MPP electric power pipe cutting device

Abstract

The invention discloses an MPP electric power pipe cutting device, and belongs to the field of electric power pipe construction, the MPP electric power pipe cutting device comprises a clamping mechanism and a cutting mechanism, the clamping mechanism comprises a shell, one side of the shell is provided with a plurality of guide grooves, and the other side of the shell is provided with an end cover; a driving disc is rotationally connected to the inner ring plate, and one end of each clamping jaw is connected with the corresponding spiral guide strip; a second gear is further rotationally connected to the inner ring plate, a first motor is arranged on one side of the shell, and a driving gear meshed with the second gear is connected to an output shaft of the first motor; the cutting mechanism comprises a driving box, the output shaft end of the second motor is connected with a driving bevel gear, a rotating shaft is provided with a driven bevel gear meshed with the driving bevel gear, and one end of the rotating shaft extends out of the driving box and is connected with a cutting blade. When the electric power pipe is cut, the clamping mechanism is used for clamping the electric power pipe, the cutting mechanism conducts ring cutting operation on the electric power pipe, the stability and efficiency of the cutting operation of the electric power pipe are improved, and the cutting quality of the electric power pipe is guaranteed.

Description

Technical Field

[0001] The invention belongs to the field of power pipe construction, and in particular relates to an MPP power pipe cutting device. Background Art

[0002] In the process of power infrastructure construction and maintenance, MPP (modified polypropylene) power pipes, as a high-performance, corrosion-resistant, and excellent insulating pipe material, are widely used in cable protection, urban power grid transformation, and power line laying. The laying of power pipes often requires precise cutting of pipes based on the actual construction environment and design requirements to ensure the continuity and functionality of the pipeline system.

[0003] Traditionally, for the cutting of MPP power pipes, two main cutting tools are used, depending on the diameter of the pipe: hand saws and cutting machines. For power pipes with smaller diameters, construction workers often choose to use hand saws for manual cutting due to their light weight and ease of operation. Although hand saw cutting is easy to operate and low in cost, for large-sized power pipes, its cutting efficiency is low, the labor intensity is high, and it is difficult to ensure the flatness and accuracy of the cut surface. Especially during long-term operations, operators are prone to fatigue, which further increases the difficulty and time cost of the operation.

[0004] For MPP power pipes with larger diameters, in order to improve cutting efficiency and cutting quality, the industry generally uses electric cutting machines for mechanized operations. With its efficient and precise cutting capabilities, electric cutting machines greatly shorten cutting time and reduce the burden of manpower. However, in actual operations, although handheld cutting machines are highly flexible, their stability is difficult to be fully guaranteed due to the operating skills and physical condition of the operators. Especially when continuously cutting long-distance or large-size power pipes, even a slight hand shake may cause the cutting line to deviate, resulting in uneven cuts, many burrs and other problems. This not only affects the appearance quality of the power pipe, but more importantly, the uneven cuts may lead to loose connections and increased leakage risks during the subsequent pipe docking, sealing and installation processes, and in severe cases even threaten the safe operation of the entire power line. Summary of the invention

[0005] The purpose of the present invention is to overcome the deficiencies in the prior art and provide an MPP power pipe cutting device to solve the problems of low efficiency in manual cutting of power pipes and insufficient stability of handheld cutting machines in the prior art, thereby improving the overall quality and efficiency of power pipe cutting operations.

[0006] An MPP power pipe cutting device comprises a clamping mechanism and a cutting mechanism, wherein the clamping mechanism comprises a shell, a first leg is arranged at the lower part of the shell to support the cutting device, an inner ring plate is coaxially arranged inside the shell, a plurality of guide grooves are arranged on one side of the shell, claws are slidably connected in the guide grooves, and an end cover is arranged on the other side of the shell; a driving disk is rotatably connected to the inner ring plate, a spiral guide bar is arranged on one side of the driving disk, one end of the claw is connected to the spiral guide bar, and when the driving disk rotates, the spiral guide bar on the side thereof drives a plurality of claws to approach or disperse simultaneously; the inner ring plate is also rotatably connected to There is a second gear, a first motor is provided on one side of the shell, a driving gear meshing with the second gear is connected to the output shaft of the first motor, a mounting seat is provided on one side of the second gear, the cutting mechanism is installed on the mounting seat, the cutting mechanism includes a driving box, a partition is provided in the driving box, the second motor is installed on the partition, the output shaft end of the second motor is connected to the driving bevel gear, the lower part of the driving box is rotatably connected with a rotating shaft, the rotating shaft is provided with a driven bevel gear meshing with the driving bevel gear, and one end of the rotating shaft extends to the outside of the driving box and is connected to a cutting blade.

[0007] Furthermore, a first gear is fixedly connected to one side of the driving disk, one end of the output shaft of the first motor is connected to a spline shaft, the driving gear is slidably mounted on the spline shaft, a shift fork is rotatably connected to the upper portion of the driving gear, a slide groove is provided on the upper portion of the shell, and the upper portion of the shift fork is slidably arranged inside the slide groove.

[0008] Furthermore, an end plate is provided at each end of the spline shaft, which limits the sliding range of the driving gear on the spline shaft and prevents the driving gear from detaching from the spline shaft during movement; a limit baffle is provided at each end of the slide groove, and when the driving gear moves to engage with the first gear or the second gear, one side of the driving gear is fitted with the corresponding end plate, and the shift fork is fitted with the corresponding limit baffle; a first magnet is provided on each side of the shift fork, and a second magnet is provided on one side of the limit baffle.

[0009] Furthermore, a supporting mechanism is provided on the mounting seat, and the supporting mechanism includes a column, an upper end of the column is pivotally connected to a support arm, and the lower end of the support arm is connected to the side wall of the column by a telescopic device, and the telescopic device is a hydraulic cylinder, an air cylinder or an electric push rod; the cutting mechanism is installed at the front end of the support arm, and a first connecting plate is provided on the upper part of the drive box, a second connecting plate is provided on one side of the first connecting plate, and the second connecting plate is installed at the lower part of the support arm, and the first connecting plate and the second connecting plate are connected by bolts.

[0010] Furthermore, an annular guide rail is provided on one side of the end cover, and the annular guide rail is coaxially arranged with the second gear. A sliding block is fixedly connected to one side of the column, and the sliding block is slidably mounted on the annular guide rail.

[0011] Furthermore, the front end of the support arm is slidably connected to a telescopic arm, the front end of the telescopic arm is rotatably connected to a screw, one end of the screw is provided with a hand wheel, the other end of the screw is threadedly connected to the support arm, and the second connecting plate is installed at the lower part of the telescopic arm.

[0012] Furthermore, a plurality of latching teeth are evenly arranged on the butt joint surfaces of the first connection disk and the second connection disk, and after the first connection disk and the second connection disk are butt jointed, the latching teeth thereof are engaged with each other.

[0013] Furthermore, one side of each of the first connecting plate and the second connecting plate is provided with a groove, a spring is provided in the groove, and the spring is sleeved on the outside of the bolt.

[0014] Furthermore, a moving wheel is provided at the lower part of the first leg, and a handle is provided at each side of the shell.

[0015] Furthermore, it also includes a bracket, which is supported on one end of the power pipe to be cut. The bracket includes a U-shaped seat, and a plurality of arc-shaped support plates are provided on the upper part of the U-shaped seat. The power pipe is placed on the arc-shaped support plates. A plurality of U-shaped bolts are provided on the upper part of the U-shaped seat, and the plurality of U-shaped bolts fix the power pipe on the arc-shaped support plates; a plurality of second legs are provided on both sides of the U-shaped seat, and the second legs are spirally connected to the side walls of the U-shaped seat.

[0016] The beneficial effects of the present invention are:

[0017] 1) When cutting the electric power pipe, the present invention uses a clamping mechanism to clamp the electric power pipe, and the cutting mechanism performs a ring cutting operation on the electric power pipe, thereby improving the stability and efficiency of the electric power pipe cutting operation and ensuring the quality of the electric power pipe cutting.

[0018] 2) The sliding of the shift fork on the spline shaft realizes the rapid switching between the driving gear and the first gear and the second gear, thereby realizing the separate driving of the clamping mechanism and the cutting mechanism without the use of an additional motor, thereby reducing costs and improving efficiency.

[0019] 3) End plates for limiting the sliding range of the driving gear are set at both ends of the spline shaft, and limit baffles are set at both ends of the slide groove, and a first magnet is set on both sides of the shift fork, and a second magnet is set on the opposite surface of the limit baffle and the shift fork. When the shift fork approaches the limit baffle, the first magnet and the second magnet attract each other, thereby preventing the shift fork from sliding in the slide groove when the clamping mechanism or the cutting mechanism is operating, thereby ensuring the safety and reliability of the clamping mechanism and the cutting mechanism during operation.

[0020] 4) A bendable and retractable support mechanism is provided on the mounting seat, which not only realizes the adjustment of the position of the cutting device and reduces the installation accuracy requirements of the clamping mechanism on the power pipe, but also realizes the adjustment of the cutting depth of the power pipe by the cutting blade, which is suitable for cutting power pipes of different thicknesses; in addition, by arranging the first connecting plate and the second connecting plate on the upper part of the driving box of the cutting mechanism, the inclination angle of the cutting blade is adjusted, and the function of synchronously beveling the cut end face when cutting the power pipe is realized, which simplifies the subsequent welding process of the power pipe and improves the practicability of the device.

[0021] 5) An annular guide rail is provided on one side of the end cover, and a slider slidably connected to the annular guide rail is provided on one side of the column, which enhances the rigidity of the column and the stability of the support for the cutting mechanism, avoids shaking of the cutting mechanism during operation, and ensures the quality of the power pipe cutting.

[0022] 6) A number of latching teeth are evenly arranged on the mating surfaces of the first connection disk and the second connection disk. After the first connection disk and the second connection disk are docked, the latching teeth of the first connection disk and the latching teeth of the second connection disk engage with each other, thereby avoiding relative rotation of the first connection disk and the second connection disk when the cutting device is operating, thereby ensuring the quality of the power pipe cutting.

[0023] 7) By setting a bracket at one end of the power pipe to be cut, one end of the power pipe is supported, thereby preventing the gap on the cut end surface from becoming larger due to its own weight during the cutting process, and ensuring the flatness of the cut end surface. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] Figure 1 This is a usage status diagram of an MPP power pipe cutting device of the present invention.

[0025] Figure 2 It is a schematic diagram of the assembly of the clamping mechanism and the cutting mechanism.

[0026] Figure 3 This is an exploded view of the shell and end cover.

[0027] Figure 4 yes Figure 3 Enlarged view of point A in the middle.

[0028] Figure 5 It is a schematic diagram of the positions of the first gear and the second gear.

[0029] Figure 6 It is a schematic diagram of the connection between the drive disc and the claw.

[0030] Figure 7 This is an exploded diagram of the driving gear and the shift fork.

[0031] Figure 8 It is a schematic diagram of the supporting mechanism.

[0032] Fig. 9 It is a schematic diagram of the interior of the cutting mechanism.

[0033] Fig.10 It is a schematic diagram of the bracket structure.

[0034] In the figure, 1, clamping mechanism; 11, housing; 111, guide groove; 112, handle; 113, inner ring plate; 114, slide groove; 115, limit baffle; 116, second magnet; 117, first leg; 118, moving wheel; 12, end cover; 121, annular guide rail; 13, driving disk; 131, spiral guide bar; 132, first gear; 14, claw; 15, driving gear; 151, spline shaft; 152, end plate; 16, fork; 161, first magnet; 17, first motor; 18, second gear; 181, mounting seat; 2, cutting mechanism ; 21. Drive box; 211. Partition; 212. First connecting plate; 22. Second motor; 23. Active bevel gear; 24. Driven bevel gear; 25. Rotating shaft; 26. Cutting blade; 3. Support mechanism; 31. Column; 32. Slider; 33. Support arm; 34. Telescopic device; 35. Telescopic arm; 36. Screw; 361. Hand wheel; 37. Second connecting plate; 371. Gear; 372. Groove; 38. Spring; 39. Bolt; 4. Bracket; 41. U-shaped seat; 42. Arc support plate; 43. U-shaped bolt; 44. Second leg; 5. Power pipe. DETAILED DESCRIPTION

[0035] The following will be combined with the attached Figure 1-Figure 10 , the technical solutions in the embodiments of the present invention are clearly and completely described. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of them. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0036] In the description of the present invention, it should be understood that the terms "longitudinal", "lateral", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside" and "outside" etc., indicating orientations or positional relationships, are based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention, 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 should not be understood as a limitation on the present invention.

[0037] like Figure 1 As shown, an MPP power pipe cutting device includes a clamping mechanism 1 and a cutting mechanism 2. Figure 2 , Figure 3As shown, the clamping mechanism 1 includes a housing 11, a first leg 117 is provided at the lower part of the housing 11 to support the cutting device, an inner ring plate 113 is coaxially arranged inside the housing 11, a plurality of guide grooves 111 are provided on one side of the housing 11, claws 14 are slidably connected in the guide grooves 111, and an end cover 12 is provided on the other side of the housing 11; a driving disk 13 is rotatably connected to the inner ring plate 113, as shown in FIG. Figure 6 As shown, a spiral guide bar 131 is provided on one side of the driving disk 13, and one end of the claw 14 is connected to the spiral guide bar 131. When the driving disk 13 rotates, the spiral guide bar 131 on its side drives multiple claws 14 to move in or out at the same time, thereby clamping or loosening the power tube 5. After the claw 14 clamps the power tube, it prevents the cutting device from sliding on the power tube during operation, thereby ensuring the stability of the cutting device during use; Figure 5 As shown, the inner ring plate 113 is also rotatably connected to a second gear 18, a first motor 17 is provided on one side of the housing 11, a driving gear 15 meshing with the second gear 18 is connected to the output shaft of the first motor 17, a mounting seat 181 is provided on one side of the second gear 18, and the cutting mechanism 2 is mounted on the mounting seat 181, as shown in FIG. Fig. 9 As shown, the cutting mechanism 2 includes a driving box 21, a partition 211 is provided in the driving box 21, a second motor 22 is installed on the partition 211, an output shaft end of the second motor 22 is connected to a driving bevel gear 23, a rotating shaft 25 is rotatably connected to the lower part of the driving box 21, a driven bevel gear 24 meshing with the driving bevel gear 23 is provided on the rotating shaft 25, and one end of the rotating shaft 25 extends to the outside of the driving box 21 and is connected to a cutting blade 26.

[0038] When cutting the power pipe, the cutting device is inserted into the power pipe from one end thereof, and the position of the cutting device is adjusted according to the cutting position, and then the cutting device is fixed on the power pipe by using the clamping mechanism 1, thereby ensuring the stability of the cutting device during operation; then the first motor 17 and the second motor 22 are turned on, and when the second motor 22 rotates, it drives the cutting blade 26 to rotate to cut the power pipe, and when the first motor 17 rotates, it drives the driving gear 15 to rotate, and the driving gear 15 drives the second gear 18 to rotate, thereby driving the cutting device to rotate around the power pipe, and performs circular cutting on the power pipe 5, thereby improving the quality and efficiency of the power pipe cutting operation.

[0039] like Figure 5 As shown, a first gear 132 is fixedly connected to one side of the driving disk 13, a spline shaft 151 is connected to one end of the output shaft of the first motor 17, the driving gear 15 is slidably mounted on the spline shaft 151, a shift fork 16 is rotatably connected to the upper portion of the driving gear 15, a slide groove 114 is provided on the upper portion of the housing 11, and the upper portion of the shift fork 16 is slidably disposed inside the slide groove 114.

[0040] When the clamping mechanism 1 clamps the electric pipe, the fork 16 is pushed toward one side of the first gear 132 to separate the driving gear 15 from the second gear 18 and mesh with the first gear 132. The driving gear 15 drives the first gear 132 to rotate, thereby driving the driving disk 13 to rotate, thereby realizing the rapid clamping and loosening of the clamping mechanism 1 and the electric pipe; when the electric pipe is clamped and the ring cutting operation is performed, the fork 16 is pushed toward one side of the second gear 18 to separate the driving gear 15 from the first gear 132 and mesh with the second gear 18, thereby driving the mounting seat 181 and the cutting mechanism 2 thereon to rotate around the electric pipe; this scheme utilizes the sliding of the fork 16 on the spline shaft 151 to realize the rapid switching between the driving gear 15 and the first gear 132 and the second gear 18, thereby realizing the separate driving of the clamping mechanism 1 and the cutting mechanism 2, without the need to use an additional motor, thereby reducing costs and improving efficiency.

[0041] like Figure 7 As shown, an end plate 152 is provided at each end of the spline shaft 151, which limits the sliding range of the driving gear 15 on the spline shaft 151 and prevents the driving gear 15 from being separated from the spline shaft 151 during the movement; Figure 4 As shown, a limit baffle 115 is provided at each end of the slide slot 114, and when the driving gear 15 moves to engage with the first gear 132 or the second gear 18, one side of the driving gear 15 fits with the corresponding end plate 152, and the shift fork 16 fits with the corresponding limit baffle 115, thereby ensuring the accuracy of the switching between the clamping mechanism 1 and the cutting mechanism 2; Figure 7 As shown, a first magnet 161 is provided on each side of the fork 16, and a second magnet 116 is provided on one side of the limit baffle 115. When the fork 16 is close to the limit baffle 115, the first magnet 161 and the second magnet 116 attract each other, thereby preventing the fork 16 from sliding in the slide groove 114 when the clamping mechanism 1 or the cutting mechanism 2 is operating, thereby ensuring the safety and reliability of the clamping mechanism 1 and the cutting mechanism 2 during operation.

[0042] like Figure 8 As shown, a supporting mechanism 3 is provided on the mounting seat 181, and the supporting mechanism 3 includes a column 31, and a support arm 33 is pivotally connected to the upper end of the column 31, and the lower end of the support arm 33 is connected to the side wall of the column 31 through a telescopic device 34, and the telescopic device 34 is a hydraulic cylinder, a pneumatic cylinder or an electric push rod; the cutting mechanism 2 is installed at the front end of the support arm 33, and a first connecting plate 212 is provided on the upper part of the driving box 21, and a second connecting plate 37 is provided on one side of the first connecting plate 212, and the second connecting plate 37 is installed at the lower part of the support arm 33, and the first connecting plate 212 and the second connecting plate 37 are connected by bolts 39.

[0043] When the telescopic device 34 is telescoped, it drives the support arm 33 and the cutting mechanism 2 at its end to rotate, which not only realizes the adjustment of the position of the cutting device and reduces the installation accuracy requirements of the clamping mechanism 1 on the power pipe, but also realizes the adjustment of the cutting depth of the power pipe by the cutting blade 26, which is suitable for cutting operations of power pipes of different thicknesses; in addition, by arranging the first connecting plate 212 and the second connecting plate 37 on the upper part of the driving box 21 of the cutting mechanism 2, the inclination angle of the cutting blade 26 is also adjusted, and the function of synchronously opening the groove on the cut end face when cutting the power pipe is realized, which simplifies the subsequent welding process of the power pipe and improves the practicability of the device.

[0044] like Figure 3 , Figure 8 As shown, an annular guide rail 121 is provided on one side of the end cover 12, and the annular guide rail 121 is coaxially arranged with the second gear 18. A slider 32 is fixedly connected to one side of the column 31, and the slider 32 is slidably installed on the annular guide rail 121; the annular guide rail 121 and the slider 32 enhance the rigidity of the column 31 and the stability of the support for the cutting mechanism 2, thereby avoiding shaking of the cutting mechanism 2 during operation and ensuring the quality of the power pipe cutting.

[0045] like Figure 8 As shown, the front end of the support arm 33 is slidably connected to the telescopic arm 35, and the front end of the telescopic arm 35 is rotatably connected to the screw rod 36. One end of the screw rod 36 is provided with a hand wheel 361, and the other end of the screw rod 36 is threadedly connected to the support arm 33. The second connecting plate 37 is installed at the lower part of the telescopic arm 35; the telescopic arm 35 further extends the length of the support arm 33, thereby widening the range of position adjustment of the cutting mechanism 2.

[0046] like Fig. 9 As shown, a plurality of latch teeth 371 are evenly arranged on the docking surfaces of the first connection disk 212 and the second connection disk 37. After the first connection disk 212 and the second connection disk 37 are docked, the latch teeth 371 engage with each other, thereby preventing the first connection disk 212 and the second connection disk 37 from rotating relative to each other when the cutting device is operating, thereby ensuring the quality of the power pipe cutting.

[0047] like Fig. 9 As shown, a groove 372 is provided on one side of the first connecting plate 212 and the second connecting plate 37, and a spring 38 is provided in the groove 372, and the spring 38 is sleeved on the outside of the bolt 39; the spring 38 facilitates the first connecting plate 212 and the second connecting plate 37 to automatically pop open after the bolt 39 is loosened, thereby reducing the difficulty of adjusting the angle of the cutting mechanism 2.

[0048] like Figure 2 As shown, a moving wheel 118 is disposed at the lower portion of the first leg 117 , and a handle 112 is disposed on each side of the housing 11 , so as to facilitate moving the cutting device to adjust the approximate position of the cutting mechanism 2 .

[0049] like Fig.10 As shown, it also includes a bracket 4, which is supported on one end of the power pipe to be cut. The bracket 4 includes a U-shaped seat 41, and a plurality of arc-shaped support plates 42 are provided on the upper part of the U-shaped seat 41. The power pipe 5 is placed on the arc-shaped support plate 42. A plurality of U-shaped bolts 43 are provided on the upper part of the U-shaped seat 41. The plurality of U-shaped bolts 43 fix the power pipe 5 on the arc-shaped support plate 42, thereby avoiding rotation and displacement of the power pipe during ring cutting, and ensuring the safety and quality of the power pipe cutting; a plurality of second legs 44 are provided on both sides of the U-shaped seat 41, and the second legs 44 are spirally connected to the side walls of the U-shaped seat 41, so as to facilitate the adjustment of the height of the bracket 4; the bracket 4 is used to support one end of the power pipe, thereby avoiding the enlargement of the gap on the cut end face due to its own weight during the cutting process, and ensuring the flatness of the cut end face.

[0050] The above contents are merely examples and explanations of the structure of the present invention. Those skilled in the art may make various modifications or additions to the specific embodiments described or replace them in a similar manner. As long as they do not deviate from the scope defined by the structure of the invention, they shall all fall within the protection scope of the present invention.

Claims

1. An MPP power pipe cutting device, comprising a clamping mechanism (1) and a cutting mechanism (2), characterized in that: The clamping mechanism (1) comprises a shell (11), a first leg (117) is provided at the lower part of the shell (11), an inner ring plate (113) is coaxially arranged inside the shell (11), a plurality of guide grooves (111) are provided on one side of the shell (11), claws (14) are slidably connected in the guide grooves (111), and an end cover (12) is provided on the other side of the shell (11); a driving disk (13) is rotatably connected to the inner ring plate (113), a spiral guide bar (131) is provided on one side of the driving disk (13), one end of the claw (14) is connected to the spiral guide bar (131), and when the driving disk (13) rotates, the spiral guide bar (131) on its side drives a plurality of claws (14) to move forward or disperse simultaneously; a second gear (18) is also rotatably connected to the inner ring plate (113), and a second gear (18) is provided on one side of the shell (11) A first motor (17) is provided, wherein the output shaft of the first motor (17) is connected to a driving gear (15) meshing with a second gear (18), a mounting seat (181) is provided on one side of the second gear (18), the cutting mechanism (2) is mounted on the mounting seat (181), the cutting mechanism (2) comprises a driving box (21), a partition (211) is provided in the driving box (21), a second motor (22) is mounted on the partition (211), an output shaft end of the second motor (22) is connected to a driving bevel gear (23), a rotating shaft (25) is rotatably connected at the lower part of the driving box (21), a driven bevel gear (24) meshing with the driving bevel gear (23) is provided on the rotating shaft (25), and one end of the rotating shaft (25) extends to the outside of the driving box (21) and is connected to a cutting blade (26).

2. The MPP power pipe cutting device according to claim 1, characterized in that: A first gear (132) is fixedly connected to one side of the driving disk (13); one end of the output shaft of the first motor (17) is connected to a spline shaft (151); the driving gear (15) is slidably mounted on the spline shaft (151); a shift fork (16) is rotatably connected to the upper portion of the driving gear (15); a slide groove (114) is provided on the upper portion of the housing (11); and the upper portion of the shift fork (16) is slidably arranged inside the slide groove (114).

3. The MPP power pipe cutting device according to claim 2, characterized in that: An end plate (152) is respectively provided at both ends of the spline shaft (151), and a limit baffle (115) is respectively provided at both ends of the slide groove (114). When the driving gear (15) moves to engage with the first gear (132) or the second gear (18), one side of the driving gear (15) is in contact with the corresponding end plate (152); the shift fork (16) is in contact with the corresponding limit baffle (115), and a first magnet (161) is respectively provided on both sides of the shift fork (16), and a second magnet (116) is provided on one side of the limit baffle (115).

4. The MPP power pipe cutting device according to claim 1, characterized in that: The mounting seat (181) is provided with a support mechanism (3), the support mechanism (3) comprising a column (31), the upper end of the column (31) is pivotally connected to a support arm (33), the lower end of the support arm (33) is connected to the side wall of the column (31) through a telescopic device (34), and the telescopic device (34) is a hydraulic cylinder, a pneumatic cylinder or an electric push rod; the cutting mechanism (2) is installed at the front end of the support arm (33), the upper part of the drive box (21) is provided with a first connecting plate (212), one side of the first connecting plate (212) is provided with a second connecting plate (37), the second connecting plate (37) is installed at the lower part of the support arm (33), and the first connecting plate (212) and the second connecting plate (37) are connected by bolts (39).

5. The MPP power pipe cutting device according to claim 4, characterized in that: An annular guide rail (121) is provided on one side of the end cover (12), and the annular guide rail (121) is coaxially arranged with the second gear (18). A slider (32) is fixedly connected to one side of the column (31), and the slider (32) is slidably mounted on the annular guide rail (121).

6. The MPP power pipe cutting device according to claim 4, characterized in that: The front end of the support arm (33) is slidably connected to a telescopic arm (35), the front end of the telescopic arm (35) is rotatably connected to a screw rod (36), one end of the screw rod (36) is provided with a hand wheel (361), the other end of the screw rod (36) is threadedly connected to the support arm (33), and the second connection plate (37) is installed at the lower part of the telescopic arm (35).

7. The MPP power pipe cutting device according to claim 4 or 6, characterized in that: A plurality of latching teeth (371) are evenly arranged on the butt joint surfaces of the first connection disk (212) and the second connection disk (37); after the first connection disk (212) and the second connection disk (37) are butt jointed, the latching teeth (371) are mutually engaged.

8. The MPP power pipe cutting device according to claim 7, characterized in that: A groove (372) is provided on one side of the first connection plate (212) and the second connection plate (37). A spring (38) is provided in the groove (372), and the spring (38) is sleeved on the outside of the bolt (39).

9. The MPP power pipe cutting device according to claim 1, characterized in that: A moving wheel (118) is provided at the lower part of the first leg (117), and a handle (112) is provided on each side of the housing (11).

10. The MPP power pipe cutting device according to claim 1, characterized in that: The invention also comprises a bracket (4), wherein the bracket (4) is supported on one end of the electric power pipe to be cut, and the bracket (4) comprises a U-shaped seat (41), wherein a plurality of arc-shaped supporting plates (42) are provided on the upper part of the U-shaped seat (41), and the electric power pipe (5) is placed on the arc-shaped supporting plates (42), and a plurality of U-shaped bolts (43) are provided on the upper part of the U-shaped seat (41), and the plurality of U-shaped bolts (43) fix the electric power pipe (5) on the arc-shaped supporting plates (42); and a plurality of second supporting legs (44) are provided on both sides of the U-shaped seat (41), and the second supporting legs (44) are spirally connected to the side walls of the U-shaped seat (41).

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