毕业论文-电牵引采煤机牵引部电气控制系统设计.docVIP

摘要 采煤机是实现煤矿生产机械化和现代化的重要设备之一。采煤机牵引技术的发展由链牵引到无链牵引,进而由液压牵引发展到电牵引。由于电牵引采煤机具有更多的优点,所以,世界各主要采煤国都相继开发了各种形式的电牵引采煤机。采煤机电牵引有两种方式直流电牵引和交流电牵引。牵引部是采煤机构重要组成部分，采煤机牵引部不但担负着移动采煤机，使工作机构连续落煤或调动机器的任务，而且牵引速度的大小直接影响工作机构的效率和质量高低，并对整机的生产能力和工作性能产生很大影响，牵引系统的可靠性决定着采煤机的质量和使用效果。 本次设计题目为交流电牵引采煤机电气控制系统设计，已MG300/700-WD电牵引采煤机为背景，通过对牵引机构类型的选择，牵引电动机型号的确定，变频器的选择，主控器的设选择，及控制软件程序的设计，最终实现采煤机的牵引调速系统。 关键字：采煤机；电气控制系统；变频调速 Abstract Coal mining machine is one of the important equipment for coal mine production mechanization and modernization.. The development of the traction technology of the shearer is driven by the chain to the chain without traction, and then the traction of the hydraulic traction is developed from the hydraulic traction to the electric traction.. As the electric traction shearer has more advantages, so the main coal mining countries in the world have developed a variety of electric traction shearer. There are two ways of traction for traction and AC traction in the traction of coal mining machine. Traction is coal mining institutions is an important part, Shearer Haulage Unit not only charged with the mobile mining machine, working mechanism continuous falling coal or adjustment of the machine, and traction speed directly affects the size of the efficiency and quality of the working mechanism, and exert a great influence on the whole machine production capacity and performance of, system reliability of traction determines the quality of coal mining machine and the effect of using. The topic of design for AC traction shearer electrical control system design, has MG300/700-WD traction shearer as the background, through the mechanism type selection of traction, traction motor model determined choice of the converter, main controller design selection and control software program design, and ultimately shearer traction control system. Key words：Coal mining machine; electrical control system; frequency conversion speed control 目录 1.绪论 1 1.1采煤机概述 1 1.2国内外电牵引采煤机研究现况 1 1.2.1国外研究现况 1 1.2.2国内研究现况