Multichannel service performance test bench for railway vehicle tumbler node

Abstract

The invention discloses a multichannel service performance test bench for a rail vehicle tumbler node. The multichannel service performance test bench comprises a portal frame, a hydraulic actuator mounted on a cross beam of the portal frame, a loading decomposing device connected with the output end of the hydraulic actuator and used for decomposing the output power of the hydraulic actuator intodifferent loading modes, a loading system connected with different output ends of the loading decomposing device and used for loading a tumbler node in different directions, and a data acquisition system used for acquiring test data of the test bench. According to the test bench provided by the invention, a radial loading device, an axial loading device, a torsion loading device and a deflectionloading device are used for respectively carrying out radial, axial, torsion and deflection loading on the tumbler node, and the cooperative loading mode of the devices better conforms to the actual service environment of the tumbler node of the railway vehicle; and a single-direction test of a single test piece under single-direction actuation is expanded into simultaneous loading of two test pieces under single-direction actuation in four directions, so that the test loading efficiency is improved.

Description

technical field [0001] The invention relates to the technical field of vehicle engineering, in particular to a multi-channel service performance test bed of a rail vehicle jib node. Background technique [0002] A series of positioning arm nodes are the key components of rail vehicles connecting axle boxes and frames, and their performance directly affects the stability, stability and safety of trains. The dynamic performance of the swing arm node is closely related to the vibration frequency, vibration amplitude, ambient temperature and vibration period, and the external excitation, ambient temperature and service period of the train during operation are complex and changeable, so it is necessary to adjust the swing arm. Nodes are tested for service performance. [0003] The existing test methods for the performance of the boom joints are only radial or axial unidirectional tests, while the vehicle may be subjected to radial, axial, deflection, and torsion loads in multipl...

AI Technical Summary

Problems solved by technology

[0003] The existing test methods for the performance of the pivoting arm joints are only radial or axial single-direction tests, and the vehicle may be subjected to radial, axial, deflection, and torsional loads in multiple directions during actual operation. The test direction cannot meet the real operating conditions, and The unidirectional service performance test efficiency of a single specimen is low, which can no longer meet the engineering needs

At present, the service performance test of the jib node is carried out at room temperature, and the service performance and service life of the jib node in different operating environments cannot be tested.

In addition, the existing service performance test of the rotating arm node can only judge the appearance and performance of the rotating arm node after failure, and cannot monitor the dynamic performance changes and evolution rules during the service process in real time.

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