Transmission characteristics of heavy axle cross shaft-gear rotating pair
In order to solve the problem that the axle product cross shaft-gear rotation pair was easy to wear with the increase of vehicle mileage,this study started from the transmission characteristics of the cross shaft-gear rotation pair,based on Ackerman condition,differential cross shaft-planetary gear relative speed and the theoretical torque calculation model of heavy-duty vehicle were established.The Hertz contact model of the cross shaft-gear was established based on the theoretical torque.The influence of curvature changes caused by local and uniform wear on the Hertz contact stress on the surface of the cross shaft was analyzed in MATLAB.The results showed that in the entire Hertz contact area,the Hertz contact stress distribution was more concentrated under uniform wear,increasing the possibility of further wear of the shaft;Under local wear,the Hertz contact distribution was more uniform.
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