Curved device of beam -pumping unit polished rod anticollision

• Main Authors: TIAN YU, ZHOU JIANGUO, CHEN XIANGYANG, LI XIAOLI, ZHAO JIANWEI, LIU YUNXIA, LI WEI, WANG LIANGBIN, FAN XINGJIE, LIU LIJUN
• Format: Patent
• Language: Chinese; English
• Published: 24.11.2017
• 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 discloses a curved device of beam -pumping unit polished rod anticollision, including the polished rod, the sleeve pipe rather than sliding connection is cup jointed to the bottom of polished rod, the both ends of sleeve pipe inner chamber all are provided with the expansion plate, the bottom fixed mounting of sleeve pipe inner chamber has the casing, the inside of casing is provided with the pressure dispersion device, the pressure dispersion device includes stowage box, the bottom of stowage box inner chamber and compression spring's one end fixed connection, compression spring's the other end is connected with the lower fixed surface of diaphragm, the upper surface of diaphragm and the one end fixed connection of spliced pole, the outside lower fixed surface with the contact plate that the other end of spliced pole passed stowage box and extended to stowage box is connected, the expansion end of expansion plate is connected with the lower fixed surface of contact plate. This curved device