Used Wolff Self Erect Cranes Stockton

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 used in 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 free-standing, wall-mounted or mast mounted.

Free Standing
Free-standing jib cranes can stand alone not requiring support from the building structure. The horizontal boom in this particular case is attached to a pivoting vertical column which is firmly anchored to the building floor. This type of jib crane requires a foundation made of either concrete or steel and can rotate a full 360 degrees.

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 needed for free-standing units.

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

There are two model varieties, depending on how the boom is supported. One of the types utilizes a tie rod that is attached from above the wall to the boom. The other type supports the boom from below by utilizing a cantilever brace that is attached to the wall too.

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