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 transport loads between any areas within the boom's arc of rotation. Light duty units are utilized inside factories and warehouses for loads weighing up to 5 tons. The website BestJibCranes.com features the major jib crane types as being either free-standing, wall-mounted or mast mounted.
Free Standing
Free-standing jib cranes are able to stand alone not needing support from the building structure. The horizontal boom in this situation is attached to a pivoting vertical column which is anchored firmly to the building floor. This kind of jib crane can 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 provide 360 degrees of rotation with the advantage of not requiring the massive foundation needed for free-standing units.
Wall Mounted
The wall-mounted jib cranes offer a horizontal boom that is connected to the wall of a building as opposed to the regular vertical column. These equipments are great in areas where the full 360 degree rotation is not needed and provide up to 200 degrees of rotation.
Depending on how the boom is supported, there are two model varieties. One kind uses a tie rod from above the boom that is attached to the wall. The other variety supports the boom from below by utilizing a cantilever brace which is attached to the wall also.