| 摘要 |
PROBLEM TO BE SOLVED: To provide an apparatus for the opening and lifting of a heat- insulation curtain of a greenhouse capable of stably lifting or lowering the heat-insulation curtain for varying the heat-insulation space in the greenhouse, enabling the automatic opening and closure of the curtain and efficiently controlling the warming space of the greenhouse at night or in the winter season. SOLUTION: The heat-insulation curtain 10 is opened or closed above a lifting frame 3 by the motion of wires 7, 17 wound on winding drums 4, 14 when the lifting shaft 5 and the opening shaft 15 are rotated by the transmission of power from each motor 6, 16 and the lifting frame 3 is lifted or lowered simultaneously with the opening motion. |
