Friday, January 11, 2008

Gantry cranes



Single leg, double leg, and mobile types of gantry cranes
Similar to a bridge crane except that it is floor supported at one or both ends instead of overhead (wall) supported
Used to span a smaller portion of the work area as compared to a bridge crane
The supports can be fixed in position or they can travel on runways
Can be used outdoors when "floor" supported at both ends

A gantry crane has a hoist in a trolley which runs horizontally along gantry rails, usually fitted underneath a beam spanning between uprights which themselves have wheels so that the whole crane can move at right angles to the direction of the gantry rails. These cranes come in all sizes, and some can move very heavy loads, particularly the extremely large examples used in shipyards or industrial installations . A special version is the container crane (or "Portainer" crane, named after the first manufacturer), designed for loading and unloading ship-borne containers at a port.

Gantry cranes are designed for lifting and positioning materials. The various types of gantry cranes , including the aluminum gantry crane, the steel gantry crane and the portable gantry crane, are essential for the efficient operation of many industrial facilities. These cranes are similar to overhead cranes except that they have a bridge for carrying the unit's trolley and are usually supported by two or more rigid legs. Additional related equipment that many industrial companies find indispensable include the lifting jib, the hoist trolley, the festoon system, the chain hoist and the portable lift.

The overhead travelling cranes are normally used in the following circumstances:

  • Erection and maintenance operations of the main equipment of pumping stations, hydro-electric power plants, dams and irrigation systems
  • Manoeuvring operations of stoplogs and fixed wheel gates
    Erection and maintenance operations of radial gates.
  • We design and manufacture all types of gantry cranes and overhead travelling cranes, for handling all types of charges and dimensions, with various lifting heights and speeds (controlled by variable speed drives).
  • Both overhead traveling crane and gantry crane are designed according to FEM standards and they can be adapted to all kinds of operation types on customer demand.
  • ALSTOM has developed a parameterised range of cranes up to 500 tons of lifting capacity.
  • We also design and supply the railing system, support beams, over which the cranes travel, and the electrical equipment for operation, control and signalling.

Advantages:

Gantry cranes provide economical material handling in areas where an overhead crane system is not available or practical. Their safety and efficiency make them a frequent choice for production, installation and maintenance applications.


Gantry Crane Features:

Can be moved to almost any location
Cost effective in areas of infrequent lifts
Adjustable heights available from 7'-10'; 10'-12'; 12'-15'; 15'-18'; 18'-20'
Capacities from 1 to 5 ton
Non-marking, 6" diameter durable polyurethane casters are standard and provide for easy movement
Polyurethane wheels roll smoothly even over rough floor surfaces, and can withstand water, oil, and most other chemicals
Bolted beam to upright ensures that beam does not dislodge
Pre-engineered for use with powered hoists

Gantry Crane Applications:

Lifting materials anywhere in a facility
Localized handling
Over machines for maintenance and pulling product
Anywhere lifting equipment is needed on an infrequent basis

58 comments:

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Great post on Gantry cranes. It is a type of crane that utilizes a frame supported by one or two legs to allow for movement of a heavy load. These legs provide the support necessary for safely carrying and maneuvering items, such as containers, pallets, and large-scale machines. They can be used in outdoors locations when an overhead crane cannot be used due to space constraints or lack of appropriate strength while providing the benefit of being able to travel along the tracks they traverse. Gantry cranes have lifting capacities up to five tons. For more details, you can visit Boom & Bucket.

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