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 factories and warehouses for loads weighing up to 5 tons. The BestJibCranes.com web site features 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 need any support from the building structure and could stand by themselves. The horizontal boom in this specific case is attached to a pivoting vertical column that is anchored solidly to the building floor. This kind of jib crane could rotate a full 360 degrees and requires 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 advantage of not needing the massive foundation needed for free-standing units.
Wall Mounted
Wall mounted jib cranes are attached to the wall of the building instead of supporting a normal vertical column. These cranes offer a horizontal boom. These machine provide up to 200 degrees of rotation and are great in places 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 uses a tie rod that is connected from above the wall to the boom. The other kind supports the boom from below by using a cantilever brace that is connected to the wall as well.