The gantry lifting frame is a movable and detachable gantry lifting frame equipment, which requires no fixed infrastructure installation and embedded tracks, and can be flexibly built in workshops, warehouses, construction sites, yards and other places, adapting to lifting operations in scenarios without fixed lifting equipment. Finely welded with high-strength I-beams and square steels, it has a stable and firm overall frame, high rigidity, excellent load-bearing performance, no easy shaking and deformation, and can adapt to the lifting, transportation, assembly and maintenance operations of light and medium-tonnage workpieces. Adopting a gantry spanning structure, it has a wide open operation space without dead angles, and can freely complete the whole process of workpiece lifting, translation, positioning and landing with higher operation flexibility than fixed cranes. The product supports customized adjustment of height and span, which can be flexibly adapted according to site space and workpiece size to meet the operation needs of different working conditions. Equipped with anti-slip moving wheels and locking devices at the bottom, it can realize free movement and fixed-point locking, which can not only flexibly transport equipment, but also ensure the stability of lifting operations, realizing multi-function and high efficiency. It is easy to disassemble, assemble and transport, and can be quickly disassembled and stored without occupying site space, adapting to temporary operation, multi-point operation and space-limited operation scenarios. With rust and corrosion-resistant spray treatment on the surface, it is wear-resistant and aging-resistant, adapting to complex indoor and outdoor working conditions for a long time, and is widely used in mechanical maintenance, equipment assembly, small component lifting, warehousing material transportation and other fields.