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 are able to move loads between any areas within the boom's arc of rotation. Light duty models are utilized in warehouses and factories for loads weighing as much as 5 tons. The BestJibCranes.com website showcases the major jib crane types as being either free-standing, wall-mounted or mast mounted.
The free-standing jib crane units do not require any support from the building structure and could stand by themselves. The horizontal boom in this particular case is attached to a pivoting vertical column which is firmly anchored to the floor of the building. This type of jib crane can rotate a full 360 degrees and requires a foundation made of either steel or concrete.
The mast-type jib cranes feature a vertical column that is supported by pivot points at the bottom and the top that are connected to the building floor and the overhead steel structure. These jib-cranes offer 360 degrees of rotation with the advantage of not needing the massive foundation required for free-standing units.
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 offer up to 200 degrees of rotation and are ideal 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 which is connected from above the wall to the boom. The other variety supports the boom from below by utilizing a cantilever brace that is attached to the wall too.