Pipeline cutting device

Abstract

The invention provides a pipeline cutting device which comprises a shaft body used for being arranged in a to-be-cut pipeline. The rotating assembly is rotatably arranged on the shaft body in a sleeving manner; the positioning assembly is arranged on the shaft body, and the positioning assembly is used for limiting the relative position of the shaft body and the to-be-cut pipeline so that the axis of the shaft body can coincide with the axis of the to-be-cut pipeline; and the cutting assembly is provided with a cutting end, the cutting assembly is arranged on the rotating assembly, and the cutting end is used for being arranged towards the inner wall of a to-be-cut pipeline. Based on the arrangement, the pipeline cutting device provided by the embodiment of the invention can cut from the interior of the to-be-cut pipeline, does not need a large operation space, has high environmental adaptability, can save manpower, and can improve the cutting efficiency and quality.

Description

Technical Field

[0001] The present disclosure relates to the field of welding technology, and in particular to a pipe cutting device. Background Art

[0002] In metal pipe welding operations, the weld position needs to be beveled before welding. Bevel refers to a section at a specific angle of the part to be welded. The purpose of making the bevel is to form a groove at the joint of the welded parts to ensure the strength and quality of the weld. On-site construction often uses external equipment to mechanically cut the bevel from the outside of the steel pipe to the inside. Due to the small space in which some pipes are located, it is impossible to install external equipment for mechanical cutting. They can only be manually cut by manually operating small manual cutting equipment. However, the angle of the manually cut bevel is difficult to guarantee, and the surface flatness after cutting is poor, which affects the welding effect and operation efficiency. Summary of the invention

[0003] The present disclosure aims to solve at least one of the technical problems existing in the prior art or related art.

[0004] To this end, the present disclosure provides a pipe cutting device.

[0005] In view of this, according to an embodiment of the present disclosure, a pipe cutting device is proposed, comprising:

[0006] A shaft body, used for being arranged inside the pipe to be cut;

[0007] A rotating assembly, the rotating assembly is rotatably sleeved on the shaft body;

[0008] A positioning assembly is arranged on the shaft body, and is used to limit the relative position of the shaft body and the pipe to be cut so that the axis of the shaft body coincides with the axis of the pipe to be cut;

[0009] The cutting assembly has a cutting end, which is arranged on the rotating assembly and is used to be arranged toward the inner wall of the pipe to be cut.

[0010] In a feasible implementation, the positioning component includes:

[0011] A plurality of positioning parts, the plurality of positioning parts are arranged at intervals along the circumference of the shaft body, a positioning wall is formed on one side of each positioning part, and the positioning wall is used to abut against the inner wall of the pipe to be cut;

[0012] The first adjusting part is arranged on the shaft body, and the sides of the plurality of positioning parts facing away from the positioning wall are all connected to the first adjusting part, and the first adjusting part is used to adjust the distance between the positioning wall and the shaft body.

[0013] In a feasible implementation manner, the first adjustment unit includes:

[0014] The adjusting screw has a blind hole along the axial direction of the shaft body, the adjusting screw passes through the blind hole, and the head of the adjusting screw abuts against one end of the shaft body;

[0015] An adjusting member, wherein the adjusting screw is passed through the adjusting member, the adjusting member is located at the other end of the shaft body, and the adjusting screw is threadedly connected to the adjusting member;

[0016] A first connecting member, one end of which is hinged to the adjusting member, and the other end of which is hinged to a side of the positioning portion away from the positioning wall;

[0017] A second connecting member, one end of which is hinged to the adjusting member, and the other end of which is hinged to a side of the positioning portion away from the positioning wall;

[0018] Wherein, each positioning portion corresponds to at least one first connecting member and at least one second connecting member.

[0019] In a feasible implementation manner, the positioning portion includes:

[0020] A positioning plate, wherein the first adjusting portion is connected to one side of the positioning plate;

[0021] The flexible member is arranged on the other side of the positioning plate, and the side of the flexible member facing away from the positioning plate forms a positioning wall.

[0022] In a feasible implementation manner, the positioning wall is arc-shaped along the circumference of the shaft body.

[0023] In a feasible implementation manner, the rotating assembly includes:

[0024] A rotating part, the rotating part is sleeved on the shaft body;

[0025] The second adjusting part is connected to the rotating part, the cutting assembly is arranged on the second adjusting part, and the second adjusting part is used to adjust the angle of the cutting end.

[0026] In a feasible implementation manner, the rotating part includes:

[0027] The rotating handle is sleeved on the shaft body;

[0028] A bearing is disposed between the rotating handle and the shaft body;

[0029] Wherein, along the radial direction of the shaft body, the rotating handle is provided with a long hole, the second adjusting part is penetrated through the long hole, and slides along the long hole.

[0030] In a feasible implementation manner, the second adjustment unit includes:

[0031] A clamping member, the clamping member clamps the cutting assembly;

[0032] A threaded rod is connected to the clamping member, and the threaded rod is passed through the long hole;

[0033] A fastening nut, threadedly connected to the threaded rod;

[0034] The clamping piece and the fastening nut respectively abut against two sides of the rotating handle at the long hole.

[0035] In one possible embodiment, the cutting assembly includes:

[0036] A cutting torch, the cutting torch having a cutting nozzle, the cutting end being formed at the cutting nozzle;

[0037] The gas source part is connected to the cutting torch and is used to provide combustion gas for the cutting torch.

[0038] In a feasible implementation, it also includes:

[0039] A driving motor, connected to the rotating assembly, for driving the rotating assembly to rotate;

[0040] The controller is connected to the drive motor through a signal and is used to control the output speed of the drive motor.

[0041] Compared with the prior art, the present disclosure at least includes the following beneficial effects: the pipe cutting device provided by the embodiment of the present disclosure includes a shaft body, a rotating assembly, a positioning assembly and a cutting assembly; wherein the rotating assembly is sleeved on the shaft body, the rotating assembly can rotate on the shaft body, and the cutting assembly is arranged on the rotating assembly, so that when the rotating assembly rotates, the cutting assembly can rotate together with the rotating assembly; the positioning assembly is also arranged on the shaft body. In actual application, the shaft body is arranged inside the pipe to be cut, and the cutting end of the cutting assembly faces the inner wall of the pipe to be cut. The positioning assembly can limit the relative position of the shaft body and the pipe to be cut. Through the limitation of the positioning assembly, the axial direction of the shaft body is consistent with the conducting direction of the pipe to be cut, and the axis of the pipe to be cut coincides with the axis of the shaft body, so that the cutting end can cut the pipe to be cut through the rotating assembly. The pipe cutting device does not require a large operating space and has strong environmental adaptability, which can save manpower and improve the efficiency and quality of cutting.

[0042] The pipe cutting device described in the present disclosure, other advantages, objectives and features of the present disclosure will be reflected in part through the following description, and in part will be understood by those skilled in the art through research and practice of the present disclosure. BRIEF DESCRIPTION OF THE DRAWINGS

[0043] Various other advantages and benefits will become apparent to those of ordinary skill in the art by reading the detailed description of the exemplary embodiments below. The accompanying drawings are only for the purpose of illustrating exemplary embodiments and are not to be considered as limiting the present disclosure. Also, the same reference symbols are used throughout the accompanying drawings to represent the same components. In the accompanying drawings:

[0044] Figure 1A schematic structural diagram of a pipe cutting device according to an embodiment of the present disclosure;

[0045] Figure 2 A schematic structural diagram of a second adjustment portion of a pipe cutting device according to an embodiment of the present disclosure.

[0046] in, Figure 1 and Figure 2 The corresponding relationship between the reference numerals and the component names is as follows:

[0047] 100 axis, 200 rotation components, 300 positioning components, 400 cutting components;

[0048] 310 a plurality of positioning parts, 320 a first adjustment part;

[0049] 321 adjusting screw, 322 adjusting member, 323 first connecting member, 324 second connecting member;

[0050] 211 a rotating handle, 221 a clamping member, 222 a threaded rod, 223 a fastening nut;

[0051] 4001 cutting end;

[0052] 900 pipes to be cut. DETAILED DESCRIPTION

[0053] The exemplary embodiments of the present disclosure will be described in more detail below with reference to the accompanying drawings. Although exemplary embodiments of the present disclosure are shown in the accompanying drawings, it should be understood that the present disclosure can be implemented in various forms and should not be limited by the embodiments set forth herein. On the contrary, these embodiments are provided to enable a more thorough understanding of the present disclosure and to fully convey the scope of the present disclosure to those skilled in the art.

[0054] like Figure 1 and Figure 2 As shown, according to an embodiment of the present disclosure, a pipe cutting device is proposed, including: a shaft body 100, used to be arranged inside a pipe 900 to be cut; a rotating component 200, the rotating component 200 is rotatably mounted on the shaft body 100; a positioning component 300, arranged on the shaft body 100, the positioning component 300 is used to limit the relative position of the shaft body 100 and the pipe 900 to be cut, so that the axis of the shaft body 100 coincides with the axis of the pipe 900 to be cut; a cutting component 400, having a cutting end 4001, the cutting component 400 is arranged on the rotating component 200, and the cutting end 4001 is used to be arranged toward the inner wall of the pipe 900 to be cut.

[0055] The pipe cutting device according to the embodiment of the present disclosure includes a shaft body 100, a rotating assembly 200, a positioning assembly 300 and a cutting assembly 400; wherein the rotating assembly 200 is sleeved on the shaft body 100, and the rotating assembly 200 can rotate on the shaft body 100, and the cutting assembly 400 is arranged on the rotating assembly 200, so that when the rotating assembly 200 rotates, the cutting assembly 400 can rotate together with the rotating assembly 200; the positioning assembly 300 is also arranged on the shaft body 100. In actual application, the shaft body 100 is arranged inside the pipe 900 to be cut, and the cutting end of the cutting assembly 400 is arranged on the shaft body 100. 4001 is directed toward the inner wall of the pipe 900 to be cut, and the positioning component 300 can limit the relative position of the shaft body 100 and the pipe 900 to be cut. Through the limitation of the positioning component 300, the axial direction of the shaft body 100 is consistent with the conducting direction of the pipe 900 to be cut, and the axis of the pipe 900 to be cut coincides with the axis of the shaft body 100, so that the cutting end 4001 can cut the pipe 900 to be cut by rotating the component 200. The pipe cutting device does not require a large operating space and has strong environmental adaptability, which can save manpower and improve cutting efficiency and quality.

[0056] It can be understood that the axis of the shaft body 100 is consistent with the axis of the pipe 900 to be cut. During the rotation of the rotating component 200, the cutting end 4001 can maintain a fixed cutting depth with the inner wall of the pipe being cut, which can improve the cutting accuracy and make the surface after cutting smoother, which is beneficial to the welding quality.

[0057] It can be understood that the cutting angle of the cutting end 4001 is consistent with the required angle of the groove.

[0058] It should be noted that in traditional technology, external equipment is often used to mechanically cut the groove from the outside of the steel pipe to the inside. Due to the small space in which some pipes are located, it is impossible to install external equipment for mechanical cutting, and they can only be cut manually by manually operating small manual cutting equipment. Manual cutting has high operating requirements for workers and will cause great manpower consumption. However, it is difficult to ensure the angle of the manually cut groove, and it is affected by factors such as the fatigue of the workers themselves. The surface flatness after cutting is guaranteed, which affects the welding effect and work efficiency. Compared with traditional technology, the pipe cutting device proposed in the embodiment of the present disclosure, based on the above-mentioned settings, can cut from the inside of the pipe 900 to be cut. The pipe cutting device does not require a large operating space and has strong environmental adaptability. It can save manpower and improve cutting efficiency and quality.

[0059] In some examples, such as Figure 1As shown, the positioning assembly 300 includes: a plurality of positioning portions 310, the plurality of positioning portions 310 are arranged at intervals along the circumference of the shaft body 100, a positioning wall is formed on one side of each positioning portion, and the positioning wall is used to abut against the inner wall of the pipe 900 to be cut; a first adjustment portion 320, which is arranged on the shaft body 100, and the sides of the plurality of positioning portions 310 facing away from the positioning wall are all connected to the first adjustment portion 320, and the first adjustment portion 320 is used to adjust the distance between the positioning wall and the shaft body 100.

[0060] In the above technical solution, the positioning assembly 300 includes a plurality of positioning portions 310 and a first adjusting portion 320. The first adjusting portion 320 is arranged on the shaft body 100. The plurality of positioning portions 310 are all connected to the first adjusting portion 320. The plurality of positioning portions 310 are arranged on the peripheral side of the shaft body 100. A positioning portion is formed on a side of each positioning portion that is away from the first adjusting portion 320. In actual application, the positioning portion can be adjusted by the first adjusting portion 320 to move the positioning portion toward or away from the shaft body 100. When the shaft body 100 and the pipe 900 to be cut need to be limited by the positioning assembly 300, the positioning portion can be adjusted away from the shaft body 100 by the first adjusting portion 320 so that the positioning wall abuts against the inner wall of the pipe 900 to be cut, thereby realizing the positioning of the shaft body 100.

[0061] It can be understood that the distance between each positioning wall and the axis of the shaft body 100 is equal, which is more conducive to ensuring that the shaft body 100 can be directly positioned so that the axis coincides with the axis of the pipe 900 to be cut.

[0062] In some examples, such as Figure 1 As shown, the first adjusting part 320 includes: an adjusting screw 321, along the axial direction of the shaft body 100, the shaft body 100 is provided with a blind hole, the adjusting screw 321 is passed through the blind hole, and the head of the adjusting screw 321 abuts against one end of the shaft body 100;

[0063] An adjusting member 322, an adjusting screw 321 is passed through the adjusting member 322, the adjusting member 322 is located at the other end of the shaft body 100, and the adjusting screw 321 is threadedly connected to the adjusting member 322; a first connecting member 323, one end of the first connecting member 323 is hinged to the adjusting member 322, and the other end of the first connecting member 323 is hinged to the side of the positioning portion away from the positioning wall; a second connecting member 324, one end of the second connecting member 324 is hinged to the adjusting member 322, and the other end of the second connecting member 324 is hinged to the side of the positioning portion away from the positioning wall; wherein each positioning portion corresponds to at least one first connecting member 323 and at least one second connecting member 324.

[0064] In the above technical solution, the first adjusting portion 320 includes an adjusting screw 321, an adjusting member 322, a first connecting member 323 and a second connecting member 324. Along the axial direction of the shaft body 100, the adjusting member 322 is arranged at one end of the shaft body 100, and the adjusting screw 321 is penetrated through a blind hole in the axial direction of the shaft body 100. At the same time, the adjusting screw 321 is also penetrated through the adjusting member 322, and the adjusting screw 321 and the adjusting member 322 are threadedly connected. The head of the adjusting screw 321 is located on the shaft body 100 away from the adjusting member One end of 322, so that by rotating the adjusting screw 321, the adjusting member 322 can be brought close to or away from the shaft body 100, the first connecting member 323 is arranged between the positioning portion and the adjusting member 322, and the first connecting member 323 and the adjusting member 322 and the positioning portion are all hingedly connected, the second connecting member 324 is arranged between the positioning portion and the shaft body 100, and then the adjusting member 322 is brought close to or away from the shaft body 100, so that the distance between the positioning portion and the shaft body 100 can be adjusted.

[0065] It is understandable that each positioning portion corresponds to at least one first connecting member 323 and at least one second connecting member 324 , thereby ensuring that each positioning portion can be driven by the adjusting member 322 to move closer to or farther from the shaft body 100 .

[0066] In some examples, such as Figure 1 As shown, the positioning part includes: a positioning plate, the first adjustment part 320 is connected to one side of the positioning plate; a flexible member is arranged on the other side of the positioning plate, and the side of the flexible member facing away from the positioning plate forms a positioning wall.

[0067] In the above technical solution, the positioning part includes a positioning plate and a flexible part, wherein the first adjustment part 320 is connected to one side of the positioning part, and the flexible part is arranged on the other side of the positioning plate. When the shaft body 100 needs to be positioned, the positioning plate can be driven by the first adjustment part 322 to move toward the inner wall of the pipe 900 to be cut until the positioning plate abuts the flexible part against the inner wall of the pipe 900 to be cut, and the positioning wall is formed on the side of the flexible part for abutting against the pipe 900 to be cut; on the one hand, the flexible part can protect the inner wall of the pipe 900 to be cut, and on the other hand, it can also increase the friction between the positioning wall and the inner wall of the pipe 900 to be cut, thereby being more conducive to positioning the shaft body 100.

[0068] In some examples, along the circumference of the shaft body 100 , the positioning wall is arc-shaped.

[0069] In the above technical solution, the arc-shaped positioning wall along the circumference of the shaft body 100 can make the positioning wall fit better with the inner wall of the pipe 900 to be cut, increase the contact area between the positioning wall and the inner wall of the pipe 900 to be cut, and facilitate stable positioning of the shaft body 100.

[0070] In some examples, the rotating assembly 200 includes: a rotating part, which is sleeved on the shaft 100; a second adjusting part, which is connected to the rotating part, and the cutting assembly 400 is arranged on the second adjusting part, and the second adjusting part is used to adjust the angle of the cutting end 4001.

[0071] In the above technical solution, the rotating component 200 includes a rotating part and a second adjusting part, wherein the rotating part is sleeved on the shaft body 100, the second adjusting part is arranged on the rotating part, and the cutting component 400 is arranged on the second adjusting part, so that the rotating part rotates on the shaft body 100 to drive the cutting component 400 to rotate, and the second adjusting part can adjust the angle of the cutting end 4001 of the cutting component 400, and then different angles can be set for the cutting end 4001 according to different slope requirements, thereby improving the flexibility of the cutting end 4001 and also improving the adaptability of the device.

[0072] In some examples, such as Figure 1 As shown, the rotating part includes: a rotating handle 211, which is sleeved on the shaft body 100; a bearing, which is arranged between the rotating handle 211 and the shaft body 100; wherein, along the radial direction of the shaft body 100, the rotating handle 211 is provided with a long hole, and the second adjustment part is penetrated through the long hole and slides along the long hole.

[0073] In the above technical solution, the rotating part includes a rotating handle 211 and a bearing. The bearing is arranged between the rotating handle 211 and the shaft body 100 to improve the rotation flexibility of the rotating handle 211. The rotating handle 211 is provided with a long hole along the radial direction of the shaft body 100. The second adjusting member 322 is arranged in the long hole, and the second adjusting part can slide along the long hole. In actual application, by adjusting the second adjusting part at different positions of the long hole, the rotation radius of the cutting end 4001 can be adjusted, so that the device can adapt to pipes 900 to be cut with different diameters.

[0074] It can be understood that, along the extension direction of the long hole, when the second adjustment part slides toward the direction close to the shaft body 100, the rotation radius of the cutting end 4001 decreases, and when the second adjustment part slides toward the direction away from the shaft body 100, the rotation radius of the cutting end 4001 increases.

[0075] It is understandable that the rotating handle 211 can be configured to be disc-shaped.

[0076] In some examples, such as Figure 1 and Figure 2As shown, the second adjustment part includes: a clamping member 221, which clamps the cutting assembly 400; a threaded rod 222, which is connected to the clamping member 221 and is passed through the long hole; a fastening nut 223, which is threadedly connected to the threaded rod 222; wherein the clamping member 221 and the fastening nut 223 respectively abut against both sides of the rotating handle 211 at the long hole.

[0077] In the above technical solution, the second adjustment part includes a clamping member 221, a threaded rod 222 and a fastening nut 223. The threaded rod 222 is connected to the clamping member 221, and the threaded rod 222 is inserted into the elongated hole. The fastening nut 223 is connected to the threaded rod 222 through threads, so that the clamping member 221 and the fastening nut 223 are respectively abutted against the two sides of the elongated hole, that is, the clamping member 221 and the fastening nut 223 clamp the rotating handle 211; the clamping member 221 is used to clamp the cutting assembly 400. When the cutting assembly 400 is clamped by the clamping member 221, the cutting end 4001 can have different cutting angles by rotating the clamping member 221 relative to the elongated hole and then tightening it through the fastening nut 223.

[0078] In some examples, the cutting assembly 400 includes: a cutting torch having a cutting nozzle, and a cutting end 4001 is formed at the cutting nozzle; and a gas source part connected to the cutting torch and used for providing combustion gas supply for the cutting torch.

[0079] In the above technical solution, the cutting assembly 400 includes a cutting torch and a gas source part, the gas source part is connected to the cutting torch, the gas source part provides combustion gas for the cutting torch, the cutting torch has a cutting nozzle, one end of the cutting nozzle forms a cutting end 4001, and the cutting nozzle outputs a high-temperature flame through the cutting end 4001 to cut the pipe 900 to be cut.

[0080] In some examples, it also includes: a driving motor connected to the rotating component 200 and used to drive the rotating component 200 to rotate; and a controller whose signal is connected to the driving motor and used to control the speed output by the driving motor.

[0081] In the above technical solution, the pipe cutting device also includes a driving motor and a controller. The driving motor is connected to the rotating component 200, and the controller is connected to the driving motor signal, so that the driving motor can be controlled by the controller to rotate, and then the rotation of the rotating component 200 can be controlled. Such a setting can protect the safety of the staff on the one hand, and on the other hand, it can make the rotation speed of the rotating component 200 more uniform during the cutting process, and the cutting is smoother, which is beneficial to improve the flatness of the cutting surface.

[0082] In the present disclosure, the terms "first", "second", and "third" are used for descriptive purposes only and are not to be understood as indicating or implying relative importance; the term "plurality" refers to two or more, unless otherwise expressly defined. The terms "installed", "connected", "connected", "fixed", etc. should be understood in a broad sense. For example, "connected" can be a fixed connection, a detachable connection, or an integral connection; "connected" can be a direct connection or an indirect connection through an intermediate medium. For those of ordinary skill in the art, the specific meanings of the above terms in the present disclosure can be understood according to the specific circumstances.

[0083] In the description of the present disclosure, it is necessary to understand that the directions or positional relationships indicated by the terms "up", "down", "left", "right", "front", "back", etc. are based on the directions or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present disclosure and simplifying the description, rather than indicating or implying that the device or unit referred to must have a specific direction, be constructed and operated in a specific orientation, and therefore, should not be understood as a limitation on the present disclosure.

[0084] In the description of this specification, the description of the terms "one embodiment", "some embodiments", "specific embodiments", etc. means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the present disclosure. In this specification, the schematic representation of the above terms does not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described can be combined in any one or more embodiments or examples in a suitable manner.

[0085] The above are only preferred embodiments of the present disclosure and are not intended to limit the present disclosure. For those skilled in the art, the present disclosure may have various modifications and variations. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present disclosure shall be included in the protection scope of the present disclosure.

Claims

1. A pipe cutting device, characterized in that: include: A shaft body, used for being arranged inside the pipe to be cut; A rotating assembly, the rotating assembly being rotatably sleeved on the shaft body; A positioning assembly, arranged on the shaft body, and used for limiting the relative position of the shaft body and the pipe to be cut so that the axis of the shaft body coincides with the axis of the pipe to be cut; The cutting component has a cutting end, and the cutting component is arranged on the rotating component. The cutting end is used to be arranged toward the inner wall of the pipe to be cut.

2. The pipe cutting device according to claim 1, characterized in that: The positioning component comprises: A plurality of positioning parts, the plurality of positioning parts are arranged at intervals along the circumference of the shaft body, a positioning wall is formed on one side of each positioning part, and the positioning wall is used to abut against the inner wall of the pipe to be cut; The first adjusting part is arranged on the shaft body, and the sides of the plurality of positioning parts facing away from the positioning wall are all connected to the first adjusting part, and the first adjusting part is used to adjust the distance between the positioning wall and the shaft body.

3. The pipe cutting device according to claim 2, characterized in that: The first adjustment unit includes: An adjusting screw, wherein the shaft body is provided with a blind hole along the axial direction of the shaft body, the adjusting screw is passed through the blind hole, and the head of the adjusting screw abuts against one end of the shaft body; An adjusting member, wherein the adjusting screw is passed through the adjusting member, the adjusting member is located at the other end of the shaft body, and the adjusting screw is threadedly connected to the adjusting member; a first connecting member, one end of which is hinged to the adjusting member, and the other end of which is hinged to a side of the positioning portion away from the positioning wall; a second connecting member, one end of which is hinged to the adjusting member, and the other end of which is hinged to a side of the positioning portion away from the positioning wall; Wherein, each of the positioning portions corresponds to at least one of the first connecting members and at least one of the second connecting members.

4. The pipe cutting device according to claim 2, characterized in that: The positioning portion comprises: A positioning plate, wherein the first adjusting portion is connected to one side of the positioning plate; The flexible member is arranged on the other side of the positioning plate, and the side of the flexible member facing away from the positioning plate forms a positioning wall.

5. The pipe cutting device according to claim 2, characterized in that: Along the circumference of the shaft body, the positioning wall is arc-shaped.

6. The pipe cutting device according to claim 1, characterized in that: The rotating assembly comprises: A rotating part, wherein the rotating part is sleeved on the shaft body; The second adjusting part is connected to the rotating part, the cutting assembly is arranged on the second adjusting part, and the second adjusting part is used to adjust the angle of the cutting end.

7. The pipe cutting device according to claim 6, characterized in that: The rotating part comprises: A rotating handle is sleeved on the shaft; A bearing, disposed between the rotating handle and the shaft; Wherein, along the radial direction of the shaft body, the rotating handle is provided with an elongated hole, and the second adjusting portion is penetrated through the elongated hole and slides along the elongated hole.

8. The pipe cutting device according to claim 7, characterized in that: The second adjustment unit includes: A clamping member, wherein the clamping member clamps the cutting assembly; A threaded rod connected to the clamping member, the threaded rod passing through the elongated hole; A fastening nut, threadedly connected to the threaded rod; Wherein, the clamping member and the fastening nut respectively abut against two sides of the rotating handle at the elongated hole.

9. The pipe cutting device according to any one of claims 1 to 8, characterized in that: The cutting assembly comprises: a cutting torch, the cutting torch having a cutting nozzle, the cutting end being formed at the cutting nozzle; The gas source part is connected to the cutting torch and is used for providing combustion gas for the cutting torch.

10. The pipe cutting device according to any one of claims 1 to 8, characterized in that: Also includes: A driving motor, connected to the rotating assembly, and used to drive the rotating assembly to rotate; A controller is signal-connected to the drive motor and is used to control the speed output by the drive motor.

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