Sunlight greenhouse heat preservation quilt anti-rolling device and control system

Abstract

The present invention relates to the technical field of agricultural greenhouse technology, and provides a sunshade greenhouse heat preservation quilt anti-rolling device and a control system, which are arranged on the framework of the sunshade greenhouse and include: a wire rope, which is arranged from top to bottom along the framework and is located above the heat preservation quilt, and the wire rope can form a restraint on the heat preservation quilt rolled up by the rolling machine; at least one limit switch, which is arranged at the lower end of the wire rope and fixed below the framework, the limit switch is connected to the lower end of the wire rope, and the limit switch can generate a trigger signal after being triggered by the wire rope when the heat preservation quilt is rolled up or unfolded; a controller, which is communicatively connected or electrically connected to the limit switch and is used for controlling the rolling machine to stop when receiving the trigger signal. By arranging a wire rope above the heat preservation quilt and fixing the lower end of the wire rope on the limit switch below the framework, the present invention enables the wire rope to form a restraint on the heat preservation quilt during the rolling-up or unfolding process, and to a certain extent, avoids the occurrence of the situation of the heat preservation quilt rolling over.

Description

Technical Field

[0001] The present invention relates to the technical field of agricultural greenhouse technology, and particularly relates to a device and a control system for preventing the rolling and turning of a thermal insulation quilt in a solar greenhouse. Background Art

[0002] Solar greenhouses are the mainstream industrial facilities in China's facility agriculture and are applied to industries such as flowers, fruits and vegetables, animal husbandry, and fishery. The thermal insulation materials on the front slope of a solar greenhouse generally adopt thermal insulation quilts or straw curtains, which are retracted after sunrise and lowered at sunset under the control of a quilt rolling machine.

[0003] As an important device for controlling the climate in a solar greenhouse, the automatic retracting equipment for the thermal insulation quilt still has some potential safety hazards. It is very easy for the thermal insulation quilt to roll and turn due to mistakes of the controller or the like. The maintenance is not only time-consuming and laborious, but also there is a potential hazard to personal safety. Summary of the Invention

[0004] The present invention provides a device and a control system for preventing the rolling and turning of a thermal insulation quilt in a solar greenhouse, so as to solve the defect that the thermal insulation quilt rolls and turns due to operation mistakes or controller out-of-control in the prior art, realize the safe, stable and reliable automatic operation of the thermal insulation quilt, and avoid the occurrence of the situation that the thermal insulation quilt rolls and turns.

[0005] The present invention first provides a device for preventing the rolling and turning of a thermal insulation quilt in a solar greenhouse, which is arranged on the framework of the solar greenhouse and includes:

[0006] A wire rope, which is arranged from top to bottom along the framework and is located above the thermal insulation quilt, and the wire rope can form a restraint on the thermal insulation quilt rolled up by the quilt rolling machine;

[0007] At least one limit switch, which is arranged at the lower end of the wire rope and fixed below the framework, the limit switch is connected to the lower end of the wire rope, and the limit switch can generate a trigger signal after being triggered by the wire rope when the thermal insulation quilt is rolled up or unfolded;

[0008] A controller, which is communicatively connected or electrically connected to the limit switch, and is used for controlling the quilt rolling machine to stop when receiving the trigger signal.

[0009] According to an embodiment provided by the present invention, the limit switch includes a first limit switch and a second limit switch; the first limit switch and the second limit switch are respectively connected to the lower end of the wire rope, and the included angles formed by the first limit switch and the second limit switch with the wire rope are a preset angle value.

[0010] According to an embodiment provided by the present invention, the first limit switch generates a first trigger signal after being triggered by the pull wire; the second limit switch generates a second trigger signal after being triggered by the pull wire, and the controller controls the winding machine to stop after receiving the first trigger signal, or the second trigger signal, or the first trigger signal and the second trigger signal.

[0011] According to an embodiment provided by the present invention, it also includes:

[0012] A guide wheel is arranged on one side of the limit switch and fixed below the frame, and is used for the end of the pull wire to pass around the guide wheel and connect with the limit switch.

[0013] According to an embodiment provided by the present invention, both ends of the pull wire are connected with fiber bands of preset length, the lower end of the pull wire is connected to the limit switch through the fiber band, and the upper end of the pull wire is connected to the skeleton through the fiber band.

[0014] According to an embodiment provided by the present invention, a conductive wire is pre-embedded in the fiber belt, and the conductive wire is electrically connected to the hard limit switch on the quilt winding machine. When the fiber belt is out of control due to the quilt winding machine and the limit switch and / or the controller fail, the fiber belt will be stretched to a preset length or broken, and the conductive wire arranged in the fiber belt can be disconnected to force the quilt winding machine to stop running.

[0015] According to an embodiment provided by the present invention, it also includes a circuit switch, which is arranged at the top of the skeleton and is electrically connected to the quilt rolling machine, and is used to cut off the circuit of the quilt rolling machine after being triggered by the heat preservation.

[0016] The present invention also provides a solar greenhouse heat preservation blanket anti-rolling device, which is arranged on the frame of the solar greenhouse and comprises:

[0017] A pull wire is arranged from top to bottom along the frame, located above the thermal insulation quilt, and has two ends connected to the frame, and the pull wire can restrain the thermal insulation quilt rolled up by the quilt rolling machine;

[0018] at least one fiber band, one end of which is connected to the end of the pull wire and the other end is fixed to the frame;

[0019] Among them, a wire is pre-embedded in the fiber belt, and the wire is electrically connected to the hard limit switch on the quilt winding machine. When the fiber belt is stretched to a preset length or broken due to the quilt winding machine losing control, the wire arranged in the fiber belt is disconnected to force the quilt winding machine to stop running.

[0020] The present invention further provides a solar greenhouse insulation blanket anti-rolling control system, comprising the solar greenhouse insulation blanket anti-rolling device described in the above embodiment; the controller comprises:

[0021] The record update module is used to record and update the time when the limit switch is triggered each time, so as to generate the completion time of the current insulation blanket being rolled up or unfolded in combination with the start time of the blanket rolling machine;

[0022] A safety time generation module, used for iteratively generating a safety time for the next time the insulation is rolled up or unfolded according to the completion time of the current insulation being rolled up or unfolded;

[0023] The duration judgment module is used to judge whether the current time for the insulation to be rolled up or unfolded exceeds the safety time, and if it exceeds the safety time, a signal is sent to stop the insulation from being rolled up or unfolded.

[0024] According to an embodiment provided by the present invention, the controller further includes: a signal judgment module, used to judge whether trigger signals from at least two limit switches are received within a preset time period, and if not, to issue a limit switch damage alarm signal.

[0025] The above one or more technical solutions in the embodiments of the present invention have at least one of the following technical effects:

[0026] The solar greenhouse insulation blanket anti-rolling device provided by the present application is provided with a pull wire above the insulation blanket, and the lower end of the pull wire is fixed to the limit switch below the frame, so that the pull wire forms a constraint on the insulation blanket during the rolling or unfolding process, thereby preventing the insulation blanket from rolling over on the first level. Then, the limit switch is connected to the controller, and a pulling force is applied to the pull wire after the insulation blanket is rolled up or unfolded. The pull wire triggers the limit switch provided below to generate a trigger signal. After receiving the trigger signal, the controller controls the blanket winding machine to stop, thereby further preventing the insulation blanket from rolling over.

[0027] Furthermore, the present application provides a device for preventing the thermal insulation quilt from rolling over in a solar greenhouse. A fiber band can be provided at at least one end of the wire on the thermal insulation quilt, and a pull wire and the end of the fiber band connected thereto are fixed to a frame, so that the thermal insulation quilt can be rolled up or unfolded to form a constraint. In addition, a wire connected to the hard limit switch of the quilt rolling machine is pre-embedded in the fiber band. When the quilt rolling machine loses control and drives the thermal insulation quilt to be continuously rolled up or down, the fiber band will be stretched or broken, so that the wire inside it will be broken. When the wire is broken, it will trigger the hard limit switch on the quilt rolling machine to work, so that the quilt rolling machine is forced to stop, so as to ultimately ensure that the thermal insulation quilt will not be rolled over.

[0028] Furthermore, the anti-rolling control system for the daylight greenhouse heat preservation quilt provided by the present application generates the safe duration for the current rolling or unfolding of the heat preservation quilt through the safe duration generation module according to the duration used for the last rolling or unfolding of the heat preservation quilt recorded, and during the current rolling or unfolding process of the heat preservation quilt, the judgment module compares the used duration with the safe duration in real time. If the rolling or unfolding duration of the heat preservation quilt exceeds the safe duration, the quilt rolling machine will be forced to stop to avoid the situation of the heat preservation quilt being rolled over. Brief Description of the Drawings

[0029] In order to more clearly illustrate the technical solutions in the present invention or the prior art, the following will briefly introduce the drawings required for use in the description of the embodiments or the prior art. Obviously, the drawings in the following description are some embodiments of the present invention. For those of ordinary skill in the art, other drawings can be obtained based on these drawings without creative efforts.

[0030] Figure 1 Figure 1 is one of the structural schematic diagrams of the heat preservation quilt rolling of the anti-rolling device for the daylight greenhouse heat preservation quilt provided by the present invention;

[0031] Figure 2 Figure 2 is one of the structural schematic diagrams of the heat preservation quilt unfolding of the anti-rolling device for the daylight greenhouse heat preservation quilt provided by the present invention;

[0032] Figure 3 Figure 3 is the structural schematic diagram of the A-A section of the anti-rolling device for the daylight greenhouse heat preservation quilt provided by the present invention;

[0033] Figure 4 Figure 4 is one of the structural schematic diagrams of the heat preservation quilt rolling of the anti-rolling device for the daylight greenhouse heat preservation quilt provided by the present invention;

[0034] Figure 5 Figure 5 is one of the structural schematic diagrams of the heat preservation quilt unfolding of the anti-rolling device for the daylight greenhouse heat preservation quilt provided by the present invention;

[0035] Figure 6 Figure 6 is the structural schematic diagram of the fiber belt provided by the present invention;

[0036] Figure 7 Figure 7 is the structural schematic diagram of the anti-rolling control system for the daylight greenhouse heat preservation quilt provided by the present invention.

[0037] Reference Signs:

[0038] 100, guy wire; 101, fiber belt; 1011, conducting wire;

[0039] 200, limit switch; 201, first limit switch; 202, second limit switch;

[0040] 300. Controller; 301. Recording and updating module; 302. Safe duration generation module; 303. Judgment module;

[0041] 400. Heat preservation quilt;

[0042] 500. Guide wheel;

[0043] 600. Circuit switch. Detailed implementation manners

[0044] The following further describes in detail the implementation manners of the present application in conjunction with the accompanying drawings and embodiments. The following embodiments are used to illustrate the present application, but cannot be used to limit the scope of the present application.

[0045] In the description of the embodiments of the present application, it should be noted that the orientation or positional relationship indicated by the terms "center", "longitudinal", "transverse", "up", "down", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc. is based on the orientation or positional relationship shown in the accompanying drawings, and is only for the convenience of describing the embodiments of the present application and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the embodiments of the present application. In addition, the terms "first", "second", and "third" are only used for descriptive purposes and cannot be understood as indicating or implying relative importance.

[0046] In the description of the embodiments of the present application, it should be noted that unless otherwise clearly specified and limited, the terms "connected" and "connected" should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be directly connected or indirectly connected through an intermediate medium. For those of ordinary skill in the art, the specific meanings of the above terms in the embodiments of the present application can be understood according to specific situations.

[0047] In the embodiments of the present application, unless otherwise clearly specified and limited, the first feature being "on" or "under" the second feature can be that the first and second features are in direct contact, or the first and second features are indirectly in contact through an intermediate medium. Moreover, the first feature being "above", "over" and "on" the second feature can be that the first feature is directly above or obliquely above the second feature, or merely indicates that the first feature has a higher horizontal height than the second feature. The first feature being "under", "below" and "beneath" the second feature can be that the first feature is directly below or obliquely below the second feature, or merely indicates that the first feature has a lower horizontal height than the second feature.

[0048] In the description of this specification, the description referring to terms such as "one embodiment", "some embodiments", "example", "specific example", or "some examples" means that the specific features, structures, materials, or characteristics described in connection with the embodiment or example are included in at least one embodiment or example of the embodiments of this application. In this specification, the schematic expressions of the above terms do not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials, or characteristics described can be combined in a suitable manner in any one or more embodiments or examples. In addition, without contradiction, those skilled in the art can combine and combine the different embodiments or examples described in this specification and the features of different embodiments or examples.

[0049] This exemplary embodiment first provides an anti-rolling device for a solar greenhouse thermal insulation quilt, which is arranged on the framework of the solar greenhouse and is used to prevent the thermal insulation quilt 400 from rolling over during the rolling-up process. As Figure 1 shown, the anti-rolling device includes: a wire rope 100, at least one limit switch 200, and a controller 300.

[0050] The wire rope 100 is arranged from top to bottom along the framework and is located above the thermal insulation quilt 400. The wire rope 100 can form a restraint on the thermal insulation quilt 400 rolled up by the rolling machine; at least one limit switch 200 is arranged at the lower end position of the wire rope 100 and is fixed below the framework. The limit switch 200 is connected to the lower end of the wire rope 100. The limit switch 200 can generate a trigger signal after being triggered by the wire rope 100 when the thermal insulation quilt 400 is rolled up or unfolded; the controller 300 is communicatively connected or electrically connected to the limit switch 200 and is used to control the rolling machine to stop when receiving the trigger signal. Specifically, the greenhouse framework generally includes arch bars, columns, and pressing bars made of steel or reinforced concrete. One end of the thermal insulation quilt 400 can be fixed to the top of the greenhouse framework or the topmost part of the greenhouse, without limitation here. The other end of the thermal insulation quilt 400 can be fixed to a rotating shaft, and one end or both ends of the rotating shaft are connected to the rolling machine. The rolling machine can drive the rotating shaft to rotate, thereby driving the thermal insulation quilt 400 to roll up or unfold. However, during the rolling-up process of the thermal insulation quilt 400, the rolling machine operated manually or fully automated is prone to errors, and there is a problem that the thermal insulation quilt 400 is easily rolled over.

[0051] In this example, a guy wire 100 is arranged above the heat-insulating quilt 400, and the guy wire 100 can be arranged from top to bottom along the arch rod of the heat-insulating greenhouse skeleton. The upper end of the guy wire 100 can be fixedly connected to the skeleton, and the lower end can bypass the heat-insulating greenhouse skeleton and enter the heat-insulating greenhouse, and is connected to a limit switch 200 arranged below the skeleton. It can be further understood that the arrangement of the guy wire 100 restrains the heat-insulating quilt 400 of the part that needs to be rolled up or unfolded, forming a prerequisite for preventing the heat-insulating quilt 400 from being rolled over. It should be noted that in order to avoid the guy wire 100 causing too much pressure on the rolling of the heat-insulating quilt 400, the guy wire 100 is provided with a redundant length, and the specific size of the redundant length can be set according to the actual diameter of the rolled-up heat-insulating quilt 400, and no specific limitation is made here.

[0052] Taking the rolling-up process of the heat-insulating quilt 400 as an example for illustration, when the heat-insulating quilt 400 is rolled to a predetermined position, if it is continued to be rolled up further, it will be caught by the guy wire 100. However, at this time, the continuously rolled-up heat-insulating quilt 400 will generate a force on the guy wire 100, and the guy wire 100 will trigger the limit switch 200 arranged below under the action of the force. The limit switch 200 will send a trigger signal to the controller 300 to control the quilt rolling machine to stop through the controller 300, further avoiding the situation that the heat-insulating quilt 400 is easily rolled over when it is continued to be rolled up.

[0053] In this embodiment, by arranging the guy wire 100 above the heat-insulating quilt 400 and fixing the lower end of the guy wire 100 on the limit switch 200 below the skeleton, the guy wire 100 forms a restraint on the heat-insulating quilt 400 during the rolling-up or unfolding process, avoiding the situation that the heat-insulating quilt 400 is rolled over at the first level. Then, the limit switch 200 is connected to the controller 300, and a pulling force is given to the guy wire 100 after the heat-insulating quilt 400 is rolled up or unfolded. The corresponding limit switch 200 is triggered by the guy wire 100 to generate a trigger signal, and the controller 300 controls the quilt rolling machine to stop after receiving the trigger signal, further avoiding the situation that the heat-insulating quilt 400 is rolled over.

[0054] Next, reference will be made to Figures 1 to 6 to describe each part structure of the above-mentioned anti-rollover device for the heat-insulating quilt of the solar greenhouse in the implementation manner of this example in more detail.

[0055] As Figure 3 shown, in one embodiment, the limit switch 200 includes a first limit switch 201 and a second limit switch 202; the first limit switch 201 and the second limit switch 202 are respectively connected to the lower end of the guy wire 100, and the included angle formed by the connection of the first limit switch 201 and the second limit switch 202 with the guy wire 100 is a preset angle value.

[0056] It should be understood that when the heat preservation quilt 400 is rolled up to a predetermined position and continues to be rolled up, due to the force exerted by the heat preservation quilt 400 on the pull wire 100, the limit switch 200 will be triggered to generate a trigger signal. After receiving the trigger signal, the controller 300 controls the quilt rolling machine to stop and records the time when the heat preservation quilt 400 is rolled up.

[0057] After the heat preservation quilt 400 stops, the pull wire 100 will continuously apply a pulling force to the limit switch 200, and the limit switch 200 is always in an operating state, and its service life is easily affected. Therefore, in this embodiment, two limit switches 200 are provided. The first limit switch 201 and the second limit switch 202 are connected to the end of the pull wire 100 through connecting wires. The angle between the two connecting wires can be set between 90° and 170°, specifically 150°. A larger angle can easily pull the first limit switch 201 and the second limit switch 202 through the force movement of the pull wire 100 to emit a trigger signal. Since two limit switches 200 are provided, after one limit switch 200 is damaged, the other can still emit a trigger signal to stop the quilt rolling machine, avoiding the situation where the heat preservation quilt 400 is rolled over due to the failure of the limit switch 200. It should be noted that the process of the pull wire 100 triggering the first limit switch 201 or the second limit switch 202 can be that after the force on the pull wire 100 exceeds the threshold, the two contact pieces arranged in the limit switch 200 will contact and communicate, thereby generating a trigger signal. The principle of the specific limit switch 200 can be understood by referring to the rope limit switch 200 and will not be elaborated here.

[0058] In one embodiment, after the first limit switch 201 is triggered by the pull wire 100, a first trigger signal is generated; after the second limit switch 202 is triggered by the pull wire 100, a second trigger signal is generated. The controller 300 controls the quilt rolling machine to stop after receiving the first trigger signal, or the second trigger signal, or the first trigger signal and the second trigger signal.

[0059] In the actual application process, the controller 300 needs to receive the first trigger signal and the second trigger signal simultaneously within a certain time period before controlling the quilt rolling machine to stop. However, if one of the limit switches 200 is damaged and the controller 300 does not receive the second trigger signal within a certain time period, it is determined that the limit switch 200 that fails to emit the trigger signal is damaged, and an alarm signal for the damage of the limit switch 200 will be sent in time, so as to facilitate the staff to accurately and efficiently replace the damaged limit switch 200. And the controller 300 controls the quilt rolling machine to stop according to the received trigger signal, which can prevent the heat preservation quilt 400 from being rolled over to a certain extent.

[0060] Such as Figure 1 、 2As shown, in one embodiment, the anti-rolling device also includes: a guide wheel 500, which is arranged on one side of the limit switch 200 and fixed under the frame, and is used for the end of the pull wire 100 to bypass the guide wheel 500 and connect with the limit switch 200.

[0061] Specifically, in order to reduce the friction force of the cable 100 wound around the frame, a guide wheel 500 is provided below the frame and on the side of the limit switch 200, and the end of the cable 100 can pass around the guide wheel 500 and connect to the limit switch 200. This is used to ensure that the pulling force of the cable 100 by the insulation blanket 400 is the same as the force transmitted to the limit switch 200, which can not only improve the accuracy of the limit switch 200, but also further provide protection to prevent the insulation blanket 400 from rolling over.

[0062] In one embodiment, both ends of the pull wire 100 are connected with fiber bands 101 of preset length, the lower end of the pull wire 100 is connected to the limit switch 200 through the fiber band 101, and the upper end of the pull wire 100 is connected to the skeleton through the fiber band 101.

[0063] It should be understood that a fiber band 101 can be provided at both ends of the pull line 100. The fiber band 101 is flat in shape and can reduce the pressure on the insulation blanket 400 when the insulation blanket 400 is rolled up or unfolded, thereby protecting the insulation blanket 400 from damage. The specific length of the fiber band 101 can be designed according to the diameter of the insulation blanket 400 when it is rolled up, and is not limited here.

[0064] like Figure 6 As shown, in one embodiment, a conductor 1011 is pre-buried in the fiber band 101, and the conductor 1011 is electrically connected to the hard limit switch on the quilt rolling machine. When the fiber band 101 is out of control due to the quilt rolling machine and the limit switch 200 and / or the controller 300 fail, the fiber band 101 will be stretched to a preset length or broken, and the conductor 1011 arranged in the fiber band 101 can be disconnected to force the quilt rolling machine to stop running.

[0065] Specifically, the wire 1011 embedded in the fiber belt 101 is U-shaped. On the one hand, it is to make the ends of the wire 1011 located on one side, facilitating the connection with the hard limit switch on the rolling machine. On the other hand, it is convenient for the wire 1011 to be broken during the process of the fiber belt 101 being broken or stretched. This setting is to prevent the rolling machine from not stopping after reaching the predetermined position, and when the limit switch 200 or the controller 300 fails, the rolling machine continuously rolls the heat preservation quilt 400 up or down, which is likely to cause the heat preservation quilt 400 to be rolled over or torn. When the rolling machine continuously rolls the heat preservation quilt 400 up or down, the fiber belts 101 at both ends of the pull wire 100 are prone to being stretched or broken due to their strength being less than that of the pull wire 100. At this time, the wire 1011 arranged in the fiber belt 101 is prone to being broken due to its poor elasticity. When the wire 1011 is broken, it will trigger the hard limit switch on the rolling machine to work, so that the rolling machine stops forcibly, ultimately ensuring that the heat preservation quilt 400 will not be rolled over.

[0066] In one example, the anti-rollover device further includes a circuit switch 600. The circuit switch 600 is arranged at the top of the framework and is electrically connected to the rolling machine, and is used to cut off the circuit of the rolling machine after being triggered by the heat preservation quilt 400.

[0067] It can be understood that the circuit switch 600 can be arranged at the top of the framework by a bracket. When the controller 300, the limit switch 200 and the hard limit switch of the rolling machine all fail and the heat preservation quilt 400 still rolls up, it will touch the circuit switch 600. At this time, the circuit switch 600 will cut off the power supply circuit of the rolling machine, thereby forcing the heat preservation quilt 400 to stop rolling up. This setting, as the last line of defense for the anti-rollover measure, effectively prevents the heat preservation quilt 400 from being rolled over. Specifically, it can be set as a foot switch. The material of the foot switch can be selected as flame-retardant engineering plastics, and a waterproof cover can be arranged above the foot switch, so that the foot switch has the characteristics of waterproof, moisture-proof, corrosion-resistant, high-temperature and cold-resistant, and can still work normally even under the weather conditions of severe cold and heat.

[0068] This exemplary embodiment also provides an anti-rollover device for the heat preservation quilt 400 of a solar greenhouse, which is arranged on the framework of the solar greenhouse and is used to prevent the heat preservation quilt 400 from being rolled over during the rolling process. As Figure 4 shown, it includes: a pull wire 100 and at least one fiber belt 101.

[0069] The pull wire 100 is arranged from top to bottom along the skeleton, located above the thermal insulation quilt 400, and both ends are connected to the skeleton. The pull wire 100 can restrain the thermal insulation quilt 400 rolled up by the quilt rolling machine; at least one fiber band 101, one end of which is connected to the end of the pull wire 100, and the other end is fixed to the skeleton; wherein a conductor 1011 is pre-embedded in the fiber band 101, and the conductor 1011 is electrically connected to the hard limit switch on the quilt rolling machine. When the fiber band 101 is stretched to a preset length or broken due to the loss of control of the quilt rolling machine, the conductor 1011 arranged in the fiber band 101 is disconnected to force the quilt rolling machine to stop running.

[0070] like Figure 4 , 5 As shown in , 6, specifically, the pull wire 100 can be arranged from top to bottom along the arch rod of the insulation room frame, and the two ends of the pull wire 100 can be connected to the fiber belt 101, and then fixed to the frame through the fiber belt 101, so as to form a constraint on the rolled or unfolded part of the insulation quilt 400 through the pull wire 100 and the fiber belt 101. When the insulation quilt winding machine loses control and drives the insulation quilt 400 to be continuously rolled up or down, the fiber belt 101 at both ends of the pull wire 100 is easy to be stretched or broken due to its lower strength than the pull wire 100. At this time, the wire 1011 set in the fiber belt 101 is easy to be broken due to its poor elasticity. When the wire 1011 is broken, it will trigger the hard limit switch on the insulation quilt winding machine to work, so that the insulation quilt winding machine is forced to stop, so as to finally ensure that the insulation quilt 400 will not be rolled over. This arrangement can achieve the effect of preventing the insulation quilt 400 from being rolled over even in the absence of a limit switch 200.

[0071] like Figure 6 As shown, in one example, the wire 1011 embedded in the fiber band 101 is U-shaped. Specifically, the design of the U-shaped wire 1011 is to make the end of the wire 1011 located on one side, which is convenient for connection with the hard limit switch on the quilt winding machine, and to facilitate the wire 1011 to be broken when the fiber band 101 is broken or stretched. In order to ensure that the wire 1011 is broken with the deformation of the fiber band 101, the U-shaped wire 1011 should be consistent with the length of the fiber band 101.

[0072] In one example, the strength of the pull wire 100 is greater than the strength of the fiber band 101, and the strength of the fiber band 101 is greater than the strength of the wire 1011. Specifically, the pull wire 100 can be made of a steel wire rope with higher strength. The fiber band 101 is less strong than the pull wire 100 and is arranged in a flat shape, which can reduce the pressure between the fiber band 101 and the insulation blanket 400 and protect the insulation blanket 400 from being damaged. To ensure that the wire 1011 can be broken when the fiber band 101 is deformed, the strength of the wire 1011 should be less than the strength of the fiber band 101.

[0073] In this embodiment, by arranging a fiber band 101 at least one end of the wire 1011 on the thermal insulation quilt 400, and by fixing the pull wire 100 and the end of the fiber band 101 connected thereto on the frame, the thermal insulation quilt 400 can be rolled up or unfolded to form a constraint. In addition, a wire 1011 connected to the hard limit switch of the quilt rolling machine is pre-embedded in the fiber band 101. When the quilt rolling machine loses control and drives the thermal insulation quilt 400 to be continuously rolled up or down, the fiber band 101 will be stretched or broken, so that the wire 1011 inside it will be broken. When the wire 1011 is broken, it will trigger the hard limit switch on the quilt rolling machine to work, so that the quilt rolling machine is forced to stop, so as to ultimately ensure that the thermal insulation quilt 400 will not be rolled over.

[0074] It should be understood that in this embodiment, a circuit switch 600 can also be set at the top of the frame through a bracket. When the hard limit switch of the quilt rolling machine fails and the thermal insulation quilt 400 is still rolled up, it will touch the circuit switch 600. At this time, the circuit switch 600 will cut off the power supply circuit of the quilt rolling machine, thereby forcing the thermal insulation quilt 400 to stop rolling up. This setting serves as the last line of defense for anti-rolling measures and effectively prevents the thermal insulation quilt 400 from rolling up.

[0075] This exemplary embodiment also provides a solar greenhouse insulation blanket 400 anti-rolling control system; including the solar greenhouse insulation blanket 400 anti-rolling device described in the above embodiment; Figure 7 As shown, the controller 300 includes: a record update module 301, a safety duration generation module 302 and a duration judgment module 303.

[0076] The record update module 301 is used to record and update the time when the limit switch 200 is triggered each time, so as to generate the completion time of the current insulation quilt 400 being rolled up or unfolded in combination with the start time of the quilt rolling machine; the safety time generation module 302 is used to iteratively generate the safety time for the next time the insulation quilt 400 is rolled up or unfolded according to the completion time of the current insulation quilt 400 being rolled up or unfolded; the time judgment module 303 is used to judge whether the current time for the insulation quilt 400 to be rolled up or unfolded exceeds the safety time, and if it exceeds the safety time, a signal is sent to stop the rolling or unfolding action of the insulation quilt 400.

[0077] Specifically, assuming that the time it takes for the thermal blanket 400 to be fully rolled up under manual intervention for the first time is t0, then the safe time for the next automatic rolling up is T1=t0+Δt. When the blanket is rolled up next time, the record update module 301 will record the time it takes for the automatic rolling up as t1. Then the safe time for the next automatic rolling up is iterated to T2=t1+Δt, and the record update module 301 will record and update the time it takes for the automatic rolling up as t2. By analogy, the safe time for the nth full rolling up is: T n =t (n-1) +Δt, where Tn is the safety duration for the nth automatic update, t n-1 is the duration taken for rolling up obtained when the heat preservation quilt 400 runs automatically for the (n - 1)th time.

[0078] Similarly, the safety duration for the heat preservation quilt 400 to be fully unfolded is: T n ' = t (n-1) ' + Δt, where T n ' is the safety duration for the nth automatic update, t (n-1) ' is the duration taken for unfolding obtained when the heat preservation quilt 400 runs automatically for the (n - 1)th time.

[0079] During the process of the heat preservation quilt 400 being rolled up or unfolded each time, the duration judgment module 303 will judge whether the duration of rolling up or unfolding exceeds the safety duration. If the heat preservation quilt 400 exceeds the set safety duration during automatic rolling up or unfolding, then the controller 300 will control the rolling machine to stop. This setting avoids the situation of the heat preservation quilt 400 being rolled over from the perspective of the safety duration required for the heat preservation quilt 400 to be rolled up or unfolded.

[0080] In an example, the safety duration is generated by adding 2 - 8 seconds to the completion duration of the previous rolling up or unfolding of the heat preservation quilt 400. Specifically, considering weather reasons, for example, it is difficult to roll up the heat preservation quilt 400 after it absorbs water when it rains. Therefore, the safety duration can be increased by 5 seconds or 8 seconds based on the previous rolling up duration, and it can be set according to the actual situation specifically, and there is no limitation here.

[0081] In an embodiment, the controller 300 further includes: a signal judgment module 303, which is used to judge whether trigger signals sent by two limit switches 200 are received within a preset duration. If not, an alarm signal indicating that the limit switch 200 is damaged is sent.

[0082] Specifically, in this embodiment, two limit switches 200 can be set at the end position of the pull wire 100, and after receiving the trigger signals sent by the two limit switches 200 within the preset duration, the rolling machine is controlled to stop. However, if one of the limit switches 200 is damaged and the controller 300 does not receive the second trigger signal within the preset duration, it is determined that the limit switch 200 that does not send the trigger signal is damaged, and an alarm signal indicating that the limit switch 200 is damaged will be sent in time, so as to facilitate the staff to accurately and efficiently replace the damaged limit switch 200, and the controller 300 controls the rolling machine to stop according to the received trigger signals, preventing the heat preservation quilt 400 from being rolled over to a certain extent.

[0083] In this embodiment, the safety duration generation module 302 generates the safety duration for the current rolling up or unfolding of the heat preservation quilt 400 according to the recorded duration of the previous rolling up or unfolding of the heat preservation quilt 400, and during the current rolling up or unfolding of the heat preservation quilt 400, the duration judgment module 303 compares the used duration with the safety duration in real time. If the rolling up or unfolding duration of the heat preservation quilt 400 exceeds the safety duration, the heat preservation package is forced to stop to avoid the situation of the heat preservation quilt 400 being rolled over.

[0084] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit them; although the present invention has been described in detail with reference to the foregoing embodiments, those of ordinary skill in the art should understand that they can still modify the technical solutions recorded in the foregoing embodiments, or perform equivalent replacements for some of the technical features; and these modifications or replacements do not make the essence of the corresponding technical solutions deviate from the spirit and scope of the technical solutions of the embodiments of the present invention.

Claims

1. An anti-rolling device for the heat-insulating quilt of a solar greenhouse, which is arranged on the framework of the solar greenhouse, and is characterized in that, include: A pull wire is arranged from top to bottom along the frame and is located above the thermal insulation quilt. The pull wire can bind the thermal insulation quilt rolled up by the quilt rolling machine. The lower end of the pull wire bypasses the frame and enters the solar greenhouse. At least one limit switch is arranged at the lower end of the pull wire and fixed in the solar greenhouse below the frame, the limit switch is connected to the lower end of the pull wire, and the limit switch can be triggered by the pull wire to generate a trigger signal after the insulation blanket is rolled up or unfolded; A controller, which is communicatively connected or electrically connected to the limit switch, and is used to control the winding machine to stop when receiving the trigger signal; Both ends of the pull wire are connected to fiber bands of preset lengths, the lower end of the pull wire is connected to the limit switch through the fiber band, and the upper end of the pull wire is connected to the frame through the fiber band; A wire is pre-buried in the fiber belt, and the wire is electrically connected to a hard limit switch on the quilt winding machine. When the fiber belt is out of control due to the quilt winding machine and the limit switch and / or the controller fails, the fiber belt will be stretched to a preset length or broken, and the wire arranged in the fiber belt can be disconnected to force the quilt winding machine to stop running; The controller comprises: The record update module is used to record and update the time when the limit switch is triggered each time, so as to generate the completion time of the current insulation blanket being rolled up or unfolded in combination with the start time of the blanket rolling machine; A safety time generation module, used for iteratively generating a safety time for the next time the insulation is rolled up or unfolded according to the completion time of the current insulation being rolled up or unfolded; A duration judgment module, used to judge whether the current time duration of the thermal insulation being rolled up or unfolded exceeds the safety time duration, and if it exceeds the safety time duration, a signal is sent to stop the thermal insulation being rolled up or unfolded; A circuit switch, which is arranged at the top of the frame and is electrically connected to the quilt rolling machine, and is used to cut off the circuit of the quilt rolling machine after being triggered by the heat preservation; A guide wheel is arranged on one side of the limit switch and fixed below the frame, and is used for the end of the pull wire to pass around the guide wheel and connect with the limit switch.

2. The anti-rolling device for the insulation quilt of the solar greenhouse according to claim 1, characterized in that, The limit switch includes a first limit switch and a second limit switch; the first limit switch and the second limit switch are respectively connected to the lower end of the pull wire, and the angle formed by the first limit switch and the second limit switch and the pull wire is a preset angle value.

3. The anti-rolling device for the thermal insulation quilt of the solar greenhouse according to claim 2, characterized in that, The first limit switch generates a first trigger signal after being triggered by the pull wire; the second limit switch generates a second trigger signal after being triggered by the pull wire, and the controller controls the winding machine to stop after receiving the first trigger signal, or the second trigger signal, or the first trigger signal and the second trigger signal.

4. The anti-rolling and turning device for the thermal insulation quilt of the solar greenhouse according to claim 3, characterized in that, The controller further comprises: a signal judging module, which is used to judge whether trigger signals sent by at least two limit switches are received within a preset time period, and if not, to send a limit switch damage alarm signal.

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