Automatic hook-retracting device of lifting hook of intelligent lorry crane

An automatic hook-retracting device of a lifting hook of an intelligent lorry crane is provided; a hook assembly is connected with a reel assembly through a steel wire rope; the reel assembly is driven by a hoisting oil motor; a guide plate is mounted on a small arm assembly of a boom assembly; a limit switch and a locking mechanism are mounted at the upper end of the boom assembly; the locking mechanism is connected with and controls the limit switch; and the limit switch controls a solenoid valve of the hoisting oil motor. A hook-retracting positioning hanger is mounted on the hook assembly; the hook-retracting positioning hanger touches and moves the locking mechanism and the limit switch; a hook-retracting positioning sleeve is mounted on the locking mechanism. According to the invention, only by moving a special hydraulic joystick, the lifting hook can be retracted automatically, fixed automatically, and stopped automatically; the operation is easy, laborsaving, safe, and reliable without swinging or driving view shielding; the cargo carrying space is saved; and the technical performance and quality of the lorry crane are greatly improved.