Wolff Self Erect Cranes San Francisco

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 transport loads between any areas within the boom's arc of rotation. Light duty units are utilized inside factories and warehouses for loads weighing up to 5 tons. The web site BestJibCranes.com showcases the major kinds of jib cranes as being either mast mounted, free-standing or wall-mounted.



Free Standing

The free-standing jib crane models do not require any support from the building structure and can stand by themselves. The horizontal boom in this particular case is connected to a pivoting vertical column that is solidly anchored to the floor of the building. This kind of jib crane can 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 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 required for free-standing units.



Wall Mounted

Wall mounted jib cranes are attached to the wall of the building rather than supporting a regular vertical column. These cranes offer a horizontal boom. These equipments are great in areas where the full 360 degree rotation is not needed and provide up to 200 degrees of rotation.



Depending on how the boom is supported, there are two model varieties. One type uses a tie rod from above the boom which is connected to the wall. The other variety supports the boom from below by utilizing a cantilever brace that is also connected to the wall.

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