| 摘要 |
<p>PROBLEM TO BE SOLVED: To control harmful effects on plants and existing buildings during excavation work in a small place by cooling exhaust gases by cooling winds of a radiator fan and then discharging them outside a bonnet. SOLUTION: The revolving work machine is equipped with a revolving table 8 is provided on a traveling device rotatably around a vertical shaft center, a radiator 17 and a radiator fan 26 that supplies cooling winds thereto are provided in a bonnet 11 provided on the revolving table 8, and a muffler 21 to discharge exhaust gas from an engine outside. In such a case, a baffle duct 46, an opening on one side of which faces to the discharge side of the radiator fan 26 and an opening on the other side of which leads to the outside of the bonnet 11, is provided in the bonnet 11, and a tail pipe 45 is connected to the baffle duct 46.</p> |
