动力转向器的力特性曲线分析与应用

Analysis and Application of the Force Characteristic Curve of Power Steering Gear

在动力转向器的性能检测中,力特性曲线是最重要的一个项目。性能测试中常会遇到力特性曲线不平滑、曲线扭力值达不到设计要求、曲线对称度差等问题。对其进行的分析表明,力特性曲线不平滑是由于扭力突变引起的,曲线对称度差一般是由阀芯阀套槽口的均分性质量及调阀打销的不准确性引起的。

Force characteristic curve is the most important item in power steering gear performance measurement. Such problems as unsmooth force characteristic curve,output torque under the design requirements and bad symmetric degree,etc.,commonly occur in performance measurement.It is shown by analysis that unsmoothness of the force characteristic curve results from abrupt changing of torque,and bad symmetric degree of the curve commonly from the non-uniformity of the slot opening of the input shaft and valve sleeve and errors of the pin of the adjusting valve.