| 摘要 |
PROBLEM TO BE SOLVED: To provide an apparatus for opening and closing a greenhouse without causing a shift in extent of opening and closing of a sheet among a plurality of driving units. SOLUTION: This apparatus 3 for opening and closing the greenhouse is obtained by installing a driving motor 17 and a speed reducer 18 having an output shaft 31 subjected to speed reduction and rotation by driving the driving motor 17 and composing the driving units 5a to 5d. The apparatus 3 is further composed by connecting the output shaft 31 to a sheet winding shaft 37 for winding and unwinding the sheet 2 and installing an output shaft detecting means 50 for detecting the rotated position of the output shaft 31 and a control panel 6 for controlling the driving motor 17 based on a signal detected with the output shaft detecting means 50. When the driving of a plurality of the driving units 5a to 5d is controlled with the single control panel 6 by using the apparatus 3, no shift is caused in the extent of the opening and closing of the sheet 2 among the respective driving units 5a to 5d. Furthermore, adequate temperature control can be realized even in the multi-span plastic greenhouse 1. |
