Investigation of Vibration Characteristics of Hand Tractor Based on Frequency-domain and Vibration Intensity

Abstract

The use of hand tractors on small and mid-sized Cambodian farms has increased remarkably and provides a labor saving and improvement of work efficiency for the operator. The present study investigated the translational accelerations of hand tractors at 7 different measurement points, as well as their engine speeds under a stationary condition. The results showed that the vibration magnitude was the greatest at the top of the engine along the lateral axis at low frequencies, followed by the handgrip along the vertical axis at different frequencies corresponding to the engine speed. The RMS of hand-arm vibration exposure was extremely higher than those stated in the health guidance zone at all engine speeds. Thus, anti-vibration measures should be introduced.