Irregular greenhouse curtain drawing device

Abstract

The utility model relates to an irregular greenhouse curtain drawing device, and belongs to the technical field of multi-span greenhouses. Comprising a multi-span greenhouse steel frame, and a curtain is arranged on the multi-span greenhouse steel frame. A pull rod is arranged below the curtain; the curtains comprise long curtains and short curtains, the end parts of the two pull rods corresponding to the adjacent long curtains and long curtains are fixedly connected with each other, and the two pull rods corresponding to the adjacent long curtains and short curtains are connected through connecting pieces; the pull rod corresponding to the long curtain is fixedly connected with the connecting frame, the pull rod corresponding to the short curtain is clamped by the fixed guide wheel and the movable guide wheel from the upper side and the lower side, so that the pull rod corresponding to the long curtain and the pull rod corresponding to the short curtain are connected, and in the stroke of the short curtain, after the long curtain and the short curtain are synchronously unfolded and the short curtain moves to the limit position, the guide wheels rotate; when the curtain drawing device is applied to an irregular multi-span greenhouse, two sets of driving mechanisms are not needed, the cost is reduced, the short curtain can be folded or unfolded like the long curtain, and the curtain drawing device is convenient to use.

Description

TECHNICAL FIELD

[0001] The utility model relates to the technical field of continuous ridge greenhouse, especially relates to irregular greenhouse curtain drawing device. BACKGROUND

[0002] In order to adjust the temperature and illumination in the greenhouse, usually, curtain drawing device is arranged on the top of the greenhouse. The existing curtain drawing device usually adopts the driving structure of winch and steel wire or gear and rack to drive the opening and closing of the curtain.

[0003] When the curtain drawing device is applied to the irregular continuous ridge greenhouse, due to the influence of geographical position, the width of some ridge rooms is different from that of other ridge rooms, for example, the width of general ridge room is 4 meters, and the width of the ridge room at the end is 2 meters. The driving structure needs 4 meters of stroke to drive the curtain of general ridge room to close, and only 2 meters of stroke to drive the curtain of the ridge room at the end to close. Therefore, the curtain drawing device needs to be additionally installed with corresponding driving mechanism for the ridge room with narrow width, which increases the installation cost of the curtain drawing device, or the curtain on the ridge room with narrow width can only be fixed or not installed, which affects the illumination requirement of the crops planted below and influences the control of the whole greenhouse environment, and the use is inconvenient. SUMMARY

[0004] To solve or partially solve the problems in the prior art, the utility model provides an irregular greenhouse curtain drawing device, which aims at solving the technical problem that the existing steel wire curtain drawing device or gear and rack curtain drawing device is not suitable for irregular continuous ridge greenhouse.

[0005] The irregular greenhouse curtain drawing device comprises a continuous ridge greenhouse steel frame, a slide rail is arranged on the top of the continuous ridge greenhouse steel frame, curtains are arranged on the slide rail at intervals, one end of the curtain is fixedly connected with the slide rail, and the other end of the curtain is slidably connected with the slide rail.

[0006] A pulling rod is arranged below each curtain, the pulling rod is slidably connected with the fixed end of the curtain, and the pulling rod is fixedly connected with the movable end of the curtain.

[0007] The curtain comprises long curtains and short curtains, the ends of the two pulling rods corresponding to the adjacent long curtains are fixedly connected with each other, and the two pulling rods corresponding to the adjacent long curtain and short curtain are connected through a connecting piece.

[0008] The connecting piece comprises a connecting frame, a spring, a fixed guide wheel and a movable guide wheel, the bottom of the connecting frame is rotatably provided with the fixed guide wheel, the top of the fixed guide wheel is rotatably provided with the movable guide wheel, and the movable guide wheel can move up and down along the vertical direction; the connecting frame is provided with the spring for driving the movable guide wheel to move downwards; during installation, the connecting frame is fixedly connected with the pull rod corresponding to the long curtain, and the pull rod corresponding to the short curtain is arranged between the fixed guide wheel and the movable guide wheel.

[0009] The bottom of one of the pull rods is provided with a rack, and the connecting roof greenhouse steel frame is provided with a driving motor, and the output shaft of the driving motor is provided with a gear engaged with the rack.

[0010] In some schemes, the connecting frame comprises a horizontal plate and two vertical plates arranged in parallel, and the two ends of the horizontal plate are fixedly connected with the top ends of the two vertical plates respectively;

[0011] The vertical plates are provided with waist-shaped holes arranged along the vertical direction, the movable guide wheel is arranged between the two vertical plates, and the two ends of the rotating shaft of the movable guide wheel are arranged in the waist-shaped holes respectively, so that the movable guide wheel can move up and down;

[0012] The spring has two ends, which are respectively arranged outside the two vertical plates, the upper end of the spring is connected with the rotating shaft of the movable guide wheel, and the lower end of the spring is fixedly connected with the vertical plate.

[0013] In some schemes, the movable end of the curtain is provided with a supporting rod, the two ends of the supporting rod are respectively provided with pulleys, and the pulleys are arranged on the slide rails to realize the sliding connection between the movable end of the curtain and the slide rails.

[0014] The technical scheme provided by the utility model can have the following beneficial effects:

[0015] The pull rod corresponding to the long curtain is fixedly connected with the connecting frame, the fixed guide wheel and the movable guide wheel are used to clamp the pull rod corresponding to the short curtain from the upper side and the lower side, so that the pull rod corresponding to the long curtain and the short curtain is connected, the long curtain and the short curtain are synchronously unfolded within the stroke of the short curtain, the guide wheel rotates when the short curtain moves to the limit position, so that only the long curtain continues to unfold, and the curtain drawing device is applied to the irregular connecting roof greenhouse, two sets of driving mechanisms are not needed, and the cost of the device is reduced.

[0016] It should be understood that the foregoing general description and the following detailed description are only exemplary and explanatory, and cannot limit the utility model. BRIEF DESCRIPTION OF DRAWINGS

[0017] The above and other objects, features and advantages of the present invention will become more apparent from the accompanying drawings, in which like reference numerals generally represent like parts.

[0018] Figure 1 This is a schematic diagram of the structure of the curtain-pulling device shown in an embodiment of the present invention;

[0019] Figure 2 This is another structural schematic diagram of the curtain-pulling device shown in this embodiment of the utility model;

[0020] Figure 3 This is a schematic diagram of the curtain-pulling device according to an embodiment of the present invention.

[0021] Figure 4 This is a schematic diagram of the connecting component of the curtain-pulling device shown in an embodiment of the present invention.

[0022] Figure label:

[0023] 1. Steel frame of multi-span greenhouse; 2. Slide rail; 301. Long curtain; 302. Short curtain; 3. Curtain; 4. Tie rod; 5. Connector; 501. Connecting frame; 5011. Horizontal plate; 5012. Vertical plate; 5013. Waist-shaped hole; 502. Spring; 503. Fixed guide wheel; 504. Movable guide wheel; 6. Drive motor; 7. Support rod; 8. Pulley. Detailed Implementation

[0024] The present invention will be further described in detail below with reference to the accompanying drawings and specific embodiments, but the scope of protection of the present invention is not limited to the content described.

[0025] Example 1:

[0026] like Figure 1 As shown, this application provides an irregular greenhouse curtain device, which is mainly applicable to multi-span greenhouses, and each greenhouse has the same length. It includes a multi-span greenhouse steel frame 1, and a slide rail 2 is provided on the top of the multi-span greenhouse steel frame 1. Curtains 3 are arranged at intervals on the slide rail 2. The width of each curtain 3 matches the width of each greenhouse so that each curtain 3 can provide shading for a greenhouse.

[0027] One end of the curtain 3 is fixedly connected with the slide rail 2, and the other end is slidably connected with the slide rail 2; one pull rod 4 is arranged below each of the curtains 3, the pull rod 4 is slidably connected with the fixed end of the curtain 3, and the pull rod 4 is fixedly connected with the movable end of the curtain 3; the end portions of the two pull rods 4 corresponding to the adjacent curtains 3 are fixedly connected with each other, so that all the pull rods 4 are connected as a whole; during use, as long as one of the pull rods 4 is pulled to move, all the other pull rods 4 can move together. The bottom of one of the pull rods 4 is provided with a rack, the greenhouse steel frame 1 is provided with a driving motor 6, the driving motor 6 is a stepping motor or a servo motor, and the output shaft of the driving motor 6 is provided with a gear meshing with the rack.

[0028] When the curtain 3 needs to be closed, the driving motor 6 is powered to rotate, so as to drive the gear to rotate, the gear drives the rack to move, and the movable end of the curtain 3 is driven by the pull rod 4 to move away from or close to the fixed end, so as to open or close the curtain 3.

[0029] In the embodiment, the slide rail 2 is a steel pipe, and there are two slide rails 2 arranged on the two sides of the inside of the greenhouse and arranged along the length direction of the greenhouse; the movable end of the curtain 3 is provided with a support rod 7 fixedly connected with the movable end of the curtain 3, so as to maintain the tension state of the curtain 3, and the movable end of the curtain 3 will not be folded and contracted due to gravity; the two ends of the support rod 7 are provided with pulleys 8, and the two pulleys 8 are arranged on the two slide rails 2 respectively, so as to realize the slidable connection between the movable end of the curtain 3 and the slide rail 2.

[0030] In some specific embodiments, the slide rail 2 is a steel wire rope, and the two ends of the support rod 7 are connected with the steel wire rope through a thimble, so as to realize the slidable connection between the support rod 7 and the slide rail 2.

[0031] Embodiment two:

[0032] Based on embodiment one, in the embodiment, as shown in Figure 2 , Figure 3 and Figure 4 , the lengths of the greenhouses are not all equal, the lengths of the greenhouses located at the ends are shorter, in order to make the width of each curtain 3 match the width of each greenhouse, the curtain 3 located in the greenhouse at the end is a short curtain 302, and the rest of the greenhouses use long curtains 301, the end portions of the two pull rods 4 corresponding to the adjacent long curtains 301 and long curtains 301 are fixedly connected with each other, and the two pull rods 4 corresponding to the adjacent long curtains 301 and short curtains 302 are connected through the connecting piece 5; in this way, when the driving motor 6 drives one of the pull rods 4 to move, the other pull rods 4 can move together, so that one driving mechanism can drive all the curtains 3 in the greenhouse to open or close, which effectively reduces the number of driving mechanisms and the installation cost of the curtain pulling device.

[0033] In the embodiment, the connecting piece 5 comprises a connecting frame 501, a spring 502, a fixed guide wheel 503 and a movable guide wheel 504. The fixed guide wheel 503 is rotatably installed at the bottom of the connecting frame 501. The movable guide wheel 504 is rotatably installed above the fixed guide wheel 503 and can move up and down in the vertical direction. Specifically, the connecting frame 501 comprises a horizontal plate 5011 and two vertical plates 5012 arranged in parallel. The two ends of the horizontal plate 5011 are fixedly connected with the top ends of the two vertical plates 5012 respectively. A waist-shaped hole 5013 arranged in the vertical direction is formed in each vertical plate 5012. The movable guide wheel 504 is arranged between the two vertical plates 5012, and the two ends of the rotating shaft of the movable guide wheel 504 are respectively arranged in the waist-shaped holes 5013, so that the movable guide wheel 504 can move up and down. The connecting frame 501 is provided with the spring 502 for driving the movable guide wheel 504 to move downward. Specifically, the spring 502 has two ends, which are respectively arranged outside the two vertical plates 5012. The upper end of the spring 502 is connected with the rotating shaft of the movable guide wheel 504, and the lower end of the spring 502 is fixedly connected with the vertical plate 5012. The spring 502 is in a stretched state, so that the spring 502 pulls the movable guide wheel 504 to move downward.

[0034] During installation, the connecting frame 501 is fixedly connected with the pull rod 4 corresponding to the long curtain 301, and the pull rod 4 corresponding to the short curtain 302 is arranged between the fixed guide wheel 503 and the movable guide wheel 504. Thus, the pull rod 4 corresponding to the short curtain 302 is clamped from the upper and lower sides by the fixed guide wheel 503 and the movable guide wheel 504. When the pull rod 4 corresponding to the long curtain 301 moves, the pull rod 4 corresponding to the short curtain 302 can be driven to move by the connecting piece 5, so that all the curtains 3 in the multi-span greenhouse can move synchronously.

[0035] During the pulling process, the short curtain 302 moves synchronously with the long curtain 301 within the effective stroke of the short curtain 302. When the short curtain 302 moves to the limit position, the free end of the short curtain 302 cannot continue to move, and the corresponding pull rod 4 is no longer pulled. Instead, the fixed guide wheel 503 and the movable guide wheel 504 rotate, so that the long curtain 301 can continue to move without being affected by the short curtain 302. Thus, the device can be applied to irregular multi-span greenhouse.

[0036] It is conceivable that the maximum static friction force that the short curtain 302 is subjected to when being unfolded is less than the maximum static friction force that the fixed guide wheel 503 and the movable guide wheel 504 are subjected to when rotating, and for this reason, the number of connecting members 5 can be increased so that the fixed guide wheel 503 and the movable guide wheel 504 do not rotate until the short curtain 302 is completely opened or closed, i.e. the corresponding pull rod 4 of the short curtain 302 and the corresponding pull rod 4 of the long curtain 301 remain in a state of relative rest under the action of the connecting members 5.

[0037] The above has described the various embodiments of the present application, the above description is exemplary, not exhaustive, and is not limited to the disclosed embodiments. Many modifications and changes are obvious to those skilled in the art without departing from the scope and spirit of the described embodiments. The selection of the terms used herein is intended to best explain the principles of the embodiments, practical applications or improvements to the technology in the market, or to enable other ordinary skilled in the art to understand the embodiments disclosed herein.

Claims

1. An irregular greenhouse curtain pulling device, comprising a multi-span greenhouse steel frame (1), characterized in that: a sliding rail (2) is arranged on the top of the multi-span greenhouse steel frame (1), and curtains (3) are arranged on the sliding rail (2) at intervals, one end of each curtain (3) is fixedly connected with the sliding rail (2), and the other end is slidably connected with the sliding rail (2); a pulling rod (4) is arranged below each curtain (3) one by one, the pulling rod (4) is slidably connected with the fixed end of the curtain (3), and the pulling rod (4) is fixedly connected with the movable end of the curtain (3); the curtain (3) comprises long curtains (301) and short curtains (302), the ends of the two pulling rods (4) corresponding to adjacent long curtains (301) and long curtains (301) are fixedly connected with each other, and the two pulling rods (4) corresponding to adjacent long curtains (301) and short curtains (302) are connected through a connecting piece (5); the connecting piece (5) comprises a connecting frame (501), a spring (502), a fixed guide wheel (503), and a movable guide wheel (504), the fixed guide wheel (503) is rotatably installed on the bottom of the connecting frame (501), the movable guide wheel (504) is rotatably installed above the fixed guide wheel (503), and the movable guide wheel (504) can move up and down in the vertical direction; the connecting frame (501) is provided with the spring (502) for driving the movable guide wheel (504) to move downward; during installation, the connecting frame (501) is fixedly connected with the pulling rod (4) corresponding to the long curtain (301), and the pulling rod (4) corresponding to the short curtain (302) is arranged between the fixed guide wheel (503) and the movable guide wheel (504); one end of the pulling rod (4) is provided with a rack, and a driving motor (6) is arranged on the multi-span greenhouse steel frame (1), and a gear meshing with the rack is arranged on the output shaft of the driving motor (6).

2. The irregular greenhouse curtain pulling device according to claim 1, characterized in that: the connecting frame (501) comprises a horizontal plate (5011) and two vertical plates (5012) arranged in parallel, and the two ends of the horizontal plate (5011) are fixedly connected with the top ends of the two vertical plates (5012); a waist-shaped hole (5013) arranged in the vertical direction is formed in the vertical plate (5012), the movable guide wheel (504) is arranged between the two vertical plates (5012), and the two ends of the rotating shaft of the movable guide wheel (504) are arranged in the waist-shaped hole (5013), so that the movable guide wheel (504) can move up and down; the spring (502) has two ends, which are respectively located outside the two vertical plates (5012), the upper end of the spring (502) is connected with the rotating shaft of the movable guide wheel (504), and the lower end of the spring (502) is fixedly connected with the vertical plate (5012).

3. The irregular greenhouse curtain pulling device according to claim 1, characterized in that: The movable end of the curtain (3) is provided with a supporting rod (7), both ends of the supporting rod (7) are respectively provided with pulleys (8), the pulleys (8) are arranged on the slide rail (2), so as to realize the sliding connection between the movable end of the curtain (3) and the slide rail (2).

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