Emergency control system of crane

The utility model relates to an emergency control system of a crane. The device comprises a power supply, an electrical control cabinet, a valve and an emergency operation panel, the valves comprise aloading and unloading switching valve, supporting leg action valves and a suspension arm multi-way valve; the get-on and get-off switching valve controls hydraulic oil to flow to a get-on part or a get-off part, the supporting leg action valve controls the hydraulic oil to flow through a hydraulic oil way of the supporting leg, and the multi-way valve can control the hydraulic oil to flow througha hydraulic oil way of the suspension arm; the loading and unloading switching valve, the supporting leg action valves and the suspension arm multi-way valve are each provided with an electromagneticvalve, the electromagnetic valves are driven by voltage to control the electromagnets in the valve blocks to be powered on and powered off, when the electromagnets are powered on, the valve elementsare pushed to the working st