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Types of Jib Cranes
Jib cranes are made up of a trolley hoist on a horizontal load-bearing boom. This boom is attached to a pivoting vertical member and up to 20 feet long. Jib cranes could transport loads between any areas within the boom's arc of rotation. Light duty units are utilized within warehouses and factories for loads weighing up to 5 tons. The BestJibCranes.com web site showcases the major jib crane types as being either mast mounted, free-standing or wall-mounted.
Free Standing
The free-standing jib crane units do not need any support from the building structure and are able to stand by themselves. The horizontal boom in this case is attached to a pivoting vertical column that is firmly anchored to the building floor. This kind of jib crane is able to rotate a full three hundred sixty degrees and needs a foundation made of either steel or concrete.
Mast-Type
The vertical column on the mast-type jib cranes are supported by pivot points at the top and the bottom. These pivots are attached to the building floor and the overhead steel structure. These jib-cranes offer 360 degrees of rotation with the advantage of not requiring the massive foundation required for free-standing units.
Wall Mounted
Wall mounted jib cranes are attached to the building wall instead of supporting a regular vertical column. These cranes offer a horizontal boom. These machinery provide up to two hundred degrees of rotation and are great in areas where the full 360 degree rotation is not required.
There are two model varieties, depending on how the boom is supported. One of the types uses a tie rod that is attached from above the wall to the boom. The other kind supports the boom from below by utilizing a cantilever brace that is also connected to the wall.
A boom truck utilizes a winch to recover heavy things or move supplies to areas which are usually not accessible. For example, they are normally utilized to reach the top of a building, maneuvering supplies over a ditch or to a hillside.
A large truck is equipped with a boom winch. This is mounted in the bed of the truck and then it is capable of transporting construction items and other equipment from street-side to a particular area. There is one more boom truck configuration which is outfitted with a cherry picker. This model enables arborists to access treetops easily.
The Vehicle
Terex's Stinger BT 3063 model has a reach of 113-feet and is outfitted with both stabilizers and outriggers. A boom truck can vary from an aerial work platform which is moved by a hydraulic lifting mechanism which is mounted on the bed, up to a Class 8 tractor-trailer rig with a bucket. It is also possible to have a modified boom lift made to suit the specific needs of the buyer.
Cherry Picker
Cherry pickers or bucket booms enable workers to reach excellent heights. Typically, buckets or cherry pickers move workers from the ground up to high places like for example treetops, the sides of a building, for firefighting and fire department rescue or up utility poles.
Location
The platform on the boom is operated by remote from the truck's cab. Either the boom is mounted on a separate trailer or on the bed of a large truck. Booms that are bigger require outriggers that horizontally extend from the truck so as to stabilize and level out the crane during its operation.
Controls
This type of boom truck has a cab-over-engine that has a control cluster that could move the boom from inside the cab. It is normally a panel in the boom itself on the side of the bed.