| 摘要 |
PURPOSE:To relatively lower the exhaust speed supplied from a cooling fan by connecting the right and left air introducing ducts in pairs which extend to the right and left sides, in order to introduce the exhaust into an exhaust ports formed on the both side parts of a bonnet, with a cooling fan. CONSTITUTION:The right and left air introducing ducts 28 and 29 in pairs which extend on the both side parts of a bonnet 2 along the nearly horizontal direction are connected with the both side parts of the casing 18 in a cooling fan 15, and the outer edges of the right and left air introducing ducts 28 and 29 are arranged in the vicinity of the exhaust ports 24 and 26. Further, in the upper part of the casing 18 of the cooling fan 15, an upper air introducing duct 31 which extends upwardly and penetrates through the upper part of the bonnet 2 and is opened towards the front part along the traveling direction 13 is connected. Further, a lower air introducing duct 32 extending downward is connected with the lower part of the casing 18.
|
