Multi-dimensional adjustable high-pressure test lead arrangement device and arrangement method thereof

Abstract

The patent discloses a multi-dimension adjustable high-pressure test lead arrangement device and an arrangement method thereof, which comprises an insulating support rod, a clamping assembly, a sliding adjustment mechanism and a winding positioning mechanism; the clamping assembly is arranged at both ends of the insulating support rod and is used for fixing the insulating support rod on an external carrier; the sliding adjustment mechanism is arranged along the length direction of the insulating support rod; the winding positioning mechanism is installed on the sliding adjustment mechanism and can be positioned and moved along the sliding adjustment mechanism; the winding positioning mechanism comprises a shell, a winding reel rotatably arranged in the shell and a locking assembly used for locking the rotation of the winding reel, and the winding reel is used for winding a lead wire. The inner side of the U-shaped clamp is provided with anti-skid rubber and is locked through a screw rod, cooperates with the high-strength three-layer composite structure of the insulating rod, realizes the stable clamping and insulating isolation of the device on the cover plate of the generator, solves the problem that the traditional lead wire is easy to slide off from the phase sequence belt due to the self weight and eliminates the safety hidden danger.

Description

Technical Field

[0001] This invention belongs to the field of high voltage testing technology, specifically a multi-dimensional adjustable high voltage test lead arrangement device and its arrangement method. Background Technology

[0002] As a core hub of the power system, the operational reliability of the electrical equipment in hydropower stations directly affects the safety and stability of the power grid. Due to multiple factors such as material aging, manufacturing defects, environmental temperature and humidity, and operational errors, latent insulation defects can easily develop inside the electrical equipment. If not addressed promptly, these defects can lead to serious accidents such as equipment breakdown and line tripping. Therefore, high-voltage testing has become a core method for inspecting the performance of primary electrical equipment and identifying potential insulation problems. Among these tests, the stator DC withstand voltage test is a crucial step in assessing the insulation condition of the generator stator windings, and the accuracy of the test data is decisive for ensuring the safe operation of hydropower stations.

[0003] In the specific implementation of high-voltage testing, the lead wire arrangement is crucial, directly affecting the safe distance between the leads and the grounding electrode, as well as the personal safety of the testing personnel. For a long time, the industry has generally used the traditional lead wire arrangement process of "winding wire + phase sequence strip." During the test wiring stage, operators bind and fix the high-voltage leads to the phase sequence strip, using the phase sequence strip as a supporting carrier to physically isolate the leads from the ground or metal support components, thus meeting the safety distance requirements of high-voltage testing.

[0004] However, with the increase in the capacity of hydropower station units and the increasing complexity of the testing environment, the technical limitations of the aforementioned traditional processes have become increasingly apparent.

[0005] First, high-voltage leads are usually made of heavy metals such as copper, which have a large self-weight and a relatively smooth surface insulation layer. They are only fixed to the flexible phase sequence strip by binding, and are very easy to slip off due to gravity. The longer the lead is, the higher the risk of slippage, which seriously threatens the safety of the test.

[0006] Secondly, this method lacks a flexible position adjustment mechanism. Once the lead wire position is tied and fixed, it is difficult to change. If it is necessary to adjust the height or horizontal position of the lead wire to avoid interference, the operator must manually remove the original binding and re-fix it, which makes the wiring process cumbersome and lengthy, labor-intensive, and seriously restricts the overall work efficiency of high voltage testing. Summary of the Invention

[0007] The main objective of this invention is to provide a multi-dimensional adjustable high-voltage test lead arrangement device and method that addresses problems such as lead slippage and difficulty in position adjustment.

[0008] The multi-dimensional adjustable high-voltage test lead arrangement device provided by this invention includes an insulating support rod, a clamping assembly, a sliding adjustment mechanism, and a take-up positioning mechanism. The clamping assembly is disposed at both ends of the insulating support rod and is used to fix the insulating support rod to an external carrier. The sliding adjustment mechanism is disposed along the length direction of the insulating support rod. The take-up positioning mechanism is mounted on the sliding adjustment mechanism and can move and be positioned along the sliding adjustment mechanism. The take-up positioning mechanism includes a housing, a winding reel rotatably disposed in the housing, and a locking assembly for locking the rotation of the winding reel. The winding reel is used to wind the lead.

[0009] In one embodiment of the above-mentioned device, the insulating support rod is a telescopic structure, including an outer rod and an inner rod sleeved inside the outer rod, and the outer rod and the inner rod are connected and locked by a locking buckle.

[0010] In one embodiment of the above-mentioned device, the locking buckle includes a locking sleeve, an elastic clamping part, and a locking nut. The locking sleeve is fixedly connected to the end of the outer rod. The end of the outer rod is divided circumferentially to form a plurality of elastic clamping parts. The locking sleeve and the elastic clamping parts are engaged by a tapered surface. The locking nut is threadedly connected to the outer periphery of the locking sleeve. By tightening the locking nut, the elastic clamping parts are forced to contract inward and clamp the inner rod.

[0011] In one embodiment of the above-mentioned device, the clamping assembly includes a U-shaped clamp and a locking member. A screw is threadedly connected to one side wall of the U-shaped clamp, and a clamping block is provided at one end of the screw located inside the U-shaped clamp. The other side wall of the U-shaped clamp is arranged opposite to the clamping block. Anti-slip pads are provided on the inner side wall of the U-shaped clamp and the clamping block.

[0012] In one embodiment of the above-mentioned device, the sliding adjustment mechanism includes a slide rail and a slider. The slide rail is fixedly arranged along the length direction of the insulating support rod, and the slider is slidably fitted on the slide rail. The wire take-up positioning mechanism is installed on the slider.

[0013] In one embodiment of the above device, the slide rail is an arc-shaped track, and the slider is provided with an angle adjusting bolt for adjusting the angle of the take-up positioning mechanism.

[0014] In one embodiment of the above device, the locking assembly includes a rotating shaft, a spiral spring, and a ratchet mechanism; the reel is fixedly sleeved on the rotating shaft, the spiral spring is sleeved on the outer periphery of the rotating shaft, one end of the spiral spring is connected to the housing, and the other end is connected to the rotating shaft; the ratchet mechanism includes a ratchet fixed on the rotating shaft and a pawl rotatably connected to the housing, the pawl abutting against the tooth groove of the ratchet under the action of an elastic element, thereby realizing one-way locking of the reel.

[0015] In one embodiment of the above-mentioned device, the insulating support rod adopts a three-layer composite structure, with an inner layer of high-strength fiber structure, a middle layer of Kevlar fiber structure, and an outer layer of insulating varnish.

[0016] A method for arranging leads using the above-mentioned device includes the following steps:

[0017] Step 1: Adjust the length of the insulating support rod according to the span dimensions of the external carrier and lock it with the locking buckle;

[0018] Step 2: Fix the insulating support rod to the top of the external carrier using the clamping components at both ends;

[0019] Step 3: Move the take-up positioning mechanism on the sliding adjustment mechanism and adjust it to a position that corresponds to the horizontal position of the device under test;

[0020] Step 4: Pull the lead wire in the take-up positioning mechanism to the required length, lock the lead wire length using the locking component, and connect the lead wire to the device under test;

[0021] Step 5: After the test, release the locking mechanism to allow the lead wire to retract automatically, and then remove the device.

[0022] The beneficial effects of this invention are as follows:

[0023] 1. The main support structure is a telescopic insulating rod with U-shaped clamps at both ends, replacing the traditional phase sequence tape binding method. The U-shaped clamps have anti-slip rubber on the inside and are locked with screws. Combined with the high-strength three-layer composite structure of the insulating rod, the device is stably clamped and insulated on the generator cover plate. This completely solves the problem that the traditional leads are prone to slipping off the phase sequence tape due to their own weight, eliminating safety hazards. At the same time, the telescopic insulating rod can be flexibly adjusted according to the length of the cover plate. Combined with high voltage-resistant materials, it meets the high-strength support requirements of different capacity units and different voltage levels, significantly improving the versatility of the device and the safety of on-site operations.

[0024] 2. A sliding insulating track and a positioning take-up device are integrated on the insulating rod, forming a two-dimensional adjustment degree of freedom. In the horizontal direction, the take-up device can move freely and be positioned along the rod through the cooperation of the sliding track and the slider. In the vertical direction, a positioning take-up device with vortex spring energy storage and ratchet one-way locking is used to realize automatic take-up and length locking of the lead wire. This realizes flexible and adjustable position of the test lead wire in three-dimensional space. The operator can quickly and accurately position the horizontal position and vertical height of the lead wire by a single person. It overcomes the defects of traditional methods that require repeated manual disassembly and assembly, binding and adjustment, which are difficult. It greatly shortens the test wiring time and effectively improves the work efficiency of high voltage test. Attached Figure Description

[0025] Figure 1 This is a schematic diagram of a structure according to an embodiment of the present invention.

[0026] Figure 2 for Figure 1An explosion diagram.

[0027] Figure 3 for Figure 1 A schematic diagram of the U-shaped clamp on the right side of the middle section.

[0028] Figure 4 for Figure 1 A schematic diagram of the U-shaped clamp on the left side of the middle section.

[0029] Figure 5 for Figure 1 A schematic diagram of the structure of the positioning take-up device.

[0030] Figure 6 This is a schematic diagram showing the state when used in this embodiment. Detailed Implementation

[0031] The relevant technical solutions will now be clearly and completely described with reference to the accompanying drawings of the embodiments of the present invention. The described embodiments are only a part of the embodiments, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0032] like Figure 1 and Figure 2 As shown, the multi-dimensional adjustable high-voltage test lead arrangement device disclosed in this embodiment includes a telescopic insulating rod 1, a U-shaped clamp 2, a sliding insulating track 3, and a positioning take-up device 4.

[0033] The telescopic insulating rod 1 serves as the main support structure of the device, with U-shaped clamps 2 connected to both ends. The sliding insulating track 3 is set along the length of the telescopic insulating rod, and the positioning take-up device 4 is installed on the sliding insulating track.

[0034] The telescopic insulating rod 1 is a telescopic structure formed by the hollow outer rod 11 being fitted onto the inner rod 12. Its maximum extension length is 4 meters to match the length of the generator cover plates of most hydropower stations.

[0035] The telescopic insulating rod 1 adopts a three-layer composite structure. The inner layer is a high-strength aerospace-grade special fiber structure layer, which mainly improves the strength and rigidity of the rod body. The middle layer is a Kevlar fiber structure layer, which can improve the strength, toughness and wear resistance of the insulating rod body. The outer layer is a transparent insulating paint layer, which has the characteristics of insulation, water repellency, wear resistance and high light transmittance.

[0036] The telescopic insulating rod 1 has a locking buckle at the connection between adjacent sections. The locking buckle includes a locking sleeve, an elastic clamping part, and a locking nut. The locking sleeve is fixedly connected to the end of the outer rod 11. The end of the outer tube is circumferentially divided into several elastic clamping parts, and the locking sleeve and the elastic clamping parts are connected by a tapered surface fit. The locking nut is threaded onto the outer circumference of the locking sleeve. When the locking nut is loosened, the elastic clamping parts open outwards, releasing the clamping of the inner rod 12, allowing the inner rod to extend and retract freely. When the locking nut is tightened, the locking nut compresses the locking sleeve, forcing the elastic clamping parts to contract inwards and clamp the inner rod, thus locking it in place.

[0037] The length of the telescopic insulating rod can be adjusted and locked by a locking buckle, allowing it to flexibly adapt to the cover plate length of generator sets of different capacities.

[0038] The telescopic insulating rod 1 has connectors 13 at both ends for connecting to the U-shaped clamps 2. The connectors include an internal threaded ring and a thick plate integrally connected thereto. The internal threaded ring is threadedly connected and fixed to both ends of the telescopic insulating rod.

[0039] like Figure 3 and Figure 4 As shown, there are two U-shaped clips 2, which are respectively connected to both ends of the telescopic insulating rod 1. The connecting groove 21 is a U-shaped groove, which clamps the bottom edge of the U-shaped clip and the thick plate of the connector 13 at the same time and fixes them with bolts, thus fixing the U-shaped clip to the telescopic insulating rod; this realizes the detachable connection between the U-shaped clip and the telescopic insulating rod, which facilitates the disassembly, assembly and disassembly and carrying of the device.

[0040] The U-shaped clamp 2 is made of pure copper through one-time die casting, and its size is 8cm×9.5cm. It is characterized by being rust-free, sturdy and durable.

[0041] A screw 22 with a handle is threaded onto one side of the U-shaped clamp 2, and the bottom end of the screw has a clamping block; the other side of the U-shaped clamp is opposite to the clamping block, clamping the generator cover plate. Both are equipped with anti-slip rubber to increase the friction between the U-shaped clamp and the clamped object.

[0042] The clamping force of the U-shaped clamp 2 can be adjusted by manually rotating the screw 22, thereby firmly clamping the U-shaped clamp 2 onto the generator cover plate.

[0043] The sliding insulating track 3 includes a slide rail 31 and a slider 32. The slide rail is made of epoxy resin and is arranged along the length of the outer rod 11 of the telescopic insulating rod. The slider fits tightly against the slide rail and can slide smoothly along the slide rail with low sliding friction.

[0044] The slide rail 31 has two implementation forms. The first form is a straight epoxy resin track, which is suitable for flat cover plate scenarios. The second form is an arc-shaped epoxy resin track. The slider 32 is equipped with an angle adjustment bolt, which can be adapted to the arc-shaped generator cover plate. The angle of the slider is locked by the angle adjustment bolt, so that the slider can still maintain the flexible movement and positioning function in the horizontal direction.

[0045] The positioning take-up device 4 is connected to the slider 32 and can move horizontally along the slide rail 31 with the slider.

[0046] like Figure 5 As shown, the positioning take-up device 4 includes a housing, a winding reel, a rotating shaft, a spiral spring, and a ratchet mechanism. The winding reel is rotatably mounted inside the housing and is used to wind the high-voltage lead wire.

[0047] A scroll spring is sleeved on the outer circumference of the rotating shaft. The outer end of the scroll spring is fixedly connected to the housing, and the inner end is fixedly connected to the rotating shaft. The ratchet mechanism includes a ratchet and a pawl. The ratchet is fixedly sleeved on the rotating shaft and rotates synchronously with the rotating shaft. The pawl is connected to the housing and abuts against the tooth groove of the ratchet under the action of the elastic element.

[0048] When the high-voltage lead is pulled, the reel and shaft rotate, the scroll spring stores energy, and the ratchet rotates with the shaft, causing the pawl to slide through the tooth groove. When pulling stops, the restoring force of the scroll spring drives the shaft to reverse, and the pawl engages with the tooth groove of the ratchet to achieve one-way locking, thereby fixing the lead length. When the pawl is disengaged from the ratchet, the scroll spring releases energy to drive the shaft and reel to rotate, retracting the lead.

[0049] like Figure 6 As shown, in this embodiment, the telescopic insulating rod is clamped and fixed to the generator cover plate by U-shaped clamps at both ends. The anti-slip rubber on the inside of the U-shaped clamps increases friction, and the locking action of the screw ensures a stable clamping of the device. The telescopic insulating rod can be adjusted in length according to the cover plate and locked by a locking buckle. The slider of the sliding insulating track can drive the positioning take-up device to move horizontally, realizing the adjustment of the horizontal position of the lead wire. The positioning take-up device 4, through the cooperation of a spiral spring and a ratchet mechanism, realizes the automatic take-up and length locking of the lead wire, thereby realizing the free extension and retraction of the lead wire in the vertical direction. Through the coordinated cooperation of the above components, the length of the test lead wire is freely adjustable and the position is flexibly fixed in three-dimensional space, solving the problem of lead wire slippage and shortening the test wiring time, effectively improving test efficiency and safety.

[0050] This embodiment provides a method for arranging high-voltage test leads using a multi-dimensional adjustable high-voltage test lead arrangement device, specifically including the following steps:

[0051] Step 1: Adjusting and locking the device length

[0052] Based on the actual span dimensions of the generator cover plate at the hydropower station, the operator loosens the locking nut on the telescopic insulating rod, causing the elastic clamping part of the locking sleeve to open outwards and release the clamping state on the inner rod. Then, the inner rod is pulled out from the outer rod to a suitable length, ensuring the overall length of the telescopic insulating rod matches the span of the generator cover plate. After adjustment, the locking nut is tightened, using the conical surface to force the elastic clamping part to retract inwards and clamp the inner rod, achieving a rigid lock on the length of the telescopic insulating rod.

[0053] Step 2: Fixing and installing the device

[0054] The telescopic insulating rod, adjusted to the correct length, is placed horizontally above the generator cover plate, with the U-shaped clamps at both ends engaging the edges of the cover plate. The operator manually rotates the screw handle on the side of the U-shaped clamp, pushing the clamping block inwards, which, in conjunction with the other side of the U-shaped clamp, tightens the edge of the cover plate. During this process, the anti-slip rubber on the inside of the U-shaped clamp and the surface of the clamping block adheres tightly to the surface of the cover plate, increasing the coefficient of friction and ensuring the device remains stable and does not slip during high-voltage testing, thus completing the main fixation of the device.

[0055] Step 3: Coarse adjustment of the horizontal position of the lead wire

[0056] After the device is fixed, the operator pushes the slider at the bottom of the positioning take-up device along the sliding insulated track according to the position of the device under test. The slider moves the positioning take-up device horizontally until the lead-out position of the positioning take-up device is aligned with the horizontal projection of the device under test. If the generator cover plate has an arc-shaped structure, the tilt angle of the positioning take-up device can be adjusted by adjusting the angle adjusting bolt on the slider to keep it horizontal or in a suitable position, and the slider position can be locked to achieve precise horizontal positioning of the lead wire.

[0057] Step 4: Fine adjustment and locking of the vertical length of the lead wire

[0058] The operator pulls the high-voltage lead wire inside the positioning take-up device. The lead wire drives the winding reel and shaft to rotate, storing energy in the spiral spring. The ratchet rotates with the shaft, and the pawl slides through the tooth groove. When the lead wire length meets the test connection requirements, pulling is stopped. The restoring force of the spiral spring drives the shaft to reverse, and the pawl engages with the ratchet tooth groove to achieve one-way locking, thus fixing the lead wire length. The operator then connects the end of the lead wire to the device under test, completing the test circuit setup.

[0059] Step 5: Storage and disassembly after the test

[0060] After the test, disconnect the lead wire from the device under test. The operator moves the pawl to disengage it from the ratchet teeth, releasing the elastic potential energy of the scroll spring, which drives the shaft and reel to rotate automatically, quickly retracting the lead wire into the housing. Then, loosen the U-clamp's screw handle to release the clamp on the cover plate and remove the device. Finally, loosen the locking nut, retract the inner rod into the outer rod, and lock it in place, completing the disassembly and storage of the device.

[0061] Through the above method, the present invention realizes the standardization and process-oriented operation of high voltage test lead layout. Operators can independently complete the rapid positioning and fixing of leads in three-dimensional space, which significantly improves work efficiency and safety.

[0062] In addition, to verify the performance of the device in this embodiment, relevant tests were conducted on each component of the device.

[0063] The telescopic insulating rod 1 underwent bending strength and withstand voltage tests. Test results showed that the telescopic insulating rod has a maximum bending load of 2500N and can withstand a DC voltage of 34.5kV for 1 minute and a power frequency AC voltage of 100kV for 1 minute. Currently, the highest generator voltage level in my country's operational hydropower stations reaches 24kV. The above test data indicates that the insulation performance and mechanical strength of the telescopic insulating rod meet the requirements for generator withstand voltage tests in all currently operating hydropower stations. Furthermore, the maximum length of the telescopic insulating rod is set at 4m, which matches the maximum cover plate length of 90% of my country's current hydropower stations, demonstrating its wide applicability.

[0064] The clamping force of U-clamp 2 was tested. A 40% margin was allowed based on the overall weight of the device, meaning the target clamping force was 5 kN. Test results showed that the maximum clamping force of the U-clamp reached 6.5 kN. During the test, the device was reliably fixed to the cover plate, verifying that the U-clamp has sufficient clamping reliability and ensuring the safety of the test process.

[0065] Withstand voltage tests were conducted on the sliding insulated rail 3 and the positioning take-up device 4. Test results showed that the sliding insulated rail withstood a DC voltage of 40kV for 1 minute and a power frequency AC voltage of 110kV for 1 minute; the positioning take-up device also withstood a DC voltage of 40kV for 1 minute and a power frequency AC voltage of 110kV for 1 minute. Furthermore, the positioning take-up device was tested for its lead-out positioning function. Test results at different lead lengths showed a positioning accuracy of 100%, verifying that the positioning take-up device can achieve precise lead positioning and reliable locking.

[0066] Based on the above test data, it can be seen that the multi-dimensional adjustable high-voltage test lead arrangement device provided in this embodiment has mechanical and electrical insulation performance of each component that meets the design requirements. It can adapt to high-voltage test scenarios of generator sets of different capacities and effectively ensure the safety and reliability of test operations.

[0067] Finally, it should be noted that the above descriptions are merely preferred embodiments of the present invention and are not intended to limit the present invention. Although detailed descriptions have been provided with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the protection scope of the present invention.

Claims

1. A multi-dimensional adjustable high-voltage test lead arrangement device, characterized in that: Includes an insulating support rod, a clamping assembly, a sliding adjustment mechanism, and a take-up positioning mechanism; Clamping components are disposed at both ends of the insulating support rod for fixing the insulating support rod to an external carrier; a sliding adjustment mechanism is disposed along the length direction of the insulating support rod; a take-up positioning mechanism is mounted on the sliding adjustment mechanism and can move and be positioned along the sliding adjustment mechanism; the take-up positioning mechanism includes a housing, a winding reel rotatably disposed in the housing, and a locking component for locking the rotation of the winding reel, the winding reel being used to wind the lead wire.

2. The multi-dimensional adjustable high-voltage test lead arrangement device as described in claim 1, characterized in that: The insulating support rod is a telescopic structure, including an outer rod and an inner rod sleeved inside the outer rod. The outer rod and the inner rod are connected and locked by a locking buckle.

3. The multi-dimensional adjustable high-voltage test lead arrangement device as described in claim 2, characterized in that: The locking buckle includes a locking sleeve, an elastic clamping part, and a locking nut. The locking sleeve is fixedly connected to the end of the outer rod. The end of the outer rod is divided circumferentially to form several elastic clamping parts. The locking sleeve and the elastic clamping parts are connected by a tapered surface. The locking nut is threaded to the outer circumference of the locking sleeve. By tightening the locking nut, the elastic clamping parts are forced to contract inward and hug the inner rod.

4. The multi-dimensional adjustable high-voltage test lead arrangement device as described in claim 1, characterized in that: The clamping assembly includes a U-shaped clamp and a locking element. A screw is threaded onto one side wall of the U-shaped clamp, and a clamping block is provided at one end of the screw inside the U-shaped clamp. The other side wall of the U-shaped clamp is opposite to the clamping block. Anti-slip pads are provided on the inner side wall of the U-shaped clamp and the clamping block.

5. The multi-dimensional adjustable high-voltage test lead arrangement device as described in claim 1, characterized in that: The sliding adjustment mechanism includes a slide rail and a slider. The slide rail is fixedly installed along the length of the insulating support rod, and the slider is slidably fitted on the slide rail. The wire take-up positioning mechanism is installed on the slider.

6. The multi-dimensional adjustable high-voltage test lead arrangement device as described in claim 5, characterized in that: The slide rail is an arc track, and the slider is provided with an angle adjustment bolt for adjusting the angle of the take-up positioning mechanism.

7. The multi-dimensional adjustable high-voltage test lead arrangement device as described in claim 1, characterized in that: The locking assembly includes a rotating shaft, a scroll spring, and a ratchet mechanism; The reel is fixedly sleeved on the rotating shaft, and the spiral spring is sleeved on the outer circumference of the rotating shaft. One end of the spiral spring is connected to the housing, and the other end is connected to the rotating shaft. The ratchet mechanism includes a ratchet fixed on the rotating shaft and a pawl rotatably connected to the housing. The pawl abuts against the tooth groove of the ratchet under the action of the elastic element, thereby realizing one-way locking of the reel.

8. The multi-dimensional adjustable high-voltage test lead arrangement device as described in claim 1, characterized in that: The insulating support rod adopts a three-layer composite structure: the inner layer is a high-strength fiber structure layer, the middle layer is a Kevlar fiber structure layer, and the outer layer is an insulating varnish layer.

9. A method for arranging leads using the multi-dimensional adjustable high-voltage test lead arranging device as described in any one of claims 1-8, characterized in that, Includes the following steps: Step 1: Adjust the length of the insulating support rod according to the span dimensions of the external carrier and lock it with the locking buckle; Step 2: Fix the insulating support rod to the top of the external carrier using the clamping components at both ends; Step 3: Move the take-up positioning mechanism on the sliding adjustment mechanism and adjust it to a position that corresponds to the horizontal position of the device under test; Step 4: Pull the lead wire in the take-up positioning mechanism to the required length, lock the lead wire length using the locking component, and connect the lead wire to the device under test; Step 5: After the test, release the locking mechanism to allow the lead wire to retract automatically, and then remove the device.

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