| 摘要 |
PROBLEM TO BE SOLVED: To solve the problems with the cabin of conventional working vehicles, wherein the resonance frequencies are determined by the shape and dimensions of the wall surface forming a space and the conduct, such as changes of dimensions or provision of a partition plate to the space is needed, when the cavity resonance frequencies are changed. SOLUTION: The cabin of the work vehicle is so constituted as to be provided with a rotation sensor 44 which is provided with a resonator matched with the frequency of a high voltage section of the case of the generation of cavity resonance and measures the number of revolutions of an engine 50 of the work vehicle, an actuator 46 which performs opening and closing of the pass partition of an opening portion and a controller 45 which controls the pass partition via the actuator 46, according to the number of revolutions obtained by the rotation sensor 44. COPYRIGHT: (C)2006,JPO&NCIPI
|
