The transmission part is mainly composed of motor, shaft, reducer , transmission sprocket, chain tensioner, blind shaft, headstock, etc. The motor, reducer and head frame are arranged in parallel. A motor connected to the cover are connected together, and through the through 4 Treaty M24 bolts in parallel pendant head frame, the input shaft of the speed reducer are connected by an electric coupling and Shaw wood shaft. The support of the output shaft extending into the side plate of the head frame is connected with one end of the head sprocket with a spline. The other end of the head sprocket and the blind shaft extension installed on the other side of the head frame are also splined. connection. The torque generated by the motor is transmitted to the reducer through the wooden pin coupling, and then the torque is transmitted to the head sprocket through the safety pin after being reduced by the reducer, thereby driving the scraper chain to run in the middle groove to achieve the purpose of transporting coal. In case of abnormal phenomena such as overload or scraper chain scraping in use, the safety pin will be cut first, so that the torque of the motor cannot be transmitted to the sprocket of the machine head, and the motor runs at no load, which plays a role in protecting the motor and other components. In order to facilitate the overall movement of the conveyor , a fixed beam and a support beam are installed at the lower part of the head frame. In order to adapt to the small space of thin coal, the transmission part is installed on the fixed beam with a total height of only 540mm .