Sunlight greenhouse curtain device and sunlight greenhouse

Abstract

A sunlight greenhouse curtain device and sunlight greenhouse, including base, first cantilever, second cantileve, curtain part, support arm, controller, the lower end of first cantilever is hinged to base, and the track is installed along first cantilever, and the track is detachably connected to first cantilever through fixing assembly, and the upper end and the lower end close to track are respectively equipped with upper stopper and lower stopper, one end of second cantilever is hinged to the upper end of first cantileve, and the other end of second cantilever is connected to curtain part, the upper end of support arm is hinged with clamping connection assembly for connecting second cantilever, and the lower end of support arm is hinged with the sliding part capable of moving along track, and the controller is electrically connected with curtain part to control curtain part to perform curtain winding and curtain unwinding operation, when the track is worn, the fixing assembly can be directly disassembled, and the track is removed from first connecting arm, so that the first connecting arm does not need to be disassembled and replaced as a whole, the track replacement step is simplified, and material cost is saved.

Description

Technical Field

[0001] This utility model relates to the field of greenhouse technology, and in particular to a solar greenhouse curtain retraction device and a solar greenhouse. Background Technology

[0002] To provide greenhouses with insulation, lighting, ventilation, and shading, frequent rolling and lowering of the curtains is necessary. Early rolling and lowering operations were done manually. To reduce workload and free up manpower, rolling curtain machines are now commonly used. Existing greenhouse rolling curtain machines mainly consist of guide rods, a rolling curtain motor, and a rolling curtain shaft. The rolling curtain motor is movably mounted on the guide rod. One end of the greenhouse curtain or quilt is fixed to the rolling curtain shaft, while the other end is fixed in place. The rolling curtain motor is connected to the rolling curtain shaft, driving the shaft to rotate and thus rolling up or lowering the greenhouse curtain or quilt.

[0003] In view of the aforementioned technical problems, invention patent CN117958059A discloses a rolling shutter device and rolling shutter control method for greenhouses, including a fixing mechanism, a rolling shutter mechanism, and a control mechanism. In the fixing mechanism, a first cantilever, a second cantilever, and a connecting rod form a triangular structure. One end of the connecting rod can slide on the first cantilever, cooperating with the rolling shutter mechanism to perform rolling and lowering operations. A limit component is provided on the first cantilever, which can stop the rolling shutter mechanism from rolling or lowering when the end of the connecting rod slides to the limit component. Simultaneously, an angle sensor is provided on the second cantilever, which can upload the angle information between the second cantilever and the horizontal plane to the control mechanism in real time. The control mechanism can control the rolling shutter mechanism to roll or lower when the angle information reaches a preset angle threshold. By using both the limit component and the angle sensor, excessive rolling and lowering of the rolling shutter mechanism is prevented. Even if one of these methods fails, the other method can still prevent over-rolling or over-lowering of the rolling shutter mechanism, thus avoiding damage and improving its service life.

[0004] However, since the guide rail for the connecting rod is fixed to the first cantilever, the guide rail will wear down during repeated curtain rolling and unrolling operations. When the guide rail wears down, it will affect the normal operation of the curtain rolling and unrolling. To ensure normal curtain rolling and unrolling operations, the first cantilever usually has to be replaced as a whole. This not only requires the disassembly of many accessories (such as cables, control boxes, etc.), but also requires secondary reassembly, making disassembly and installation cumbersome. Secondly, replacing the first cantilever as a whole will also waste raw materials and increase costs due to the large size of the first cantilever. Summary of the Invention

[0005] In order to solve the technical problems existing in the above-mentioned technologies, it is necessary to provide a device for opening and closing curtains in a solar greenhouse.

[0006] A greenhouse curtain retraction device includes a base, a first cantilever, a second cantilever, a curtain section, a support arm, and a controller; The lower end of the first cantilever is hinged to the base, and a track is installed along the first cantilever. The track is detachably connected to the first cantilever by a fixing component. An upper limit switch and a lower limit switch are respectively provided near the upper end and the lower end of the track. One end of the second cantilever is hinged to the upper end of the first cantilever, and the other end of the second cantilever is connected to the roller shutter section; The upper end of the support arm is hinged to a clamping connection assembly for connecting the second cantilever, and the lower end of the support arm is hinged to a sliding part that can move along the track. The controller is electrically connected to the roller blind section to control the roller blind section to perform roller blind and lowering operations.

[0007] Preferably, the fixing component includes a fixing seat and a U-shaped rod; the fixing seat is fixed to the track by bolts, and a groove is provided on one side of the fixing seat to lock the outer wall of the first cantilever. Mounting holes are symmetrically provided on both sides of the fixing seat located in the groove. The end of the U-shaped rod passes through the mounting hole and clamps the first cantilever between the fixing seat and the U-shaped rod. The U-shaped rod and the fixing seat are fastened with nuts.

[0008] Preferably, the inner wall of the groove has a serrated structure.

[0009] Preferably, the mounting hole is elongated along the transverse direction of the fixing seat.

[0010] Preferably, the arc-shaped end of the U-shaped rod is provided with an arc-shaped rubber pad layer on the side near the fixed seat.

[0011] Preferably, the outer wall of the rubber pad layer is provided with anti-detachment protrusions that can lock the arc-shaped end of the U-shaped rod.

[0012] Preferably, the sliding part includes a connecting plate and a stop bar. One end of the connecting plate is hinged to the support arm, and the other end of the connecting plate is rotatably mounted with a roller that can reciprocate along the track. The roller is arranged along the longitudinal direction of the connecting plate. The stop bar is disposed on the connecting plate, and when the connecting plate reciprocates along the track, the stop bar can contact the upper limit switch and the lower limit switch.

[0013] Preferably, the stop bar extends through the front of the connecting plate and is threadedly connected to the connecting plate to adjust the length of the extended stop bar.

[0014] Preferably, the clamping connection assembly includes an upper pressure block and a lower pressure block; the lower end face of the upper pressure block and the upper end face of the lower pressure block both have V-shaped slots. After the upper pressure block and the lower pressure block are fastened together by bolts, the second cantilever can be clamped by the V-shaped slots. The lower end face of the lower pressure block is hinged to the upper end of the support arm.

[0015] A solar greenhouse includes the solar greenhouse curtain retraction device described above.

[0016] Compared with the prior art, the greenhouse curtain raising and lowering device provided by this utility model includes a base, a first cantilever, a second cantilever, a curtain rolling section, a support arm, and a controller. The lower end of the first cantilever is hinged to the base, and a track is installed along the first cantilever. The track is detachably connected to the first cantilever by a fixing component. An upper limit switch and a lower limit switch are respectively provided near the upper and lower ends of the track. One end of the second cantilever is hinged to the upper end of the first cantilever, and the other end of the second cantilever is connected to the curtain rolling section. The upper end of the support arm is hinged to a clamping connection component for connecting the second cantilever, and the lower end of the support arm is hinged to a sliding part that can move along the track. The controller is electrically connected to the curtain rolling section to control the curtain rolling section to perform curtain raising and lowering operations. This utility model uses a fixing component to install the track on the first cantilever. When the track is worn, the fixing component can be directly disassembled to remove the track from the first cantilever, and then a new track can be installed on the first cantilever. There is no need to completely disassemble and replace the first cantilever, which greatly simplifies the track replacement process and saves material costs. Attached Figure Description

[0017] To more clearly illustrate the technical solutions of the embodiments of this utility model, the accompanying drawings used in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0018] Figure 1 This is a schematic diagram of the structure of this utility model.

[0019] Figure 2 This utility model Figure 1 A structural diagram from another angle.

[0020] Figure 3 This utility model Figure 1 A magnified view of a portion of point A in the middle.

[0021] Figure 4 This utility model Figure 1 A magnified view of a section at point B in the middle.

[0022] Figure 5 This is a structural schematic diagram of the fixing component of this utility model.

[0023] Figure 6 This utility model Figure 5 A structural diagram from another angle.

[0024] Figure 7 This is a schematic diagram of the sliding part of the utility model.

[0025] Figure 8 This utility model Figure 7 A structural diagram from another angle.

[0026] Figure 9 This utility model Figure 2 A magnified view of a section at point C.

[0027] Figure 10 This utility model Figure 2 A magnified view of a section at point D.

[0028] In the diagram: base 01, first cantilever 02, second cantilever 03, roller blind section 04, variable frequency motor 41, transmission belt 42, reducer 43, roller blind shaft 44, support arm 05, controller 06, track 07, upper limit switch 08, lower limit switch 09, sliding section 10, connecting plate 101, stop bar 102, roller 103, fixing assembly 20, fixing seat 201, U-shaped rod 202, groove 203, mounting hole 204, rubber pad 30, anti-detachment protrusion 301, clamping connection assembly 40, upper pressure block 401, lower pressure block 402, V-shaped groove 403. Detailed Implementation

[0029] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those skilled in the art without creative effort are within the protection scope of the present utility model.

[0030] In the description of this utility model, it should be understood that the terms "upper", "middle", "outer", "inner", "lower", etc., which indicate orientation or positional relationship, are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the components or elements referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this utility model.

[0031] Please refer to Figures 1 to 4This utility model provides a greenhouse curtain raising and lowering device, including a base 01, a first cantilever 02, a second cantilever 03, a curtain section 04, a support arm 05, and a controller 06. The lower end of the first cantilever 02 is hinged to the base 01. A track 07 is installed along the first cantilever 02, and the track 07 is detachably connected to the first cantilever 02 via a fixing component 20. An upper limit switch 08 and a lower limit switch 09 are respectively provided near the upper and lower ends of the track 07. By using the fixing component 20 to install the track 07 on the first cantilever 02, when the track 07 becomes worn, the fixing component 20 can be directly disassembled, thereby removing the track 07 from the first cantilever 02 and installing a new track 07 on the first cantilever 02. This eliminates the need to completely disassemble and replace the first cantilever 02, greatly simplifying the track 07 replacement process and saving material costs. One end of the second cantilever 03 is hinged to the upper end of the first cantilever 02, and the other end of the second cantilever 03 is connected to the curtain section 04. The upper end of the support arm 05 is hinged to a clamping connection assembly 40 for connecting the second cantilever 03, and the lower end of the support arm 05 is hinged to a sliding part 10 that can move along the track 07. The controller 06 is electrically connected to the roller blind 04 to control the roller blind 04 to perform roller blind and lowering operations.

[0032] When the curtain is rolled up, the curtain section 04 rolls up from the lower end to the upper end of the greenhouse roof. Since the end of the second cantilever 03 is connected to the curtain section 04, as the curtain section 04 moves upward along the top of the greenhouse roof, it will cause the second cantilever 03 to lift upward. At this time, the lower end of the support arm 05 will move upward along the track 07, causing the angle between the second cantilever 03 and the first cantilever 02 to gradually increase. Since the upward lifting action of the second cantilever 03 will cause the lower end of the support arm 05 to move upward along the track 07, the first cantilever 02, the second cantilever 03, and the support arm 05 will always form a stable triangular support structure, thereby ensuring the stable and normal operation of the curtain. The curtain stops rolling after the sliding section 10 contacts the upper limit switch 08.

[0033] When the curtain is lowered, the roller shutter 04 gradually lowers the curtain from the top to the bottom of the greenhouse. As the roller shutter 04 moves downward along the top of the greenhouse, it causes the second cantilever 03 to swing downward. At the same time, the lower end of the support arm 05 moves downward along the track 07, causing the angle between the second cantilever 03 and the first cantilever 02 to gradually decrease. Because the downward swing of the second cantilever 03 causes the lower end of the support arm 05 to move downward along the track 07, a stable triangular support structure is always formed between the first cantilever 02, the second cantilever 03, and the support arm 05, thus ensuring the stable and normal operation of the curtain lowering. The curtain lowering stops after the sliding part 10 contacts the lower limit device 09.

[0034] Please refer to Figure 9 It should be noted that the roller shutter section 04 may include a variable frequency motor 41, a transmission belt 42, a reducer 43, and a roller shutter shaft 44. The end of the second cantilever 03 is fixedly connected to the reducer 43, and the variable frequency motor 41 is fixedly mounted on the reducer 43. The output end of the variable frequency motor 41 is connected to the input end of the reducer 43 via the transmission belt 42. The roller shutter shaft 44 is connected to the output end of the reducer 43, enabling the variable frequency motor 41 to drive the roller shutter shaft 44 to rotate. Since the curtain at the top of the greenhouse is wound on the roller shutter shaft 44, when the controller 09 starts the variable frequency motor 41, the roller shutter shaft 44 will perform the actions of winding or releasing the curtain, thus realizing the roller shutter operation and the lowering of the curtain.

[0035] Correspondingly, the output end of the variable frequency motor 41 can also be connected to the input end of the reducer 43 via a transmission chain.

[0036] Please refer to Figure 5 , Figure 6 In one embodiment, the fixing assembly 20 includes a fixing base 201 and a U-shaped rod 202. The fixing base 201 is fixed to the track 07 by bolts. A groove 203 is provided on one side of the fixing base 201 to hold the outer wall of the first cantilever 02. Mounting holes 204 are symmetrically provided on both sides of the fixing base 201 located in the groove 203. The end of the U-shaped rod 202 passes through the mounting hole 204 and clamps the first cantilever 02 between the fixing base 201 and the U-shaped rod 202. The U-shaped rod 202 and the fixing base 201 are fastened with nuts. During fixing, the arc-shaped section of the U-shaped rod 202 will cover the first cantilever 02. The first cantilever 02 is clamped and fixed by the cooperation between the U-shaped rod 202 and the fixing base 201, thereby connecting the track 07 and the first cantilever 02 into one unit.

[0037] The inner wall of the groove 203 has a serrated structure; the serrated structure can be used to tightly clamp the outer wall of the first cantilever 02.

[0038] To accommodate the installation of the first cantilever 02 and the track 07 of different sizes, the mounting hole 204 is elongated along the transverse direction of the fixing seat 201, and U-shaped rods 202 of different sizes can be used to achieve fixation.

[0039] In one embodiment, an arc-shaped rubber pad 30 is provided on the side of the U-shaped rod 202 near the fixed base 201. After the U-shaped rod 202 presses against the first cantilever 02, the rubber pad 30 increases the friction, and the rubber pad 30 enables flexible pressing, reducing wear between the U-shaped rod 202 and the first cantilever 02. Furthermore, the surface of the rubber pad 30 in contact with the first cantilever 02 can be sanded to further increase friction and improve the stability of the track 07 installation.

[0040] Specifically, an anti-detachment protrusion 301 is provided on the outer wall of the rubber pad 30 to lock the arc-shaped end of the U-shaped rod 202. The anti-detachment protrusion 301 can prevent the rubber pad 30 from moving downward.

[0041] Please refer to Figure 7 , Figure 8 In one embodiment, the sliding part 10 includes a connecting plate 101 and a stop bar 102. One end of the connecting plate 101 is hinged to the support arm 05, and the other end of the connecting plate 101 is rotatably mounted with a roller 103 that can reciprocate along the track 07. The roller 103 is arranged along the longitudinal direction of the connecting plate 101. The stop bar 102 is disposed on the connecting plate 101. When the connecting plate 101 reciprocates along the track 07, the stop bar 102 can contact the upper limit device 08 and the lower limit device 09.

[0042] The stop rod 102 extends through the front of the connecting plate 101 and is threadedly connected to the connecting plate 101 to adjust the length of the stop rod 102.

[0043] Please refer to Figure 10 In one embodiment, the clamping connection assembly 40 includes an upper pressure block 401 and a lower pressure block 402. The lower end face of the upper pressure block 401 and the upper end face of the lower pressure block 402 both have V-shaped grooves 403. The upper pressure block 401 and the lower pressure block 402 can be fastened together with bolts, thereby clamping the second cantilever 03 using the V-shaped grooves 403 on the upper pressure block 401 and the lower pressure block 402, thus achieving the connection between the support arm 05 and the second cantilever 03. The lower end face of the lower pressure block 402 is hinged to the upper end of the support arm 05. The inner surface of the V-shaped groove 403 can be designed with a serrated structure to increase the clamping and fixing effect.

[0044] A solar greenhouse includes a curtain raising and lowering device for raising and lowering the curtain fabric on the top of the solar greenhouse.

[0045] The above-disclosed embodiments are merely preferred embodiments of the present utility model and should not be construed as limiting the scope of the present utility model. Those skilled in the art can understand that implementing all or part of the above-described embodiments and making equivalent changes in accordance with the claims of the present utility model are still within the scope of the utility model.

Claims

1. A device for opening and closing curtains in a solar greenhouse, characterized in that: Includes a base, a first cantilever, a second cantilever, a roller shutter section, a support arm, and a controller; The lower end of the first cantilever is hinged to the base, and a track is installed along the first cantilever. The track is detachably connected to the first cantilever by a fixing component. An upper limit switch and a lower limit switch are respectively provided near the upper end and the lower end of the track. One end of the second cantilever is hinged to the upper end of the first cantilever, and the other end of the second cantilever is connected to the roller shutter section; The upper end of the support arm is hinged to a clamping connection assembly for connecting the second cantilever, and the lower end of the support arm is hinged to a sliding part that can move along the track. The controller is electrically connected to the roller blind section to control the roller blind section to perform roller blind and lowering operations.

2. The greenhouse curtain retraction device according to claim 1, characterized in that: The fixing assembly includes a fixing seat and a U-shaped rod. The fixing seat is fixed to the track by bolts. A groove is provided on one side of the fixing seat to lock the outer wall of the first cantilever. Mounting holes are symmetrically provided on both sides of the fixing seat located in the groove. The end of the U-shaped rod passes through the mounting hole and clamps the first cantilever between the fixing seat and the U-shaped rod. The U-shaped rod and the fixing seat are fastened with nuts.

3. The greenhouse curtain retraction device according to claim 2, characterized in that: The inner wall of the groove has a serrated structure.

4. The greenhouse curtain retraction device according to claim 3, characterized in that: The mounting hole is elongated along the transverse direction of the fixing base.

5. The greenhouse curtain retraction device according to claim 2, characterized in that: The arc-shaped end of the U-shaped rod is provided with an arc-shaped rubber pad layer on the side near the fixed seat.

6. The greenhouse curtain retraction device according to claim 5, characterized in that: The outer wall of the rubber pad layer is provided with anti-detachment protrusions that can lock the arc-shaped end of the U-shaped rod.

7. The greenhouse curtain retraction device according to claim 1, characterized in that: The sliding part includes a connecting plate and a stop bar. One end of the connecting plate is hinged to the support arm, and the other end of the connecting plate is rotatably mounted with a roller that can reciprocate along the track. The roller is arranged along the longitudinal direction of the connecting plate. The stop bar is set on the connecting plate. When the connecting plate reciprocates along the track, the stop bar can contact the upper limit switch and the lower limit switch.

8. The greenhouse curtain retraction device according to claim 7, characterized in that: The stop bar extends through the front of the connecting plate and is threadedly connected to the connecting plate to adjust the length of the extended stop bar.

9. The greenhouse curtain retraction device according to claim 1, characterized in that: The clamping connection assembly includes an upper pressure block and a lower pressure block; the lower end face of the upper pressure block and the upper end face of the lower pressure block both have V-shaped slots. After the upper pressure block and the lower pressure block are fastened together by bolts, the second cantilever can be clamped by the V-shaped slots. The lower end face of the lower pressure block is hinged to the upper end of the support arm.

10. A solar greenhouse, characterized in that: The device for opening and closing the curtains of a solar greenhouse as described in any one of claims 1-9.

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