A roller blind machine and a roller blind greenhouse

Abstract

The utility model provides a kind of roller shutter machine and roller shutter greenhouse, the roller shutter machine includes support rod, follow-up rod, reel, two travel switches and controller, support rod is suitable for being fixed in the side of greenhouse, the bottom of support rod is rotatably arranged on ground, follow-up rod one end is rotatably connected with the top of support rod, reel is rotatably arranged in the other end of follow-up rod, curtain cloth is wound on reel, reel can move along the shed surface of greenhouse, follow-up rod and support rod can move along with reel, two travel switches are respectively arranged in the start position and end position of the travel of reel, reel can push travel switch output position signal in the start position or the end position, the position signal is generated by mechanical contact type switch and / or hall type switch, controller controls reel operation based on position signal. The roller shutter machine of the utility model embodiment has the advantages of low cost.

Description

Technical Field

[0001] This utility model relates to the field of rolling shutter machine technology, and in particular to a rolling shutter machine and a rolling shutter greenhouse. Background Technology

[0002] In agricultural facilities such as vegetable greenhouses and solar greenhouses, the automatic rolling and unrolling of insulation blankets or curtains is a crucial step in achieving intelligent control of temperature and light within the greenhouse. With the development of agricultural automation, some rolling curtain machines have begun to incorporate automatic control systems. A key aspect of this is accurately acquiring the position information of the rolling drum during operation, so that it can automatically stop at the starting and ending points of rolling and laying.

[0003] In the existing technology, the control method of the rolling shutter machine is manual control or semi-automatic control. The operator controls the rolling and laying of the thermal insulation curtain by operating the operation switch, which is labor-intensive and inefficient. Utility Model Content

[0004] This utility model provides a roller shutter machine to solve the defects of existing roller shutter machine control that is labor-intensive and inefficient, so as to facilitate the control of the roller shutter machine.

[0005] This utility model also provides a roller shutter greenhouse.

[0006] This utility model provides a rolling shutter machine, comprising: A support rod, suitable for fixing to one side of the greenhouse, the bottom of the support rod being rotatably mounted on the ground; The follower rod is rotatably connected at one end to the top of the support rod; A roller is rotatably mounted at the other end of the follower rod, a curtain is wound around the roller, the roller can move along the roof of the greenhouse, and the follower rod and the support rod can move with the roller; Two limit switches are respectively located at the start and end positions of the drum's travel. At the start or end position, the drum can push the trigger to rotate so that the upper and lower contacts are connected, thereby outputting a position signal. At the starting position or the ending position, the drum can push the limit switch to output a position signal, which is generated by a mechanical contact switch and / or a Hall effect switch. The controller controls the operation of the drum based on the position signal.

[0007] In some embodiments, the limit switch includes: A trigger and a base plate, wherein the trigger has an upper contact and the base plate has a lower contact; the trigger is rotatably mounted on the base plate; An elastic element has one end connected to the trigger element and the other end connected to the base plate. The elastic element has a force that causes the trigger element to rotate away from the base plate.

[0008] In some embodiments, one end of the trigger is connected to one end of the base plate via a pin.

[0009] In some embodiments, the limit switch includes: A magnetic component is provided on the side of the trigger adjacent to the base plate; A Hall switch is located on the side of the base plate adjacent to the trigger element and is electrically connected to the controller; The Hall switch outputs different electrical signals based on the relative position of the magnetic element and the Hall switch.

[0010] In some embodiments, the limit switch includes a starting limit switch disposed at the bottom of the greenhouse, the base plate of the starting limit switch being arranged along the height direction of the greenhouse, and the trigger element of the starting limit switch being disposed on the side of the base plate adjacent to the greenhouse.

[0011] In some embodiments, the limit switch includes an end limit switch, which is disposed on the top of the greenhouse, the base plate of the end limit switch is arranged along the width direction of the greenhouse, and the trigger of the end limit switch is disposed above the base plate.

[0012] In some embodiments, the roller shutter machine includes a drive unit disposed on the follower rod, the drive unit is capable of driving the roller to rotate, and the drive unit is electrically connected to the controller.

[0013] In some embodiments, the end limit switch is connected to the greenhouse or the curtain, and the connection method is at least one of Velcro fastening, threaded connection, hook connection, and binding connection.

[0014] In some embodiments, the limit switch outputs the position signal via a two-core or three-core cable; And / or, the limit switch outputs the position signal via Bluetooth or WiFi.

[0015] In some embodiments, the limit switch includes a start limit switch, an end limit switch, and at least one midpoint limit switch to enable segmented control of the curtain.

[0016] In some embodiments, the roller shutter machine includes a manual control box, which is equipped with a manual switch and an emergency stop button.

[0017] An embodiment of this utility model discloses a roller shutter greenhouse, comprising: Roller blind machine, wherein the roller blind machine is the roller blind machine described in any of the above embodiments; The greenhouse has a vertical wall on one side, a support rod on the other side, one end of the curtain fixed to the vertical wall, and the other end of the curtain wound around the roller.

[0018] The roller shutter machine of this embodiment employs a purely mechanical contact limit switch, a purely Hall effect limit switch, or a combination of both. It can accurately and in real-time sense the position of the curtain during operation and automatically output position signals to achieve positioning and automated control of the rolling and lowering processes. Compared to traditional methods relying on manual judgment and operation, this solution reduces reliance on manpower and improves operational efficiency. Attached Figure Description

[0019] To more clearly illustrate the technical solutions in this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are some embodiments of this utility model. For those skilled in the art, other drawings can be obtained from these drawings without creative effort.

[0020] Figure 1 This is a schematic diagram of the roller shutter machine provided by this utility model at the starting position.

[0021] Figure 2 This is a schematic diagram of the roller shutter machine provided by this utility model at the end position.

[0022] Figure 3 This is a schematic diagram of the limit switch for the roller shutter machine provided by this utility model.

[0023] Figure 4 This is a schematic diagram of another embodiment of the limit switch for the roller shutter machine provided by this utility model.

[0024] Figure label: 100. Roller shutter machine; 200. Greenhouse; 300. Ground; 400. Vertical wall; 1. Support rod; 2. Follower rod; 3. Roller drum; 4. Curtain fabric; 5. Limit switch; 6. Trigger element; 61. Upper contact; 7. Base plate; 71. Lower contact; 8. Elastic component; 9. Pin; 10. Magnetic component; 11. Hall effect switch; 12. Start limit switch; 13. End limit switch; 14. Drive unit; 15. Manual control box. Detailed Implementation

[0025] To make the objectives, technical solutions, and advantages of this utility model clearer, the technical solutions of this utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this utility model, not all embodiments. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this utility model.

[0026] like Figures 1 to 4 As shown, the roller shutter machine 100 of this utility model embodiment includes a support rod 1, a follower rod 2, a roller 3, two limit switches 5 and a controller.

[0027] The support rod 1 is suitable for fixing to one side of the greenhouse 200, and the bottom of the support rod 1 is rotatably set on the ground 300.

[0028] One end of the follower rod 2 is rotatably connected to the top of the support rod 1.

[0029] The drum 3 is rotatably mounted on the other end of the follower rod 2. A curtain 4 is wound around the drum 3. The drum 3 can move along the surface of the greenhouse 200. The follower rod 2 and the support rod 1 can move with the drum 3.

[0030] Two limit switches 5 are respectively located at the start and end positions of the drum 3's travel. At the start or end position, the drum 3 can actuate the limit switches 5 to output a position signal, which is generated by a mechanical contact switch and / or a Hall effect switch. At the start or end position, the drum 3 can also actuate the trigger 6 to rotate, causing the upper contact 61 and the lower contact 71 to conduct, thereby outputting a position signal.

[0031] The controller controls the operation of drum 3 based on position signals.

[0032] For example, support rod 1 is located on one side of greenhouse 200, and support base is provided on ground 300. The bottom of support rod 1 is hinged to support base, and the top of support rod 1 is hinged to the top of follower rod 2 so that follower rod 2 can swing relative to support rod 1.

[0033] The roller 3 is located at the bottom of the follower rod 2, and the roller 3 can move along the roof surface of the greenhouse 200. When the roller 3 rotates, it can release and store the curtain 4.

[0034] One end of the curtain 4 is wound around the roller 3, and the other end is fixed to the vertical wall 400 of the greenhouse 200. When the roller 3 rotates, the roller 3 rolls forward or backward on the greenhouse surface, realizing the rolling up or laying of the curtain 4.

[0035] Limit switches 5 are installed at the start and end points of the running path of the drum 3. When the drum 3 runs to the start or end point, the drum 3 will push the limit switch 5 to output a position signal.

[0036] Limit switch 5 can be a purely mechanical limit switch using only mechanical contact structure, utilizing the movement of drum 3 to trigger mechanical components to generate on / off signals to provide position information. Alternatively, limit switch 5 can be a pure Hall effect limit switch using only the Hall effect principle, where a magnet moves with the moving component, causing the Hall element to sense changes in the magnetic field and output an electrical signal, achieving non-contact position detection. Or, limit switch 5 can be a composite limit switch combining a mechanical switch and a Hall effect switch, providing both mechanical contact signals and Hall effect sensing signals, thus achieving dual signal output, improving the reliability and fault tolerance of position detection, and adapting to different environmental conditions and control requirements.

[0037] Hall effect switches have the advantages of being non-contact, wear-free, and having a long lifespan, and can work stably in harsh environments such as humid and dusty conditions.

[0038] After receiving the position signal, the controller determines that the drum 3 has reached the starting or ending position, and then controls the motor to stop running, realizing automatic start and stop.

[0039] In existing technologies, the commonly used limit detection methods on roller shutter machines mainly include mechanical limit switches, pull-cord encoders, and photoelectric sensors. However, these limit switches generally suffer from problems such as difficult maintenance and high cost.

[0040] In this embodiment of the invention, the roller shutter machine 100 can push the limit switch 5 at the starting or ending position to output a position signal. The limit switch 5 has a simple structure, low installation precision, is easy to maintain, and has a low cost.

[0041] Therefore, the roller shutter machine 100 of this utility model embodiment has the advantage of low cost.

[0042] In some embodiments, the limit switch 5 includes a trigger 6, a base plate 7, and a resilient member 8. The trigger 6 has an upper contact 61, and the base plate 7 has a lower contact 71. The trigger 6 is rotatably mounted on the base plate 7.

[0043] One end of the elastic element 8 is connected to the trigger element 6, and the other end is connected to the base plate 7. The elastic element 8 has a force that causes the trigger element 6 to rotate away from the base plate 7.

[0044] Each limit switch 5 includes a trigger 6 rotatably mounted on a base plate 7 and a lower contact 71 fixed on the base plate 7. The trigger 6 has an upper contact 61.

[0045] When the drum 3 reaches the starting or ending position, it will press down the trigger 6, causing it to rotate relative to the base plate 7. This will cause the upper contact 61 to contact and close with the lower contact 71, completing the circuit connection and generating a position signal, which will then be output through the wiring harness.

[0046] The elastic element 8 has elastic restoring force. When the trigger 6 is pressed down by the drum 3, the elastic element 8 is compressed. When the drum 3 leaves the trigger 6, the elastic element 8 causes the trigger 6 to spring back and return to the initial ready-to-trigger state.

[0047] This structure enables the limit switch 5 to have a self-resetting function, ensuring that the limit switch 5 can reliably disconnect the upper contact 61 and the lower contact 71 each time the drum 3 leaves the trigger 6, thus improving the stability of the limit switch 5.

[0048] In some embodiments, one end of the trigger 6 is connected to one end of the base plate 7 via a pin 9.

[0049] One end of the trigger 6 is hinged to one end of the base plate 7 via a pin 9, forming a stable rotating connection structure that allows the trigger 6 to rotate smoothly around the pin 9, ensuring flexible operation.

[0050] In some embodiments, the limit switch 5 includes a magnetic element 10 and a Hall switch 11.

[0051] The magnetic component 10 is located on the side of the trigger component 6 adjacent to the base plate 7.

[0052] Hall switch 11 is located on the side of base plate 7 adjacent to trigger 6 and is electrically connected to controller.

[0053] The Hall switch 11 outputs different electrical signals based on the relative position of the magnetic element 10 and the Hall switch 11.

[0054] The magnetic component 10 is installed on the side of the trigger component 6 near the base plate 7 and rotates synchronously with the trigger component 6.

[0055] The Hall switch 11 is fixed at the corresponding position on the base plate 7 and is electrically connected to the controller via a wiring harness. When the trigger 6 is pressed down by the drum 3, the magnetic component 10 moves closer to the Hall switch 11, and the change in magnetic field triggers the Hall switch 11 to output an electrical signal.

[0056] When the trigger 6 is reset and lifted by the elastic element 8, the magnetic element 10 moves away from the Hall switch 11, and the Hall switch 11 changes its output state accordingly.

[0057] In this way, the Hall switch 11 can output different electrical signals to the controller according to the change in the relative position of the magnetic component 10, so as to realize non-contact detection of the trigger action.

[0058] The roller shutter machine 100 of this utility model adds a Hall effect sensor as an electrical signal feedback path on the basis of the original upper contact 61 and lower contact 71 being connected, forming a "mechanical + electronic" dual detection mechanism. This effectively avoids the signal loss problem caused by contact oxidation, dust covering or mechanical jamming, and significantly improves the reliability and safety of the limit switch 5.

[0059] Meanwhile, the Hall switch 11 is a contactless element with strong anti-interference ability and long life, making it particularly suitable for long-term stable operation in a humid and dusty greenhouse environment.

[0060] In some embodiments, the limit switch 5 includes a starting limit switch 12, which is located at the bottom of the greenhouse 200. The base plate 7 of the starting limit switch 12 is arranged along the height direction of the greenhouse 200, and the trigger 6 of the starting limit switch 12 is located on the side of the base plate 7 adjacent to the greenhouse 200.

[0061] The starting limit switch 12 is fixed to a support platform 300 mm above the ground by bolts.

[0062] The starting limit switch 12 is set at the starting position at the bottom of the greenhouse 200 to detect the initial running point of the drum 3. Its base plate 7 is arranged vertically along the height direction of the greenhouse 200, that is, it is installed perpendicular to the ground 300. The trigger 6 is located on the side of the base plate 7 close to the greenhouse 200, facing the running direction of the drum 3.

[0063] When the drum 3 is in the starting position, its rollers press against the trigger 6, causing the starting limit switch 12 to output a starting position signal.

[0064] The starting limit switch 12 is fixed to the support platform embedded in the ground 300 by bolts. The installation is firm and reliable and is not easy to be displaced by the rolling of the drum 3 or by external stepping.

[0065] The support platform can be made of metal or concrete to ensure stability during long-term use.

[0066] In this embodiment of the utility model, the starting limit switch 12 of the roller shutter machine 100 is arranged vertically so that the trigger 6 is directly facing the direction of travel of the roller 3, so that the force is directly applied and the response is rapid.

[0067] In some embodiments, the limit switch 5 includes an end limit switch 13, which is located on the top of the greenhouse 200. The base plate 7 of the end limit switch 13 is arranged along the width direction of the greenhouse 200, and the trigger 6 of the end limit switch 13 is located above the base plate 7.

[0068] The end-of-travel switch 13 is located at the end of the travel distance at the top of the greenhouse 200 and is used to detect the termination signal when the drum 3 reaches the end position.

[0069] Its base plate 7 is arranged horizontally along the width of the greenhouse 200, that is, roughly parallel to the ground 300, and is installed on the upper surface of the greenhouse 200 or the top surface of the wall 400. The trigger 6 is set above the base plate 7 and faces upward, so that when the drum 3 rolls to the end position, it directly hits or squeezes the trigger 6, causing it to rotate downward, thereby realizing the closure of the upper and lower contacts 71 and the sensing action of the magnetic component 10 and the Hall switch 11.

[0070] The roller shutter machine 100 of this utility model embodiment has a horizontal arrangement that can adapt to the movement trajectory of the roller 3 when it rolls on the ceiling and approaches the top end point, ensuring that the roller 3 makes reliable contact with the end limit switch 13 and is triggered in a timely manner.

[0071] In some embodiments, the end-limit switch 13 is connected to the greenhouse 200 via at least one of the following methods: Velcro fastening, threaded connection, hook connection, and binding connection. This ensures the end-limit switch 13 is securely installed and allows for selection of the installation method according to actual usage needs, facilitating quick installation or disassembly. For example, the end-limit switch 13 is connected to the greenhouse 200 via Velcro, with one side of the Velcro fastener fixed to the base plate 7 of the end-limit switch 13, and the other side sewn or pasted onto the surface of the greenhouse 200. The strong adhesive force between the hook and loop sides of the Velcro enables quick installation and secure fixation of the end-limit switch 13. The end-limit switch 13 is also fixed to the frame of the greenhouse 200 by bolts or ropes.

[0072] In some embodiments, the roller shutter machine 100 includes a drive member 14, which is disposed on the follower rod 2. The drive member 14 can drive the roller drum 3 to rotate and is electrically connected to the controller.

[0073] The drive unit 14 is mounted on the follower rod 2 and is connected to the drum 3 for transmission, providing power for the rotation of the drum 3. A common transmission structure such as a drive wheel, conveyor belt or gear is provided between the drive unit 14 and the drum 3.

[0074] The drive unit 14 is electrically connected to the controller. The controller determines the current position of the roller 3 based on the received limit switch 5 signal (including mechanical contact signal and / or Hall switch 11 signal), and then sends start, stop or reverse command to the drive unit 14 to realize the automatic start and stop and direction control of the roller shutter machine 100.

[0075] For example, when the controller detects that the starting limit switch 12 is closed, it determines that the drum 3 is in the starting position and can start the drive unit 14 to rotate forward to start rolling the curtain; when it detects that the ending limit switch 13 is closed, it immediately cuts off the power to the drive unit 14 and stops running to prevent over-winding and damage to the equipment.

[0076] The roller shutter machine 100 of this utility model embodiment has a control method that not only improves the automation level of the roller shutter machine 100 and reduces manual intervention, but also effectively avoids mechanical damage caused by misoperation or loss of control, thereby improving the safety and operating efficiency of the roller shutter machine 100.

[0077] Meanwhile, the drive component 14 is directly mounted on the follower rod 2 and moves together with the drum 3. It has a compact structure, a short power transmission path, low energy loss, and is easy to maintain.

[0078] In some embodiments, the roller shutter machine 100 includes a manual control box 15, which is equipped with a manual switch and an emergency stop button.

[0079] The manual control box 15 is usually installed near the roller shutter machine 100 in an easily accessible location, and contains a manual switch and an emergency stop button.

[0080] The manual switch can be used to control the forward rotation (rolling up the curtain) or reverse rotation (releasing the curtain) of the drum 3 by manual operation during the automatic control failure or debugging stage, so as to realize the direct start and stop control of the curtain rolling machine 100.

[0081] The emergency stop button serves as a safety protection device. In the event of an abnormal situation (such as malfunction of limit switch 5, jamming of curtain 4, or equipment collision), the operator can immediately press the button to quickly cut off the power supply to drive component 14, forcibly stop the operation of drum 3, and prevent the accident from escalating.

[0082] The manual control box 15 not only improves the operational flexibility and emergency response capability of the rolling shutter machine 100, but also provides a reliable means of manual intervention for automatic control, further ensuring the safety of equipment and personnel.

[0083] In some embodiments, the limit switch 5 outputs a position signal via a two-core or three-core cable.

[0084] Limit switch 5 can output the position signal via a two-core or three-core cable in a wired manner, achieving stable and reliable signal transmission.

[0085] In some embodiments, the limit switch 5 outputs a position signal via Bluetooth or WiFi. This facilitates remote monitoring and data transmission in situations where wiring is inconvenient or flexible deployment is required, thus balancing installation needs and communication reliability in different application scenarios.

[0086] In some embodiments, the limit switch 5 includes a start limit switch 12, an end limit switch 13, and at least one midpoint limit switch to enable segmented control of the curtain 4.

[0087] For example, there can be 1 to 5 midpoint limit switches. By arranging the starting limit switch 12 and the ending limit switch 13, and by arranging multiple midpoint limit switches in the middle position, the operating status of the curtain 4 at different stages can be detected in real time, and segmented control of its unfolding or closing process can be realized, thereby accurately controlling the curtain 4 to stay in the preset position to meet different ventilation, lighting or heat preservation needs.

[0088] The roller shutter greenhouse of this utility model embodiment includes a roller shutter machine 100 and a greenhouse 200.

[0089] The roller shutter machine 100 is the roller shutter machine 100 described in any of the above embodiments.

[0090] A vertical wall 400 is provided on one side of the greenhouse 200, and a support rod 1 is provided on the other side of the greenhouse 200. One end of the curtain 4 is fixed to the vertical wall 400, and the other end of the curtain 4 is wound around the roller 3.

[0091] In some embodiments, the limit switch 5 is connected to the controller via a wiring harness to output a signal. In other embodiments, the limit switch 5 has a wireless module, and the limit switch 5 outputs wireless signal data via Bluetooth or Wi-Fi.

[0092] Among related technologies, mechanical limit switches are simple in structure but prone to wear and have a short lifespan; pull-cord encoders are limited by the length of the pull cord and the rebound force, making them unsuitable for roller shutter machines with high height or large span, and pull-cord encoders are easily damaged by impact. Photoelectric sensors, on the other hand, require high installation accuracy and are easily affected by sunlight interference.

[0093] Compared to traditional mechanical limit switches 5, which are easily damaged by impact, the limit switch 5 in the roller shutter machine 100 of this utility model uses the roller 3 to slowly press the trigger 6, resulting in stable force and small impact. Combined with the elastic element 8 with high elasticity, mechanical wear is reduced. At the same time, the combination with Hall sensor realizes dual detection. Even if the mechanical contacts have slight aging or poor contact, the system can still work normally by relying on the Hall signal, thereby significantly improving the service life and operational reliability of the limit switch 5.

[0094] Compared to the limitations of pull-wire encoders, which are restricted by the length of the pull wire, the rebound force, and the poor impact resistance, the roller shutter machine 100 of this utility model embodiment does not require pull-wire transmission, is not limited by the height and span of the roller shutter machine, has a sturdy structure, is impact-resistant, and is suitable for greenhouse environments of various specifications 200.

[0095] Compared to the shortcomings of photoelectric sensors, such as susceptibility to sunlight interference, high installation accuracy requirements, and poor reliability, the roller shutter machine 100 of this utility model adopts a non-visual detection method that combines mechanical triggering and Hall effect sensing. It is completely unaffected by environmental factors such as external light, dust, and fog, and is easy to install and has a reliable response.

[0096] Moreover, compared to mechanical limit switches 5, pull-wire encoders and photoelectric sensors, the limit switch 5 of the roller shutter machine 100 in this embodiment of the present invention has a lower cost and is easier to maintain.

[0097] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of this utility model, and not to limit it. Although this utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some of the technical features. Such modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the spirit and scope of the technical solutions of the embodiments of this utility model.

Claims

1. A rolling shutter machine, characterized in that, include: A support rod (1) is suitable for fixing to one side of the greenhouse, and the bottom of the support rod (1) is rotatably set on the ground; The follower rod (2) is rotatably connected at one end to the top of the support rod (1); A roller (3) is rotatably mounted at the other end of the follower rod (2). A curtain (4) is wound around the roller (3). The roller (3) can move along the roof of the greenhouse. The follower rod (2) and the support rod (1) can move with the roller (3). Two limit switches (5) are respectively located at the start and end positions of the travel of the drum (3). At the start or end position, the drum (3) can push the limit switch (5) to output a position signal. The position signal is generated by a mechanical contact switch and / or a Hall effect switch. The controller controls the operation of the drum (3) based on the position signal.

2. The rolling shutter machine according to claim 1, characterized in that, The limit switch (5) includes: A trigger (6) and a base plate (7), wherein the trigger (6) is provided with an upper contact (61) and the base plate (7) is provided with a lower contact (71), and the trigger (6) is rotatably mounted on the base plate (7); The elastic element (8) is connected at one end to the trigger element (6) and at the other end to the base plate (7). The elastic element (8) has a force that causes the trigger element (6) to rotate away from the base plate (7).

3. The rolling shutter machine according to claim 2, characterized in that, One end of the trigger (6) is connected to one end of the base plate (7) via a pin (9).

4. The rolling shutter machine according to claim 2, characterized in that, The limit switch (5) includes: A magnetic component (10) is provided on the side of the trigger (6) adjacent to the base plate (7); A Hall switch (11) is located on the side of the base plate (7) adjacent to the trigger (6) and is electrically connected to the controller; The Hall switch (11) outputs different electrical signals based on the relative position of the magnetic element (10) and the Hall switch (11).

5. The rolling shutter machine according to claim 2, characterized in that, The limit switch (5) includes a starting limit switch (12), which is located at the bottom of the greenhouse. The base plate (7) of the starting limit switch (12) is arranged along the height direction of the greenhouse, and the trigger (6) of the starting limit switch (12) is located on the side of the base plate (7) adjacent to the greenhouse.

6. The rolling shutter machine according to claim 5, characterized in that, The limit switch (5) includes an end limit switch (13), which is located on the top of the greenhouse. The base plate (7) of the end limit switch (13) is arranged along the width of the greenhouse, and the trigger (6) of the end limit switch (13) is located above the base plate (7).

7. The rolling shutter machine according to claim 6, characterized in that, The end limit switch (13) is connected to the greenhouse or the curtain (4) in at least one of the following methods: Velcro connection, threaded connection, hook connection, and binding connection.

8. The rolling shutter machine according to claim 1, characterized in that, The roller shutter machine includes a drive unit (14), which is mounted on the follower rod (2). The drive unit (14) can drive the roller (3) to rotate. The drive unit (14) is electrically connected to the controller.

9. The rolling shutter machine according to claim 8, characterized in that, The roller shutter machine includes a manual control box (15), which is equipped with a manual switch and an emergency stop button.

10. The rolling shutter machine according to claim 1, characterized in that, The limit switch (5) outputs the position signal through a two-core or three-core cable; And / or, the limit switch (5) outputs the position signal via Bluetooth or WiFi.

11. The rolling shutter machine according to claim 1, characterized in that, The limit switch (5) includes a start limit switch (12), an end limit switch (13) and at least one midpoint limit switch, so as to perform segmented control of the curtain (4).

12. A roll-up greenhouse, characterized in that, include: Roller blind machine, wherein the roller blind machine is the roller blind machine according to any one of claims 1-11; The greenhouse has a vertical wall on one side, a support rod (1) on the other side of the greenhouse, one end of the curtain (4) is fixed to the vertical wall, and the other end of the curtain (4) is wrapped around the roller (3).

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