Improved drilling tool single acting mechanism

• Main Authors: BAO XINYI, SU GANG, YAO FENGLEI
• Format: Patent
• Language: Chinese; English
• Published: 23.04.2014
• Subjects: EARTH DRILLING; EARTH DRILLING, e.g. DEEP DRILLING; FIXED CONSTRUCTIONS; MINING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR ASLURRY OF MINERALS FROM WELLS

The utility model relates to an improved drilling tool single acting mechanism, which comprises a shaft, wherein the peripheral surface of the shaft is orderly connected with a first joint, a bearing seat, an upper bearing, a shaft sleeve, a lower bearing and a locking nut from top to bottom, the shaft sleeve is assembled in a second joint, one end of the second joint is connected with the bearing seat through in a threaded mode, the other end of the second joint is connected with an inner pipe in the threaded mode, the lower bearing and a shaft segment of the shaft below the lower bearing are arranged in the inner pipe, an oil delivery pipeline is arranged in the shaft along the axial direction, the oil delivery pipeline stretches to the shaft sleeve to be matched with the shaft segment, the bottom end of the oil delivery pipeline is communicated with the outer circle of the shaft through an oil outlet hole, a spring and a gasket are sleeved on the shaft segment which is arranged between the lower bearing an