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 20 feet long. Jib cranes can move loads between any areas within the boom's arc of rotation. Light duty models are utilized inside factories and warehouses for loads weighing up to 5 tons. The BestJibCranes.com web site features the major types of jib cranes as being either wall-mounted, mast mounted or free-standing.
Free Standing
Free-standing jib cranes can stand alone not requiring support from the building structure. The horizontal boom in this particular situation is connected to a pivoting vertical column which is anchored solidly to the floor of the building. This type of jib crane can rotate a full 360 degrees and needs a foundation made of either concrete or steel.
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 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 needed for free-standing units.
Wall Mounted
The wall-mounted jib cranes offer a horizontal boom that is attached to the building wall as opposed to the normal vertical column. These machinery offer up to 200 degrees of rotation and are great in places where the full 360 degree rotation is not required.
There are two model varieties, depending on how the boom is supported. One of the kinds utilizes a tie rod that is attached from above the wall to the boom. The other variety supports the boom from below by using a cantilever brace that is attached to the wall also.