A speed-increasing railway passenger car bogie airtightness testing system and method

Abstract

The invention relates to an acceleration railway passenger train bogie air tightness testing system. The acceleration railway passenger train bogie air tightness testing system comprises a suspender screw, a swing bolster, air springs, a spring tray, a stop valve, a differential valve and an altitude valve, the swing bolster is located above the spring tray, the air spring is located between the swing bolster and the spring tray, the differential valve is connected between the air springs, the altitude valve is communicated with the air springs, a baffle and a nut are connected to the suspender screw, the swing bolster and the spring tray are both located between the baffle and the nut, the suspender screw penetrates through the spring tray to be movably connected with the spring tray, and the stop valve, the altitude valve and the air springs are sequentially communicated. An air tightness testing method mainly includes the steps of testing system assembling, air inflation, pressure maintaining testing and air tightness judging. According to the acceleration railway passenger train bogie air tightness testing system and method, the bogie air tightness can be tested before bogies are assembled in batch, repairing work caused by disqualified air tightness after the bogies are completely assembled is avoided, and the testing cost of the bogies is greatly reduced.

Description

technical field [0001] The invention relates to the technical field of speed-increasing railway passenger car bogie testing technology, in particular to a speed-increasing railway passenger car bogie airtightness testing system and method. Background technique [0002] The existing bogies of speed-increasing passenger cars all use air springs as shock absorbing units. When carrying out factory repairs and section repairs on bogies, it is necessary to conduct airtightness tests on the air springs and the airtight piping systems of their accessories. , to ensure that during normal operation of the bus, there will be no poor shock absorption due to leakage of the air spring or air-tight pipeline system, which will reduce the operating quality of the bus. [0003] The airtightness test of the existing speed-increasing railway passenger car bogie is carried out after the bogie is assembled. The valve is used to adjust and maintain the height of the bogie. As the force on the bog...

AI Technical Summary

Problems solved by technology

Since the existing air tightness test method requires special testing equipment, and the pressure provided by the testing equipment can reach 400KN, therefore, the requirements for the testing equipment are relatively high. In addition, when the gas pressure in the air spring reaches the air tightness testing standard of 0.6 MPa, the actual force of the bogie will reach 300KN, which is about twice its normal load, which will obviously have an adverse effect on the strength of the bogie; at the same time, the special test equipment is expensive, and it is not conducive to the airtightness of the bogie. Reduced testing costs

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