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目前煤矿提升机造成过卷的原因很多,如误操作,减速后重新加速等;最常见的是提升机失去控制,到达减速段时不能按照速度图的要求进行减速,此时司机注意力若不集中或采取措施不妥,则导致严重过卷。提升机的控制系统中对限速保护往往起不到可靠作用。这些保护装置的准确性差,又不能进行模拟试验,调整也很困难。我矿副井JKD2.8M×6多绳摩擦轮提升机其电控系统为F-D闭环直流调速。由于目前这种类型的提升机在国内使用的台数不多,使用的时间也不长,无论设计、产品制造以及维护管理方面都没有成功的经验。这套设备电控系统采用平面控制器作为速度的时间给定信
Currently coal mine hoist caused by excessive volume for many reasons, such as misuse, re-acceleration after deceleration, etc .; the most common is the elevator out of control, reach the deceleration section can not be decelerated in accordance with the requirements of the speed map, then the driver’s attention if not Concentration or improper measures, then lead to serious over-roll. The control system of hoist often can not play a reliable role in the speed limit protection. The accuracy of these protective devices is poor, they can not be simulated test, adjustment is very difficult. I mine shaft JKD2.8M × 6 multi-rope friction wheel hoist electronic control system for the F-D closed-loop DC speed. Due to the current use of this type of hoist in the country a small number of the use of time is not long, no matter the design, product manufacturing and maintenance management has no successful experience. This device electronic control system uses a flat controller as a speed of a given letter