A Gantry crane is usually a single-stage crane, designed to lift heavy loads vertically. They are most often used in construction projects involving vertical lifts and are favored over other types of crane for their reliability, flexibility, and versatility. They also provide better access to a site with less labor and material cost. Gantries have an extensive history. A Gantry crane typically consists of a platform, a hoist, and several legs or "beam legs." The hoist is responsible for raising and lowering the platform and beam. Most commonly, however, the hoist is equipped with either a drum or chain. The lifting power of gantries can be increased by the addition of adjustable lowering head mechanisms, known as beam collars. These mechanisms allow the operator to control the level of the beam more precisely than with the simple manual adjustment of the legs. In general, the most common uses of gantries and their components are for lighter construction related projects, as well as to lift and place heavier items, such as cars, ships, and telecommunication lines. A Gantry crane has a single mast, which is extended down to a smaller span, known as the stem. This mast, known as the main mast, carries the actual load. It can be folded up or rolled away, to allow access to areas that would otherwise not be accessible from the main mast. A cable rack system is used to provide additional access points on the main mast. Some gantries can also carry an extension ladder from the main mast to other platforms on the plant. There are some limitations to the use of overhead cranes in some fields. For example, there may be some safety issues with overhead cranes carrying heavy loads, such as when one is operating a forklift over a piece of machinery. Gantries can be used to lift lighter loads, but the lifting strength is generally much less. Some gantries, such as the fully articulated arm, are designed so that they can handle lifting loads up to 400 pounds. Many types of gantries are capable of much higher loads, but their exact limits are unknown. Click on this link for more tips on gantry crane operations. Most overhead cranes are powered either pneumatically, hydraulically, or by an electric motor. Pneumatic and electrical power is generally used when the load to be lifted is not very heavy. Hydraulic cranes are generally used in areas where the terrain is extremely hard, such as on mining equipment. Most of these cranes are operated by a series of pulleys, chains, and gears. One of the most common types of Gantry cranes is the straight beam. These are typically used in applications where the weight of the work platform is low and can be controlled with a flip of a lever. This crane has a long, fixed boom that has two legs and a long fixed cable attached to it at the end. The legs of this crane can be telescopic, and the cable can be released to allow the crane to move along a preset path. Check out this post for more details related to this article: https://www.encyclopedia.com/literature-and-arts/art-and-architecture/architecture/gantry.
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