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 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 web site BestJibCranes.com features the major types of jib cranes as being either mast mounted, free-standing or wall-mounted.
Free Standing
Free-standing jib cranes could stand alone not needing support from the building structure. The horizontal boom in this particular case is connected to a pivoting vertical column which is anchored solidly to the floor of the building. This kind of jib crane can rotate a full 360 degrees and requires a foundation made of either concrete or steel.
Mast-Type
The mast-type jib cranes feature a vertical column that is supported by pivot points at the top and the bottom which are attached to the building floor and the overhead steel structure. These jib-cranes provide 360 degrees of rotation with the advantage 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 typical vertical column. These cranes provide a horizontal boom. These equipments provide up to 200 degrees of rotation and are great in areas where the full 360 degree rotation is not needed.
Depending on how the boom is supported, there are two model varieties. One type uses a tie rod from above the boom which is connected to the wall. The other variety supports the boom from below by using a cantilever brace that is also connected to the wall.