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 that measures up to 20 feet long. Jib cranes can transport loads between any areas within the boom's arc of rotation. Light duty models are used within factories and warehouses for loads weighing up to 5 tons. The web site BestJibCranes.com features the major kinds of jib cranes as being either mast mounted, free-standing or wall-mounted.
Free Standing
Free-standing jib cranes are able to stand alone not requiring support from the building structure. The horizontal boom in this particular case is attached to a pivoting vertical column which is solidly anchored to the floor of the building. This kind of jib crane is able to rotate a full 360 degrees and needs a foundation made of either concrete or steel.
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 benefit of not needing the massive foundation required for free-standing units.
Wall Mounted
Wall mounted jib cranes are connected to the wall of the building instead of supporting a regular vertical column. These cranes provide a horizontal boom. These machine provide up to 200 degrees of rotation and are ideal in places where the full 360 degree rotation is not required.
There are two model varieties, depending on how the boom is supported. One of the types utilizes a tie rod that is connected from above the wall to the boom. The other variety supports the boom from below by using a cantilever brace that is also connected to the wall.