| Abstract |
In this report, I have measured vibro-acceleration occured at the driver's seat. As the fundamental experiment, what kind of vibrated effects suffered operators, who worked with wheel tractors, was so...lved. From the results of this test, the followings were obtained. (1) When the engine ran at high velocity revolution, the vibro-acceleration of vertical derection was remarkably high. (2) Structural properties of driver's seat appeared distinctly; that is, vibro-acceleration of horizontal direction at the elbow had a tendency to become remarkably high and at the back that of forward and rear direction showed a similar tendency. (3) As driving speed of wheel tractor increased, vibro-acceleration increased too. (4) In case of braking when tractor was running, operator received impact tolerably. (5) When tractor ran getting over obstacles, vibro-acceleration increased remarkably. Next I am going to measure vibro-acceleration which may occur in real working. A further study must investigate the ride comfort of wheel tractor working in the forest.show more
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