### Maintenance of Mechanical Transmission System for Charging Pile Cable Tension Torsion Bending Life Tester

In the research and development and production of modern electric vehicle charging facilities, the quality and durability of charging pile cables are crucial. To ensure that the cables can withstand various mechanical challenges in practical applications, the charging pile cable tension torsion bending life tester has become an indispensable testing equipment. This equipment evaluates the service life and reliability of the cable by simulating the combined stress of tension, torsion, and bending that the cable may be subjected to during long-term use. As the core component of the testing machine, the performance and stability of the mechanical transmission system are directly related to the accuracy of the test results and the long-term operating efficiency of the equipment. Therefore, the maintenance of the mechanical transmission system is particularly important.

#### I. Overview of Mechanical Transmission System

The mechanical transmission system of the charging pile cable tension torsion bending life tester is mainly composed of a motor, reducer, transmission shaft, coupling, guiding mechanism, and fixture. The motor provides the power source, reduces the speed and increases the torque through the reducer, the transmission shaft and coupling ensure the efficient transmission of power, the guiding mechanism is responsible for guiding the cable to move along a predetermined trajectory, and the fixture is used to fix both ends of the cable to realize tensile, torsion, and swing tests. The precise cooperation of this series of components is the basis for achieving high-precision and high-stability testing.

#### II. Importance of Daily Maintenance

Daily maintenance is the key to maintaining the efficient operation of the mechanical transmission system. Regular inspection and maintenance can detect and eliminate potential faults in time, avoid major faults caused by the accumulation of small problems, thereby extending the service life of the equipment, reducing downtime, and improving testing efficiency. Neglecting maintenance may lead to increased wear of transmission components, increased noise, decreased accuracy, and even serious accidents.

#### III. Specific Maintenance Measures

1. **Cleaning and Lubrication**

Regularly clean the dust and oil stains on the surface of the transmission system, especially the motor fan, reducer vent, and other parts that are prone to dust accumulation, to prevent blockage and affect heat dissipation. Use appropriate lubricant to lubricate the friction parts such as bearings and gears to reduce wear and improve transmission efficiency. Note that the selection of lubricants must meet the equipment requirements, and avoid mixing different types of lubricants.

2. **Fastener Inspection**

Regularly check whether the bolts, nuts and other fasteners in the transmission system are loose, especially the key positions such as the motor base, reducer mounting base, and transmission shaft connection. Loose fasteners will lead to increased vibration, affect the test accuracy, and even cause component damage.

3. **Transmission Component Wear Inspection**

Regularly check the wear of parts such as transmission shafts, gears, and bearings. Slight wear can be solved by adjusting or replacing parts; serious wear requires a comprehensive assessment of the transmission system status, and overhaul or replacement of the entire transmission assembly is necessary to prevent the expansion of the fault.

4. **Electrical Connection Inspection**

Check whether the wiring of electrical components such as motors and sensors is firm, and whether there is any damage or aging. Ensure good electrical connection to avoid problems such as motor overheating and signal distortion caused by poor contact.

5. **Software Calibration and Function Test**

Perform software calibration regularly to ensure the accuracy of test data. By running the preset function test program, check whether the response speed, positioning accuracy, and protection function of the transmission system are normal, and find and repair software or hardware faults in time.

#### IV. Preventive Maintenance Plan

Develop and implement a preventive maintenance plan, and set reasonable maintenance cycles and contents according to the equipment usage frequency, working environment, and historical failure records. The plan should include multiple levels such as daily maintenance, quarterly inspection, and annual overhaul to ensure comprehensive maintenance of the transmission system. At the same time, establish maintenance record files, record the time, content, problems found, and solutions of each maintenance in detail, and provide reference for subsequent maintenance.

#### V. Conclusion

The maintenance of the mechanical transmission system of the charging pile cable tension torsion bending life tester is a systematic project, which requires everything from daily cleaning and lubrication to regular comprehensive inspection, and then to the formulation and implementation of a preventive maintenance plan. Each link is indispensable. Through scientific and reasonable maintenance, it can not only ensure the stable operation of the equipment and improve the test accuracy, but also effectively reduce maintenance costs, extend the service life of the equipment, and provide solid technical support for the quality control of charging pile cables. Enterprises should pay attention to and invest resources in the maintenance of the transmission system to adapt to the rapid development of the electric vehicle industry and ensure the safety and reliability of charging facilities.