盘绕式电动推车机

主要介绍新型推车机──盘绕式电动椎车机的基本结构、工作原理及其主要性能指标。这种推车机是在电动链式推车机的基础上，添加了盘绕机构，改进了导轨槽和板链，推车行程可根据需要任意调整，能实现推车作业完全机械化，节省人工劳动，提高生产效率和安全度。

液压原理在煤矿推车机上的应用

文章通过电动推车机与液压推车机的对比,在充分肯定了液压原理的前提下,提出了相应的液压系统改造选型计算。此项技术的推广利用,提高了矿山的自动化程度,减少了维护量,节省了运行费用。

盘绕传动机构运动特性分析

通过机构运动分析揭示盘绕传动机构的运动特性 ,为正确设计盘绕传动机构提供理论依据。

Feed Drive Based upon Linear Motor for Ultraprecision Turning Machine

The characteristics of several different linear motors have been investigated, and the feed drive system with linear motor instead of screw-nut mechanism has been built for a submicro ultraprecision turning machine. In the control system for the feed drive system arranged as "T", both P-position and PI-speed control loops are used. The feedback variable is obtained from a double frequecy laser interferometor. Experiments show that the feed drive with linear motor is simple in construction, and that its dynamics is better than others. So the machining accuracy of the workpiece machined has been successfully improved.