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 that measures up to 20 feet long. Jib cranes are able to move loads between any areas within the boom's arc of rotation. Light duty models are utilized within factories and warehouses for loads weighing as much as 5 tons. The web site BestJibCranes.com showcases the major types of jib cranes as being either mast mounted, free-standing or wall-mounted.
Free Standing
The free-standing jib crane models do not require any support from the building structure and can stand by themselves. The horizontal boom in this specific situation is connected to a pivoting vertical column that is firmly anchored to the building floor. This kind of jib crane needs a foundation made of either steel or concrete and is able to rotate a full 360 degrees.
Mast-Type
The vertical column on the mast-type jib cranes are supported by pivot points at the bottom and the top. These pivots are attached to the floor of the building 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
The wall-mounted jib cranes provide a horizontal boom which is connected to the wall of a building rather than the normal vertical column. These machinery offer up to 200 degrees of rotation and are great 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 uses a tie rod from above the boom which is connected to the wall. The other kind supports the boom from below by using a cantilever brace that is also attached to the wall.