The invention provides a chain head for a crane. The chain head for the crane comprises a bolt, wherein the bolt is connected with a lifting chain through a chain head mounting support, a chain head nut is arranged on the bolt, and a locknut is further screwed on the position, on the outer side of the chain head nut, of the bolt; and a second chain head nut is further screwed on the position, between the chain head nut and the chain head mounting support, of the bolt. The structure can avoid flaw detection and can be replaced after fatigue fracture failure to prevent the accident that heavy objects fall down.
本发明提供一种起重机链条头,包括一根螺栓,螺栓通过链条头安装支座与起升链条连接,在螺栓上设置有链条头螺母,在螺栓上,链条头螺母的外侧还拧有防松螺母;在所述的螺栓上,在链条头螺母与链条头安装支座之间还拧进有第二链条头螺母。这种结构可以免于探伤,使用到疲劳断裂失效后才给予更换,而不致造成重物坠落的意外。
Chain head for crane
一种起重机链条头
2021-10-29
Patent
Electronic Resource
Chinese
IPC: | B66F HOISTING, LIFTING, HAULING, OR PUSHING, NOT OTHERWISE PROVIDED FOR, e.g. DEVICES WHICH APPLY A LIFTING OR PUSHING FORCE DIRECTLY TO THE SURFACE OF A LOAD , Hub-, Verhol- oder Schubvorrichtungen, soweit nicht anderweitig vorgesehen, z.B. Vorrichtungen mit unmittelbarer Krafteinwirkung auf die Last |