The driving device, power source of the towing system, is divided into two types: mechanical driving device and hydraulic driving device. The driving pulley of the driving device rotates and produces great friction against the rope which is spirally winded on the pulley. Thus the rope gets sufficient traction to pull the vehicle. Heavy objects in mining cars can be consequently transported as connected to the towing vehicle. And the tensioning device provides the rope with constant pretension to keep the vehicle run normally. In order to be applicable for waved roadway, pulley sets are equipped along the system, which not only prevents the vehicle from falling off the rail when the rope is raised and also stops the rope rubbing the roadway bottom. The main pulley sets include rope-pressing pulley sets, rope-carrying pulley sets, rope carrying & pressing pulley set, turning pulley set, etc. The return pulley is installed on the terminal of the towing system. It bears the counter-force of the system and reverses the rope running way.
It is applicable for underground transporting roadway with varying slopes equal or less than 18 degrees. Only transportation of materials and devices is recommended in China.