Kinds 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 can move loads between any areas within the boom's arc of rotation. Light duty units are utilized within factories and warehouses for loads weighing up to 5 tons. The web site BestJibCranes.com features the major kinds of jib cranes 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 could stand by themselves. The horizontal boom in this specific case is attached 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 that is supported by pivot points at the bottom and the top that are attached to the building floor and the overhead steel structure. These jib-cranes provide 360 degrees of rotation with the benefit of not requiring the massive foundation needed for free-standing units.
Wall Mounted
The wall-mounted jib cranes provide a horizontal boom which is connected to the building wall rather than the normal vertical column. These machine are ideal in areas where the full 360 degree rotation is not required and offer up to 200 degrees of rotation.
There are two model varieties, depending on how the boom is supported. One of the types utilizes a tie rod that is connected from above the wall to the boom. The other type supports the boom from below by utilizing a cantilever brace that is connected to the wall also.