Control device preventing accidental movement of lift car

A control device preventing accidental movement of a lift car comprises a steel wire rope, a rolling wheel, a steel wire rope driving device and an automatic braking mechanism. The control device further comprises a rope clamping device, an automatic monitoring device, an electromagnet controller, a locking wheel and a trigger. A loop is composed of the automatic monitoring device, the electromagnet controller and the rope clamping device through a program control circuit. When the lift car displaces accidentally, a signal is sent out by the automatic monitoring device, the electromagnet controller is started, an inserting shaft in the electromagnet controller extends out and is inserted in a locating hole of the locking wheel, so that the inserting shaft and the rolling wheel are locked together, and the rope clamping device is started by the locking wheel through a transmission mechanism and the trigger so that the steel wire rope can be clamped. The control device preventing accidental movement of the lift car has the advantages that when a lift displaces accidentally, the lift can be automatically locked and stopped in a safe position, the lift is controlled in time, safety of passengers of the lift is guaranteed, the lift is repaired by maintenance personnel in time, the lift is effectively prevented from working continuously under the abnormal condition, and therefore life-threatening accidents are eliminated.