Portable lightning arrester insulation resistance in-situ testing device and testing method

Abstract

The invention provides a portable lightning arrester insulation resistance in-situ testing device, which comprises a clamping rod and a measuring piece, and is characterized in that the clamping rod comprises a positive electrode conductive clamping piece, a negative electrode conductive clamping piece and an insulating base rod, and the positive electrode conductive clamping piece and the negative electrode conductive clamping piece are arranged on the insulating base rod and can slide on the insulating base rod; the positive electrode conductive clamping piece and the negative electrode conductive clamping piece are used for clamping two end parts of the lightning arrester respectively; the measuring piece comprises a positive electrode clamp conductive connecting piece and a negative electrode clamp conductive connecting piece, the positive electrode clamp conductive connecting piece is installed on the positive electrode conductive clamping piece, the negative electrode clamp conductive connecting piece is installed on the negative electrode conductive clamping piece, and the positive electrode clamp conductive connecting piece is connected with a measuring line. And the negative electrode clamp conductive connecting piece is connected with a first grounding wire. According to the invention, the tedious steps of dismounting the lightning arrester in a power-off manner in a traditional method are avoided, and the detection efficiency and the safety are improved.

Description

Technical Field

[0001] The invention relates to the technical field of power grid equipment, and in particular to a portable on-site testing device and method for insulation resistance of a lightning arrester. Background Art

[0002] In modern power systems, lightning arresters are crucial to power grid safety.

[0003] At present, the traditional detection method is that after the power outage, the line lightning arrester is removed by manpower, transported to a professional testing site, and an insulation resistance meter is connected to the high-voltage and low-voltage ends of the lightning arrester using ordinary resistance test wires to perform insulation resistance testing. This method has the problems of low efficiency in lightning arrester removal, long interference time for power grid operation, limited data and insufficient accuracy. Summary of the invention

[0004] The purpose of the present invention is to provide a portable on-site testing device for the insulation resistance of a lightning arrester in view of the defects of the prior art, comprising:

[0005] A clamping rod and a measuring piece, wherein the clamping rod comprises a positive conductive clamping piece, a negative conductive clamping piece and an insulating base rod, wherein the positive conductive clamping piece and the negative conductive clamping piece are arranged on the insulating base rod and can slide on the insulating base rod; the positive conductive clamping piece and the negative conductive clamping piece are used to clamp two ends of the arrester respectively;

[0006] The measuring part includes a positive electrode clamp conductive connector and a negative electrode clamp conductive connector, the positive electrode clamp conductive connector is installed on the positive electrode conductive clamp, and the negative electrode clamp conductive connector is installed on the negative electrode conductive clamp, the positive electrode clamp conductive connector is connected to a measuring line, and the negative electrode clamp conductive connector is connected to a first grounding line, the measuring line is used to be connected to the high voltage end of the insulation resistance measuring device, and the first grounding line is connected to the grounding end of the insulation resistance measuring device.

[0007] Furthermore, it also includes: a tubular handle, a first rope and a rotation connection part, wherein the rotation connection part rotationally connects the front end of the tubular handle and the clamping rod;

[0008] The rotating connection part includes a handle connection seat, a clamping rod connection seat, a bearing seat, a bearing and a rotating shaft. The handle connection seat is fixedly connected to the front end of the tubular handle. The handle connection seat has a groove, and the bottom of the handle connection seat below the groove has a first hole connected to the groove. The bearing seat is fixed in the groove, and the bearing is installed in the bearing seat. The middle of the bearing seat has a second hole. The top end of the rotating shaft passes through the first hole, the second hole and the inner ring of the bearing in sequence and is fixedly connected to the bottom surface of the clamping rod connection seat. The rotating shaft is connected to the bearing seat through the bearing, and the top surface of the clamping rod connection seat is fixedly connected to the insulating base rod.

[0009] A rotating shaft disk is fixed to the bottom end of the rotating shaft, one end of the first rope passes through the front end of the tubular handle and is fixedly connected to the rotating shaft disk at the bottom end of the rotating shaft, the other end of the first rope passes through the rear end of the tubular handle and is fixed on the rotating handle, the rotating handle is sleeved on the rear end of the tubular handle and can rotate on the tubular handle, and the first rope is driven to rotate by the rotating handle to adjust the rotation position of the rotating shaft.

[0010] Furthermore, the clamping rod also includes: a first sliding tube and a second sliding tube. A plurality of fixed seats are provided on the insulating base rod along the length direction of the insulating base rod. The two ends of the first sliding tube are respectively installed on the corresponding two fixed seats, and the two ends of the second sliding tube are respectively installed on the corresponding two fixed seats. The positive conductive clamping member is slidably installed on the first sliding tube, and the negative conductive clamping member is slidably installed on the second sliding tube.

[0011] Further, the positive electrode conductive clamping member includes a positive electrode U-shaped buckle, a first fixed buckle and a first slide seat, the first fixed buckle is slidably mounted on the first slide tube, the positive electrode U-shaped buckle is fixedly connected to the first fixed buckle, the bottom end of the first fixed buckle is fixedly connected to the first slide seat, the first slide seat is slidably connected to the insulating base rod, and the first fixed buckle and the first slide seat jointly limit the positive electrode conductive clamping member to slide in the length direction of the insulating base rod;

[0012] The negative electrode conductive clamp includes a negative electrode U-shaped buckle, a second fixed buckle and a second slide seat, the second fixed buckle is slidably installed on the second slide tube, the negative electrode U-shaped buckle is fixed to the second fixed buckle, the bottom end of the second fixed buckle is fixedly connected to the second slide seat, the second slide seat is slidably connected to the insulating base rod, and the second fixed buckle and the second slide seat jointly limit the negative electrode conductive clamp to slide in the length direction of the insulating base rod.

[0013] Furthermore, it also includes: a second rope, a first rope hole is opened on the insulating base rod, a first long slit is opened on the first slide tube along the length direction of the first slide tube, one end of the second rope passes through the first rope hole and then penetrates into the first slide tube and extends out from the first long slit to be fixed on the first fixing buckle;

[0014] A first spring is sleeved on the first sliding tube, and the first spring is located between the first fixing buckle and a fixing seat on the first sliding tube close to the first rope hole.

[0015] Furthermore, it also includes: a third rope, a second rope hole is opened on the insulating base rod, a second long slit is opened on the second slide tube along the length direction of the second slide tube, one end of the third rope passes through the second rope hole and then penetrates into the second slide tube and extends out from the second long slit to be fixed to the second fixing buckle, and the positive conductive clamp and the negative conductive clamp are driven to slide by pulling the other ends of the second rope and the third rope respectively, so as to adjust the distance between the positive conductive clamp and the negative conductive clamp;

[0016] A second spring is sleeved on the second slide tube, and the second spring is located between the second fixing buckle and a fixing seat on the second slide tube close to the second rope hole.

[0017] Furthermore, the positive electrode U-shaped buckle further includes two first spring sheets arranged opposite to each other, and the positive electrode clamp conductive connector is simultaneously connected to the two first spring sheets arranged opposite to each other;

[0018] The negative electrode U-shaped buckle also includes two second elastic sheets arranged opposite to each other, and the negative electrode clamp conductive connector is simultaneously connected to the two second elastic sheets arranged opposite to each other.

[0019] Furthermore, it also includes: a shielding cover, the shielding cover is fixedly connected to the insulating base rod, the shielding cover covers all or part of the lightning arrester, and the shielding cover also includes:

[0020] A first base and a second base, wherein the first base has a first fan-shaped slide rail, the second base has a second fan-shaped slide rail, and the first base and the second base are respectively fixed to two ends of the insulating base rod;

[0021] Umbrella ribs, with two ends of the plurality of ribs being slidably mounted on the first fan-shaped slide rail and the second fan-shaped slide rail respectively;

[0022] A shielding net, wherein the shielding net is installed on a plurality of umbrella ribs;

[0023] A second grounding wire, wherein the second grounding wire is connected to the shielding net.

[0024] Furthermore, the inner layer of the measuring line is a conductive wire, the outer layer of the measuring line is a shielding wire that wraps the conductive wire, and one end of the shielding wire is connected to a shielding end of the insulation resistance measuring device.

[0025] A testing method based on a portable lightning arrester insulation resistance on-site testing device comprises the following steps:

[0026] Connecting the measuring wire to the high voltage terminal of the insulation resistance measuring device, and connecting the first grounding wire to the grounding terminal of the insulation resistance measuring device;

[0027] According to the position of the lightning arrester, the rotating handle is rotated to drive the first rope to rotate, thereby adjusting the rotation position of the rotating shaft, the rotating shaft drives the clamping rod connecting seat to rotate, and the holding rod connecting seat drives the insulating base rod to rotate. The rotation position of the positive conductive clamping piece and the negative conductive clamping piece is adjusted by rotating the insulating base rod until they are aligned with the lightning arrester. According to the spacing between the high-voltage end and the low-voltage end of the lightning arrester, the positive conductive clamping piece and the negative conductive clamping piece are driven to slide on the insulating base rod by pulling the second rope and the third rope respectively, thereby adjusting the spacing between the positive conductive clamping piece and the negative conductive clamping piece until they match the spacing between the two ends of the lightning arrester, clamping the high-voltage end of the lightning arrester with the positive conductive clamping piece, and clamping the low-voltage end of the lightning arrester with the negative conductive clamping piece;

[0028] The insulation resistance measuring device supplies power to the arrester through the measuring line. The arrester is connected to the grounding terminal of the insulation resistance measuring device through the first grounding line to form a loop. The insulation resistance measuring device measures the voltage and current of the loop and calculates the resistance of the arrester through the voltage and current.

[0029] The beneficial effects of the present invention are:

[0030] 1. The present invention provides a portable device for detecting the performance of a lightning arrester without approaching the lightning arrester or removing the lightning arrester, thereby avoiding the cumbersome steps of power outage and disassembly of the lightning arrester in the traditional method, and greatly improving the detection efficiency and safety.

[0031] 2. The first spring clip and the second spring clip use their own restoring force to press against the arrester, while increasing the contact area with the end of the arrester to eliminate contact resistance errors.

[0032] 3. The induced current is then directed to the ground through the shielded wire and shielding cover, thereby protecting the signal inside the cable from interference.

[0033] 4. Through the cooperation of the first rope and the rotating connecting part, the angle of the clamping rod can be conveniently adjusted. At the same time, the adjustment of the distance between the positive electrode supporting part and the negative electrode supporting part can adapt to the application requirements of different application scenarios. BRIEF DESCRIPTION OF THE DRAWINGS

[0034] Figure 1 This is a schematic diagram of the structure of a portable on-site lightning arrester insulation resistance test device;

[0035] Figure 2 This is a schematic diagram of the clamping rod structure of a portable lightning arrester insulation resistance on-site test device;

[0036] Figure 3 This is a schematic diagram of the turntable structure of a portable lightning arrester insulation resistance on-site test device;

[0037] Figure 4 It is a schematic diagram of the first rope structure of the portable lightning arrester insulation resistance on-site test device;

[0038] Figure 5 It is a schematic diagram of the structure of the connection between the first rope and the turntable of the portable lightning arrester insulation resistance on-site test device;

[0039] Figure 6 The schematic diagram of the structure of the shielding cover of the portable lightning arrester insulation resistance on-site testing device is shown in FIG.

[0040] Figure numerals: 1-handle; 2-first rope; 21-fiber bundle; 3-turntable; 31-pin; 4-clamping rod; 41-positive conductive clamping piece; 411-positive U-shaped buckle; 4111-first spring piece; 412-first fixing buckle; 413-first slide seat; 42-negative conductive clamping piece; 421-negative U-shaped buckle; 4211-second spring piece; 422-second fixing buckle; 423-second slide seat; 43-insulating base rod; 431-fixing seat; 432-first rope hole; 433-second rope hole; 44- The first slide tube; 441-the first long slit; 45-the second slide tube; 451-the second long slit; 46-the first spring; 47-the second spring; 5-the measuring piece; 51-the positive electrode clamp conductive connector; 52-the negative electrode clamp conductive connector; 53-the measuring line; 54-the first grounding line; 6-the shielding cover; 61-the first base; 611-the first fan-shaped slide rail; 62-the second base; 621-the second fan-shaped slide rail; 63-the ribs; 64-the shielding net; 65-the second grounding line; 7-the rotating handle; 8-the second rope; 9-the third rope. DETAILED DESCRIPTION

[0041] In order to make the technical problems, technical solutions and beneficial effects to be solved by the present application more clearly understood, the present application is further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present application and are not used to limit the present application.

[0042] Example 1

[0043] refer to Figure 1-6 , a portable on-site lightning arrester insulation resistance test device, comprising:

[0044] The tubular handle 1, the first rope 2 and the rotating connection part 3, the rotating connection part 3 rotatably connects the front end of the tubular handle 1 and the clamping rod 4.

[0045] The rotating connection part 3 includes a handle connection seat 31, a clamping rod connection seat 32, a bearing seat 33, a bearing 34 and a rotating shaft 36. The handle connection seat 31 is fixedly connected to the front end of the tubular handle 1. The handle connection seat 31 has a groove 311, and the bottom of the handle connection seat 31 below the groove 311 has a first hole 3111 connected to the groove 311. The bearing seat 33 is fixed in the groove 311. The bearing 34 is installed on the bearing seat 33 and the outer ring of the bearing 34 is connected to the bearing seat 33 by a key. The middle of the bearing seat 33 has a second hole 331. The top end of the rotating shaft 36 passes through the first hole 3111, the second hole 331 and the axial hole of the inner ring of the bearing 34 in sequence and is fixedly connected to the bottom surface of the clamping rod connection seat 32. The outer wall of the rotating shaft 36 is connected to the inner ring of the bearing 34 by a key. The top surface of the clamping rod connection seat 32 is fixedly connected to the insulating base rod 43.

[0046] A rotating shaft disk 361 is fixed to the bottom end of the rotating shaft 36, one end of the first rope 2 passes through the front end of the tubular handle 1 and is fixedly connected to the rotating shaft disk 361 at the bottom end of the rotating shaft 36, and the other end of the first rope 2 passes through the rear end of the tubular handle 1 and is fixed on the rotating handle 7. The rotating handle 7 is sleeved on the rear end of the tubular handle 1 and can rotate on the tubular handle 1. The first rope 2 is driven to rotate by rotating the handle 7 to adjust the rotation position of the rotating shaft 36, and then the clamping rod 4 is rotated.

[0047] The clamping rod 4 and the measuring piece 5, the clamping rod 4 includes a positive conductive clamping piece 41, a negative conductive clamping piece 42 and an insulating base rod 43, the positive conductive clamping piece 41 and the negative conductive clamping piece 42 are arranged on the insulating base rod 43 and can slide on the insulating base rod 43; the positive conductive clamping piece 41 and the negative conductive clamping piece 42 are used to clamp the two ends of the lightning arrester respectively; the clamping rod 4 also includes: a first slide tube 44 and a second slide tube 45, a plurality of fixed seats 431 are arranged on the insulating base rod 43 along the length direction of the insulating base rod 43, the two ends of the first slide tube 44 are respectively installed on the corresponding two fixed seats 431, and the two ends of the second slide tube 45 are respectively installed on the corresponding two fixed seats 431, the positive conductive clamping piece 41 is slidably installed on the first slide tube 44, and the negative conductive clamping piece 42 is slidably installed on the second slide tube 45. The positive electrode conductive clamp 41 includes a positive electrode U-shaped buckle 411, a first fixed buckle 412 and a first slide seat 413, wherein the first fixed buckle 412 is slidably mounted on the first slide tube 44, the positive electrode U-shaped buckle 411 is fixedly connected to the first fixed buckle 412, the bottom end of the first fixed buckle 412 is fixedly connected to the first slide seat 413, and the first slide seat 413 is slidably connected to the insulating base rod 43, and the first fixed buckle 412 and the first slide seat 413 jointly limit the positive electrode conductive clamp 41 to slide in the length direction of the insulating base rod 43; The negative electrode conductive clamp 42 includes a negative electrode U-shaped buckle 421, a second fixed buckle 422 and a second slide 423. The second fixed buckle 422 is slidably installed on the second slide tube 45. The negative electrode U-shaped buckle 421 is fixed to the second fixed buckle 422. The bottom end of the second fixed buckle 422 is fixedly connected to the second slide 423. The second slide 423 is slidably connected to the insulating base rod 43. The second fixed buckle 422 and the second slide 423 jointly limit the negative electrode conductive clamp 42 to slide in the length direction of the insulating base rod 43. A first rope hole 432 is provided on the insulating base rod 43, and a first long slit 441 is provided on the first slide tube 44 along the length direction of the first slide tube 44. One end of the second rope 8 passes through the first rope hole 432 and then penetrates into the first slide tube 44 and extends out from the first long slit 441 to be fixed on the first fixing buckle 412; a first spring 46 is sleeved on the first slide tube 44, and the first spring 46 is located between the first fixing buckle 412 and a fixing seat 431 on the first slide tube 44 near the first rope hole 432.A second rope hole 433 is provided on the insulating base rod 43, and a second long slit 451 is provided on the second slide tube 45 along the length direction of the second slide tube 45. One end of the third rope 9 passes through the second rope hole 433 and then penetrates into the second slide tube 45 and extends out from the second long slit 451 to be fixed on the second fixing buckle 422. By pulling the other ends of the second rope 8 and the third rope 9 respectively, the positive conductive clamp 41 and the negative conductive clamp 42 are driven to slide, thereby adjusting the distance between the positive conductive clamp 41 and the negative conductive clamp 42; a second spring 47 is sleeved on the second slide tube 45, and the second spring 47 is located between the second fixing buckle 422 and the fixing seat 431 on the second slide tube 45 near the second rope hole 433. The positive pole U-shaped buckle 411 also includes two first spring pieces 4111 arranged opposite to each other, and the positive pole clamp conductive connector 51 is simultaneously connected to the two first spring pieces 4111 arranged opposite to each other, and the negative pole U-shaped buckle 421 also includes two second spring pieces 4211 arranged opposite to each other, and the negative pole clamp conductive connector 52 is simultaneously connected to the two second spring pieces 4211 arranged opposite to each other, and the first spring piece 4111 and the second spring piece 4211 use their own restoring force to press against the two ends of the lightning arrester, thereby increasing the contact area with the end of the lightning arrester and eliminating the contact resistance error.

[0048] The measuring part 5 includes a positive electrode clamp conductive connector 51 and a negative electrode clamp conductive connector 52. The positive electrode clamp conductive connector 51 is installed on the positive electrode conductive clamp 41, and the negative electrode clamp conductive connector 52 is installed on the negative electrode conductive clamp 42. The positive electrode clamp conductive connector 51 is connected to a measuring line 53, and the negative electrode clamp conductive connector 52 is connected to a first grounding line 54. The measuring line 53 is used to connect to the high voltage end of the insulation resistance measuring device, and the first grounding line 54 is connected to the grounding end of the insulation resistance measuring device.

[0049] The inner layer of the measuring wire 53 is a conducting wire, and the outer layer of the measuring wire is a shielding wire that wraps the conducting wire. The shielding wire is a copper mesh braided wire, and one end of the shielding wire is connected to the shielding end of the insulation resistance measuring device.

[0050] The shielding cover 6 is fixedly connected to the insulating base rod 43, and the shielding cover 6 covers all or part of the arrester. The first base 61 has a first fan-shaped slide rail 611, and the second base 62 has a second fan-shaped slide rail 621. The first base 61 and the second base 62 are respectively fixedly connected to the two ends of the insulating base rod 43, and the two ends of a plurality of ribs 63 are respectively installed on the first fan-shaped slide rail 611 and the second fan-shaped slide rail 621, so as to adjust the opening and closing angle of the shielding net 64. The shielding net 64 is an aluminum net, and the shielding net 64 is installed on a plurality of ribs 63. The second grounding wire 65 is connected to the shielding net 64. According to Faraday's law of electromagnetic induction, electromagnetic waves will generate induced currents on the surface of the shielding layer, and these induced currents protect the signals inside the cable from interference through the grounding wire.

[0051] Example 2

[0052] A testing method based on a portable lightning arrester insulation resistance on-site testing device comprises the following steps:

[0053] Connect the measuring wire 53 to the high voltage terminal of the insulation resistance measuring device, and connect the first grounding wire 54 to the grounding terminal of the insulation resistance measuring device;

[0054] According to the position of the lightning arrester, the rotating handle 7 is rotated to drive the first rope 2 to rotate, thereby adjusting the rotation position of the rotating shaft 36, the rotating shaft 36 drives the clamping rod connecting seat 32 to rotate, and the holding rod connecting seat 32 drives the insulating base rod 43 to rotate. The rotation position of the positive conductive clamp 41 and the negative conductive clamp 42 is adjusted by rotating the insulating base rod 43 until they are aligned with the lightning arrester. According to the spacing between the high-voltage end and the low-voltage end of the lightning arrester, the positive conductive clamp 41 and the negative conductive clamp 42 are driven to slide on the insulating base rod 43 by pulling the second rope 8 and the third rope 9 respectively, thereby adjusting the spacing between the positive conductive clamp 41 and the negative conductive clamp 42 until it matches the spacing between the two ends of the lightning arrester, clamping the positive conductive clamp 41 at the high-voltage end of the lightning arrester, and clamping the negative conductive clamp 42 at the low-voltage end of the lightning arrester, specifically, the first spring clip 4111 and the second spring clip 4211 use their own restoring force to press the two ends of the lightning arrester tightly;

[0055] The insulation resistance measuring device supplies power to the arrester through the measuring line 53. The arrester is connected to the ground terminal of the insulation resistance measuring device through the first grounding line 54 to form a loop. The insulation resistance measuring device measures the voltage and current of the loop and calculates the resistance of the arrester through the voltage and current.

[0056] The embodiments described above are only used to illustrate the technical solutions of the present application, rather than to limit them. Although the present application has been described in detail with reference to the aforementioned embodiments, a person skilled in the art should understand that the technical solutions described in the aforementioned embodiments may still be modified, or some of the technical features may be replaced by equivalents. Such modifications or replacements do not deviate the essence of the corresponding technical solutions from the spirit and scope of the technical solutions of the embodiments of the present application, and should all be included in the protection scope of the present application.

Claims

1. A portable on-site lightning arrester insulation resistance test device, characterized in that: include: A clamping rod (4) and a measuring piece (5), wherein the clamping rod (4) comprises a positive conductive clamping piece (41), a negative conductive clamping piece (42) and an insulating base rod (43), wherein the positive conductive clamping piece (41) and the negative conductive clamping piece (42) are arranged on the insulating base rod (43) and can slide on the insulating base rod (43); the positive conductive clamping piece (41) and the negative conductive clamping piece (42) are used to clamp two ends of the arrester respectively; The measuring component (5) comprises a positive electrode clamp conductive connector (51) and a negative electrode clamp conductive connector (52); the positive electrode clamp conductive connector (51) is mounted on the positive electrode conductive clamp (41); the negative electrode clamp conductive connector (52) is mounted on the negative electrode conductive clamp (42); the positive electrode clamp conductive connector (51) is connected to a measuring line (53); the negative electrode clamp conductive connector (52) is connected to a first grounding line (54); the measuring line (53) is used to be connected to a high voltage terminal of an insulation resistance measuring device; the first grounding line (54) is connected to a grounding terminal of the insulation resistance measuring device.

2. The portable on-site lightning arrester insulation resistance test device according to claim 1 is characterized in that: Also includes: A tubular handle (1), a first rope (2) and a rotating connection part (3), wherein the rotating connection part (3) rotatably connects the front end of the tubular handle (1) and the clamping rod (4); The rotating connection part (3) comprises a handle connection seat (31), a clamping rod connection seat (32), a bearing seat (33), a bearing (34) and a rotating shaft (36); the handle connection seat (31) is fixedly connected to the front end of the tubular handle (1); the handle connection seat (31) has a groove (311); and the bottom of the handle connection seat (31) below the groove (311) has a first hole (3111) communicating with the groove (311); the bearing seat (33) is fixed to the groove (311) and the first hole (3111) is connected to the groove (311). In the groove (311), the bearing (34) is installed on the bearing seat (33), and a second hole (331) is provided in the middle of the bearing seat (33). The top end of the rotating shaft (36) passes through the first hole (3111), the second hole (331) and the inner ring of the bearing (34) in sequence and is fixedly connected to the bottom surface of the clamping rod connecting seat (32). The rotating shaft (36) is connected to the bearing seat (33) through the bearing (34), and the top surface of the clamping rod connecting seat (32) is fixedly connected to the insulating base rod (43); A rotating shaft disk (361) is fixed at the bottom end of the rotating shaft (36); one end of the first rope (2) passes through the front end of the tubular handle (1) and is fixedly connected to the rotating shaft disk (361) at the bottom end of the rotating shaft (36); the other end of the first rope (2) passes through the rear end of the tubular handle (1) and is fixed to the rotating handle (7); the rotating handle (7) is sleeved on the rear end of the tubular handle (1) and can rotate on the tubular handle (1); the rotating handle (7) drives the first rope (2) to rotate, thereby adjusting the rotation position of the rotating shaft (36).

3. The portable on-site lightning arrester insulation resistance test device according to claim 2 is characterized in that: The clamping rod (4) also includes: A first sliding tube (44) and a second sliding tube (45), a plurality of fixing seats (431) are provided on the insulating base rod (43) along the length direction of the insulating base rod (43), two ends of the first sliding tube (44) are respectively mounted on the corresponding two fixing seats (431), and two ends of the second sliding tube (45) are respectively mounted on the corresponding two fixing seats (431), the positive electrode conductive clamping member (41) is slidably mounted on the first sliding tube (44), and the negative electrode conductive clamping member (42) is slidably mounted on the second sliding tube (45).

4. The portable on-site lightning arrester insulation resistance test device according to claim 3 is characterized in that: The positive electrode conductive clamp (41) comprises a positive electrode U-shaped buckle (411), a first fixed buckle (412) and a first slide seat (413); the first fixed buckle (412) is slidably mounted on the first slide tube (44); the positive electrode U-shaped buckle (411) is fixedly connected to the first fixed buckle (412); the bottom end of the first fixed buckle (412) is fixedly connected to the first slide seat (413); the first slide seat (413) is slidably connected to the insulating base rod (43); the first fixed buckle (412) and the first slide seat (413) jointly limit the positive electrode conductive clamp (41) to slide in the length direction of the insulating base rod (43); The negative electrode conductive clamp (42) comprises a negative electrode U-shaped buckle (421), a second fixed buckle (422) and a second slide seat (423); the second fixed buckle (422) is slidably mounted on the second slide tube (45); the negative electrode U-shaped buckle (421) is fixedly connected to the second fixed buckle (422); the bottom end of the second fixed buckle (422) is fixedly connected to the second slide seat (423); the second slide seat (423) is slidably connected to the insulating base rod (43); the second fixed buckle (422) and the second slide seat (423) jointly limit the negative electrode conductive clamp (42) to slide in the length direction of the insulating base rod (43).

5. The portable on-site lightning arrester insulation resistance test device according to claim 4 is characterized in that: Also includes: A second rope (8), a first rope hole (432) is provided on the insulating base rod (43), a first long slit (441) is provided on the first slide tube (44) along the length direction of the first slide tube (44), one end of the second rope (8) passes through the first rope hole (432), then passes into the first slide tube (44), extends out from the first long slit (441), and is fixedly connected to the first fixing buckle (412); A first spring (46) is sleeved on the first sliding tube (44), and the first spring (46) is located between the first fixing buckle (412) and a fixing seat (431) on the first sliding tube (44) close to the first rope hole (432).

6. The portable on-site lightning arrester insulation resistance test device according to claim 5 is characterized in that: Also includes: A third rope (9), a second rope hole (433) is provided on the insulating base rod (43), a second long slit (451) is provided on the second slide tube (45) along the length direction of the second slide tube (45), one end of the third rope (9) passes through the second rope hole (433) and then penetrates into the second slide tube (45) and extends out from the second long slit (451) to be fixed on the second fixing buckle (422), and the positive conductive clamp (41) and the negative conductive clamp (42) are driven to slide by pulling the other ends of the second rope (8) and the third rope (9) respectively, so as to adjust the distance between the positive conductive clamp (41) and the negative conductive clamp (42); A second spring (47) is sleeved on the second sliding tube (45), and the second spring (47) is located between the second fixing buckle (422) and a fixing seat (431) on the second sliding tube (45) close to the second rope hole (433).

7. The portable on-site lightning arrester insulation resistance test device according to claim 6 is characterized in that: The positive electrode U-shaped buckle (411) further includes two first elastic sheets (4111) arranged opposite to each other, and the positive electrode clamp conductive connector (51) is simultaneously connected to the two first elastic sheets (4111) arranged opposite to each other; The negative electrode U-shaped buckle (421) further includes two second spring sheets (4211) arranged opposite to each other, and the negative electrode clamp conductive connector (52) is simultaneously connected to the two second spring sheets (4211) arranged opposite to each other.

8. The portable on-site lightning arrester insulation resistance test device according to claim 1 is characterized in that: Also includes: A shielding cover (6), wherein the shielding cover (6) is fixedly connected to the insulating base rod (43), and the shielding cover (6) covers the arrester in whole or in part. The shielding cover (6) further comprises: A first base (61) and a second base (62), wherein the first base (61) has a first fan-shaped slide rail (611), and the second base (62) has a second fan-shaped slide rail (621), and the first base (61) and the second base (62) are respectively fixed to two ends of the insulating base rod (43); Umbrella ribs (63), two ends of a plurality of umbrella ribs (63) are slidably mounted on a first fan-shaped slide rail (611) and a second fan-shaped slide rail (621); A shielding net (64), wherein the shielding net (64) is installed on a plurality of umbrella ribs (63); A second grounding wire (65), wherein the second grounding wire (65) is connected to the shielding net (64).

9. The portable on-site lightning arrester insulation resistance test device according to claim 1 is characterized in that: The inner layer of the measuring wire (53) is a conducting wire, and the outer layer of the measuring wire is a shielding wire that wraps the conducting wire. One end of the shielding wire is connected to a shielding end of an insulation resistance measuring device.

10. A testing method based on the portable on-site testing device for the insulation resistance of a lightning arrester according to claim 7, characterized in that: The following steps are involved: Connecting a measuring line (53) to a high voltage terminal of an insulation resistance measuring device, and connecting a first grounding line (54) to a grounding terminal of the insulation resistance measuring device; According to the position of the lightning arrester, the rotating handle (7) is rotated to drive the first rope (2) to rotate, thereby adjusting the rotation position of the rotating shaft (36), the rotating shaft (36) drives the clamping rod connecting seat (32) to rotate, and the holding rod connecting seat (32) further drives the insulating base rod (43) to rotate, and the rotation position of the positive conductive clamp (41) and the negative conductive clamp (42) is adjusted by rotating the insulating base rod (43) until they are aligned with the lightning arrester, and according to the spacing between the high-voltage end and the low-voltage end of the lightning arrester, the second rope (8) and the third rope (9) are pulled respectively to drive the positive conductive clamp (41) and the negative conductive clamp (42) to slide on the insulating base rod (43), thereby adjusting the spacing between the positive conductive clamp (41) and the negative conductive clamp (42) until they match the spacing between the two ends of the lightning arrester, and the positive conductive clamp (41) clamps the high-voltage end of the lightning arrester, and the negative conductive clamp (42) clamps the low-voltage end of the lightning arrester; The insulation resistance measuring device supplies power to the lightning arrester through a measuring line (53); the lightning arrester is connected to the grounding terminal of the insulation resistance measuring device through a first grounding line (54) to form a loop; the insulation resistance measuring device measures the voltage and current of the loop and calculates the resistance of the lightning arrester through the voltage and current.

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