文档介绍：矿井提升机直流调速系统设计
摘要
矿井提升机也称矿井卷扬机,是生产过程中的大型关键设备,也是井上和井下的唯一输送通道。提升机主要用于升降人员和矿石、煤炭等,其性能和安全可靠性直接影响着煤炭、矿石的生产及作业人员的生命安全,一旦发生事故必然导致人员伤亡和设备的严重损坏,造成重大的经济损失。因此,素有“矿山咽喉”之称。矿井提升机种类繁多,按照井道结构分,有立井与斜井;按照传动电机分为交流传动和直流传动;按容器功能分,则有箕斗和罐笼;按钢丝绳结构方式分,则有单绳和多绳摩擦轮提升机;按矿井功能分为主井(输送矿产品)与副井(输送人员与材料等);按提车点的多少分为单水平和多水平提升机。纵观电气传动系统的发展历程,它经历了从恒速到调速,从低性能到高性能,从单机独立运行到多机系统控制等发展过程。随着技术的发展,矿井提升机对电气传动在起制动、正反转以及调速精度、调速范围、静态特性、动态响应等方面都提出了更高的要求,这就要求大量使用调速系统。在工程实践中多有许多生产机械要求在一定的范围内进行速度的平滑调节,并且要求有良好的静、动态性能。本文中讲到的主要是矿井提升机的双闭环直流调速系统。
关键词:矿井提升机,直流调速,双闭环系统,动态性能
Mine hoist double loop DC speed control system
ABSTRACT
Mine elevator also said the mine hoist, is a large-scale production process key equipment and the only aboveground and underground transmission channel. It was mainly used for lifting personnel hoist and ore, coal, performance and reliability of its direct impact on the coal, ore production and the lives of workers. In case of accidents will inevitably lead to casualties and serious damage to the equipment, mining normal production Interrupted, resulting in significant economic losses, known as "mine throat ". A wide range of mine hoist, shaft structure in accordance with points, a shaft and shaft; in accordance with the drive motor points for the AC drive and DC drive machine; feature points by the container, there are skip and cage; by way of sub-rope structure, the A single rope and hoist Friction wheel: function points by the main mine shaft (transmission minerals) and the auxiliary shaft (transportation of personnel and materials, etc.); point by mentioning how many cars are divided into single-level and multi-level elevator. Throughout the course of development of electric drive systems, it has undergone from the constant speed to the speed, from low performance to high performance, from single to multi-machine system independently control the development process. As technology advances, the effect of the electric transmission brake, reversing and speed control accuracy, speed range, the