Locking device for hydraulic driving mechanism

The utility model relates to a locking device for a hydraulic driving mechanism, which comprises a support II, a horizontally arranged locking hydraulic cylinder is arranged on the support II, a lock head is fixedly connected to the telescopic end of the locking hydraulic cylinder, one end of the lock head is hinged with the telescopic end of the locking hydraulic cylinder through a pin shaft, a socket is fixed on the support II close to a bridge breaking device, and the socket is connected with the locking hydraulic cylinder through a pin shaft. The middle of the socket is provided with an insertion hole which is matched with the lock head and penetrates through the socket, the lock head can penetrate through the insertion hole and does reciprocating motion in the insertion hole, and a lock catch matched with the lock head is fixed to a device below the corresponding hydraulic driving mechanism. The device is simple in structure and high in practicability, the situation that the hydraulic cylinder is damaged