Cantilever crane, also known as jib crane, is a light fixed-point lifting equipment in the workshop, which is composed of columns, slewing cantilevers and lifting hoists. The cantilever can be flexibly rotated at 180°/270°/360°, occupying a small footprint and easy to install, and is specially used for fixed-point lifting at stations, mold loading and unloading, workpiece loading and unloading, and welding-assisted lifting. It is a commonly used lightweight lifting equipment in small and medium-sized processing plants, sheet metal welding workshops, and machining workshops.