Experimental device and method for micro-wear of connecting wire clamp conductor system

Abstract

The present invention relates to a fretting wear experimental device and method for a connecting wire clamp conductor system, comprising an experimental bench, wherein a suspension fixing unit is arranged on the experimental bench, and the suspension fixing unit is used to fix a main line and a branch line; a loading unit is also arranged on the experimental bench, and the loading unit is used to apply a tensile force to the branch line and provide a current load to the main line and the branch line; an excitation unit is also arranged on the experimental bench, and the excitation unit is used to apply an exciting force to the branch line and the wire clamp; the experimental bench is also provided with a data acquisition unit, and the data acquisition unit is used to collect experimental data under simulated working conditions of the main line, the branch line and the wire clamp. The experimental device and the experimental method can simulate the fretting wear of the wire clamp and the main line under actual working conditions, establish a characterization relationship between the fretting wear characteristics of the wire clamp and different influencing factors, reveal the influence of fretting wear on the electrical contact performance of the wire clamp-conductor system, and provide a reference for the evaluation of the wire clamp performance.

Description

Technical Field

[0001] The invention relates to the technical field of electric power test equipment, and in particular to a fretting wear test device and method for a connecting wire clamp conductor system. Background Art

[0002] In the power system, the main line and branch line are mostly fixedly installed by means of connecting wire clamps. When the connecting wire clamps are used to fix the above-mentioned wires, there are various interference factors such as tension between the wire clamps and the wires, heat generated by resistance, and vibration generated by the outside world. The above-mentioned various interference factors affect the micro-motion wear of the wire clamps and the wires, which is also an issue that needs to be paid attention to in the power system. There is no test equipment in the prior art for simulating micro-motion wear induced by breeze vibration between the connecting wire clamps and the wires in the actual installation state, and it is impossible to provide real and reliable theoretical reference data for micro-motion damage of the connecting wire clamps and the wires. Summary of the invention

[0003] The purpose of the present invention is to provide a fretting wear experimental device and method for a connecting wire clamp conductor system, which can simulate the fretting wear of the wire clamp and the main line and branch line under actual working conditions, establish a characterization relationship between the fretting wear characteristics of the wire clamp and different influencing factors, and reveal the influence of fretting wear on the electrical contact performance of the wire clamp-conductor system.

[0004] To achieve the above object, the technical solution adopted by the present invention is:

[0005] A fretting wear test device for a connecting wire clamp conductor system comprises a test bench, wherein a suspension fixing unit is arranged on the test bench, wherein the suspension fixing unit is used to fix a main line and a branch line, wherein a loading unit is also arranged on the test bench, wherein the loading unit is used to apply tension to the main line and the branch line and provide a current load to the main line and the branch line, wherein an excitation unit is also arranged on the test bench, wherein the excitation unit is used to apply an exciting force to the branch line and the wire clamp, and wherein a data acquisition unit is also arranged on the test bench, wherein the data acquisition unit is used to collect experimental data of the main line, the branch line and the wire clamp under simulated working conditions.

[0006] The present invention also has the following features:

[0007] The experimental bench is also provided with a tensioning unit, which is used to apply tension to tighten the main line.

[0008] The data acquisition unit includes a tension sensor, an acceleration sensor, a thermal imager, a micro-ohmmeter and a data acquisition and analysis system. The tension sensor is used to collect the tension data of the main line, the acceleration sensor is used to calibrate the frequency and amplitude of the wire clamp vibration, the thermal imager is used to monitor the temperature rise data of the main line, branch line and wire clamp, the micro-ohmmeter is used to measure the contact resistance data of the main line, branch line and wire clamp, and the data acquisition and analysis system is used to collect and analyze experimental data.

[0009] The suspension fixing unit comprises a tension clamp arranged on the experimental bench, one end of the main line is fixedly connected to the tension clamp, and the tensioning unit is connected to the other end of the main line.

[0010] The tensioning unit comprises a tensioning oil cylinder which is slidably arranged on the experimental bench frame, and a piston rod of the tensioning oil cylinder is connected to a tension wire clamp.

[0011] The tension sensor is arranged at the connection between the tensioning cylinder and one end of the main line, the acceleration sensor is installed on the line clamp, a vibration motor is arranged on the branch line, and a loading weight is also hung on the branch line.

[0012] A device and method for testing the fretting wear of a connecting wire clamp conductor system, the device and method for testing the fretting wear of a connecting wire clamp conductor system comprising the following steps:

[0013] The first step is the orthogonal experimental design. According to the experimental needs, the influencing factors can be designed according to the arithmetic level to obtain the orthogonal table, and the experiment can be designed based on the orthogonal table;

[0014] The second step is sample selection. Select 3 connecting fittings of the model to be tested, select the wires of appropriate specifications, cut them into the required size and strip the insulation layer at the corresponding position. Before the test, remove impurities on the surface of the wire clamp and the wire to keep the clamping area clean to prevent dust particles from affecting the test results.

[0015] The third step is to adjust the ambient temperature. Turn on the laboratory air conditioner and control the room temperature between 10℃ and 35℃.

[0016] Step 4: Wind-induced vibration induced fretting wear test of the connecting wire clamp and conductor system;

[0017] The fifth step is to analyze the experimental data and evaluate the performance of the wire clamp. The data measured during the experiment can be used to obtain the change trend of the contact resistance and temperature rise of the wire clamp-conductor system, which provides a reference for the evaluation of the performance of the wire clamp. By changing the test parameters and orthogonal experiments, the influence of each parameter on the electrical contact performance of the wire clamp and the conductor system can be obtained.

[0018] Step 6. After the experiment, the wire clamp samples can be analyzed and tested through relevant instruments to obtain a relatively complete wear characteristic and wear mechanism of the wire clamp, including the amount of wear of the wire clamp, the surface morphology characteristics, oxidation, corrosion degree and composition analysis of the wire clamp, as well as the analysis and measurement of the morphology and composition of wear particles. Combined with the evolution law of contact resistance under various factors, a scientific method to solve the electrical contact problem caused by micro-wear can be finally obtained.

[0019] The fourth step includes the following experimental steps:

[0020] Sample installation: tension the main line and clamp it with a wire clamping device. The wire clamping device can use a corresponding type of tension wire clamp. After the main line is clamped, connect the wire clamping device to the tensioning cylinder through a tension sensor. Set the wire tension on the host computer. The host computer issues a command to drive the oil pump motor to replenish fluid through the controller, and tension the main line through the tensioning cylinder. The tension sensor calibrates the tension and feeds back the tension data to the host computer. After the tension is set, the tensioning device can keep the system in a constant tension state. When the cylinder reaches the rated tension, the oil pump motor is powered off; when the system pressure is lower than the set value, the oil pump motor automatically starts to realize the replenishment function. After the main line is installed, connect the branch line to the main line with the splicing wire clamp to be tested. The branch line is in a bent and suspended state. Use a torque wrench to tighten the bolts on the splicing wire clamp to the torque required for the experiment;

[0021] Experimental load setting: The hanging part of the branch line is connected with a weight, and different degrees of tension can be applied to the branch line by increasing or decreasing the mass of the weight. The end of the branch line and the end of the main line on the other side of the wire clamp are connected to the current generator, and the alternating current generated by the current generator provides various levels of current load for the experiment;

[0022] Wear frequency, number of cycles and vibration amplitude setting: The excitation system uses a vibration motor to provide excitation force for the wire clamp-conductor system. The vibration motor is fixedly connected to the branch line or main line through a clamp, and is close to the connecting wire clamp-conductor system to excite it to vibrate. The vibration motor is replaceable, and the speed and excitation force are adjustable. The vibration amplitude and wear frequency of the connecting wire clamp-conductor system are adjusted by adjusting the speed and excitation force of the vibration motor to meet the experimental requirements. The vibration frequency and amplitude are calibrated by the acceleration sensor, which is installed on the connecting wire clamp. The corresponding experimental time is set according to the motor speed and the number of cycles required for the experiment;

[0023] Acquisition of contact resistance value: Contact resistance is an important parameter index to measure the electrical contact performance of electrical contact components. The contact resistance of the splicing wire clamp-conductor system is measured by a micro-ohmmeter. The measured contact resistance data is uploaded to the host computer and analyzed and processed to obtain the change curve of the contact resistance during the experiment of the wire clamp and conductor system. The micro-ohmmeter adopts the Kelvin four-wire detection method to obtain a more accurate contact resistance value. The distance between the measuring point and the end of the measured hardware is 25mm. The resistance measurement should be carried out at a stable ambient temperature between 15℃ and 30℃. The measured resistance is the DC resistance. The distance between the current introduction point and the electrical splicing hardware should be greater than 50 times the wire diameter, and it should be effectively connected with all the strands of the wire. The instrument error of the micro-ohmmeter used is not more than 0.5µΩ.

[0024] Acquisition of temperature distribution of the wire clamp-conductor system: A thermal imager is used to obtain the temperature distribution of the splicing wire clamp-conductor system, monitor and record the temperature rise changes during the experiment, and upload the temperature data to the host computer. The host computer is set with a high temperature alarm threshold. When the temperature of the wire clamp-conductor system exceeds the alarm threshold, the high temperature alarm light sounds an alarm to prevent danger;

[0025] After setting the above parameters, check that each experimental device is connected reliably and start the experiment. This experimental device can conduct three sets of experiments with different experimental parameters at the same time to improve the experimental efficiency.

[0026] After the experiment runs to the specified number of cycles, the load is stopped, the experimental instrument is turned off, the experimental equipment is dismantled, and the test specimens are obtained for subsequent analysis and observation.

[0027] Compared with the prior art, the beneficial effects of the present invention are embodied in that: the experimental device simulates the fretting wear of the wire clamp and the conductor under actual working conditions, fixes the main line and the branch line through a hanging fixing unit, applies tension to the branch line and provides current load to the main line and the branch line through a loading unit, applies exciting force to the branch line and the wire clamp through an excitation unit, and collects experimental data of the main line, branch line and wire clamp under simulated working conditions through a data acquisition unit, thereby obtaining status data of the main line, branch line and wire clamp under actual working conditions. Therefore, the experimental device can simulate the fretting wear of the wire clamp and the main line under actual working conditions, obtain the influence of fretting wear on the electrical contact performance of the wire clamp-conductor system, obtain wear samples under different influencing factors for subsequent analysis and observation, and provide a reference for the evaluation of wire clamp performance. BRIEF DESCRIPTION OF THE DRAWINGS

[0028] Figure 1 and Figure 2 It is a schematic diagram of the structure of the fretting wear experimental device of the splice clamp conductor system from two perspectives;

[0029] Figure 3 It is a schematic diagram of the principle of the fretting wear experimental device for the connecting wire clamp conductor system;

[0030] Figure 4 and Figure 5 It is the principle block diagram of the data acquisition and analysis module in the micro-motion wear experimental method of the splice clamp conductor system. DETAILED DESCRIPTION

[0031] Combination Figures 1 to 5 The micro-motion wear test device of the connecting wire clamp conductor system of the present invention is further described as follows:

[0032] A fretting wear test device for a connecting wire clamp conductor system comprises a test bench 100, on which a suspension fixing unit is provided, and the suspension fixing unit is used to fix a main line a and a branch line b. The test bench 100 is also provided with a loading unit, and the loading unit is used to apply tension to the branch line b and provide a current load to the main line a and the branch line b. The test bench 100 is also provided with an excitation unit, and the excitation unit is used to apply an exciting force to the branch line b and the wire clamp c. The test bench 100 is also provided with a data acquisition unit, and the data acquisition unit is used to collect experimental data of the main line a, the branch line b and the wire clamp c under simulated working conditions.

[0033] When the experimental device simulates the state of the wire clamp and the conductor under actual working conditions, the main line a and the branch line b are fixed by the hanging fixing unit, the tension is applied to the branch line b and the current load is provided to the main line a and the branch line b by the loading unit, the exciting force is applied to the branch line and the wire clamp by the excitation unit, and the experimental data of the main line a, the branch line b and the wire clamp c under the simulated working conditions are collected by the data acquisition unit, and then the state data of the main line a, the branch line b and the wire clamp c under the actual working conditions can be obtained. Therefore, the experimental device can simulate the actual working conditions of the wire clamp c and the main line a, and detect the actual installation status of the conductor and the wire clamp c.

[0034] Specifically, a tensioning unit is further provided on the experimental bench 100, and the tensioning unit is used to apply tension to tighten the main line a.

[0035] More specifically, the data acquisition unit includes a tension sensor 200, an acceleration sensor 300, a thermal imager 400, a micro-ohmmeter 500 and a data acquisition and analysis system. The tension sensor 200 is used to collect tension data of the main line a, the acceleration sensor 300 is used to calibrate the frequency and amplitude of vibration of the wire clamp c, the thermal imager 400 is used to monitor the temperature rise data of the main line a, the branch line b and the wire clamp c, the micro-ohmmeter 500 is used to measure the contact resistance data of the main line a, the branch line b and the wire clamp c, and the data acquisition and analysis system is used to collect and analyze experimental data.

[0036] The suspension fixing unit includes a tension clamp 110 disposed on the experimental bench 100 , one end of the main line a is fixedly connected to the tension clamp 110 , and the tensioning unit is connected to the other end of the main line a.

[0037] When the main line a is tightened, the tensioning unit includes a tensioning cylinder 140 slidably disposed on the experimental bench 100 , and a piston rod of the tensioning cylinder 140 is connected to the tension clamp 110 .

[0038] The tension sensor 200 is arranged at the connection between the piston rod of the tensioning cylinder 140 and one end of the main line a, the acceleration sensor 300 is installed on the wire clamp c, a vibration motor 600 is arranged on the branch line b, and a loading weight 700 is also hung on the branch line b.

[0039] A device and method for testing the fretting wear of a connecting wire clamp conductor system, the device and method for testing the fretting wear of a connecting wire clamp conductor system comprising the following steps:

[0040] The first step is the orthogonal experimental design. According to the experimental needs, the influencing factors can be designed according to the arithmetic level to obtain the orthogonal table, and the experiment can be designed based on the orthogonal table;

[0041] The second step is sample selection. Select 3 connecting fittings of the model to be tested, select the wires of appropriate specifications, cut them into the required size and strip the insulation layer at the corresponding position. Before the test, remove impurities on the surface of the wire clamp and the wire to keep the clamping area clean to prevent dust particles from affecting the test results.

[0042] The third step is to adjust the ambient temperature. Turn on the laboratory air conditioner and control the room temperature between 10℃ and 35℃.

[0043] Step 4: Wind-induced vibration induced fretting wear test of the connecting wire clamp and conductor system;

[0044] The fifth step is to analyze the experimental data and evaluate the performance of the wire clamp. The data measured during the experiment can be used to obtain the change trend of the contact resistance and temperature rise of the wire clamp-conductor system, which provides a reference for the evaluation of the performance of the wire clamp. By changing the test parameters and orthogonal experiments, the influence of each parameter on the electrical contact performance of the wire clamp and the conductor system can be obtained.

[0045] Step 6. After the experiment, the wire clamp samples can be analyzed and tested through relevant instruments to obtain a relatively complete wear characteristic and wear mechanism of the wire clamp, including the amount of wear of the wire clamp, the surface morphology characteristics, oxidation, corrosion degree and composition analysis of the wire clamp, as well as the analysis and measurement of the morphology and composition of wear particles. Combined with the evolution law of contact resistance under various factors, a scientific method to solve the electrical contact problem caused by micro-wear can be finally obtained.

[0046] The fourth step includes the following experimental steps:

[0047] Sample installation: tension the main line and clamp it with a wire clamping device. The wire clamping device can use a tension wire clamp of the corresponding model. After the main line is clamped, connect the wire clamping device to the tensioning cylinder 140 through a tension sensor. Set the wire tension on the host computer. The host computer issues a command to drive the oil pump motor to replenish fluid through the controller, and tension the main line through the tensioning cylinder 140. The tension sensor calibrates the tension and feeds back the tension data to the host computer. After the tension is set, the tensioning device can keep the system in a constant tension state. When the cylinder reaches the rated tension, the oil pump motor is powered off; when the system pressure is lower than the set value, the oil pump motor automatically starts to realize the replenishment function. After the main line is installed, connect the branch line to the main line with the splicing wire clamp to be tested. The branch line is in a bent and suspended state and loaded with weights to simulate the complex conditions of the actual work of the branch line. Appropriate loading can be used to carry out accelerated wear experiments on the wire clamps. Use a torque wrench to tighten the bolts on the splicing wire clamps to the torque required for the experiment.

[0048] Experimental load setting: The hanging part of the branch line is connected with a weight, and different degrees of tension can be applied to the branch line by increasing or decreasing the mass of the weight. The end of the branch line and the end of the main line on the other side of the wire clamp are connected to the current generator, and the alternating current generated by the current generator provides various levels of current load for the experiment;

[0049] Wear frequency, number of cycles and vibration amplitude setting: The excitation system uses a vibration motor to provide excitation force for the wire clamp-conductor system. The vibration motor is fixedly connected to the branch line or main line through a clamp, and is close to the connecting wire clamp-conductor system to excite it to vibrate. The vibration motor is replaceable, and the speed and excitation force are adjustable. The vibration amplitude and wear frequency of the connecting wire clamp-conductor system are adjusted by adjusting the speed and excitation force of the vibration motor to meet the experimental requirements. The vibration frequency and amplitude are calibrated by the acceleration sensor, which is installed on the connecting wire clamp. The corresponding experimental time is set according to the motor speed and the number of cycles required for the experiment;

[0050] Acquisition of contact resistance value: Contact resistance is an important parameter index to measure the electrical contact performance of electrical contact components. The contact resistance of the splicing wire clamp-conductor system is measured by a micro-ohmmeter. The measured contact resistance data is uploaded to the host computer and analyzed and processed to obtain the change curve of the contact resistance during the experiment of the wire clamp and conductor system. The micro-ohmmeter adopts the Kelvin four-wire detection method to obtain a more accurate contact resistance value. The distance between the measuring point and the end of the measured hardware is 25mm. The resistance measurement should be carried out at a stable ambient temperature between 15℃ and 30℃. The measured resistance is the DC resistance. The distance between the current introduction point and the electrical splicing hardware should be greater than 50 times the wire diameter, and it should be effectively connected with all the strands of the wire. The instrument error of the micro-ohmmeter used is not more than 0.5µΩ.

[0051] Acquisition of temperature distribution of the wire clamp-conductor system: A thermal imager is used to obtain the temperature distribution of the splicing wire clamp-conductor system, monitor and record the temperature rise changes during the experiment, and upload the temperature data to the host computer. The host computer is set with a high temperature alarm threshold. When the temperature of the wire clamp-conductor system exceeds the alarm threshold, the high temperature alarm light sounds an alarm to prevent danger;

[0052] After setting the above parameters, check that each experimental device is connected reliably and start the experiment. This experimental device can conduct three sets of experiments with different experimental parameters at the same time to improve the experimental efficiency.

[0053] After the experiment runs to the specified number of cycles, the load is stopped, the experimental instrument is turned off, the experimental equipment is dismantled, and the test specimens are obtained for subsequent analysis and observation.

[0054] It will be apparent to those skilled in the art that the invention is not limited to the details of the exemplary embodiments described above and that the invention can be implemented in other specific forms without departing from the spirit or essential features of the invention. Therefore, the embodiments should be considered exemplary and non-limiting in all respects, and the scope of the invention is defined by the appended claims rather than the foregoing description, and it is intended that all variations falling within the meaning and scope of the equivalent elements of the claims be included in the invention. Any reference numeral in a claim should not be considered as limiting the claim to which it relates.

[0055] In addition, it should be understood that although the present specification is described according to implementation modes, not every implementation mode contains only one independent technical solution. This description of the specification is only for the sake of clarity. Those skilled in the art should regard the specification as a whole. The technical solutions in each embodiment may also be appropriately combined to form other implementation modes that can be understood by those skilled in the art.

Claims

1. A fretting wear test device for a connecting wire clamp conductor system, characterized in that: The experimental bench (100) comprises a suspension fixing unit provided on the experimental bench (100), the suspension fixing unit being used to fix the main line (a), the loading unit being used to apply tension to the main line (a) and the branch line (b) and to provide current load to the main line (a) and the branch line (b), the excitation unit being used to apply an exciting force to the main line (a), the branch line (b) and the wire clamp (c), and the data acquisition unit being used to acquire experimental data of the main line (a), the branch line (b) and the wire clamp (c) under simulated working conditions; And the experimental data are as follows: The following steps are involved: The first step is the orthogonal experimental design. According to the experimental needs, the influencing factors can be designed according to the arithmetic level to obtain the orthogonal table, and the experiment can be designed based on the orthogonal table; The second step is sample selection. Select 3 connecting fittings of the model to be tested, select the wires of appropriate specifications, cut them into the required size and strip the insulation layer at the corresponding position. Before the test, remove impurities on the surface of the wire clamp and the wire to keep the clamping area clean to prevent dust particles from affecting the test results. The third step is to adjust the ambient temperature. Turn on the laboratory air conditioner and control the room temperature between 10℃ and 35℃. Step 4: Wind-induced vibration induced fretting wear test of the connecting wire clamp and conductor system; The fifth step is to analyze the experimental data and evaluate the performance of the wire clamp. The data measured during the experiment can be used to obtain the change trend of the contact resistance and temperature rise of the wire clamp-conductor system, which provides a reference for the evaluation of the performance of the wire clamp. By changing the test parameters and orthogonal experiments, the influence of each parameter on the electrical contact performance of the wire clamp and the conductor system can be obtained. Step 6. After the experiment, the wire clamp samples can be analyzed and tested by relevant instruments to obtain relatively complete wear characteristics and wear mechanisms of the wire clamp, including the wear amount of the wire clamp, the surface morphology characteristics, oxidation, corrosion degree and composition analysis of the wire clamp, as well as the analysis and measurement of the morphology and composition of wear particles. Combined with the evolution law of contact resistance under various factors, a scientific method to solve the electrical contact problem caused by fretting wear can be finally obtained; The fourth step includes the following experimental steps: Sample installation: tension the main line and clamp it with a wire clamping device. The wire clamping device can use a corresponding type of tension wire clamp. Then tension the main line through the tensioning system. Calibrate the tension through the tension sensor to adjust the conductor tension to the predetermined value set in the experiment. After the main line is installed, connect the branch line to the main line with the test splice clamp. The branch line is in a bent and suspended state and loaded with weights to simulate the complex conditions of the actual operation of the branch line. Appropriate loading can be used to carry out accelerated wear experiments on the wire clamps. Use a torque wrench to tighten the bolts on the splice clamps to the torque required for the experiment. Experimental load setting: The hanging part of the branch line is connected with a weight, and different degrees of tension can be applied to the branch line by increasing or decreasing the mass of the weight. The end of the branch line and the end of the main line on the other side of the wire clamp are connected to the current generator, and the alternating current generated by the current generator provides various levels of current load for the experiment; Wear frequency, number of cycles and vibration amplitude setting: The excitation system uses a vibration motor to provide excitation force for the wire clamp-conductor system. The vibration motor is fixedly connected to the branch line or main line through a clamp, and is close to the connecting wire clamp-conductor system to excite it to vibrate. The vibration motor is replaceable, and the speed and excitation force are adjustable. The vibration amplitude and wear frequency of the connecting wire clamp-conductor system are adjusted by adjusting the speed and excitation force of the vibration motor to meet the experimental requirements. The vibration frequency and amplitude are calibrated by the acceleration sensor, which is installed on the connecting wire clamp. The corresponding experimental time is set according to the motor speed and the number of cycles required for the experiment; Acquisition of contact resistance value: Contact resistance is an important parameter index to measure the electrical contact performance of electrical contact components. The contact resistance of the splicing wire clamp-conductor system is measured by a micro-ohmmeter. The measured contact resistance data is uploaded to the host computer and analyzed and processed to obtain the change curve of the contact resistance during the experiment of the wire clamp and conductor system. The micro-ohmmeter adopts the Kelvin four-wire detection method to obtain a more accurate contact resistance value. The distance between the measuring point and the end of the measured hardware is 25mm. The resistance measurement should be carried out at a stable ambient temperature between 15℃ and 30℃. The measured resistance is the DC resistance. The distance between the current introduction point and the electrical splicing hardware should be greater than 50 times the wire diameter, and it should be effectively connected with all the strands of the wire. The instrument error of the micro-ohmmeter used is not more than 0.5µΩ. Acquisition of temperature distribution of the wire clamp-conductor system: A thermal imager is used to obtain the temperature distribution of the splicing wire clamp-conductor system, monitor and record the temperature rise changes during the experiment, and upload the temperature data to the host computer. The host computer is set with a high temperature alarm threshold. When the temperature of the wire clamp-conductor system exceeds the alarm threshold, the high temperature alarm light sounds an alarm to prevent danger; After setting the above parameters, check that each experimental device is connected reliably and start the experiment. This experimental device can conduct three sets of experiments with different experimental parameters at the same time to improve the experimental efficiency. After the experiment runs to the specified number of cycles, the load is stopped, the experimental instrument is turned off, the experimental equipment is dismantled, and the test specimens are obtained for subsequent analysis and observation.

2. The fretting wear test device for the connecting wire clamp conductor system according to claim 1 is characterized in that: The experimental bench (100) is also provided with a tensioning unit, which is used to apply tension to tighten the main line (a).

3. The fretting wear test device for the connecting wire clamp conductor system according to claim 2 is characterized in that: The data acquisition unit comprises a tension sensor (200), an acceleration sensor (300), a thermal imager (400), a micro-ohmmeter (500) and a data acquisition and analysis system, wherein the tension sensor (200) is used to acquire tension data of a main line (a), the acceleration sensor (300) is used to calibrate the frequency and amplitude of vibration of a wire clamp (c), the thermal imager (400) is used to monitor temperature rise data of the main line (a), the branch line (b) and the wire clamp (c), the micro-ohmmeter (500) is used to measure contact resistance data of the main line (a), the branch line (b) and the wire clamp (c), and the data acquisition and analysis system is used to acquire and analyze experimental data.

4. The fretting wear test device for the connecting wire clamp conductor system according to claim 3 is characterized in that: The suspension fixing unit comprises a tension clamp (110) arranged on the experimental bench (100), one end of the main line (a) is fixedly connected to the tension clamp (110), and the tensioning unit is connected to the other end of the main line (a).

5. The fretting wear test device for the connecting wire clamp conductor system according to claim 4 is characterized in that: The tensioning unit comprises a tensioning oil cylinder (140) slidably arranged on the experimental bench (100), and a piston rod of the tensioning oil cylinder (140) is connected to the tensioning wire clamp (110).

6. The fretting wear test device for the connecting wire clamp conductor system according to claim 5 is characterized in that: The tension sensor (200) is arranged at the connection between the tensioning oil cylinder (140) and one end of the main line (a), and the acceleration sensor (300) is installed on the wire clamp (c).

7. The fretting wear test device for the connecting wire clamp conductor system according to claim 6 is characterized in that: The branch line (b) is provided with a vibration motor (600).

8. The fretting wear test device for the connecting wire clamp conductor system according to claim 7 is characterized in that: A loading weight (700) is also suspended on the branch line (b).

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