The external shading roller is one of the components of the shading system, playing a connecting and fixing role.

Greenhouse accessories, internal and external shading system accessories include external shading frame, electric reducer, external shading curtain, curtain support line, curtain pressing line, transmission shaft, curtain pulling rack and pinion, rack push-pull rod, support roller, drive side aluminum alloy profile, positioning spring clip, weight plate and corresponding connecting accessories, etc.

Compared with the internal shading and insulation system, the external shading system can block the light outside the greenhouse, thus achieving the effect of cooling and shading.

1. The system is mainly suitable for summer shading and cooling, allowing some sunlight to Enter the greenhouse to prevent crops from being scorched by strong light, while reducing the greenhouse temperature.

2. Adjust the opening and closing of the shade net to meet the greenhouse's light requirements.

3. The shade net has hail protection.

Greenhouse accessories, internal and external shading system accessories, external shading frame:

The columns use 50×50×2.0 square tubes, the beams use 50×50×2.0 square tubes, and Ф20 hot-dip galvanized round tubes are used as diagonal bracing between the end columns and the row columns. All steel components are hot-dip galvanized.

Greenhouse accessories, internal and external shading system accessories, external shading and insulation curtain:

The external shading curtain is installed on the top of the greenhouse, 0.5 meters above the ridge. The shading material is a breathable shading curtain with a shading rate of 65% and an energy saving rate of 25%. The sunshade net is a domestically produced black sunshade net with a light shading rate of 70%. It is made of polyethylene and treated with ultraviolet stabilizer and antioxidant. It has the advantages of no unraveling, strong wind resistance, UV resistance,   , good flatness, etc., with a service life of more than 8 years.

Greenhouse accessories, internal and external shading system accessories, drive system:

Rack and pinion drive system, that is, using rack and pinion as the main driving and pulling material. During operation, the electric reducer drives the gear to rotate through the rotating shaft, and the gear drives the rack meshing with it to move. Thus, the push rod connected to both ends of the rack drives the movement of the system's moving side under the traction of the rack, achieving the purpose of opening and closing the shading curtain.

The drive of the internal shading and insulation system in this greenhouse uses a rack and pinion drive system with a stroke of 3700 mm and a speed of 0.4 m/s.

Features of greenhouse accessories, internal and external shading systems:

1. Stable operation and accurate running;

2. Large control area, good control, and good system airtightness;

3. Long service life and convenient later maintenance.