vibration characteristics of mini tractor (8.7 kW) on tar macadam

Abstract

Mini tractor was operated on test tracks duly connected with vibration analyzer sensor at particular component and to prepare the database of vibration spectrum analysis on tar macadam road. Initially, the work was started on mini tractor vibration measurement on different components.  The instrument for vibration analysis used SENDIG-911 portable vibration analyzer.  The MCMe2.H software was used for data recording and analysis work.  The experiment comprising three speed treatments i.e. low speed as 4.17 km h^-1, medium speed as 10.46 km h^-1 and high speed as 14.13 km h^-1.  Experimental statistical analysis was made from completely randomized design (CRD).  The results on tar macadam road revealed that the maximum vibration (peak) with frequency of seat, foot rest, brake, clutch and steering was found as 2.97 m s^-2 (85-102.5 Hz) to 4.14 m s^-2 (77.5-80.5 Hz), 4.19 m s^-2 (77.5-935 Hz) to 6.98 m s^-2 (47.5-755 Hz), 3.15 m s^-2 (110-497 Hz) to 6.26 m s^-2 (95-   820 Hz), 2.69 m s^-2 (374.5-985 Hz) to 4.07 m s^-2 (82.5-467.9 Hz) and 10.34 m s^-2 (5-77.5 Hz) to 14.49 m s^-2 (77.5-80 Hz), respectively under different operating speeds of mini tractor.  The data, trend and percentage variation revealed that vibration on seat and clutch of mini tractor was found increased as forward speed of mini tractor increased and on foot rest, steering and brake, vibration was found decreased as forward speed of mini tractor increased.  Data was compiled and database of vibration characteristics of mini tractor was prepared.

Keywords: vibration, portable vibration analyzer, mini tractor