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Portable gantry crane is called mini gantry crane, frame gantry crane, it's a light small lifting crane, which is composed of Main Girder, Support Legs, Motorized Wheels(optional) and Hoist etc. It has the features of simple design, moving freely, high quality, cheap price. The total lifting capacity of portable gantry crane is 0.5ton-10ton, and it adjusts to work in small workshop, warehouse, stocks, etc.
link:https://www.kinocranes.sg/overhead-crane/6-ton-gantry-crane.html
6 Ton Gantry Crane | Kenancranes