A repair device for the conductive contact surface of a strain current-carrying plate of a transmission line and its usage method

Abstract

The present invention relates to the technical field of repairing strain drainage plates, and specifically to a repair device and a usage method for the conductive contact surface of a strain drainage plate of a transmission line, including a drainage plate body and a guide rail, and the guide rail is fixedly installed on the drainage plate body through a bracket. For this repair device and usage method for the conductive contact surface of a strain drainage plate of a transmission line, the probe extends into the bottom along the scratches and grooves. Compared with the traditional scraping repair, it detects according to the depths of the scratches and grooves, and inputs equal air into the right wall groove at this depth, so that the released scraper can accurately correspond to the deepest positions of the scratches and grooves, ensuring that the scraper can avoid excessive ineffective scraping of the plate surface to the greatest extent. Moreover, this quantitative scraping by detection automatically operates during the translation of the external box without the need for additional operation by the operator. In the case of no scratches and grooves, grinding repair will not be carried out, so that the overall device only needs to be started and closed regularly by manual or programming control, and has good flexibility and convenience in use.

Description

Technical Field

[0001] The present invention relates to the technical field of repairing strain drainage plates, and particularly to a repairer for the conductive contact surface of a strain drainage plate of a transmission line and a usage method thereof. Background Technique

[0002] Line electrical hardware is an important part of the distribution overhead line and is an important component related to the safe operation of the line. During the long-term operation of ultra (extra) high voltage transmission lines, affected by external forces, construction quality, and full-load operation during peak load periods, etc., the connection of the strain clamp drainage plate of the strain tower of the transmission line is prone to looseness, resulting in an ineffective electrical contact surface, ineffective local electrical contact, a reduction in the actual contact area, an increase in resistance, and abnormal temperature rise. When judging a fault according to the defect level of the heating part of the drainage plate, measures such as live working or annual power outage maintenance need to be taken to improve the reliability and safety of the transmission line. The heating problem of the drainage plate of the strain tower of the line is often found in infrared temperature measurement. If this problem is not solved in time, it will seriously affect the safe and stable operation of the transmission line. The repair and treatment of drainage plate defects generally involve opening the drainage plate during power outage maintenance, using a wrench to open the drainage plate bolts, cleaning the foreign matter on the loose surface of the drainage plate. When there are scratches or deformations on the surface, a file is also needed to grind the plane.

[0003] The existing patent (publication number: CN111711041A) discloses a special device for repairing the conductive contact surface of a strain drainage plate of a transmission line, including a machine base which can be fixed to the strain drainage plate through a fixing device; a machine head, on which a driving motor and a tool assembly are arranged, and the driving motor is used to drive the tool assembly to grind the surface scratches of the strain drainage plate; a lifting mechanism, which is connected to the machine head and is used to drive the machine head to approach or move away from the strain drainage plate in the vertical direction; a transverse movement mechanism, which is slidably arranged on the machine base and is connected to the lifting mechanism and is used to drive the lifting mechanism to reciprocate in the horizontal direction. The above equipment repairs the drainage plate by scraping with a tool, but it is easy to cause deeper damage to the debris on the plate surface, and there is a lack of monitoring and control of the scraping degree. When in use, the operator needs to measure the depth of scratches and grooves and then adjust the tool, and the usability is poor.

[0004] In view of this, we propose a repairer for the conductive contact surface of a strain drainage plate of a transmission line and a usage method thereof. Summary of the Invention

[0005] The object of the present invention is to provide a repair device and a using method for the conductive contact surface of a strain current-carrying plate of a transmission line, so as to solve the problems raised in the above-mentioned background technology that the cutting tool of the existing equipment is likely to act on the debris on the plate surface, causing deeper damage, and lacking the monitoring and control of the scraping degree. When in use, the operator needs to measure the depth of scratches and grooves and then adjust the cutting tool, resulting in poor usability. To achieve the above object, the present invention provides the following technical solution: A repair device for the conductive contact surface of a strain current-carrying plate of a transmission line, including a current-carrying plate body and a guide rail, the guide rail is fixedly installed on the current-carrying plate body through a bracket, and a sliding seat is slidably arranged on the guide rail.

[0006] A motor and a lead screw for driving the displacement of the sliding seat are arranged on the guide rail, and a repair component for scraping the current-carrying plate body is installed on the sliding seat.

[0007] The repair component includes an external connection box, a left wall groove and a right wall groove are respectively opened in the external connection box, and the bottoms of the left wall groove and the right wall groove penetrate through the external connection box and communicate with the outside. A scraping knife is arranged in the right wall groove, and a plurality of syringe needles are fixedly arranged in the left wall groove, and the syringe needles are distributed in a single row along the groove body.

[0008] A probe is slidably connected in the syringe needle, and a spring is arranged inside the syringe needle, and the spring pushes the probe to move downward along the syringe needle.

[0009] Preferably, the external connection box is composed of a left box body and a right box body, the left wall groove is located in the left box body, and the right wall groove is located in the right box body.

[0010] A self-checking device is arranged in the left box body and the right box body.

[0011] Preferably, the self-checking device includes a sliding groove opened inside the left box body, sliding rails are arranged on the front and rear sides inside the sliding groove, and a sliding beam is slidably connected up and down between the two sliding rails, and a damper for preventing the sliding beam from moving by itself is arranged on the sliding rail.

[0012] Through grooves communicating with the sliding groove are opened on the surface of the syringe needle and inside the left box body, a buckle is fixedly connected to the side surface of the probe, and the buckle passes through the through groove and extends into the sliding groove, and the buckle is located above the sliding beam.

[0013] An air chamber is opened inside the left box body, a piston is slidably connected up and down inside the air chamber, a lead screw is rotatably connected inside the air chamber, the piston is threadedly connected with the lead screw, and the clockwise rotation of the lead screw drives the piston to move upward.

[0014] An end groove communicating with the sliding groove is opened inside the left box body, the top end of the lead screw penetrates through the air chamber and extends into the end groove, a nut sleeve is fixedly arranged at the middle position of the sliding beam, and the nut sleeve is located in the end groove and is threadedly connected with the lead screw, and the downward movement of the nut sleeve drives the lead screw to rotate clockwise.

[0015] An air storage hole communicating with the top of the air chamber is formed inside the left box body, a notch matching the air storage hole is formed on the right box body, and the notch communicates with the right wall groove.

[0016] A retractor cooperating with the scraper is arranged on the left box body and the right box body.

[0017] Preferably, the retractor includes a semi-circular groove formed on the side surface of the right box body, and the left box body is set to a semi-circular structure adapted to the semi-circular groove.

[0018] Arc grooves are formed on the front and rear inner side walls of the semi-circular groove, buckles are convexly arranged on the front and rear side surfaces of the left box body, and the left box body is slidably connected to the semi-circular groove along the arc grooves through the buckles.

[0019] A rubber block is fixedly arranged on one side of the surface of the left box body opposite to the semi-circular groove, and the rubber block passes through the notch and presses against the surface of the scraper.

[0020] When the left box body slides counterclockwise, the rubber block pushes the scraper to move upward, and when the left box body slides clockwise, the rubber block releases the scraper.

[0021] Preferably, a ball is rollingly embedded at the bottom end of the probe.

[0022] Preferably, the thread pattern on the surface of the lead screw is divided into two parts, the inclination angle of the thread on the upper side located in the end groove is twice the inclination angle of the thread on the lower side located in the air chamber.

[0023] Preferably, the rubber block is set to a wedge-shaped block structure with a thinner upper part and a thicker lower part.

[0024] A method for using a repair device for the conductive contact surface of a strain current-carrying plate of a transmission line includes the following steps:

[0025] S1. Start the motor and the lead screw to drive the sliding seat to reciprocate along the guide rail, so that the scraper on the sliding seat and the external box scrapes the plate surface of the current-carrying plate body to remove scratches and grooves on the plate surface;

[0026] S2. In the initial startup stage of the motor, the external box and the scraper move from right to left. During this process, the probe on the external box first contacts the current-carrying plate body, and the debris on the plate surface is first swept away during the movement. When encountering scratches and grooves, the spring in the needle tube pushes the probe to extend into them to pick out the stone debris embedded in the scratches and grooves;

[0027] S3. The scraper is kept in a constant position in the right wall groove by negative pressure suction. When the external box and the probe move from right to left and encounter scratches and grooves, the probe extends into the bottom thereof. During this process, the buttons on the probe surface move synchronously and push the slide beam to move downward quantitatively. The nut sleeve on the slide beam drives the screw to rotate clockwise and drives the piston to move upward, pressing the air in the air chamber into the right wall groove along the air storage hole, so that the air volume in the right wall groove increases and releases the scraper downward by a certain distance.

[0028] S4. When the external box moves from right to left, the left box body rotates slightly counterclockwise due to the reaction force of the board surface, so that the rubber block pushes the scraper upward. At this time, the gap between the scraper blade and the board surface increases. During this process, the air in the air chamber is compressed in the air storage hole. When the external box returns and moves from left to right, the left box body rotates slightly clockwise due to the reaction force of the board surface, so that the rubber block breaks away from the contact with the scraper and releases the scraper. At this time, the air in the air storage hole is injected into the left wall groove, and the scraper in the right wall groove lowers the blade by controlling the air volume in the groove.

[0029] Compared with the prior art, the present invention has the following beneficial effects:

[0030] In the present invention, the probe on the external box contacts the drainage plate body, and the debris on the plate surface is first cleared during the movement. When encountering scratches and grooves, the spring in the needle tube pushes the probe into them to pick out stones and debris embedded in the scratches and grooves. Compared with the traditional method of using scraping parts to directly contact the plate surface, the above-mentioned probe can clean the plate surface and the debris in the scratches and grooves before scraping, avoiding the debris from being sandwiched between the scraper and the plate surface, and causing deeper scratches along the plate surface as the scraper moves, so that the overall equipment has a better repair effect.

[0031] In the present invention, the probe is extended into the bottom along the scratches and grooves. During this process, the button on the surface of the probe moves synchronously and pushes the sliding beam to move downward quantitatively. The nut sleeve on the sliding beam drives the screw to rotate clockwise and drives the piston to move upward, pressing the air in the air chamber into the right wall groove along the air storage hole, so that the air volume in the right wall groove increases and the scraper is released downward for a certain distance. Compared with traditional scraping and grinding repair, the above-mentioned probe can detect according to the depth of the scratches and grooves, and input equivalent air into the right wall groove at the depth, so that the released scraper can accurately correspond to the deepest position of the scratches and grooves, so as to ensure that the scraper avoids excessive and ineffective scraping of the board surface to the greatest extent. The detection and quantitative scraping is automatically operated during the translation of the external box, and no additional operation is required by the operator. If there are no scratches or grooves, no grinding and repair will be performed, so that the overall equipment only needs to be started and shut down regularly by manual or programmed control, and has good flexibility and convenience in use.

[0032] In the present invention, when the external box moves from right to left, the left box body is subjected to a reaction force from the plate surface and undergoes a counterclockwise slight rotation, causing the rubber block to push the scraper upward. At this time, the gap between the cutting edge of the scraper and the plate surface increases. During this process, the air in the air chamber is compressed in the air storage hole. When the external box returns and moves from left to right, the left box body is subjected to a reaction force from the plate surface and undergoes a clockwise slight rotation, causing the rubber block to disengage from the scraper and releasing the scraper. At this time, the air in the air storage hole is injected into the left wall groove, and the scraper in the right wall groove descends its cutting edge through the control of the air volume in the groove. In this way, during the probe cleaning and depth detection, the scraper is lifted and locked to avoid contact with the plate surface and affecting the stable operation of the equipment. When the plate surface is being scraped and repaired, the scraper is controlled by gas, causing the scraper to be pressed against the plate surface by the gas until the moving scraper finishes scraping and repairing the scratches and grooves on the plate surface, so as to achieve a flexible and progressive contact between the scraper and the plate surface. BRIEF DESCRIPTION OF THE DRAWINGS

[0033] Figure 1 is a three-dimensional structural schematic diagram of the present invention;

[0034] Figure 2 is an exploded view of the present invention;

[0035] Figure 3 is a three-dimensional structural schematic diagram of the external box of the present invention;

[0036] Figure 4 is the explosion of the left box body and the right box body of the present invention Figure 1 ;

[0037] Figure 5 is the explosion of the left box body and the right box body of the present invention Figure 2 ;

[0038] Figure 6 is an exploded view of the left box body and the syringe of the present invention;

[0039] Figure 7 is a three-dimensional structural cross-sectional view of the syringe of the present invention;

[0040] Figure 8 is a side cross-sectional view of the external box in the cleaning and detection state of the present invention;

[0041] Figure 9 is a three-dimensional structural cross-sectional view of the external box of the present invention;

[0042] Figure 10 is a three-dimensional structural cross-sectional view of the left box body of the present invention;

[0043] Figure 11 is of the present invention Figure 10 The enlarged view of part A.

[0044] In the figure: 1, the main body of the drainage plate; 2, the guide rail; 3, the sliding seat; 4, the motor; 5, the repair component; 51, the external box; 511, the left box body; 512, the right box body; 52, the left wall groove; 53, the right wall groove; 54, the scraper; 55, the syringe; 56, the probe; 57, the spring; 58, the self-inspector; 581, the chute; 582, the slide rail; 583, the sliding beam; 584, the through groove; 585, the buckle; 586, the air chamber; 587, the piston; 588, the lead screw; 589, the end groove; 5810, the nut sleeve; 5811, the air storage hole; 5812, the notch; 5813, the retractor; 58131, the semi-circular groove; 58132, the arc groove; 58133, the buckle; 58134, the rubber block. Detailed implementation manners

[0045] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present invention.

[0046] Please refer to Figures 1 to 11 , the present invention provides a technical solution: a repair device for the conductive contact surface of a strain drainage plate of a transmission line, including the main body 1 of the drainage plate and the guide rail 2. The guide rail 2 is fixedly installed on the main body 1 of the drainage plate through a bracket, and a sliding seat 3 is slidably arranged on the guide rail 2;

[0047] A motor 4 and a lead screw for driving the sliding seat 3 to displace are arranged on the guide rail 2, and a repair component 5 for scraping the main body 1 of the drainage plate is installed on the sliding seat 3;

[0048] The repair component 5 includes an external box 51. A left wall groove 52 and a right wall groove 53 are respectively opened in the external box 51, and the bottoms of the left wall groove 52 and the right wall groove 53 penetrate through the external box 51 and communicate with the outside. A scraper 54 is arranged in the right wall groove 53. The scraper 54 is kept in a constant position in the right wall groove 53 by negative pressure suction. When in use, the motor 4 and the lead screw are started to drive the sliding seat 3 to reciprocate along the guide rail 2, so that the scraper 54 on the sliding seat 3 and the external box 51 scrapes the plate surface of the main body 1 of the drainage plate to remove scratches and grooves on the plate surface. A plurality of syringes 55 are fixedly arranged in the left wall groove 52, and the syringes 55 are arranged in a single row along the groove body;

[0049] A probe 56 is slidably connected inside the syringe 55, and a spring 57 is arranged inside the syringe 55. The spring 57 pushes the probe 56 to move downward along the syringe 55. At the initial start-up stage of the motor 4, the external box 51 and the scraper 54 move from right to left. During this process, the probe 56 on the external box 51 first contacts the drainage plate body 1, and sweeps away the sundries on the plate surface during the movement. When encountering scratches or grooves, the spring 57 in the syringe 55 pushes the probe 56 to extend into them to pick out the stones and sundries embedded in the scratches and grooves.

[0050] In this embodiment, as Figure 1 , Figure 2 , Figure 3 , Figure 4 , Figures 5 to 11 shown, the external box 51 is composed of a left box body 511 and a right box body 512. The left wall groove 52 is located inside the left box body 511, and the right wall groove 53 is located inside the right box body 512;

[0051] A self-checking device 58 is arranged inside the left box body 511 and the right box body 512.

[0052] In this embodiment, as Figure 1 , Figure 2 , Figure 3 , Figure 4 , Figures 5 to 11 shown, the self-checking device 58 includes a sliding groove 581 opened inside the left box body 511. Guide rails 582 are arranged on the front and rear sides inside the sliding groove 581. A sliding beam 583 is slidably connected up and down between the two guide rails 582. A damping is arranged on the guide rails 582 to prevent the sliding beam 583 from moving by itself. During the process of the probe 56 extending into the bottom of the scratch or groove, the buckle 585 on the surface of the probe 56 moves synchronously and pushes the sliding beam 583 to move downward quantitatively;

[0053] A through groove 584 communicating with the sliding groove 581 is opened on the surface of the syringe 55 and inside the left box body 511. A buckle 585 is fixedly connected to the side surface of the probe 56, and the buckle 585 extends through the through groove 584 into the sliding groove 581. The buckle 585 is located above the sliding beam 583;

[0054] An air chamber 586 is opened inside the left box body 511. A piston 587 is slidably connected up and down inside the air chamber 586. A lead screw 588 is rotatably connected inside the air chamber 586. The piston 587 is threadedly connected to the lead screw 588, and the clockwise rotation of the lead screw 588 drives the piston 587 to move upward;

[0055] An end slot 589 communicating with the chute 581 is provided inside the left box body 511. The top end of the lead screw 588 penetrates through the air chamber 586 and extends into the end slot 589. A nut sleeve 5810 is fixedly arranged at the middle position of the sliding beam 583, and the nut sleeve 5810 is located in the end slot 589 and is threadedly connected with the lead screw 588. The downward movement of the nut sleeve 5810 drives the lead screw 588 to rotate clockwise;

[0056] An air storage hole 5811 communicating with the top of the air chamber 586 is provided inside the left box body 511. A notch 5812 matching with the air storage hole 5811 is provided on the right box body 512, and the notch 5812 communicates with the right wall groove 53. The quantitative downward movement of the sliding beam 583 causes the nut sleeve 5810 to drive the lead screw 588 to rotate clockwise, and drives the piston 587 to move upward, pressing the air in the air chamber 586 into the right wall groove 53 along the air storage hole 5811, so that the amount of air in the right wall groove 53 increases and the scraper 54 is released downward by a certain distance;

[0057] A retractor 5813 matching with the scraper 54 is provided on the left box body 511 and the right box body 512.

[0058] In this embodiment, as Figure 1 、 Figure 2 、 Figure 3 、 Figure 4 、 Figures 5 to 11 shown, the retractor 5813 includes a semi-circular groove 58131 opened on the side surface of the right box body 512, and the left box body 511 is provided with a semi-circular structure adapted to the semi-circular groove 58131;

[0059] Arc grooves 58132 are opened on the front and rear inner side walls of the semi-circular groove 58131. Buckles 58133 are convexly arranged on the front and rear side surfaces of the left box body 511, and the left box body 511 is slidably connected in the semi-circular groove 58131 through the buckles 58133 along the arc grooves 58132;

[0060] A rubber block 58134 is fixedly arranged on one side of the surface of the left box body 511 opposite to the semi-circular groove 58131, and the rubber block 58134 passes through the notch 5812 and presses against the surface of the scraper 54;

[0061] When the left box body 511 slides counterclockwise, the rubber block 58134 pushes the scraper 54 upward, and when the left box body 511 slides clockwise, the rubber block 58134 releases the scraper 54. When the external box 51 moves from right to left, the left box body 511 undergoes a counterclockwise micro-rotation due to the reaction force from the plate surface, causing the rubber block 58134 to push the scraper 54 upward. At this time, the gap between the cutting edge of the scraper 54 and the plate surface increases. During this process, the air in the air chamber 586 is compressed in the air storage hole 5811. When the external box 51 returns and moves from left to right, the left box body 511 undergoes a clockwise micro-rotation due to the reaction force from the plate surface, causing the rubber block 58134 to disengage from the scraper 54 and release the scraper 54. At this time, the air in the air storage hole 5811 is injected into the left wall groove 52.

[0062] In this embodiment, as Figure 1 , Figure 2 , Figure 3 , Figure 4 , Figures 5 to 11 shown, a ball is rollingly embedded at the bottom end of the probe 56. The probe 56 makes direct contact with the drainage plate body 1 by using the ball, and the rolling friction between the two can prevent damage to the plate surface caused by the displacement of the probe 56.

[0063] In this embodiment, as Figure 1 , Figure 2 , Figure 3 , Figure 4 , Figures 5 to 11 shown, the thread pattern on the surface of the lead screw 588 is divided into upper and lower parts. The inclination angle of the thread on the upper side located in the end groove 589 is twice that of the thread on the lower side located in the air chamber 586. The large inclination angle thread on the upper side enables the nut sleeve 5810 to push the lead screw 588 to rotate, and the small inclination angle thread on the lower side enables the lead screw 588 to drive the piston 587 to displace, while the piston 587 cannot drive the lead screw 588 to rotate unidirectionally, thereby ensuring the control stability of the air volume for the scraper 54.

[0064] In this embodiment, as Figure 1 , Figure 2 , Figure 3 , Figure 4 , Figures 5 to 11 shown, the rubber block 58134 is set as a wedge-shaped block structure with a thinner upper part and a thicker lower part. The rubber block 58134 of this structure can always contact the scraper 54 with its thick part and push it upward when rotating upward, and disengage from the scraper 54 and release it when rotating downward.

[0065] A method for using a repair device for the conductive contact surface of a strain drainage plate of a transmission line includes the following steps:

[0066] S1. Start the motor 4 and the lead screw to drive the slide block 3 to reciprocate along the guide rail 2, so that the scraper 54 on the slide block 3 and the external box 51 grinds the plate surface of the drainage plate body 1 to remove scratches and grooves on the plate surface;

[0067] S2, at the initial start-up stage of the motor 4, the external box 51 and the scraper 54 move from right to left. During this process, the probe 56 on the external box 51 first contacts the drainage plate body 1, and removes the debris on the plate surface during the movement. When encountering scratches and grooves, the spring 57 in the needle tube 55 pushes the probe 56 into the scratches and grooves to pick out the stones and debris embedded in the scratches and grooves;

[0068] S3, the scraper 54 is kept in a constant position in the right wall groove 53 by negative pressure suction. When the external box 51 and the probe 56 move from right to left and encounter scratches and grooves, the probe 56 extends into the bottom thereof. During this process, the button 585 on the surface of the probe 56 moves synchronously and pushes the slide beam 583 to move downward quantitatively. The nut sleeve 5810 on the slide beam 583 drives the screw rod 588 to rotate clockwise and drives the piston 587 to move upward, pressing the air in the air chamber 586 into the right wall groove 53 along the air storage hole 5811, so that the air volume in the right wall groove 53 increases and releases the scraper 54 downward by a certain distance;

[0069] S4. When the external box 51 moves from right to left, the left box body 511 rotates slightly counterclockwise due to the reaction force of the board surface, so that the rubber block 58134 pushes the scraper 54 to move upward. At this time, the gap between the blade of the scraper 54 and the board surface increases. During this process, the air in the air chamber 586 is compressed in the air storage hole 5811, and when the external box 51 returns to its original position and moves from left to right, the left box body 511 rotates slightly clockwise due to the reaction force of the board surface, so that the rubber block 58134 breaks away from the contact with the scraper 54, releasing the scraper 54. At this time, the air in the air storage hole 5811 is injected into the left wall groove 52, and the scraper 54 in the right wall groove 53 lowers its blade by controlling the air volume in the groove.

[0070] The above shows and describes the basic principles, main features and advantages of the present invention. Technical personnel in this industry should understand that the present invention is not limited to the above embodiments. The above embodiments and descriptions are only preferred examples of the present invention and are not used to limit the present invention. Without departing from the spirit and scope of the present invention, the present invention may have various changes and improvements, which fall within the scope of the present invention to be protected. The scope of protection of the present invention is defined by the attached claims and their equivalents.

Claims

1. A conductive contact surface repairer for a transmission line tension drain plate, comprising a drain plate body (1) and a guide rail (2), characterized in that: The guide rail (2) is fixedly mounted on the guide plate body (1) via a bracket, and a sliding seat (3) is slidably arranged on the guide rail (2); The guide rail (2) is provided with a motor (4) and a lead screw for driving the slide seat (3) to move, and the slide seat (3) is provided with a repair component (5) for scraping and grinding the guide plate body (1); The repair component (5) comprises an external box (51), wherein a left wall groove (52) and a right wall groove (53) are respectively provided in the external box (51), and the bottoms of the left wall groove (52) and the right wall groove (53) penetrate the external box (51) and are in communication with the outside, a scraper (54) is provided in the right wall groove (53), and a plurality of needle tubes (55) are fixedly provided in the left wall groove (52), and the needle tubes (55) are distributed in a single row along the groove body; A probe (56) is slidably connected inside the needle tube (55), and a spring (57) is arranged inside the needle tube (55), and the spring (57) pushes the probe (56) to move downward along the needle tube (55); The external box (51) is composed of a left box body (511) and a right box body (512), the left wall groove (52) is located in the left box body (511), and the right wall groove (53) is located in the right box body (512); A self-test device (58) is provided in the left box body (511) and the right box body (512); The self-test device (58) comprises a slide groove (581) opened inside the left box body (511), and slide rails (582) are arranged on both the front and rear sides of the slide groove (581), and a slide beam (583) is connected between the two slide rails (582) in an up-and-down sliding manner, and a damper is arranged on the slide rail (582) to prevent the slide beam (583) from self-movement; A through slot (584) communicating with the slide slot (581) is provided on the surface of the needle tube (55) and inside the left box body (511); a button (585) is fixedly connected to the side surface of the probe (56); the button (585) passes through the through slot (584) and extends into the slide slot (581); the button (585) is located on the upper side of the slide beam (583); An air chamber (586) is provided inside the left box body (511), and a piston (587) is slidably connected to the inside of the air chamber (586) in an up-and-down manner. A screw rod (588) is rotatably connected to the inside of the air chamber (586), and the piston (587) is threadedly connected to the screw rod (588), and the screw rod (588) rotates clockwise to drive the piston (587) to move upward; An end groove (589) communicating with the slide groove (581) is provided inside the left box body (511); the top end of the screw rod (588) penetrates the air chamber (586) and extends into the end groove (589); a nut sleeve (5810) is fixedly provided at the middle position of the slide beam (583); the nut sleeve (5810) is located in the end groove (589) and is threadedly connected to the screw rod (588); the nut sleeve (5810) moves downward to drive the screw rod (588) to rotate clockwise; The left box body (511) is provided with an air storage hole (5811) in communication with the top of the air chamber (586), and the right box body (512) is provided with a notch (5812) matching with the air storage hole (5811), and the notch (5812) is in communication with the right wall groove (53); The left box body (511) and the right box body (512) are provided with a retractor (5813) that matches the scraper (54); The retractable device (5813) comprises a semicircular groove (58131) formed on the side surface of the right box body (512), and the left box body (511) is configured as a semicircular structure adapted to the semicircular groove (58131); The front and rear inner walls of the semicircular groove (58131) are provided with arc grooves (58132); the front and rear side surfaces of the left box body (511) are both protrudingly provided with buckles (58133); and the left box body (511) is slidably connected to the semicircular groove (58131) along the arc grooves (58132) via the buckles (58133); A rubber block (58134) is fixedly provided on one side of the surface of the left box body (511) opposite to the semicircular groove (58131), and the rubber block (58134) passes through the notch (5812) and presses against the surface of the scraper (54); The left box body (511) slides counterclockwise to cause the rubber block (58134) to push the scraper (54) upward, and the left box body (511) slides clockwise to cause the rubber block (58134) to release the scraper (54).

2. A conductive contact surface repairer for a tension drain plate of a power transmission line according to claim 1, characterized in that: A ball is rotatably embedded in the bottom end of the probe (56).

3. A conductive contact surface repairer for a tension drain plate of a power transmission line according to claim 2, characterized in that: The thread pattern on the surface of the screw rod (588) is divided into two parts, the upper thread pattern located in the end groove (589) has an inclination angle that is twice the inclination angle of the thread pattern located in the air chamber (586) on the lower side.

4. A conductive contact surface repairer for a tension drain plate of a power transmission line according to claim 3, characterized in that: The rubber block (58134) is configured as a wedge-shaped block structure that is thin at the top and thick at the bottom.

5. The method for using the conductive contact surface repairer of the tension drain plate of a power transmission line according to claim 4 comprises the following steps: S1, starting the motor (4) and the lead screw to drive the slide (3) to move back and forth along the guide rail (2), so that the slide (3) and the scraper (54) on the external box (51) scrape the plate surface of the guide plate body (1) to remove the scratches and grooves on the plate surface; S2, in the initial start-up stage of the motor (4), the external box (51) and the scraper (54) move from right to left. During this process, the probe (56) on the external box (51) first contacts the drainage plate body (1) and removes the debris on the plate surface during the movement. When encountering scratches or grooves, the spring (57) in the needle tube (55) pushes the probe (56) into the scratches or grooves to pick out the stones and debris embedded in the scratches or grooves; S3, the scraper (54) is kept in a constant position in the right wall groove (53) by negative pressure back suction. When the external box (51) and the probe (56) move from right to left and encounter scratches or grooves, the probe (56) extends into the bottom thereof. During this process, the button (585) on the surface of the probe (56) moves synchronously and pushes the slide beam (583) to move downward quantitatively. The nut sleeve (5810) on the slide beam (583) drives the screw rod (588) to rotate clockwise and drives the piston (587) to move upward, pressing the air in the air chamber (586) into the right wall groove (53) along the air storage hole (5811), so that the air volume in the right wall groove (53) increases and releases the scraper (54) downward by a certain distance; S4. When the external box (51) moves from right to left, the left box body (511) is slightly rotated counterclockwise by the reaction force of the board surface, so that the rubber block (58134) pushes the scraper (54) upward. At this time, the gap between the blade of the scraper (54) and the board surface increases. During this process, the air in the air chamber (586) is compressed in the air storage hole (5811). When the external box (51) returns to its original position and moves from left to right, the left box body (511) is slightly rotated clockwise by the reaction force of the board surface, so that the rubber block (58134) is separated from the contact with the scraper (54), and the scraper (54) is released. At this time, the air in the air storage hole (5811) is injected into the left wall groove (52), and the scraper (54) in the right wall groove (53) lowers its blade by controlling the amount of air in the groove.

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