摘要自改革开放以来，中国的经济总量占世界的比重越来越大。但经济发展离不 开能源的支持，我国是以煤炭的主要能源。机械化的采煤技术在过去几十年快速 发展，经过早期的技术引进，中期的研究探索以及后期的自主研发，我国的综合 机械化采煤技术水平得到长足的发展。72706

随时代的发展，科学技术也有重大突破，可编程逻辑控制器技术就在在这样 的背景下日趋成熟，电牵引采煤机在采煤产业领域成为首要选择对象。可编程逻 辑控制器技术非常广泛的运用在国民经济和工业生产的各个领域。本文结合采煤 机实际运行情况，对采煤机控制系统就行了设计，采用以 PLC 为核心的可编程逻 辑控制系统以及变频调速系统。能够大大提高采煤机牵引速度，提高采煤效率， 提高现代企业的产能。该控制系统在实际应用中性能稳定，应用性强，故障率小， 人机交互功能强大。主要包括牵引部的行走和传动以及摇臂的抬高系统。

该论文有图 12 幅，表 2 个，参考文献 19 篇。

毕业论文关键词： 采煤机 电气控制 PLC

The control system design of coal winning machine

Abstract Since reform and opening up, the rapid development of national economy。 But economic development can't depart from the support of energy, so the coal demand increase greatly。 Coal as main energy in our country, the mechanized mining technology in the rapid development over the past few decades, after early technology import, the medium-term research exploration, and independent research and development, in the late of comprehensive mechanized coal winning technology level of China is rapid development。

With the progress of science and technology, programmable logic controller technology is increasingly perfect, become more and more coal  power  electric haulage shearer's first choice。 Programmable logic controller technology is widely used in various fields of national economy and industrial production。 Combining with the actual operation situation of shearer, the coal winning machine control system is designed, adopting programmable logic control system with PLC as the core, and variable frequency speed regulation system。 Can greatly improve the speed of shearer traction, improve the efficiency of coal mining, improve the capacity of modern enterprise。 In actual application of the control system performance is stable, strong applicability, small fault rate and strong human-computer interaction function。 Mainly includes the traction of automatic speed control technology and coal higher automatic control technology。

The paper has twelve figures，tow tables，nineteen references。

Key Words： coal winning machine electrical control PLC

目录

摘要 I

Abstract 1

1。绪论 4

1。1 课题提出的背景 4

1。2 国内外发展状况 4

1。2。1 国外发展状况 4

1。2。2 国内发展状况 5

1。3 论文研究的目的和意义 6

1。4 论文研究的内容 6

1。5 论文研究的技术路线

2。结构及工作原理 7

2。1 机械化采煤的主要设备 7

2。2 采煤机的结构及功能