A knuckle boom crane looks similar to a standard crane. The main difference is that the boom can fold back similar to a finger since the boom articulates at the "knuckle" near the center. This allows the machine to be able to transform into a compact size for maneuvering and storage.
Normally, the arm on a knuckle boom crane is quite a bit lighter than boom truck cranes. The crane arm is designed to allow more payloads to be lifted on the back of the mounted vehicle. Most knuckle boom cranes are mounted behind the cab. This leaves the entire bed of the truck empty.
Smaller models of knuckle boom cranes can be used without a licensed crane operator, if the load capacity of the machinery is less than 15,000 pounds or if the boom's maximum length is less than 25 feet long.
There are different types of control systems for the cranes. Like for instance, there is control from the ground, radio remote control, seated and stand up control. The radio remote systems could operate the crane and starting it. Moreover, numerous models come equipped with a computer readout system that instantly provides system readouts reporting if the crane is overloaded or not.
Personnel Lifts
Snorkel Personnel Lifts are designed for contractors and facilities maintenance professionals. These lifts are lightweight, portable, inexpensive work platforms made for interior use. The patented Girder Lock mast design by Snorkel delivers superb flexibility and excellent reach. This system, used in the UL Series, provides excellent lift capacity.
The Snorkel PAM Series and UL Series Personnel lifts have been designed and built so as to be easy for one person to use. These machines are easy to transport. They could easily pass through a regular sized doorway and be pushed into position smoothly. These lifts are capable of being erected in minutes and can provide working heights of up to 46 feet, they are an efficient alternative to scaffold towers.