WO2005027620A1 - Systeme d'ouverture automatique de toiture souple a plusieurs travees - Google Patents

Systeme d'ouverture automatique de toiture souple a plusieurs travees Download PDF

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Publication number
WO2005027620A1
WO2005027620A1 PCT/KR2003/002681 KR0302681W WO2005027620A1 WO 2005027620 A1 WO2005027620 A1 WO 2005027620A1 KR 0302681 W KR0302681 W KR 0302681W WO 2005027620 A1 WO2005027620 A1 WO 2005027620A1
Authority
WO
WIPO (PCT)
Prior art keywords
winding rod
soft
cover
winding
support
Prior art date
Application number
PCT/KR2003/002681
Other languages
English (en)
Inventor
Gyeong-Won Kim
Jin-Ha Yun
Jong-Keel Jeon
In-Bok Lee
Young-Hwan Park
Original Assignee
Republic Of Korea(Management: Rural Development Administration)
Green Plus Co., Ltd.
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 Republic Of Korea(Management: Rural Development Administration), Green Plus Co., Ltd. filed Critical Republic Of Korea(Management: Rural Development Administration)
Priority to AU2003304473A priority Critical patent/AU2003304473A1/en
Priority to JP2004566472A priority patent/JP3916245B2/ja
Publication of WO2005027620A1 publication Critical patent/WO2005027620A1/fr

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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
    • A01G9/24—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
    • 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
    • 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
    • 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

  • the present invention relates, in general, to a soft-covered multi-span greenhouse and, more particularly, to an automatic fully-open roof system of the soft-covered multi-span greenhouse which automatically opens or closes soft covers of entire roofs of the soft-covered multi-span greenhouse while controlling the tensions of support bands that hold the soft covers on the roofs.
  • FIG. 1 shows one of the conventional soft-covered greenhouses which have been preferably built on arable lands in recent years.
  • a compartment of the conventional soft-covered greenhouse is fabricated with a plurality of arc-shaped frames 1 which are sequentially supported on an arable land while being spaced apart from each other at regular intervals, a soft cover 2a layered over the plurality of arc-shaped frames 1 to cover a tunnel-type roof 2 of the compartment, and a plurality of support bands 3 externally wrapped around the soft cover 2a at positions spaced apart from each other at regular intervals, thus supporting the soft cover 2a on the roof 2.
  • the soft-covered greenhouse further includes a winding rod 5 which is provided along a lower part of the roof 2 and to which a lower end of the soft cover 2a is held, so that the winding rod 5 is rotated by a rotating force of a winding motor Ml provided at an end of the winding rod 5.
  • the winding rod 5 thus winds or unwinds the soft cover 2a to open or close the roof 2, thereby ventilating the interior of the greenhouse.
  • the winding rod 5 is placed under the support bands 3 to wind or unwind the soft cover 2a, as shown in the drawing.
  • the winding rod 5 moves upward and downward on the roof 2 due to a winding. or unwinding force generated during the winding or unwinding operation of the winding rod 5.
  • the winding rod 5 is rotated by the operation of the winding motor Ml, thus winding or unwinding the soft cover 2a.
  • the winding rod 5 moves upward and downward along the roof 2 while winding or unwinding the soft cover 2a.
  • the winding rod 5 is suspended on the roof 2 by the soft cover 2a, thus the winding rod 5 is prevented from being dropped from the roof 2.
  • a swinging link 6 may couple each end of the winding rod 5 to a predetermined portion of the compartment of the greenhouse, as shown in the drawing, thus more effectively preventing the winding rod 5 from being dropped from the roof 2 without failure and smoothly guiding the upward and downward movement of the winding rod 5 on the roof 2.
  • Two or more soft-covered compartments each having the above- mentioned construction may be continuously arranged side by side to form a multi-span greenhouse, as shown in the drawing.
  • the soft-covered greenhouse having two or more compartments is called a soft-covered multi-span greenhouse in the related art.
  • the compartments are arranged so that the roofs 2 are continued at the side edges thereof, thus forming a multi-span structure of the greenhouse.
  • the junction between the continued roofs 2 forms a valley N with a gutter 4 provided along the valley N to drain water, such as rainwater, from the roofs 2 onto the ground.
  • water such as rainwater
  • the above-mentioned conventional soft-covered greenhouse is problematic in that the support bands 3 compress the external surface of the winding rod 5 downward, so that the winding rod 5 may not completely move upward to the top of the roof 2 due to friction caused by the compression of the support bands 3, but may move upward to only reach a position distant from the top of the roof 2. In the above state, the winding rod 5 only opens a lower part of the roof 2.
  • the distance h by which the winding rod 5 moves from the side edge of the roof 2 to open the roof 2 in the above state is only about lm, air in the greenhouse is not completely changed with fresh air, and only a part of the air is circulated to the outside of the greenhouse, resulting in a reduction of the ventilation effect of the greenhouse. Therefore, it is difficult to cultivate plants in the soft-covered greenhouse having the above-mentioned construction during a season of high temperature and humidity, such as the summer season. Furthermore, the soft cover 2a which is wound around and unwound from the winding rod 5 may easily expand and be damaged under the friction applied thereto from the support bands 3, which compress the soft cover 2a downward during the winding or unwinding operation of the winding rod 5.
  • the damaged soft cover 2a must be changed with a new one (the requirement of changing the existing soft cover 2a with a new one happens frequently and repeatedly). Furthermore, because the winding motor Ml is provided on one end of the winding rod 5, a difference is caused between the rotating forces transmitted from the winding motor Ml to both ends of the winding rod 5. Therefore, while the end of the winding rod 5 which is closer to the winding motor Ml is rotated more smoothly, the other end of the winding rod 5 which is distant from the winding motor Ml cannot be rotated smoothly.
  • the winding rod 5 may fail to be balanced or horizontal during the winding or unwinding operation thereof.
  • the soft cover 2a cannot be straightly wound around or unwound from the winding rod 5 on the roof 2, and, furthermore, the winding rod 5 may be unexpectedly bent.
  • an object of the present invention is to provide an automatic fully-open roof system of a soft-covered multi-span greenhouse, which automatically controls the tensions of a plurality of support bands supporting a soft cover on a roof of the soft-covered multi-span greenhouse, thus preventing the support bands from compressing a winding rod on the roof during a winding or unwinding operation of the winding rod, and which moves the winding rod to the top of the roof to completely open the roof, and in which the winding rod moves at the same speed on the roof while the opposite ends of the winding rod form the same trace, so that the winding rod winds or unwinds the soft cover while maintaining a desired balance and horizontality thereof.
  • the present invention provides an automatic fully-open roof system of a soft-covered multi-span greenhouse, the soft-covered multi-span greenhouse having a plurality of soft-covered compartments which are arranged side by side to be continued at side edges of tunnel-type roofs thereof to provide a multi-span structure of the greenhouse and each comprise a plurality of arc-shaped frames supported on a support surface, a soft cover layered over the plurality of arc-shaped frames to cover a tunnel-type roof of each of the compartments, and a plurality of support bands externally wrapped around the soft cover at positions spaced apart from each other at regular intervals, thus supporting the soft cover on the tunnel-type roof
  • the automatic fully-open roof system comprising: a mounting block arranged along a top of the tunnel-type roof of each of the compartments in a longitudinal direction of the roof while being mounted to and crossing with the plurality of arc-shaped frames, with both the soft cover and the support bands being supported by the mounting block at the top of the tunnel-type roof
  • FIG. 1 is a perspective view of a conventional soft-covered multi-span greenhouse
  • FIG. 2 is a perspective view of a soft-covered multi-span greenhouse provided with an automatic- fully-open roof system according to a first embodiment of the present invention
  • FIG. 3 is a plan view of the soft-covered multi-span greenhouse of FIG. 2
  • FIG. 4 is a front view of the soft-covered multi-span greenhouse of FIG.
  • FIG. 5 is a sectional view showing a construction of both a mounting block and two winding rods constituting the automatic fully-open roof system of FIG. 2;
  • FIG. 6 is a front view showing an arrangement of both an eccentric disc pulley and the two winding rods constituting the automatic fully-open roof system of FIG. 2;
  • FIG. 7 is a perspective view of the eccentric disc pulley of FIG. 6;
  • FIG. 8 is an operational concept diagram of the eccentric disc pulley of FIG. 6;
  • FIG. 9 is a front view of a soft-covered multi-span greenhouse provided with an automatic fully-open roof system according to a second embodiment of the present invention;
  • FIG. 10 is a front view showing a construction and arrangement of the eccentric disc pulley, two winding rods and two winding rod seating units which are provided in a valley between the roofs to constitute the automatic fully-open roof system of FIG. 9; and
  • FIG. 11 is an enlarged front view showing a construction and operation of one of the two winding rod seating units of FIG. 9.
  • FIG. 2 is a perspective view of a soft-covered multi-span greenhouse provided with an automatic fully-open roof system according to a first embodiment of the present invention.
  • FIG. 3 is a plan view of the soft-covered multi-span greenhouse of FIG. 2.
  • FIG. 4 is a front view of the soft-covered multi-span greenhouse of FIG. 2.
  • FIG. 5 is a sectional view showing a construction of both a mounting block and two winding rods constituting the automatic fully-open roof system of FIG. 2.
  • FIG. 6 is a front view showing an arrangement of both an eccentric disc pulley and the two winding rods constituting the automatic fully-open roof system of FIG. 2.
  • FIG. 7 is a perspective view of the eccentric disc pulley of FIG. 6.
  • FIG. 8 is an operational concept diagram of the eccentric disc pulley of FIG. 6.
  • the automatic fully-open roof system of the soft-covered multi-span greenhouse includes a plurality of soft-covered compartments which are arranged side by side on an arable land to be continued at the side edges of a plurality of tunnel-type roofs 2 thereof to provide a multi-span structure of the greenhouse.
  • Each of the soft-covered compartments is fabricated with a plurality of arc-shaped frames 1 which are sequentially supported on the arable land from the front to the back of the compartment.
  • Two soft covers 2a are layered over the left and right sides of the tops of the plurality of arc-shaped frames 1 to cover a tunnel-type roof 2 of each of the compartments.
  • a plurality of support bands 3 are externally wrapped around the soft covers 2a at positions spaced apart from each other at regular intervals, thus supporting the soft covers 2a on the tunnel-type roof 2.
  • the junction between the two continued roofs 2 of the compartments forms a valley V with a gutter 4 provided along the valley V to drain water, such as rainwater, from the roofs 2 onto the ground.
  • the automatic fully-open roof system of the soft-covered multi-span greenhouse according to the first embodiment of the present invention further includes a mounting block 100 which is arranged along the top of the tunnel-type roof 2 of each of the compartments in a longitudinal direction while being mounted to and crossing with the plurality of arc-shaped frames 1 , as shown in
  • each of the two soft covers 2a is held at a top end thereof by a lower portion of each of the opposite sides of the mounting block 100 by a cover holding means.
  • Each of the plurality of support bands 3 comprises two support bands 3 each of which is held at a top end thereof to an upper portion of each of the opposite sides of the mounting block 100 by a band holding means.
  • the cover holding means includes a cover holding groove 1 10 which is provided along the lower portion of each of the opposite sides of the mounting block 100 with the top end of each of the two soft covers 2a being placed in the cover holding groove 1 10.
  • the cover holding means further includes a cover holding cap 112 which engages with the cover holding groove 110 of the mounting block 100 and is fastened to the mounting block 100 by a plurality of fastening members 114, thus compressing the top end of each of the two soft covers 2a in the cover holding groove 110 to hold the top end of each of the two soft covers 2a to the mounting block 100.
  • the top end of the soft cover 2a is placed in the cover holding groove 110 such that the top end of the soft cover 2a is exposed to the upper portion of the mounting block 100.
  • the cover holding cap 112 which engages with the cover holding groove 110 of the mounting block 100 and is fastened to the mounting block 100 by a plurality of fastening members 114, thus compressing the top end of each of the two soft covers 2a in the cover holding groove 110 to hold the
  • the 112 preferably has at least one compression rib R which is axially provided along an inner surface of the cover holding cap 112, as shown in drawings, so that the cover holding cap 112 compresses and firmly holds the soft cover 2a in the cover holding groove 1 10 in a zigzag-pattern by the compression rib R.
  • the middle compression rib R of the cover holding cap 112 is inserted into the cover holding groove 110.
  • the upper and lower compression ribs R of the cover holding cap 1 12 compress the opposite sides of the cover holding groove 110.
  • rib holding grooves or rib holding projections may be formed along the opposite sides of the mounting block 100 to hold the upper and lower compression ribs R. Therefore, the soft covers 2a are firmly held to the mounting block 100 by means of the cover holding grooves 1 10, the cover holding caps 112 and the fastening members 114.
  • the construction of the band holding means is described as follows:
  • the band holding means includes a locking rim 122 which is provided along the top end of each of the support bands 3 and a band holding groove 120 which is provided along the upper portion of each of the opposite sides of the mounting block 100 and opened at an end thereof, thus receiving the locking rim 122 therein to hold the top end of each of the support bands 3 to the mounting block 100.
  • the locking rims 122 of the plurality of support bands 3 are sequentially fitted into the band holding groove 120 provided along each of the opposite sides of the mounting block 100 at the front end or the rear end of the mounting block 100.
  • the support bands 3 are arranged along the opposite band holding grooves 120 of the mounting block 100 at regular intervals. Because the locking rims 122 of the plurality of support bands 3 are forcibly fitted into the opposite band holding grooves 120 of the mounting block 100, the support bands 3 are firmly mounted to the band holding grooves 120 of the mounting block 100.
  • each of the locking rims 122 has a circular cross-section as shown in the drawing, but it should be understood that the locking rims 122 may be designed to have a rectangular or triangular cross- section, as desired.
  • the support bands 3 may be mounted to the mounting block 100 using setscrews or nails in place of providing the locking rims 122 on the support bands 3 and the band holding grooves 120 on the mounting block 100.
  • the band holding means may comprise a ring, different from the above-mentioned structure shown in the drawings, so that the ring holds the support bands 3.
  • a plurality of rings may be provided to protrude from the upper portion of the mounting block 100 at positions spaced apart from each other at regular intervals, so that the support bands 3 are held by the rings.
  • the automatic fully-open roof system of the soft-covered multi-span greenhouse according to the first embodiment of the present invention further includes a plurality of winding rods 210.
  • Each of the winding rods 210 includes a cover holding unit 212 that is provided along an external surface of the winding rod 210 to hold a lower end of an associated soft cover 2a to the winding rod 210.
  • a winding motor Ml is provided on an end of the winding rod 210 to rotate the winding rod 210, thus allowing the winding rod 210 to move upward and downward between the side edge and the top of the tunnel-type roof 2 while winding or unwinding the soft cover 2a.
  • the cover holding unit 212 to hold the lower end of the soft cover 2a to the winding rod 210 comprises a cover receiving groove 212a which is axially provided along the external surface of the winding rod 210 to receive the lower end of the soft cover 2a therein, as shown in FIG. 5.
  • a cover holding strap 212b is longitudinally fitted into the cover receiving groove 212a and is fastened to the winding rod 210 by a plurality of fastening members 212c, thus compressing the lower end of the soft cover 2a in the cover receiving groove 212a to attach the lower end of the soft cover 2a to the winding rod 210.
  • the cover holding strap 212b preferably has a longitudinal shape to correspond to the longitudinal shape of the winding rod 210, so that the cover holding strap 212b is longitudinally fitted into the cover receiving groove 212a to compress and firmly hold the entire length of the lower end of the soft cover 2a.
  • at least one compression rib R' is preferably formed on the inside surface of the cover holding strap 212b, as shown in the drawings, so that the compression rib R" wedges the soft cover 2a in the coyer holding groove 212a. Because the winding rod 210 has the above-mentioned cover holding groove 212a to hold the soft cover 2a thereto, both the cover holding strap 212b and the fastening members 212c do not protrude from the external surface of the winding rod 210.
  • both the cover holding strap 212b and the fastening members 212c do not protrude from the external surface of the winding rod 210 due to thickness of the strap 212b and the fastening members 212c. Therefore, when the soft cover 2a is wound around the winding rod 210 having the protruding parts, the layers of the soft cover 2a wound around the winding rod 210 are bulged at positions corresponding to the protruding parts.
  • the bulged portions of the wound soft cover 2a may interfere with the support bands 3 and may be damaged, or the rumples may be formed on the soft cover 2a. Therefore, when the cover holding groove 212a is formed along the external surface of the winding rod 210 to receive the lower end of the soft cover 2a therein to hold the cover 2a, it is possible to prevent the formation of the bulged portions of the wound soft cover 2a. Thus, the soft cover 2a does not interfere with the support bands 3 during the winding operation of the winding rod 210.
  • the automatic fully-open roof system further includes a rod balancing means 300 which is provided at each of both ends of the winding rod 210 to guide the upward and downward movement of the winding rod 210 between the side edge and the top of the tunnel-type roof 2 while maintaining the horizontality of the winding rod 210. As shown in FIGS. 2 through 4, the rod balancing means 300
  • the 300 comprises a pinion 310 which is integrally provided, on each of both ends of the winding rod 210.
  • An arc-shaped rack 320 is provided in each of the front and back of the roof 2 to support the pinion 310 thereon while being circumscribed with the pinion 310.
  • the arc-shaped rack 320 guides the rotating motion of the pinion 310 during the upward and downward movements of the pinion 310 between the side edge and the top of the tunnel-type roof 2 along the rack 320, thereby maintaining the horizontality of the winding rod 210.
  • the arc-shaped rack 320 may be preferably supported at both ends thereof on two horizontal support plates 502 which are respectively held on the top ends of two vertical columns 500 that stand on the ground at predetermined positions outside the roof 2, as shown in the drawings.
  • the horizontal support plates 502 supporting the ends of the arc- shaped rack 320 thereon may be held on the arc-shaped frames 1 of the soft- covered compartment without using the vertical columns 500.
  • the arc-shaped rack 320 may be supported at both ends thereof on the top ends of the vertical columns 500 without having the horizontal support plates 502.
  • the arc-shaped rack 320 may be mounted to one of the arc-shaped frames 1 of the soft-covered compartment, so that the rack 320 and the frame 1 are integrated into a single structure.
  • the arc- shaped rack 320 may have long legs at both ends thereof and be directly supported on the ground by the long legs.
  • the rod balancing means 300 according to the first embodiment further includes a pair of guide plates 350 which are provided on the winding rod 210 at opposite sides of the pinion 310 and are respectively placed outside the opposite side surfaces of the arc-shaped rack 320.
  • the pair of guide plates 350 guide the upward and downward movement of the pinion 310 along the rack 320 while preventing the pinion 310 from being removed from the rack 320.
  • a plurality of rollers 352 are preferably provided between the lower portions of the guide plates 350 so that the rollers 352 are in movable contact with the lower surface of the arc-shaped rack 320, thus guiding the upward and downward movement of the pinion 310 along the rack 320.
  • the guide plates 350 more effectively guide the upward and downward movement of the pinion 310 along the rack 320 due to the plurality of rollers 352.
  • the winding rod 210 When the winding rod 210 is rotated by the winding motor Ml during an operation of the automatic fully-open roof system having the above-mentioned rod balancing means 300, the two pinions 310 of the winding rod 210 are simultaneously rotated at the same rotating speed to move along the arc-shaped racks 320 provided at the front and back of the roof 2. Therefore, the winding rod 210 moves upward or downward on the roof 2, so that the opposite ends of the winding rod 210 reach positions of the same height. Thus, the winding rod 210 achieves the desired balance and horizontality during the winding or unwinding operation thereof.
  • the automatic fully-open roof system further includes a band tension control means 400 which tightens or loosens the support bands 3 while holding the support bands 3, in response to the winding or unwinding operation of the winding rod 210, thus controlling the tensions of the support bands 3.
  • the band tension control means 400 includes a plurality of shafts 410 which are longitudinally arranged along the valleys N between the tunnel-type roofs 2 of the plurality of soft-covered compartments, respectively, as shown in FIGS. 2 and 3.
  • the band tension control means 400 further includes a power transmission unit 430 which is coupled to a drive motor M2 to transmit the rotating force of the drive motor M2 to the shafts 410, thus rotating the shafts 410 simultaneously.
  • the band tension control means 400 further includes a plurality of eccentric disc pulleys 450 which are eccentrically mounted on each of the shafts 410 with portions of the support bands 3 being respectively wrapped around the lower portions of the eccentric disc pulleys 450.
  • each of the shaft support units 420 preferably comprises a flat support unit which is provided at a predetermined position thereof with a ring-shaped bearing 422 and is mounted to a gutter 4 that is provided along each of the valleys N, as shown in FIG. 2.
  • the shaft 410 passes through the ring-shaped bearings 422 of the shaft support units 420, thus the shaft
  • each of the shaft support units 420 may comprise a bending bar-type support unit having a ⁇ -shaped appearance, in place of the flat support units 420, so that the shaft 410 is placed and supported on the bending bar- type support units having the ⁇ -shaped appearance.
  • a plurality of bending bar-type support units having the ⁇ -shaped appearance may be sequentially set along the gutter 4 to stand vertically in the gutter 4 or may be vertically mounted to the lower ends of the top portions of the arc-shaped frames 1, so that the shaft 410 is placed and supported on the bending bar-type support units.
  • the power transmission unit 430 comprises a drive pinion 432 which is mounted to the drive motor M2 to be rotated by the drive motor M2, as shown in FIGS. 2 and 3.
  • a horizontal rack 434 engages with the drive pinion 432 to reciprocate in a horizontal direction which is perpendicular to the shafts 410, in response to the operation of the drive motor M2.
  • the power transmission unit 430 further includes a plurality of driven pinions 436 which are respectively mounted to the ends of the plurality of shafts 410 and engage with the horizontal rack 434, and are thus rotated by the reciprocating motion of the horizontal rack 434 to rotate the shafts 410.
  • the horizontal rack 434 preferably further includes a rack holder 434a to hold each of both ends of the horizontal rack 434, thus preventing the horizontal rack 434 from being moved in a lateral direction during the reciprocating motion of the horizontal rack 434.
  • the horizontal rack holder 434a to hold each of both ends of the horizontal rack 434, thus preventing the horizontal rack 434 from being moved in a lateral direction during the reciprocating motion of the horizontal rack 434.
  • the horizontal rack 434 preferably further includes a plurality of horizontal support plates 502 to support a vertical load of the horizontal rack 434, and a guide roller 434b to roll in the junction gap between the horizontal rack 434 and each of the horizontal support plates 502. Therefore, when the horizontal rack 434 reciprocates in the horizontal direction by the drive pinion 432 in response to the operation of the drive motor M2, the horizontal rack 434 is prevented from being moved in the lateral direction by the rack holders 434a and smoothly moves by the rolling operation of the guide rollers 434b.
  • the plurality of driven pinions 436 integrated with the ends of the plurality of shafts 410 are rotated by the reciprocating motion of the horizontal rack 434.
  • the shafts 410 are rotated concurrently with the plurality of driven pinions 436.
  • the horizontal rack 434 in the above state rotates the plurality of shafts 410 at the same time.
  • the eccentric disc pulleys 450 are eccentrically rotated to tighten or loosen the support bands 3, thus controlling the tensions of the support bands 3.
  • each of the eccentric disc pulleys 450 is eccentrically rotated downward as shown by the solid lines of FIG. 8 to tighten the support band 3, thus increasing the tension of the support band 3.
  • each of the eccentric disc pulleys 450 is eccentrically rotated upward as shown by the dotted lines of the drawing to loosen the support band 3, the tension of the support band 3 is reduced.
  • the tension control operation of the eccentric disc pulleys 450 will be described in more detail later herein.
  • Each of the plurality of eccentric disc pulleys 450 further includes a ring- shaped idle bearing 455 which is provided around the circumferential surface of each of the eccentric disc pulleys 450, as shown in FIG. 7, to execute an idle- rotation during the eccentric rotation of the eccentric disc pulley 450.
  • the ring-shaped idle bearing 455 prevents each of the support bands 3 from being undesirably wound around the eccentric disc pulley 450 when the eccentric disc pulley 450 tightens or loosens the support band 3.
  • the support band 3 may be undesirably wound around the circumferential surface of the eccentric disc pulley 450 due to friction generated in the junction surface between the support band 3 and the circumferential surface of the eccentric disc pulley 450.
  • a part of the support band 3 that is wrapped around the pulley 450 at a side of the rotating direction of the pulley 450 is longer than another part of the support band 3 wrapped around the pulley 450 at another side opposite to the rotating direction of the pulley 450. That is, the eccentric disc pulley 450 in the above state cannot evenly tighten the support band 3 at the opposite sides of the pulley 450, but further tightens the support band 3 at the side of the rotating direction of the pulley 450.
  • the support band 3 is not undesirably wound around the circumferential surface of the eccentric disc pulley 450.
  • the eccentric disc pulley 450 evenly tightens the support band 3 at the opposite sides of the pulley 450.
  • the eccentric disc pulley 450 is eccentrically rotated downward, thus pulling the support band 3 downward.
  • the support band 3 in the above state is tightened due to the pulling force of the eccentric disc pulley 450, and. at the same time, the support band 3 is in frictional contact with the ring-shaped idle bearing 455.
  • the idle bearing 455 idle-rotates around the circumferential surface of the eccentric disc pulley 450 due to the friction between the support band 3 and the idle bearing 455. Because the idle bearing 455 idle-rotates around the circumferential surface of the eccentric disc pulley 450 as described above, the support band 3 is not wound around the circumferential surface of the eccentric disc pulley 450. Thus, the eccentric disc pulley 450 evenly tightens the support band 3 at the opposite sides of the pulley 450.
  • the eccentric disc pulley 450 is eccentrically rotated in a reverse direction, that is, when the eccentric disc pulley 450 is rotated upward, the motion of the eccentric disc pulley 450 is opposite to that described for the downward eccentric rotation of the pulley 450.
  • the eccentric disc pulley 450 During the upward eccentric rotation of the eccentric disc pulley 450, the idle bearing 455 idle-rotates around the circumferential surface of the eccentric disc pulley 450 due to the friction between the support band 3 and the idle bearing 455. Thus, the eccentric disc pulley 450 evenly loosens the support band 3 at the opposite sides of the pulley 450, so that the support band 3 is released from the tightened state.
  • the eccentric disc pulley 450 is grooved around the circumferential surface thereof to have a groove with a U-shaped cross- section, while the inside surface of the ring-shaped idle bearing 455 is shaped to have a V-shaped cross-section.
  • the grooved circumferential surface of the eccentric disc pulley 450 and the inside surface of the ring-shaped idle bearing 455 are in linear contact with each other during the idle-rotation of the idle bearing 455 around the eccentric disc pulley 450, thus reducing the frictional resistance between the idle bearing 455 and the eccentric disc pulley 450. That is, the eccentric disc pulley 450 is grooved around the circumferential surface thereof to have a groove similar to that of a conventional belt pulley for V-belts, while the ring-shaped idle bearing 455 is shaped to have a triangular cross-section on the inside surface thereof in the same manner as that found in a conventional V-belt.
  • the eccentric disc pulley 450 and the ring-shaped idle bearing 455 are in linear contact with each other at the circumferential surface and the inside surface thereof, so that the frictional resistance between the idle bearing 455 and the eccentric disc pulley 450 is minimized during the idle-rotation of the idle bearing 455 around the eccentric disc pulley 450.
  • the ring-shaped idle bearing 455 is preferably made of rubber or polyurethane, so that the idle bearing 455 generates the desired friction between the support band 3 and the idle bearing 455 and is fitted over the grooved circumferential surface of the eccentric disc pulley 450 while being elastically expanded and contracted.
  • the operational theory of the eccentric disc pulley 450 having the above- mentioned construction and operational effect is shown in FIG. 8.
  • the momentum equations to calculate the vertical momentum of the.. eccentric disc pulley 450 executing an eccentric rotating motion is expressed with the reference characters shown in the drawing, are as follows:
  • d and r respectively denote a diameter of the shaft 410 and a radius of the eccentric disc pulley 450. The d and r were determined from the sizes (diameter and radius) of the shaft 410 and the eccentric disc pulley 450 which were produced according to the embodiments of the present invention.
  • the above-expressed momentum equations may be used to determine the sizes of both the shaft 410 and the eccentric disc pulley 450, based on the distance to which the support band 3 must be pulled by the eccentric disc pulley 450.
  • the above-expressed momentum equations may be used to determine the distance to which the support band 3 is pulled by the eccentric disc pulley 450, based on the sizes of both the shaft 410 and the eccentric disc pulley 450.
  • the eccentric disc pulley 450 must be eccentrically rotated downward to tighten the support band 3 again, after the winding rod 210 completely winds the soft cover 2a thereon. In other words, it is necessary to loosen the support band 3 by the eccentric disc pulley 450 before the winding rod 210 starts the winding motion to wind the soft cover 2a thereon. Furthermore, the eccentric disc pulley 450 must tighten the support band 3 again when the winding rod 210 completely executes the winding motion. Therefore, the winding rod 210 does not interfere with the support bands
  • the winding rod 210 can move upward on the roof 2 from the side edge of the roof 2 by a distance H (about 3.8m) to reach a position close to the mounting block 100 of the roof 2, as shown in FIG. 4, thus almost completely opening the roof 2.
  • the lower end of the soft cover 2a which is wound around or unwound from the winding rod 210 is inserted and held in the cover holding unit 212 which is formed on the winding rod 210 by axially recessing the external surface of the winding rod 210. Therefore, the layers of the soft cover 2a wound around the winding rod 210 are not bulged at the positions corresponding to the cover holding unit 212. Furthermore, the winding rod 210 moves upward or downward on the roof 2, so that the opposite ends of the winding rod 210 reach positions of the same height.
  • FIG. 9 is a front view of a soft-covered multi-span greenhouse provided with an automatic fully-open roof system according to a second embodiment of the present invention.
  • FIG. 10 is a front view showing the construction and arrangement of the eccentric disc pulley, two winding rods and two winding rod seating units which are provided in the valley between the roofs to constitute the automatic fully-open roof system of FIG. 9.
  • FIG. 1 1 is an enlarged front view showing the construction and operation of one of the two winding rod seating units of FIG. 9.
  • the general construction of the automatic fully-open roof system of the soft-covered multi-span greenhouse according to the second embodiment of the present invention remains the same as that described for the first embodiment, but both the pinion 310 and the arc-shaped rack 320 of the rod balancing means 300 according to the first embodiment are replaced with a disc-shaped collar 310-1 and an arc-shaped guide rail 320- 1. respectively, in the second embodiment.
  • the automatic fully-open roof system according to the second embodiment preferably further includes a winding rod seating unit 250 which is pro ⁇ ided in each of the va'leys V between the tunnel-type roofs 2 of the plurality of soft-covered compartments to selectively hold the winding rod 210 therein, in response to the eccentric rotation of the eccentric disc pulley 450, thus preventing the winding rod 210 from being moved.
  • a winding rod seating unit 250 which is pro ⁇ ided in each of the va'leys V between the tunnel-type roofs 2 of the plurality of soft-covered compartments to selectively hold the winding rod 210 therein, in response to the eccentric rotation of the eccentric disc pulley 450, thus preventing the winding rod 210 from being moved.
  • the rod balancing means 300 includes the disc-shaped collar 310-1 which is integrally provided on each of both ends of the winding rod 210 (see FIG. 2) to move upward and downward between the side edge and the top of the tunnel-type roof 2 while being rotated during the upward and downward movement of the winding rod 210.
  • the rod balancing means 300 further includes the arc-shaped guide rail 320-1 which supports the disc-shaped collar 310-1 thereon while being circumscribed with the disc-shaped collar 310-1, thus guiding a rotating motion of the disc-shaped collar 310-1 during the upward and downward movement of the collar 310-1 along the guide rail 320-1 and thereby maintaining the horizontality of the winding rod 210.
  • the guide rail 320-1 is provided with a guide groove 320- la along the upper surface thereof to seat the disc-shaped collar 310-1 in the guide groove 320- la
  • a guide groove (not shown) may be formed around the circumferential surface of the disc-shaped collar 310-1 in the same manner as that of a conventional pulley, while a guide projection (not shown) may be formed along the upper surface of the arc-shaped guide rail 320-1 to engage with the groove of the collar 310-1.
  • the rod balancing means 300 further includes a pair of guide plates 350 which are provided on the winding rod 210 at opposite sides of the disc-shaped collar 310-1 and are respectively placed outside the opposite side surfaces of the arc-shaped guide rail 320-1.
  • the pair of guide plates 350 guide the movement of the pinion 310 along the guide rail 320-1 while preventing the collar 310-1 from being removed from the guide rail 320-1.
  • a plurality of rollers 352 are provided between the lower portions of the guide plates 350 to be in movable contact with the lower surface of the arc-shaped guide rail 320-1, thus guiding the movement of the collar 310-1 along the guide rail 320-1.
  • the rod balancing means 300 having the disc- shaped collar 310-1, the arc-shaped guide rail 320-1 and the guide plates 350 with the rollers 352 according to the second embodiment maintains the opposite ends of the winding rod 210 at the same height, thus giving balance and horizontality to the winding rod 210 during the winding or unwinding operation of the winding rod 210.
  • the winding rod seating unit 250 includes a mounting plate 252 which is mounted (through a welding process or a screwing process) to either the outer surface of each of the arc-shaped frames 1 at a predetermined position in each of the valleys V, or a side surface of the gutter 4 provided along each of the valleys V.
  • the winding rod seating unit 250 further includes an elastic ring 255 which is provided on the mounting plate 252 and has an inner diameter smaller than the outer diameter of the winding rod 210.
  • An upper portion of the elastic ring 255 is opened to form a mouth, with upper and lower rounded parts 255a respectively provided along the upper and lower edges of the mouth of the elastic ring 255 while being bent outward from the upper and lower edges of the mouth. Therefore, when the winding rod 210 is seated into the elastic ring 255 while expanding the upper and lower rounded parts 255a outward to open the mouth, an elastic restoring force with the intend to repel the winding rod 210 is generated and remains in the elastic ring 255.
  • a guide arm 257 preferably extends upward from the upper rounded part 255a of the elastic ring 255 while being inclined at an angle of inclination.
  • the guide arm 257 guides the winding rod 210 thereon to seat the winding rod 210 into the elastic ring 255.
  • the winding rod 210 moves downward along the arc-shaped guide rails 320-1 from the top to the side edge of the roof 2 around the valley V while unwinding the soft cover 2a, the winding rod 210 is placed on the guide arm 257 as shown by the phantom line of FIG. 11. Thereafter, the winding rod 210 is guided by the guide arm 257 to the elastic ring 255.
  • the eccentric disc pulley 450 is eccentrically rotated to tighten the support bands 3.
  • the support bands 3 compress the winding rod 210 downward.
  • the winding rod 210 slides over the upper and lower rounded part 255a of the elastic ring 255 to be fitted into the elastic ring 255.
  • the inner diameter of the elastic ring 255 is smaller than the outer diameter of the winding rod 210.
  • the elastic ring 255 elastically expands with the elastic restoring force being generated and remaining in the elastic ring 255 with the intend to repel the winding rod 210 from the- elastic ring 255.
  • the elastic restoring force generated and remaining in the elastic ring 255 in the above state does not overcome the compression force of the support bands 3.
  • the winding rod 210 is maintained in the seated state thereof where the winding rod 210 is held in the elastic ring 255.
  • the light transmittance of the soft cover 2a is highly improved to maximize the light transmitting effect of the soft cover 2a. Because the soft cover 2a is firmly coupled at the edge thereof to the winding rod 210 which is firmly held by the winding rod seating unit 250, the soft cover 2a maintains its stretched state without flapping in the wind. Since the soft cover 2a does not flap in the wind, the winding rod 210 is stably seated in the winding rod seating unit 250, without being undesirably moved. When the winding rod 210 is completely seated in the winding rod seating unit 250 as shown in FIG. 11, impurities, such as dust, are not introduced into the junction gap between the winding rod 210 and the winding rod seating unit 250.
  • the eccentric disc pulley 450 is eccentrically rotated in the reverse direction to release the support bands 3 prior to the winding operation.
  • the expanded elastic ring 255 is elastically contracted by the restoring force to overcome the compression force of the support bands 3. Therefore, there occurs a sliding motion of the winding rod 210 having a rounded external surface relative to the rounded internal surface of the elastic ring 255, so that the winding rod 210 is removed from the elastic ring 255.
  • the elastic ring 255 in the above state elastically repels the winding rod 210 therefrom due to the elastic restoring force thereof, thus allowing the winding rod 210 to moves away from the elastic ring 255.
  • the winding rod 210 After the winding rod 210 elastically moves away from the elastic ring 255 as described above, the winding rod 210 starts the winding operation to wind the soft cover 2a thereon, thus opening the roof.
  • the winding rod 210 of the present invention is selectively seated into or moves away from the winding rod seating unit 250 in accordance with the operation of the eccentric disc pulley 450.
  • the present invention provides an automatic fully- open roof system of a soft-covered multi-span greenhouse.
  • the automatic fully- open roof system has a band tension control means for automatically controlling the tensions of a plurality of support bands which support a soft cover on a roof of the soft-covered multi-span greenhouse.
  • the automatic fully-open roof system moves a winding rod to the top of the roof to completely open the roof, thereby completely changing the air in the greenhouse with fresh air to enhance the ventilation effect of the greenhouse.
  • the automatic fully-open roof system prevents the soft cover, wound around the winding rod, from interfering with the support bands during a winding or unwinding operation of the winding rod.
  • the soft cover is prevented from being damaged due to the friction caused by the interference of the soft cover with the support bands. Furthermore, the winding rod moves on the roof while maintaining the horizontality thereof by a rod balancing means during the winding or unwinding operation, so that the soft cover is straightly wound around or unwound from the winding rod on the roof while preventing the winding rod from being bent.

Landscapes

  • Life Sciences & Earth Sciences (AREA)
  • Environmental Sciences (AREA)
  • Greenhouses (AREA)

Abstract

L'invention concerne un système destiné à un toit à ouverture totale automatique pour serre à toiture souple à plusieurs travées, ce système ouvrant ou fermant automatiquement les parties souples de chaque toit de la serre à plusieurs travées en commandant la tension des bandes de support maintenant les éléments souples sur le toit. Le système présenté comprend: un bloc de montage (100) qui maintient les deux éléments souples (2a) et les bandes de support (3) au sommet du toit (2); une barre d'enroulement (210) qui maintient l'extrémité inférieure de l'élément souple pour l'enrouler ou le dérouler, et ainsi ouvrir ou fermer le toit; un moyen d'équilibrage de tige d'enroulement (300), qui sert à guider le mouvement de la tige d'enroulement tout en la maintenant à l'horizontale; et un moyen de commande de tension de bande (400) qui sert à tendre ou à relâcher les bandes de support, selon que la tige d'enroulement effectue une opération d'enroulement ou de déroulement, et ainsi à commander la tension des bandes de support.
PCT/KR2003/002681 2003-09-23 2003-12-08 Systeme d'ouverture automatique de toiture souple a plusieurs travees WO2005027620A1 (fr)

Priority Applications (2)

Application Number Priority Date Filing Date Title
AU2003304473A AU2003304473A1 (en) 2003-09-23 2003-12-08 Automatic soft roof opening system for multi-span greenhouses
JP2004566472A JP3916245B2 (ja) 2003-09-23 2003-12-08 連棟ビニル温室の完全自動屋根開閉システム

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
KR10-2003-0065884A KR100502654B1 (ko) 2003-09-23 2003-09-23 연동비닐온실의 지붕자동완전개폐 시스템
KR10-2003-0065884 2003-09-23

Publications (1)

Publication Number Publication Date
WO2005027620A1 true WO2005027620A1 (fr) 2005-03-31

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PCT/KR2003/002681 WO2005027620A1 (fr) 2003-09-23 2003-12-08 Systeme d'ouverture automatique de toiture souple a plusieurs travees

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JP (1) JP3916245B2 (fr)
KR (1) KR100502654B1 (fr)
CN (1) CN100551229C (fr)
AU (1) AU2003304473A1 (fr)
WO (1) WO2005027620A1 (fr)

Cited By (3)

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US9212503B1 (en) 2013-12-06 2015-12-15 Roger Mentch Adjustable shade greenhouse device
WO2018222038A1 (fr) 2017-06-02 2018-12-06 Rico Sport & Vastgoed B.V. Auvent pour couvrir une zone de manière sélective
WO2019162650A1 (fr) * 2018-02-22 2019-08-29 Haygrove Limited Système de tension

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KR100698895B1 (ko) * 2005-12-05 2007-03-23 정지웅 개폐시스템이 구비되는 식재용 하우스
KR101360227B1 (ko) * 2011-12-29 2014-02-24 대한민국 온실용 무그림자형 보온커튼 개폐장치
KR101296050B1 (ko) * 2011-12-30 2013-08-12 경북대학교 산학협력단 개폐식 루프 시스템
KR101305859B1 (ko) * 2012-06-04 2013-09-06 김윤화 비닐 하우스용 다목적 관리기
CN102972111B (zh) * 2012-12-04 2015-04-08 汤烈 一种能除去行内苗间杂草的除草装置
KR101515549B1 (ko) * 2013-08-01 2015-06-01 김백영 조립식 터널 구조물
KR101589233B1 (ko) * 2013-11-18 2016-02-03 대한민국 가이드봉을 이용한 비닐하우스 환기창 개폐장치
CN104340403B (zh) * 2014-10-28 2017-01-18 王兆刚 料堆覆盖机
KR101514747B1 (ko) * 2014-11-04 2015-04-23 주식회사 그린플러스 온실용 차광 장치
WO2016108458A1 (fr) * 2014-12-31 2016-07-07 김진주 Dispositif de fixation de vinyle ouvrant et serre de vinyle le comprenant
CN105507476B (zh) * 2015-12-16 2017-08-25 中国建筑第二工程局有限公司 一种连拱形屋面的施工方法
CN106826751B (zh) * 2017-02-11 2019-05-03 襄阳金美科林农业开发有限公司 一种蔬菜大棚骨架智能安装机器人
GB2574838B (en) * 2018-06-19 2020-12-02 Haygrove Ltd Polytunnel structure
CN109680857A (zh) * 2018-12-27 2019-04-26 顺丰科技有限公司 活动顶棚及无人货柜
CN111418407A (zh) * 2020-04-27 2020-07-17 嘉兴市茂景园林有限公司 一种基于互联网的大棚顶膜收放装置
CN111919624B (zh) * 2020-08-17 2022-02-15 胡泽兴 一种园林景观工程用遮阳花箱

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Publication number Priority date Publication date Assignee Title
US9212503B1 (en) 2013-12-06 2015-12-15 Roger Mentch Adjustable shade greenhouse device
WO2018222038A1 (fr) 2017-06-02 2018-12-06 Rico Sport & Vastgoed B.V. Auvent pour couvrir une zone de manière sélective
NL2019017B1 (nl) * 2017-06-02 2018-12-11 Rico Sport & Vastgoed B V Overkapping voor het selectief overkappen van een oppervlak
WO2019162650A1 (fr) * 2018-02-22 2019-08-29 Haygrove Limited Système de tension
CN111246727A (zh) * 2018-02-22 2020-06-05 黑革萝有限公司 张紧系统
GB2571289B (en) * 2018-02-22 2020-11-04 Haygrove Ltd Tensioning system

Also Published As

Publication number Publication date
AU2003304473A1 (en) 2005-04-11
KR20050029558A (ko) 2005-03-28
KR100502654B1 (ko) 2005-07-20
CN1838874A (zh) 2006-09-27
JP3916245B2 (ja) 2007-05-16
CN100551229C (zh) 2009-10-21
JP2006511230A (ja) 2006-04-06

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