Study on the Dynamic Stability of the Excavator Working Device

Objectives: The wide variety of possible work excavator, a large vibration occurs in small movements. The main purpose is to damp the vibrations of the excavator of the working device. Methods/Statistical Analysis: In order to verify the damping performance of the excavator of the working device, using the vibration analysis of the working device model, it was to understand the dynamic characteristics. In addition, this study sought a way to reduce vibration caused by the excavator working device using TMD (Tuned Mass Damper). In this study, it conducted a study on the dynamic stability of the excavator of the working device. Findings: It was determined the dynamic characteristics (natural frequencies and mode shapes) of the excavator working device through the modal analysis. In addition, using a numerical analysis, it was possible to determine the vibrational response from the working device. By using this, comparative analysis for vibrational response of the applied the TMD excavator and apply to not excavator. Depending on the vibration damping, and proposed that it is possible to design a more stable excavator. Improvements/Applications: It is suitable for the design of the excavator working device in consideration of the dynamic stability and vibration reduction. In addition, to reduce the operator’s fatigue caused by the vibration of the excavator.