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Material handling plays an important role job in manufacturing operation. Cranes are essential facilities especially in transporting heavy loads. An overhead travelling crane is widely used owing to its advantages such as light weight and remotecontrolable. Therefore, we choose this type of crane as the subject in this research.
Generally, the crane uses a tendon-driven mechanism to transport cargos. The tendon-driven mechanism comprises chains, pulley, is suspended by cables. As the cargo accelerates or decelerates, it sways like a pendulum due to the inertia effect. Such an unstable phenomenon may cause hazards.
In this research, we propose a method to design an anti-sway structure added between the trolley and the hook to avoid the sway of the crane. The use of the extra structure is to provide stiffness between two ends, so the sway motion is constrained during the transportation. This design achieves the objective of anti-sway without changing the original structure and power devices of the crane. The security in operation can be obtained and production efficiency is increased. In the research, a program is constructed to help analyse and design of an anti-sway device. The specification can be determined based on the working conditions and requirements of this crane. Finally we compare this design with existing alternatives to show its adventages.
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