If you are looking to buy an 80t gantry crane, it’s helpful to understand precisely what a gantry crane is, and what different types exist. This will help determine what will be needed for your particular use case, and speak knowledgeably when negotiating the best price.
A gantry crane is a structure that straddles the space or area to be traversed by the overhead gantry crane runway (traveling bridge). A gantry crane(grúa pórtico birraíl) differs from a gantry in that it has no jib and lacks positive vertical support for its traveling gantry.
Gantry cranes are used where there is room for only one standing tower and within buildings because they typically require less headroom than other types of cranes. Gantry cranes are very common in construction yards and warehouses, as well as on many assembly lines. They have also been widely used in shipyards (for fitting out) since the mid-twentieth century, when new taller gantries were being built based on newer, stronger gantry crane designs.
Harbor gantry cranes are a specific type of gantry crane used to load and unload cargo in ports and harbors. They can span the whole width of a large ship, building, or pier. They are also called portal gantry cranes because they normally span one of the ship’s portals (or, more rarely, its centreline).
A gantry may consist of rail-mounted girders with columns along both sides which support a platform; some gantries have only one girder (“single girder”(grúa pórtico monorriel)), while others have two girders (“double girder”). Although these different styles have their individual merits, the most common is the girders one atop the other, with columns supporting a platform between them.
This style is common in gantries designed for maximum strength or minimum weight. Gantries that carry heavy loads (such as on assembly lines) or those gantries requiring a high degree of stiffness to limit deflection caused by wind and traffic loading (on crane bridges) often have this design.
Other types of gantry cranes are:
– Bridge gantry crane: A bridge crane consists of a horizontal beam supported at each end, usually by vertical columns. The payload is hung from cables, typically four per side but sometimes more. Each cable can be attached to the load via a pulley system mounted to the gantry. This gantry type is popular in construction yards for lifting masts and ladders. Some gantries have both bridge and gantry systems to allow the use of a variety of loads, such as building sections, girders, piping, precast concrete panels, or concrete elements on one side while allowing pallets to be loaded on the other side (though this is not often seen) browse this site: https://aicrane.com.mx/grua-de-80-toneladas/.
– Mast gantry crane: A mast gantry crane has its own load-bearing structure, which does not rely on external columns but rather a whole assembly of cranes mounted onto a single large column or mast.
– Rail gantry: The rail gantry uses rails instead of wheels as found in conventional hoists. It may be a gantry that uses rails instead of wheels for load support, or a gantry with girders mounted on rails. It is used most often in marine applications but also on land as well. Its usefulness is limited due to the lack of strength compared to an all-metal gantry crane.
– Suspended gantry: The suspended gantry has a main girder supported by two vertical columns and allows short span gantries to be hung between them (see truss bridge).
– Truss gantry: The truss gantry includes all types of gantries whose beams and columns are connected (or nearly so) by horizontal tie beams, usually to form a lattice structure.
With this background knowledge, it will be easier to conduct your search for an 80t gantry crane and make the best purchase(haz la mejor compra).