Ildiko BRÎNAȘ, Andrei ANDRAȘ, Sorin Mihai RADU, Florin Dumitru POPESCU, Ovidiu- Bogdan TOMUȘ, Dan MANIȚIU


The paper studies the effects of a damping device linking the seat of the operator to the cabin floor of an operating bucket–wheel (BW) excavator. The effects of vibrations on humans were briefly presented first, based on a relevant literature review. Next, to a previously developed and validated model of the BW arm, a cabin model was attached, and accelerations and displacement amplitudes were determined by simulation for the whole assembly, corresponding to the vibrations in all directions produced during the permanent regime of coal excavation. Finally, a virtual device comprised of a seat and its chassis, with a damper placed between, was built. Its behaviour was studied, considering the displacement of the dominant direction Z previously determined, as an input acting on the chassis.

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