Pipeline groove cutting equipment

Abstract

The utility model discloses pipeline groove cutting equipment. The pipeline groove cutting equipment comprises a fixed ring, a rotating ring, a driving device and two sets of cutter assemblies, the fixing ring is used for being fixedly installed on the outer side face of a pipeline, the rotating ring is connected with the fixing ring, the driving device is installed on the fixing ring, and the driving device is connected with the rotating ring and used for driving the rotating ring to rotate in the circumferential direction of the axis of the fixing ring. The two sets of cutter assemblies are installed on the end face, away from the fixed ring, of the rotating ring in a spaced mode, and the two sets of cutter assemblies are each provided with a cutter. Compared with a large pipeline beveling machine, the pipeline beveling machine can be suitable for a narrow operation space, the machining operation efficiency can be effectively guaranteed, and the operation safety can be improved.

Description

TECHNICAL FIELD

[0001] The utility model relates to pipeline machining equipment technical field especially relates to a pipeline groove cutting equipment. BACKGROUND

[0002] In pipeline engineering construction, full-automatic welding technology is applied more and more widely, and compared with semi-automatic welding and manual welding, full-automatic welding is more efficient. In construction, it is found that in the case of perfect equipment, to maintain the high efficiency of full-automatic welding, firstly, the high efficiency and high quality of pipeline end face groove shaping must be maintained. At present, in order to process high-quality automatic welding groove, a groove machine becomes an indispensable professional equipment in the process of pipeline replacement repair. The groove machine not only is simple to operate, but also can be processed and formed at one time, and the processing efficiency is high, and the processing efficiency is more than 20 times of milling machine and planer. Because of this, the groove machine is universally researched and applied in domestic and foreign pipeline construction. At present, the pipeline groove machine is mostly applied to the processing stage before pipeline welding, and the working position is generally located in the factory workshop, and the running space is often very sufficient, so the size is large, and it is not suitable for the working condition that the working space is narrow, especially when the large pipeline to be processed is in a narrow space and the weld is cut off for repair and the groove before welding again. The processing efficiency is low by manual processing, and there is danger in the narrow working space. SUMMARY

[0003] The technical problem to be solved by the utility model lies in providing a pipeline groove cutting equipment.

[0004] The utility model adopts the technical scheme that a pipeline groove cutting equipment is constructed, which comprises a fixing ring, a rotating ring, a driving device and two sets of cutter assemblies.

[0005] The fixing ring is used for being fixedly installed on the outer side surface of the pipeline, the rotating ring is connected with the fixing ring, the driving device is installed on the fixing ring, and the driving device is connected with the rotating ring and is used for driving the rotating ring to rotate along the circumferential direction of the axis of the fixing ring, and the two sets of cutter assemblies are spaced apart and installed on the end surface of the rotating ring away from the fixing ring, and the two sets of cutter assemblies are each provided with a cutting knife.

[0006] In some embodiments, the fixing ring is uniformly provided with a plurality of supporting legs in the circumferential direction, and the fixing ring is fixed to the outer side surface of the pipeline through the supporting legs.

[0007] In some embodiments, the circumferential outer side surface of the rotating ring is provided with a driving tooth, the driving device comprises a driving motor, a speed reducer and a gear connected in sequence, the gear is engaged with the driving tooth to drive the rotating ring to rotate.

[0008] In some embodiments, each set of the tool assembly comprises a base and a clamping block, the base has opposite first and second sides, the first side of the base is mounted on the end surface of the rotating ring away from the fixed ring; the second side of the base is provided with a first positioning groove and a second positioning groove, the first and second positioning grooves are communicatively arranged, and the second positioning groove is arranged close to the first side of the base; the opposite sides of the first positioning groove are each provided with a sliding groove, the clamping block is mounted in the first positioning groove, and the opposite sides of the clamping block are provided with limiting protrusions, the limiting protrusions are located in the sliding grooves; one end of the clamping block towards the first side of the base is provided with a mounting block, at least part of the mounting block protrudes from the side surface of the clamping block to extend into the second positioning groove, and the cutting tool is mounted on the clamping block.

[0009] In some embodiments, the sliding groove is a triangular columnar groove, and the limiting protrusion is a triangular columnar structure.

[0010] In some embodiments, the upper surface of the base is further provided with a first mounting groove and a second mounting groove that are in communication with each other, the first and second mounting grooves are arranged in a vertical direction and are in communication with each other;

[0011] The tool assembly further comprises a driving mechanism, the driving mechanism comprises a mounting plate, a driving gear and a driven gear, a star wheel, a screw and a nut, the mounting plate is mounted in the first mounting groove, the driving gear and the driven gear are mounted in the second mounting groove, and the driving gear and the driven gear are in meshing engagement with each other, the star wheel is mounted on the upper side surface of the mounting plate and is connected with the driving gear in an axial direction, the nut is mounted in the mounting block, the screw is connected with the driven gear, and the screw passes through a threaded hole of the nut;

[0012] The pipe bevel cutting device further comprises a linear module and an electric shifting lever, the linear module is mounted on the side surface of the speed reducer, the electric shifting lever is connected with the linear module, the electric shifting lever is telescopic to cooperate with the star wheel to control the feeding of the cutting tool.

[0013] In some embodiments, the base is further provided with a through hole, a proximity switch is arranged in the through hole, and the speed reducer is provided with a proximity switch triggering point towards the end surface of the base.

[0014] In some embodiments, the tool assembly comprises a linear displacement sensor, the linear displacement sensor is mounted on the outer side surface of the clamping block, and one end of the extension rod of the linear displacement sensor is mounted on the second side of the base through a connecting piece.

[0015] In some embodiments, the rotating ring is further provided with a monitoring camera, a wireless communication device and a power supply device on the end face away from the fixed ring.

[0016] In some embodiments, one set of the cutting tools of the tool assembly is a cutting-off tool, and the other set of the cutting tools of the tool assembly is a bevel tool.

[0017] The pipe bevel cutting device has the following beneficial effects: the entire pipe bevel cutting device can be fixedly installed on the outer side of the pipe through the fixed ring, the rotating ring is connected with the fixed ring, the driving device is installed on the fixed ring and connected with the rotating ring for driving the rotating ring to rotate along the circumferential direction of the axis of the fixed ring, thereby driving the two sets of tool assemblies to cut the pipe, compared with a large pipe bevel machine, the pipe bevel cutting device can be applied to a narrow working space, the working efficiency can be effectively ensured, and the working safety can be improved. BRIEF DESCRIPTION OF DRAWINGS

[0018] In order to more clearly illustrate the technical scheme of the utility model, the utility model will be further described below in combination with the drawings and embodiments. It should be understood that the following drawings only show some embodiments of the utility model, and therefore should not be regarded as a limitation on the scope. For those skilled in the art, other related drawings can also be obtained without creative labor. In the drawings:

[0019] Figure 1 is an application schematic diagram of the pipe bevel cutting device in some embodiments of the utility model;

[0020] Figure 2 is a structural schematic diagram of the pipe bevel cutting device in some embodiments of the utility model;

[0021] Figure 3 is a structural schematic diagram of the cooperation of the fixed ring and the rotating ring in some embodiments of the utility model;

[0022] Figure 4 is a structural schematic diagram of the driving device in some embodiments of the utility model;

[0023] Figure 5 is a partial structural schematic diagram of the pipe bevel cutting device in some embodiments of the utility model;

[0024] Figure 6 is a structural schematic diagram of the base in some embodiments of the utility model;

[0025] Figure 7 is a structural schematic diagram of the tool clamping block in some embodiments of the utility model;

[0026] Figure 8is a structural schematic view of the driving mechanism in some embodiments of the utility model. DETAILED DESCRIPTION

[0027] In order to have a clearer understanding of the technical features, objects and effects of the utility model, the specific implementation manners of the utility model will be described in detail with reference to the drawings. In the following description, it should be understood that the directions or position relations indicated by "front", "back", "upper", "lower", "left", "right", "vertical", "horizontal", "vertical", "horizontal", "top", "bottom", "inner", "outer", "head", "tail" and the like are based on the directions or position relations shown in the drawings, constructed and operated in a particular direction, and are only for the convenience of describing the technical scheme, and do not indicate that the indicated device or element must have a particular direction, so it cannot be understood as a limitation on the utility model.

[0028] It should also be noted that, unless otherwise explicitly specified and limited, the terms "mounting", "connection", "connection", "fixing", "setting" and the like should be understood broadly, for example, it can be fixedly connected, or it can be detachably connected, or it can be integrated; it can be mechanically connected, or it can be electrically connected; it can be directly connected, or it can be indirectly connected through an intermediate medium, or it can be the communication or interaction relationship between two elements. When an element is referred to as "on" or "under" another element, the element can be "directly" or "indirectly" located on the other element, or one or more intermediate elements can exist. The terms "first", "second", "third" and the like are only for the convenience of describing the technical scheme, and cannot be understood as indicating or implying relative importance or implicitly indicating the number of indicated technical features, therefore, the features with "first", "second", "third" and the like can be explicitly or implicitly included one or more features. For ordinary skilled persons in the art, the specific meaning of the above terms in the utility model can be understood according to the specific circumstances.

[0029] In the following description, specific details are presented to facilitate a thorough understanding of the embodiments of the utility model, but the utility model can also be implemented in other embodiments without these specific details. In other cases, detailed descriptions of well-known systems, devices, circuits and methods are omitted to avoid unnecessary details that hinder the description of the utility model.

[0030] Referring to Figures 1 to 8 The utility model shows a pipeline bevel cutting equipment, can be used for pipeline 100 bevel cutting, this pipeline 100 can include but not limited to nuclear power plant pipeline or other factory pipeline, this pipeline 100 can be include but not limited to large size pipeline etc.

[0031] The pipe bevel cutting device comprises a fixed ring 10, a rotating ring 20, a driving device 30 and two sets of cutter assemblies 40.

[0032] The fixed ring 10 is fixedly installed on the outer side of the pipe 100, the rotating ring 20 is connected with the fixed ring 10, the driving device 30 is installed on the fixed ring 10 and connected with the rotating ring 20 for driving the rotating ring 20 to rotate along the circumferential direction of the axis of the fixed ring 10, and the two sets of cutter assemblies 40 are installed on the end face of the rotating ring 20 away from the fixed ring 10, and each of the two sets of cutter assemblies 40 is provided with a cutting knife 43.

[0033] The entire pipe bevel cutting device can be fixedly installed on the outer side of the pipe 100 through the fixed ring 10, the rotating ring 20 is connected with the fixed ring 10, the driving device 30 is installed on the fixed ring 10 and connected with the rotating ring 20 for driving the rotating ring 20 to rotate along the circumferential direction of the axis of the fixed ring 10, thereby driving the two sets of cutter assemblies 40 to cut the pipe 100, compared with a large pipe beveling machine, it can be applied to a narrow working space, can effectively ensure the working efficiency, and can improve the working safety.

[0034] As shown in Figure 3 and Figure 4 , in some embodiments, the end face of the fixed ring 10 is provided with a clamping groove, the axial end of the rotating ring 20 is clamped in the clamping groove, and the circumferential outer side of the rotating ring 20 is provided with a driving tooth 21, and the fixed ring 10 is provided with a through groove so that the driving tooth 21 can be exposed therein. The driving device 30 can be fixed on the fixed ring 10 by a threaded connection, the driving device 30 can comprise a driving motor 31, a speed reducer 32 and a gear 33 connected in sequence, the gear 33 is engaged with the driving tooth 21 to drive the rotating ring 20 to rotate, and the gear 33 can be partially inserted into the through groove to engage with the driving tooth 21, and the driving tooth 21 can be a straight tooth.

[0035] In some embodiments, as shown in Figure 3 , a guide wheel 11 can be further arranged in the fixed ring 10 and matched with the inner side of the rotating ring 20, so that the rotating ring 20 rotates more smoothly. In addition, bearings can also be arranged at the matching position of the fixed ring 10 and the rotating ring 20, which are not limited here. In addition, the rotating ring 20 can be a whole ring structure or a plurality of arc segment structures spliced together, which are not limited here.

[0036] As shown in Figure 2 and Figure 3As shown, in some embodiments, the fixing ring 10 is uniformly provided with a plurality of legs 50 along the circumferential direction. The fixing ring 10 is fixed to the outer surface of the pipe 100 by the legs 50. The number of legs 50 can be six, and the coaxiality of the fixing ring 10 and the pipe 100 can be ensured by adjusting the extension of the legs 50. Preferably, the legs 50 can be cylindrical, and the contact surface between the legs 50 and the pipe 100 can be curved or spherical. Of course, the number, position, and shape of the legs 50 can be selected according to actual needs, and no specific limitation is made here.

[0037] like Figures 5 to 7 As shown, each tool assembly 40 includes a base 41 and a clamping block 42. The base 41 has a first side and a second side facing each other. The first side of the base 41 is mounted on the end face of the rotating ring 20 away from the fixed ring 10. Preferably, the end face of the rotating ring 20 away from the fixed ring 10 may be provided with a positioning mounting groove for positioning and mounting the tool assembly 40. The center line of the positioning mounting groove passes through the center of the rotating ring. The positioning mounting groove may be a square groove. The second side of the base 41 is provided with a first positioning groove 411 and a second positioning groove 412. The first positioning groove 411 and the second positioning groove 412 are connected. A 412 is provided near the first side of the base 41; a sliding groove 413 is provided on both opposite sides of the first positioning groove 411, the clamping block 42 is installed in the first positioning groove 411, and a limiting protrusion 421 is provided on both opposite sides of the clamping block 42. The limiting protrusion 421 is located in the sliding groove 413, thereby constraining the clamping block 42 to move linearly along the sliding groove 413; a mounting block 422 is provided at one end of the clamping block 42 facing the first side of the base 41, at least a portion of the mounting block 422 protrudes from the side of the clamping block 42 to extend into the second positioning groove 412, thereby limiting the left-right wobbling of the clamping block 42 when cutting the bevel. The cutting tool 43 is installed on the clamping block 42, such as Figure 7 As shown, the clamping block 42 may be provided with a clamping groove 423, and one end of the cutting tool 43 is fixed in the clamping groove 423. The clamping groove 423 may be a square groove structure.

[0038] In some embodiments, the slide 413 is a triangular columnar groove and the limiting protrusion 421 is a triangular columnar structure, thereby constraining the clamping block 42 to move linearly along the slide 413.

[0039] like Figures 5 to 8 As shown, in some embodiments, the upper surface of the base 41 is further provided with a first mounting groove 414 and a second mounting groove 415 that are interconnected. The first mounting groove 414 and the second mounting groove 415 are arranged vertically along the height direction and are interconnected.

[0040] The tool assembly 40 further comprises a driving mechanism 44, which comprises a mounting plate 441 mounted in the first mounting groove 414, a driving gear 442 and a driven gear 443 mounted in the second mounting groove 415 and engaged with each other to form a gear pair, a star wheel 444 mounted on the upper side of the mounting plate 441 and axially connected with the driving gear 442, a screw rod 445 and a nut 446, wherein the nut 446 is mounted in the accommodating groove 4221 provided with limiting holes at the upper and lower ends of the accommodating groove 4221 (as shown in Figure 7 FIG. 2), and the threaded hole of the nut 446 is in communication with the limiting holes. The screw rod 445 is connected with the driven gear 443 by a key, and the screw rod 445 passes through the threaded hole of the nut 446.

[0041] The pipe bevel cutting device further comprises a linear module 60 mounted on the side of the speed reducer 32 and an electric push rod 70 connected with the linear module 60. The electric push rod 70 is retractable to cooperate with the star wheel 444 to control the feeding of the cutting tool 43. The electric push rod 70 has the same height as the star wheel 444.

[0042] When the rotating ring 20 operates and the electric push rod 70 is extended, the star wheel 444 will interfere with the electric push rod 70 to rotate, thereby driving the driving gear 442 to rotate, the driving gear 442 drives the driven gear 443 to rotate, and the driven gear 443 drives the screw rod 445 to rotate, thereby driving the nut 446 to move downward. Under the driving of the nut 446, the clamping block 42 moves downward to drive the cutting tool 43 to feed downward. When the electric push rod 70 is retracted, the star wheel 444 does not interfere with the electric push rod 70 when passing through the electric push rod 70, so that the cutting tool 43 does not feed. Therefore, whether the cutting tool 43 feeds or not is controlled by whether the electric push rod 70 is extended or not.

[0043] As shown in Figure 2 In some embodiments, one set of the cutting tools 43 of the tool assembly 40 is a cutting-off tool (as shown in the lower cutting tool 43 in Figure 2 , and the other set of the cutting tools 43 of the tool assembly 40 is a bevel tool (as shown in the upper cutting tool 43 in Figure 2 ). Understandably, the cutting tools 43 are divided into cutting-off tools and bevel tools, which are respectively mounted in the clamping blocks 42 in the two tool assemblies 40. When the pipe bevel cutting device operates, the cutting-off tool first cuts the material in the middle of the bevel, and then the bevel tool cuts the materials on both sides of the bevel to form the bevel. Of course, the type of the cutting tool 43 can be selected and arranged according to actual needs, which is not specifically limited here.

[0044] As Figure 5 shown, in some embodiments, the base 41 is further provided with a through hole 416, and a proximity switch 45 is arranged in the through hole 416. The proximity switch trigger point 321 of the speed reducer 32 is arranged towards the end face of the base 41. The proximity switch 45 is arranged towards the speed reducer 32, and the proximity switches 45 of the two sets of tool assemblies 40 are not the same. Understandably, the information emitted by the proximity switches 45 of the two sets of tool assemblies 40 after triggering is different, so that the two sets of tool assemblies 40 can be distinguished by the information emitted by the proximity switches 45. Specifically, the height of the proximity switch trigger point 321 is the same as that of the proximity switch 45. When the rotary ring 20 rotates, the proximity switch 45 is triggered each time it passes the proximity switch trigger point 321. The control device can be informed of the triggering information through the wireless communication device 82. The control device can know whether the first set of tool assemblies 40 or the second set of tool assemblies 40 passes the proximity switch trigger point 321 according to the obtained information. When a certain tool assembly 40 needs to be fed or not fed, the control device can receive the triggering information of the proximity switch 45 in the tool assembly 40 when the tool assembly 40 passes the proximity switch trigger point 321. Before the tool assembly 40 passes the proximity switch trigger point 321, the control device can control the electric lever 70 to extend or retract, so as to achieve the purpose of controlling whether a certain tool assembly 40 is fed.

[0045] As Figure 5 shown, in some embodiments, the tool assembly 40 comprises a linear displacement sensor 46, which is installed on the outer side of the tool clamping block 42, and one end of the extension rod 461 of the linear displacement sensor 46 is installed on the second side of the base 41 through a connecting piece 47. The connecting piece 47 can be a T-shaped connecting piece. The linear displacement sensor 46 can be used to measure the feeding amount of the cutting tool 43 and transmit the feeding amount data to the control device through the wireless communication device 82.

[0046] As Figure 1 and Figure 2 shown, in some embodiments, the pipe bevel cutting device further comprises electrical devices 80, such as a monitoring camera 81, a wireless communication device 82, a power supply device 83, and a control device. The control device can be arranged on the fixed ring 10, or the control device can be arranged outside the fixed ring 10, which can be in communication connection with the monitoring camera 81, the driving device 30, the proximity switch 45, the linear displacement sensor 46, the electric lever 70, etc. through the wireless communication device 82. The control device can include but is not limited to a PLC industrial computer.

[0047] The end face of the rotary ring 20 away from the fixed ring 10 is further provided with a monitoring camera 81, a wireless communication device 82, and a power supply device 83.

[0048] Specifically, in some embodiments, the rotating ring 20 is further provided with a monitoring camera 81 on the end face away from the fixed ring 10. Preferably, the monitoring camera 81 can be installed on one side of the tool assembly 40 for monitoring the working state of the tool assembly 40 and the groove cutting condition. The monitoring camera 81 includes but is not limited to an industrial camera. The number and position of the monitoring camera 81 can be selected according to actual needs, which are not limited here.

[0049] In some embodiments, the rotating ring 20 is further provided with a wireless communication device 82 on the end face away from the fixed ring 10. The wireless communication device 82 can be used to receive image information of the monitoring camera 81, data information of the proximity switch 45 and / or linear displacement sensor 46 data information, etc., such as images taken by the monitoring camera 81, feeding information of the cutting tool 43, etc., and upload to the control device. The wireless communication device 82 includes but is not limited to WIFI module, ZigBee module, LoRa, NB-IoT, Bluetooth, etc.

[0050] In some embodiments, the rotating ring 20 is further provided with a power supply device 83 on the end face away from the fixed ring 10. The power supply device 83 can be a battery including but not limited to a battery. The role of the battery is to supply power to the electronic equipment on the rotating ring 20 such as the monitoring camera 81. The setting of the wireless communication device 82 and the power supply device 83 can solve the wiring problem of the electronic equipment on the rotating ring 20, greatly reduce the number of lines of the pipeline groove cutting equipment, reduce the difficulty and workload of wiring, and shorten the installation and arrangement time of the pipeline groove cutting equipment in the early stage. Of course, in other embodiments, if the wiring problem is not considered, the above-mentioned electrical device 80 can also not be set, which is not limited here.

[0051] The pipeline groove cutting equipment has the following beneficial effects: the components of the pipeline groove cutting equipment are arranged along the circumferential direction and the axial direction of the pipeline 100, which minimizes its size in the radial direction of the pipeline 100, so that the pipeline groove cutting equipment can be applied to the working condition that the pipeline 100 to be machined is located in a limited space or is very close to the adjacent pipeline 100, greatly expanding the application range of the pipeline groove cutting equipment.

[0052] Compared with the existing large pipeline groove cutting machine, the pipeline groove cutting equipment is small in size, convenient to install, and can observe the groove cutting condition through the monitoring camera 81 and other observation devices, and then control whether the cutting-off tool and the groove tool are fed, greatly reducing the time of the workers staying in the groove machining site. For the pipeline groove machining in the high radiation area of the nuclear power plant, the radiation dose of the workers can be greatly reduced, and the safety risk can be reduced.

[0053] It can be understood that the above embodiments only express the preferred embodiments of the utility model, the description is more specific and detailed, but it can not be understood as the limitation of the utility model patent scope; it should be pointed out that for ordinary skilled person in the art, the above technical features can be freely combined without departing from the concept of the utility model, and a number of modifications and improvements can be made, which belong to the protection scope of the utility model; therefore, any equivalent transformation and modification within the scope of the utility model patent claim should belong to the scope of the utility model patent claim.

Claims

1. A pipe bevel cutting apparatus, characterized by, The utility model relates to a cutting device for pipe, which comprises a fixed ring (10), a rotating ring (20), a driving device (30) and two sets of cutter assemblies (40). The fixed ring (10) is used for being fixedly installed on the outer side of a pipe (100), the rotating ring (20) is connected with the fixed ring (10), the driving device (30) is installed on the fixed ring (10), and the driving device (30) is connected with the rotating ring (20) for driving the rotating ring (20) to rotate along the circumferential direction of the axis of the fixed ring (10), and two sets of the cutter assemblies (40) are installed on the end face of the rotating ring (20) away from the fixed ring (10) in a spaced manner, and each of the two sets of cutter assemblies (40) is provided with a cutting tool (43).

2. The pipe bevel cutting apparatus of claim 1, wherein, The fixed ring (10) is uniformly provided with a plurality of supporting legs (50) in the circumferential direction, and the fixed ring (10) is fixed to the outer side of the pipe (100) through the supporting legs (50).

3. The pipe bevel cutting apparatus of claim 1, wherein, The circumferential outer side of the rotating ring (20) is provided with a driving tooth (21), the driving device (30) comprises a driving motor (31), a speed reducer (32) and a gear (33) connected in sequence, the gear (33) is engaged with the driving tooth (21) to drive the rotating ring (20) to rotate.

4. The pipe bevel cutting apparatus of claim 3, wherein, Each of the cutter assemblies (40) comprises a base (41) and a cutter clamping block (42), the base (41) has opposite first and second side faces, the first side face of the base (41) is installed on the end face of the rotating ring (20) away from the fixed ring (10), the second side face of the base (41) is provided with a first positioning groove (411) and a second positioning groove (412), the first and second positioning grooves (411, 412) are communicatively arranged, and the second positioning groove (412) is arranged close to the first side face of the base (41), the opposite sides of the first positioning groove (411) are each provided with a sliding groove (413), the cutter clamping block (42) is installed in the first positioning groove (411), the opposite sides of the cutter clamping block (42) are provided with limiting protrusions (421), the limiting protrusions (421) are located in the sliding grooves (413), one end of the cutter clamping block (42) towards the first side face of the base (41) is provided with a mounting block (422), at least part of the mounting block (422) protrudes from the side face of the cutter clamping block (42) to extend into the second positioning groove (412), and the cutting tool (43) is installed on the cutter clamping block (42).

5. The pipe bevel cutting apparatus of claim 4, wherein, The sliding grooves (413) are triangular columnar grooves, and the limiting protrusions (421) are triangular columnar structures.

6. The pipe bevel cutting apparatus of claim 4, wherein, The upper surface of the base (41) is further provided with a first mounting groove (414) and a second mounting groove (415) in communication with each other, the first and second mounting grooves (414, 415) are arranged in a vertical relationship in the height direction and are in communication with each other, and the first and second mounting grooves (414, 415) are used for mounting the driving motor (31) and the speed reducer (32). The cutter assembly (40) further comprises a driving mechanism (44), the driving mechanism (44) comprises a mounting plate (441), a driving gear (442) and a driven gear (443), a star wheel (444), a screw rod (445) and a nut (446), the mounting plate (441) is mounted in the first mounting groove (414), the driving gear (442) and the driven gear (443) are mounted in the second mounting groove (415), and the driving gear (442) and the driven gear (443) are engaged with each other, the star wheel (444) is mounted on the upper side of the mounting plate (441), and the star wheel (444) is connected with the driving gear (442) in the shaft, the nut (446) is mounted in the mounting block (422), the screw rod (445) is connected with the driven gear (443), and the screw rod (445) is arranged in the threaded hole of the nut (446); The pipeline bevel cutting device further comprises a linear module (60) and an electric shifting lever (70), the linear module (60) is mounted on the side of the speed reducer (32), the electric shifting lever (70) is connected with the linear module (60), the electric shifting lever (70) is telescopic to cooperate with the star wheel (444) to control the cutting tool (43) to feed.

7. The pipe bevel cutting apparatus of claim 4, wherein, The base (41) is further provided with a through hole (416), the through hole (416) is provided with a proximity switch (45), and the end surface of the speed reducer (32) facing the base (41) is provided with a proximity switch trigger point (321).

8. The pipe bevel cutting apparatus of claim 4, wherein, The cutter assembly (40) comprises a linear displacement sensor (46), the linear displacement sensor (46) is mounted on the outer side of the cutter block (42), and one end of the extension rod (461) of the linear displacement sensor (46) is mounted on the second side of the base (41) through a connecting piece (47).

9. The pipe bevel cutting apparatus of claim 1, wherein, The end surface of the rotary ring (20) away from the fixed ring (10) is further provided with a monitoring camera (81), a wireless communication device (82) and a power supply device (83).

10. The pipe bevel cutting apparatus of any one of claims 1 to 9, wherein, One set of cutting tools (43) of the cutter assembly (40) is a cutting tool, and the other set of cutting tools (43) of the cutter assembly (40) is a bevel tool.

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