A rotary pipe beveling cutting machine

Abstract

The present invention discloses a rotary pipe bevel cutting machine, which belongs to the technical field of pipe bevel cutting, and comprises a power device, a rotary support device, a synchronous clamping device and a synchronous feed cutting device, wherein the synchronous clamping device and the synchronous feed cutting device are both arranged on the rotary support device; the synchronous cutting device comprises a synchronous drive box connected to the power device, wherein the side of the synchronous drive box is provided with at least two connecting guide rail mechanisms arranged on the rotary support device, wherein the output end of the synchronous drive box is connected with a rotating transmission mechanism through a universal joint, wherein the rotating transmission mechanism is connected with a feed assembly on a knife seat, wherein the knife seat is arranged on the connecting guide rail mechanism, and an elastic fitting mechanism is arranged on the knife seat. By adopting the above rotary pipe bevel cutting machine, synchronous feed is realized for bevel processing, and processing quality is ensured, and at the same time, the overall device is small in size, small in volume, and low in cost.

Description

Technical Field

[0001] The invention relates to the technical field of pipeline bevel cutting, in particular to a rotary pipeline bevel cutting machine. Background Art

[0002] At present, more and more oil and natural gas are transported by pipelines. In the pipeline transportation that stretches for hundreds of miles, pipeline welding is a necessary means of connecting pipelines. In pipeline welding, the pipeline end face welding groove must be processed. The existing groove cutting equipment adopts internal expansion positioning or external clamping positioning, and the tool holder is installed on the cutter head. The cutter head relies on the rotation of the hydraulic motor and the inlet of the hydraulic cylinder for cutting. The internal expansion positioning groove cutting machine has the disadvantages of large size and heavy weight, which increases the equipment cost. In addition, due to the internal expansion positioning, it is difficult to operate and cut short pipes, various three-way pipe fittings and various elbow pipe fittings. After searching, the patent with application number CN201820100284.5 discloses an external clamp type pipe cutting and beveling equipment. The proposed external clamp type pipe cutting and beveling equipment has two-half pipe clamps, one end of which is hinged as a whole; a large gear ring coaxially arranged with the two-half pipe clamps is fixed on the two-half pipe clamps, and the large gear ring is meshed with the gear at the output end of the rotating mechanism; a limiting cover connected to the two-half pipe clamps is arranged on one side; the large gear ring and the limiting cover are respectively arranged on both sides of the two-half pipe clamps; a centering mechanism for centering the pipe to be cut is arranged on the two-half pipe clamps; the external clamp type pipe cutting and beveling equipment is also provided with a cutting mechanism; the cutting mechanism is two sets symmetrically arranged; the cutting mechanism is provided with a floating structure for making the cutting mechanism in real-time contact with the pipe to be cut. The defects of misalignment and deflection of the pipe mouth after cutting are reduced, and the efficiency of pipeline laying is improved. However, the following problems still exist:

[0003] (1) Two sets of cutting mechanisms are used, and the cutting mechanisms are arranged on the large gear ring. Since the two sets of cutting mechanisms work independently, it is easy for the cutting mechanisms to be out of sync, which affects the processing efficiency and quality.

[0004] (2) According to the actual pipe size and groove requirements, when actually processing the groove, the position of the groove cutting machine needs to be adjusted, and the operation is complicated.

[0005] (3) A large amount of waste debris will be generated during the beveling process at the construction site. The waste debris will fall to the ground or remain in the pipeline, and the waste debris in the pipeline needs to be cleaned. Summary of the invention

[0006] The purpose of the present invention is to provide a rotary pipe beveling cutting machine to solve the above technical problems.

[0007] To achieve the above-mentioned purpose, the present invention provides a rotary pipe bevel cutting machine, comprising a power device, a rotary support device, a synchronous clamping device and a synchronous feed cutting device, wherein the synchronous clamping device and the synchronous feed cutting device are both arranged on the rotary support device; the synchronous cutting device comprises a synchronous drive box connected to the power device, the side of the synchronous drive box is provided with at least two connecting guide rail mechanisms arranged on the rotary support device, the output end of the synchronous drive box is connected to a rotating transmission mechanism through a universal joint, the rotating transmission mechanism is connected to the feed assembly on the tool holder, the tool holder is arranged on the connecting guide rail mechanism, and an elastic fitting mechanism is arranged on the tool holder.

[0008] Preferably, the slewing support device comprises a fixed support ring and a rotating gear ring, the fixed support ring and the rotating gear ring are rotatably connected via a bearing, and a plurality of arc-shaped support pressing blocks are arranged between the fixed support ring and the rotating gear ring, and an anti-wear layer is arranged at the contact end between the arc-shaped support pressing block and the rotating gear, a rotating drive motor is arranged on the fixed support ring, and the rotating drive motor is meshed with the rotating gear ring via a gear, and at least one pipeline positioning plate and a lifting ring are arranged on the fixed support ring, the lifting ring is used to connect the lifting equipment, and a plurality of positioning through holes are opened on the pipeline positioning plate for fixing the hydraulic pipeline of the power device;

[0009] The rotary drive motor is connected to the power device.

[0010] Preferably, the synchronous clamping device comprises a synchronous drive ring arranged in the fixed support ring, the synchronous drive ring is provided with a plane spiral protrusion, a clamping gear ring is arranged on the outer side of the synchronous drive ring, a clamping drive motor is arranged on the fixed support ring, the clamping drive motor is meshed with the clamping gear ring through a gear, a plurality of circumferentially distributed radial grooves are opened on one side of the fixed support ring, a clamping seat is arranged in the radial groove, an arc groove meshing with the plane spiral protrusion is arranged at the bottom of the clamping seat, and a clamping claw for clamping the pipe is arranged at the outer end of the clamping seat;

[0011] The clamping drive motor is connected to the power device.

[0012] Preferably, the synchronous drive box includes a protective box body, a rotary joint is arranged on the top of the protective box body, the rotary joint is connected to the power device, a synchronous feed drive motor is arranged in the middle of the bottom of the protective box body, the synchronous feed drive motor is connected to the rotary joint, and a protective side plate is also arranged at the bottom of the protective box body;

[0013] The output end of the synchronous feed drive motor is provided with a driving bevel gear, which meshes with at least two driven bevel gears. The driven bevel gear is installed in the protective box through a bearing seat, and the rotating shaft of the driven bevel gear is connected to one end of the universal joint through a coupling.

[0014] Preferably, the connecting guide rail mechanism includes a mounting plate, one end of which is connected to the protective side plate, and the other end of the mounting plate is fixed to the rotating gear ring through a base plate, and at least one guide column is arranged on the inner side of the mounting plate; a protective shell is arranged on the upper side of the mounting plate, and the universal joint is arranged in the protective shell.

[0015] Preferably, the rotation transmission mechanism includes a worm wheel and a worm that mesh with each other, and the worm wheel and the worm are both arranged in a protective shell. One end of the worm is connected to the other end of the universal joint, and the other end of the worm is installed on the protective shell through a bearing. The worm is meshed with the worm wheel.

[0016] Preferably, the tool holder is slidably arranged on the guide column, a feed track is arranged on the side of the tool holder, a feed assembly is slidably arranged on the feed track, the feed assembly includes a feed block, a cutting knife is arranged at the bottom of the feed block, the feed block is arranged on the feed screw, and the feed screw passes through the protective shell and is connected to the worm gear.

[0017] Preferably, the elastic fitting mechanism includes a supporting roller fixed on the feed block, an adjusting spring is sleeved on the guide column, one end of the adjusting spring is connected to a slide plate, the slide plate is sleeved on the guide column, a mounting hole of the linear part is opened on the mounting plate, the mounting hole is connected to a limit baffle by bolts, the slide plate is in contact with the limit baffle, and the other end of the adjusting spring is in contact with the knife seat.

[0018] Preferably, it also includes an axial limiting device, which includes an axial adjustment mechanism and a radial adjustment mechanism;

[0019] The axial adjustment mechanism includes an axial drive motor arranged at the bottom of the protection box body, the axial drive motor is meshed with an axial movable rack through a gear, the axial movable rack is slidably arranged on the inner side of the protection side plate, and at least one guide connecting plate is slidably connected to the inner side of the protection side plate;

[0020] The radial adjustment mechanism comprises a mounting ring, an annular receiving groove is arranged on the inner side of the mounting ring, a driving ring is arranged in the annular receiving groove, a limiting convex ring is arranged on the lower side of the driving ring, the limiting convex ring is arranged in the limiting groove in the annular receiving groove, an inner gear ring and an outer gear ring are arranged on the inner side and the outer side of the driving ring respectively, the outer gear ring is connected to the radial adjustment driving motor through a gear, the radial adjustment driving motor is installed on the limiting ring, a plurality of linkage gears meshing with the inner gear ring are distributed on the circumference of the limiting ring, and the linkage gears mesh with the limiting rack slidably arranged on the limiting ring;

[0021] The guide connecting plate and one end of the axially movable rack are both arranged in the guide ring groove of the limiting ring.

[0022] Preferably, it also includes a waste cleaning mechanism, which includes an arc-shaped cleaning brush, which is arranged on the top of the limiting rack through an elastic telescopic rod, the elastic telescopic rod includes a fixed rod and a telescopic rod, one end of the telescopic rod is fixed to the inside of the fixed rod by a spring, and the other end of the telescopic rod is fixed with an arc-shaped cleaning brush, and a cleaning gear ring is arranged on the outside of the limiting ring, and the cleaning gear ring is meshed with the cleaning drive motor on the guide connecting plate through a gear.

[0023] Therefore, the present invention adopts the above-mentioned rotary pipe bevel cutting machine, which has the following beneficial effects:

[0024] (1) The synchronous cutting device includes a synchronous driving box connected to a power device, and at least two connecting guide rail mechanisms arranged on the side of the synchronous driving box are arranged. The output end of the synchronous driving box is connected to a rotating transmission mechanism through a universal joint, and the rotating transmission mechanism is connected to a feed assembly on a tool holder. The tool holder is arranged on the connecting guide rail mechanism, and an elastic fitting mechanism is arranged on the tool holder, so that multiple feed assemblies can feed at the same time, thereby ensuring processing quality and processing efficiency.

[0025] (2) An axial limiting device includes an axial adjustment mechanism and a radial adjustment mechanism, which can limit the rotary pipe beveling cutting machine when connecting pipes, and is easy to operate.

[0026] (3) A waste cleaning mechanism is provided to clean the waste in the pipeline after the groove is completed, so as to facilitate the subsequent welding operation.

[0027] The technical solution of the present invention is further described in detail below through the accompanying drawings and embodiments. BRIEF DESCRIPTION OF THE DRAWINGS

[0028] Figure 1 This is a structural schematic diagram of a rotary pipe beveling cutting machine of the present invention;

[0029] Figure 2 A top view of a rotary pipe beveling cutting machine according to the present invention;

[0030] Figure 3 This is a schematic diagram of the structure of the fixed support ring of the present invention;

[0031] Figure 4 It is a schematic diagram of the local structure of the synchronous drive ring of the present invention;

[0032] Figure 5 This is a schematic diagram of the structure of the synchronous drive box of the present invention;

[0033] Figure 6 It is a schematic diagram of the structure of the knife holder and the connecting guide rail mechanism of the present invention;

[0034] Figure 7 It is a schematic diagram of the structure of the axial limit device of the present invention;

[0035] Figure 8 Schematic diagram of the radial adjustment mechanism structure of the present invention

[0036] Fig. 9 It is a partial cross-sectional view of the radial adjustment mechanism of the present invention.

[0037] Reference numerals

[0038] 1. Rotary support device; 11. Fixed support ring; 12. Rotating gear ring; 13. Arc support pressure block; 14. Rotating drive motor; 15. Pipe positioning plate; 16. Lifting ring; 17. Radial slide groove; 18. Positioning through hole; 2. Synchronous clamping device; 21. Synchronous drive ring; 211. Planar spiral protrusion; 212. Clamping gear ring; 22. Clamping drive motor; 23. Clamping seat; 24. Clamping claw; 3. Synchronous feed cutting device; 31. Synchronous drive box; 311. Protective box; 312. Rotating joint; 313. Synchronous feed drive motor; 314. Protective side plate; 315. Active bevel gear; 316. Driven bevel gear; 32. Connecting guide rail mechanism; 321. Mounting plate; 322. Base plate; 323. Guide column; 324. Protective shell; 325. Mounting hole; 3 3. Universal joint; 34. Rotation transmission mechanism; 341. Worm gear; 342. Worm; 35. Knife holder; 351. Feed track; 36. Feed assembly; 361. Feed block; 362. Cutting knife; 363. Feed screw; 37. Elastic fitting mechanism; 371. Support roller; 372. Adjustment spring; 373. Slide plate; 374. Limit baffle; 4. Axial adjustment mechanism; 41. Axial drive motor; 42. Axially movable rack; 43. Guide connecting plate; 5. Radial adjustment mechanism; 51. Mounting ring; 52. Drive ring; 53. Inner gear ring; 54. Outer gear ring; 55. Radial adjustment drive motor; 56. Interlocking gear; 57. Limit rack; 6. Waste cleaning mechanism; 61. Arc cleaning brush; 62. Elastic telescopic rod; 63. Cleaning gear ring; 64. Cleaning drive motor. DETAILED DESCRIPTION

[0039] In the description of the present invention, it should be noted that the terms "upper", "lower", "inside", "outside", etc. indicate positions or positional relationships based on the positions or positional relationships shown in the accompanying drawings, or the positions or positional relationships in which the invented product is usually placed when in use. They are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present invention. In the description of the present invention, it should also be noted that, unless otherwise clearly specified and limited, the terms "set", "install", and "connect" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be an indirect connection through an intermediate medium, or it can be a connection between the two elements. For those of ordinary skill in the art, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0040] The embodiments of the present invention are described in detail below in conjunction with the accompanying drawings.

[0041] Example 1

[0042] like Figure 1-Figure 2 As shown, a rotary pipe bevel cutting machine comprises a power device, a rotary support device 1, a synchronous clamping device 2 and a synchronous feed cutting device 3. The power device of this embodiment is a hydraulic source power device (not shown in the figure), which provides hydraulic power for the rotary pipe bevel cutting machine.

[0043] The synchronous clamping device 2 and the synchronous cutting device 3 are both arranged on the rotary support device 1. The rotary support device 1 includes a fixed support ring 11 and a rotating gear ring 12. Figure 3 As shown, the fixed support ring 11 is connected to the rotating gear ring 12 by bearings, so that the fixed support ring 11 and the rotating gear ring 12 are connected in rotation. A plurality of arc-shaped support blocks 13 are arranged between the fixed support ring 11 and the rotating gear ring 12, and an anti-wear layer is arranged at the contact end of the arc-shaped support blocks 13 and the rotating gear to prevent the fixed support ring 11 from being damaged during the rotation of the rotating gear ring 12. At the same time, only the arc-shaped support blocks 13 need to be replaced during maintenance, so as to reduce maintenance costs. A rotary drive motor 14 is arranged on the fixed support ring 11, and the rotary drive motor 14 is meshed with the rotating gear ring 12 through gears. The rotary drive motor 14 is connected to the power device to provide power for the rotation of the rotating gear ring 12. Two pipeline positioning plates 15 and three lifting rings 16 are arranged on the fixed support ring 11. The lifting ring 16 is used to connect the lifting equipment. When the pipeline is beveled, the rotary pipeline bevel cutting machine is lifted to the pipeline port to be processed by the lifting equipment. A plurality of positioning through holes 18 are provided on the pipeline positioning plate 15 for fixing the hydraulic pipeline of the power device to prevent the hydraulic pipeline from moving and winding when the rotating gear ring 12 rotates.

[0044] The synchronous clamping device 2 includes a synchronous drive ring 21 arranged in the fixed support ring 11, such as Figure 4 As shown, a planar spiral protrusion 211 is provided on the synchronous drive ring 21, a clamping gear ring 212 is provided on the outer side of the synchronous drive ring 21, the clamping drive motor 22 is meshed with the clamping gear ring 212 through gears, a plurality of circumferentially distributed radial grooves 17 are provided on one side of the fixed support ring 11, a holder 23 is provided in the radial groove 17, an arc groove meshed with the planar spiral protrusion 211 is provided at the bottom of the holder 23, a claw 24 for clamping the pipe is provided at the outer end of the holder 23, a clamping drive motor 22 is provided on the fixed support ring 11, the clamping drive motor 22 is connected to the power device to provide power for the clamping drive motor 22, the clamping drive motor 22 drives the synchronous drive ring 21 to rotate through the gear, so that the planar spiral protrusion 211 drives the holder 23 to move along the radial groove 17, thereby realizing the synchronous clamping and release of the pipe.

[0045] like Figure 5-Figure 6As shown, the synchronous cutting device includes a synchronous drive box 31 connected to the power device, and the synchronous drive box 31 includes a protective box 311. A rotary joint 312 is arranged on the top of the protective box 311, and the rotary joint 312 is connected to the power device. A synchronous feed drive motor 313 is arranged in the middle of the bottom of the protective box 311, and the synchronous feed drive motor 313 is connected to the rotary joint 312, so that the rotation of the protective box 311 does not affect the delivery of hydraulic oil. A protective side plate 314 is also arranged at the bottom of the protective box 311 to protect the synchronous feed drive motor 313. An active bevel gear 315 is arranged at the output end of the synchronous feed drive motor 313, and the active bevel gear 315 is meshed with at least two driven bevel gears 316. In this embodiment, three driven bevel gears 316 are arranged, and the driven bevel gear 316 is installed in the protective box 311 through a bearing seat, and the rotating shaft of the driven bevel gear 316 is connected to one end of the universal joint 33 through a coupling. The side of the synchronous drive box 31 is provided with three connecting rail mechanisms 32 arranged on the slewing support device 1, and the connecting rail mechanism 32 includes a mounting plate 321, one end of the mounting plate 321 is connected to the protective side plate 314, and the other end of the mounting plate 321 is fixed to the rotating gear ring 12 through the base plate 322. Two guide columns 323 are arranged inside the mounting plate 321 for installing the tool holder 35. A protective shell 324 is arranged on the upper side of the mounting plate 321, and the universal joint 33 is arranged in the protective shell 324 for protecting the universal joint 33. The output end of the synchronous drive box 31 is connected to a rotation transmission mechanism 34 through a universal joint 33. The rotation transmission mechanism 34 includes a worm wheel 341 and a worm 342 that mesh with each other. The worm wheel 341 and the worm 342 are both arranged in a protective shell 324. One end of the worm 342 is connected to the other end of the universal joint 33. The other end of the worm 342 is installed on the protective shell 324 through a bearing. The worm 342 meshes with the worm wheel 341 to transmit the rotation of the synchronous feed drive motor 313 to the worm wheel 341. The knife seat 35 is slidably arranged on the guide column 323. A feed track 351 is arranged on the side of the knife seat 35. A feed assembly 36 is slidably arranged on the feed track 351. The feed assembly 36 includes a feed block 361. A cutting knife 362 is arranged at the bottom of the feed block 361. The feed block 361 is arranged on a feed screw 363. The feed screw 363 passes through the protective shell 324 and is connected to the worm wheel 341. Since the three feed assemblies 36 are driven by the same synchronous feed drive motor 313, the feed assemblies 36 can be fed and retracted synchronously, thereby ensuring the processing quality and improving the processing efficiency.

[0046] In order to adapt to the shape of the pipeline, the knife seat 35 is provided with an elastic fitting mechanism 37 to achieve groove processing of pipelines with different roundness. The elastic fitting mechanism 37 includes a support roller 371 fixed on the feed block 361, an adjustment spring 372 is sleeved on the guide column 323, one end of the adjustment spring 372 is connected to a slide plate 373, the slide plate 373 is sleeved on the guide column 323, and a linear mounting hole 325 is opened on the mounting plate 321. The mounting hole 325 is connected to a limit baffle 374 by bolts. The position of the limit baffle 374 can be adjusted according to the actual pipeline size. The slide plate 373 contacts the limit baffle 374, and the other end of the adjustment spring 372 contacts the knife seat 35. The support roller 371 fits the inner wall of the pipeline, so that the tool always fits the processing position, which is suitable for groove processing of pipelines with different roundness.

[0047] Example 2

[0048] like Figure 7-Figure 9 As shown, the difference between this embodiment and embodiment 1 is that an axial limiting device is further provided, and the axial limiting device includes an axial adjusting mechanism 4 and a radial adjusting mechanism 5 .

[0049] The axial adjustment mechanism 4 includes an axial drive motor 41 arranged at the bottom of the protective box 311. The axial drive motor 41 is meshed with an axially movable rack 42 through a gear. The axially movable rack 42 is slidably arranged on the inner side of the protective side plate 314. Two guide connecting plates 43 are slidably connected to the inner side of the protective side plate 314. One end of the guide connecting plate 43 and the axially movable rack 42 are both connected to the radial adjustment mechanism 5. When the axially movable rack 42 moves telescopically, the guide connecting plate 43 and the radial adjustment mechanism 5 are also driven to move axially.

[0050] The radial adjustment mechanism 5 includes a mounting ring 51, an annular receiving groove is arranged on the inner side of the mounting ring 51, a driving ring 52 is arranged in the annular receiving groove, a limiting convex ring is arranged on the lower side of the driving ring 52, and the limiting convex ring is arranged in the limiting groove in the annular receiving groove, and an inner gear ring 53 and an outer gear ring 54 are respectively arranged on the inner and outer sides of the driving ring 52, and the outer gear ring 54 is connected to the radial adjustment driving motor 55 through gears, and the radial adjustment driving motor 55 is installed on the limiting ring, and a plurality of linkage gears 56 meshing with the inner gear ring 53 are distributed circumferentially on the limiting ring, and the linkage gears 56 are meshed with a limiting rack 57 slidably arranged on the limiting ring, and the guide connecting plate 43 and one end of the axially movable rack 42 are both arranged in the guide ring groove of the limiting ring.

[0051] When hoisting the rotary pipe bevel cutting machine, the axial drive motor 41 is started to adjust the axial position of the radial adjustment mechanism 5, and the radial adjustment drive motor 55 of the radial adjustment mechanism 5 is started according to the pipe size, so that the drive ring 52 rotates to drive the linkage gear 56 to rotate, and the linkage gear 56 drives the corresponding limit rack 57 to extend outward synchronously until the outermost end of the limit rack 57 exceeds the pipe, and the rotary pipe bevel cutting machine is pushed onto the pipe until it hits the limit rack 57, and then the synchronous clamping device 2 is started to clamp the pipe, and the radial adjustment drive motor 55 is started to rotate in the opposite direction, so that the limit rack 57 retracts. The installation position of the rotary pipe bevel cutting machine is guaranteed.

[0052] Example 3

[0053] The difference between this embodiment and embodiment 2 is that: it also includes a waste cleaning mechanism 6, the waste cleaning mechanism 6 includes an arc-shaped cleaning brush 61, the arc-shaped cleaning brush 61 is set on the top of the limiting rack 57 through an elastic telescopic rod 62, the elastic telescopic rod 62 includes a fixed rod and a telescopic rod, one end of the telescopic rod is fixed to the inside of the fixed rod by a spring, and the other end of the telescopic rod is fixed with the arc-shaped cleaning brush 61, and a cleaning gear ring 63 is set on the outside of the limiting ring, and the cleaning gear ring 63 is meshed with the cleaning drive motor 64 on the guide connecting plate 43 through a gear.

[0054] After the pipe is clamped and the limit rack 57 is in the retracted state, the axial drive motor 41 is started to extend the radial adjustment mechanism 5 to a certain distance inside the pipe. After the groove processing is completed, the cleaning drive motor 64 is started, and the axial drive motor 41 is started at the same time, so that the arc-shaped cleaning brush 61 moves outward while rotating, and only the waste chips in the pipe are cleaned, and the inner wall of the pipe is cleaned at the same time, which is convenient for subsequent welding work.

[0055] Finally, it should be noted that the above embodiments are only used to illustrate the technical solution of the present invention rather than to limit it. Although the present invention has been described in detail with reference to the preferred embodiments, those skilled in the art should understand that they can still modify or replace the technical solution of the present invention with equivalents, and these modifications or equivalent replacements cannot cause the modified technical solution to deviate from the spirit and scope of the technical solution of the present invention.

Claims

1. A rotary pipe beveling cutting machine, comprising a power device, characterized in that: It includes a slewing support device, a synchronous clamping device and a synchronous feed cutting device, and the synchronous clamping device and the synchronous feed cutting device are both arranged on the slewing support device; the synchronous cutting device includes a synchronous drive box connected to the power device, and the side of the synchronous drive box is provided with at least two connecting guide rail mechanisms arranged on the slewing support device, and the output end of the synchronous drive box is connected to a rotating transmission mechanism through a universal joint, and the rotating transmission mechanism is connected to the feed assembly on the knife seat, and the knife seat is arranged on the connecting guide rail mechanism, and the knife seat is provided with an elastic fitting mechanism; The slewing support device includes a fixed support ring and a rotating gear ring, the fixed support ring and the rotating gear ring are rotatably connected through a bearing, and a plurality of arc-shaped support pressing blocks are arranged between the fixed support ring and the rotating gear ring, and an anti-wear layer is arranged at the contact end between the arc-shaped support pressing block and the rotating gear, a rotating drive motor is arranged on the fixed support ring, and the rotating drive motor is meshed with the rotating gear ring through a gear, and at least one pipeline positioning plate and a lifting ring are arranged on the fixed support ring, and the lifting ring is used to connect the lifting equipment, and a plurality of positioning through holes are opened on the pipeline positioning plate for fixing the hydraulic pipeline of the power device; The rotary drive motor is connected to the power device; The connecting rail mechanism includes a mounting plate, one end of which is connected to the protective side plate, and the other end of which is fixed to the rotating gear ring through a base plate, and at least one guide column is arranged on the inner side of the mounting plate; a protective shell is arranged on the upper side of the mounting plate, and a universal joint is arranged in the protective shell; The rotation transmission mechanism includes a worm wheel and a worm that mesh with each other. The worm wheel and the worm are both arranged in a protective shell. One end of the worm is connected to the other end of the universal joint. The other end of the worm is installed on the protective shell through a bearing. The worm is meshed with the worm wheel. The knife seat is slidably arranged on the guide column, a feed track is arranged on the side of the knife seat, a feed assembly is slidably arranged on the feed track, the feed assembly includes a feed block, a cutting knife is arranged at the bottom of the feed block, the feed block is arranged on the feed screw rod, and the feed screw rod passes through the protective shell and is connected to the worm gear; The elastic fitting mechanism includes a supporting roller fixed on the feed block, an adjusting spring is sleeved on the guide column, one end of the adjusting spring is connected to a slide plate, the slide plate is sleeved on the guide column, a mounting hole of a linear part is opened on the mounting plate, the mounting hole is connected to a limit baffle by a bolt, the slide plate is in contact with the limit baffle, and the other end of the adjusting spring is in contact with the knife seat.

2. A rotary pipe beveling cutting machine according to claim 1, characterized in that: The synchronous clamping device comprises a synchronous driving ring arranged in a fixed support ring, a plane spiral protrusion is arranged on the synchronous driving ring, a clamping gear ring is arranged on the outer side of the synchronous driving ring, a clamping driving motor is arranged on the fixed support ring, the clamping driving motor is meshed with the clamping gear ring through a gear, a plurality of circumferentially distributed radial sliding grooves are opened on one side of the fixed support ring, a clamping seat is arranged in the radial sliding groove, an arc groove meshed with the plane spiral protrusion is arranged at the bottom of the clamping seat, and a clamping claw for clamping the pipe is arranged at the outer end of the clamping seat; The clamping drive motor is connected to the power device.

3. The rotary pipe bevel cutting machine according to claim 2, characterized in that: The synchronous drive box includes a protective box body, a rotary joint is arranged on the top of the protective box body, the rotary joint is connected to the power device, a synchronous feed drive motor is arranged in the middle of the bottom of the protective box body, the synchronous feed drive motor is connected to the rotary joint, and a protective side plate is also arranged at the bottom of the protective box body; The output end of the synchronous feed drive motor is provided with a driving bevel gear, which meshes with at least two driven bevel gears. The driven bevel gear is installed in the protective box through a bearing seat, and the rotating shaft of the driven bevel gear is connected to one end of the universal joint through a coupling.

4. The rotary pipe bevel cutting machine according to claim 3, characterized in that: It also includes an axial limiting device, which includes an axial adjustment mechanism and a radial adjustment mechanism; The axial adjustment mechanism includes an axial drive motor arranged at the bottom of the protection box body, the axial drive motor is meshed with an axial movable rack through a gear, the axial movable rack is slidably arranged on the inner side of the protection side plate, and at least one guide connecting plate is slidably connected to the inner side of the protection side plate; The radial adjustment mechanism comprises a mounting ring, an annular receiving groove is arranged on the inner side of the mounting ring, a driving ring is arranged in the annular receiving groove, a limiting convex ring is arranged on the lower side of the driving ring, the limiting convex ring is arranged in the limiting groove in the annular receiving groove, an inner gear ring and an outer gear ring are arranged on the inner side and the outer side of the driving ring respectively, the outer gear ring is connected to the radial adjustment driving motor through a gear, the radial adjustment driving motor is installed on the limiting ring, a plurality of linkage gears meshing with the inner gear ring are distributed on the circumference of the limiting ring, and the linkage gears mesh with the limiting rack slidably arranged on the limiting ring; The guide connecting plate and one end of the axially movable rack are both arranged in the guide ring groove of the limiting ring.

5. The rotary pipe bevel cutting machine according to claim 4, characterized in that: It also includes a waste cleaning mechanism, which includes an arc-shaped cleaning brush, which is arranged on the top of the limiting rack through an elastic telescopic rod, the elastic telescopic rod includes a fixed rod and a telescopic rod, one end of the telescopic rod is fixed to the inside of the fixed rod by a spring, and the other end of the telescopic rod is fixed with an arc-shaped cleaning brush, and a cleaning gear ring is arranged on the outside of the limiting ring, and the cleaning gear ring is meshed with a cleaning drive motor on the guide connecting plate through a gear.

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