| To obtain safety and ride-comfort conditions for tractor operators, the tractor seat suspension system was analyzed and modified to attenuate the vibration transmission. Experiments were conducted on a standard test track to investigate the effect of seat vibration on operators using a small 4-wheel tractor, and to develop a suitable seat suspension system following ISO guidelines. Dynamic and ergonomic effects of vibration on operator using conventional seat and the new design were compared ensuing standard test procedures. The supportive observations on ergonomic aspects were also made, viz. the operator heart rate, postural comfort survey, and Cornell ergonomic seating evaluation. The vibration of existing seat in vertical direction had the highest... |
