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 could move loads between any areas within the boom's arc of rotation. Light duty units are utilized 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 free-standing, wall-mounted or mast mounted.
Free Standing
The free-standing jib crane units do not need any support from the building structure and are able to stand by themselves. The horizontal boom in this particular situation is attached to a pivoting vertical column that is solidly anchored to the building floor. This kind of jib crane requires a foundation made of either steel or concrete and could rotate a full 360 degrees.
Mast-Type
The vertical column on the mast-type jib cranes are supported by pivot points at the top and the bottom. These pivots are attached to the floor of the building and the overhead steel structure. These jib-cranes offer 360 degrees of rotation with the advantage 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 instead of supporting a normal vertical column. These cranes offer a horizontal boom. These machinery are ideal in areas where the full 360 degree rotation is not required 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 which is connected from above the wall to the boom. The other variety supports the boom from below by using a cantilever brace which is also connected to the wall.