There are two operation modes: stacking and retrieving. For stacking, the bulk materials transported by the belt conveyor are unloaded to the belt conveyor on the boom through the tail car, and then thrown from the front end of the boom to the material yard. Through the operation of the whole machine, the rotation and pitching of the boom can make the material pile form a neat trapezoidal cross-section. Retrieving is achieved continuously through the rotation of the boom and the rotation of the bucket wheel. The material is unloaded to the reverse-running arm belt conveyor through the unloading plate, and then unloaded to the material yard belt conveyor through the funnel under the center of the machine. Through the operation of the whole machine, the rotation and pitching of the boom can make the bucket wheel take out all the materials in the storage pile.
