Types 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 transport loads between any areas within the boom's arc of rotation. Light duty models are used within warehouses and factories for loads weighing as much as 5 tons. The website BestJibCranes.com showcases the major jib crane types as being either wall-mounted, mast mounted or free-standing.
Free Standing
The free-standing jib crane models do not need any support from the building structure and could stand by themselves. The horizontal boom in this situation is attached to a pivoting vertical column that is solidly anchored to the building floor. This kind of jib crane is able to rotate a full 360 degrees and requires 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 top and the bottom. 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 rather than supporting a typical vertical column. These cranes provide a horizontal boom. These machinery are ideal in areas where the full 360 degree rotation is not required and provide up to 200 degrees of rotation.
There are two model varieties, depending on how the boom is supported. One of the types uses a tie rod which is connected from above the wall to the boom. The other kind supports the boom from below by using a cantilever brace which is attached to the wall as well.