| 摘要 |
PURPOSE: An automatic switching apparatus for opening and closing a warm cover of green house is provided for simply manufacturing and installing it and for remarkably saving production cost by winding or releasing a warm cover of greenhouse by using only one motor and clutch device. CONSTITUTION: An automatic switching apparatus for opening and closing a warm cover of greenhouse comprises a warm cover wound on winding axis placed into a reverse-U shaped supporting bar in a greenhouse. The warm cover is wound or released by a drawing rope interlocking with a power driving motor. A driving device having a male clutch is detachably connected to a female clutch of the winding axis to transfer power force to the winding axis. The driving device can interlock a winding drum by a clutch geared with a reversible driving motor to wind or loose a towing wire and then the warm cover without twisting of the wire. |
