Jib Crane Models
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 transport loads between any areas within the boom's arc of rotation. Light duty models are used within factories and warehouses for loads weighing up to 5 tons. The website BestJibCranes.com features the major jib crane types as being either free-standing, wall-mounted or mast mounted.
Free Standing
The free-standing jib crane models do not require any support from the building structure and could stand by themselves. The horizontal boom in this particular case is connected to a pivoting vertical column which is anchored firmly to the floor of the building. This kind of jib crane needs a foundation made of either concrete or steel and can rotate a full 360 degrees.
Mast-Type
The mast-type jib cranes feature a vertical column which is supported by pivot points at the top and the bottom that are connected to the building floor and the overhead steel structure. These jib-cranes provide 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 provide a horizontal boom which is attached to the building wall as opposed to the normal vertical column. These equipments offer up to 200 degrees of rotation and are ideal in areas where the full 360 degree rotation is not needed.
Depending on how the boom is supported, there are two model varieties. One kind uses a tie rod from above the boom that is connected to the wall. The other variety supports the boom from below by utilizing a cantilever brace that is connected to the wall as well.