Deformation of a crane at the port, mainly used for outdoor, cargo handling, most in this area. It's like a metal door frame, load-bearing beams installed in two meters, directly on the ground, with both ends of the track, through a cantilever crane. High efficiency, large range of adaptability, versatility, widely used in ports. Type: gantry crane crane spreader frame according to the general shape of the shape. (1) frame structure (1) Gantry Crane: No, at the intersection of the vehicle. (B) the level difference leg gantry crane, according to the site requirements. (C) Double cantilever gantry crane: is one of the most common structure, strength and effective use of space gantry crane wholesale market _ _ manufacturers structure is reasonable. (D) single cantilever gantry crane: This structure is usually due to restriction area. (2) based on the beam structure (1) Single: Single-girder gantry crane gantry cranes simple structure, manufacture and installation of quality, a small portion of box girder construction. When Ssangyong door, stiffness weaker. So, when the weight of 50 tons Q = 35, can be used in two forms this form.günstig preparation of L and C. Single girder crane boom installed, under stress conditions, the quality is very small, and in some areas the legs and feet, hub, a relatively small tilt or bend. C, in the space of a large transverse gantry crane, the leg of the goods. . . . . . . (B) with a double crane bridge crane carrying capacity, geometry and global stability is good, but the quality and diversity, as compared to a single crane, greater weight and higher costs. Depending on the structure and can be divided into two kinds of box girder. Generally use the box-shaped structure. Bilingual