MPP power tube cutting equipment with positioning and stabilizing mechanism

Abstract

This invention discloses an MPP power pipe cutting device with a positioning and stabilizing mechanism, belonging to the field of mechanical cutting technology. The invention adds a horizontally movable positioning seat to the cutting table. After the power pipe to be cut is placed on the cutting table, the upper end face of the power pipe is positioned by a downward-pressing upper abutment. Then, an elastic support member sliding upward along the inner wall of the fixed sleeve supports and limits the lower end of the power pipe under tension, achieving dual positioning of the power pipe in both the upper and lower directions. The positioning seat can horizontally transport the positioned power pipe on the cutting table without manual pushing. Furthermore, an elastic strap that rises and falls synchronously with the annular toothed belt is added inside the cutting seat. During the annular toothed belt cutting process, the elastic strap adheres to the upper end face of the power pipe and is stretched downwards to limit the end being cut. The tension gradually increases during the cutting process, preventing unevenness of the cut surface due to decreased stability at the cut end of the power pipe.

Description

Technical Field

[0001] This invention relates to the field of mechanical cutting technology, and more specifically, to an MPP power pipe cutting device with a positioning and stabilizing mechanism. Background Technology

[0002] MPP power conduit, also known as metallized polypropylene power conduit, is a new type of high-voltage power cable protection pipe, commonly used in power and communication engineering. It is made of high-density polyethylene or polyvinyl chloride pipe with an inner MPP polypropylene metal cladding layer.

[0003] During the laying of MPP power pipes, on-site cutting is required to facilitate length adjustment. Currently, cutting during the laying stage is done manually by operators who hold the pipe in one hand and press it down with their arm. This traditional cutting method is prone to displacement and deviation during the cutting process, resulting in an uneven cross-section of the pipe. Furthermore, since the operator only presses down on one end of the pipe, the stability of the cut end decreases as the cut surface becomes larger, making it more prone to tilting. In addition, the cutting process requires manual pushing and adjusting of the pipe to adjust the cut length, increasing labor intensity.

[0004] To address this practical problem, we propose an MPP power pipe cutting device with a positioning and stabilizing mechanism. Summary of the Invention

[0005] The purpose of this invention is to solve the above-mentioned problems. Compared with the prior art, it provides an MPP power pipe cutting device with a positioning and stabilizing mechanism. This is achieved by adding a horizontally movable positioning seat to the cutting table, using a downward pressing upper abutment to position the upper end of the power pipe, and then using an elastic support member that slides upward along the inner wall of the fixed sleeve to support and limit the lower end of the power pipe under tension, thus achieving dual positioning of the power pipe in both the upper and lower directions. In addition, an elastic strap that moves synchronously with the annular toothed belt is added inside the cutting seat. During the cutting process of the annular toothed belt, the elastic strap adheres to the upper end of the power pipe and is stretched downward to limit the end being cut. During the cutting process, the limiting tension is gradually increased, which prevents the cut end of the power pipe from becoming uneven due to poor stability.

[0006] The objective of this invention can be achieved through the following technical solution: an MPP power pipe cutting device with a positioning and stabilizing mechanism, including a cutting table, the upper end of the cutting table having a support cavity for placing the power pipe and a recessed cavity located in the middle of the support cavity, the upper end of the cutting table having a positioning seat slidably mounted above the recessed cavity via a pair of linear guide rails, and a cutting seat fixedly mounted on one side of the upper end of the cutting table.

[0007] The lower end wall of the positioning seat has an arc-shaped groove with openings at both the left and right ends. A fixed sleeve extending into the recessed cavity is fixedly fitted inside the arc-shaped groove. A through-hole is opened on the upper end wall of the fixed sleeve. An elastic support member is slidably installed inside the fixed sleeve. Annular guide rails for driving the operation of the elastic support member are fixedly installed on the outer end walls on both sides of the fixed sleeve. An electric push cylinder is fixedly installed at the top of the positioning seat. The telescopic end of the electric push cylinder passes through the arc-shaped groove and is fixedly connected to an upper abutment plate initially located at the through-hole.

[0008] The cutting seat has a hollow cavity with the same opening at the bottom. Electric push cylinders are fixed on both sides of the top of the cutting seat. The telescopic end of the electric push cylinder extends into the hollow cavity and is fixed with a drive box that is slidably installed therewith. A ring-shaped sawtooth belt drives between the pair of drive boxes. The upper wall of the cutting table has docking grooves on both sides corresponding to the positions of the drive boxes. A cutting groove is opened between the pair of docking grooves, located directly below the ring-shaped sawtooth belt and connected to the support cavity. An elastic limiting component is fixed between the end walls of the pair of drive boxes on the side away from the positioning seat.

[0009] Furthermore, the elastic support member includes sliding flaps that are slidably connected to the inner walls on both sides of the fixed sleeve, and an elastic support band is fixedly connected between the upper end walls of a pair of sliding flaps that are far apart from each other.

[0010] Furthermore, both ends of the inner side wall of the fixed sleeve are provided with sliding grooves for sliding connection of the sliding flap. The inner end of the sliding groove is provided with a through groove that communicates with the annular guide rail. The sliding block on the annular guide rail passes through the through groove and is fixedly connected to the end wall of the sliding flap.

[0011] Furthermore, the elastic support belt is made of elastic rubber material, and anti-slip protrusions are distributed on the end wall of the elastic support belt. When one end of the power pipe to be cut is passed through the positioning seat and the cutting seat in sequence and placed on the support cavity, the elastic support belt is initially located below the power pipe. The upper abutment is pushed downward by the electric push cylinder until its lower end face abuts against the upper end of the power pipe. Then, a pair of annular guide rails are driven. The pair of annular guide rails move a pair of sliding flaps upward synchronously along the sliding groove of the fixed sleeve. When the pair of sliding flaps move to the top, the elastic support belt connected between the pair of sliding flaps is sleeved on the lower end of the power pipe from bottom to top. The elastic support belt is pulled from the contracted state to the stretched state. With the cooperation of the downward pressing upper abutment, the lower end of the power pipe is covered and limited by strong tension.

[0012] Furthermore, the elastic support member also includes a lower support piece fixedly connected to the middle of the bottom end of the elastic support band. A through groove through which the lower support piece is disposed is provided on the bottom end wall of the fixed sleeve. A limiting groove extending downward and matching the lower support piece is provided on the inner end wall of the recessed cavity. The lower end of the lower support piece passes through the channel and extends into the limiting groove. The addition of the lower support piece is beneficial for limiting and guiding the stretching and tensioning of the elastic support band.

[0013] Furthermore, each of the pair of drive boxes has a rotating wheel rotatably installed inside, and a gear is fixedly fitted on each of the pair of rotating wheels. The annular sawtooth belt is fitted on the pair of gears and the two are meshed together. A drive motor that drives the rotating wheel is fixedly installed at the outer end of one of the drive boxes. By utilizing the cooperation between the drive motor and the pair of rotating wheels, the annular sawtooth belt moves back and forth at high speed between the pair of rotating wheels. The annular sawtooth belt, which moves back and forth repeatedly, cuts the positioned power pipe.

[0014] Furthermore, the elastic limiting component includes a sliding block fixed to a pair of drive boxes and slidably connected to the inner wall of the hollow cavity, and an elastic strap is fixedly connected between the pair of sliding blocks.

[0015] Furthermore, the elastic strap is located below the annular toothed belt. The elastic strap is also made of elastic rubber material. When a pair of drive boxes move downwards, the elastic strap first contacts the end of the power pipe to be cut before the annular toothed belt contacts the power pipe for cutting. After the drive box continues to descend, the elastic strap adheres to the upper surface of the power pipe and is stretched downwards to limit the end to be cut when the annular toothed belt cuts the power pipe. The closer the annular toothed belt is to the cutting groove, the greater the positioning tension of the elastic strap on the upper end of the power pipe, thus the better the limiting effect, and the less likely the cut end of the power pipe will become uneven due to decreased stability during the cutting process.

[0016] Compared with the prior art, the advantages of this invention are:

[0017] (1) This solution is achieved by adding a horizontally movable positioning seat to the cutting table. The positioning seat is equipped with upper abutment plates and elastic support pieces that correspond to the upper and lower parts. During the cutting process, the upper abutment plates are used to position the upper end of the power pipe, and the elastic support pieces that slide upward along the inner wall of the fixed sleeve are used to support and limit the lower end of the power pipe under tension. This achieves dual positioning of the power pipe in the upper and lower directions, which is suitable for positioning power pipes of different diameters. The positioning seat can horizontally transport the positioned power pipe on the cutting table without manual pushing. In addition, an elastic strap that moves up and down synchronously with the annular saw blade is added to the cutting seat. During the cutting process of the annular saw blade pressing down, the elastic strap adheres to the upper end of the power pipe and is stretched and tightened downward to limit the end being cut. The closer the annular saw blade is to the cutting groove, the greater the positioning tension of the elastic strap on the upper end of the power pipe, and the better the limiting effect. It is not easy for the cut end of the power pipe to become uneven due to poor stability.

[0018] (2) The elastic support component in this scheme consists of a pair of sliding flaps and an elastic support strip connected between them. The elastic support strip is located below the power pipe in the initial state and does not affect the initial placement of the power pipe. After the power pipe is positioned by the upper abutment, a pair of annular guide rails are driven to cause the pair of sliding flaps to move upward synchronously along the sliding groove. At this time, the elastic support strip is sleeved on the lower end of the power pipe from bottom to top. The elastic support strip reaches a large deformation state. With the cooperation of the lower abutment, the lower end of the power pipe is covered and limited by the strong tension, thereby realizing the positioning of the upper and lower ends of the power pipe respectively. Compared with the two-point clamping, the positioning method of strip tension covering expands the positioning area and improves the positioning effect. When the radius of the power pipe is larger, the elastic support strip is stretched and the deformation is greater, resulting in greater tension and better support and covering effect for the power pipe, making it less likely for the power pipe to slip off. Attached Figure Description

[0019] Figure 1 This is a schematic diagram of the structure of the present invention;

[0020] Figure 2 This is a schematic diagram of the structure of the cutting table in this invention;

[0021] Figure 3 This is a schematic diagram of the end structure at the junction of the cutting table and the positioning seat in this invention;

[0022] Figure 4 This is a schematic diagram of the structure at the junction of the fixing sleeve and the elastic support member of the present invention;

[0023] Figure 5 This is a schematic diagram of the end structure of the power pipe after it is clamped from top to bottom by the upper abutment and the elastic support strip according to the present invention.

[0024] Figure 6This is a cross-sectional view of the power pipe after the upper abutment and elastic support strip clamp it from the top and bottom according to the present invention.

[0025] Figure 7 This is a cross-sectional view of the end of the cutting seat and the cutting table before cutting, according to the present invention;

[0026] Figure 8 This is a schematic diagram of the structure at the junction of the annular sawtooth belt and a pair of drive boxes according to the present invention;

[0027] Figure 9 This is a cross-sectional view of the end of the joint between the cutting seat and the cutting table during the cutting process of the present invention;

[0028] Figure 10 This is a schematic diagram illustrating the state of the power pipe being horizontally transported using a positioning seat according to the present invention.

[0029] Explanation of the labels in the diagram:

[0030] 1. Cutting table; 101. Support cavity; 102. Recessed cavity; 103. Limiting groove; 104. Cutting groove; 105. Docking groove; 2. Positioning seat; 3. Cutting seat; 301. Hollow cavity; 4. Linear guide rail; 5. Fixing sleeve; 6. Electric push cylinder one; 7. Upper abutment plate; 8. Circular guide rail; 9. Sliding flap; 10. Elastic support belt; 11. Lower support plate; 12. Drive box; 13. Electric push cylinder two; 14. Rotating wheel; 15. Circular toothed belt; 16. Drive motor; 17. Sliding block; 18. Elastic strap. Detailed Implementation

[0031] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. All other embodiments obtained by those skilled in the art based on the embodiments of the present invention without creative effort are within the scope of protection of the present invention. Example 1:

[0032] This invention discloses an MPP power pipe cutting device with a positioning and stabilizing mechanism. Please refer to [link / reference]. Figure 1 , Figure 2 The device includes a cutting table 1, with a support cavity 101 for placing power pipes at the upper end of the cutting table 1. The support cavity 101 has an arc-shaped structure. A recessed cavity 102, which is connected to the support cavity 101 and is recessed, is opened in the middle of the upper end of the cutting table 1. The recessed cavity 102 is located in the middle of the support cavity 101. A positioning seat 2 located above the recessed cavity 102 is slidably installed on the upper end of the cutting table 1 via a pair of linear guide rails 4. The pair of linear guide rails 4 are symmetrically positioned above the outer end wall of the recessed cavity 102. A cutting seat 3 located at the end of the recessed cavity 102 and matching the positioning seat 2 is fixedly connected to the upper end of the cutting table 1.

[0033] Please see Figures 3-4 The lower end wall of the positioning seat 2 has an arc-shaped groove with openings at both ends and connected to the recessed cavity 102. A fixed sleeve 5 extending into the recessed cavity 102 is fixedly sleeved in the arc-shaped groove. A through opening is opened on the upper end wall of the fixed sleeve 5. An elastic support is slidably installed inside the fixed sleeve 5. Annular guide rails 8 for driving the operation of the elastic support are fixedly installed on the outer end walls on both sides of the fixed sleeve 5. An electric push cylinder 6 is fixedly installed at the top of the positioning seat 2. The telescopic end of the electric push cylinder 6 passes through the arc-shaped groove and is fixedly connected to an upper abutment 7 initially located at the through opening of the fixed sleeve 5, which does not affect the placement of the power pipe.

[0034] Please see Figures 3-6 The elastic support component includes sliding flaps 9 that are slidably connected to the inner walls of both sides of the fixed sleeve 5. An elastic support band 10 is fixedly connected between the upper end walls of a pair of sliding flaps 9 that are far apart from each other. The inner end walls of the fixed sleeve 5 are provided with sliding grooves for sliding connection of the sliding flaps 9. The inner end of the sliding groove is provided with a through groove that communicates with the annular guide rail 8. The sliding block on the annular guide rail 8 passes through the through groove and is fixedly connected to the end wall of the sliding flap 9. After the upper end face of the power pipe is positioned by the downward pressing upper abutment 7, the pair of annular guide rails 8 are driven. The pair of annular guide rails 8 move the pair of sliding flaps 9 upward synchronously along the sliding groove of the fixed sleeve 5. At this time, the elastic support band 10 is sleeved on the lower end of the power pipe from bottom to top. The elastic support band 10 is pulled from the contracted state to the stretched state, which is suitable for positioning power pipes of different diameters. Since the positioning seat 2 can move horizontally along a pair of linear guide rails 4, it is convenient to push the positioned power pipe toward the cutting seat 3.

[0035] Please see Figures 7-9 The cutting base 3 has a hollow cavity 301 with an opening at the lower end. Drive boxes 12 are slidably connected to both sides of the top of the hollow cavity 301. Electric push cylinders 13, which drive the lifting and lowering of the drive boxes 12, are fixedly connected to both sides of the top of the cutting base 3. A ring-shaped sawtooth belt 15 drives between the pair of drive boxes 12. The upper wall of the cutting table 1 has docking grooves 105 on both sides corresponding to the positions of the drive boxes 12. A cutting groove 104, located directly below the ring-shaped sawtooth belt 15 and connected to the supporting cavity 101, is also formed between the pair of docking grooves 105. Rotating wheels 14 are rotatably installed inside each drive box 12. Gears are fixedly fitted on each pair of rotating wheels 14. An annular sawtooth belt 15 is fitted on the pair of gears and the two are meshed. A drive motor 16 is fixedly installed at the outer end of one of the drive boxes 12 to drive the rotation of the rotating wheels 14. By utilizing the cooperation between the drive motor 16 and the pair of rotating wheels 14, the annular sawtooth belt 15 moves back and forth at high speed between the pair of rotating wheels 14. The annular sawtooth belt 15, which moves back and forth repeatedly, cuts the positioned power pipe.

[0036] An elastic limiting assembly is fixedly connected between the end walls of a pair of drive boxes 12 on the side away from the positioning seat 2. The elastic limiting assembly includes a sliding block 17 fixed to the pair of drive boxes 12 and slidably connected to the inner wall of the hollow cavity 301. An elastic strap 18 is fixedly connected between the pair of sliding blocks 17. The elastic strap 18 is located below the annular serrated belt 15 and is also made of elastic rubber material. When the pair of drive boxes 12 move downward, the elastic strap 18 cuts the power pipe when the annular serrated belt 15 contacts it. Before cutting, the elastic strap 18 first contacts the end of the power pipe to be cut. After the drive box 12 continues to descend, the elastic strap 18 adheres to the upper surface of the power pipe and is stretched downwards to limit the end to be cut when the annular toothed belt 15 cuts the power pipe. The closer the annular toothed belt 15 is to the cutting groove 104, the greater the positioning tension of the elastic strap 18 on the upper end of the power pipe, thus the better the limiting effect, and the less likely the end of the power pipe to be cut will become uneven due to poor stability during the cutting process. Example 2:

[0037] Based on Example 1, this embodiment further optimizes the elastic support structure, improving its support and covering effect on the power pipe. Specifically:

[0038] Please see Figures 3-6 The elastic support band 10 is made of elastic rubber material. Anti-slip protrusions are distributed on the end wall of the elastic support band 10. After the elastic support band 10 moves upward with a pair of sliding flaps 9, it covers the bottom end of the power pipe and is pulled from a contracted state to a stretched state. When the elastic support band 10 reaches a large deformation state, it covers and limits the lower end of the power pipe with strong tension under the cooperation of the downward pressing upper abutment 7, thereby achieving positioning of the upper and lower ends of the power pipe respectively. Compared with fixed-point clamping and fixing, the positioning method of strip tension covering expands the positioning area and improves the positioning effect. When the radius of the power pipe is larger, the tension deformation of the elastic support band 10 is greater, resulting in greater tension and better support and covering effect on the power pipe. In addition, the anti-slip protrusions on the elastic support band 10 make it less likely for the elastic support band 10 to slip off from the power pipe.

[0039] A lower support piece 11 is fixedly connected to the middle of the bottom end of the elastic support band 10. A through groove through which the lower support piece 11 passes is opened on the bottom end wall of the fixing sleeve 5. A limiting groove 103 extending downward and matching the lower support piece 11 is opened on the inner end wall of the recessed cavity 102. The lower end of the lower support piece 11 passes through the channel and extends into the limiting groove 103. The addition of the lower support piece 11 is beneficial to limit and guide the tension of the elastic support band 10. When the elastic support band 10 is pulled upward and completely covers the lower end of the power pipe, After the lower support plate 11 rises with the support cavity 101, its lower end remains in the limiting groove 103, which plays a limiting role for the elastic support belt 10. On the one hand, it prevents slippage between the elastic support belt 10 and the power pipe. On the other hand, the lower support plate 11 supports the bottom end of the elastic support belt 10. The lower support plate 11, together with the upper abutment plate 7 which is in the same vertical direction, plays a fixed-point positioning role, which improves the clamping and positioning effect of the power pipe, that is, improves the stability of the power pipe placed on the cutting table 1.

[0040] In summary: This solution adds a positioning seat 2 that can move back and forth horizontally on the cutting table 1. The positioning seat 2 is equipped with an upper abutment 7 and an elastic support piece that are arranged vertically. After the power pipe to be cut is placed on the cutting table 1, the upper end face of the power pipe is initially positioned by the downward pressing upper abutment 7. Then, a pair of annular guide rails 8 are used to slide a pair of sliding flaps 9 upward along the inner wall of the fixed sleeve 5. The elastic support band 10 between the pair of sliding flaps 9 supports and limits the lower end of the power pipe in a taut state, so as to achieve dual positioning of the power pipe from the top and bottom. It is suitable for positioning power pipes of different diameters.

[0041] In addition, an elastic strap 18 is added inside the cutting seat 3, which moves up and down synchronously with the annular toothed belt 15. The elastic strap 18 is located below the annular toothed belt 15. During the cutting process of the annular toothed belt 15, the elastic strap 18 adheres to the upper end face of the power pipe and is stretched downwards to limit the cut end when the annular toothed belt 15 cuts the power pipe. The closer the annular toothed belt 15 is to the cutting groove 104, the greater the positioning tension of the elastic strap 18 on the upper end of the power pipe, and the better the limiting effect. It is not easy for the cut end of the power pipe to become uneven due to the loss of stability during the cutting process.

[0042] After a round of cutting operations is completed, the electric push cylinder 13 is used to lift the annular toothed belt 15 upward. The annular toothed belt 15 disengages from the cutting groove 104 and the cutting opening on the power pipe and resets upward. At the same time, the elastic strap 18 is elastically reset upward and disengages from the cut end of the power pipe. Subsequently, the operator removes the cut power pipe from the cutting table 1.

[0043] After removing the power pipe to be cut, the upper abutment 7 is driven upward according to the actual cutting length required, and a pair of sliding flaps 9 are driven upward using the annular guide rail 8. The upper abutment 7 and the elastic support belt 10 disengage from the upper and lower ends of the power pipe, respectively. At this time, the positioning seat 2 is moved away from the cutting seat 3 using the linear guide rail 4. Please refer to [link to relevant documentation]. Figure 10 After the cutting seat 3 moves to the end of the sinking cavity 102, the power pipe is clamped again by the upper abutment plate 7 and the elastic support belt 10, and the clamped power pipe is pushed horizontally to one side of the cutting seat 3 for secondary cutting.

[0044] The above are merely preferred embodiments of the present invention; however, the scope of protection of the present invention is not limited thereto; any equivalent substitutions or modifications made by those skilled in the art within the technical scope disclosed in the present invention, based on the technical solution and its improved concept, should be covered within the scope of protection of the present invention.

Claims

1. An MPP power pipe cutting device with a positioning and stabilizing mechanism, comprising a cutting table (1), wherein the upper end of the cutting table (1) is provided with a support cavity (101) for placing the power pipe and a recessed cavity (102) located in the middle of the support cavity (101), characterized in that: The upper end of the cutting table (1) is slidably mounted with a positioning seat (2) above the sink cavity (102) via a pair of linear guide rails (4), and a cutting seat (3) is fixedly mounted on one side of the upper end of the cutting table (1). The lower end wall of the positioning seat (2) is provided with an arc-shaped groove with openings at both the left and right ends. A fixed sleeve (5) extending into the recessed cavity (102) is fixedly sleeved in the arc-shaped groove. A through opening is provided on the upper end wall of the fixed sleeve (5). An elastic support is slidably installed inside the fixed sleeve (5). Annular guide rails (8) for driving the operation of the elastic support are fixedly installed on the outer end walls on both sides of the fixed sleeve (5). An electric push cylinder (6) is fixedly installed at the top of the positioning seat (2). The telescopic end of the electric push cylinder (6) passes through the arc-shaped groove and is fixedly connected to an upper abutment plate (7) initially located at the through opening. The cutting seat (3) has a hollow cavity (301) with the same opening at the bottom. Electric push cylinders (13) are fixed on both sides of the top of the cutting seat (3). The telescopic end of the electric push cylinder (13) passes through the hollow cavity and is fixed with a drive box (12) that is slidably installed therewith. A ring-shaped sawtooth belt (15) is driven between the pair of drive boxes (12). The upper wall of the cutting table (1) has a docking groove (105) on both sides corresponding to the position of the drive box (12). A cutting groove (104) is opened between the pair of docking grooves (105) located directly below the ring-shaped sawtooth belt (15) and connected to the support cavity (101). An elastic limiting component is fixed between the end walls of the pair of drive boxes (12) on the side away from the positioning seat (2). The elastic support includes sliding petals (9) that are slidably connected to the inner walls of both sides of the fixed sleeve (5), and an elastic support belt (10) is fixedly connected between the upper end walls of a pair of sliding petals (9) that are far apart from each other; both inner end walls of the fixed sleeve (5) are provided with sliding grooves for sliding connection of the sliding petals (9), and the inner end of the sliding groove is provided with a through groove that communicates with the annular guide rail (8), and the sliding block on the annular guide rail (8) passes through the through groove and is fixedly connected to the end wall of the sliding petal (9). The elastic support also includes a lower support piece (11) fixedly connected to the middle of the bottom end of the elastic support belt (10). A through groove through which the lower support piece (11) is provided on the bottom wall of the fixed sleeve (5). A limiting groove (103) extending downward and matching the lower support piece (11) is provided on the inner wall of the recessed cavity (102). The lower end of the lower support piece (11) passes through the channel and extends into the limiting groove (103).

2. The MPP power pipe cutting device with a positioning and stabilizing mechanism according to claim 1, characterized in that: The elastic support strip (10) is made of elastic rubber material, and anti-slip protrusions are distributed on the end wall of the elastic support strip (10).

3. The MPP power pipe cutting device with a positioning and stabilizing mechanism according to claim 1, characterized in that: A pair of drive boxes (12) are each rotatably mounted with a rotating wheel (14), and a gear is fixedly mounted on each pair of rotating wheels (14). The annular sawtooth belt (15) is mounted on the pair of gears and the two are meshed together. A drive motor (16) for rotating the rotating wheel (14) is fixedly mounted on the outer end of one of the drive boxes (12).

4. The MPP power pipe cutting device with a positioning and stabilizing mechanism according to claim 1, characterized in that: The elastic limiting component includes a sliding block (17) fixed on a pair of drive boxes (12) and slidably connected to the inner wall of the hollow cavity (301), and an elastic strap (18) is fixedly connected between the pair of sliding blocks (17).

5. The MPP power pipe cutting device with a positioning and stabilizing mechanism according to claim 4, characterized in that: The elastic strap (18) is located below the side of the annular serrated strap (15), and the elastic strap (18) is also made of elastic rubber material.

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