Simple self-locking pin shaft

• Main Authors: QIN JUN, NAN YAJIE, FU RUIHUA, GAO WUXIAO, YAN YALU, CAO WEI, MIAO FENG, ZHENG ZHAOTU
• Format: Patent
• Language: Chinese; English
• Published: 10.02.2023
• Subjects: BLASTING; DEVICES FOR FASTENING OR SECURING CONSTRUCTIONAL ELEMENTS ORMACHINE PARTS TOGETHER, e.g. NAILS, BOLTS, CIRCLIPS, CLAMPS,CLIPS, WEDGES, JOINTS OR JOINTING; ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVEFUNCTIONING OF MACHINES OR INSTALLATIONS; HEATING; LIGHTING; MECHANICAL ENGINEERING; THERMAL INSULATION IN GENERAL; WEAPONS

The utility model provides a simple self-locking pin shaft, and belongs to the field of machinery. The lock ring is of a hollow annular structure, a clamping block groove is formed in the center of the upper surface of the lock ring, and a circular lock cylinder piece groove is formed in the center of the lower surface of the lock ring; the lock cylinder is composed of a lock cylinder piece and a clamping block, the lock cylinder piece is of a semi-oval structure, a check ring groove is formed in the long-axis edge of the lock cylinder piece, and the clamping block is fixedly connected with the upper surface of the lock cylinder piece. The pin shaft assembly comprises a screw, an elastic washer, a check ring and a pin shaft, a screw hole matched with the screw in size is formed in the axis of the pin shaft, the lower surface of the head of the screw is fixedly connected with the upper surface of the elastic washer, and the lower surface of the elastic washer is fixedly connected with the upper surface of the