To Increase the Stability Of A Tractor By Lowering Down the Centre Of Gravity
Journal: International Journal of Analytical, Experimental and Finite Element Analysis (Vol.1, No. 3)Publication Date: 2014-07-15
Authors : Prabhat Giri; Ashish Dewangan; Kunal Shahu;
Page : 42-46
Keywords : Side rollover; Rear rollovers; Entanglements; Drawbar; Run overs;
Abstract
According to the National Institute for Occupational Safety and Health (NIOSH), approximately 250 people per year are killed as a result of agricultural tractor rollovers, run overs, entanglements, and highway collisions. Rollovers account for more than half of these fatalities, despite decades of effort by tractor manufacturers and farm safety professionals to eliminate these tragedies. Approximately 85 percent of all tractor rollovers are side rollovers. Driving too close to an incline or embankment, driving too fast when negotiating a curve, driving the tractor with a loaded front-end loader in the raised position, uneven braking while traveling at high speeds, and losing control of the tractor due to excessive load on the drawbar are the major causes of side rollovers. Studies show that when tractor speed is doubled, the danger of rollover is increased four times. Rear rollovers are particularly dangerous because they happen so quickly. Operators have no time to react to avoid being injured or killed. Research of rear rollovers show that it only takes 0.75 seconds to reach the critical point of no return (i.e., for the Centre of gravity to move over the rear axle and outside the base of stability.) From the time the tractor begins to rollover, the incident can take as little as 1.5 seconds. This can be prevented by increasing the weight on front wheel axel. We find that this can be done by using water filled tyres on front wheel and for further increasing the weight we can use magnesium chloride (MAG) as an additive. MAG can increase the weight of water filled the tyre about 20%, also it is a good antifreeze mixture which proved to be useful if we use water filled tyre along with MAG in low temperature zone.
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