A local heating cutting device for insulating covering of overhead high-voltage line

Abstract

The application discloses a kind of overhead high-voltage line insulation coating with local heating cutting device, including front wheel group and rear wheel group, the front wheel group and rear wheel group are connected by frame;The frame is equipped with upper plate and lower plate, and the upper plate and lower plate are equipped with the same structure semicircle component, and the semicircle component of upper and lower position is connected and spliced as whole circle structure.This overhead high-voltage line insulation coating with local heating cutting device, servo motor drives screw rod positive rotation, screw rod rotation drives support rod elongation, support rod is separated in the process of elongation, and upper and lower wheel body is separated, and two semicircle arc body is separated, motor drive gear rotates, then cutting seat will along T type clamping groove along arc tooth circumferential motion around overhead high-voltage line, cutting knife also rotates around circle, to cut off the part of overhead high-voltage line on coating redundant portion, heating piece heats the part of coating, so that the part of cutting can be adhered to overhead high-voltage line more firmly.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of local heating cutting, in particular to a local heating cutting device for insulating coating of overhead high-voltage lines. BACKGROUND

[0002] The form of overhead line has become the main form of power transmission, and its safe and stable operation directly affects the reliability of the power supply system. Overhead line power transmission mainly adopts bare conductor form, especially the height of the bare conductor of distribution network is low, which is easy to contact with trees, buildings and other objects to form a short circuit. With the rapid development of distribution network and the increasing expansion of its scale, the planting of trees in the power supply area is increasing, and the influence of serious corrosion, bird damage and other factors, human or natural faults inevitably occur during operation, such as damage by external force, inter-phase short circuit, broken wire and other faults, which directly affect the production power and residential power of enterprises, and make the reliability of distribution network face new difficulties.

[0003] However, when the existing overhead high-voltage line is insulated, the length of each section of the overhead high-voltage line is consistent, so after the coating is completed, the excess material needs to be cut, and after cutting, heating is needed so that it can be attached to the overhead high-voltage line. However, the existing cutting is manually cut, which requires the operator to manually carry the equipment and heating equipment. Since the cutting is manual, the cutting edge is not smooth, and the heating is not uniform, which results in unsatisfactory overall coating effect. SUMMARY

[0004] The purpose of the present application is to provide a local heating cutting device for insulating coating of overhead high-voltage lines, which has a motor-driven gear rotation, so that the cutting seat will move along the T-shaped clamping groove along the arc teeth around the overhead high-voltage line in a circular motion, and the cutting knife will also rotate around the circle, thereby cutting off the excess part of the overhead high-voltage line after coating, and the heating sheet uniformly heats the coated part, so that the cut part can be firmly attached to the overhead high-voltage line, which has the advantages of solving the problems in the prior art.

[0005] To achieve the above purpose, the present application provides the following technical scheme: a local heating cutting device for insulating coating of overhead high-voltage lines, comprising a front wheel group and a rear wheel group, the front wheel group and the rear wheel group are connected through a frame;

[0006] The frame is provided with an upper plate and a lower plate, and the upper plate and the lower plate are both provided with semicircle assemblies of the same structure, and the semicircle assemblies at the upper and lower positions are connected and spliced into a whole circle structure;

[0007] The front wheel group and the rear wheel group each adopt two wheel bodies, which are arranged above and below and connected through a lifting assembly for adjusting the distance between the upper and lower wheel bodies, and the upper and lower wheel bodies are separated for the half-circle assembly in the upper and lower positions to move the overhead high-voltage line between the half-circle assemblies and clamp the overhead high-voltage line by the front wheel group and the rear wheel group and move along the overhead high-voltage line.

[0008] The frame is further provided with a power motor connected with the upper wheel body of the front wheel group for providing power for the movement of the device.

[0009] Further, the frame includes an upper frame and a lower frame, each of which is provided with two, and the two ends of the upper frame are penetrated by the shafts of the upper wheel bodies of the front wheel group and the rear wheel group, and the two ends of the lower frame are penetrated by the shafts of the lower wheel bodies of the front wheel group and the rear wheel group, and the upper plate is welded on the upper frame and the lower plate is welded on the lower frame.

[0010] Further, the half-circle assembly includes a half-circle arc body, a first partition plate, a second partition plate, a heating sheet, a half-circle track and a cutting assembly, and two half-circle arc bodies are respectively fixed on the opposite surfaces of the upper plate and the lower plate.

[0011] The first partition plate and the second partition plate are arranged side by side on the half-circle arc body, wherein the second partition plate is located in the middle of the half-circle arc body and the first partition plate is located at one side of the half-circle arc body, arc holes with the same diameter are processed at the centers of the first partition plate and the second partition plate, and the heating sheet is placed on the inner wall of the half-circle arc body between the first partition plate and the second partition plate.

[0012] The half-circle track is arranged on the other side of the second partition plate, and the movable cutting assembly is installed on the half-circle track.

[0013] Further, the cutting assembly includes a power moving assembly, a telescopic cutting assembly and a cutting seat, the power moving assembly is arranged in the cutting seat and engages with the half-circle track, one end of the telescopic cutting assembly is inserted into the cutting seat, and the other end of the telescopic cutting assembly faces the overhead high-voltage line.

[0014] Further, the inner ring of the half-circle track is provided with a T-shaped clamping groove, and the inner wall of the T-shaped clamping groove is fixed with half-circle arc teeth, and the two arc teeth are spliced to form an inner gear ring.

[0015] Further, the power moving assembly includes a gear, a circuit board and a transmission shaft, the bottom of the cutting seat is clamped into the T-shaped clamping groove, the gear is connected with the bottom of the cutting seat through the transmission shaft, wherein the gear engages with the arc teeth, the circuit board is arranged in the cutting seat, and the circuit board channel wire is electrically connected with the motor on the transmission shaft, the gear is driven to rotate by the motor and moves along the arc teeth to make a circular motion around the overhead high-voltage line.

[0016] Further, the telescopic cutting assembly comprises a cylinder, an air pump, a telescopic rod and a cutting knife, the air pump and the circuit board are arranged together, an air pipe of the air pump is arranged out of the cutting seat, the air pump is connected with the cylinder through a pipeline, one end of the telescopic rod is connected with the cylinder, the other end of the telescopic rod is connected with the cutting knife and arranged out of the cutting seat, and the circuit board is electrically connected with the air pump.

[0017] Further, the lifting assembly comprises a servo motor, a sleeve seat, a lead screw, a supporting rod and a guide block, the bottom end of the sleeve seat is fixed on the lower frame, the servo motor is arranged in the sleeve seat, the top end of the sleeve seat is provided with a slot, the guide block is fixed on the inner wall of the slot, one end of the lead screw is connected with the servo motor, the other end of the lead screw is arranged into the slot, the supporting rod is engaged with the lead screw, the side surface of the supporting rod is clamped on the guide block, the supporting rod is connected with the upper frame, the servo motor drives the lead screw to rotate, and drives the supporting rod to move up and down along the guide block, so as to drive the two half-circular arc bodies to separate or close.

[0018] Compared with the prior art, the beneficial effects of the present application are as follows:

[0019] 1、the local heating cutting device for the overhead high-voltage line insulation coating, the servo motor drives the lead screw to rotate in the positive direction, the lead screw drives the supporting rod to elongate, in the process of elongation, the upper frame and the lower frame are separated, the upper and lower wheel bodies are separated, and the two half-circular arc bodies are separated, after the overhead high-voltage line is inserted into the separated upper and lower wheel bodies and the two half-circular arc bodies, the arc grooves of the upper and lower wheel bodies are clamped on the overhead high-voltage line, the servo motor drives the lead screw to rotate in the reverse direction, the upper frame and the lower frame move towards each other, the overhead high-voltage line is clamped by the upper and lower wheel bodies, the upper and lower wheel bodies are clamped on the overhead high-voltage line, the overhead high-voltage line moves by friction, and in the process of movement, the overhead high-voltage line does not separate from the upper and lower wheel bodies.

[0020] 2、the local heating cutting device for the overhead high-voltage line insulation coating, the motor drives the gear to rotate, the cutting seat moves along the T-shaped clamping groove along the arc teeth to make a circular motion around the overhead high-voltage line, the position of the cutting knife is adjusted by the rotation of the cutting seat and the cylinder, and the cutting knife also rotates around the circle, so that the excess part of the overhead high-voltage line after coating is cut off, with the movement of the wheel body, the heating piece heats the coated part, so that the cut part can be more firmly attached to the overhead high-voltage line. BRIEF DESCRIPTION OF DRAWINGS

[0021] Figure 1 is the overall structure diagram of the present application;

[0022] Figure 2 is the half-circular arc body separation state diagram of the present application;

[0023] Figure 3 is the frame structure diagram of the present application;

[0024] Figure 4The splicing state diagram of the semicircle assembly of the application;

[0025] Figure 5 The separation state diagram of the semicircle assembly of the application;

[0026] Figure 6 The splicing internal state diagram of the semicircle arc body of the application;

[0027] Figure 7 The enlarged view of A of the application; Figure 6

[0028] Figure 8 The non-lifting state diagram of the lifting assembly of the application;

[0029] Figure 9 The lifting state diagram of the lifting assembly of the application.

[0030] In the figure: 1, front wheel group; 2, rear wheel group; 3, frame; 31, upper frame; 32, lower frame; 4, lifting assembly; 41, servo motor; 42, sleeve seat; 43, lead screw; 44, support rod; 45, guide block; 5, upper plate; 6, lower plate; 7, semicircle assembly; 71, semicircle arc body; 72, first partition plate; 73, second partition plate; 74, heating sheet; 75, semicircle track; 751, T-shaped clamping groove; 76, cutting assembly; 761, power moving assembly; 7611, gear; 7612, circuit board; 7613, transmission shaft; 762, telescopic cutting assembly; 7621, air cylinder; 7622, air pump; 7623, telescopic rod; 7624, cutting knife; 763, cutting seat; 8, power motor. DETAILED DESCRIPTION

[0031] The technical solutions in the embodiments of the application will be clearly and completely described with reference to the drawings in the embodiments of the application. Obviously, the described embodiments are only a part of the embodiments of the application, rather than all the embodiments of the application. Based on the embodiments in the application, all other embodiments obtained by a person of ordinary skill in the art without creative work fall within the protection scope of the application.

[0032] Please refer to Figures 1-2 The local heating cutting device for insulating covering of overhead high-voltage line comprises a front wheel group 1 and a rear wheel group 2, the front wheel group 1 and the rear wheel group 2 are connected through a frame 3, and the frame 3 connects the front wheel group 1 and the rear wheel group 2 together.

[0033] The frame 3 is provided with an upper plate 5 and a lower plate 6, the upper plate 5 and the lower plate 6 are both provided with semicircle assemblies 7 of the same structure, and the semicircle assemblies 7 at upper and lower positions are connected and spliced into a whole circle structure, the semicircle assemblies 7 at upper and lower positions are separated by separating the upper plate 5 and the lower plate 6, so as to facilitate moving the overhead high-voltage line into the semicircle assemblies 7. ​

[0034] The front wheel group 1 and the rear wheel group 2 each adopt two wheel bodies, which are arranged above and below and connected through the lifting assembly 4 for adjusting the distance between the upper and lower wheel bodies. The upper and lower wheel bodies are separated for the semicircular assembly 7 in the upper and lower positions, and the overhead high-voltage line is moved between the semicircular assemblies 7. The wheel bodies are provided with arc grooves matched with the overhead high-voltage line, and the front wheel group 1 and the rear wheel group 2 clamp the overhead high-voltage line and move along the overhead high-voltage line.

[0035] In assembly, the upper and lower wheel bodies are separated through the lifting assembly 4, the overhead high-voltage line is moved to the arc grooves of the upper and lower wheel bodies, and then the upper and lower wheel bodies are moved towards each other after the cooperation of the lifting assembly 4. The upper and lower wheel bodies clamp the overhead high-voltage line, move by friction, and the overhead high-voltage line does not come off the upper and lower wheel bodies during the movement.

[0036] The frame 3 is also provided with a power motor 8 connected with the upper wheel body of the front wheel group 1 for providing power for the movement of the device. The power motor 8 adopts a direct current motor, and the power motor 8 drives the upper wheel body to rotate after being powered.

[0037] Please refer to Figure 3 The frame 3 includes an upper frame 31 and a lower frame 32, and each of the upper frame 31 and the lower frame 32 is provided with two rods. The two ends of the upper frame 31 are penetrated by the shafts of the upper wheel bodies of the front wheel group 1 and the rear wheel group 2, and the two ends of the lower frame 32 are penetrated by the shafts of the lower wheel bodies of the front wheel group 1 and the rear wheel group 2. The upper plate 5 is welded on the upper frame 31, and the lower plate 6 is welded on the lower frame 32. The upper plate 5 and the lower plate 6 are arranged in parallel, and a counterweight is arranged at the bottom of the lower plate 6. The arrangement of the counterweight does not cause tilting during movement, so that the entire device is in a stable state.

[0038] Please refer to Figures 4-5 The semicircular assembly 7 includes a semicircular arc body 71, a first partition plate 72, a second partition plate 73, a heating sheet 74, a semicircular track 75, and a cutting assembly 76. Two semicircular arc bodies 71 are respectively fixed on the opposite surfaces of the upper plate 5 and the lower plate 6.

[0039] The first partition plate 72 and the second partition plate 73 are arranged side by side on the semicircular arc body 71. The first partition plate 72 and the second partition plate 73 are used to separate the space. The second partition plate 73 is located in the middle of the semicircular arc body 71, and the first partition plate 72 is located at one edge of the semicircular arc body 71. Arc holes with the same diameter are processed at the centers of the first partition plate 72 and the second partition plate 73. The arrangement of the arc holes forms a circular hole for the overhead high-voltage line to penetrate when splicing. The heating sheet 74 is placed on the inner wall of the semicircular arc body 71 between the first partition plate 72 and the second partition plate 73. The arrangement of the heating sheet 74 is used to heat the material coated on the surface of the overhead high-voltage line. The arrangement of the first partition plate 72 and the second partition plate 73 forms a relatively closed space, reduces heat loss, and improves the heating efficiency.

[0040] The semi-circular track 75 is arranged on the other side of the second partition plate 73, and a movable cutting assembly 76 is arranged on the semi-circular track 75.

[0041] Please refer to Figures 6-7 The cutting assembly 76 comprises a power moving assembly 761, a telescopic cutting assembly 762 and a cutting seat 763. The power moving assembly 761 is arranged in the cutting seat 763 and engages with the semi-circular track 75. One end of the telescopic cutting assembly 762 is inserted into the cutting seat 763, and the other end of the telescopic cutting assembly 762 faces the overhead high-voltage line.

[0042] The inner ring of the semi-circular track 75 is provided with a T-shaped clamping groove 751. The inner wall of the T-shaped clamping groove 751 is fixed with two semi-circular arc teeth. The two arc teeth are spliced to form an inner ring gear. The T-shaped clamping groove 751 is arranged to prevent the cutting seat 763 from being separated and deviated during movement.

[0043] The power moving assembly 761 comprises a gear 7611, a circuit board 7612 and a transmission shaft 7613. The bottom of the cutting seat 763 is clamped into the T-shaped clamping groove 751. The gear 7611 is connected to the bottom of the cutting seat 763 through the transmission shaft 7613. The gear 7611 engages with the arc teeth. The circuit board 7612 is arranged in the cutting seat 763, and the circuit board 7612 is electrically connected to the motor on the transmission shaft 7613 through a channel lead wire. The gear 7611 is driven to rotate by the motor, and moves along the arc teeth to make a circular motion around the overhead high-voltage line. The circuit board 7612 records the control software through programming, so as to implement the software on the circuit board 7612 through remote wireless control.

[0044] The telescopic cutting assembly 762 comprises a gas cylinder 7621, a gas pump 7622, a telescopic rod 7623 and a cutting knife 7624. The gas pump 7622 and the circuit board 7612 are arranged together. The gas pipe of the gas pump 7622 penetrates out of the cutting seat 763. The gas pump 7622 is connected to the gas cylinder 7621 through a pipeline. One end of the telescopic rod 7623 is connected to the gas cylinder 7621. The other end of the telescopic rod 7623 penetrates out of the cutting seat 763 and is connected to the cutting knife 7624. The circuit board 7612 is electrically connected to the gas pump 7622 through a channel lead wire. The circuit board 7612 is used to control the gas pump 7622. When the gas pump 7622 injects or extracts gas into or out of the gas cylinder 7621, the telescopic rod 7623 will also be elongated or shortened. During the elongation of the telescopic rod 7623, the upper and lower wheel bodies are separated, and the two semi-circular assemblies 7 are also separated. The separation width is greater than the diameter of the overhead high-voltage line, so that the overhead high-voltage line can be aligned with the arc holes of the first partition plate 72 and the second partition plate 73.

[0045] Please refer to Figures 8-9The lifting assembly 4 comprises a servo motor 41, a sleeve 42, a lead screw 43, a support rod 44 and a guide block 45. The bottom end of the sleeve 42 is fixed on the lower frame 32. The servo motor 41 is arranged in the sleeve 42. The top end of the sleeve 42 is provided with a slot. The guide block 45 is fixed on the inner wall of the slot. One end of the lead screw 43 is connected with the servo motor 41. The other end of the lead screw 43 penetrates into the slot. The servo motor 41 drives the lead screw 43 to rotate. The support rod 44 is engaged with the lead screw 43. The side surface of the support rod 44 is clamped on the guide block 45. The support rod 44 is connected with the upper frame 31. The servo motor 41 drives the lead screw 43 to rotate. In the process of rotation, the support rod 44 is limited to drive the support rod 44 to move up and down along the guide block 45, so as to drive the two half-circular assemblies 7 to separate or close.

[0046] Working principle: the servo motor 41 drives the lead screw 43 to rotate forward. The lead screw 43 drives the support rod 44 to elongate. In the process of elongation, the upper frame 31 and the lower frame 32 are separated. The upper and lower wheel bodies are separated. The two half-circular bodies 71 are separated. After the overhead high-voltage line is inserted into the separated upper and lower wheel bodies and the two half-circular bodies 71, the arc grooves of the upper and lower wheel bodies are clamped on the overhead high-voltage line. The arc holes of the first partition plate 72 and the second partition plate 73 also accommodate the overhead high-voltage line. The servo motor 41 drives the lead screw 43 to rotate reversely. The upper frame 31 and the lower frame 32 move towards each other to clamp the overhead high-voltage line through the upper and lower wheel bodies.

[0047] When the motor drive gear 7611 rotates, the cutting seat 763 moves along the T-shaped clamping slot 751 along the arc teeth around the overhead high-voltage line. By rotating the cutting seat 763 to cooperate with the cylinder 7621 to adjust the position of the cutting knife 7624, the cutting knife 7624 also rotates around the circle, so as to cut off the excess part wrapped on the overhead high-voltage line. With the movement of the wheel body, the heating piece 74 heats the wrapped part, so that the cut part can be firmly attached to the overhead high-voltage line.

[0048] In summary: the local heating cutting device for overhead high-voltage line insulation coating, the frame 3 is provided with the upper plate 5 and the lower plate 6, the upper plate 5 and the lower plate 6 are both provided with the semicircle assembly 7 with the same structure, and the semicircle assembly 7 at the upper and lower positions is connected and spliced into a whole circle structure, the upper and lower semicircle assemblies 7 are separated by separating the upper plate 5 and the lower plate 6, so that the overhead high-voltage line is conveniently moved into the semicircle assembly 7; the distance between the upper and lower wheel bodies is adjusted by the lifting assembly 4 connection, the upper and lower wheel bodies are separated for the semicircle assembly 7 at the upper and lower positions, the overhead high-voltage line is moved between the semicircle assemblies 7, the wheel body is provided with an arc groove matched with the overhead high-voltage line, and the front wheel group 1 and the rear wheel group 2 clamp the overhead high-voltage line and move along the overhead high-voltage line; during assembly, the upper and lower wheel bodies are separated by the lifting assembly 4, the overhead high-voltage line is moved to the arc grooves of the upper and lower wheel bodies, then the upper and lower wheel bodies are moved towards each other after cooperating with the lifting assembly 4, and the upper and lower wheel bodies clamp the overhead high-voltage line, which is moved by friction, and the overhead high-voltage line does not come off the upper and lower wheel bodies during the movement.

[0049] The motor drives the gear 7611 to rotate, and the gear 7611 moves along the arc teeth around the overhead high-voltage line in a circular motion, the circuit board 7612 records the control software through programming, so that the software on the circuit board 7612 is implemented through remote wireless control. The air pump 7622 injects or extracts gas into the air cylinder 7621, the servo motor 41 drives the lead screw 43 to rotate, the supporting rod 44 is limited during rotation, and the supporting rod 44 moves up and down along the guide block 45 to drive the two semicircle assemblies 7 to separate or close. With the movement of the wheel body, the heating sheet 74 heats the coated part, so that the cut part can be more firmly attached to the overhead high-voltage line.

[0050] It should be noted that, in the present document, relational terms such as first and second and the like can be used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Moreover, the terms "comprises", "comprising", or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but can include other elements not expressly listed or inherent to such process, method, article, or apparatus.

[0051] Although embodiments of the present application have been shown and described, it is to be understood that various modifications, substitutions, and alterations can be made to the embodiments without departing from the spirit and scope of the present application, which is defined by the appended claims and their equivalents.

Claims

1. A local heating cutting device for insulating overhead high-voltage lines, comprising a front wheel set (1) and a rear wheel set (2), characterized in that: The front wheel group (1) and the rear wheel group (2) are connected through the frame (3); the frame (3) is provided with an upper plate (5) and a lower plate (6), the upper plate (5) and the lower plate (6) are both provided with semicircle assemblies (7) of the same structure, and the semicircle assemblies (7) at the upper and lower positions are connected and spliced into a whole circle structure; the front wheel group (1) and the rear wheel group (2) each adopt two wheel bodies, the wheel bodies are arranged at the upper and lower positions of each group, and are connected through a lifting assembly (4) for adjusting the distance between the upper and lower wheel bodies, the upper and lower wheel bodies are separated for separating the semicircle assemblies (7) at the upper and lower positions, the overhead high-voltage line is moved to between the semicircle assemblies (7), and the front wheel group (1) and the rear wheel group (2) clamp the overhead high-voltage line and move along the overhead high-voltage line; the frame (3) is further provided with a power motor (8), the power motor (8) is connected with the upper wheel body of the front wheel group (1), and is used for providing power for the movement of the device; The semicircle assembly (7) comprises a semicircle arc body (71), a first partition plate (72), a second partition plate (73), a heating sheet (74), a semicircle track (75) and a cutting assembly (76), two semicircle arc bodies (71) are fixed on the opposite surfaces of the upper plate (5) and the lower plate (6) respectively; the first partition plate (72) and the second partition plate (73) are arranged side by side on the semicircle arc body (71), wherein the second partition plate (73) is located at the middle part of the semicircle arc body (71), the first partition plate (72) is located at one side of the semicircle arc body (71), arc holes with the same diameter are processed at the centers of the first partition plate (72) and the second partition plate (73), and the heating sheet (74) is placed on the inner wall of the semicircle arc body (71) between the first partition plate (72) and the second partition plate (73); the semicircle track (75) is arranged on the other side of the second partition plate (73), and the movable cutting assembly (76) is installed on the semicircle track (75); The cutting assembly (76) comprises a power moving assembly (761), a telescopic cutting assembly (762) and a cutting seat (763), the power moving assembly (761) is arranged in the cutting seat (763) and engages with the semi-circular track (75), one end of the telescopic cutting assembly (762) is inserted into the cutting seat (763), and the other end of the telescopic cutting assembly (762) faces the overhead high-voltage line; the telescopic cutting assembly (762) comprises a gas cylinder (7621), a gas pump (7622), a telescopic rod (7623) and a cutting knife (7624), the gas pump (7622) and the circuit board (7612) are arranged together, a gas pipe of the gas pump (7622) penetrates out of the cutting seat (763), the gas pump (7622) is also connected with the gas cylinder (7621) through a pipeline, one end of the telescopic rod (7623) is connected with the gas cylinder (7621), the other end of the telescopic rod (7623) penetrates out of the cutting seat (763) and is connected with the cutting knife (7624), and the circuit board (7612) channel lead wire is electrically connected with the gas pump (7622), the circuit board (7612) is used for controlling the gas pump (7622), the gas pump (7622) injects or extracts gas into or out of the gas cylinder (7621), then the telescopic rod (7623) is also elongated or shortened, in the elongation process of the telescopic rod (7623), the upper and lower wheel bodies are separated at the same time, and the two semi-circular assemblies (7) are also separated, and the separation width is greater than the diameter of the overhead high-voltage line, so that the overhead high-voltage line can be aligned with the arc holes of the first and second baffle plates (72 and 73).

2. The local heating cutting device for insulating covering of overhead high voltage line according to claim 1, characterized in that: The frame (3) comprises upper frames (31) and lower frames (32), two upper frames (31) and two lower frames (32) are arranged, and the two ends of the upper frames (31) are penetrated by the shafts of the upper wheel bodies of the front wheel group (1) and the rear wheel group (2), and the two ends of the lower frames (32) are penetrated by the shafts of the lower wheel bodies of the front wheel group (1) and the rear wheel group (2), the upper plates (5) are welded on the upper frames (31), and the lower plates (6) are welded on the lower frames (32).

3. The apparatus according to claim 1, wherein: the apparatus is used for cutting overhead high-voltage line insulation coating. The inner ring of the semi-circular track (75) is provided with a T-shaped clamping groove (751), the inner wall of the T-shaped clamping groove (751) is fixed with semi-circular arc teeth, and the two arc teeth are spliced to form an inner gear ring.

4. The apparatus according to claim 1, wherein: The power moving assembly (761) comprises a gear (7611), a circuit board (7612) and a transmission shaft (7613), the bottom of the cutting seat (763) is clamped into the T-shaped clamping groove (751), and the gear (7611) is connected with the bottom of the cutting seat (763) through the transmission shaft (7613), wherein the gear (7611) engages with the arc teeth, the circuit board (7612) is arranged in the cutting seat (763), and the circuit board (7612) channel lead wire is electrically connected with a motor on the transmission shaft (7613), the gear (7611) is driven to rotate through the motor, and circular motion is performed along the arc teeth around the overhead high-voltage line.

5. The apparatus according to claim 1, wherein: The lifting assembly (4) comprises a servo motor (41), a sleeve (42), a lead screw (43), a support rod (44) and a guide block (45), the bottom end of the sleeve (42) is fixed on the lower frame (32), the servo motor (41) is arranged in the sleeve (42), the top end of the sleeve (42) is provided with a slot, the guide block (45) is fixed on the inner wall of the slot, one end of the lead screw (43) is connected with the servo motor (41), the other end of the lead screw (43) penetrates into the slot, the support rod (44) is engaged with the lead screw (43), the side surface of the support rod (44) is clamped on the guide block (45), the support rod (44) is connected with the upper frame (31), the servo motor (41) drives the lead screw (43) to rotate, drives the support rod (44) to move up and down along the guide block (45), and is used for driving two half circular assemblies (7) to separate or close.

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