| 摘要 |
<p>A hydraulic shovel is configured so that a greater opening can be formed in order to enable a sufficient amount of air to be introduced from an outer cover door and so that the opening can be configured to be closed by louvers without causing high stress in the outer cover door and without increasing weight. A hydraulic shovel is provided with an outer cover door (21), a primary louver (40), and a secondary louver (41). The outer cover door (21) is supported by the frame (25) of the upper rotating body (3) in an openable and closable manner and has a curved surface section (212) in which a secondary opening (212a) is formed.</p> |
