Kinds 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 website BestJibCranes.com showcases the major jib crane types as being either wall-mounted, mast mounted or free-standing.
Free Standing
The free-standing jib crane models do not need any support from the building structure and are able to stand by themselves. The horizontal boom in this situation is attached to a pivoting vertical column which is anchored solidly to the building floor. This type of jib crane is able to rotate a full 360 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 bottom and the top. These pivots are connected to the floor of the building and the overhead steel structure. These jib-cranes provide 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 normal vertical column. These cranes provide a horizontal boom. These machinery provide up to 200 degrees of rotation and are ideal in areas where the full 360 degree rotation is not needed.
There are two model varieties, depending on how the boom is supported. One of the types uses a tie rod which is attached from above the wall to the boom. The other variety supports the boom from below by using a cantilever brace that is connected to the wall too.