A soft transmission system of remote bilateral balance compound drive for shading and heat preservation in agricultural greenhouse

Abstract

A long-distance bilateral balance composite drive soft drive system for agricultural greenhouse shading and heat preservation, comprising a power assembly, a guide wheel, a greenhouse skeleton mesh bed, a quilt shaft, a heat preservation quilt, an upper traction rope and a lower traction rope. It is connected with the remote balance compound driver through the guide wheel, the upper traction rope and the lower traction rope respectively; the heat preservation quilt is wound on the quilt shaft; the remote balance composite driver is connected through the quilt shaft; one end of the auxiliary driving rope is fixed in the greenhouse The top and the other end are fixed at the bottom of the greenhouse, and the auxiliary driving rope is wound around the auxiliary driving drum of the remote balancing compound drive; one end of the main driving rope is fixed with the main driving drum of the remote balancing compound drive, and the other end is fixed at the bottom of the greenhouse. The invention provides a guarantee for the development of internal thermal insulation from a push-screen type to a rolling type, greatly improves the effect of internal thermal insulation, saves material costs and installation and maintenance costs, has stable work, uniform stress and high safety factor .

Description

technical field [0001] The invention belongs to the field of agricultural engineering equipment, and in particular relates to a soft transmission system of a remote bilateral balance compound driver used for sunshade and heat preservation in agricultural greenhouses. Background technique [0002] Although the application of transmission technology for heat preservation and shading in agricultural greenhouses in my country has a history of more than 20 years, its application level is very backward, which is extremely incommensurate with the current level of agricultural development in my country. In the specific use of this device, the main problems are: it adopts a unilateral power transmission technology. During operation, the driving device is on one side of the rotating rod of the insulation layer, and the other side of the rotating rod is in a free state, while the other side of the rotating rod is free. The length of the rotating rod is generally more than 15m. In this ...

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Problems solved by technology

[0002] Although the application of transmission technology for heat preservation and shading in agricultural greenhouses in my country has a history of more than 20 years, its application level is very backward, which is extremely disproportionate to the current level of agricultural development in our country

In the specific use of this device, the main problems are: what it adopts is a kind of unilateral power transmission technology. The length of the rotating rod is generally more than 15m. In this way, during the rotating process, due to the superposition of the weight of the rotating rod itself and the weight of the insulation layer, as well as the friction resistance between the insulation layers during the rotation, the torque on the rotating rod is extremely unbalanced. Large deformation and twisting of the drive rod often occur during work, causing great damage to the device and production

2. The rotation direction of the rotating shaft is single. The device is driven by the motor and the reduction device in series, so the power output mode is single. In order to meet the needs of rolling up the insulation layer, the power design is often biased higher than the required power demand, resulting in a certain power waste.

More importantly, in the process of unfolding the insulation layer, since the power is transmitted outward by the drive rod, while the movement is unfolded layer by layer from the outside, this causes the power output and the movement of the insulation layer to be asynchronous, especially In rainy and snowy days, this kind of out-of-sync happens very frequently

In actual production, it is often necessary to use human power to complete the expansion of the insulation layer. Due to the cumulative effect of the previous torque, when the expansion radius of the insulation layer is less than a certain value, the expansion will suddenly accelerate, and this situation can easily cause casualties. ACCIDENT

3. The effect of resource utilization is poor. There must be a set of power equipment in each unit area of ​​heat preservation and shading to be driven. However, power sharing cannot be realized during the transmission process of a greenhouse, resulting in a great waste of resources.

4. The use effect in alpine areas is poor. In the production of agricultural vegetables in relatively alpine areas in my country, in order to improve the effect of heat preservation, double-layer heat preservation measures are also used, but the transmission technology currently used is still the method of unilateral power. Electric film rolls are used to insulate with plastic film. Therefore, in addition to the unbalanced movement of this technology, the span of the roll film is also limited. In addition, the heat conduction of the plastic film is fast, so it is impossible to achieve real insulation in the greenhouse in the alpine region.

5. The production method is not compatible with the high-efficiency agriculture, environmental protection agriculture and green agriculture advocated by the country today. The existing transmission device limits the expansion of the span area of ​​the greenhouse; it makes it difficult to use agricultural machinery in the greenhouse; on the other hand, the existing The device cannot effectively retract and unwind the thermal insulation PE film, resulting in the inability to effectively replace the air in the greenhouse with the outdoor air under the premise of thermal insulation. In the process of agricultural production, it is necessary to manually add dry ice technology to increase the concentration of carbon dioxide in the greenhouse to improve the quality of agricultural products. This in turn causes an artificial increase in the concentration of carbon dioxide in the atmosphere; at the same time, due to the inability to obtain effective air purification in the greenhouse, coupled with the internal environment of high temperature and high humidity, the land mildew and pests and diseases increase, resulting in various pesticides in production. At the same time, it will cause great damage to the health of those engaged in greenhouse production, which is not compatible with the current green and environmentally friendly production methods advocated by the state.

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