subject: How Much Would Mobile Crane Hire Cost You? [print this page] Cranes are one of the most commonly used industrial tools. The construction industry in particular makes the maximum use of the cranes. Cranes are used due to their mobility. They are used to lift and get down heavy items. Cranes allow exceptionally high rates of movement with very small front work. Industries are able to do away with excessive manpower by making use of cranes.
The use and application of cranes dates back to the Roman era. They were used by the Roman kings for building cathedrals. Cranes were also bought to use for making the pedestals of the Egyptian pyramids.
The working of the crane is quite simple. The device consists of a horizontal beam which is attached to a fulcrum. When the force is applied at the longer end of the beam, the shorter end of the beam lifts a specified amount of load. It is however necessary that the ratio of the load to the applied force is equal to the ratio of lengths of both the arms.
With the advancements in technology, several makes and models of cranes are available nowadays. Today, one can find different types of cranes to fulfil different types of work. There is mobile crane, crawler crane, gantry crane, overhead crane, tower crane, rough terrain crane, and many others.
Tower cranes are believed to be the most advanced types of cranes. The equipment is usually fixed to the ground and is sometimes supported by a shaft. A unique feature of these types of cranes is that these are operated with the help of a remote control.
Another advanced model of crane that is being used widely these days in the construction industry is the telescope crane. A telescopic crane has a boom that consists of a number of tubes which are interlocked with one another. A hydraulic mechanism is used that helps expand or contract the tube and regulates the length of the boom.
In some cases, a tower crane is used along with the telescopic crane. While a tower crane is used for construction purpose, the telescopic cranes are used for dismantling the tower cranes at later stage.
Of all, the mobile crane is the most simplistic form of crane. A telescopic boom is mounted on a movable platform and a hook is suspended at one end of the boom for lifting the objects. The boom is operated by the mechanism of lever and pulley.
Mobile cranes are used for lifting transportation, for loading and unloading of various goods, or for the installation of various structures and equipment.
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