WO2019162650A1 - Système de tension - Google Patents

Système de tension Download PDF

Info

Publication number
WO2019162650A1
WO2019162650A1 PCT/GB2019/050395 GB2019050395W WO2019162650A1 WO 2019162650 A1 WO2019162650 A1 WO 2019162650A1 GB 2019050395 W GB2019050395 W GB 2019050395W WO 2019162650 A1 WO2019162650 A1 WO 2019162650A1
Authority
WO
WIPO (PCT)
Prior art keywords
tensioning
tensioning member
ropes
straps
polytunnel
Prior art date
Application number
PCT/GB2019/050395
Other languages
English (en)
Inventor
Rolly WHATTON
Original Assignee
Haygrove Limited
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Haygrove Limited filed Critical Haygrove Limited
Priority to CN201980005017.7A priority Critical patent/CN111246727A/zh
Publication of WO2019162650A1 publication Critical patent/WO2019162650A1/fr

Links

Classifications

    • A—HUMAN NECESSITIES
    • A01—AGRICULTURE; FORESTRY; ANIMAL HUSBANDRY; HUNTING; TRAPPING; FISHING
    • A01G—HORTICULTURE; CULTIVATION OF VEGETABLES, FLOWERS, RICE, FRUIT, VINES, HOPS OR SEAWEED; FORESTRY; WATERING
    • A01G9/00—Cultivation in receptacles, forcing-frames or greenhouses; Edging for beds, lawn or the like
    • A01G9/14—Greenhouses
    • A01G9/1407—Greenhouses of flexible synthetic material
    • A—HUMAN NECESSITIES
    • A01—AGRICULTURE; FORESTRY; ANIMAL HUSBANDRY; HUNTING; TRAPPING; FISHING
    • A01G—HORTICULTURE; CULTIVATION OF VEGETABLES, FLOWERS, RICE, FRUIT, VINES, HOPS OR SEAWEED; FORESTRY; WATERING
    • A01G9/00—Cultivation in receptacles, forcing-frames or greenhouses; Edging for beds, lawn or the like
    • A01G9/14—Greenhouses
    • A01G9/16—Dismountable or portable greenhouses ; Greenhouses with sliding roofs
    • A—HUMAN NECESSITIES
    • A01—AGRICULTURE; FORESTRY; ANIMAL HUSBANDRY; HUNTING; TRAPPING; FISHING
    • A01G—HORTICULTURE; CULTIVATION OF VEGETABLES, FLOWERS, RICE, FRUIT, VINES, HOPS OR SEAWEED; FORESTRY; WATERING
    • A01G9/00—Cultivation in receptacles, forcing-frames or greenhouses; Edging for beds, lawn or the like
    • A01G9/24—Devices or systems for heating, ventilating, regulating temperature, illuminating, or watering, in greenhouses, forcing-frames, or the like
    • A01G9/241—Arrangement of opening or closing systems for windows and ventilation panels
    • A01G9/242—Arrangement of opening or closing systems for windows and ventilation panels for greenhouses with flexible coverings
    • 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

Definitions

  • This invention relates to a tensioning system, and in particular to a tensioning system for use with a polytunnel structure and operable to allow adjustment of the tensioning of the ropes, straps or the like used to anchor a cover of the polytunnel structure in position.
  • polytunnel structure in common use takes the form of a series of cover support member, typically of arcuate form and usually mounted to the upper ends of legs such that the cover support members are supported above the ground at a desired height.
  • a cover material for example of a suitable flexible plastics material sheet is supported upon the cover support members, the cover material adopting a profile similar in shape to the shapes of the cover support members.
  • the cover support members are of arcuate form and result in the cover material adopting a substantially part cylindrical form. Straps, ropes or the like are used to anchor the cover material in position. The ropes, straps or the like extend over the cover material and are anchored to parts of the support structure of the polytunnel structure.
  • ropes, straps or the like typically extend in a zig-zag fashion along the length of the polytunnel.
  • the ropes, straps or the like are tensioned to tension the cover material.
  • cover material In some polytunnel structures there is a desire to be able to roll up parts of the cover material, for example to increase ventilation to the interior of the polytunnel structure. As, in the event of rain or high winds, there may be a wish to return the cover material to its original position in order to provide protection to crops within the polytunnel against damage, there may be a need to roll up and unroll parts of the cover material on a regular basis, for example in some circumstances it may be desired to undertaken adjustments several times a day.
  • a tensioning system for use with a polytunnel structure, the tensioning system comprising a tensioning member extending along the length of at least part of the polytunnel structure, the tensioning member being rotatable about its axis, the tensioning member including, at intervals along its length, anchor points to which ropes, straps or the like can be secured.
  • the ropes, straps or the like associated with two adjacent polytunnel structures are anchored to the anchor points of a single tensioning member. Accordingly, the tension of the ropes, straps or the like associated with both polytunnel structures can be adjusted in a single operation.
  • the tensioning member is adapted to allow it to be driven for rotation by an electrically powered motor.
  • a hand operated crank or the like may be provided to aid manual rotation of the tensioning member.
  • the tensioning member is preferably supported for rotation within the gutter.
  • it may be supported by brackets secured to the gutter and/or to legs supporting the gutter.
  • the invention also relates to a polytunnel structure including such a tensioning system, the system being operable to adjust the tension of anchor ropes, straps or the like used to anchor a cover material sheet in position.
  • a second, adjacent polytunnel structure may be provided, the tensioning system simultaneously adjusting the tension of the ropes, straps or the like associated with both structures.
  • a method of adjusting the tension an anchor rope, strap or the like comprising providing a tensioning system as set out hereinbefore, and rotating the tensioning member thereof to adjust the tension in the rope, strap or the like.
  • Figure 1 is a diagrammatic representation illustrating a tensioning system in accordance with an embodiment of the invention employed in a polytunnel structure
  • Figure 2 is a view to an enlarged scale illustrating part of the system of Figure 1;
  • FIG. 3 is a plan view illustrating part of the system of Figure 1.
  • the accompanying drawings illustrate part of two adjacent polytunnel structures 10, 10'.
  • Each polytunnel structure 10, 10' comprises a series of cover support members 12, each of which is of arcuate form and is supported, at its ends upon legs 14.
  • Each leg 14 includes, at its upper end, a U-shaped section defining limbs over which end parts of the cover support members 12 are fitted to secure the cover support members 12 in position.
  • a cover material 16 extends over the cover support members 12 of each polytunnel structure 10, 10'.
  • the lower edges of the cover material 16 are wound around respective rollers 18. It will be appreciated that rotation of the rollers 18 results in the cover material 16 being rolled up on to the rollers 18, or unrolled from the rollers 18, depending upon the direction of rotation, and that accordingly the level of ventilation provided to the interior of the polytunnel structure can be adjusted.
  • the U-shaped sections of the legs 14 together support a rainwater gutter member 20 positioned to collect rainwater draining from the cover material 16, in use, carrying the collected rainwater to an end of the polytunnel structure or other convenient location, for example for collection and subsequent use for irrigation of crops growing within the polytunnel structure.
  • an elongate tensioning member 22 in the forms of a steel tube, rod or bar of, for example, circular cross section. It will be appreciated, that other materials and other shapes of material may be used without departing from the scope of the invention.
  • the tensioning member 22 is secured in position by brackets 24 which extend over the tensioning member 22 and which are anchored by suitable threaded fasteners to the legs 14. Whilst this represents one manner in which the tensioning member 22 may be secured and supported in position, it will be appreciated that other securing techniques may be used. The primary requirement of the securing technique used is that the tensioning member 22 may be rotated about its axis, in use. Located at intervals along the length of the tensioning member 22 are anchor points in the form of hooks 26 or the like to which anchoring ropes or straps 28 that extend over the cover material 16 of the polytunnel structures 10, 10' may be secured.
  • the anchor ropes, straps or the like 28 of both of the polytunnel structures 10, 10' are attached to or wound around the hooks 26 in a manner similar to that typically used when attaching the ropes, straps or the like to anchor points fixed to the legs of a polytunnel structure, the ropes, straps or the like taking on a zig zagged formation.
  • Tensioning of the ropes or straps 28, and hence of the cover material 16, is achieved by rotating the tensioning member 14 about its axis. Such rotation results in parts of the ropes, straps or the like 28 becoming wound around the tensioning member 14.
  • the tensioning member 14 When it is desired to adjust the level of ventilation in the polytunnel structures 10, 10', the tensioning member 14 is rotated in the reverse direction, unwinding at least some of the rope or strap material therefrom, and so reducing the tension in the ropes, straps or the like, and in the cover material 16. Once the tension in the ropes, straps or the like 28 has been released to a desired degree sufficient to allow rotation of the rollers 18, the rollers 18 can be rotated to roll up or unroll the cover material 16 to adjust the level of ventilation to the desired degree. Once rotation of the rollers 18 has been completed, the tensioning member 14 is rotated to wind parts of the ropes, straps or the like 28 onto the tensioning member 14, tensioning the ropes, straps or the like 28 to the desired degree.
  • the tensioning of the ropes, straps or the like 28 serves to secure the cover material 16 in position, tensioning the cover material 16, and also to secure the rollers 18 against movement, avoiding undesired rotation thereof and so ensuring that the level of ventilation is maintained at the desired level.
  • the use of the invention is advantageous in that the operation to adjust the tensioning of the ropes, straps or the like 28 can be undertaken simply and quickly, in a labour efficient manner.
  • rotation of the tensioning member 14 may be undertaken in a motorised fashion for example using an electrically powered motor and gearbox to drive the tensioning member for rotation.
  • a hand operated crank or the like may be fitted to the tensioning member to aid rotation thereof.
  • the invention allows the tensioning of the ropes, straps or the like of two adjacent structures to be adjusted in a single operation, further simplifying the operation of adjusting the ventilation of the polytunnel structures. It will be appreciated, however, that if desired only the anchor ropes, straps or the like of a single polytunnel structure may be secured to the tensioning member.
  • the ropes, strap or the like 28 may be anchored to anchor points associated with the legs 14 or other parts of the polytunnel structure in substantially the usual fashion.
  • anchor points associated with the legs 14 or other parts of the polytunnel structure in substantially the usual fashion.
  • the tensioning system may also be used when completely deskinning a polytunnel structure, if desired.

Landscapes

  • Life Sciences & Earth Sciences (AREA)
  • Environmental Sciences (AREA)
  • Building Awnings And Sunshades (AREA)
  • Greenhouses (AREA)
  • Tents Or Canopies (AREA)

Abstract

L'invention concerne un système de tension destiné à être utilisé avec une structure polytunnel, le système de tension comprenant un élément de tension (22) s'étendant le long de la longueur d'au moins une partie de la structure polytunnel, l'élément de tension (22) pouvant tourner autour de son axe, l'élément de tension (22) comprenant, à des intervalles donnés le long de sa longueur, des points d'ancrage (26) auxquels des cordes, des sangles ou similaires (28) peuvent être fixées.
PCT/GB2019/050395 2018-02-22 2019-02-14 Système de tension WO2019162650A1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN201980005017.7A CN111246727A (zh) 2018-02-22 2019-02-14 张紧系统

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
GB1802892.8A GB2571289B (en) 2018-02-22 2018-02-22 Tensioning system
GB1802892.8 2018-02-22

Publications (1)

Publication Number Publication Date
WO2019162650A1 true WO2019162650A1 (fr) 2019-08-29

Family

ID=61903327

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/GB2019/050395 WO2019162650A1 (fr) 2018-02-22 2019-02-14 Système de tension

Country Status (3)

Country Link
CN (1) CN111246727A (fr)
GB (1) GB2571289B (fr)
WO (1) WO2019162650A1 (fr)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN114223652B (zh) * 2021-12-28 2022-11-25 内蒙古农业大学 一种自感应脱水式园林植物标本夹及使用方法

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH0937659A (ja) * 1995-08-02 1997-02-10 Tokan Kogyo Co Ltd ハウス用フィルム巻上げ装置
JP2002171843A (ja) * 2000-12-07 2002-06-18 Nichino Kogyo Kk ビニールハウスの開閉装置
JP2005052082A (ja) * 2003-08-05 2005-03-03 Yoshimi Hayakawa ビニールハウス
WO2005027620A1 (fr) * 2003-09-23 2005-03-31 Republic Of Korea(Management: Rural Development Administration) Systeme d'ouverture automatique de toiture souple a plusieurs travees

Family Cites Families (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB1447043A (en) * 1972-11-15 1976-08-25 Wilson P Flexible sheet housing structures
US4769877A (en) * 1986-05-15 1988-09-13 Conley John L Gripper with innerlock
JPH02177825A (ja) * 1988-12-29 1990-07-10 Tomoaki Tanaka 温室ハウスにおける内張りフイルムの開閉誘導方法並びに内張りフイルムの開閉誘導装置
CN2377831Y (zh) * 1999-02-15 2000-05-17 王国斌 日光温室加毡机构自动控制装置
FR2824347B1 (fr) * 2001-05-04 2003-08-08 Filclair Sa Dispositif de couverture reversible de toiture de batiments de type serre par une bache
JP2003023877A (ja) * 2001-07-18 2003-01-28 Nakasuga Shubyo Kk シート固定装置
FR2919646B1 (fr) * 2007-08-01 2009-09-11 Ferrari S Tissage & Enduct Sa Paroi souple a doubles peaux et dispositif de maintien sous tension d'une paroi souple a doubles peaux
KR20120021112A (ko) * 2010-08-31 2012-03-08 (주)디에스소프텍 단동 비닐하우스용 보온장치
US9241447B2 (en) * 2013-11-04 2016-01-26 Donald F. Looney Covering mechanism for a cold frame
CN203761958U (zh) * 2014-03-26 2014-08-13 安徽利海新城镇开发有限公司 一种自动大棚
CN106577037B (zh) * 2016-12-23 2019-07-26 中国农业大学 一种拱棚保温被全棚面卷放装置及其使用方法

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH0937659A (ja) * 1995-08-02 1997-02-10 Tokan Kogyo Co Ltd ハウス用フィルム巻上げ装置
JP2002171843A (ja) * 2000-12-07 2002-06-18 Nichino Kogyo Kk ビニールハウスの開閉装置
JP2005052082A (ja) * 2003-08-05 2005-03-03 Yoshimi Hayakawa ビニールハウス
WO2005027620A1 (fr) * 2003-09-23 2005-03-31 Republic Of Korea(Management: Rural Development Administration) Systeme d'ouverture automatique de toiture souple a plusieurs travees

Also Published As

Publication number Publication date
GB201802892D0 (en) 2018-04-11
GB2571289B (en) 2020-11-04
CN111246727A (zh) 2020-06-05
GB2571289A (en) 2019-08-28

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