The MDG5t-50t single main beam hook gantry crane is a material handling and lifting equipment used in factories, mines, stations, ports, and other freight yards. It is an L-shaped or lightweight single main beam gantry crane with simple structure, easy manufacturing and installation, light weight, low cost, and small windward area. The single beam inclined hanging gantry crane trolley runs on a single main beam, with horizontal wheels and vertical reverse rollers to ensure safe and reliable operation, and is suitable for lifting long materials for turning operations. The single beam suspension gantry crane consists of a bridge, a large vehicle operating mechanism, a small vehicle, and electrical equipment. The bridge adopts a box welded structure, and the large vehicle operating mechanism is driven separately.