| 摘要 |
<p>An operation room is kept within the turning radius even when its door is opened while not only the size of the opening of the door is secured but also wide space is maintained inside the room. A side (2a) of the operation room (2) that is opposite to a boom of an operation machine mounted on a turning table (1) is formed into an outwardly curved arc including the door (3), and the door (3) is moved by sliding to be freely opened and/or closed, with its opened position being provided on the outer side of the operation room (2) within the turning radius (R) of the turning table (1)</p> |
