| 摘要 |
The purpose of the present invention is to solve problems of an existing vinyl greenhouse and thus prevent the collapse of the vinyl greenhouse and reduce the damage and loss due to heavy snow. To this end, one vinyl sheet is additionally installed on the roof of the vinyl greenhouse and the tilt angle of the vinyl sheet is increased at the time of heavy snow. Therefore, the damage of the vinyl greenhouse due to heavy snow can be effectively prevented; the installation cost of the vinyl greenhouse and the power consumption for automatic operation are less when compared with the other similar patents; and the operation manner is simple. |
