Wolff Self Erect Cranes Portland

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 which measures up to 20 feet long. Jib cranes are able to 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 BestJibCranes.com website features the major kinds of jib cranes as being either free-standing, wall-mounted or mast 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 specific situation is attached to a pivoting vertical column that is solidly anchored to the building floor. This type of jib crane could rotate a full 360 degrees and needs a foundation made of either steel or concrete.



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 connected to the floor of the building and the overhead steel structure. These jib-cranes provide 360 degrees of rotation with the benefit of not needing the massive foundation needed for free-standing units.



Wall Mounted

The wall-mounted jib cranes provide a horizontal boom that is connected to the building wall as opposed to the normal vertical column. These machine offer up to 200 degrees of rotation and are ideal 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 kinds uses a tie rod that is attached from above the wall to the boom. The other kind supports the boom from below by using a cantilever brace that is also connected to the wall.

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