| 摘要 |
<p>Provided is a urea water tank into which urea water can be inserted into the tank main body thereof, even if urea water stored inside the tank main body has frozen. The urea water tank (8) provided in a hydraulic excavator has a normal filling port (83) provided on a side surface (81a) in the upper section of the tank main body (81). A urea water supply pipe (85c) that supplies urea water stored inside the tank main body (81) to a urea SCR system, and an engine cooling water pipe (85e) that supplies engine cooling water to inside the tank main body (81), etc., penetrate the upper surface (81b) of the tank main body (81). In addition, an emergency filling port (86) is provided in the upper surface (81b) of the tank main body (81). This emergency filling port (86) is used to supply urea water to inside the tank main body (81) during an emergency.</p> |
