System for dynamically detecting stiffness parameters of closed-loop diagonal-bracing type vehicle bogies

Abstract

The invention relates to equipment for dynamically detecting parameters of railway vehicles, in particular to a system for dynamically detecting stiffness parameters of closed-loop diagonal-bracing type vehicle bogies. The system consists of a mechanical system, a testing system and a control system, wherein the mechanical system comprises a body vertical thrust block assembly (II), a dynamic detection table (III) for the stiffness parameters of the closed-loop diagonal-bracing type vehicle bogies, and a hoisting-type upper beam pillar (V); the dynamic detection table (III) for the stiffness parameters of the closed-loop diagonal-bracing type vehicle bogies mainly comprises a closed-loop diagonal-bracing type vertical loading gantry (A), a plane loading platform (B), an adjustable-gauge bridge approach device (C), a bogie longitudinal anti-thrust assembly (D) and a simulation corbel (F); the testing system comprises a displacement detection system (G) and a six-dimensional force sensor (c); and the control system mainly comprises a hydraulic control system, an electrical control system and a computer system. The system can perform dynamic test on the stiffness parameters of the bogies in an entire-vehicle state and an independent state.

Description

technical field [0001] The invention relates to rail vehicle parameter detection equipment, in particular to a closed-loop diagonally braced rail vehicle bogie stiffness parameter dynamic detection system. Background technique [0002] 1. The technical situation of bogie testing equipment of foreign companies [0003] Some companies in Germany and France calculated and optimized the suspension parameters of the bogie according to the route spectrum during the development of the new bogie, but this is only a theoretical calculation. After the bogie is assembled, the primary, secondary, torsion and overall Whether the suspension parameters meet the design requirements must be obtained through the parameter test bench, and appropriate corrections must be made. [0004] The Ground Transportation Technology Research Center (CSTT) affiliated to the National Research Institute of Canada (NRC) developed a special bogie characteristic parameter test bench in the 1980s, which is main...

AI Technical Summary

Problems solved by technology

In recent years, German Wind-Hoff Company, American Standard Car Truck Company (SCT) and ABC-NACO Company, as well as Canadian Bombardier Company have all conducted research on the detection technology of train bogies, put forward corresponding technical solutions and developed bogie parameters. However, in addition to the high price, these equipments cannot meet the requirements of the vehicle test and the vertical, longitudinal, lateral and rotational stiffness tests of the primary and secondary suspension devices.

[0005] 2. The technical status of domestic bogie parameter test bench

In China, whether it is a locomotive, freight car or passenger car steering frame, the selection and calculation of dynamics and the rolling vibration test of the whole vehicle are all completed in Southwest Jiaotong University during the research and development of new bogies in China. Insufficient performance in dynamic detection of parameters and low degree of automation

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