Types 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 could move loads between any areas within the boom's arc of rotation. Light duty units are utilized in factories and warehouses for loads weighing as much as 5 tons. The BestJibCranes.com web site showcases the major kinds of jib cranes as being either mast mounted, free-standing or wall-mounted.
Free Standing
Free-standing jib cranes could stand alone not needing support from the building structure. The horizontal boom in this case is attached to a pivoting vertical column which is anchored solidly to the floor of the building. This kind of jib crane could 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 benefit of not needing the massive foundation needed for free-standing units.
Wall Mounted
The wall-mounted jib cranes offer a horizontal boom which is attached to the wall of a building rather than the normal vertical column. These equipments provide up to 200 degrees of rotation and are great in places where the full 360 degree rotation is not needed.
There are two model varieties, depending on how the boom is supported. One of the kinds utilizes a tie rod which is connected from above the wall to the boom. The other kind supports the boom from below by using a cantilever brace which is connected to the wall as well.