A SHADOW-FREE TYPE THERMAL CURTAIN SYSTEM IN GREENHOUSE

摘要

PURPOSE: A thermal insulation curtain opening and closing apparatus is provided to prevent the generation of shadows inside a greenhouse, and to smoothly wind and unwind a thermal insulation curtain to a shaft when opening and closing the curtain. CONSTITUTION: A driving unit (110) includes a first driving motor (115) and a second driving motor (116) on the left and right side ground between an outer house and an inner house. The first driving motor rotates a first winding shaft for winding a first thermal insulation curtain (111) forwards and backwards. The second driving motor rotates a second winding shaft (114) for winding a second thermal insulation curtain (112) forwards and backwards. A curtain traction unit (120) ascends and descends the first and second thermal insulation curtains to the driving direction of the driving motors. A wire winding shaft (123) is arranged in parallel with the first winding shaft to rotate in the same direction as the first winding shaft. A first wire (121) is wound to a first upper pulley (124), and one end of the wire is connected to the wire winding shaft. A second wire (122) passes through a second upper pulley closely arranged to the first upper pulley before being connected to the wire winding shaft.