COUNTRYFIELD GREENHOUSE Russian patent published in 2014 - IPC A01G9/20 

FIELD: agriculture.

SUBSTANCE: greenhouse comprises a frame made of profiled metal elements interconnected by screw fasteners that comprise racks, horizontal longitudinal beams, inclined and horizontal crossbars of overlapping connected with each other and with racks in the form of triangular truss frames mounted on the racks. The upper part of the frames is provided with a superstructure in the form of arched ceiling, bearing the roof of a translucent film and forming at the edges of the longitudinal recesses for placement of rolls of the translucent film coating controlled by roof area. The rolls bearing the translucent film are mounted with the possibility of coiling and uncoiling of the film in the overlap of the greenhouse with openings of cellular form using the mechanism made with flexible traction cords. The cords are connected with the structural elements of the rolls, kicked through the blocks mounted on the greenhouse frame elements, and bear handle-balances at the free ends. The cords are kicked each with one turn on the cord-guiding drum. The drums are mounted on trunnions of the rolls. The free edge of the film interacts with a tension cargo unit mounted on the greenhouse frame. Part of the rolls, with which the greenhouse is equipped, is made with a margin of coiling of the film doubly exceeding the area of the roof adjustable by the roll. At that on the inner half of the coiling on the film the aluminium foil is fixed, which reflects the sun rays. The free edge of the outer translucent half of coiling is kicked through the deflecting shaft mounted on the side wall of the greenhouse, and bears an elongated load of the film tensioning.

EFFECT: increased technical capabilities of the greenhouse are provided at different climatic conditions, sharply changing during the season, of the area where the greenhouse is located.

3 cl, 13 dwg