Types of Jib Cranes
Jib cranes are made up of a trolley hoist on a horizontal load-bearing boom. This boom is attached to a pivoting vertical member and up to 20 feet long. Jib cranes are able to transport loads between any areas within the boom's arc of rotation. Light duty models are utilized inside warehouses and factories for loads weighing as much as 5 tons. The web site BestJibCranes.com showcases the major kinds of jib cranes as being either free-standing, wall-mounted or mast mounted.
Free Standing
The free-standing jib crane models do not need any support from the building structure and can stand by themselves. The horizontal boom in this situation is connected to a pivoting vertical column which is anchored firmly to the building floor. This kind of jib crane needs 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 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 benefit of not needing the massive foundation needed for free-standing units.
Wall Mounted
The wall-mounted jib cranes offer a horizontal boom that is attached to the wall of a building rather than the regular vertical column. These machine are great 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 utilizes 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 also connected to the wall.