Jib Crane Types
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 transport loads between any areas within the boom's arc of rotation. Light duty models are used inside factories and warehouses for loads weighing as much as 5 tons. The web site BestJibCranes.com features the major jib crane models as being either wall-mounted, mast mounted or free-standing.
Free Standing
The free-standing jib crane units do not require any support from the building structure and can stand by themselves. The horizontal boom in this specific case is attached to a pivoting vertical column that is firmly anchored to the floor of the building. This kind of jib crane requires a foundation made of either concrete or steel 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 360 degrees of rotation with the benefit of not needing the massive foundation required for free-standing units.
Wall Mounted
Wall mounted jib cranes are attached to the building wall instead of supporting a typical vertical column. These cranes provide a horizontal boom. These machine provide up to 200 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 using a cantilever brace which is attached to the wall also.