Used Wolff Self Erect Cranes Kent

Jib Crane Models
The trolley hoist on a horizontal load-bearing boom are key features on Jib cranes. The boom is secured to a vertical mast which 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 used in warehouses and factories for loads weighing up to 5 tons. The web site BestJibCranes.com showcases the major jib crane types as being either mast mounted, free-standing or wall-mounted.

Free Standing
The free-standing jib crane units do not require any support from the building structure and are able to stand by themselves. The horizontal boom in this particular situation is connected to a pivoting vertical column that is anchored firmly to the building floor. This type of jib crane needs a foundation made of either steel or concrete 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 connected to the building floor and the overhead steel structure. These jib-cranes offer 360 degrees of rotation with the advantage of not needing the massive foundation needed for free-standing units.

Wall Mounted
Wall mounted jib cranes are attached to the building wall rather than supporting a typical vertical column. These cranes offer a horizontal boom. These machine are great in areas where the full 360 degree rotation is not needed 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 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 connected to the wall also.

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