| 摘要 |
<p>The movable breeding base for poultry farming has a flexible perforated base plate, support plates being fitted to the two longitudinal edges of the base plate. At their free end, the support plates carry a bearing pin for a roller where the pin is normal to the base plate plane. There is a fixing angle piece for a roller chain between the roller and base plate. The support plates are fixed to the base plate in pairs, at the same level and opposite. Further, the rollers are guided on tracks which extend on both sides along the base plate. Each track has two straight sections, in planes above each other.</p> |
