Solution to Abnormal Loading and Data Deviation of Charging Gun Vehicle Rolling Test Machine

　　Charging gun vehicle rolling test machineIt is a key equipment for verifying the anti rolling performance of charging guns, and the accuracy of its test results directly affects product quality and safety. However, in actual operation, loading exceptions and data deviation issues are quite common and need to be addressed through systematic troubleshooting and targeted measures.

Abnormal loading is mainly manifested as pressure fluctuations, insufficient load, or overload. When a hydraulic or pneumatic system malfunctions, the loading pressure may be unstable. If the hydraulic oil is not replaced for a long time and impurities are mixed in, it will cause the valve core to become stuck, and the pressure supply capacity of the pump station will decrease after wear, resulting in the pressure not reaching the set value or sudden unloading. At this time, it is necessary to replace the cleaning oil and clean the filter. If the pump station is severely worn, it should be repaired or replaced in a timely manner. For pneumatic systems, unstable air pressure or aging and leaking cylinder seals can also affect the loading effect. It is necessary to check the air pipe connection and replace the aging sealing ring or cylinder. Loading the actuator can also affect the loading process. If the loading head is not calibrated for levelness or the guide rail lubrication is insufficient, it can cause excessive impact or uneven pressure distribution when contacting the charging gun. This can be solved by calibrating the loading head with a level and regularly lubricating the guide rail. In addition, incorrect parameter settings in the control system can also cause abnormalities, such as setting pressure that does not match the actual loading value. The pressure sensor needs to be recalibrated, and the calibration coefficient and linear compensation parameters of the control system need to be corrected.

The issue of data bias cannot be ignored either. Sensor failure or drift is a common cause. If the sensitivity of the pressure sensor decreases after long-term use, or if the wire or grating ruler of the displacement sensor is contaminated, it will cause continuous deviation between the data and the actual value. The sensor can be calibrated using a standard pressure source and replaced promptly if there is a significant deviation; The displacement sensor needs to clean the contact surface to avoid dust affecting the measurement accuracy. Interference from the data acquisition system can also cause data anomalies. If the sensor signal line is not routed separately from the power cable, electromagnetic interference can cause signal distortion. If the sampling frequency of the acquisition card is too low, it can lead to data curve spikes or jumps. The signal line should be shielded and kept away from interference sources, and the acquisition card should be upgraded to increase the sampling frequency. Loose or worn mechanical structures can also lead to data deviation. After multiple tests, loose bolts or worn bearings of the loading mechanism can cause the loading head to sink, affecting data accuracy. Regular inspections and tightening of bolts are necessary, and worn bearings or guide rail sliders should be replaced.

To avoid the occurrence of problems,Charging gun vehicle rolling test machineDaily maintenance is crucial. Pressure and displacement sensors should be calibrated regularly to ensure basic accuracy; Place the testing machine in an environment with suitable temperature and humidity to avoid high temperature and humidity affecting electronic components; Strictly check the levelness of the sample installation during operation, avoid overloading, and reduce frequent starting and stopping of the equipment. Through the above methods, the problems of abnormal loading and data deviation can be effectively solved, ensuring the stable operation of the testing machine and providing reliable data for the anti rolling performance testing of the charging gun.