The invention discloses a warning device for inclination of a lifting hook. The warning device comprises an insulated case, an insulated cover, one or more conductive round rings, a bottom conductive round ring and a contact device. The insulated case is provided with two or more annular side walls different in radius, and a groove is formed between the two annular side walls and filled with conductive fluid. The insulated cover is arranged on the insulated case in a covering mode to form relatively-closed space in the insulated case. The conductive round rings are arranged at the upper part of the wall of the groove and connected to binding posts. When the insulated case inclines, the conductive fluid makes contact with the conductive round rings. The bottom conductive round ring is arranged on the bottom of the groove and provided with a binding post. The contact device is connected with the binding posts of the conductive round rings and the binding post of the bottom conductive round ring and provided with a signal line extending out of the insulated case or the insulated cover. The warning device for inclination of the lifting hook can inform operating personnel in time when the lifting hook inclines and prevent inclined lifting of a crane.
Warning device for inclination of lifting hook
2016-01-06
Patent
Elektronische Ressource
Englisch
IPC: | B66C Krane , CRANES |
Europäisches Patentamt | 2023
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