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 that 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 models are utilized within warehouses and factories for loads weighing as much as 5 tons. The website BestJibCranes.com features the major jib crane models as being either wall-mounted, mast mounted or free-standing.
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 case is attached to a pivoting vertical column that is solidly anchored to the building floor. This kind of jib crane can rotate a full 360 degrees and needs a foundation made of either steel or concrete.
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 provide 360 degrees of rotation with the benefit of not needing the massive foundation required for free-standing units.
Wall Mounted
Wall mounted jib cranes are attached to the wall of the building rather than supporting a regular vertical column. These cranes provide a horizontal boom. These equipments are ideal in areas where the full 360 degree rotation is not needed and provide 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 connected from above the wall to the boom. The other variety supports the boom from below by utilizing a cantilever brace that is connected to the wall too.