The head device consists of a head box, a head cover, a main shaft, and a sprocket. Two sprockets are installed on the main shaft and supported by a pair of double row radial spherical roller bearings, which are located on the head box. Due to the wear and tear of the sprocket teeth, in order to facilitate maintenance and replacement, the sprocket is divided into two parts: the wheel body and the ring gear. The ring gear is further divided into five sector shaped tooth blocks, each of which is connected to the wheel body with five bolts. This avoids the trouble of having to remove the bearings and the entire sprocket when replacing the tooth blocks. The bearings of the main shaft are sealed with a labyrinth seal, and an oil cup is installed on the bearing seat. The bearings are regularly lubricated with oil. There are three inspection doors on the box for observing the operation of the machine. There is a flange above the head cover that is connected to the dust collection pipeline. Through the dust collection equipment of this system, the dust raised during unloading is collected to improve the working environment. The side panel of the head box is equipped with a towing frame for installing tracks. The towing frame is connected to the box with bolts, and the track is connected to the bracket on site.

The tail device consists of tail frame, tail wheel shaft, tail sprocket, tensioning device, movable track and other components, and a proximity switch is installed at the tail to monitor the speed. A pair of sprockets are installed on the tail wheel shaft, and the structure of the sprockets is basically the same as that of the head drive sprocket, except that the ring gear is divided into three parts. The two ends of the tail wheel shaft are supported by a pair of double row radial spherical roller bearings, and the bearing seats are installed on the guide rails of the tail frame. The tensioning device consists of a pair of compression springs and two trapezoidal threaded screws and their accessories. The screw passes through one end of the spring and is hinged on the bearing seat, while the other end is inserted into the fixed support hole on the tail frame. The two ends of the spring are supported, and the deformation of the spring is adjusted by the nut. When the spring is compressed, its compression reaction force is transmitted to the bearing seat through the nut and screw, thereby causing the bearing seat to move along the guide rail and achieve the purpose of tension. The magnitude of the tension force is determined by the compression amount of the spring. In addition to adjusting the magnitude of the tension force, the tensioning device can also play a buffering and protective role in the chain when the running parts are blocked during operation. When the chain links run away from the tail and detach from the sprocket, the rollers on both sides of the material groove should enter the movable track to support the running part. The activity track is one end of the track between the end of the tail fixed track and the tail sprocket. One end is fixed on the bearing seat of the tail sprocket shaft, and the other end is inserted between two guide rails with a spacing of 31mm. The guide rails are connected to the end of the tail fixed guide rails through bolts and steel plates. When the activity track moves forward and backward with the bearings, the other end is pulled back and forth within the gap between the two guide rails, To ensure a smooth transition of the roller to the fixed track.