新型指南车设计及样车功能实测

DESIGN OF AN INNOVATIVE SOUTH-POINTING CHARIOT AND PROTOTYPE FUNCTIONS TESTING

本文首先对定轴式指南车和差动式指南车进行了比较分析,发现定轴式指南车虽受限于平面直行和平面定点转弯,但在直行越障方面有一定优势;差动式指南车在平面内可以任意行驶或者转弯,只是在直行越障方面存在明显缺陷。接着综合两种指南车方案的优点,以差动式指南车为蓝本,辅之以定轴式指南车自动离合装置的理念,设计目标是解决差动式指南车固有的直行越障缺陷。然后本文设计了一款牙嵌式离合器,用于不同工况下指南机构的离合控制;并基于牙嵌式离合器完成了新型指南车的外形尺寸和内部机构零件的设计方案。进而通过新型指南车的三维实体建模实施指南车的运动机构仿真。最后完成了样车的制备和功能测试,试验结果表明样车的越障和转弯等工况下指南性能均达到预期。

The fixed-axle south-pointing chariot and the differential-type south-pointing chariot were compared and analyzed in this article.And it is found that although the fixed-axle south-pointing chariot is limited to plane straight and plane fixed-point turning,it has certain advantages in straight-driving over obstacle;the differential-type south-pointing chariot can drive or turn arbitrarily in the plane,it has obvious disadvantages in straight-driving over obstacle.Then combining the advantages of the two solutions of southpointing chariot,based on the differential-type south-pointing chariot,supplemented by the concept on automatic clutch device from the fixed-axis south-pointing chariot,the design goal is to solve the inherent defect on straight-driving over obstacle from the differential-type south-pointing chariot.Afterwards a tooth-mounted clutch was designed for the control of the south-pointing mechanism under different working conditions in this article;and the design scheme of the external dimensions and internal mechanism parts of the innovative southpointing chariot was completed based on the tooth-mounted clutch.Furthermore,the motion mechanism simulation of south-pointing chariot was completed through the three-dimensional modeling of the innovative south-pointing chariot.Finally,the preparation and functional testing of the prototype vehicle were completed;and the results show that the performance on south-pointing from the prototype vehicle satisfies the expectation under those working conditions.