Kinds of Jib Cranes
The trolley hoist on a horizontal load-bearing boom are key features on Jib cranes. The boom is secured to a vertical mast that measures 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 in factories and warehouses for loads weighing up to 5 tons. The web site BestJibCranes.com features the major jib crane types as being either mast mounted, free-standing or wall-mounted.
Free Standing
Free-standing jib cranes could stand alone not requiring support from the building structure. The horizontal boom in this specific case is connected to a pivoting vertical column that is solidly anchored to the building floor. This kind of jib crane requires a foundation made of either steel or concrete and is able to rotate a full 360 degrees.
Mast-Type
The vertical column on the mast-type jib cranes are supported by pivot points at the top and the bottom. These pivots are connected 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 required for free-standing units.
Wall Mounted
The wall-mounted jib cranes offer a horizontal boom that is attached to the wall of a building as opposed to the regular vertical column. These machine are ideal in places 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 kinds uses a tie rod which is connected from above the wall to the boom. The other type supports the boom from below by using a cantilever brace which is also connected to the wall.