The semi gantry crane design includes a bridge, crane running mechanism, trolley running mechanism and lifting mechanism. It is unique in that one side of it is supported by legs on wheels or tracks, while the other side relies on a runway system that is usually attached to a building column or side wall.

A semi gantry crane is a versatile and efficient lifting system with a unique design that allows one side of the crane to run on a track system fixed to a wall or building structure, while the other side runs on a ground track.

A semi gantry crane is a gantry crane with one leg running along a ground track while the other end of the bridge is supported by a truck running along an overhead track.

Semi gantry cranes, with their unique structure and practicality, have become an indispensable member of modern industry. It is particularly suitable for light and medium-duty lifting tasks, such as cargo loading and unloading, machine equipment maintenance, various applications in docks and factories, etc.

La grúa pórtico de una sola viga se compone principalmente de un puente (viga principal), cuatro estabilizadores, una viga inferior, un dispositivo de accionamiento del carro, un control eléctrico, un polipasto eléctrico, etc. El marco del puente (viga principal) de una grúa pórtico de una sola viga es generalmente una estructura en forma de caja soldada por placas de acero. La parte inferior de la viga principal está equipada con un riel en forma de I para la operación del polipasto eléctrico. También se puede utilizar para la viga principal de grúas pórtico de gran envergadura que trabajan en exteriores. La estructura de celosía formada mediante soldadura de secciones de acero tiene una gran rigidez (especialmente la rigidez horizontal), peso ligero, área pequeña a barlovento y altos beneficios económicos. Sin embargo, la producción y soldadura de esta estructura es más complicada y difícil que la estructura en forma de caja.

Semi-gantry crane is suitable for lifting, transporting, loading and unloading in open-air working places such as stations, docks, warehouses, construction sites, cement product yards, machinery or structural assembly yards, power stations, etc. It is also suitable for working in indoor workshops.