High strength insulating rod testing fixture

Abstract

This invention provides a high-strength insulating rod testing fixture. The insulating rod body to be tested is fixed to a first U-shaped test clamp and a second U-shaped test clamp. An acoustic-optical detector transmits electrical signals from the contact area between the conductive cotton and the insulating rod to the detector via the first and second U-shaped test clamps, thus achieving insulation testing of the insulating rod. Subsequently, the insulating rod body, fixed by the first U-shaped test clamp, is guided by the second U-shaped test clamp to the electrode clamp until the insulating rod body is clamped by both electrode clamps. At this point, the first and second lifting seats descend, causing the first and second U-shaped test clamps to detach from the insulating rod body. After adjusting the clamping position of the electrode clamps on the insulating rod body, one electrode clamp can be grounded, and the other electrode clamp can be connected to high voltage, allowing for a withstand voltage test of the insulating rod body. This completes the testing of the insulation and withstand voltage performance of the insulating rod, which helps to shorten the testing cycle of the insulating rod body and improve testing efficiency.

Description

Technical Field

[0001] This utility model relates to the field of insulating rod testing technology, and in particular to a high-strength insulating rod testing fixture. Background Technology

[0002] Insulating rods are core safety tools used for live-line work in power systems. They are widely used in the operation and maintenance of substations, transmission lines and distribution facilities, and are key equipment to ensure the safety of power operations.

[0003] Currently, the inspection of insulating rods typically follows a three-step process: visual inspection → insulation testing → withstand voltage testing. Insulation testing assesses the ability to prevent current leakage by measuring the resistance of the insulating material, primarily detecting whether the insulation layer is damp or aged. Withstand voltage testing applies a test voltage higher than the rated voltage to verify the insulating rod's ability to withstand extreme conditions, preventing electric shock accidents caused by voltage breakdown. Equipment that fails the insulation test must not proceed to the withstand voltage testing stage.

[0004] However, most current insulation rod testing fixtures only have a single testing function, capable of performing either insulation testing or withstand voltage testing. This results in long testing cycles and low testing efficiency. If an insulation rod that has not completed insulation testing is subjected to withstand voltage testing, the insulation rod with insulation defects may suddenly break down under the high voltage of the withstand voltage test, leading to current leakage or short circuits and creating safety hazards.

[0005] Therefore, in order to meet the actual testing needs of insulating rods, it is necessary to provide a testing fixture that can perform insulation testing and withstand voltage testing on insulating rods. Utility Model Content

[0006] In response to the needs of the prior art, this utility model provides a high-strength insulating rod testing fixture.

[0007] A high-strength insulating rod testing fixture includes a base, an insulation testing component, and a withstand voltage testing component. A first moving component, a fixed seat, and a second moving component are sequentially fixedly mounted on the base. The first and second moving components are symmetrically arranged on both sides of the fixed seat. Each of the first and second moving components includes an outer side plate and an inner side plate sequentially mounted horizontally on the base. A cylinder is located on the side of the outer side plate away from the inner side plate. A piston rod and a pair of guide rods located on both sides of the piston rod are horizontally arranged between the outer and inner side plates. The piston rod is fixedly connected to the cylinder. A slider is slidably mounted on the guide rod, and the piston rod is fixedly connected to the slider. The cylinder is used to drive the slider to move on the guide rod. A mounting bracket is provided on the slider. The insulation testing assembly includes a first lifting seat and a second lifting seat. The first lifting seat is provided with a first fixed rod and is mounted on the mounting plate of the first movable assembly. The second lifting seat is provided with an acoustic and optical detector, and the first fixed rod is provided with a first U-shaped test clamp. The first U-shaped test clamp is provided with a first alloy screw threaded to the side of the first U-shaped test clamp. The voltage detection contact of the acoustic and optical detector is fixedly connected to a second U-shaped test clamp, and a conductive cotton is provided inside the second U-shaped test clamp. The withstand voltage testing assembly includes a second fixed rod and a third fixed rod mounted on the mounting plate of the second movable assembly. Both the second and third fixed rods are provided with an electrode clamp. The second lifting seat and the second fixed rod are sequentially mounted on the fixed seat.

[0008] Furthermore, diagonal braces are symmetrically arranged on both sides of the second and third fixing rods.

[0009] Furthermore, a first fixing plate is sleeved on one end of the first alloy screw, and a first anti-slip pad is provided on the first fixing plate.

[0010] Furthermore, the conductive cotton includes a first conductive cotton and a second conductive cotton; the second U-shaped test clamp is provided with a second alloy screw that is threadedly connected to the side of the second U-shaped test clamp; a second fixing plate is sleeved on one end of the second alloy screw, and the first conductive cotton is provided on the second fixing plate; the second conductive cotton is provided on the inner side of the second U-shaped test clamp.

[0011] Furthermore, each electrode clamp includes an upper clamping block and a lower clamping block, with one end of the upper clamping block and one end of the lower clamping block hinged together, and the other end detachably connected to the other end of the lower clamping block.

[0012] Furthermore, a conductive sponge is provided on the inner side of both the upper and lower clamping blocks, and a conductive groove is provided on each of the conductive sponges, with the conductive groove of the upper clamping block corresponding to the conductive groove of the lower clamping block.

[0013] Furthermore, the conductive sponge includes a sponge matrix, and a conductive adhesive layer, a flame retardant layer and an antioxidant layer are sequentially disposed on the outer surface of the sponge matrix, and the antioxidant layer is provided with a plurality of through holes.

[0014] Furthermore, each of the conductive sponges is connected to the upper or lower clamping block via a connecting seat; the upper and lower clamping blocks are provided with a plurality of embedded blocks on their inner sides; each of the connecting seats is provided with a plurality of embedded grooves that match the embedded blocks one by one, and the connecting seat is embedded and connected to the embedded blocks via the embedded grooves, so that the conductive sponge is fixed on the upper or lower clamping block.

[0015] Furthermore, a second anti-slip pad is provided below the base.

[0016] Furthermore, the mounting base is also equipped with a proximity sensor for detecting whether the main body of the insulating rod under test is present on the second U-shaped test clamp. The proximity sensor is an optical sensor or an infrared sensor.

[0017] The beneficial effects of this utility model are as follows: This utility model provides a high-strength insulating rod testing fixture. By fixing the test end of the insulating rod to be tested on the first U-shaped test clamp and the second U-shaped test clamp, the acoustic and optical detector transmits the electrical signal of the contact part between the conductive cotton and the insulating rod to the internal test circuit of the acoustic and optical detector through the first U-shaped test clamp and the second U-shaped test clamp, thereby realizing the insulation performance test of the insulating rod.

[0018] Then, the insulating rod body, which is fixed by the first U-shaped test clamp, can be guided by the second U-shaped test clamp to the electrode clamp via the first moving component until the insulating rod body is clamped by the two electrode clamps. At this time, the first fixing rod and the acoustic-optical detector descend via the first lifting seat and the second lifting seat, respectively, so that the first U-shaped test clamp and the second U-shaped test clamp are detached from the insulating rod body. After adjusting the clamping position of the electrode clamp on the insulating rod body, one electrode clamp can be grounded and the other electrode clamp can be connected to high voltage, so as to perform the withstand voltage test on the insulating rod body, thereby completing the detection of the insulation and withstand voltage performance of the insulating rod, which helps to shorten the detection cycle of the insulating rod and improve the detection efficiency. Attached Figure Description

[0019] Figure 1 A three-dimensional structural schematic diagram of a high-strength insulating rod testing fixture provided by this utility model.

[0020] Figure 2 A top view of the base, the first moving component, and the second moving component provided for this utility model;

[0021] Figure 3 A schematic diagram of the first U-shaped test clip structure provided by this utility model;

[0022] Figure 4 This is a schematic diagram of the second U-shaped test clip structure provided by this utility model;

[0023] Figure 5 A schematic diagram of the structure of the electrode clip provided by this utility model;

[0024] Figure 6 for Figure 5 A schematic diagram of the structure of part A.

[0025] Attached Figure

[0026] 1. Base; 2. Fixing seat; 3. Outer side plate; 4. Inner test plate; 5. Cylinder; 6. Piston rod; 7. Guide rod; 8. Slider; 9. Mounting plate; 10. First fixing rod; 11. Acoustic and optical detector; 12. First U-shaped test clamp; 13. Second U-shaped test clamp; 14. First alloy screw; 15. First fixing plate; 16. First anti-slip pad; 17. First conductive cotton; 18. Second conductive cotton; 19. Second alloy screw; 20. Second fixing plate; 21. ... 21. Second fixing rod; 22. Third fixing rod; 23. Electrode clamp; 231. Upper clamping block; 232. Lower clamping block; 24. Proximity sensor; 25. Conductive sponge; 251. Conductive groove; 252. Sponge substrate; 253. Conductive adhesive layer; 254. Flame retardant layer; 255. Antioxidant layer; 256. Through hole; 26. Connecting seat; 27. Embedded block; 28. Embedded groove; 29. ​​Diagonal rod; 30. Second anti-slip pad; 31. First lifting seat; 32. Second lifting seat. Detailed Implementation

[0027] To provide a more detailed description of this utility model, the following description is provided in conjunction with the accompanying drawings. It should be noted that the embodiments described below are merely some, not all, of the embodiments of this utility model. All other embodiments obtained by those skilled in the art based on the embodiments of this utility model without inventive effort are within the scope of protection of this utility model.

[0028] refer to Figure 1 As shown, a high-strength insulating rod testing fixture is used for testing the main body of the insulating rod. It includes a base 1, an insulation testing component, and a withstand voltage testing component. A first moving component, a fixed seat 2, and a second moving component are sequentially fixed on the base 1. The first and second moving components are symmetrically arranged on both sides of the fixed seat 2 to achieve directional transmission.

[0029] refer to Figure 2 and Figure 3As shown, both the first and second moving components include an outer side plate 3 and an inner side plate 4 arranged sequentially on the base 1 in a horizontal direction. A cylinder 5 is provided on the side of the outer side plate 3 away from the inner side plate 4. A piston rod 6 and a pair of guide rods 7 located on both sides of the piston rod 6 are arranged horizontally between the outer side plate 3 and the inner side plate 4. The piston rod 6 is fixedly connected to the cylinder 5. A slider 8 is slidably arranged on the guide rod 7, and the piston rod 6 is fixedly connected to the slider 8. The cylinder 5 is used to drive the slider 8 to move on the guide rod 7. A mounting plate 9 is also provided on the slider 8.

[0030] Powered by compressed air, the piston rod 6 is driven to move by the air pressure difference on both sides of the piston inside cylinder 5. When air enters the rodless chamber, the piston rod 6 extends; when air enters the rod chamber, the piston rod 6 retracts. This causes the slider 8 to move back and forth along the guide rod 7 on the piston rod 6, thereby driving the mounting plate 9 to move horizontally. Simultaneously, the transmission support structure using double guide rods 7 and piston rod 6 effectively disperses lateral forces, significantly improving the torsional resistance of the slider 8 during horizontal movement and enhancing the stability of the slider 8's transmission.

[0031] refer to Figure 1 , Figure 3 as well as Figure 4 As shown, the insulation testing assembly includes a first lifting seat 31 and a second lifting seat 32. The first lifting seat 31 is provided with a first fixing rod 10 and is mounted on the mounting plate 9 of the first moving assembly. The second lifting seat 32 is provided with an audible and visual detector 11, and the first fixing rod 10 is provided with a first U-shaped test clamp 12. The detection contact of the audible and visual detector 11 is fixedly connected to a second U-shaped test clamp 13, and a conductive cotton is provided inside the second U-shaped test clamp 13. The first lifting seat 31 can slide horizontally on the guide rod 7 along with the mounting plate 9, thereby adjusting the distance between the first fixing rod 10 and the audible and visual detector 11.

[0032] In this embodiment, both the first lifting seat 31 and the second lifting seat 32 include a lifting rod comprising a telescopic tube and a hydraulic rod. The telescopic tube is located below the acoustic-optical detector 11 and is fixedly connected to the acoustic-optical detector 11. The hydraulic rod is located inside the telescopic tube and is fixedly connected to the telescopic tube. The telescopic tube is extended by the hydraulic rod to achieve lifting. The openings of the first U-shaped test clamp 12 and the second U-shaped test clamp 13 both face upwards, and the first U-shaped test clamp 12 and the second U-shaped test clamp 13 can be separated from the insulating rod body by the descent of the first lifting seat 31 and the second lifting seat 32.

[0033] The first U-shaped test clamp 12 is provided with a first alloy screw 14 that is threaded to the side of the first U-shaped test clamp 12; a first fixing plate 15 is sleeved on one end of the first alloy screw 14, and a first anti-slip pad 16 is provided on the first fixing plate 15.

[0034] By tightening the first alloy screw 14, the first fixing plate 15 is driven to move axially, thereby using the self-locking property of the screw thread to clamp and fix the insulating rod body to be tested, which is placed in the first U-shaped test clamp 12. The first anti-slip pad 16 can increase the coefficient of friction to prevent the test piece from sliding, and at the same time, it can disperse local pressure to avoid damage to the surface of the insulating rod body to be tested. The alloy material gives the screw 14 high strength, light weight and corrosion resistance, making it suitable for high load or harsh environments.

[0035] The conductive cotton includes a first conductive cotton 17 and a second conductive cotton 18; the second U-shaped test clamp 13 is provided with a second alloy screw 19 that is threaded to the side of the second U-shaped test clamp 13; a second fixing plate 20 is sleeved on one end of the second alloy screw 19, and the first conductive cotton 17 is provided on the second fixing plate 20; the second conductive cotton 18 is provided on the inner side of the second U-shaped test clamp 13.

[0036] By tightening the second alloy screw 19, the second fixing plate 20 is driven to move axially, thereby using the self-locking property of the screw thread to clamp and fix the insulating rod body to be tested, which is placed in the second U-shaped test clamp 13. At the same time, by providing the first conductive cotton 17 on the second fixing plate 20 and the second conductive cotton 18 on the inner side of the second U-shaped test clamp 13, the contact area between the conductive cotton and the insulating rod body during clamping can be increased, and the test piece can be prevented from sliding, thus avoiding damage to the surface of the insulating rod body to be tested.

[0037] In this embodiment, both the first fixing plate and the second fixing plate are arc-shaped structures that match the main body of the insulating rod, thereby increasing the contact area between the first anti-slip pad 16, the conductive cotton and the main body of the insulating rod during clamping, and improving the stability of clamping.

[0038] The working principle of this insulation testing component is as follows: One end of the insulating rod to be tested is placed on the first U-shaped test clamp 12, and the other end is placed on the second U-shaped test clamp 13. Then, by tightening the first alloy screw 14 and the second alloy screw 19, the first anti-slip pad 16 is brought into contact with one end of the insulating rod, and the first conductive cotton 17 and the second conductive cotton 18 wrap around the other end of the insulating rod, thus fixing the insulating rod. Subsequently, the audible and visual detector 11 is activated, transmitting electrical signals from the contact area between the conductive cotton and the insulating rod to the internal test circuit module of the audible and visual detector 11 via the first U-shaped test clamp 12 and the second U-shaped test clamp 13, thereby enabling insulation performance testing. When the insulation performance of the contact area of ​​the insulating rod to be tested is poor, the audible and visual detector 11 will emit an audible and visual alarm signal, facilitating the inspection personnel to obtain the test results and remove the insulating rod with insulation defects. Simultaneously, the cylinder 5 drives the mounting plate on the slider 8 to move towards the acoustic and optical detector 11, thereby causing the insulating rod body fixed on the first U-shaped test clamp 12 to move horizontally, gradually increasing the contact area between the insulating rod body and the conductive cotton. This allows for complete testing of the insulating rod body 4, avoiding the need for personnel to push the insulating rod body to adjust the test range, and significantly improving testing efficiency and quality.

[0039] refer to Figure 1 and Figure 5 As shown, the withstand voltage test assembly includes a second fixed rod 21 and a third fixed rod 22 disposed on the mounting plate 9 of the second moving assembly. Both the second fixed rod 21 and the third fixed rod 22 are equipped with an electrode clamp 23. The second lifting seat 92 and the second fixed rod 21 are sequentially disposed on the fixed seat 2. The fixed seat 2 is also equipped with a proximity sensor 24 for detecting whether the insulating rod body under test is present on the second U-shaped test clamp 21. This allows the cylinder 5 to be driven or the tooling to be determined as to whether the insulating rod body under test is present on the second U-shaped test clamp 21. In this embodiment, the proximity sensor 24 is an optical sensor or an infrared sensor. In this embodiment, the bottom surface of the insulating rod of the first U-shaped test clamp 12 and the second U-shaped test clamp 13 is on the same horizontal plane as the clamping surface of the electrode clamp 23.

[0040] After the insulation performance test of the insulating rod body is completed, the insulating rod body that has passed the test is not removed. The cylinder 5 drives the slider 8 to move the mounting plate 9, thereby moving the first U-shaped test clamp 12 to one end of the insulating rod body and fixing the insulating rod body to the first U-shaped test clamp 12. The other end is placed on the second U-shaped test clamp 13. At this time, the second alloy screw 19 on the second U-shaped test clamp 13 is released. Therefore, driven by the first moving component, the insulating rod body moves with the mounting plate 9 closer to the acoustic and optical detector 11, and then gradually moves to the clamping surface of the electrode clamp 23 on one side, guided by the second U-shaped test clamp 13, so that the insulating rod body is clamped by the two electrode clamps. At this time, the first lifting seat 31 and the second lifting seat 32 are lowered, so that the first U-shaped test clamp 12 and the second U-shaped test clamp 13 are disengaged from the insulating rod body, completing the transition from the insulation test component to the withstand voltage test component.

[0041] In practical use, the mounting plate 9 of the second moving component can be moved to the side closest to the fixed base, facilitating faster transfer of the insulating rod body to the electrode clamp 23. One end of the insulating rod body typically includes a connector. Through the arrangement of the first lifting seat 31 and the second lifting seat 32, and the open design of the first U-shaped test clamp 12 and the second U-shaped test clamp 13, the insulating rod can be clamped and transferred during transport and released in a timely manner, preventing the insulating rod from getting stuck in the first U-shaped test clamp 12 and the second U-shaped test clamp 13 and being unable to move normally.

[0042] Each electrode clamp 23 includes an upper clamping block 231 and a lower clamping block 232. One end of the upper clamping block 231 is hinged to one end of the lower clamping block 232, and the other end is detachably connected to the other end of the lower clamping block 232. When the insulating rod body is transferred from the insulation testing assembly to the withstand voltage testing assembly, the upper clamping block 231 and the lower clamping block 232 separate. The insulating rod body first moves above the lower clamping block 232. After the movement is completed, the upper clamping block 231 clamps the lower clamping block 232, thereby clamping and fixing the insulating rod body in the electrode clamp 23, and connecting and fixing the upper clamping block 231 and the lower clamping block 232.

[0043] In this embodiment, the other end of the upper clamping block 231 is provided with a latch, and the latch is provided with a mounting hole. The other end of the lower clamping block 232 is provided with a round hole corresponding to the mounting hole. After the upper clamping block 231 is fastened to the lower clamping block 232, the latch is fastened to one side of the lower clamping block, so that the mounting hole is aligned with the round hole and connected by a screw thread.

[0044] Both the upper clamping block 231 and the lower clamping block 232 have a conductive sponge 25 on their inner sides, and each conductive sponge 25 has a conductive groove 251. The conductive groove 251 of the upper clamping block 231 is correspondingly provided with the conductive groove 251 of the lower clamping block 232. When the electrode clamp 23 clamps the insulating rod body, the insulating rod body is located at the conductive groove 251, thereby effectively increasing the contact area between the conductive sponge 25 and the insulating rod body.

[0045] The conductive sponge 25 is connected to the upper clamping block 231 or the lower clamping block 232 through a connecting seat 26; the upper clamping block 231 and the lower clamping block 232 are provided with a plurality of embedded blocks 27 on their inner sides; the connecting seat 26 is provided with a plurality of embedded grooves 28 that match the embedded blocks 27 one by one, and the connecting seat 26 is embedded and connected to the embedded blocks 27 through the embedded grooves 28, so that the conductive sponge 25 is fixed on the upper clamping block 231 or the lower clamping block 232.

[0046] By setting the embedding block 27 and the embedding groove 28, the conductive sponge 25 can be detachably connected to the upper clamping block 231 or the lower clamping block 232, making it convenient for users to replace the damaged or aged conductive sponge 25.

[0047] Among them, reference Figure 6 As shown, the conductive sponge 25 includes a sponge substrate 252. A conductive adhesive layer 253, a flame-retardant layer 254, and an antioxidant layer 255 are sequentially disposed on the outer surface of the sponge substrate 252. The antioxidant layer 255 has a plurality of through holes 256. In this embodiment, the sponge substrate 252 is made of polyurethane as the base material.

[0048] The flame-retardant layer 254 provides a flame-retardant effect on the internal structure of the conductive sponge 25, preventing the risk of arcing or leakage current caused by insulation rod defects during withstand voltage testing, or the risk of the conductive sponge igniting due to excessive heat, thus improving safety. The anti-oxidation layer 255 effectively prevents oxidation and corrosion of the conductive sponge 25 structure, and the through-holes 256 improve the heat dissipation efficiency of the anti-oxidation layer 255, effectively reducing the internal temperature of the conductive sponge 25 and thus extending its service life.

[0049] In this embodiment, the conductive cotton and the conductive sponge 25 have the same structure.

[0050] The working principle of this withstand voltage testing component is as follows: First, the test length of the insulating rod body is determined according to the voltage level of the insulating rod to be tested. Then, the distance between the second fixed rod 21 and the second fixed rod 22 is adjusted by the second moving component to determine the test length of the insulating rod body. At this time, a motor clamp 23 is clamped at one end of the insulating rod body of the test length, and another electrode clamp 23 is clamped at the other end of the insulating rod body of the test length, so that the insulating rod body is clamped by the motor clamp 23 and placed horizontally. At this time, by using one electrode clamp 23 as the ground electrode, the end of the insulating rod body it clamps is grounded, and the other electrode clamp 23 is used as the high voltage electrode, the end of the insulating rod body it clamps is connected to high voltage, and the withstand voltage test of the insulating rod body can be performed. During the test, the withstand voltage test of the insulating rod body is carried out by observing in real time whether flashover or breakdown occurs on the insulating rod body until the withstand voltage test of the insulating rod body is completed.

[0051] Preferably, refer to Figure 1 As shown, diagonal braces 29 are symmetrically arranged on both sides of the second fixing rod 21 and the third fixing rod 22, thereby effectively improving the support strength of the second fixing rod 21 and the third fixing rod 22 and making its structure more stable.

[0052] Preferably, refer to Figure 1 As shown, a second anti-slip pad 30 is provided below the base 1 to enhance the stability of the testing fixture during use.

[0053] The preferred embodiments of this utility model disclosed above are merely illustrative of the present utility model and do not limit the utility model to the specific implementations described. Obviously, other modifications and variations can be made based on the content of this specification. The embodiments selected and specifically described in this specification are intended to better explain the principles and practical applications of this utility model, thereby enabling those skilled in the art to better understand and utilize it. They are not intended to limit the utility model, and any simple modifications to this utility model fall within the protection scope of this utility model.

Claims

1. A high-strength insulating rod testing fixture, used for testing the main body of the insulating rod, characterized in that, It includes a base, an insulation testing component, and a withstand voltage testing component; a first movable component, a fixed seat, and a second movable component are sequentially fixedly mounted on the base; the first movable component and the second movable component are symmetrically arranged on both sides of the fixed seat. Both the first and second moving components include an outer side plate and an inner side plate arranged sequentially on the base in a horizontal direction. A cylinder is provided on the side of the outer side plate away from the inner side plate. A piston rod and a pair of guide rods located on both sides of the piston rod are horizontally arranged between the outer side plate and the inner side plate. The piston rod is fixedly connected to the cylinder. A slider is slidably arranged on the guide rod, and the piston rod is fixedly connected to the slider. The cylinder is used to drive the slider to move on the guide rod. The slider is provided with a mounting plate; the insulation testing assembly includes a first lifting seat and a second lifting seat, the first lifting seat is provided with a first fixed rod, and the first lifting seat is mounted on the mounting plate of the first moving assembly; the second lifting seat is provided with an acoustic and optical detector, and the first fixed rod is provided with a first U-shaped test clamp; the first U-shaped test clamp is provided with a first alloy screw threaded to the side of the first U-shaped test clamp; the voltage detection contact of the acoustic and optical detector is fixedly connected to a second U-shaped test clamp, and a conductive cotton is provided inside the second U-shaped test clamp; the withstand voltage testing assembly includes a second fixed rod and a third fixed rod mounted on the mounting plate of the second moving assembly, and both the second fixed rod and the third fixed rod are provided with an electrode clamp, and the second lifting seat and the second fixed rod are sequentially arranged on the fixed seat.

2. The high-strength insulating rod testing fixture according to claim 1, characterized in that, Both the second and third fixing rods have diagonal braces symmetrically arranged on both sides.

3. The high-strength insulating rod testing fixture according to claim 1, characterized in that, A first fixing plate is sleeved on one end of the first alloy screw, and a first anti-slip pad is provided on the first fixing plate.

4. The high-strength insulating rod testing fixture according to claim 1, characterized in that, The conductive cotton includes a first conductive cotton and a second conductive cotton; the second U-shaped test clamp is provided with a second alloy screw that is threaded to the side of the second U-shaped test clamp; a second fixing plate is sleeved on one end of the second alloy screw, and the first conductive cotton is provided on the second fixing plate; the second conductive cotton is provided on the inner side of the second U-shaped test clamp.

5. The high-strength insulating rod testing fixture according to claim 1, characterized in that, Each electrode clamp includes an upper clamping block and a lower clamping block. One end of the upper clamping block and one end of the lower clamping block are hinged together, and the other end is detachably connected to the other end of the lower clamping block.

6. The high-strength insulating rod testing fixture according to claim 5, characterized in that, The upper clamping block and the lower clamping block are each provided with a conductive sponge on their inner sides. Each conductive sponge is provided with a conductive groove, and the conductive groove of the upper clamping block is provided in correspondence with the conductive groove of the lower clamping block.

7. The high-strength insulating rod testing fixture according to claim 6, characterized in that, The conductive sponge includes a sponge matrix, and a conductive adhesive layer, a flame retardant layer and an antioxidant layer are sequentially disposed on the outer surface of the sponge matrix. The antioxidant layer is provided with a plurality of through holes.

8. A high-strength insulating rod testing fixture according to claim 6, characterized in that, The conductive sponge is connected to the upper or lower clamping block via a connecting seat; the upper and lower clamping blocks are provided with several embedded blocks on their inner sides; the connecting seat is provided with several embedded slots that match the embedded blocks one by one, and the connecting seat is embedded and connected to the embedded blocks through the embedded slots, so that the conductive sponge is fixed on the upper or lower clamping block.

9. The high-strength insulating rod testing fixture according to claim 1, characterized in that, A second anti-slip pad is provided under the base.

10. A high-strength insulating rod testing fixture according to claim 1, characterized in that, The mounting base is also equipped with a proximity sensor to detect whether the main body of the insulating rod under test is present on the second U-shaped test clamp.

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