| 摘要 |
<p>PROBLEM TO BE SOLVED: To prevent rain, etc., from entering a transmission case when taking cooling air into the transmission case to ventilate the transmission case, and to simplify a fitting structure and a ventilating and cooling structure of the transmission case. SOLUTION: The transmission case 20 of a spray working machine is disposed below a chemical tank 24 and inside main frames 6L and 6R, and an inlet 133 of cooling air to the transmission case 20 is opened inside the main frames 6L and 6R. The air used for cooling the transmission case 20 is exhausted outside the main frames 6L and 6R.</p> |
