With the increase of the speed and load of heavy duty truck,the performance of coupler is more de-manding,and and it is necessary to obtain the actual load spectrum of coupler in longitudinal,transverse and vertical directions.However,the traditional monitoring technology can not meet the requirements,so this paper proposes a multi-load decoupling temperature self-compensation full bridge measurement technology.Through establishing a theoretical model,arranging strain arrays and designing bridge groups,accurate measurement and zero drift compen-sation of strain on each hook surface are achieved,and finally the effectiveness of the technology is verified through experiments.This measurement technology provides a scientific means for monitoring the coupler load of rail ve-hicles.
维普
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