The telescopic belt conveyor is mainly composed of the following parts: head frame, driving device, driving roller, tail frame, idler, intermediate frame, tail steering device, unloading device, cleaning device, tensioning device, belt storage device, etc. Conveyor belt is the load-bearing component of belt conveyor. The material on the belt runs with the conveyor belt. The material can be unloaded at the end or middle part of the conveyor according to the needs. The conveyor belt is supported by rotating idler, which has small running resistance and can be arranged along the horizontal or inclined line. The retractable belt conveyor takes the conveyor belt as the traction and load-bearing component Continuous transportation equipment for material transportation. The upper and lower conveyor belts are supported by idlers to limit the deflection of the conveyor belt. The tension device provides the tension required for the normal operation of the conveyor belt. When working, the driving device drives the driving roller, drives the conveyor belt to run through the friction between the driving roller and the conveyor belt, and the materials are loaded on the conveyor belt and move together with the belt conveyor.

Generally, the telescopic belt conveyor is unloaded at the end. When a special unloading device is used, it can also be unloaded in the middle. The main difference between the structure and the general fixed type is that the telescopic conveyor belt mechanism is added. The telescopic mechanism has tape storage, tape winding, tape releasing and tail moving device, and the intermediate frame is easy to disassemble. The belt storage device includes a group of fixed rollers and a movable roller assembled on the traveling car. The conveyor belt passes through the two groups of rollers, and the distance between the two groups of rollers can be increased through the tension winch. The conveyor belt involved in the belt storage device increases, and the tail moves forward, so the transportation distance of the conveyor is shortened, and vice versa. The belt retracting and releasing device is a device for removing and connecting the telescopic belt conveyor, which can wind the removed belt into a coil, or connect the coil belt to the belt storage device, so that the length of the conveyor can be changed as needed. There are two types of telescopic belt conveyor, horizontal type and inclined type. It is used in the lower drift of the mining face with the bridge type transfer machine, which can speed up the advancing speed of the working face, and can also be used in the driving face using the roadheader