Crane limit switch is used to limit the operation of each mechanism when a safety protection device. There are two kinds of limiter, one is to protect the safe operation of the lifting mechanism of the rise limit position limiter and limit position limiter down; The other is to limit the operating mechanism of the operating limit position limiter.
Crane limiter switch
The lifting limit position limiter of the crane is used to limit the lifting height of the lifting device. When the lifting device lifts to the limit position, the limiter gives an alarm and automatically cuts off the power supply, so that the lifting mechanism stops running, preventing the lifting device from continuing to rise, and then can prevent the lifting wire rope from breaking to avoid heavy loss accidents and personnel safety accidents.
The descending limit position limiter is used to limit the descending depth of the take-up device. When it drops to the lowest position, the limiter will give an alarm and automatically cut off the power supply, so that the take-up device will stop the descending operation. At this time, it should ensure that the wire rope is wound on the reel with a certain number of safe turns left
