Rail Vehicle Braking Device Product Testing Technology Research And Development Of Detection Equipment

Tread braking unit is an important part of the air brake system, directly affecting the safety of vehicles. So it needs performance test before using it to guarantee the safety.The performance test is various, the process is complex, but majority of the test-bed’s intelligent level is not high, lifting the uncertainty of the test data, and the cost is expensive, so in order to improving the test efficiency, the most important is to improve the reliability and accuracy of the test data, we need to design a set of tread braking unit test system with independent intellectual property rights to improve the degree of automation of the testing process.This project based on the working principle of the tread braking unit design the tread braking unit test-bed. The test-bed includes two parts:the host bedstand and the console. Through the console the operators can control the host bedstand to do the performance testing of the tread braking unit. Test pressure test bench adjusting range, can meet the test of various low and high pressure brake pressure regulation, this part uses the high precision closed loop pressure proportional valve, high precision pressure sensor. The control part and data acquisition system uses LabVIEW virtual instrument platform, test process operation is by using the computer, so it improves the efficiency of test system, with high precision sensor improves the test accuracy, and the test-bed is provided with multiple protective measures.This tread braking unit can realize to the different models and specifications of the tread braking unit. It can do the strength test, air tightness test of the tread braking unit’s performance testing, these tests only need the operators to use the console to control the host bedstand, greatly improving the test efficiency, by using the high precision sensor, the measurement accuracy is guaranteed.