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Kinds of Jib Cranes
Jib cranes are made up of a trolley hoist on a horizontal load-bearing boom. This boom is connected to a pivoting vertical member and up to twenty feet long. Jib cranes are able to transport loads between any areas within the boom's arc of rotation. Light duty models are utilized within factories and warehouses for loads weighing as much as 5 tons. The web site BestJibCranes.com showcases the major types of jib cranes as being either free-standing, wall-mounted or mast mounted.
Free Standing
Free-standing jib cranes are able to stand alone not requiring support from the building structure. The horizontal boom in this particular situation is attached to a pivoting vertical column that is solidly anchored to the floor of the building. This type of jib crane needs a foundation made of either steel or concrete and can rotate a full 360 degrees.
Mast-Type
The vertical column on the mast-type jib cranes are supported by pivot points at the bottom and the top. These pivots are connected to the floor of the building and the overhead steel structure. These jib-cranes offer three hundred sixty degrees of rotation with the advantage of not needing the massive foundation required for free-standing units.
Wall Mounted
The wall-mounted jib cranes offer a horizontal boom that is attached to the wall of a building rather than the normal vertical column. These machine offer up to two hundred degrees of rotation and are ideal in places where the full three hundred sixty degree rotation is not required.
Depending on how the boom is supported, there are two model varieties. One type utilizes a tie rod from above the boom that is attached to the wall. The other variety supports the boom from below by using a cantilever brace which is also attached to the wall.
A boom truck utilizes a winch to recover heavy items or transport materials to areas which are usually inaccessible. For example, they are usually utilized maneuvering supplies to a hillside or over a ditch or to reach the top of a building.
A large truck is outfitted with a boom winch. This is mounted in the bed of the truck and then it is capable of transporting construction things and other equipment from street-side to a specific area. There is one more boom truck configuration which is outfitted with a cherry picker. This model enables arborists to easily access treetops.
The Vehicle
The Stinger BT 3063 model has a one hundred thirteen-foot reach and is outfitted with stabilizers and outriggers. A boom truck could range from an aerial work platform that is moved by a hydraulic lifting device which is mounted on the bed, up to a Class 8 tractor-trailer rig with a bucket. It is also possible to have a customized boom lift manufactured for a specific buyer's needs.
Cherry Picker
Cherry pickers are bucket trucks which can raise employees to great heights. Usually, buckets or cherry pickers transport employees from the ground up to high areas like the sides of buildings, treetops, up utility poles or for firefighting and fire department rescue.
Location
The platform on the boom is operated by remote from the truck's cab. Either the boom is mounted on the bed of a large truck or on a separate trailer. Booms which are bigger require outriggers that extend horizontally from the truck so as to level out and stabilize the crane in its operation.
Controls
This kind of boom truck has a cab-over-engine that has a control cluster that can move the boom from inside the cab. It is often a panel in the boom itself on the side of the bed.
