Greenhouse with anti-overturning function

Abstract

The utility model relates to agricultural planting facility technical field, concretely relates to a greenhouse big -arch shelter with prevent over -winding off quilt function, installs trigger prevent over -winding assembly and with rolling blind device control assembly electric connection in greenhouse big -arch shelter top, triggers stop signal when heat -retaining quilt contact trigger prevent over -winding assembly, provides first over -winding protection through control assembly and stops rolling blind, second, sets up mechanical prevent over -winding assembly in rolling blind device support mechanism, prevents heat -retaining quilt from falling due to over -winding or self -locking failure with mechanical limit mode, provides second over -winding protection, finally, rolling blind device sets up transmission prevent over -winding assembly, disconnects power input when transmission torque exceeds setting threshold, prevents heat -retaining quilt from damaging due to rolling blind strength or over -winding, provides third over -winding protection. Thus, avoid the loss caused by rolling blind machine over -winding or self -locking failure, ensure system redundancy reliability through setting three kinds of protective measures in turn, prevent single prevent over -winding measure failure.

Description

Technical Field

[0001] This utility model relates to the field of agricultural planting facilities technology, specifically to a greenhouse with a function to prevent the blankets from being rolled off. Technical Background

[0002] Currently, greenhouses commonly use mechanical rolling shutter devices to automatically roll up or release the insulation blankets. The main types of equipment include rear-wall fixed type, track type, and front-extending arm type rolling shutter machines. This mechanized operation effectively solves the problem of low efficiency in traditional manual lifting or covering of the curtains, significantly reduces the labor intensity of workers, and saves labor costs.

[0003] However, existing rolling shutter machines have the following problems during use: Operation relies primarily on a motor driving the insulation blanket up or down, usually entirely dependent on manual observation of the blanket's position to control the motor's operation. In practice, operators may be busy with other tasks or fail to notice the blanket has rolled up properly, resulting in failure to stop the motor in time. If this continues, the rolling shutter machine may exceed the greenhouse's height limit, causing the insulation blanket to fall from the roof. This not only damages the insulation blanket but may also damage the motor and other facilities, resulting in direct economic losses.

[0004] Meanwhile, the thickness of thermal insulation blankets is typically 2 centimeters or even more than 3 centimeters, and the weight per unit area is generally 1.5 kilograms or more per square meter. During the rolling process, the thickness of the blanket increases rapidly, and at an elevation of 4 to 6 meters, the diameter of the blanket can even exceed 50 centimeters. A 100-meter-long thermal insulation blanket weighs close to 1,000 kilograms. In this situation, if the thermal insulation blanket falls, due to its large size and heavy weight, it is very easy for it to tear, deform, or even damage the rolling shutter machine and related structures, leading to huge economic losses and wasted time in equipment repair, blanket replacement, and reinstallation. Utility Model Content

[0005] In view of this, it is necessary to provide a greenhouse with a function to prevent the insulation blanket from being rolled up and falling off, so as to stop the motor operation in time when the insulation blanket is rolled up in place.

[0006] A greenhouse with a function to prevent over-rolling and falling of the curtain includes a greenhouse body, a trigger anti-over-rolling component, and a curtain device fixedly installed in front of the greenhouse.

[0007] The roller blind device includes a roller blind mechanism, a support mechanism, and a control component. One end of the support mechanism is rotatably mounted on a support surface, and the other end is fixedly connected to the roller blind mechanism to support the roller blind mechanism. The control component is fixedly mounted on the support mechanism and electrically connected to the roller blind mechanism to control the roller blind mechanism to roll up or release the thermal insulation blanket.

[0008] The trigger anti-over-rolling component is fixedly installed on the top of the greenhouse and electrically connected to the control component. When the insulation blanket comes into contact with the trigger anti-over-rolling component, a stop signal is triggered, and the control component stops the curtain from rolling up, so as to prevent the curtain mechanism from over-rolling.

[0009] Preferably, the roller blind mechanism includes a drive motor, a reduction gear assembly, and a roller blind rod. The drive motor is connected to the reduction gear assembly, and the reduction gear assembly is connected to the roller blind rod, so that the drive motor drives the roller blind rod to roll up or release the thermal insulation blanket.

[0010] Preferably, the support mechanism includes a support rod and a swing arm. One end of the support rod is rotatably mounted on the support surface, and the other end is rotatably connected to the swing arm. One end of the swing arm is fixedly connected to the deceleration assembly, and the other end is rotatably connected to the support rod, so as to support the roller blind mechanism and resist the torque generated when rolling up or releasing the thermal insulation blanket.

[0011] Preferably, the trigger anti-overrolling component includes a limiting bracket and a limiting sensor. The limiting bracket includes a fixed rod and a mounting rod. One end of the fixed rod is fixedly installed on the top of the greenhouse. The mounting rod is height-adjustable on the fixed rod by fasteners to adjust the height of the mounting rod according to the thickness of the insulation blanket. The limiting sensor is fixed on the mounting rod and electrically connected to the control component to trigger a stop signal when the limiting sensor contacts the insulation blanket, thereby stopping the curtain from rolling up through the control component.

[0012] Preferably, the limit sensor is further provided with an elastic contact to buffer contact impact and expand the detection range.

[0013] Preferably, the roller shutter device further includes a mechanical anti-over-rolling component, which includes an arc-shaped guide rail and a limiting screw. The arc-shaped guide rail is fixedly installed at the hinge of the swing arm and the support rod. The arc-shaped guide rail is provided with multiple threaded holes. The limiting screw is detachably installed in the threaded holes of the arc-shaped guide rail to limit the maximum rotation angle of the swing arm by the position of the limiting screw.

[0014] Preferably, the roller blind device further includes a transmission anti-over-rolling component, one end of which is connected to the reduction component and the other end of which is connected to the roller blind rod, so as to disconnect the power input of the roller blind rod when the transmission torque exceeds a set threshold.

[0015] In the aforementioned greenhouse with anti-over-rolling and blanket-falling function, firstly, a trigger-based anti-over-rolling component is installed on the top of the greenhouse. This component is electrically connected to the control component in the rolling shutter device. When the insulation blanket comes into contact with the trigger-based anti-over-rolling component, a stop signal is triggered, stopping the rolling shutter through the control component, thus providing the first layer of over-rolling protection for the insulation blanket. Secondly, a mechanical anti-over-rolling component is installed on the support mechanism of the rolling shutter device. This component uses mechanical limiting to prevent the insulation blanket from falling due to over-rolling or self-locking failure, thus providing the second layer of over-rolling protection. Finally, a transmission anti-over-rolling component is also installed in the rolling shutter device. This component disconnects the power input when the transmission torque exceeds a set threshold, preventing damage to the insulation blanket due to excessive rolling force or over-rolling, thus providing the third layer of over-rolling protection. In this way, not only are losses caused by over-rolling or self-locking failure of the rolling shutter effectively avoided, but the sequential implementation of three different protective measures also ensures the redundancy and reliability of the system, effectively preventing the failure of a single anti-over-rolling measure. Attached Figure Description

[0016] Figure 1 This is a structural diagram of a greenhouse with a function to prevent the blankets from rolling off.

[0017] Figure 2 This is a schematic diagram of the roller shutter device.

[0018] Figure 3 This is a schematic diagram of the mechanical anti-overwinding assembly.

[0019] Figure 4 This is a schematic diagram of the structure for triggering the over-roll protection component.

[0020] The diagram shows: a greenhouse 10 with anti-over-rolling and over-rolling function, a rolling shutter device 11, a rolling shutter mechanism 111, a drive motor 1111, a reduction gear assembly 1112, a rolling shutter rod 1113, a support mechanism 112, a support rod 1121, a swing arm 1122, a control assembly 113, a mechanical anti-over-rolling assembly 114, an arc-shaped guide rail 1141, a limit screw 1142, a transmission anti-over-rolling assembly 116, a trigger anti-over-rolling assembly 12, a limit bracket 121, a fixing rod 1211, an installation rod 1212, a limit sensor 122, an elastic contact 1221, an insulation blanket 13, and the greenhouse body 14. Detailed Implementation

[0021] To more clearly illustrate the technical solutions of the embodiments of this utility model, the drawings used in the embodiments 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.

[0022] Please refer to Figures 1 to 4A greenhouse with a function to prevent over-rolling and falling of the curtain includes a greenhouse body 14, a trigger anti-over-rolling component 12, and a curtain device 10 fixedly installed in front of the greenhouse.

[0023] The roller blind device 10 includes a roller blind mechanism 11, a support mechanism 112, and a control component 113. One end of the support mechanism 112 is rotatably mounted on the support surface, and the other end is fixedly connected to the roller blind mechanism 11 to support the roller blind mechanism 11. The control component 113 is fixedly mounted on the support mechanism 112 and electrically connected to the roller blind mechanism 11 to control the roller blind mechanism 11 to roll up or release the thermal insulation blanket 13.

[0024] The trigger anti-over-rolling component 12 is fixedly installed on the top of the greenhouse and electrically connected to the control component 113 so that when the insulation blanket 13 comes into contact with the trigger anti-over-rolling component 12, a stop signal is triggered, and the control component 113 stops the curtain from over-rolling to prevent the curtain mechanism 11 from over-rolling.

[0025] In this embodiment, the anti-over-rolling trigger assembly 12 is fixedly installed on the top of the greenhouse. When the insulation blanket 13 is rolled up to near the top, the insulation blanket 13 will contact the anti-over-rolling trigger assembly 12, which will send a stop signal. The control assembly 113 receives the stop signal and controls the curtain rolling mechanism 11 to stop rolling. This effectively avoids problems such as the insulation blanket 13 falling off, tearing, or the curtain rolling mechanism 11 being damaged due to over-rolling. The control assembly 113 uses a Siemens S7-1200 PLC controller. When the sensor signal is triggered, the PLC immediately outputs a relay signal to cut off the power to the curtain rolling motor and simultaneously activates the electromagnetic brake to ensure that the curtain rolling mechanism 11 stops completely within 0.5 seconds.

[0026] In another embodiment, multiple trigger-activated anti-over-rolling components 12 can be spaced apart on the top of the greenhouse to completely cover the width of the insulation blanket 13, avoiding over-rolling problems caused by the insulation blanket 13 failing to trigger a stop signal in certain areas. The setting of multiple trigger-activated anti-over-rolling components 12 ensures that, during the rolling process, regardless of which part of the insulation blanket 13 contacts the component first, a stop signal can be triggered immediately, greatly improving the reliability and safety of the system.

[0027] Furthermore, the roller blind mechanism 11 includes a drive motor 1111, a reduction assembly 1112, and a roller blind rod 1113. The drive motor 1111 is connected to the reduction assembly 1112, and the reduction assembly 1112 is connected to the roller blind rod 1113, so that the drive motor 1111 drives the roller blind rod 1113 to roll up or release the thermal insulation blanket 13.

[0028] In this embodiment, the drive motor 1111 is a three-phase asynchronous motor, which has the advantages of simple structure, reliable operation, and convenient maintenance. It is connected to the roller shutter rod 1113 via the reduction gear assembly 1112, achieving smooth power transmission and reasonable speed adjustment. The reduction gear assembly 1112 uses a worm gear reducer, which has a large reduction ratio and self-locking function, effectively preventing the roller shutter mechanism 11 from falling on its own in the event of a power outage or malfunction, further improving the system's safety.

[0029] Furthermore, the support mechanism 112 includes a support rod 1121 and a swing arm 1122. One end of the support rod 1121 is rotatably mounted on the support surface, and the other end is rotatably connected to the swing arm 1122. One end of the swing arm 1122 is fixedly connected to the deceleration assembly 1112, and the other end is rotatably connected to the support rod 1121, so as to support the roller blind mechanism 11 and resist the torque generated when rolling up or releasing the thermal insulation blanket 13.

[0030] In this embodiment, the support rod 1121 is made of high-strength steel, which has sufficient rigidity and stability to support the weight of the entire roller blind mechanism 11 and the torque generated when rolling up or releasing the insulation blanket 13. The swing arm 1122 is also made of high-strength steel and is precision machined to ensure that its rotation is flexible and stable, effectively improving the operating efficiency and reliability of the roller blind mechanism 11.

[0031] Furthermore, the trigger anti-rollover assembly 12 includes a limiting bracket 121 and a limiting sensor 122. The limiting bracket 121 includes a fixing rod 1211 and an mounting rod 1212. One end of the fixing rod 1211 is fixedly installed on the top of the greenhouse. The mounting rod 1212 is height-adjustable on the fixing rod 1211 by fasteners, so as to adjust the height of the mounting rod 1212 according to the thickness of the insulation blanket 13. The limiting sensor 122 is fixed on the mounting rod 1212 and electrically connected to the control assembly 113, so as to trigger a stop signal when the limiting sensor 122 contacts the insulation blanket 13, and stop the curtain from rolling up through the control assembly 113.

[0032] In this embodiment, the mounting bracket for triggering the anti-over-winding component 12 is designed as an adjustable structure, which is fastened to the steel beam of the greenhouse by bolts. The installation height can be continuously adjusted within the range of 0.3-0.8 meters to accommodate insulation blankets 13 of different thicknesses and roll diameters. The limit sensor 122 is a contact sensor, which triggers a stop signal by directly contacting the insulation blanket 13.

[0033] In another embodiment, the trigger anti-over-rolling assembly 12 employs an infrared sensor. The infrared sensor detects the position of the insulation blanket 13 by emitting infrared light and receiving reflected signals. Once the insulation blanket 13 blocks the infrared light, the sensor immediately sends a stop signal. Both of these sensors have high sensitivity and reliability, ensuring that the curtain stops rolling immediately when the insulation blanket 13 comes into contact with the trigger anti-over-rolling assembly 12.

[0034] Furthermore, the limit sensor 122 is also provided with an elastic contact 1221 to buffer contact impact and expand the detection range.

[0035] In this embodiment, the elastic contact 1221 is a spring, one end of which is fixed to the contact sensor, and the other end extends toward the insulation blanket 13. When the insulation blanket 13 contacts the elastic contact 1221, the spring deforms, thereby buffering the impact force during contact and preventing the limit sensor 122 from being damaged by direct impact. At the same time, the deformation of the spring can also increase the contact area of ​​the elastic contact 1221, thereby improving the detection range and ensuring that the insulation blanket 13 can reliably trigger the stop signal when it contacts the trigger anti-over-winding assembly 12.

[0036] Furthermore, the roller shutter device 10 also includes a mechanical anti-over-rolling assembly 114, which includes an arc-shaped guide rail 1141 and a limiting screw 1142. The arc-shaped guide rail 1141 is fixedly installed at the hinge between the swing arm 1122 and the support rod 1121. The arc-shaped guide rail 1141 is provided with multiple threaded holes. The limiting screw 1142 is detachably installed in the threaded holes of the arc-shaped guide rail 1141 to limit the maximum rotation angle of the swing arm 1122 by the position of the limiting screw 1142.

[0037] In this embodiment, the mechanical anti-over-rolling component 114 is designed with the safety of the roller blind mechanism 11 under extreme conditions in mind. An arc-shaped guide rail 1141 is installed at the hinge between the swing arm 1122 and the support rod 1121. Its shape matches the rotation trajectory of the swing arm 1122, ensuring the stability and reliability of the limiting screw 1142 in limiting the rotation angle of the swing arm 1122. The limiting screw 1142 is threaded onto the arc-shaped guide rail 1141, and its position can be adjusted according to actual needs, thereby precisely controlling the maximum rotation angle of the swing arm 1122 and preventing damage to the roller blind mechanism 11 due to over-rolling. During the roller blind rolling process, once the swing arm 1122 rotates to the preset maximum angle, the limiting screw 1142 will prevent it from continuing to rotate, effectively preventing the insulation blanket 13 from falling off due to over-rolling. This mechanical protection measure does not rely on electricity or electronic signals, therefore it can still provide reliable over-rolling protection in the event of power failure or electronic control system malfunction.

[0038] In another embodiment, the cooperation of the arc-shaped guide rail 1141 and the limiting screw 1142 only mechanically prevents the insulation blanket 13 from falling from the ceiling, but the drive motor 1111 does not stop. To solve this problem, it is necessary to add a sensor or trigger switch (e.g., a limit switch) near the limiting screw 1142 and electrically connect it to the control component 113 so that after the swing arm 1122 contacts the limiting screw 1142, the control component 113 stops the drive motor 1111. Meanwhile, the arc-shaped guide rail 1141 can also be other mechanisms or shapes, such as a spring limiter, whose function is to limit the rotation angle of the swing arm 1122 within the range set by the operator.

[0039] Furthermore, the roller blind device 10 also includes a transmission anti-over-rolling assembly 116, one end of which is connected to the deceleration assembly 1112 and the other end is connected to the roller blind rod 1113, so as to disconnect the power input of the roller blind rod 1113 when the transmission torque exceeds a set threshold.

[0040] In this embodiment, the transmission anti-over-winding component 116 is mainly used to prevent the insulation blanket 13 from being damaged due to excessive traction caused by the transmission torque exceeding a set threshold. One end of it is connected to the reduction assembly 1112, and the other end is connected to the roller shutter rod 1113. When the traction force on the insulation blanket 13 is too large, such as when it over-winds, the transmission anti-over-winding component 116 is triggered. The drive motor 1111 continues to drive the reduction assembly 1112 to rotate, but the transmission between the roller shutter rod 1113 and the reduction assembly 1112 is disconnected by the transmission anti-over-winding component 116, and the roller shutter rod 1113 stops rotating. This not only effectively prevents the insulation blanket 13 from being damaged due to excessive traction, but also prevents the insulation blanket 13 from falling from the ceiling due to over-winding of the roller shutter machine. The torque limiting component can be a friction plate type or a steel ball type torque limiter.

[0041] In this invention, the drive motor 1111 drives the roller shutter rod 1113 to roll up the insulation blanket 13 via the reduction assembly 1112. If the insulation blanket 13 is subjected to excessive traction, such as over-rolling, the transmission anti-over-rolling assembly 116 is triggered. The drive motor 1111 continues to drive the reduction assembly 1112 to rotate, but the transmission between the roller shutter rod 1113 and the reduction assembly 1112 is disconnected by the transmission anti-over-rolling assembly 116, and the roller shutter rod 1113 stops rotating, thus stopping the roller shutter. If the transmission anti-over-rolling assembly 116 fails to trigger due to some factors, the roller shutter stops rolling. The insulation blanket 13 rolled up by the curtain rod 1113 will contact the limit sensor 122 at the top of the greenhouse. The limit sensor 122 then transmits a signal to the control component 113, which controls the drive motor 1111 to stop rotating, and the curtain rolling device 10 stops rolling. If neither of the above two anti-over-rolling measures is triggered, the curtain rolling mechanism 11 continues to roll, and the swing arm 1122 continues to rotate until the swing arm 1122 is blocked by the limit screw 1142 on the arc-shaped guide rail 1141, preventing the curtain rolling machine from over-rolling and causing the insulation blanket 13 to fall from the greenhouse roof. This not only effectively avoids losses caused by over-rolling or self-locking failure of the curtain rolling machine, but also provides three different protective measures in sequence, effectively preventing the problem of a single anti-over-rolling measure failing.

[0042] The components or units in the device of this utility model embodiment can be combined, divided, and deleted according to actual needs. The above-disclosed embodiments are merely preferred embodiments of this utility model and should not be construed as limiting the scope of this utility model. Those skilled in the art can understand that implementing all or part of the processes of the above embodiments and making equivalent changes according to the claims of this utility model still fall within the scope of this utility model.

Claims

1. A greenhouse with a function to prevent the blankets from rolling off, characterized in that: It includes the greenhouse body, the trigger anti-over-rolling component, and the roller shutter device fixedly installed in front of the greenhouse; The roller blind device includes a roller blind mechanism, a support mechanism, and a control component. One end of the support mechanism is rotatably mounted on a support surface, and the other end is fixedly connected to the roller blind mechanism to support the roller blind mechanism. The control component is fixedly mounted on the support mechanism and electrically connected to the roller blind mechanism to control the roller blind mechanism to roll up or release the thermal insulation blanket. The trigger anti-over-rolling component is fixedly installed on the top of the greenhouse and electrically connected to the control component. When the insulation blanket comes into contact with the trigger anti-over-rolling component, a stop signal is triggered, and the control component stops the curtain from rolling up, so as to prevent the curtain mechanism from over-rolling.

2. The greenhouse with anti-overrolling and anti-falling function as described in claim 1, characterized in that: The roller blind mechanism includes a drive motor, a reduction gear assembly, and a roller blind rod. The drive motor is connected to the reduction gear assembly, and the reduction gear assembly is connected to the roller blind rod, so that the drive motor drives the roller blind rod to roll up or release the thermal insulation blanket.

3. The greenhouse with anti-overrolling and anti-falling function according to claim 2, characterized in that: The support mechanism includes a support rod and a swing arm. One end of the support rod is rotatably mounted on the support surface, and the other end is rotatably connected to the swing arm. One end of the swing arm is fixedly connected to the deceleration assembly, and the other end is rotatably connected to the support rod, so as to support the roller blind mechanism and resist the torque generated when rolling up or releasing the thermal insulation blanket.

4. The greenhouse with anti-overrolling and anti-falling function as described in claim 1, characterized in that: The trigger anti-rollover assembly includes a limit bracket and a limit sensor. The limit bracket includes a fixed rod and an installation rod. One end of the fixed rod is fixedly installed on the top of the greenhouse. The installation rod is height-adjustable on the fixed rod by fasteners so that the height of the installation rod can be adjusted according to the thickness of the insulation blanket. The limit sensor is fixed on the installation rod and electrically connected to the control component so that a stop signal is triggered when the limit sensor contacts the insulation blanket, thereby stopping the curtain from rolling up through the control component.

5. The greenhouse with anti-overrolling and anti-falling function according to claim 4, characterized in that: The limit sensor is also equipped with an elastic contact to buffer contact impact and expand the detection range.

6. The greenhouse with anti-overrolling and anti-falling function according to claim 3, characterized in that: The roller shutter device also includes a mechanical anti-over-rolling component, which includes an arc-shaped guide rail and a limiting screw. The arc-shaped guide rail is fixedly installed at the hinge of the swing arm and the support rod. The arc-shaped guide rail is provided with multiple threaded holes. The limiting screw is detachably installed in the threaded holes of the arc-shaped guide rail to limit the maximum rotation angle of the swing arm by the position of the limiting screw.

7. The greenhouse with anti-overrolling and anti-falling function according to claim 2, characterized in that: The roller blind device also includes a transmission anti-over-rolling component, one end of which is connected to the reduction component and the other end of which is connected to the roller blind rod, so as to disconnect the power input of the roller blind rod when the transmission torque exceeds a set threshold.

Images