Novel safe lifting gear of tower crane

The utility model relates to a tower crane for building operations, and particularly relates to a novel safe lifting gear of a tower crane. The novel safe lifting gear comprises a base, a support, a hydraulic cylinder, a pulley, a pulley groove, a steel wire rope, an elevator, and a slideway, wherein the support and the hydraulic cylinder are fixed at the upper part of the base, the pulley groove is formed at the top of the support, the pulley is arranged on the pulley groove, the steel wire rope penetrates through the pulley so as to be connected with the elevator, the slideway is arranged on the support, and a chute is arranged between the elevator and the slideway. The novel safe lifting gear is characterized in that a clamping groove is formed at the bottom of the elevator, the clamping groove is internally provided with a telescopic rod and a spring, the telescopic rod is connected with the spring, and the spring is connected with the steel wire rope by virtue of a connecting rod. The novel safe lifting