A rail mounted gantry is a heavy crane used to load and unload heavy objects on railroad docks, yards, or factories. It consists of two A-frame constructions with train-type wheels on parallel railroad tracks, allowing the gantry to move and cover large loading areas. The crane can lift and lower loads at any point in its range between masts and move along the lower main rails to offload cargo. It is ideal for loading and unloading containers and other oversized cargo.
A rail mounted gantry is a heavy overhead crane typically used to load and unload heavy objects on railroad docks and yards or factories. These cranes are heavy A-frame constructions spaced apart and equipped with train-type wheels on the wide and lower sections. These wheels ride on parallel railroad tracks, allowing structures to move up and down the tracks. The two A-frames are connected at their upper ends by a crossbar arrangement on which an overhead crane is mounted. The complete rail gantry can thus move forwards or backwards along the lower rails, while the crane traverses the gap between them on the upper rails allowing the gantry to cover large loading areas.
Loading docks, rail yards and heavy manufacturing facilities often require cranes capable of lifting extremely heavy and oversized loads and moving them long distances to unloading points. When lifting operations are located inside buildings, these functions are typically performed with conventional traveling cranes. When loading and unloading takes place outside, another solution is needed. In many cases, this solution takes the form of the rail mounted gantry, which allows for the lifting of high and heavy loads over a large loading area. These gantries are also capable of moving suspended loads considerable distances between loading and unloading points.
The heart of the rail-mounted gantry system is a pair of railway-like tracks located parallel to each other. The separation distance between the tracks and their lengths are dictated by the requirements of the loading facility. Rolling over each of the tracks is a tall, sturdy A-frame assembly, the upper parts of which are joined together by a track assembly that supports a cross-travel overhead crane. The overhead crane is then free to move between the posts along the upper rails. In other words, the whole assembly forms an inverted square “U” with the open ends running on the lower rails.
The rail mounted gantry allows excellent flexibility regarding its range of load movements. The crane can lift and lower loads at any point in its range between masts. Once raised, the entire gantry can then move along the lower main rails to offload the cargo at a drop-off point. Both the crane functions and the movement of the gantry track are controlled from an operator station located on the crane assembly. This flexibility makes the rail mounted gantry ideal for loading and unloading containers and other oversized cargo that require both heavy lifting capability as well as increased headroom and travel capability.
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