| 摘要 |
An extra hatch (3) is mechanically connected to a refuse chute hatch (2) in an ejection shaft (1), and has an arched shape. When the main hatch is closed, it is positioned closely against the shaft walls. - When the main chute hatch is open, the extra hatch extends over an essential part of the shaft. Its extent laterally is limited so that it does not come into contact withthe shaft edges. |
