Modified polyethylene electric pipe cutting system

Abstract

The invention discloses a modified polyethylene electric pipe cutting system and belongs to the technical field of electric pipe cutting. The invention aims to solve the problems that burrs are easily generated at the fracture surface and the quality is influenced in the existing saw cutting mode of the electric power pipe. Comprising a base, a pipe cutting mechanism, two supporting mechanisms, a distance adjusting mechanism and a controller, the two supporting mechanisms are correspondingly arranged on the two sides of the base in the length direction and used for supporting an electric pipe, and the pipe cutting mechanism is arranged between the two supporting mechanisms in the middle and located above the electric pipe; the two supporting mechanisms are synchronously driven by the distance adjusting mechanism to move inwards or outwards in the length direction of the base. The controller controls the adjusting displacement of the distance adjusting mechanism according to the cutting length and then controls the electric heating wire to heat to the expected temperature; and after the electric heating wire reaches the expected temperature, the hydraulic telescopic rod is controlled to extend downwards at a constant speed, and the electric heating wire cuts the electric pipe. The electric pipe cutting device is used for cutting electric pipes.

Description

Technical Field

[0001] The invention relates to a modified polyethylene electric power pipe cutting system, belonging to the technical field of electric power pipe cutting. Background Art

[0002] The power pipe is made of modified polyethylene (PE) through hot-dip plastic process, and its inner and outer surfaces are coated with epoxy resin, which has excellent corrosion resistance. Facing complex use environments, this power pipe has good electrical insulation and will not produce electrical corrosion; at the same time, it has the advantages of low water absorption, high mechanical strength, and low friction coefficient. It can be used safely for a long time and can effectively prevent damage to plant roots and soil environmental stress.

[0003] When using the power pipe, it needs to be cut in sections to meet different usage requirements. However, the existing saw cutting method will produce burrs on the cross section of the power pipe, affecting the overall quality of the power pipe. Therefore, it is necessary to provide a new cutting method to improve the cutting quality. Summary of the invention

[0004] Aiming at the problem that the existing saw cutting method of electric power pipes easily generates burrs at the cross section, thus affecting the quality, the present invention provides a modified polyethylene electric power pipe cutting system.

[0005] A modified polyethylene electric power pipe cutting system of the present invention comprises a base, a pipe cutting mechanism, two supporting mechanisms, a distance adjustment mechanism and a controller.

[0006] Two supporting mechanisms are correspondingly arranged on both sides of the base along the length direction for supporting the electric pipe, and the pipe cutting mechanism is centrally arranged between the two supporting mechanisms and located above the electric pipe; the two supporting mechanisms are synchronously driven by the distance adjustment mechanism to realize the movement inward or outward along the length direction of the base;

[0007] The pipe cutting mechanism is fixed to the base through a bracket and connected to the crossbeam of the bracket;

[0008] The pipe cutting mechanism includes a hydraulic telescopic rod, a horizontal auxiliary plate, a positive electrode column, a negative electrode column, an elastic telescopic rod, a pulley and an electric heating wire.

[0009] The head end of the hydraulic telescopic rod is connected to the crossbeam of the bracket, and the end is centrally connected to the upper surface of the horizontal auxiliary plate; the positive electrode column and the negative electrode column are symmetrically connected on both sides of the lower surface of the horizontal auxiliary plate; a pair of elastic telescopic rods are also correspondingly arranged on the inner side of the positive electrode column and the negative electrode column on the lower surface of the horizontal auxiliary plate, and a pulley is connected to the end of each elastic telescopic rod; a heating wire is connected between the positive electrode column and the negative electrode column, and the heating wire is slidably connected to the two pulleys;

[0010] The controller is used to control the adjustment displacement of the distance adjustment mechanism according to the cutting length of the electric pipe, and then control the power of the heating wire to be on, so that the heating wire is heated to the expected temperature, and the expected temperature is determined according to the density of the electric pipe; after the heating wire reaches the expected temperature, the hydraulic telescopic rod is controlled to extend downward at a uniform speed, so that the heating wire cuts the electric pipe.

[0011] According to the modified polyethylene electric power pipe cutting system of the present invention, the distance adjustment mechanism comprises a gear and two racks.

[0012] The gear is centrally arranged on the base, meshed with a rack on each side, and the head end of each rack is connected to a supporting mechanism; the center of the gear is on the axis of the hydraulic telescopic rod; the length of the rack is selected according to the shortest distance between the two supporting mechanisms.

[0013] According to the modified polyethylene electric power pipe cutting system of the present invention, the gear is driven to rotate by the motor, thereby driving the supporting mechanism to move through the rack.

[0014] According to the modified polyethylene electric power pipe cutting system of the present invention, the distance adjustment mechanism further comprises a positioning plate, a threaded rod and a nut.

[0015] The nut is connected to a supporting mechanism, and the end of the threaded rod passes through the nut and overlaps in the central blind hole of the positioning plate, and the positioning plate is arranged on the base close to the gear;

[0016] The threaded rod is driven to rotate by a motor, so that the supporting mechanism moves along with the threaded rod, thereby driving the rack to mesh along the gear.

[0017] According to the modified polyethylene electric power pipe cutting system of the present invention, the support mechanism comprises a slide seat, a pair of legs, a pair of spring support rods, a pair of rotating connectors and an arc plate.

[0018] The head end of each rack is connected to a slide seat, and a slider is arranged at the bottom of the slide seat, sliding along a guide groove arranged on the base in the length direction; a pair of supporting feet are fixedly arranged on both sides of the slide seat, each supporting foot is connected to the lower end of a spring support rod, the upper end of the spring support rod is fixedly connected to one end of the rotating connecting piece, and the other end of the rotating connecting piece is fixedly connected to the bottom surface of one side of the arc plate;

[0019] A pair of supporting legs and a pair of rotating connecting pieces are symmetrically arranged on both sides below the arc-shaped plate;

[0020] Fixing pieces are arranged on the arc-shaped plate for fixing the electric power pipes.

[0021] According to the modified polyethylene electric power pipe cutting system of the present invention, if the distance adjustment mechanism includes a nut, the nut is centrally fixed in the slide groove seat.

[0022] The modified polyethylene power pipe cutting system according to the present invention further includes a limiting frame plate. A limiting frame plate is arranged outside each rack for limiting the movement direction of the rack; the limiting frame plate is fixed on the base;

[0023] The base has four support legs, and elastic pads are arranged at the connection surfaces of each support leg and the base.

[0024] The modified polyethylene power pipe cutting system according to the present invention further includes a buffer support frame. The support platform of the buffer support frame is directly above the center of the gear;

[0025] The support platform includes two support petals, which are arranged oppositely along the length direction of the power pipe, and a gap is formed between the two support petals. The center line of the gap corresponds to the position of the heating wire; the upper contour line of each support petal is arc-shaped for supporting the power pipe, and an elastic layer is arranged on the upper contour line.

[0026] On the upper surface of the base of the modified polyethylene power pipe cutting system according to the present invention, a scale is provided. The scale takes the center of the gear as the zero scale and is marked along the movement direction of the support mechanism towards the outer frame of the base.

[0027] For the modified polyethylene power pipe cutting system according to the present invention, if the cutting length is P, the maximum length Q between the outer edges of the two arc-shaped plates is 2P, and the minimum is P;

[0028] When P < Q < 2P, the length that the head end of the power pipe extends out of the corresponding arc-shaped plate is

[0029] Advantages of the present invention: The present invention cuts the power pipe in the way of melting by the heating wire. After setting the temperature of the heating wire according to the density of the power pipe, the heating wire can efficiently and highly quality cut the power pipe driven by the hydraulic telescopic rod, avoiding the cross-section burrs generated by the saw cutting method.

[0030] The present invention sets two support mechanisms to support the power pipe. By adjusting the distance between the two support mechanisms through the distance adjustment mechanism, the position of the support mechanism can be flexibly adjusted according to the cutting length of the power pipe, and the cutting of pipes of various sizes can be realized by combining the control of the controller.

[0031] In the pipe cutting mechanism of the present invention, an elastic telescopic rod is provided. When the heating wire cuts the pipe and generates a tension state, combined with the cooperation of the elastic telescopic rod and the pulley, the buffering of the cutting force can be realized to prevent the heating wire from breaking. BRIEF DESCRIPTION OF THE DRAWINGS

[0032] Figure 1 is the overall structural schematic diagram of the modified polyethylene power pipe cutting system described in the present invention;

[0033] Figure 2 It is a detailed structural schematic diagram of the modified polyethylene power pipe cutting system of the present invention;

[0034] Figure 3 yes Figure 1 The main view;

[0035] Figure 4 yes Figure 3 AA view;

[0036] Figure 5 is a schematic diagram of a support platform of a buffer support frame;

[0037] Figure 6 yes Figure 5 Side view of

[0038] Figure 7 It is a control flow chart of the modified polyethylene electric power pipe cutting system of the present invention. DETAILED DESCRIPTION

[0039] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. 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.

[0040] It should be noted that, in the absence of conflict, the embodiments of the present invention and the features in the embodiments may be combined with each other.

[0041] The present invention will be further described below in conjunction with the accompanying drawings and specific embodiments, but they are not intended to limit the present invention.

[0042] Specific implementation method 1. Combination Figures 1 to 4 and Figure 7 As shown, the present invention provides a modified polyethylene electric power pipe cutting system, comprising a base 100, a pipe cutting mechanism 200, two supporting mechanisms 300, a distance adjustment mechanism 400 and a controller 500.

[0043] Two supporting mechanisms 300 are correspondingly arranged on both sides of the base 100 along the length direction for supporting the electric pipe, and the pipe cutting mechanism 200 is centrally arranged between the two supporting mechanisms 300 and located above the electric pipe; the two supporting mechanisms 300 are synchronously driven by the distance adjustment mechanism 400 to realize the movement inward or outward along the length direction of the base 100;

[0044] The pipe cutting mechanism 200 is fixed to the base 100 through the bracket 600 and connected to the crossbeam of the bracket 600;

[0045] The pipe cutting mechanism 200 includes a hydraulic telescopic rod 201, a horizontal auxiliary plate 202, a positive electrode column 203, a negative electrode column 204, an elastic telescopic rod 205, a pulley 206 and a heating wire 207.

[0046] The front end of the hydraulic telescopic rod 201 is connected to the crossbeam of the bracket 600, and the rear end is centrally connected to the upper surface of the horizontal auxiliary plate 202; the positive electrode column 203 and the negative electrode column 204 are symmetrically connected on both sides of the lower surface of the horizontal auxiliary plate 202; a pair of elastic telescopic rods 205 are also correspondingly arranged on the inner side of the positive electrode column 203 and the negative electrode column 204 on the lower surface of the horizontal auxiliary plate 202, and a pulley 206 is connected to the end of each elastic telescopic rod 205; a heating wire 207 is connected between the positive electrode column 203 and the negative electrode column 204, and the heating wire 207 is slidably connected to the two pulleys 206; the auxiliary supports formed by the two pulleys 206 and the corresponding components are symmetrically distributed on both sides of the horizontal auxiliary plate 202.

[0047] The controller 500 is used to control the adjustment displacement of the distance adjustment mechanism 400 according to the cutting length of the electric pipe, and then control the power of the heating wire 207 to be on, so that the heating wire 207 is heated to the expected temperature, and the expected temperature is determined according to the density of the electric pipe; after the heating wire 207 reaches the expected temperature, the hydraulic telescopic rod 201 is controlled to extend downward at a uniform speed, so that the heating wire 207 cuts the electric pipe.

[0048] The pipe cutting mechanism 200 in this embodiment uses hydraulic drive to drive the electric heating wire 207 to cut the electric pipe. In order to provide the electric heating wire 207 with a buffer space during the pipe cutting process to prevent it from breaking under the condition of large resistance, an elastic telescopic rod 205 is provided to buffer the reaction force on the electric heating wire 207 during the pipe cutting process, thereby ensuring the reliable operation of the cutting device.

[0049] like Figure 1 and 2 As shown, the bracket 600 may include two inclined plates and a cross beam, and the two inclined plates support the cross beam in an inclined state.

[0050] During the cutting process, the hydraulic telescopic rod 201 is activated to drive the horizontal auxiliary plate 202 to move downward, and the heating wire 207 is energized and heated between the positive electrode column 203 and the negative electrode column 204, and the heated heating wire moves downward to achieve cutting of the power pipe. The pressure generated during the pipe cutting process will tighten the heating wire 207, and at this time, the elastic telescopic rod 205 will shrink with the cooperation of the pulley 206, which can achieve buffering of the wire cutting force.

[0051] Further, combined with Figure 1 and Figure 2As shown, the distance adjustment mechanism 400 includes a gear 401 and two racks 402.

[0052] The gear 401 is centrally arranged on the base 100, and is meshed with a rack 402 on each side. The head end of each rack 402 is connected to a support mechanism 300; the center of the gear 401 is on the axis of the hydraulic telescopic rod 201; the length of the rack 402 is selected according to the shortest distance between the two support mechanisms 300.

[0053] In this embodiment, the gear 401 and the rack 402 are meshed to guide the movement direction of the support mechanism 300. Figure 1 and Figure 2 As shown, each rack 402 is connected to a distance adjustment mechanism 400 to form an L-shaped structure, and the two L-shaped structures are arranged in a centrally symmetrical manner. Since the free end of each rack 402 will gradually approach the other side of the support mechanism 300 during the meshing movement with the gear 401, the other side is the side of the support mechanism 300 that is not connected to the rack 402, so it is necessary to select the length of the rack 402 according to the shortest distance set between the two support mechanisms 300 to meet the requirements of the pipe cutting length.

[0054] In this embodiment, the distance adjustment mechanism 400 can be driven in two forms:

[0055] One is to directly drive the gear 401: the gear 401 is driven to rotate by a motor, thereby driving the support mechanism 300 to move through the rack 402. This method is symmetrical with the gear 401 as the drive, and drives the support mechanism 300 to change position through engagement with the rack 402.

[0056] The other is to realize the movement of the support mechanism 300 by driving the threaded rod 404:

[0057] The distance adjustment mechanism 400 further includes a positioning plate 403, a threaded rod 404 and a nut 405.

[0058] The nut 405 is connected to a supporting mechanism 300, and the end of the threaded rod 404 passes through the nut 405 and overlaps in the central blind hole of the positioning plate 403. The positioning plate 403 is arranged on the base 100 near the gear 401;

[0059] The threaded rod 404 is driven to rotate by a motor, so that the support mechanism 300 moves along with the threaded rod 404 , thereby driving the rack 402 to mesh along the gear 401 .

[0060] The second driving form of the distance adjustment mechanism 400 is to add an additional threaded driving member as a driving object, and drive the support mechanism 300 to move linearly by the rotation of the threaded rod 404. In this case, the gear is no longer used as a force output member, but when the threaded rod 404 drives the support mechanism 300 to move, it pushes the rack to move in a linear direction in a manner of meshing with the gear. Combined with the sliding of the slider at the bottom of the slide seat 301 along the guide groove, the operation of the support mechanism 300 can be more stable, so that the axis of the power pipe will not be offset.

[0061] Going a step further, combined Figures 1 to 4 As shown, the support mechanism 300 includes a slide seat 301, a pair of legs 302, a pair of spring support rods 303, a pair of rotating connectors 304 and an arc plate 305.

[0062] The head end of each rack 402 is connected to a slide seat 301, and a slider is set at the bottom of the slide seat 301, which slides along the guide groove set on the base 100 in the length direction; a pair of supporting feet 302 are fixedly set on both sides of the slide seat 301, and each supporting foot 302 is connected to the lower end of a spring support rod 303, and the upper end of the spring support rod 303 is fixedly connected to one end of the rotating connecting member 304, and the other end of the rotating connecting member 304 is fixedly connected to the bottom surface of one side of the arc plate 305;

[0063] A pair of legs 302 and a pair of rotating connectors 304 are symmetrically arranged on both sides below the arc-shaped plate 305;

[0064] The arc plate 305 is provided with a fixing piece for fixing the electric power pipe. After the electric power pipe having been positioned is fixed by the fixing piece, displacement due to the force during the cutting process can be prevented.

[0065] In this embodiment, the support foot 302 is fixed in the slide slot seat 301, and the support foot 302 and the spring support rod 303 are rotatable; the rotating connector 304 has two connection ends, and the two connection ends can produce relative rotation, so the rotating connector 304 and the spring support rod 303 and the arc plate 305 are all fixedly connected, but because the support foot 302 and the spring support rod 303 are rotatable, and the arc plate 305 and the spring support rod 303 are rotatable, when the arc plate 305 supports the power pipe and is subjected to downward cutting force, it can effectively produce a buffering effect to avoid rigid collision between the heating wire and the pipe.

[0066] In this embodiment, a pair of legs 302 are arranged in mirror symmetry in the slide slot seat 301 , and a pair of rotating connectors 304 are arranged symmetrically on the bottom surface of the arc plate 305 .

[0067] When in use, after adjusting the distance between the two supporting mechanisms 300, the power pipe is placed on the two arc-shaped plates 305. With the assistance of a pair of supporting feet and a pair of rotating connectors, the spring support rod 303 elastically supports the power pipe to ensure the stability of the cutting process; while cutting, the spring support rod is forced to contract to achieve force buffering.

[0068] In the second driving form, the distance adjustment mechanism 400 includes a nut 405 , and the nut 405 is centrally fixed in the slide groove seat 301 .

[0069] In this embodiment, the cutting system also includes a limit frame plate 700, and a limit frame plate 700 is arranged on the outer side of each rack 402 to limit the movement direction of the rack 402; the limit frame plate 700 is fixed on the base 100; corresponding to each rack 402, multiple limit frames 700 can be arranged to ensure the stable operation of the rack 402.

[0070] The base 100 has four supporting legs 101, and an elastic pad is arranged at the connection surface between each supporting leg 101 and the base 100. The arrangement of the elastic pad can ensure the stability of the cutting system as a whole when it is working.

[0071] Going a step further, combined Figure 5 and Figure 6 As shown, the cutting system further includes a buffer support frame 800, and the support platform of the buffer support frame 800 is located directly above the center of the gear 401;

[0072] The support platform includes two support petals, which are arranged opposite to each other along the length direction of the power pipe and form a gap between the two support petals, and the center line of the gap corresponds to the position of the heating wire 207; the upper contour line of each support petal is arc-shaped, which is used to support the power pipe, and an elastic layer is arranged on the upper contour line.

[0073] The buffer support frame 800 in this embodiment fixes the support platform just above the center of the gear 401 in the form of a bracket to support the cutting position of the power pipe, thereby preventing the power pipe from rotating downward under the downward force of the heating wire when cutting, thereby affecting the cutting effect.

[0074] While supporting the pipe, the heating wire needs to have an unobstructed space under the pipe at the moment of cutting the pipe, so as to smoothly cut the pipe. Therefore, two supporting petals are used in this embodiment to form a moving space for the heating wire. The upper contour line of the supporting petal is set to an arc shape, so that the pipe can be placed stably, and its elastic layer further provides a buffer space and can also prevent scratches on the pipe.

[0075] In this embodiment, a scale is provided on the upper surface of the base 100. The scale takes the center of the gear 401 as the zero scale and is marked along the moving direction of the support mechanism 300 towards the outer frame of the base 100.

[0076] After determining the cutting length, according to the correspondence between the rotation of the gear or the threaded rod 404 and the linear displacement, and combining the current distance between the two support mechanisms 300, the rotation angle or the number of turns of the gear or the threaded rod 404 can be determined, so as to realize the automatic control of the distance adjustment mechanism 400.

[0077] In order to ensure the quality of pipe cutting, in this embodiment, if the cutting length is P, the maximum length Q between the outer edges of the two arc-shaped plates 305 is 2P and the minimum is P.

[0078] When P < Q < 2P, the length that the head end of the power pipe extends out of the corresponding arc-shaped plate 305 is

[0079] Combined with the scale on the base 100, the fixing position of the power pipe can be accurately determined, so as to cut the power pipe to the target length.

[0080] For example, if the cutting length is 20 cm, the maximum length between the outer edges of the two arc-shaped plates 305 is 40 cm and the minimum is 20 cm. When Q is adjusted to 30 cm, according to the above formula, at this time, the head end of the power pipe needs to extend out of the corresponding arc-shaped plate 305 by 5 cm. At this time, the distance between the outer edge of the arc-shaped plate 305 and the cutting line is 15 cm, and a 20 cm long pipe section can be obtained after cutting.

[0081] Although the present invention has been described herein with reference to specific embodiments, it should be understood that these embodiments are merely examples of the principles and applications of the present invention. Therefore, it should be understood that many modifications can be made to the exemplary embodiments, and other arrangements can be designed, as long as they do not deviate from the spirit and scope of the present invention defined by the appended claims. It should be understood that different dependent claims and the features described herein can be combined in a manner different from that described in the original claims. It should also be understood that the features described in connection with a single embodiment can be used in other described embodiments.

Claims

1. A modified polyethylene power pipe cutting system, characterized in that It comprises a base (100), a pipe cutting mechanism (200), two supporting mechanisms (300), a distance adjustment mechanism (400) and a controller (500). Two supporting mechanisms (300) are arranged on both sides of the base (100) along the length direction to support the electric power pipe, and the pipe cutting mechanism (200) is arranged centrally between the two supporting mechanisms (300) and is located above the electric power pipe; the two supporting mechanisms (300) are synchronously driven by the distance adjustment mechanism (400) to achieve inward or outward movement along the length direction of the base (100); The pipe cutting mechanism (200) is fixed on the base (100) via a bracket (600) and connected to a crossbeam of the bracket (600); The pipe cutting mechanism (200) comprises a hydraulic telescopic rod (201), a horizontal auxiliary plate (202), a positive electrode column (203), a negative electrode column (204), an elastic telescopic rod (205), a pulley (206) and an electric heating wire (207). The head end of the hydraulic telescopic rod (201) is connected to the crossbeam of the bracket (600), and the end is centrally connected to the upper surface of the horizontal auxiliary plate (202); the positive electrode column (203) and the negative electrode column (204) are symmetrically connected to the two sides of the lower surface of the horizontal auxiliary plate (202); a pair of elastic telescopic rods (205) are also correspondingly arranged on the inner side of the positive electrode column (203) and the negative electrode column (204) on the lower surface of the horizontal auxiliary plate (202), and a pulley (206) is connected to the end of each elastic telescopic rod (205); a heating wire (207) is connected between the positive electrode column (203) and the negative electrode column (204), and the heating wire (207) is slidably connected to the two pulleys (206); The controller (500) is used to control the adjustment displacement of the distance adjustment mechanism (400) according to the cutting length of the electric power pipe, and then control the power supply of the electric heating wire (207) to be turned on, so that the electric heating wire (207) is heated to a desired temperature, and the desired temperature is determined according to the density of the electric power pipe; after the electric heating wire (207) reaches the desired temperature, the hydraulic telescopic rod (201) is controlled to extend downward at a uniform speed, so that the electric heating wire (207) cuts the electric power pipe.

2. The modified polyethylene electric power pipe cutting system according to claim 1, characterized in that: The distance adjustment mechanism (400) comprises a gear (401) and two racks (402). The gear (401) is centrally arranged on the base (100), and is meshed with a rack (402) on both sides, and the head end of each rack (402) is connected to a support mechanism (300); the center of the gear (401) is on the axis of the hydraulic telescopic rod (201); and the length of the rack (402) is selected according to the shortest distance between the two support mechanisms (300).

3. The modified polyethylene electric power pipe cutting system according to claim 2, characterized in that: The gear (401) is driven to rotate by a motor, thereby driving the support mechanism (300) to move through the rack (402).

4. The modified polyethylene electric power pipe cutting system according to claim 2, characterized in that: The distance adjustment mechanism (400) further comprises a positioning plate (403), a threaded rod (404) and a nut (405). The nut (405) is connected to a supporting mechanism (300), and the end of the threaded rod (404) passes through the nut (405) and overlaps in the central blind hole of the positioning plate (403), and the positioning plate (403) is arranged on the base (100) near the gear (401); The threaded rod (404) is driven to rotate by a motor, so that the support mechanism (300) moves along with the threaded rod (404), thereby driving the rack (402) to perform meshing movement along the gear (401).

5. The modified polyethylene electric power pipe cutting system according to claim 3 or 4, characterized in that: The support mechanism (300) comprises a slide seat (301), a pair of supporting feet (302), a pair of spring support rods (303), a pair of rotating connecting members (304) and an arc-shaped plate (305). The head end of each rack (402) is connected to a slide seat (301), and a sliding block is arranged at the bottom of the slide seat (301) to slide along a guide groove arranged on the base (100) in the length direction; a pair of supporting feet (302) are fixedly arranged on both sides of the slide seat (301) correspondingly, and each supporting foot (302) is connected to the lower end of a spring support rod (303), and the upper end of the spring support rod (303) is fixedly connected to one end of a rotating connecting piece (304), and the other end of the rotating connecting piece (304) is fixedly connected to the bottom surface of one side of the arc plate (305); A pair of supporting legs (302) and a pair of rotating connecting members (304) are symmetrically arranged on both sides below the arc-shaped plate (305); A fixing piece is arranged on the arc-shaped plate (305) for fixing the electric power pipe.

6. The modified polyethylene electric power pipe cutting system according to claim 5, characterized in that: If the distance adjustment mechanism (400) includes a nut (405), the nut (405) is centrally fixed in the slide groove seat (301).

7. The modified polyethylene electric power pipe cutting system according to claim 5, characterized in that: It also includes a limiting frame plate (700), which is arranged on the outer side of each rack (402) and is used to limit the movement direction of the rack (402); the limiting frame plate (700) is fixed on the base (100); The base (100) has four supporting legs (101), and an elastic pad is arranged at the connection surface between each supporting leg (101) and the base (100).

8. The modified polyethylene electric power pipe cutting system according to claim 7, characterized in that: It also includes a buffer support frame (800), wherein the support platform of the buffer support frame (800) is located directly above the center of the gear (401); The support platform comprises two support petals, which are arranged opposite to each other along the length direction of the electric pipe and form a gap between the two support petals, and the center line of the gap corresponds to the position of the heating wire (207); the upper contour line of each support petal is arc-shaped and is used to support the electric pipe, and an elastic layer is arranged on the upper contour line.

9. The modified polyethylene electric power pipe cutting system according to claim 5, characterized in that: A scale is provided on the upper surface of the base (100), the scale takes the center of the gear (401) as the zero scale, and marks are made along the movement direction of the support mechanism (300) toward the outer frame direction of the base (100).

10. The modified polyethylene electric power pipe cutting system according to claim 9, characterized in that: If the cutting length is P, the maximum length Q between the outer edges of the two arc-shaped plates (305) is 2P and the minimum is P; when P < Q < 2P, the length by which the head end of the electric power pipe extends out of the corresponding arc-shaped plate (305) is

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