Hook fixing device for folding-arm lorry-mounted crane

The utility model relates to a hook fixing device for a folding-arm lorry-mounted crane, belongs to the technical field of engineering machinery and aims at providing the hook fixing device for the folding-arm lorry-mounted crane which is convenient to use and realizes the fast installation and fixation of a hook. The hook fixing device for the folding-arm lorry-mounted crane comprises a telescopic arm and a pulley stand, wherein the telescopic arm of the crane is connected with one end of a connecting block, and the other end of the connecting block is connected with the pulley stand; a steel cable is twined on the pulley stand, and one end of the steel cable is connected with a heavy punch; the heavy punch is connected with the hook through a shackle, and the other end of the steel cable is twined on a hoisting mechanism; a plane which can be mutually fitted with the heavy punch is arranged on the peripheral surface of the pulley stand.