Spherical greenhouse sunshade net and sun-shading method thereof

Abstract

The invention relates to a spherical greenhouse sunshade net. The greenhouse sunshade net comprises a light supporting shaft assembly (1), a side pull steel cable (2), a fan-shaped sunshade net body (3), a sensor assembly and sunshade net body control devices. The light supporting shaft assembly (1) comprises a light roller (4) and a transverse pull steel cable (5). The transverse pull steel cable (5) sequentially penetrates through through holes, and two ends of the transverse pull steel cable (5) are fixedly connected with the side pull steel cable (2). Two sides of the fan-shaped sunshade net body (3) are fixed on the side pull steel cable (2). The sensor assembly is arranged inside an annular support. The sunshade net body control devices are installed on the periphery of the bottom of a thin film support and connected with the side pull steel cable (2) in a transmission mode. Besides, the sunshade net body control devices are connected with the sensor assembly. A sun-shading method comprises the following steps: detecting environmental indexes, judging, sun-shading and collecting the net. The spherical greenhouse sunshade net and the sun-shading method have the advantages of being simple in structure, low in manufacturing cost, unnecessary in changing the original structure, and good in sun-shading effect.

Description

technical field [0001] The invention relates to a sunscreen device and method for a greenhouse, in particular to a spherical greenhouse sunshade net and a sunshade method thereof. Background technique [0002] With the emergence of high molecular polymers - polyvinyl chloride and polyethylene, plastic films are widely used in agriculture. In the early 1950s, Japan, Europe and the United States successfully applied films to cover hotbeds, and then covered small sheds and greenhouses with good results. At present, greenhouses have been used for potted flower and cut flower cultivation; fruit tree production is used for cultivating grapes, strawberries, watermelons, melons, peaches and citrus, etc.; forestry production is used for tree seedling cultivation and ornamental tree cultivation; Chicken, cattle, pigs, fish and fry, etc. [0003] Generally, the greenhouse frame is covered with a film to prevent cold. In winter, the temperature inside the shed mainly comes from solar ...

AI Technical Summary

Problems solved by technology

[0003] Generally, the greenhouse frame is covered with a film to prevent cold. In winter, the temperature inside the shed mainly comes from solar radiation, but in summer, the temperature outside the shed is high, and the air in the shed is not circulated. The plants in the shed are prone to yellowing, Withering and other phenomena, even if the film is uncovered and ventilated, the plants cannot bear the strong light

In addition, in the arid areas of northern my country, the temperature difference between day and night is large, which greatly increases the frequency of film uncovering and covering, which is not easy to manage, and the service life of the film is greatly reduced.

[0004] Chinese patent application number: 201210573160.6 discloses a greenhouse temperature control system, which includes a cold and hot switch, a dual-purpose thermal storage box for hot and cold water, a hot and cold air circulation distribution machine, and an air supply and exhaust system, using a unique cold and heat switch The dual-purpose thermal storage box for cold and hot water, the dual-purpose thermal storage box for cold and hot water transports cold energy or heat to the greenhouse through the hot and cold air circulation distribution machine and the air supply and exhaust system, which can make the greenhouse or other places The indoor temperature can be adjusted freely, and the temperature can be cooled or heated up quickly in a short period of time. However, the cost of this temperature control system is high, and ordinary greenhouse owners cannot bear such economic pressure.

[0005] Chinese patent application number: 200910218963.8 discloses a kind of large-area automobile sunshade net and using method, it comprises sunshade net body, support stay cord and support column, artificial sunshade net body is built on the support column, and fixes with support stay cord, this This structure adopts the method of artificial netting, which is only aimed at many automobiles for sun protection, energy saving and emission reduction, but for large greenhouses, the sunshade net is not applied to greenhouses for sun protection, and artificial netting will be difficult to achieve

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