the adjusting plate 4 and the base plate 13 have an H-shaped structure. After the gear 3 is installed on the reducer 2, it is ensured that the gear 3 is located in the middle of the H-shaped structure of the adjusting plate 4 and the base plate 13.

[0037] Specifically, the adjustment assembly is equipped with an external hexagonal adjusting bolt 9. Rotating the adjusting bolt 9 causes it to act on the adjusting plate 4, which in turn compresses the mold spring 12. Rotating the adjusting bolt 9 clockwise causes it to act on the adjusting plate, which in turn compresses the mold spring 12. This allows for the cutting of the open chain according to the chain length required to bind the chain-type cutting device and the pipe to be cut when the mold spring is compressed. After the ring-type chain-type cutting device and the open chain of the pipe to be cut are engaged in the state of the mold spring being compressed, rotating the adjusting bolt counterclockwise causes the mold spring to extend, thereby tightening the chain and ensuring a tight binding between the chain-type cutting device and the pipe to be cut.

[0038] Specifically, the connecting components include a cutter head mounting base 6, a cutter bar 10, and a cutter bar seat 14. The cutter bar seat 14 is fixedly mounted on the base plate 13, and the cutter bar 10 is mounted on the cutter bar seat 14 to ensure that the cutter bar 10 is parallel to the base plate 13. The cutter head 11 is fixed to the cutter bar 10 through the cutter head mounting base 6 to ensure that the cutter head 11 forms a suitable angle with the surface of the pipe to be cut.

[0039] Specifically, the cutter bar 10 is L-shaped, and its two ends are connected to the cutter bar seat 14 and the cutter head mounting seat 6, respectively. The position of the cutter bar 10 within the cutter bar seat 14 is adjustable to adjust the horizontal position of the cutter head 11. The position of the cutter head mounting seat 6 on the vertical rod of the cutter bar 10 is adjustable to adjust the distance between the cutter head 11 and the surface of the pipe to be cut.

[0040] Specifically, the cutter head mounting base 6 has a through-hole connecting a triangular prism and a cylindrical opening in the middle, and the through-hole is used to install and fix the cutter bar 10 or the cutter head 11.

[0041] Specifically, the base plate 13, the tool holder 14, the tool head 11, the tool head mounting seat 6, and the tool holder 10 are all made of non-ferrous metal alloy, and do not produce sparks when they collide.

[0042] Specifically, gear 3 and caster 5 are made of non-ferrous metal alloy or polymer material to ensure that no sparks are generated during collision.

[0043] Before using the pipe adaptive chain-type cutting device shown in this application, a hydraulic pump and a hydraulic motor 1 should be connected via a hydraulic pipeline, and the forward and reverse rotation and speed of the hydraulic motor 1 should be adjusted by the hydraulic pump. A high-pressure hose should be connected to the cutter head 11 so that the cutter head 11 can spray a stable and continuous abrasive water jet.

[0044] Before using the pipe adaptive chain-type cutting device shown in this application, the width of the front and rear wheels of the casters 5 is adjusted to select an appropriate size and place the device on the outer surface of the pipe, so that the four casters 5 are in contact with the outer surface of the pipe.

[0045] Before using the pipe adaptive chain cutting device shown in this application, the distance and relative angle between the cutter head 11 and the outer surface of the pipe should be reasonably adjusted according to the pipe cutting depth requirements.

[0046] Before using the self-adaptive chain-type pipe cutting device shown in this application, the mold spring 12 is brought to a large compression state by rotating the adjusting bolt. Then, a chain ring of the appropriate length is cut and attached to the chain-type pipe cutting machine and the pipe. After the chain is connected, the adjusting bolt is loosened to bring the chain to a tension state.

[0047] When using the pipe adaptive chain-type cutting device shown in this application, when the device travels to the far end of the deformed elliptical pipe, the mold spring 12 is further compressed, thereby ensuring that the chain will not break due to the tensile stress generated by tension exceeding the allowable stress of the chain.

[0048] When using the pipe adaptive chain-type cutting device shown in this application, when the device moves to the end of the deformed elliptical pipe, the mold spring 12 can extend to keep the chain at a good tension, so that the device will not fall due to the chain being too loose.

[0049] When using the adaptive chain-type pipe cutting device shown in this application, when the pipe surface is not smooth due to weld beads, protrusions, or other reasons, the chain can adaptively adjust the actual required chain length and tension according to the smoothness of the pipe, so that the walking path of the chain-type pipe cutting machine is on a circle in the same plane.

[0050] The technical features of the above embodiments can be combined in any way. For the sake of brevity, not all possible combinations of the technical features in the above embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.

[0051] The embodiments described above are merely illustrative of several implementations of this utility model, and while the descriptions are relatively specific and detailed, they should not be construed as limiting the scope of the utility model patent. It should be noted that those skilled in the art can make various modifications and improvements without departing from the concept of this utility model, and these all fall within the protection scope of this utility model. Therefore, the protection scope of this utility model patent should be determined by the appended claims.

Claims

1. A pipe adaptive chain-type cutting device, characterized in that, The system includes a hydraulic motor connected to a reducer to provide power; the reducer is mounted on an adjusting plate via a bracket in an adjusting assembly; a retractable mold spring is provided between the adjusting plate and the base plate, the mold spring being sleeved on a pull rod, the upper and lower ends of which are connected to the adjusting plate and the base plate respectively; casters are provided on the lower end of the base plate, and the casters are placed on the pipe; a gear is connected to the output shaft of the reducer, and a chain is mounted on the gear, the other end of which is clamped to the pipe; a cutter head is mounted on the upper end of the base plate via a connecting assembly, enabling the pipe to be cut using an abrasive water jet.

2. The pipe adaptive chain-type cutting device as described in claim 1, characterized in that, The hydraulic motor is connected to the hydraulic pump, which serves as the driving force source and controls the rotation direction and speed of the hydraulic motor.

3. The pipe adaptive chain-type cutting device as described in claim 1, characterized in that, The adjustment assembly includes a bracket, an adjustment plate, an adjustment bolt, a base plate, a mold spring, and a pull rod. A mold spring is positioned between the adjustment plate and the base plate, and is fitted onto the pull rod. The lower end of the pull rod is threaded and bolted to the base plate. A cylindrical boss is located at the upper end of the pull rod, with a diameter larger than the diameter of the hole in the adjustment plate. A smaller diameter cylindrical boss with an internal hexagonal groove is located above the center of the cylindrical boss. The pull rod passes through the hole in the adjustment plate and is threaded to the base plate. Rotating the internal hexagonal groove screws the pull rod into the base plate, thus fixing the pull rod to the base plate. A screw hole is located between the adjustment plate and the base plate, through which the adjustment bolt can pass.

4. The pipe adaptive chain-type cutting device as described in claim 3, characterized in that, Both the adjusting plate and the base plate have an H-shaped structure. After the gear is installed on the reducer, it is ensured that the gear is located in the middle of the H-shaped structure of the adjusting plate and the base plate.

5. The pipe adaptive chain-type cutting device as described in claim 4, characterized in that, The adjustment assembly is equipped with an external hexagonal adjustment bolt. Rotating the adjustment bolt clockwise causes it to act on the adjustment plate, which compresses the mold spring. This allows for the cutting of the open chain based on the required chain length for binding the chain-type cutting device and the pipe to be cut when the mold spring is compressed. After the ring-type chain-type cutting device and the open chain of the pipe to be cut are engaged in the state of the mold spring being compressed, rotating the adjustment bolt counterclockwise causes the mold spring to extend, thereby tightening the chain and ensuring a tight binding between the chain-type cutting device and the pipe to be cut.

6. The pipe adaptive chain-type cutting device as described in claim 1, characterized in that, The connecting assembly includes a cutter head mounting base, a cutter bar, and a cutter bar seat. The cutter bar seat is fixedly mounted on the base plate, and the cutter bar is mounted on the cutter bar seat to ensure that the cutter bar is parallel to the base plate. The cutter head is fixed to the cutter bar through the cutter head mounting base to ensure that the cutter head forms a suitable angle with the surface of the pipe to be cut.

7. The pipe adaptive chain-type cutting device as described in claim 6, characterized in that, The cutter bar is L-shaped, with its two ends connected to a cutter bar seat and a cutter head mounting seat, respectively. The horizontal bar of the cutter bar is adjustable in position within the cutter bar seat to adjust the horizontal position of the cutter head. The cutter head mounting seat is adjustable on the vertical bar of the cutter bar to adjust the distance between the cutter head and the surface of the pipe to be cut.

8. The pipe adaptive chain-type cutting device as described in claim 7, characterized in that, The center of the cutter head mounting base is provided with a through-hole connecting a triangular prism and a cylindrical opening, and the through-hole is used to install and fix the cutter bar or cutter head.

9. The pipe adaptive chain-type cutting device as described in claim 1, characterized in that, The base plate, tool holder, tool head, tool head mounting base, and tool holder are all made of non-ferrous metal alloy, and do not produce sparks upon impact.

10. The pipe adaptive chain-type cutting device as described in claim 1, characterized in that, The gears and casters are made of non-ferrous metal alloys or polymers to ensure that no sparks are generated upon collision.

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