Research on auxiliary transportation system of double-electric trolley in mine

In order to find an effective solution for vehicle pollution and long slope transportation in underground coal mine, double-electric trolley auxiliary transportation system in mine is put forward. The system is composed of power supply system, overhead line system, charging station, collector and double electric trolley. It has three operation modes: quick charging, online and mixing. In this paper, the key technical indexes of each subsystem are put forward, and three operation modes are expounded in detail. Finally, three key technologies and the corresponding solutions of the auxiliary transportation system are proposed, including power capacity and supply arm matching technology, overhead line change line technology, power battery selection and matching technology, to provide technical support for the future realization of trolley auxiliary transportation system.