Vol. 11, Special Issue 2 (2022)

Methods: Two kinds of anti-vibration measures have been developed to reduce the adverse effects of Hand-Transmitted Vibration (HTV). Styrene-Butadiene Rubber and Neoprene rubber were used to develop anti-vibration measures. The constituents used for these anti-vibration measures were improved into cylinder-shaped isolators based on the load acting on the engine.

Result: To avoid vibration transmission to the handle, cylindrical isolators were situated between the engine and the frame. Maximum vibration in transportation was 27.98 m s^-2 at 2800 rpm and maximum vibration in wheat harvesting was 19.90 m s^-2 at 2200 rpm of engine. The vibration magnitudes were reduced more in case of x-direction, however, in y and z direction the vibration magnitudes were also reduced. Maximum vibration reduction was observed with Neoprene isolator at 2200 rpm (1/2 throttle speed). There was no significant difference between SBR and Neoprene at 2800 rpm (3/4^th throttle speed), however reduction in vibration was above 80 per cent in both materials for transportation.