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 could transport loads between any areas within the boom's arc of rotation. Light duty units are used in warehouses and factories for loads weighing up to 5 tons. The BestJibCranes.com web site features the major kinds of jib cranes as being either wall-mounted, mast mounted or free-standing.
Free Standing
The free-standing jib crane models do not require 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 anchored solidly to the building floor. This type of jib crane requires a foundation made of either steel or concrete and could rotate a full 360 degrees.
Mast-Type
The mast-type jib cranes feature a vertical column which is supported by pivot points at the bottom and the top which are connected to the floor of the building and the overhead steel structure. These jib-cranes offer 360 degrees of rotation with the benefit of not requiring the massive foundation needed for free-standing units.
Wall Mounted
The wall-mounted jib cranes provide a horizontal boom that is attached to the building wall as opposed to the typical vertical column. These equipments provide up to 200 degrees of rotation and are great 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 kinds utilizes a tie rod that is attached from above the wall to the boom. The other type supports the boom from below by utilizing a cantilever brace that is also attached to the wall.