Design of automatic drill pipe mounting and dismounting device in hydraulic drill rig

An automatic drill pipe mounting and dismounting device in small hydraulic drill rig was designed. In the device, the hydraulic manipulator was applied to move the drill pipe from the drill pipe storage to the power head, so as to realize the automatic mounting and dismounting of the drill pipe with the aid of drill pipe holding unit. The manipulator moved along the guide rail of the drill and had no interference with the drilling operation of the drill, thus the operation effi ciency and safety property of the drill improved.