Cross shaft assembly of universal joint

• Main Authors: HE JIANYUE, WU YANWU, LIU TENGYUE, ZHANG JIAN, CHEN JIANLIANG, YANG SHENGGUO, HE JIANLONG
• Format: Patent
• Language: Chinese; English
• Published: 28.10.2022
• Subjects: BEARINGS; BLASTING; BRAKES; CLUTCHES; COUPLINGS FOR TRANSMITTING ROTATION; ELEMENTS OR CRANKSHAFT MECHANISMS; ENGINEERING ELEMENTS AND UNITS; FLEXIBLE SHAFTS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVEFUNCTIONING OF MACHINES OR INSTALLATIONS; HEATING; LIGHTING; MECHANICAL ENGINEERING; ROTARY BODIES OTHER THAN GEARING ELEMENTS; SHAFTS; THERMAL INSULATION IN GENERAL; WEAPONS

The utility model discloses a cross shaft assembly of a universal joint, relates to the field of universal joints, and solves the problems of large friction force, abnormal sound and the like. The cross shaft comprises a cross shaft body and a shaft sleeve, shaft heads integrated with the cross shaft body are arranged in the cross direction of the cross shaft body, the shaft sleeve is arranged on the shaft heads, a boss is arranged on the bottom face of the shaft sleeve in a protruding mode, a plurality of grooves capable of storing grease are formed in the boss, and the grooves are distributed in a grid shape. The boss top face of the shaft sleeve is in contact fit with the end face of the shaft head. The boss is in contact with the shaft sleeve to reduce the contact area, and lubricating oil in the groove is matched and can be continuously released when the shaft sleeve rotates, so that the friction force is reduced, the inner wall of the shaft sleeve is effectively prevented from being abraded, and the ser