Power tiller: vibration magnitudes and intervention development for vibration reduction

Area of Science:

• Agricultural Engineering
• Occupational Health and Safety
• Biomechanics

Background:

• Power tiller operation involves significant vibration exposure for operators.
• Vibration is transmitted from the machine handle to the operator's upper extremities.
• This exposure can lead to health issues such as white finger syndrome.

Purpose of the Study:

• To quantify vibration levels during different power tiller operations.
• To evaluate the effectiveness of vibration-reducing interventions.
• To assess the impact of interventions on operator health and posture.

Main Methods:

• Experiments were conducted during transportation, tilling with a cultivator, and rota-tilling.
• Vibration measurements were taken in the x-direction under various operational conditions.
• Three intervention materials (polyurethane, rubber, and a combination) were tested to reduce vibration magnitude.

Main Results:

• The highest vibration values were observed in the x-direction, with maximum RMS values ranging from 5.96 to 8.00 ms(-2).
• Rubber interventions achieved the highest vibration reduction, up to 31.21% during transportation.
• Interventions led to improved physiological and postural parameters, though average exposure time for white finger syndrome increased by 28-50%.

Conclusions:

• Rubber-based interventions are most effective in reducing power tiller vibration.
• Vibration reduction interventions show potential for improving operator well-being.
• Further research may be needed to optimize interventions and mitigate increased exposure time risks.