The invention discloses a
drill pipe device of a hydraulic
pile driver, and belongs to the field of
drill pipe devices of
pile drivers. A
drill rod connecting sleeve of the
drill pipe device is connected to one end of a main shaft of the hydraulic
pile driver, the other end of the drill rod connecting sleeve is connected with a
drill pipe connecting sleeve, and a rotating connector assembling
assembly is installed on the
drill pipe connecting sleeve; the drill
pipe device comprises the drill rod connecting sleeve, the drill pipe connecting sleeve, a drill pipe upper sleeve, supporting sleeves,a drill pipe, a lower spline sleeve, a
drill bit and a drill rod
assembly; the lower end of the drill pipe connecting sleeve is connected to the drill pipe upper sleeve, the drill pipe and the lowerspline sleeve in sequence; the centers of the drill pipe connecting sleeve, the drill pipe upper sleeve, the drill pipe and the lower spline sleeve are axial through holes, the drill rod
assembly is arranged in the through holes, the
drill bit is connected to the lower spline sleeve, and the supporting sleeves are connected into the drill pipe. The drill pipe device has the advantages that the service life of the drill pipe is prolonged,
impact force is large, detachment and replacement are convenient, the use cost is lowered, and the working efficiency is improved.