In reality, the crane is operated by controlling three cylinder lengths - the inner cylinder, the outer cylinder, and the extension cylinders. The plot below depicts the crane tip’s trajectory during the operating cycle.Ĭrane tip trajectory during operating cycle. The load is initially moved upwards and then drawn inwards to a position that is close to the crane. The operating cycle consists of lifting the payload from a position that is far away and placing it below the crane. In this example, there are two loads applied - self weight in the negative z-direction and a payload of 1,000 kg at the crane’s tip. The figure below provides a more detailed overview of the crane link mechanisms, followed by a table defining the individual components. The crane geometry, which is imported from a CAD model, is comprised of 14 parts that move in relation to one another. Performing a Rigid Body Analysis of a Truck-Mounted CraneĬombining the Multibody Dynamics Module with the Structural Mechanics Module, the Truck Mounted Crane model analyzes the forces on the cylinders and hinges of a crane during an operating cycle. Through simulation, we can explore the impact of these forces during the machine’s operating cycle, determining ways to enhance its performance by building a more efficient design. When handling heavy loads, the components are subjected to large forces. In these types of cranes, there are several hydraulic cylinders that control the motion of the crane as well as many other mechanisms. Licensed under Creative Commons Attribution-Share Alike 2.0 Germany, via Wikimedia Commons.) The concrete component (build in Germany) is a small sewage treatment plant for a house with up to four residents.” by TM - Own work. (“A truck-mounted crane from Palfinger (Austria).
#Small cranes for trucks free#
Truck-mounted cranes are free to move in various directions as well as travel on highways, which can help avoid the need for additional transport equipment.Īn example of a truck-mounted crane. In many applications of this machine - from construction to electric line maintenance - a favorable feature is mobility. See how simulation can help identify the impact of these forces and enhance the crane’s operation.īy design, cranes offer a mechanical advantage, lifting and lowering heavy materials that require strength beyond that of a human. In many cases, this involves carrying heavy materials, which can exert large forces on various parts of the crane. Truck-mounted cranes are often used for load handling.