Jib Crane Models
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 are able to transport loads between any areas within the boom's arc of rotation. Light duty models are utilized inside factories and warehouses for loads weighing as much as 5 tons. The web site BestJibCranes.com showcases the major jib crane types as being either mast mounted, free-standing or wall-mounted.
Free Standing
The free-standing jib crane units do not require any support from the building structure and could stand by themselves. The horizontal boom in this situation is attached to a pivoting vertical column which is solidly anchored to the floor of the building. This type of jib crane needs a foundation made of either steel or concrete and can 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 that are attached to the building floor and the overhead steel structure. These jib-cranes offer 360 degrees of rotation with the benefit of not requiring the massive foundation required for free-standing units.
Wall Mounted
The wall-mounted jib cranes provide a horizontal boom that is attached to the wall of a building as opposed to the typical vertical column. These machine are great in areas where the full 360 degree rotation is not needed and offer up to 200 degrees of rotation.
Depending on how the boom is supported, there are two model varieties. One kind utilizes a tie rod from above the boom which is attached to the wall. The other kind supports the boom from below by using a cantilever brace that is also attached to the wall.