| 摘要 |
<p>PURPOSE:To remarkably reduce the cost of machinery equipment, by providing a travelling truck which runs along a travelling rail astraddly stretched above each pond and a preliminary aeration rotor suspended from said travelling truck. CONSTITUTION:The travelling aerator is constituted with a couple of travelling rails 6 astraddly stretched above each pond 2, a travelling truck 7 running along the directions of the arrows 11, 12 on said rails 6, a preliminary aeration rotor 5 suspended from the truck 7, etc. The preliminary aeration rotor 5 is useful for common preparation. That is, when a main aeration rotor 4 in one of the ponds 2 is stopped for maintenance, repairing or the like, the travelling truck 7 is carried to said pond 2 by the operation of a motor 8 for travelling. Hence, the preliminary aeration rotor 5 is used as a substitute for said rotor 4.</p> |
