Air pressure fatigue load test method and device for train window

Abstract

The invention discloses an air pressure fatigue load test method and device for a train window. The device comprises a test piece seal cavity used for fixing and sealing a test piece, a drive mechanism used for outputting a reciprocating linear motion, a piston mechanism capable of doing the reciprocating linear motion under a drive action of the drive mechanism to change air pressure in the seal cavity, a monitoring device at least used for monitoring the air pressure in the seal cavity in real time, and a control system at least connected with the drive mechanism and the monitoring device, wherein the drive mechanism is at least used for driving the piston mechanism to do the reciprocating linear motion. The device has the characteristics of simple structure, low cost, convenience for assembly, stable control and the like, is simple to operate, and can efficiently realize a positive and negative pressure fatigue load test of train windows and train doors of a standardized motor train unit.

Description

technical field [0001] The invention particularly relates to a pneumatic fatigue load test equipment, which is mainly used in the pneumatic fatigue load test of the window or door of a standardized EMU to complete the assessment of the fatigue performance of the product. The loading frequency is between 0.5 and 6 Hz, and the pressure is between 0.5 and 6 Hz. Within ±8kpa, the number of times is more than 1.2 million times. Background technique [0002] Air pressure waves (expansion waves and compression waves) will be generated when the trains meet or pass through the tunnel. This pressure will form a pressure difference between the inside and outside of the train and continue to occur as the train runs, causing a greater impact on the train body. The entire running life of the train The train must bear the impact of millions of times of air pressure waves, and the higher the speed of the train, the greater the air pressure waves generated. In the actual driving process, th...

AI Technical Summary

Problems solved by technology

However, the core components of the test device are the servo motor and the control system. The cost of the servo motor is high, which increases the cost of the test, and the control system has a long development cycle in the early stage. Secondly, when the test device operates above 6Hz, the temperature in the cavity Too high will have a great impact on the glass and require a higher cost in the cooling system

Images