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A knuckle boom crane is typically a truck with a distinct feature of an articulated boom mounted on the platform that looks similar to the knuckle of human fingers. This also implies that the entire flatbed of the truck usually remains vacant.
Furthermore, these trucks can continuously rotate at a 360-degree angles which makes the process of loading and unloading easier and hassle-free.

Connected bar mechanism

Higher lifting capacity with.

Two folding arms

Can it upward(negative elevation angle)&enter a lower space for lifting.

The second section knuckle boom

Cylinder with the reverse arrangement and adopt the flange connection balance value with higher reliability to reduce the leakage point.

Rack cylinder

We adopted an inclined arrangement, the boom in folding state, to fully use space and compact overall structure—the lower center of gravity and vehicle driving stability.