Pipe cutting equipment

Abstract

The present application discloses a pipe cutting device comprising a base, a turntable, a cutter assembly, and a turntable drive mechanism, wherein: the turntable and the turntable drive mechanism are both mounted on the base, and the turntable is rotatably arranged; the turntable is provided with a first pipe avoidance hole; the turntable drive mechanism is used to drive the turntable to rotate about the axis of the first pipe avoidance hole; the cutter assembly includes a plurality of cutters evenly arranged along the circumference of the first pipe avoidance hole; and a cutter drive mechanism is used to drive the plurality of cutters to rotate; the plurality of cutters are rotatably connected to the turntable; the cutter drive mechanism is used to drive the plurality of cutters to rotate simultaneously in the same clockwise direction. The above solution can optimize the pipe cutting effect.

Description

Technical Field

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

[0002] Pipe cutting equipment is used to cut pipes and is widely used in various fields. For example, in oil exploration operations, when a blowout occurs, pipe cutting equipment is required to sever the pipeline to prevent crude oil from gushing out of the blowout preventer. Alternatively, in pipe production operations, pipe cutting equipment is used to cut semi-finished pipes into finished pipes of standard sizes.

[0003] In related art, pipe cutting equipment includes two opposing cutters. When cutting a pipe, the two cutters are driven along a straight path and move toward each other, directly severing the pipe from both sides. However, during this pipe cutting operation, the cutting force of the cutters is unevenly distributed around the pipe's circumference, making the pipe susceptible to damage during the severing process. This drawback is particularly pronounced when cutting flexible pipes. Summary of the Invention

[0004] The present application discloses a pipe cutting device capable of optimizing the pipe cutting effect.

[0005] In order to solve the above problems, this application adopts the following technical solutions:

[0006] The present application provides a pipe cutting device, comprising a base, a turntable, a cutter assembly, and a turntable drive mechanism, wherein:

[0007] The turntable and the turntable driving mechanism are both provided on the base, and the turntable is rotatably arranged. The turntable is provided with a first pipe avoidance hole, and the turntable driving mechanism is used to drive the turntable to rotate around the axis of the first pipe avoidance hole;

[0008] The cutter assembly includes a plurality of cutters evenly arranged along the circumference of the first pipe avoidance hole and a cutter drive mechanism for driving the plurality of cutters to rotate. The plurality of cutters are rotatably connected to the turntable, and the cutter drive mechanism is used to drive the plurality of cutters to rotate simultaneously in the same clockwise direction.

[0009] The technical solution adopted in this application can achieve the following beneficial effects:

[0010] In the pipe cutting equipment disclosed in the present application, the cutter can be rotatably arranged on the turntable, and can form an arc-shaped feed trajectory during the rotation process, thereby applying a cutting effect on the circumference of the pipe along the feed trajectory.

[0011] At the same time, since the cutter is connected to the turntable, by driving the turntable to rotate, the cutter assembly as a whole can be driven to rotate circumferentially along the first pipe avoidance hole, thereby cooperating with the cutter to gradually cut the pipe along the arc-shaped feed trajectory to cut the pipe in the circumferential direction.

[0012] Compared with the related art method of cutting pipes along a straight feed trajectory, the pipe cutting equipment of the present application is based on an arc-shaped feed trajectory. The cutter can simultaneously feed and gradually cut the pipe during the circumferential rotation along the first pipe avoidance hole, thereby optimizing the distribution uniformity of the cutting action to avoid damage to the pipe and optimize the pipe cutting effect. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] The drawings described herein are used to provide a further understanding of the present application and constitute a part of the present application. The illustrative embodiments of the present application and their descriptions are used to explain the present application and do not constitute an improper limitation on the present application. In the drawings:

[0014] Figure 1 This is a schematic structural diagram of the pipe cutting device disclosed in an embodiment of the present application;

[0015] Figure 2 This is a front view of the pipe cutting device disclosed in an embodiment of the present application;

[0016] Figure 3 The pipe cutting device disclosed in the embodiment of the present application is a schematic structural diagram in which the limiting pressure plate is hidden;

[0017] Figure 4 This is a schematic structural diagram of the position limiting pressure plate disclosed in the embodiment of this application;

[0018] Figure 5 A schematic diagram of the feed trajectory of the cutter disclosed in the embodiment of the present application;

[0019] Figures 6 to 8 They are schematic diagrams of states at different stages of the process of the cutter assembly disclosed in the embodiment of the present application cutting a pipe;

[0020] Figure 9 This is a schematic structural diagram of a double-edged type cutter disclosed in an embodiment of the present application;

[0021] Figure 10 This is a schematic structural diagram of a single-edged type cutter disclosed in an embodiment of the present application;

[0022] Figure 11 A front view and a top view of a double-edged type cutter of the first shape disclosed in an embodiment of the application;

[0023] Figure 12 A front view and a top view of a double-edged type cutter of a second shape disclosed in an embodiment of the application;

[0024] Figure 13 A front view and a top view of a double-edged type cutter of a third shape disclosed in an embodiment of the application;

[0025] Figure 14 A front view and a top view of a single-edged type cutter of the first shape disclosed in an embodiment of the application;

[0026] Figure 15 A front view and a top view of a single-edged type cutter of a second shape disclosed in an embodiment of the application;

[0027] Figure 16 The front view and top view of the single-edged type cutter of the third shape disclosed in the application embodiment.

[0028] Description of reference numerals:

[0029] 100-base,

[0030] 200-turntable, 210-shaft,

[0031] 300-cutter, 310-blade tip,

[0032] 400-turntable driving mechanism, 410-first power source, 420-first transmission member,

[0033] 500-cutter drive mechanism, 510-second power source, 520-second transmission member, 530-fourth gear,

[0034] 600-support parts,

[0035] 700-limiting pressure plate, 710-pressing convex part, 720-connecting part, 701-second pipe avoidance hole,

[0036] 800-Balance block, 900-Slewing bearing, P-Pipe. DETAILED DESCRIPTION

[0037] To make the purpose, technical solutions, and advantages of this application more clear, the technical solutions of this application will be clearly and completely described below in conjunction with the specific embodiments of this application and the corresponding drawings. Obviously, the embodiments described are only part of the embodiments of this application, not all of them. Based on the embodiments in this application, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of this application.

[0038] The technical solutions disclosed in various embodiments of the present application are described in detail below with reference to the accompanying drawings.

[0039] In order to solve the technical problem that pipe cutting equipment in the related art easily damages the pipes when cutting, an embodiment of the present application provides a pipe cutting equipment.

[0040] See Figures 1 to 16 The pipe cutting device disclosed in the embodiment of the present application includes a base 100, a turntable 200, a cutter assembly and a turntable drive mechanism 400, wherein:

[0041] The base 100 is the foundational component of the pipe cutting machine, providing a mounting base for the other components. Specifically, the turntable 200 and turntable drive mechanism 400 are both mounted on the base 100. The turntable 200 is rotatable, meaning it can rotate relative to the base 100. Specifically, the turntable 200 is mounted on the base 100 via a slewing bearing 900.

[0042] The turntable 200 is provided with a first pipe avoidance hole for allowing the pipe P to pass through. Of course, the base 100 is also provided with an avoidance area for allowing the pipe P to pass through, and the avoidance area should correspond to the first pipe avoidance hole.

[0043] The turntable drive mechanism 400 is used to drive the turntable 200 to rotate about the axis of the first pipe clearance hole. By controlling the turntable drive mechanism 400, the rotation of the turntable 200 can be controlled. Furthermore, with this structural layout, since the pipe P is inserted through the first pipe clearance hole, the turntable 200 effectively rotates around the pipe P, thus preventing interference between the turntable 200 and the pipe P.

[0044] The embodiment of the present application does not limit the specific structure of the turntable driving mechanism 400. Optionally, the turntable driving mechanism 400 may include a first power source 410. The first power source 410 is used to drive the turntable 200 to rotate. The first power source 410 may be a conventional motor.

[0045] Furthermore, the turntable driving mechanism 400 may further include a first transmission member 420, and the first power source 410 applies a driving action to the turntable 200 via the first transmission member 420. Specifically, Figures 1 to 3 As shown, the first transmission member 420 can be selected as the first gear, and the turntable 200 can be selected as the second gear, that is, the turntable 200 has outer gear teeth, the first gear is engaged with the turntable 200, and the first power source 410 drives the first gear to rotate, which can drive the turntable 200 to rotate.

[0046] In another embodiment, the first transmission member 420 can be optionally a rack, which is engaged with the turntable 200, and the first power source 410 is a linear drive device, such as a linear motor, a pneumatic telescopic member, etc. The first power source 410 drives the rack to move and drives the turntable 200 to rotate.

[0047] Optionally, the first pipe avoidance hole can be arranged at the center of the turntable 200, so that the turntable 200 and the first pipe avoidance hole are coaxially arranged, avoiding the eccentric rotation of the turntable 200, which is conducive to the layout of the driving relationship between the turntable drive mechanism 400 and the turntable 200.

[0048] like Figure 3 、 Figures 6 to 8 As shown, the cutter assembly includes multiple cutters 300 evenly arranged along the circumference of the first pipe avoidance hole and a cutter drive mechanism 500 that drives the multiple cutters 300 to rotate. The multiple cutters 300 are rotatably connected to the turntable 200, and the cutter drive mechanism 500 is used to drive the multiple cutters 300 to rotate simultaneously in the same clockwise direction. It should be understood that with this arrangement, the area surrounded by the cutter assembly becomes the cutting operation area, and the cutters 300 can cut the pipe P by cutting into it. Here, cutting into the pipe refers to the process in which the cutting end of the cutter 300 cuts into the pipe P until it penetrates the entire pipe wall.

[0049] Since the cutter 300 of the embodiment of the present application feeds in a clockwise direction under the drive of the cutter drive mechanism 500, the feed end of the cutter 300 can form an arc-shaped feed trajectory during the rotation process, thereby exerting a cutting effect on the circumference of the pipe along the feed trajectory. That is, during the feed process of the cutter 300 cutting the pipe P, the contact area between the feed end of the cutter 300 and the pipe P moves along the circumference of the pipe P, thereby preventing the cutter 300 from limiting the cutting effect on the pipe P to only one place.

[0050] The cutter driving mechanism 500 is used to drive the cutter 300 . By controlling the cutter driving mechanism 500 , the rotation of the cutter 300 can be controlled, thereby controlling the feed motion of the cutter 300 .

[0051] Because the cutter 300 is connected to the turntable 200, when the turntable 200 is driven to rotate, the cutter assembly as a whole can rotate along the circumference of the first pipe avoidance hole, thereby coordinating the cutter 300's movement along the arc-shaped feed trajectory to gradually cut the pipe P and sever the pipe P in the circumferential direction. Therefore, the cutter 300 of this embodiment of the present application has two rotational degrees of freedom when cutting the pipe P.

[0052] Compared with the related art method of cutting the pipe P along a straight feed trajectory, the pipe cutting equipment of the embodiment of the present application is based on an arc-shaped feed trajectory. The cutter 300 can simultaneously feed and gradually cut the pipe P during the circumferential rotation along the first pipe avoidance hole, thereby optimizing the distribution uniformity of the cutting effect to achieve the purpose of avoiding damage to the pipe P and optimizing the pipe cutting effect.

[0053] At the same time, driven by the cutter drive mechanism 500, the multiple cutters 300 rotate simultaneously in the same clockwise direction. In this case, the paths along which the feed ends of the cutters 300 cut into the pipe P are in the same direction and are evenly distributed, thereby ensuring that the cutting action of the cutter assembly on the pipe P is evenly distributed in the circumferential direction. Precisely because the multiple cutters 300 all feed in the same clockwise direction, the multiple cutters 300 are prevented from having multiple rotation directions and multiple feed paths, thereby preventing the problem of the pipe P being cut by the blade back of the cutter 300. In an optional solution, such as Figure 3 and Figure 5 As shown, the turntable 200 of the embodiment of the present application can rotate in the opposite direction to the cutter 300.

[0054] It should be understood that, since the cutter 300 of the embodiment of the present application realizes feeding by rotating, its feed end can form an arc-shaped feed trajectory during the rotation process, and during the rotation process of the cutter 300, its blade side is always facing the pipe P. Since the area to be cut of the pipe P is opposite to the blade of the cutter 300, and the cutter assembly as a whole rotates with the turntable 200, it will only rotate when the turntable 200 and the cutter 300 rotate in opposite directions, for example, Figure 3 As shown by the middle arrow, the turntable 200 rotates counterclockwise, while the cutter 300 rotates clockwise, so as to ensure that the blade of the cutter 300 always cuts the area to be cut of the pipe P. Otherwise, there will be a problem of cutting the pipe P with the back of the cutter 300.

[0055] Of course, the turntable 200 of the embodiment of the present application can also rotate in the same direction as the cutter 300. In this case, the blade side of the cutter 300 can be set in the opposite direction, and the effect of smoothly cutting the pipe P can be achieved at the same time.

[0056] In the embodiment of the present application, the specific driving relationship between the cutter drive mechanism 500 and the cutter assembly is not limited. For example, the cutter drive mechanism 500 may include multiple second power sources 510, and the second power sources 510 drive the cutter 300 to rotate one by one.

[0057] In another embodiment, Figure 3 As shown, the cutter drive mechanism 500 of the embodiment of the present application may include a second power source 510 and a plurality of second transmission members 520. The plurality of second transmission members 520 are evenly arranged along the circumference of the first pipe avoidance hole. The cutters 300 are arranged one by one on the second transmission members 520. The second transmission members 520 are rotatably arranged on the turntable 200. The second power source 510 is used to synchronously drive the plurality of second transmission members 520 to drive the plurality of cutters 300 to rotate.

[0058] Under this structural layout, the multiple second transmission members 520 are the synchronous transmission structure between the second power source 510 and the cutter 300. The second power source 510 synchronously drives the multiple second transmission members 520, thereby synchronously driving the multiple cutters 300 to rotate, which can obviously improve the consistency of the feed action of each cutter 300.

[0059] At the same time, compared with the solution of respectively setting up a second power source 510 for multiple cutters 300, the cutter drive mechanism 500 of the embodiment of the present application only realizes the simultaneous driving of each cutter 300 by setting up a second power source 510, which not only reduces the cost but also simplifies the structure of the cutter drive mechanism 500.

[0060] Further, if Figure 3 As shown, the second transmission member 520 of the embodiment of the present application is a third gear, and the cutter drive mechanism 500 can also include a plurality of fourth gears 530, and the plurality of fourth gears 530 are evenly arranged along the circumference of the first pipe avoidance hole, and a fourth gear 530 is provided between two adjacent third gears, and the fourth gear 530 is meshed with the third gears on both sides thereof; the second power source 510 is used to rotate one of the fourth gears 530.

[0061] Under this structural layout, when the second power source 510 drives a fourth gear 530 connected to it to rotate, the two third gears meshing with the fourth gear 530 will rotate accordingly, thereby driving the remaining fourth gears 530 and third gears to rotate in turn, thereby ensuring that all third gears rotate, and the cutter 300 thereon rotates accordingly to achieve feed.

[0062] It should be understood that since the fourth gear 530 is provided between each of the third gears, this ensures that the rotation direction of all the third gears is the same, thereby making the rotation direction of the cutter 300 the same. As mentioned above, this is obviously conducive to applying a cutting action uniformly distributed along the circumference to the pipe P.

[0063] Further, if Figure 3 As shown, the second transmission member 520 in this embodiment of the present application can be a sector gear that rotates around its apex. Because sector gears are more compact than full gears, this can reduce the space occupied by the second transmission member 520, thereby improving the compactness of the structure. Of course, this embodiment of the present application is not limited to the specific type of the second transmission member 520; it can also be a cylindrical gear.

[0064] Among the options, Figures 1 to 3 As shown, the pipe cutting device of the embodiment of the present application may further include a support member 600 , which is disposed between the second transmission member 520 and the turntable 200 to support the second transmission member 520 and achieve posture balance.

[0065] It should be understood that in order to ensure that the second transmission member 520 can rotate smoothly relative to the turntable 200, the second transmission member 520 and the turntable 200 are usually spaced apart to reserve a rotation gap, thereby reducing friction resistance and improving the smoothness of relative rotation. Figure 1 As shown, the second transmission member 520 can be rotatably engaged with the rotating shaft 210 on the turntable 200 and is spaced apart from the turntable 200 body.

[0066] In a structural layout where the second transmission member 520 is spaced apart from the turntable 200, there is a risk that the second transmission member 520 may tilt, which could significantly alter the feed trajectory of the cutter 300 mounted on the second transmission member 520, thereby impairing the pipe cutting effect. To address this issue, the support member 600 of the embodiment of the present application effectively supports the second transmission member 520 and ensures that the second transmission member 520 rotates within a horizontal plane, thereby ensuring that the cutter 300 feeds along a predetermined trajectory.

[0067] Among the options, Figure 1 、 Figure 2 and Figure 4 As shown, the pipe cutting equipment of the embodiment of the present application may further include a limiting pressure plate 700, which is connected to the turntable 200, and along the height direction of the pipe cutting equipment, the limiting pressure plate 700 is located on the upper side of the second transmission member 520, and the limiting pressure plate 700 is in contact with the second transmission member 520 to achieve posture balance.

[0068] It should be understood that when the second transmission member 520 is driven to rotate, it may move upward, and the cutter 300 mounted on the second transmission member 520 may also move accordingly, resulting in unstable cutting action of the cutter 300 and a change in the feed trajectory, thereby reducing the pipe cutting effect. To address this issue, the limiting pressure plate 700 of the embodiment of the present application can exert a limiting pressure above the second transmission member 520, thereby effectively preventing the second transmission member 520 from moving.

[0069] like Figure 3 As shown, in the embodiment where the cutter 300 is provided on the top surface of the second transmission member 520, the limiting pressure plate 700 of the embodiment of the present application may include a pressing protrusion 710 provided on its bottom surface, which contacts the second transmission member 520 through the pressing protrusion 710. Further, in order to increase the contact area, the pressing protrusion 710 may be a strip-shaped structural member, such as Figure 4 As shown, the pressing protrusion 710 is an arc-shaped pressing protrusion.

[0070] In addition, the bottom surface of the limiting pressure plate 700 may be provided with a connecting portion 720, which is connected to the rotating shaft 210 through a connection, thereby achieving a connection relationship with the turntable 200. Of course, the connecting portion 720 of the limiting pressure plate 700 can extend to the outer periphery of the second transmission member 520 and the rotating shaft 210 and be directly connected to the turntable 200.

[0071] Among the options, Figure 3 、 Figures 6 to 8 As shown, the limiting pressure plate 700 of the embodiment of the present application is provided with a second pipe avoidance hole 701 corresponding to the first pipe avoidance hole, and the limiting pressure plate 700 is in contact with multiple second transmission members 520; the second power source 510 is provided on the top surface of the limiting pressure plate 700, and the pipe cutting equipment also includes multiple balancing blocks 800 provided on the top surface of the limiting pressure plate 700, and the multiple balancing blocks 800 are arranged in a circumferential balance with the second pipe avoidance hole 701.

[0072] Specifically, the second pipe avoidance hole 701 is for the pipe P to pass through. The limiting pressure plate 700 is the installation base for the second power source 510 and the balancing block 800. As mentioned above, the limiting pressure plate 700 is used to exert a balancing effect on the balance posture of the plurality of second transmission members 520. If the second power source 510 causes the limiting pressure plate 700 itself to tilt, this will inevitably indirectly cause the second transmission member 520 and the cutter 300 to be deflected, and there is a problem that the cutter 300 cannot feed accurately. To address this problem, the plurality of balancing blocks 800 of the embodiment of the present application can be arranged in a circumferential balance with the second power source 510, thereby ensuring that the limiting pressure plate 700 maintains balance on the horizontal plane and ensures that it exerts a reliable balancing effect on the second transmission member 520.

[0073] Among the options, Figure 11 、 Figure 12 、 Figure 14 and Figure 15 As shown, the cutter 300 of the present embodiment has a mounting end and a feed end positioned opposite each other. The width of the cutter 300 gradually decreases from the mounting end to the feed end. With this arrangement, the feed end of the cutter 300 can be formed with a blade tip 310. During the feed process, the cutter 300 facilitates cutting into the pipe P through the blade tip 310, thereby improving pipe cutting efficiency.

[0074] Of course, the embodiment of the present application does not limit the specific structural type of the cutter 300. Figure 13 and Figure 16 As shown, the width of the cutter 300 can also be kept consistent along the direction from the mounting end to the feed end.

[0075] Among the options, Figure 5 and Figure 8As shown, the cutter 300 of the embodiment of the present application includes a blade tip 310 arranged at the feed end, and the blade tips 310 of multiple cutters 300 are evenly distributed on a circular ring with the center of the first pipe avoidance hole as the center of the circle, so as to ensure that the multiple cutters 300 exert a uniformly distributed cutting effect along the circumference of the pipe P.

[0076] Among them, such as Figure 5 As shown, the rotation angle of the blade tip 310 of the cutter 300 of the embodiment of the present application is A, and the value range of A can be 20° to 40°, and preferably 30°. It should be understood that, if Figure 8 As shown, within the range of the rotation angle A of the blade tip 310 , the blade tip 310 can form a maximum cutting track and a minimum cutting track, and the radial difference between the maximum cutting track and the minimum cutting track is the feed length of the blade tip 310 .

[0077] In the embodiment of the present application, the blade type of the cutter 300 is not limited, such as Figure 9 As shown, the cutter 300 is a double-edged type, and the double-edged type cutter 300 has a higher cutting efficiency. Figure 10 As shown, the cutter 300 is a single-edged type. Figure 11 and Figure 12 The cutters 300 shown are all double-edged types. Figures 13 to 16 The cutters 300 shown are all of the single edge type.

[0078] The above embodiments of this application focus on the differences between the various embodiments. As long as the different optimization features between the various embodiments are not contradictory, they can be combined to form a better embodiment. Considering the simplicity of the text, they will not be repeated here.

[0079] The foregoing is merely an embodiment of the present application and is not intended to limit the present application. For those skilled in the art, the present application may have various changes and variations. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principles of the present application should all be included within the scope of the claims of the present application.

Claims

1. A pipe cutting device, characterized in that: It comprises a base (100), a turntable (200), a cutter assembly, a turntable drive mechanism (400) and a limiting pressure plate (700), wherein: The turntable (200) and the turntable driving mechanism (400) are both arranged on the base (100), and the turntable (200) is rotatably arranged. The turntable (200) is provided with a first pipe avoidance hole, and the turntable driving mechanism (400) is used to drive the turntable (200) to rotate around the axis of the first pipe avoidance hole; The cutter assembly comprises a plurality of cutters (300) uniformly arranged along the circumference of the first pipe avoidance hole and a cutter drive mechanism (500) for driving the plurality of cutters (300) to rotate, wherein the plurality of cutters (300) are rotatably connected to the rotating disk (200), and the cutter drive mechanism (500) is used to drive the plurality of cutters (300) to rotate simultaneously in the same clockwise direction; The cutter drive mechanism (500) includes a second power source (510), a plurality of second transmission members (520) and a plurality of fourth gears (530), wherein the second transmission member (520) is a fan-shaped gear, the plurality of fan-shaped gears and the plurality of fourth gears (530) are uniformly arranged along the circumference of the first pipe avoidance hole, and a fourth gear (530) is provided between two adjacent fan-shaped gears, and the fourth gear (530) is meshed with the fan-shaped gears on both sides thereof; the cutters (300) are provided on the fan-shaped gears in a one-to-one correspondence, the fan-shaped gears are rotatably provided on the turntable (200), and the fan-shaped gears rotate around their apex portions; the second power source (510) is used to drive one of the fourth gears (530) to rotate, so as to synchronously drive the plurality of fan-shaped gears, thereby driving the plurality of cutters (300) to rotate; The limiting pressure plate (700) is connected to the turntable (200) and is located on the upper side of the sector gear along the height direction of the pipe cutting device. The limiting pressure plate (700) includes a plurality of pressing protrusions (710) provided on its bottom surface, and each pressing protrusion (710) is in contact with the sector gear corresponding thereto.

2. The pipe cutting device according to claim 1, characterized in that: The rotating disk (200) and the cutting knife (300) rotate in opposite directions.

3. The pipe cutting device according to claim 1, characterized in that: The pipe cutting device further comprises a support member (600), wherein the support member (600) is provided between the second transmission member (520) and the turntable (200) to support the second transmission member (520) and achieve posture balance.

4. The pipe cutting device according to claim 1, characterized in that: The limiting pressure plate (700) is provided with a second pipe avoidance hole (701) corresponding to the first pipe avoidance hole; the second power source (510) is provided on the top surface of the limiting pressure plate (700); the pipe cutting device further comprises a plurality of balancing blocks (800) provided on the top surface of the limiting pressure plate (700); the plurality of balancing blocks (800) and the second power source (510) are arranged in a circumferential balance along the second pipe avoidance hole (701).

5. The pipe cutting device according to claim 1, characterized in that: The cutter (300) has a mounting end and a feed end that are arranged opposite to each other, and the width of the cutter (300) gradually decreases along the direction from the mounting end to the feed end.

6. The pipe cutting device according to claim 5, characterized in that: The cutter (300) comprises a blade tip (310) provided at the feed end, and the blade tips (310) of the plurality of cutters (300) are evenly distributed on a circular ring with the center of the first pipe avoidance hole as the center.

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