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 can transport loads between any areas within the boom's arc of rotation. Light duty units are used inside factories and warehouses for loads weighing up to 5 tons. The website BestJibCranes.com features the major types 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 situation is attached to a pivoting vertical column which is anchored firmly to the building floor. This type of jib crane can rotate a full 360 degrees and needs a foundation made of either steel or concrete.
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 attached to the building floor and the overhead steel structure. These jib-cranes provide 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 machine provide up to 200 degrees of rotation and are ideal in areas where the full 360 degree rotation is not required.
Depending on how the boom is supported, there are two model varieties. One kind utilizes a tie rod from above the boom which is connected to the wall. The other type supports the boom from below by using a cantilever brace that is attached to the wall also.