CN103688796A - Snow-proof external sun-shading system applied to Venlo type multi-span glass greenhouse - Google Patents
Snow-proof external sun-shading system applied to Venlo type multi-span glass greenhouse Download PDFInfo
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- CN103688796A CN103688796A CN201210367972.5A CN201210367972A CN103688796A CN 103688796 A CN103688796 A CN 103688796A CN 201210367972 A CN201210367972 A CN 201210367972A CN 103688796 A CN103688796 A CN 103688796A
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02A—TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE
- Y02A40/00—Adaptation technologies in agriculture, forestry, livestock or agroalimentary production
- Y02A40/10—Adaptation technologies in agriculture, forestry, livestock or agroalimentary production in agriculture
- Y02A40/25—Greenhouse technology, e.g. cooling systems therefor
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Abstract
The invention discloses a snow-proof external sun-shading system applied to a Venlo type multi-span glass greenhouse. An aluminum foil bubble curtain with a sun-shading rate of 70 percent is adopted, and moves along the direction of a ridge. Double-layer plastic-coated [PE/PET/PA (polyethylene/polyethylene terephthalate/polyamide)] steel wire ropes with supporting and windproof functions are adopted, and are fixedly arranged on a metal structural net rack on the roof of the greenhouse at transverse intervals of 30 to 100cm which are determined by the material of the curtain. The metal structural net rack is fixedly arranged on roof gutters, and is higher than roof glass. The aluminum foil bubble curtain for sun shading is driven to move by a pulling roller. The aluminum foil bubble curtain can be reeled under the transmission of the pulling roller according to the magnitude of snowfall on snowy days, snow on the curtain can be transmitted to the ground on the outer side of the greenhouse at a certain time interval, the snow bearing time of the curtain can be set in advance, and the curtain returns to the roof to continue bearing the snow, so that pressure of snow loads on the roof of the greenhouse is greatly reduced (by over 80 percent). The external sun-shading system has the functions of regulating the illuminance, reducing the temperature, preserving heat and reducing the influence of natural disasters such as hailstones and blizzards; the accumulated snow on the roof can be removed in a timing way, so that a lightweight material can be selected for the steel structural design of the greenhouse, and the construction cost is lowered.
Description
Technical field
The present invention relates to a kind of external sunshade system of greenhouse, particularly related to a kind of external sunshade system with snow defence function that civilian Lip river type connects a glass greenhouse that is applied in
Background technology
Attached-greenhouse definition, couples together two above single-ridgepole glasshouses exactly at ridge place, remove the side wall of connecting place, adds eaves gutter, just forms attached-greenhouse.Attached-greenhouse has the soil of saving and construction material, and land utilization rate is higher, and inner space is large, is convenient to the advantages such as mechanical work and multi-layer solid cultivation, is employed more and more.
The concept in Wen Luo (Venlo) type greenhouse comes from Holland, and its basic characteristics are little roofing, can connect, top and surrounding cover high transparent heat insulating material.
This greenhouse is comprised of following major part: basis, greenhouse, greenhouse main body steel construction, cladding material (glass or PC plate), top portion ventilation system, external sunshade system, blower fan forced cooling system, electric control system.
The Taiwan Province of Holland Jin Bi China is bigger, affected by North Atlantic Ocean warm current, and the four seasons are moistening, and precipitation is abundant, and sunshine duration is few, have a narrow range of temperature, summer mean temperature 16 degree, winter average 3 degree, the whole year is substantially frostless.Therefore, take and pursue high illumination as main target in the greenhouse of Holland, makes every effort to utilize most possibly illumination, and heat-insulating property is not had to special requirement in the design of structure and equipment.China is vast in territory, the North of Bei Zhi north temperate zone, continent, and the south belongs to subtropics, the torrid zone.Most places makes a clear distinction between the four seasons, cold in winter and hot in summer, annual range of temperature is large, Climate Anomalies.Under such weather conditions, for whole year production, necessarily require Winter protection, heat, the basic function of sunshade in summer, cooling.
Nearly ten years the insides, China has introduced some greenhouses, civilian Lip river, but due to the infringement of strong wind and heavy snow, some greenhouse has also suffered destruction.The invention belongs to the external sunshade system in greenhouse.
External sunshade system: in summer, the solar radiation thermic load in greenhouse is too high owing to entering, although greenhouse through ventilating, the high temperature in greenhouse, low wet environment are to the growth of plant or disadvantageous; When using external sunshade system, owing to having intercepted most of solar radiation, enter greenhouse, in thering is the greenhouse of good ventilation, indoor temperature can be controlled to only than the level of low 3 ~ 5 ℃ of outside air temperature; External sunshade adopts aluminum foil gas bubble curtain, and its sunshade rate 70%, moves along ridge direction.Adopting double-deck plastic-coated (PE/PET/PA) steel wire rope to rise supports and windbreak function, the horizontal spacing of steel wire rope is 30cm ~ 100cm, (material by curtain decides), be fixed on the metal structure rack on greenhouse roof, metal truss is fixed on gutter, higher than roof glass, the mobile employing carry-over pinch rolls transmission of sunshade curtain.External sunshade cooling-down effect is obviously better than and internal sunshade, has adjusting intensity of illumination, the impact of the natural calamities such as cooling, insulation, reduction hail, wind and snow.The curtain that internal sunshade adopts aluminium foil curtain or other insulation material to make has air space in the greenhouse of separation, and the effect of the volume of air of heating in minimizing greenhouse reaches the function of insulation.
Summary of the invention
Conventionally, the designing requirement in greenhouse is wind load 0.5kN/m2, snow load 0.4kN/m2.In order to reach this requirement, as follows described in patent of the present invention:
The external sunshade system with snow defence function of the present invention, it is comprised of column, plastic coated wire ropes, carry-over pinch rolls, sunshade curtain, transmission device and motor, by column and metal structure rack, be installed on greenhouse roof, column is for supporting and layering plastic coated wire ropes, plastic coated wire ropes rises and supports and windbreak function, by plastic coated wire ropes and carry-over pinch rolls traction ante-venna, the intensity high (being greater than 0.4kN) of steel wire rope, employing is arranged one every a segment distance (30cm ~ 100cm), have very strong capability of anti-wind, safety coefficient reaches more than 6 times; Steel wire rope outer surface is coated with PE/PET/PA material, has high temperature resistant (70 ℃), corrosion-resistant, humidity, has the performances such as low temperature (40 ℃) cracking resistance;
The external sunshade system with snow defence function of the present invention, adopt rolling-type draw-gear that aluminum foil gas bubble curtain is wound up, according to the size of snowfall, at set intervals the snow on curtain is transferred to ground outside greenhouse, it holds the snow time and can set in advance, and turn back to roof and continue to hold snow, to reach, reduce snow load to the pressure of greenhouse end face (more than 80%), thereby can select lightweight material in the Steel Structural Design in greenhouse, to save cost.
The external sunshade system with snow defence function of the present invention, the designed axle cylindrical (diameter at both ends is more smaller than mid diameter) that furls, so that curtain is smooth to both sides expansion in furling curtain process, the accumulated snow on curtain easily comes off.The draw-gear of these both sides is active-passive each other, adopts clutch to transform to guarantee the synchronous operation of both sides; Or both sides draw-gear adopts variable-frequency motor, and active-passive is synchronous to guarantee each other; Or both sides draw-gear adopts ratchet mode to reach a direction initiatively, the passive idle running of another direction, synchronous to reach both sides.
Accompanying drawing explanation
Fig. 1 is the structure chart that the present invention has the external shading device system of snow defence function, and wherein label 1 is column; Mark 2 is plastic coated wire ropes A; Mark 3 is plastic coated wire ropes B, and mark 4 is carry-over pinch rolls; Mark 5 is cylindrical carry-over pinch rolls; Mark 6 is sunshade curtain; Mark 7 is transmission device; Mark 8 is motor.
Embodiment
As shown in Figure 1, the external sunshade system with snow defence function, it is by column 1, plastic coated wire ropes A2, plastic coated wire ropes B3, carry-over pinch rolls 4, cylindrical carry-over pinch rolls 5, sunshade curtain 6, transmission device 7 and motor 8 form, its central post 1 is for supporting and layering plastic coated wire ropes A2, plastic coated wire ropes A2 rises and supports and windbreak function, plastic coated wire ropes B3 and cylindrical carry-over pinch rolls 5 are for drawing ante-venna 6, carry-over pinch rolls 4 use folding and unfolding plastic coated wire ropes B3, according to sunshade curtain 6 materials, the horizontal spacing of steel wire rope is set as to 30cm ~ 100cm, be fixed on the metal structure rack on greenhouse roof, metal structure rack is fixed on gutter, higher than roof glass, the mobile employing carry-over pinch rolls transmission of sunshade curtain.
Claims (3)
1. one kind is applied in the external sunshade system with snow defence function that civilian Lip river type connects a glass greenhouse, it is by column (1), plastic coated wire ropes A(2), plastic coated wire ropes B(3), carry-over pinch rolls (4), cylindrical carry-over pinch rolls (5), sunshade curtain (6), transmission device (7) and motor (8) form, its central post (1) is for supporting and layering plastic coated wire ropes, plastic coated wire ropes B(3) and cylindrical carry-over pinch rolls (5) for drawing ante-venna, it is characterized in that: adopt double-deck plastic-coated (PE/PET/PA) steel wire rope to rise and support and windbreak function, the horizontal spacing of steel wire rope is 30cm ~ 100cm, (material by curtain decides), be fixed on the metal structure rack on greenhouse roof, metal structure rack is fixed on gutter, higher than roof glass, the mobile employing carry-over pinch rolls transmission of sunshade curtain.
2. be as claimed in claim 1ly applied in the external sunshade system with snow defence function that civilian Lip river type connects a glass greenhouse, it is characterized in that: this furls axle cylindrical (diameter at both ends is more smaller than mid diameter), so that curtain is smooth to both sides expansion in furling curtain process, the accumulated snow on curtain easily comes off
,the draw-gear of these both sides is active-passive each other, adopts clutch to transform to guarantee the synchronous operation of both sides; Or both sides draw-gear adopts variable-frequency motor, and active-passive is synchronous to guarantee each other; Or both sides draw-gear adopts ratchet mode to reach a direction initiatively, the passive idle running of another direction, synchronous to reach both sides.
3. be as claimed in claim 2ly applied in the external sunshade system with snow defence function that civilian Lip river type connects a glass greenhouse, it is characterized in that: adopt rolling-type draw-gear that ante-venna cloth is wound up, according to the size of snowfall, at set intervals the snow on curtain is transferred to ground outside greenhouse, it holds the snow time and can set in advance, and turn back to roof and continue to hold snow, significantly to reduce the pressure of snow load to greenhouse end face, thereby make can select lightweight material in the Steel Structural Design in greenhouse, to save cost.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210367972.5A CN103688796A (en) | 2012-09-27 | 2012-09-27 | Snow-proof external sun-shading system applied to Venlo type multi-span glass greenhouse |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210367972.5A CN103688796A (en) | 2012-09-27 | 2012-09-27 | Snow-proof external sun-shading system applied to Venlo type multi-span glass greenhouse |
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| CN103688796A true CN103688796A (en) | 2014-04-02 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201210367972.5A Pending CN103688796A (en) | 2012-09-27 | 2012-09-27 | Snow-proof external sun-shading system applied to Venlo type multi-span glass greenhouse |
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Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105493961A (en) * | 2016-01-29 | 2016-04-20 | 青岛永诺农业机械有限公司 | Greenhouse heat preservation membrane control mechanism and mounting method thereof |
| CN105544886A (en) * | 2015-12-21 | 2016-05-04 | 中国农业大学 | Automatic wind power snow removing equipment and method for sunlight greenhouse |
| CN108651094A (en) * | 2018-05-17 | 2018-10-16 | 土山土水生态农业江苏有限公司 | A kind of gear snow device of greenhouse |
| CN108849119A (en) * | 2018-07-25 | 2018-11-23 | 北京农业智能装备技术研究中心 | Heliogreenhouse curtain system |
| CN109272711A (en) * | 2018-08-15 | 2019-01-25 | 安徽农业大学 | Farm buildings structure warning processing system |
| CN110249863A (en) * | 2019-06-11 | 2019-09-20 | 广东省现代农业装备研究所 | A kind of greenhouse shade open-and-close mechanism |
| CN111321850A (en) * | 2020-03-11 | 2020-06-23 | 五冶集团上海有限公司 | Construction method of steel structure roof steel wire mesh |
| CN113383664A (en) * | 2021-05-17 | 2021-09-14 | 海南大学 | Wind, snow and heavy rain resistant and efficient ventilation film greenhouse building and use method thereof |
-
2012
- 2012-09-27 CN CN201210367972.5A patent/CN103688796A/en active Pending
Cited By (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105544886A (en) * | 2015-12-21 | 2016-05-04 | 中国农业大学 | Automatic wind power snow removing equipment and method for sunlight greenhouse |
| CN105544886B (en) * | 2015-12-21 | 2017-07-07 | 中国农业大学 | A kind of heliogreenhouse wind-force automatic snow apparatus and method for |
| CN105493961A (en) * | 2016-01-29 | 2016-04-20 | 青岛永诺农业机械有限公司 | Greenhouse heat preservation membrane control mechanism and mounting method thereof |
| CN105493961B (en) * | 2016-01-29 | 2018-08-31 | 青岛永诺农业机械有限公司 | Heat-insulating film for greenhouse control mechanism and its installation method |
| CN108651094A (en) * | 2018-05-17 | 2018-10-16 | 土山土水生态农业江苏有限公司 | A kind of gear snow device of greenhouse |
| CN108849119A (en) * | 2018-07-25 | 2018-11-23 | 北京农业智能装备技术研究中心 | Heliogreenhouse curtain system |
| CN109272711A (en) * | 2018-08-15 | 2019-01-25 | 安徽农业大学 | Farm buildings structure warning processing system |
| CN110249863A (en) * | 2019-06-11 | 2019-09-20 | 广东省现代农业装备研究所 | A kind of greenhouse shade open-and-close mechanism |
| CN111321850A (en) * | 2020-03-11 | 2020-06-23 | 五冶集团上海有限公司 | Construction method of steel structure roof steel wire mesh |
| CN113383664A (en) * | 2021-05-17 | 2021-09-14 | 海南大学 | Wind, snow and heavy rain resistant and efficient ventilation film greenhouse building and use method thereof |
| CN113383664B (en) * | 2021-05-17 | 2023-01-31 | 海南大学 | Wind, snow and heavy rain resistant and efficient ventilation film greenhouse building and use method thereof |
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Application publication date: 20140402 |