Adjustable gantry crane is often used to lift parts and equipment into position in welding shops, fabrication shops and etc.Īdjustable gantry crane - A type of crane of Dongqi Crane The box girder also has the disadvantages of high cost, heavy self, and poor wind resistance.īox girder gantry crane - Dongqi types of gantry craneįouth, types of gantry cranes also can be grouped in terms of gantry designs, including:Īdjustable gantry cranes is designed for warehousing applications, where the movement of materials is required to go through aisles, doorways, around obstacles, and over or under obstructions. The main beam adopts a box girder structure. As shown in the right figure, MGhz1200 has a lifting capacity of 1,200 tons and is the largest gantry crane in China. It is generally used for gantry cranes with large tonnage and oversized tonnage. The use of steel plates welded into a box structure, with high safety, stiffness and other characteristics. Truss type gantry crane - Dongqi types of gantry crane Suitable for sites with low safety requirements and low lifting weight. However, because of the large number of welding points and the defects of the trusses themselves, the truss beams also have the drawbacks of large deflection, low rigidity, relatively low reliability, and frequent detection of welding spots. The structural form welded by angle steel or I-beam has the advantages of low cost, light weight, and good wind resistance. Thirdly, according to girder design, the gantry cranes can be grouped into truss gantry crane type and box girder gantry crane types. At present, generally more box-shaped structure. According to the different main beam structure, it can be divided into two forms of box beam and truss. The C-shaped legs are made to be inclined or curved so as to have a large lateral space for the cargo to pass through the legs.ĭouble girder gantry crane - Dongqi types of gantry craneĭouble girder gantry cranes have strong bearing capacity, large span, overall stability, and many varieties, but their own quality is larger and their cost is higher compared with single-girder gantry cranes with the same weight. However, the space for lifting cargo through the legs is relatively small. The L-shape is easy to manufacture and install, and the stress conditions are good. Single-gantry gantry cranes have L-shaped and C-shaped door legs. Therefore, when the weight Q≤50t and the span S≤35m, this form can be used. Compared with double-girder gantry cranes, the overall stiffness is weaker. The main beam is mostly an off-track box-shaped structure. The single girder gantry crane has a simple structure, is easy to manufacture and install, and has a small mass of its own. Single girder gantry crane - Dongqi types of gantry crane Single cantilever gantry cranes types: This type of structure is often chosen by site constraints. Double girder gantry craneĭouble girder gantry crane types: The most common form of structure, its structural force and the effective use of the site area are reasonable. Semi-gantry cranes types: The height difference of the legs can be determined according to the site construction requirements. Their functions are as below:įull-gantry crane types: The main beam has no overhang, and the trolley is carried out within the main span. Geneally the types of gantry cranes are as following:įirst, normally, gantry cranes are divided into full gantry crane, semi-gantry crane, gantry crane with cantilever, gantry crane without cantilever. The gantry crane wind area is large, in order to prevent the slide and overturned under strong wind, Equipped with a sonde and rail clamping device.Īccording to differenets standards, gantry cranes can be grouped in to different types. If span length is more than 30 meters, one side is rigid leg, but the other side it is flexible leg, which makes the gantry frame statically determinate system, it can avoid outer load under the action of the additional stress due to the lateral thrust, also can compensate bridge longitudinal temperature deformation. Legs on either side of the bridge are generally rigid leg Hoisting trolley running on bridge, some lifting trolley is a jib type crane. Gantry crane has same lifting mechanism, cross and long travel mechanism as overhead crane.īecause of the large span, Crane traveling mechanism mostly adopts respectively drive, in order to prevent skewed operation and increase the resistance, or even accident. Its function is to lift heavy thing and move to other place, load & unload truck, train, ship, and install some equipment crane manufacturer. This gantry crane travels on rail on ground, mainly used in outdoor yard, storage, dock, power station, port, railway station and so on. One or two beam is supported on steel legs, on beam, there is a trolley to lift and move across, and the whole structure seems like a big gate, we call it Gantry Crane.
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