Double girder crane is a type of an overhead crane, whose main function is to move heavy materials from one location to another, in the most precise manner. There are several types of overhead crane, and to each there is their own unique and specified function. These types include: top running crane, under running crane, single girder bridge crane, double girder bridge crane, single girder gantry crane, double girder crane which is our focus today and jib crane. Some of these cranes have almost identical names with differences in one word, which should be put into consideration as that it what distinguishes there different functions, its very important to note that, and try and understand the difference before purchase especially.
The double girder gantry crane is very similar to the bridge crane only that this particular crane is supported by legs, that support the bridge girders, as the name would suggest, it has two bridge girders, hoist and trolley whereas the bridge crane moves on suspended runways. It travels on fixed rails embedded in or laid on top of the floor. The bridge is the primary component of this and all cranes, as through it the hoist and trolley can function The function of the hoist is what raises, lowers and hold the load, using wire rope or chain.
The trolley, this is what I supports the hoist and enables horizontal movement along the crane bridge with the hoist and hook enabling picking and lowering of the load. There are two types of double girder cranes: the A shaped and the U shaped, the shapes are obtained from the structure formed by the legs of the cranes. The u shaped crane has more space between it’s legs hence bigger products can move through the legs, and does not require a supporting saddle either. This crane is much lighter in weight, which is always a bonus. Although the U shaped crane has a few more advantages as compared to the A shaped crane, they are both very equal to the task.
Both types of the double girder gantry cranes are very complex in design and is used in lifting heavy loads has high working strength and can be used in different types of working conditions and environments, it’s functionality is not affected. As they handle almost the same work as true bridge cranes they are usually considered when there is no reason to incorporate an overhead runway system, hence usually used outwards as in the open there are no places to install beams and columns. This type is therefore often used at bridge construction sites, shipyards, rail yards, usually outdoor and open air orders where overhead room may be an issue.
All things in life have advantages and disadvantages, and this crane is no exception. The advantages include, although it best for outdoors it can properly function indoors as well, ideal for transportation of heavy equipment, no limitations to maximum capacities and it has great hook height. For the disadvantages, it is on the more expensive side, especially due to it’s great structure. Double girder gantry cranes are designed and produced in different types, if you need one for your lifting operations, just click here https://www.ellsencranes.com/double-girder-gantry-crane/ and get more detailed information.