A lightning protection detection device and method for transmission line

Abstract

The present invention discloses a lightning protection detection device and method for power transmission lines, which relates to the field of lightning protection detection technology and includes: a grounding seat; a placement frame, which is arranged on the top of the grounding seat and has a placement slot; and a micro-ohmmeter body. The present invention discloses a lightning protection detection device and method for power transmission lines. Before placing the probe of the down conductor test point, two semi-enclosing sleeves are placed at both ends of the test point, and the limiting slider is pulled to move the cooperating enclosure to form a fully enclosed structure, completing the fixation of the docking fastening mechanism. After the fixation is completed, the lifting handle is pulled to place the probe at the center of the test point so that the probe is located between the positioning pressure head and the test point. After the lifting handle is released, the reset of the positioning spring rod drives the positioning pressure head to position the probe, ensuring that the probe is tightly connected to the test point during use, avoiding the probe falling off and causing errors in the test results, and improving the accuracy of the lightning protection detection results.

Description

Technical Field

[0001] The present invention relates to the technical field of lightning protection detection, and in particular to a lightning protection detection device and method for a power transmission line. Background Art

[0002] Lightning is an extremely destructive natural phenomenon. Its voltage can reach millions of volts, and its instantaneous current can reach hundreds of thousands of amperes. In order to improve the safety of power transmission lines, lightning arresters need to be installed on them. During use, lightning arresters need to be inspected regularly.

[0003] In order to improve the accuracy of the resistance measurement value, the existing lightning protection detection device adopts a four-wire connection method when measuring the transition resistance between the lightning rod base and the down conductor. In the four-wire connection method, after the needle probe contacts the polished points of the lightning rod base and the polished points of the down conductor, the resistance detection result is often incorrect due to insufficient contact, which leads to inaccurate lightning protection detection results and reduces the use value of the lightning protection detection device. Summary of the Invention

[0004] The present invention discloses a lightning protection detection device for a power transmission line, which aims to solve the technical problem that, in order to improve the accuracy of the resistance measurement value, a four-wire connection method is adopted in the existing lightning protection detection device when performing transition resistance between a lightning rod base and a down conductor. In the four-wire connection method, after the needle probe contacts the grinding point of the lightning rod base and the grinding point of the down conductor, the resistance detection result is often erroneous due to insufficient contact, thereby causing the lightning protection detection result to be inaccurate.

[0005] In order to achieve the above object, the present invention adopts the following technical solutions:

[0006] A lightning protection detection device for a power transmission line, comprising:

[0007] Grounding socket;

[0008] The placement rack is arranged on the top of the grounding seat and has a placement slot;

[0009] The micro-ohmmeter body is arranged on the bottom inner wall of the placement groove, and the placement frame is located on the top of the placement groove and has deflection slots equidistantly opened;

[0010] Two storage slots are provided on the top of the rack near the placement slots;

[0011] Two sets of docking fastening mechanisms are placed in corresponding storage slots, and the docking fastening mechanisms are used to achieve a firm connection;

[0012] Four sets of wire clamping mechanisms are respectively arranged in four deflection slots;

[0013] The electrical box is installed in the installation slot provided on the placement rack;

[0014] An auxiliary mechanism is provided on the grounding seat;

[0015] The lifting mechanism is arranged at the bottom of the grounding seat.

[0016] In a preferred embodiment, the docking fastening mechanism includes:

[0017] Two half-enclosures;

[0018] Two matching enclosures are slidably connected to the corresponding semi-enclosing sleeves. The two semi-enclosing sleeves have limit sliding grooves on the opposite sides. The interiors of the two limit sliding grooves are slidably connected to limit sliders, and one end of the limit slider is fixedly connected to one side of the corresponding matching enclosure;

[0019] There are multiple extrusion sheets, each of which is fixedly connected to an extrusion spring rod at equal distances on the side facing the corresponding matching enclosure, one end of the extrusion spring rod is fixedly connected to the curved surface of the matching enclosure, and each extrusion sheet is fixedly connected to a guide round rod.

[0020] In a preferred solution, the docking fastening mechanism further includes:

[0021] Two docking rods are provided on opposite sides of the two semi-enclosing sleeves;

[0022] An operating frame is provided on the opposite side of the two docking rods, the top of the operating frame is fixedly connected to an upper fixing plate, and a through-hole is provided on the top of the upper fixing plate, and a lifting handle is inserted into the through-hole;

[0023] The positioning pressure head is set at the bottom of the lifting handle, and two positioning spring rods are symmetrically distributed on the top of the positioning pressure head. The top ends of the two positioning spring rods are fixedly connected to the bottom of the upper fixed plate;

[0024] Two lifting chutes are provided on the inner walls on both sides of the operating frame. The interiors of the two lifting chutes are slidably connected with lifting sliders, and the lifting sliders are fixedly connected to the outer side walls of the positioning pressure head.

[0025] In a preferred solution, two shaft blocks are fixedly connected to both sides of the positioning pressure head, and the opposite sides of the two shaft blocks on one side are connected to the same rotating shaft through bearings, the outer wall of the rotating shaft is fixedly connected to an expansion pressure plate, and connecting springs are fixedly connected at equal distances on the downward inclined surface of the expansion pressure plate, and one end of multiple connecting springs located on the same expansion pressure plate is fixedly connected to the same integration rod, and the integration rod is fixedly connected to one side of the positioning pressure head.

[0026] In a preferred embodiment, the wire clamping mechanism includes:

[0027] The positioning sleeve has two external blocks symmetrically distributed on its outer wall, and the two external blocks are fixedly connected to a deflection shaft, one end of the deflection shaft is connected to the inner wall of one side of the deflection slot through a bearing;

[0028] A plurality of clamping pieces, each of which is fixedly connected to a clamping spring rod at equal distances facing the inner wall of the positioning sleeve, and one end of the clamping spring rod is fixedly connected to the inner wall of the positioning sleeve;

[0029] Guide plates are provided on both sides of each clamping plate, and the overall cross-section of the two guide plates and one clamping plate is trapezoidal;

[0030] A mounting block is provided on the outer side wall of the positioning sleeve facing downward;

[0031] The telescopic connecting rod is arranged on one side of the mounting block, and one end of the telescopic connecting rod is fixedly connected with a clamping ring.

[0032] In a preferred embodiment, a same connecting wire is placed between multiple clamping pieces inside the same positioning sleeve, and the connecting wire passes through the clamping pieces, wherein one end of two connecting wires is provided with a clamp, and one end of the other two connecting wires is provided with a probe.

[0033] In a preferred embodiment, the auxiliary mechanism includes:

[0034] Two connecting shafts are connected to the shaft grooves opened on both sides of the grounding seat through bearings;

[0035] Two rotating rods are arranged on the outer side walls of the corresponding connecting shafts;

[0036] The lifting rod is arranged on the top of the two rotating rods, and an adjusting slot is opened on the lifting rod. The inside of the adjusting slot is slidably connected to two sliding blocks, and the tops of the two sliding blocks are fixedly connected to the pulling slide rod;

[0037] The soft pads are arranged on both sides of the middle portion of the lifting rod.

[0038] In a preferred embodiment, the auxiliary mechanism further comprises:

[0039] Two telescopic dust suction pipes are arranged at the bottom of the corresponding sliding blocks, and dust suction holes are opened on the outer side walls of the two telescopic dust suction pipes facing downwards;

[0040] The two pump racks are arranged on opposite sides of the two rotating rods. The interiors of the two pump racks are fixedly connected with dust suction pumps. The dust suction ends of the two dust suction pumps are fixedly connected with telescopic tubes, and one end of the telescopic tubes is inserted into the interior of the adjacent telescopic dust suction tubes.

[0041] In a preferred embodiment, the lifting mechanism includes:

[0042] Multiple base frames are arranged at the bottom of the grounding base near both sides. The bottom of the grounding base near each base frame is provided with a receiving groove. The inner walls of each receiving groove near both sides of the base frame are connected to a rotating shaft through bearings.

[0043] The lifting frame is arranged on the outer side wall of the rotating shaft, the bottom of the lifting frame close to the base frame is fixedly connected with an embedded tooth, and the bottom of the lifting frame away from the base frame is provided with a hand-grabbing groove;

[0044] The docking tooth groove is arranged on a side of the base frame facing the lifting frame, and the docking tooth groove is matched with the embedded teeth.

[0045] A method for detecting lightning protection of a power transmission line, using the above-mentioned lightning protection detection device for a power transmission line, comprises the following steps:

[0046] Step 1: Move the detection device to the lightning rod base and the down conductor test point, rotate the lifting frame out of the storage slot, so that the embedded teeth on the lifting frame are engaged with the docking tooth grooves, and the lifting frame and the base frame are docked, thereby completing the height lifting of the placement frame;

[0047] Step 2: Next, turn the lifting lever to the top, start the vacuum pump, and pull the telescopic vacuum tube to the longest distance. Then, manually pull the sliding rod to move the telescopic vacuum tube, and collect dust and small particles on the clamp and probe through the vacuum hole.

[0048] Step 3: After the preparation is completed, insert the connecting wires into the corresponding positions on the micro-ohmmeter body in sequence. First, clamp the two clamps at the test point of the lightning rod base and the test point of the down conductor, and then move the two probes to the test points;

[0049] Step 4: Before placing the probe at the down conductor test point, two semi-enclosing sleeves are placed at both ends of the test point. Pulling the limit slider will cooperate with the movement of the enclosure to form a fully enclosed structure, completing the fixation of the docking fastening mechanism. After the fixation is completed, pull the lifting handle and place the probe at the center of the test point so that the probe is located between the positioning pressure head and the test point. Release the lifting handle, and the positioning spring rod will reset and drive the positioning pressure head to position the probe. When fixing the probe at the lightning rod base test point, place the probe directly at the center of the test point, move the operating frame above the probe, and manually press the operating frame to make the positioning pressure head in close contact with the probe. At the same time, the expansion pressure plate deflects away from the positioning pressure head, and the connecting spring is stretched. The positioning pressure head cooperates with the two expansion pressure plates to realize three-point positioning of the probe. After the clamp and the probe are placed, the resistance measurement between the down conductor and the lightning rod is started.

[0050] From the above, it can be seen that the lightning protection detection device for power transmission lines provided by the present invention has the following features: before placing the down conductor test point probe, two semi-enclosing sleeves are placed at both ends of the test point, and the limiting slider is pulled to cooperate with the enclosure to move, thereby forming a fully enclosed structure, completing the fixation of the docking fastening mechanism, and after the fixation is completed, the lifting handle is pulled to place the probe at the center of the test point, so that the probe is located between the positioning pressure head and the test point, and the lifting handle is released, and the reset of the positioning spring rod drives the positioning pressure head to position the probe, ensuring that the probe is tightly connected to the test point during use, avoiding the probe falling off and causing errors in the test results, and improving the accuracy of the lightning protection detection results. Technical effect. BRIEF DESCRIPTION OF THE DRAWINGS

[0051] Figure 1 This is a schematic diagram of the overall structure of a transmission line lightning protection detection device proposed by the present invention.

[0052] Figure 2 for Figure 1 The main view of the overall structure.

[0053] Figure 3 This is a schematic diagram of the docking and fastening mechanism of a transmission line lightning protection detection device proposed by the present invention.

[0054] Figure 4 for Figure 3 Cross-sectional view of the combined structure of the middle docking rod, operating frame and semi-enclosing sleeve.

[0055] Figure 5 for Figure 4 Schematic diagram of the planar structure.

[0056] Figure 6 This is a schematic diagram of the combined structure of an operating frame, a positioning pressure head and an unfolding pressure plate of a transmission line lightning protection detection device proposed by the present invention.

[0057] Figure 7 This is a schematic diagram of the combined structure of the connecting wires and the wire clamping mechanism of a transmission line lightning protection detection device proposed by the present invention.

[0058] Figure 8 This is a schematic diagram of a wire clamping mechanism of a transmission line lightning protection detection device proposed by the present invention.

[0059] Figure 9 This is a schematic diagram of the combined structure of a grounding base and auxiliary mechanism of a transmission line lightning protection detection device proposed by the present invention.

[0060] Figure 10 This is a schematic diagram of the combined structure of a grounding base, auxiliary mechanism and lifting mechanism of a transmission line lightning protection detection device proposed by the present invention.

[0061] In the figure: 1. Placement rack; 2. Electric box; 3. Micro-ohmmeter body; 4. Auxiliary mechanism; 401. Lifting rod; 402. Cushion; 403. Rotating rod; 404. Connecting shaft; 405. Dust pump; 406. Pump rack; 407. Telescopic dust suction tube; 408. Pulling slide bar; 409. Sliding block; 410. Telescopic tube; 411. Dust suction hole; 5. Placement slot; 6. Wire clamping mechanism; 601. Positioning sleeve; 602. Deflection axis; 603. Telescopic connecting rod; 604. Clamping ring; 605. External block; 606. Clamping spring rod; 607. Guide plate; 608. Mounting block; 609. Clamping plate; 7. Connecting wire; 8. Clamp; 9. Probe; 10. Deflection slot; 11. Storage slot; 12. Docking fastening mechanism; 1201. Half package 1202, docking rod; 1203, lifting handle; 1204, upper fixed plate; 1205, operating frame; 1206, matching enclosure; 1207, limiting slide; 1208, limiting slider; 1209, unfolding pressure plate; 1210, positioning pressure head; 1211, extrusion sheet; 1212, extrusion spring rod; 1213, guide round rod; 1214, lifting slide; 1215, lifting slider; 1216, positioning spring rod; 1217, rotating shaft; 1218, connecting spring; 1219, integrating rod; 1220, shaft block; 13, grounding seat; 14, lifting mechanism; 1401, base frame; 1402, lifting frame; 1403, hand grip groove; 1404, docking tooth groove; 1405, embedded tooth; 1406, rotating shaft. DETAILED DESCRIPTION

[0062] The technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all the embodiments.

[0063] A transmission line lightning protection detection device disclosed in the present invention is mainly used in existing lightning protection detection devices. When performing transition resistance between a lightning rod base and a down conductor, in order to improve the accuracy of resistance measurement values, a four-wire connection method is adopted. In the four-wire connection method, after the needle probe contacts the polished points of the lightning rod base and the polished points of the down conductor, insufficient contact often leads to errors in resistance detection results, thereby causing inaccurate lightning protection detection results.

[0064] Reference Figures 1-10 , a transmission line lightning protection detection device, comprising:

[0065] Grounding socket 13;

[0066] The placement rack 1 is arranged on the top of the grounding base 13 and has a placement slot 5;

[0067] The micro-ohmmeter body 3 is arranged on the bottom inner wall of the placement groove 5, and the placement frame 1 is located at the top of the placement groove 5 and has deflection slots 10 equidistantly opened;

[0068] Two storage slots 11 are provided on the top of the placement rack 1 near the placement slot 5;

[0069] Two sets of docking fastening mechanisms 12 are placed in corresponding storage slots 11, and the docking fastening mechanisms 12 are used to achieve a firm connection;

[0070] Four sets of wire clamping mechanisms 6 are respectively arranged in four deflection slots 10;

[0071] The electrical box 2 is installed in the installation slot provided on the placement rack 1;

[0072] Auxiliary mechanism 4, provided on the grounding seat 13;

[0073] The lifting mechanism 14 is disposed at the bottom of the grounding seat 13 .

[0074] Reference Figures 1-6 In a preferred embodiment, the docking fastening mechanism 12 includes:

[0075] Two semi-enclosing sleeves 1201;

[0076] Two matching panels 1206 are slidably connected to the corresponding semi-enclosing sleeves 1201. The two semi-enclosing sleeves 1201 have limit sliding grooves 1207 on the facing sides. The interiors of the two limit sliding grooves 1207 are slidably connected to limit sliders 1208. One end of the limit slider 1208 is fixedly connected to one side of the corresponding matching panel 1206.

[0077] There are multiple extrusion sheets 1211, and each extrusion sheet 1211 is fixedly connected to an extrusion spring rod 1212 at equal distances on the side facing the corresponding matching enclosure 1206. One end of the extrusion spring rod 1212 is fixedly connected to the curved surface of the matching enclosure 1206, and each extrusion sheet 1211 is fixedly connected to a guide round rod 1213.

[0078] In a specific application scenario, before placing the probe 9 at the down conductor test point, the two semi-enclosing sleeves 1201 are placed at both ends of the test point, and the limiting slider 1208 is pulled to cooperate with the enclosure 1206 to move, thereby forming a fully enclosed structure, completing the fixation of the docking fastening mechanism 12. After the fixation is completed, the lifting handle 1203 is pulled to place the probe 9 at the center position of the test point, so that the probe 9 is located between the positioning pressure head 1210 and the test point, and the lifting handle 1203 is released. The reset of the positioning spring rod 1216 drives the positioning pressure head 1210 to position the probe 9, ensuring that the probe 9 is tightly connected to the test point during use, avoiding the probe 9 falling off and causing errors in the test results, thereby improving the accuracy of the lightning protection detection results. At the same time, after the positioning pressure head 1210 contacts the probe 9, the two unfolded pressure plates 1209 of the positioning pressure head 1210 simultaneously position and squeeze the probe 9, further improving the tightness of the contact between the probe 9 and the test point.

[0079] Specifically, when fixing the probe 9 at the test point of the lightning rod base, place the probe 9 directly at the center of the test point, move the operating frame 1205 above the probe 9, and manually press the operating frame 1205 so that the positioning pressure head 1210 is in close contact with the probe 9. At the same time, the unfolding pressure plate 1209 is deflected in the direction away from the positioning pressure head 1210, and the connecting spring 1218 is stretched. The positioning pressure head 1210 cooperates with the two unfolding pressure plates 1209 to realize three-point positioning of the probe 9, thereby improving the stability of the probe 9 during use. The position of the down conductor is complex and needs to be surrounded and fixed, and the base position is flat and can be directly positioned at three points.

[0080] It should be noted that when the matching enclosure 1206 slides out of the semi-enclosing sleeve 1201, the extrusion spring rod 1212 drives the extrusion sheet 1211 to make close contact with the periphery of the down conductor test point, thereby improving the firmness of the connection between the semi-enclosing sleeve 1201, the matching enclosure 1206 and the down conductor.

[0081] Reference Figure 4-Figure 6 In a preferred embodiment, the docking fastening mechanism 12 further includes:

[0082] Two docking rods 1202 are provided on opposite sides of the two semi-enclosing sleeves 1201;

[0083] The operating frame 1205 is provided on the opposite side of the two docking rods 1202. The top of the operating frame 1205 is fixedly connected to the upper fixing plate 1204. The top of the upper fixing plate 1204 is provided with a through hole, and the lifting handle 1203 is inserted into the through hole.

[0084] The positioning pressure head 1210 is provided at the bottom of the lifting handle 1203, and two positioning spring rods 1216 are symmetrically distributed on the top of the positioning pressure head 1210. The top ends of the two positioning spring rods 1216 are fixedly connected to the bottom of the upper fixing plate 1204;

[0085] Two lifting slots 1214 are provided on the inner walls on both sides of the operating frame 1205 . The interiors of the two lifting slots 1214 are slidably connected to lifting sliders 1215 , and the lifting sliders 1215 are fixedly connected to the outer wall of the positioning pressure head 1210 .

[0086] Reference Figure 6 In a preferred embodiment, two shaft blocks 1220 are fixedly connected to both sides of the positioning pressure head 1210, and the opposite sides of the two shaft blocks 1220 on one side are connected to the same rotating shaft 1217 through bearings, and the outer wall of the rotating shaft 1217 is fixedly connected to the expansion pressure plate 1209, and the connecting springs 1218 are fixedly connected at equal distances on the downward inclined surface of the expansion pressure plate 1209, and one end of the multiple connecting springs 1218 located on the same expansion pressure plate 1209 is fixedly connected to the same integration rod 1219, and the integration rod 1219 is fixedly connected to one side of the positioning pressure head 1210.

[0087] Reference Figure 1 、 Figure 2 、 Figure 7 and Figure 8 In a preferred embodiment, the wire clamping mechanism 6 includes:

[0088] The positioning sleeve 601 has two external blocks 605 symmetrically distributed on its outer wall, and the two external blocks 605 are fixedly connected to the deflection shaft 602, one end of the deflection shaft 602 is connected to the inner wall of one side of the deflection slot hole 10 through a bearing;

[0089] Multiple clamping pieces 609, each clamping piece 609 is fixedly connected to a clamping spring rod 606 at equal distances facing the inner wall of the positioning sleeve 601, and one end of the clamping spring rod 606 is fixedly connected to the inner wall of the positioning sleeve 601;

[0090] Guide plates 607 are provided on both sides of each clamping plate 609 , and the overall cross-section of the two guide plates 607 and one clamping plate 609 is a trapezoid;

[0091] The mounting block 608 is provided on the outer side wall of the positioning sleeve 601 facing downward;

[0092] The telescopic connecting rod 603 is provided on one side of the mounting block 608 , and one end of the telescopic connecting rod 603 is fixedly connected to the clamping ring 604 .

[0093] Specifically, during the use of the clamp 8 and the probe 9, the clamping spring rod 606 drives the clamping piece 609 to clamp the connecting wire 7, and then the telescopic link 603 is adjusted according to the pulling distance of the connecting wire 7, and the outer periphery of the connection between the connecting wire 7 and the clamp 8 is clamped by the clamping ring 604. At the same time, the positioning sleeve 601 is deflected according to the use angle of the clamp 8 to ensure that the connecting wire 7 behind the clamp 8 and the probe 9 will not shake during the operation, thereby further improving the stability of the clamp 8 and the probe 9 during operation.

[0094] Reference Figure 7 and Figure 8 In a preferred embodiment, the same connecting wire 7 is placed between multiple clamping pieces 609 located inside the same positioning sleeve 601, and the connecting wire 7 passes through the clamping pieces 609, wherein one end of two connecting wires 7 is provided with a clamp 8, and one end of the other two connecting wires 7 is provided with a probe 9.

[0095] Reference Figure 1 、 Figure 2 、 Figure 9 and Figure 10 In a preferred embodiment, the auxiliary mechanism 4 includes:

[0096] Two connecting shafts 404 are connected to the shaft grooves opened on both sides of the grounding seat 13 through bearings;

[0097] Two rotating rods 403 are provided on the outer side walls of the corresponding connecting shafts 404;

[0098] The lifting rod 401 is provided at the top of the two rotating rods 403 and has an adjustment slot. Two sliding blocks 409 are slidably connected to the inside of the adjustment slot. The tops of the two sliding blocks 409 are fixedly connected to the pulling slide rod 408.

[0099] The soft pads 402 are provided on both sides of the lifting rod 401 in the middle.

[0100] It should be noted that before conducting a lightning protection test, the lifting rod 401 is rotated to the top, the vacuum pump 405 is started, and the telescopic vacuum tube 407 is pulled to the longest distance. The sliding rod 408 is then manually pulled to move the telescopic vacuum tube 407, and the dust and small particles on the clamp 8 and probe 9 are collected through the vacuum hole 411. The presence of dust affects the test results.

[0101] Reference Figure 9 and Figure 10 In a preferred embodiment, the auxiliary mechanism 4 further includes:

[0102] Two telescopic dust suction tubes 407 are provided at the bottom of the corresponding sliding block 409, and dust suction holes 411 are opened on the outer side walls of the two telescopic dust suction tubes 407 facing downward;

[0103] The two pump racks 406 are arranged on the opposite sides of the two rotating rods 403. The interiors of the two pump racks 406 are fixedly connected with dust suction pumps 405. The dust suction ends of the two dust suction pumps 405 are fixedly connected with telescopic tubes 410. One end of the telescopic tube 410 is inserted into the interior of the adjacent telescopic dust suction tube 407.

[0104] Reference Figure 1 、 Figure 2 and Figure 10 In a preferred embodiment, the lifting mechanism 14 includes:

[0105] Multiple base frames 1401 are disposed on the bottom of the grounding base 13 near both sides. The bottom of the grounding base 13 near each base frame 1401 has a receiving slot. The inner walls of each receiving slot near both sides of the base frame 1401 are connected to a rotating shaft 1406 through a bearing.

[0106] The lifting frame 1402 is arranged on the outer wall of the rotating shaft 1406. The bottom of the lifting frame 1402 close to the bottom of the base frame 1401 is fixedly connected with an embedded tooth 1405. The bottom of the lifting frame 1402 away from the base frame 1401 is provided with a hand grip groove 1403;

[0107] The docking tooth groove 1404 is provided on a side of the base frame 1401 facing the lifting frame 1402 , and the docking tooth groove 1404 is adapted to the embedded tooth 1405 .

[0108] Specifically, when using the detection device, if it is necessary to lift the position of the placement rack 1, the lifting rack 1402 is rotated out of the storage slot so that the embedded teeth 1405 on the lifting rack 1402 are inserted into the docking tooth groove 1404, thereby achieving the docking of the lifting rack 1402 and the base frame 1401, thereby completing the height lifting of the placement rack 1.

[0109] A method for detecting lightning protection of a power transmission line, using the above-mentioned lightning protection detection device for a power transmission line, comprises the following steps:

[0110] Step 1: Move the detection device to the lightning rod base and the down conductor test point, rotate the lifting frame 1402 out of the storage slot, so that the embedded teeth 1405 on the lifting frame 1402 are engaged with the docking tooth groove 1404, and the lifting frame 1402 and the base frame 1401 are docked, thereby completing the height lifting of the placement rack 1;

[0111] Step 2: Next, rotate the lifting rod 401 to the uppermost position, start the vacuum pump 405, and extend the telescopic vacuum tube 407 to its maximum length. Then, manually pull the sliding rod 408 to move the telescopic vacuum tube 407, and collect dust and small particles on the clamp 8 and probe 9 through the vacuum hole 411.

[0112] Step 3: After the preparation is completed, insert the connecting wires 7 into the corresponding positions on the micro-ohmmeter body 3 in sequence. First, clamp the two clamps 8 at the test point of the lightning rod base and the test point of the down conductor. Then, move the two probes 9 to the test points.

[0113] Step 4: Before placing the probe 9 at the down conductor test point, two semi-enclosing sleeves 1201 are placed at both ends of the test point, and the limiting slider 1208 is pulled to move the cooperating enclosure 1206 to form a fully enclosed structure, completing the fixation of the docking fastening mechanism 12. After the fixation is completed, the lifting handle 1203 is pulled to place the probe 9 at the center of the test point so that the probe 9 is located between the positioning pressure head 1210 and the test point. The lifting handle 1203 is released, and the reset of the positioning spring rod 1216 drives the positioning pressure head 1210 to position the probe 9. When the probe 9 of the test point of the lightning rod base is fixed, the probe 9 is placed directly at the center of the test point, the operation frame 1205 is moved above the probe 9, and the operation frame 1205 is manually pressed to make the positioning pressure head 1210 in close contact with the probe 9. At the same time, the unfolding pressure plate 1209 is deflected in the direction away from the positioning pressure head 1210, and the connecting spring 1218 is stretched. The positioning pressure head 1210 cooperates with the two unfolding pressure plates 1209 to realize the three-point positioning of the probe 9. After the clamp 8 and the probe 9 are placed, the resistance measurement between the down conductor and the lightning rod is started.

[0114] The above description is only a preferred specific embodiment of the present invention, but the scope of protection of the present invention is not limited thereto. Any technician familiar with the technical field, within the technical scope disclosed by the present invention, who makes equivalent replacements or changes based on the technical solution and inventive concept of the present invention, should be covered by the scope of protection of the present invention.

Claims

1. A lightning protection detection device for a power transmission line, characterized in that: include: Grounding socket; The placement rack is arranged on the top of the grounding seat and has a placement slot; The micro-ohmmeter body is arranged on the bottom inner wall of the placement groove, and the placement frame is located on the top of the placement groove and has deflection slots equidistantly opened; Two storage slots are provided on the top of the rack near the placement slots; Two sets of docking fastening mechanisms are placed in corresponding storage slots, and the docking fastening mechanisms are used to achieve a firm connection; Four sets of wire clamping mechanisms are respectively arranged in four deflection slots; The electrical box is installed in the installation slot provided on the placement rack; An auxiliary mechanism is provided on the grounding seat; A lifting mechanism is arranged at the bottom of the grounding seat; The docking fastening mechanism comprises: Two half-enclosures; Two matching enclosures are slidably connected to the corresponding semi-enclosing sleeves. The two semi-enclosing sleeves have limit sliding grooves on the opposite sides. The interiors of the two limit sliding grooves are slidably connected to limit sliders, and one end of the limit slider is fixedly connected to one side of the corresponding matching enclosure; Multiple extrusion sheets, each of which is fixedly connected to an extrusion spring rod at equal distances on one side of the extrusion sheet facing the corresponding mating enclosure, one end of the extrusion spring rod is fixedly connected to the curved surface of the mating enclosure, and each extrusion sheet is fixedly connected to a guide rod; The docking fastening mechanism also includes: Two docking rods are provided on opposite sides of the two semi-enclosing sleeves; An operating frame is provided on the opposite side of the two docking rods, the top of the operating frame is fixedly connected to an upper fixing plate, and a through-hole is provided on the top of the upper fixing plate, and a lifting handle is inserted into the through-hole; The positioning pressure head is set at the bottom of the lifting handle, and two positioning spring rods are symmetrically distributed on the top of the positioning pressure head. The top ends of the two positioning spring rods are fixedly connected to the bottom of the upper fixed plate; Two lifting chutes are provided on the inner walls on both sides of the operating frame. The interiors of the two lifting chutes are slidably connected with lifting sliders, and the lifting sliders are fixedly connected to the outer side walls of the positioning pressure head.

2. A transmission line lightning protection detection device according to claim 1, characterized in that: Two shaft blocks are fixedly connected to both sides of the positioning pressure head, and the opposite sides of the two shaft blocks on one side are connected to the same rotating shaft through bearings, the outer side wall of the rotating shaft is fixedly connected to an expansion pressure plate, and connecting springs are fixedly connected at equal distances on the downward inclined surface of the expansion pressure plate, one end of multiple connecting springs located on the same expansion pressure plate is fixedly connected to the same integration rod, and the integration rod is fixedly connected to one side of the positioning pressure head.

3. A transmission line lightning protection detection device according to claim 2, characterized in that: The wire clamping mechanism comprises: The positioning sleeve has two external blocks symmetrically distributed on its outer wall, and the two external blocks are fixedly connected to a deflection shaft, one end of the deflection shaft is connected to the inner wall of one side of the deflection slot through a bearing; A plurality of clamping pieces, each of which is fixedly connected to a clamping spring rod at equal distances facing the inner wall of the positioning sleeve, and one end of the clamping spring rod is fixedly connected to the inner wall of the positioning sleeve; Guide plates are provided on both sides of each clamping plate, and the overall cross-section of the two guide plates and one clamping plate is trapezoidal; A mounting block is provided on the outer side wall of the positioning sleeve facing downward; The telescopic connecting rod is arranged on one side of the mounting block, and one end of the telescopic connecting rod is fixedly connected with a clamping ring.

4. A transmission line lightning protection detection device according to claim 3, characterized in that: A same connecting wire is placed between the multiple clamping pieces inside the same positioning sleeve, and the connecting wire passes through the clamping pieces. One end of two connecting wires is provided with clamps, and one end of the other two connecting wires is provided with probes.

5. A transmission line lightning protection detection device according to claim 4, characterized in that: The auxiliary mechanism includes: Two connecting shafts are connected to the shaft grooves opened on both sides of the grounding seat through bearings; Two rotating rods are arranged on the outer side walls of the corresponding connecting shafts; The lifting rod is arranged on the top of the two rotating rods, and an adjusting slot is opened on the lifting rod. The inside of the adjusting slot is slidably connected to two sliding blocks, and the tops of the two sliding blocks are fixedly connected to the pulling slide rod; The soft pads are arranged on both sides of the middle portion of the lifting rod.

6. A transmission line lightning protection detection device according to claim 5, characterized in that: The auxiliary mechanism also includes: Two telescopic dust suction pipes are arranged at the bottom of the corresponding sliding blocks, and dust suction holes are opened on the outer side walls of the two telescopic dust suction pipes facing downwards; The two pump racks are arranged on opposite sides of the two rotating rods. The interiors of the two pump racks are fixedly connected with dust suction pumps. The dust suction ends of the two dust suction pumps are fixedly connected with telescopic tubes, and one end of the telescopic tubes is inserted into the interior of the adjacent telescopic dust suction tubes.

7. A power transmission line lightning protection detection device according to claim 6, characterized in that: The lifting mechanism comprises: Multiple base frames are arranged at the bottom of the grounding base near both sides. The bottom of the grounding base near each base frame is provided with a receiving groove. The inner walls of each receiving groove near both sides of the base frame are connected to a rotating shaft through bearings. The lifting frame is arranged on the outer side wall of the rotating shaft, the bottom of the lifting frame close to the base frame is fixedly connected with an embedded tooth, and the bottom of the lifting frame away from the base frame is provided with a hand-grabbing groove; The docking tooth groove is arranged on a side of the base frame facing the lifting frame, and the docking tooth groove is matched with the embedded teeth.

8. A method for detecting lightning protection of a power transmission line, using the device for detecting lightning protection of a power transmission line according to claim 7, characterized in that: The following steps are involved: Step 1: Move the detection device to the lightning rod base and the down conductor test point, rotate the lifting frame out of the storage slot, so that the embedded teeth on the lifting frame are engaged with the docking tooth grooves, and the lifting frame and the base frame are docked, thereby completing the height lifting of the placement frame; Step 2: Next, turn the lifting lever to the top, start the vacuum pump, and pull the telescopic vacuum tube to the longest distance. Then, manually pull the sliding rod to move the telescopic vacuum tube, and collect dust and small particles on the clamp and probe through the vacuum hole. Step 3: After the preparation is completed, insert the connecting wires into the corresponding positions on the micro-ohmmeter body in sequence. First, clamp the two clamps at the test point of the lightning rod base and the test point of the down conductor, and then move the two probes to the test points; Step 4: Before placing the probe at the down conductor test point, two semi-enclosing sleeves are placed at both ends of the test point. Pulling the limit slider will cooperate with the movement of the enclosure to form a fully enclosed structure, completing the fixation of the docking fastening mechanism. After the fixation is completed, pull the lifting handle and place the probe at the center of the test point so that the probe is located between the positioning pressure head and the test point. Release the lifting handle, and the positioning spring rod will reset and drive the positioning pressure head to position the probe. When fixing the probe at the lightning rod base test point, place the probe directly at the center of the test point, move the operating frame above the probe, and manually press the operating frame to make the positioning pressure head in close contact with the probe. At the same time, the expansion pressure plate deflects away from the positioning pressure head, and the connecting spring is stretched. The positioning pressure head cooperates with the two expansion pressure plates to realize three-point positioning of the probe. After the clamp and the probe are placed, the resistance measurement between the down conductor and the lightning rod is started.

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