Novel chain head pre-tightening structural form

• Main Authors: MAO SHAOFANG, XIAO YANFENG, REN LUYAO, SUN ZHIQI, LI CHUNXIN, FU LIN
• Format: Patent
• Language: Chinese; English
• Published: 29.09.2023
• Subjects: BELTS, CABLES, OR ROPES, PREDOMINANTLY USED FOR DRIVINGPURPOSES; BLASTING; CHAINS; 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; FITTINGS PREDOMINANTLY USED THEREFOR; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVEFUNCTIONING OF MACHINES OR INSTALLATIONS; HEATING; LIGHTING; MECHANICAL ENGINEERING; THERMAL INSULATION IN GENERAL; WEAPONS

The utility model discloses a novel chain head pre-tightening structural form which comprises a telescopic chain, an arm body fixing plate and a chain head, a belt hole is formed in the arm body fixing plate, the chain head penetrates through the belt hole in a sliding mode, one end of the chain head and the telescopic chain are installed together, a sleeve is arranged outside the other end of the chain head in a sleeved mode, a disc spring is arranged outside the sleeve in a sleeved mode, and the disc spring is connected with the arm body fixing plate. The length of the disc spring is slightly larger than that of the sleeve, a nut is further installed at the end, away from the telescopic chain, of the chain head, the nut pre-tightens the disc spring, and a component for preventing the nut from falling off is further arranged at the end, away from the telescopic chain, of the chain head. The utility model has the beneficial effects that on one hand, the instant impact when the arm body stretches out and draws