地下双动力铰接式自卸车集电弓控制系统设计

Design on Pantograph Control System for Underground Dual-powered Articulated Dump Truck

地下双动力铰接式自卸车采用架线系统和柴电系统2种动力形式,其中架线系统安装在矿井斜坡道顶部,通过集电弓的连接向车辆提供三相交流电源作为整车动力源。分析了集电弓的不同工作模式,根据集电弓的结构尺寸、矿井巷道尺寸,提出了不同工作模式下集电弓的控制要求,设计了集电弓的液压系统和控制系统,制定了不同工作模式下的控制策略,利用车载PLC控制器采集传感器信息,实时监测集电弓的状态及位置信息,通过控制各动作油缸的位置和动作时序,实现了集电弓的手动升降弓控制、自动升降弓控制以及动态随动控制,确保了集电弓与架线系统准确、可靠地连接,解决了双动力铰接式自卸车架线系统持续、稳定、可靠供电的问题。

Dual-powered underground articulated dump truck has two types of power,the one is the engine system,the other is overhead trolley system. The overhead trolley system installed on top of the tunnel could supply 3-phase AC power to the vehicle by pantograph. Firstly,the different working modes of the pantograph are analyzed,and the control requirements on different modes are given according to the dimensions of the pantograph and the tunnel. Secondly,the hydraulic and control system is designed,and the control strategies for different modes are made. The state of the pantograph is monitored in real time using the sensors information collected by the PLC. Finally,the function of manual rising-lowering,automatic rising-lowering and dynamic servo control of the pantograph are realized by controlling the cylinders locations and action sequence. It guarantees the connecting between the trolley system and the pantograph reliably and safely,which solves the problem of the power supplying by the trolley system.