Limiting system for controlling roller shutter machine based on Internet of Things

Abstract

The invention discloses a limiting system for controlling a roller shutter machine based on the Internet of Things, and relates to the technical field of electric roller shutter machines. The system comprises a roller shutter machine rolling rod, a rotating shaft limiting shell, a synchronous belt mechanism, a roller shutter machine limiting piece, a limiting piece fixing device, a rotating shaft lead screw, an upper limiting microswitch, a lower limiting microswitch, an external upper limiting travel switch, a roller shutter machine forward and reverse rotation controller and an Internet of Things terminal. The upper limiting microswitch and the lower limiting microswitch are both arranged on the rotating shaft limiting shell, and the upper limiting microswitch is arranged at the end, away from the synchronous belt mechanism, of the rotating shaft limiting shell. The external upper limit travel switch is connected with the upper limit microswitch in series, the roller shutter machine forward and reverse rotation controller is respectively connected with the roller shutter machine rolling rod and the Internet of Things terminal, and the upper limit microswitch, the lower limit microswitch and the external upper limit travel switch are all connected with the Internet of Things terminal. The roller shutter machine limiter is safe, reliable, accurate in limiting, extremely low in failure rate and easy to widely popularize and apply.

Description

Technical Field

[0001] The present application relates to the technical field of electric roller shutter machines, and in particular to a position limiting system for controlling roller shutter machines based on the Internet of Things. Background Art

[0002] With the development of the facility agriculture industry, roller shutter machines have been widely used in the field of modern facility agriculture production. Most roller shutter machine gearboxes only have gear box transmission functions and lack operation limit control functions. In this case, daily roller shutter machine management is still mainly manual, which is easily affected by operator negligence, resulting in accidents such as over-winding and reverse-winding of the roller shutter machine.

[0003] At present, there are various types of limiters for rolling shutter machines, but there are various problems in actual application effects, such as inaccurate lower limiter, deviation and wear of electronic limiters due to long-term operation, and low reliability of limiters, which prevents them from being widely promoted and applied. Summary of the invention

[0004] The present application aims to solve at least one of the technical problems existing in the prior art. To this end, the present application proposes a limiter system for controlling a roller shutter machine based on the Internet of Things, which is safe and reliable, has precise limit, has a very low failure rate, and is easy to be widely promoted and applied.

[0005] The present application provides a limit system for controlling a roller shutter machine based on the Internet of Things, comprising: a roller shutter machine rolling rod, a rotating shaft limit housing, a synchronous belt mechanism, a roller shutter machine limit member, a limit member fixing device, a rotating shaft screw, an upper limit micro switch, a lower limit micro switch, an external upper limit travel switch, a roller shutter machine forward and reverse controller, and an Internet of Things terminal;

[0006] One end of the synchronous belt mechanism is fixedly connected to the rolling rod of the roller shutter machine, and the other end of the synchronous belt mechanism is fixedly connected to one end of the rotating shaft screw rod, the rotating shaft screw rod is penetrated through the rotating shaft limit housing, and rotating shaft bearings are respectively arranged at both ends of the rotating shaft screw rod, and the two rotating shaft bearings are respectively fixedly connected to the rotating shaft limit housing, and the two rotating shaft bearings are located on the same side of the synchronous belt mechanism, the upper limit micro switch and the lower limit micro switch are both arranged on the rotating shaft limit housing, and the upper limit micro switch and the lower limit micro switch are close to the rotating shaft screw rod. The upper limit micro switch is arranged on the end of the rotating shaft limit housing away from the synchronous belt mechanism, the lower limit micro switch is arranged near the middle position of the rotating shaft screw rod, the roller shutter machine limit piece is threadedly connected with the rotating shaft screw rod, and the roller shutter machine limit piece is arranged between the two rotating shaft bearings, the limit piece fixing device is fixedly arranged on the rotating shaft limit housing, and the two ends of the limit piece fixing device respectively correspond to the positions of the upper limit micro switch and the lower limit micro switch, and the roller shutter machine limit piece is clamped on the limit piece fixing device;

[0007] The external upper limit travel switch is connected in series with the upper limit microswitch, the roller shutter forward and reverse controller is respectively connected to the roller shutter machine rolling rod and the Internet of Things terminal, and the upper limit microswitch, the lower limit microswitch and the external upper limit travel switch are all connected to the Internet of Things terminal.

[0008] According to some embodiments of the present application, a plurality of slots are evenly arranged on the roller shutter machine limiter, a plurality of clips matching the slots are protruded from the limiter fixing device, and the limiter fixing device is clipped to the slots on the roller shutter machine limiter through the clips.

[0009] According to some embodiments of the present application, the synchronous belt mechanism includes a first synchronous gear, a second synchronous gear and a synchronous toothed chain, the first synchronous gear is fixedly sleeved on the rolling rod of the roller shutter machine, the second synchronous gear is fixedly sleeved on one end of the rotating shaft screw close to the first synchronous gear, and the first synchronous gear and the second synchronous gear are connected through the synchronous toothed chain.

[0010] According to some embodiments of the present application, the limiting system for controlling the roller shutter machine based on the Internet of Things also includes a flange, which is mounted on the rolling rod of the roller shutter machine, and the first synchronous gear is arranged close to the flange, and the diameter of the flange is larger than the diameter of the first synchronous gear.

[0011] According to some embodiments of the present application, the limiting system for controlling a roller shutter machine based on the Internet of Things also includes a roller shutter machine gearbox, the rotating shaft limiting housing is fixedly arranged at the front end of the roller shutter machine gearbox, and the output shaft of the roller shutter machine gearbox is fixedly connected to the roller shutter machine rolling rod through the flange.

[0012] According to some embodiments of the present application, the limiting system for controlling the roller shutter machine based on the Internet of Things further includes a connecting plate, and the rotating shaft limiting housing and the roller shutter machine gearbox are connected via the connecting plate.

[0013] According to some embodiments of the present application, the limiting system for controlling the roller shutter machine based on the Internet of Things also includes at least two first bolt fasteners, a first through hole corresponding to each of the first bolt fasteners is opened on the connecting plate, and a second through hole corresponding to each of the first bolt fasteners is opened on the rotating shaft limiting shell, and the first bolt fastener connects the connecting plate to the rotating shaft limiting shell through the corresponding first through hole and the second through hole.

[0014] According to some embodiments of the present application, the limiting system for controlling the roller shutter machine based on the Internet of Things also includes at least two second bolt fasteners, and the connecting plate is also provided with a third through hole corresponding to each of the second bolt fasteners, and the roller shutter machine gearbox is provided with a fourth through hole corresponding to each of the second bolt fasteners, and the second bolt fasteners connect the connecting plate to the roller shutter machine gearbox through the corresponding third through holes and the fourth through holes.

[0015] The beneficial effects of the present application are reflected in the addition of a sprocket-type shaft limit device consisting of a shaft limit housing, a synchronous belt mechanism, a roller shutter machine limit piece, a limit piece fixing device, a shaft lead screw, an upper limit microswitch, a lower limit microswitch and an external upper limit travel switch. The shaft lead screw in the device is connected to the roller shutter machine winding rod through a synchronous belt mechanism, and a roller shutter machine limit piece is installed on the shaft lead screw in the device. The roller shutter machine limit piece is fixed by a limit piece fixing device on one side of the shaft lead screw, and the roller shutter machine limit piece moves left and right on the shaft lead screw as the roller shutter machine winding rod moves in the forward and reverse directions; the two ends on the other side of the shaft lead screw are respectively set with the positions of the upper limit microswitch and the lower limit microswitch according to the upper and lower distances of the roller shutter machine winding rod, and are fixed, and the upper limit microswitch and the lower limit microswitch are respectively connected with the forward and reverse controller of the roller shutter machine; when the roller shutter machine winding rod rotates forward to the upper limit When the shutter machine limiter on the rotating shaft screw rod touches the upper limit micro switch, the forward running circuit of the shutter machine controlled by the IoT terminal through the forward and reverse controller of the shutter machine is cut off in time, thereby realizing the limit control of the forward running distance of the shutter machine, or when the shutter machine rolling rod touches the external upper limit stroke switch, the forward running circuit of the shutter machine controlled by the IoT terminal through the forward and reverse controller of the shutter machine is cut off, and the shutter machine stops running, thereby achieving the purpose of protecting the safe operation of the shutter machine and preventing the shutter machine from over-rolling and causing an accident; when the shutter machine rolling rod reverses and runs to the lower limit, the shutter machine limiter on the rotating shaft screw rod touches the lower limit micro switch, and promptly cuts off the reverse running circuit of the shutter machine controlled by the IoT terminal through the forward and reverse controller of the shutter machine, thereby realizing the limit control of the reverse running distance of the shutter machine, thereby achieving the purpose of protecting the safe operation of the shutter machine and preventing the shutter machine from rolling back and causing an accident. The limiting system set up in the present application is equipped with a sprocket-type shaft limiting device, which, in conjunction with the Internet of Things (IoT) terminal, greatly improves the safe operation reliability and management efficiency of the roller shutter machine. It is safe and reliable, has precise limiting, and has an extremely low failure rate, and is a roller shutter machine limiter that is easy to promote and apply widely.

[0016] Additional aspects and advantages of the present application will be given in part in the description below, and in part will become apparent from the description below, or will be learned through the practice of the present application. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Additional aspects and advantages of the present application will become apparent and easily understood from the description of the embodiments in conjunction with the following drawings, in which:

[0018] Figure 1 A schematic diagram of the structure of a limit system for controlling a roller shutter machine based on the Internet of Things provided in an embodiment of the present application;

[0019] Figure 2 A schematic diagram of the connection relationship between the Internet of Things terminal and other components provided in an embodiment of the present application.

[0020] Reference numerals:

[0021] Rolling rod 100 of rolling curtain machine, first synchronous gear 110, second synchronous gear 120, synchronous toothed chain 130;

[0022] The rotating shaft limiting housing 200, the limiting member fixing device 210, the rotating shaft screw rod 220, the roller shutter machine limiting member 230, the upper limit micro switch 240, the lower limit micro switch 250, and the rotating shaft bearing 260;

[0023] The connecting plate 300 , the first bolt fastener 310 , and the second bolt fastener 320 . DETAILED DESCRIPTION

[0024] The embodiments of the present application are described in detail below, and examples of the embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals throughout represent the same or similar elements or elements having the same or similar functions. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain the present application, and cannot be understood as limiting the present application.

[0025] In the description of the present application, it should be understood that descriptions involving orientation, such as up, down, front, back, left, right, etc., indicating orientations or positional relationships, are based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the present application.

[0026] In the description of this application, if there is a description of first or second, it is only for the purpose of distinguishing technical features, and cannot be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features or implicitly indicating the order of the indicated technical features.

[0027] In the description of this application, unless otherwise clearly defined, terms such as setting, installing, connecting, etc. should be understood in a broad sense, and technicians in the technical field can reasonably determine the specific meanings of the above terms in this application based on the specific content of the technical solution.

[0028] With the development of the facility agriculture industry, roller shutter machines have been widely used in the field of modern facility agriculture production. Most roller shutter machine gearboxes only have gear box transmission functions and lack operation limit control functions. In this case, daily roller shutter machine management is still mainly manual, which is easily affected by operator negligence, resulting in accidents such as over-winding and reverse-winding of the roller shutter machine.

[0029] At present, there are various types of limiters for rolling shutter machines, but there are various problems in actual application effects, such as inaccurate lower limiter, deviation and wear of electronic limiters due to long-term operation, and low reliability of limiters, which prevents them from being widely promoted and applied.

[0030] In order to solve the above-mentioned problems, the present application proposes a limiting system for controlling a roller shutter machine based on the Internet of Things. The embodiments of the present application are further elaborated below in conjunction with the accompanying drawings.

[0031] Reference Figure 1 to Figure 2 The present application provides a limit system for controlling a roller shutter machine based on the Internet of Things, including a roller shutter machine rolling rod 100, a rotating shaft limit housing 200, a synchronous belt mechanism, a roller shutter machine limit member 230, a limit member fixing device 210, a rotating shaft screw 220, an upper limit micro switch 240, a lower limit micro switch 250, an external upper limit stroke switch, a roller shutter machine forward and reverse controller and an Internet of Things terminal; one end of the synchronous belt mechanism is fixedly connected to the roller shutter machine rolling rod 100, and the other end of the synchronous belt mechanism is fixedly connected to the roller shutter machine rolling rod 100. One end is fixedly connected to one end of the shaft screw rod 220, the shaft screw rod 220 is inserted into the shaft limit housing 200, and shaft bearings 260 are respectively arranged at both ends of the shaft screw rod 220. The two shaft bearings 260 are respectively fixedly connected to the shaft limit housing 200, and the two shaft bearings 260 are located on the same side of the synchronous belt mechanism. The upper limit micro switch 240 and the lower limit micro switch 250 are both arranged on the shaft limit housing 200. The micro switches 250 are all arranged near the shaft screw 220, and the upper limit micro switch 240 is arranged on the end of the shaft limit housing 200 away from the synchronous belt mechanism, and the lower limit micro switch 250 is arranged near the middle position of the shaft screw 220. The roller shutter limiter 230 is threadedly connected with the shaft screw 220, and the roller shutter limiter 230 is arranged between the two shaft bearings 260. The limiter fixing device 210 is fixed on the shaft limit housing 200, and the limiter fixing device 210 is fixed on the shaft limit housing 200. The two ends of the device 210 correspond to the positions of the upper limit microswitch 240 and the lower limit microswitch 250 respectively, and the roller shutter machine limit member 230 is clamped on the limit member fixing device 210; the external upper limit travel switch is connected in series with the upper limit microswitch 240, and the roller shutter machine forward and reverse controller is connected to the roller shutter machine rolling rod 100 and the Internet of Things terminal respectively, and the upper limit microswitch 240, the lower limit microswitch 250 and the external upper limit travel switch are all connected to the Internet of Things terminal.

[0032] In some embodiments, the limit member fixing device 210 is a spring-fixed card, and the limit member fixing device 210 and the shaft limit housing 200 are fixedly connected by two bolt fasteners, and the positions of the upper limit micro switch 240 and the lower limit micro switch 250 are respectively set to correspond to the two ends of the limit fixing device.

[0033] Specifically, a forward and reverse control circuit of the rolling machine is provided in the forward and reverse controller of the rolling machine. The Internet of Things terminal controls the forward or reverse rotation of the rolling machine rod 100 through the forward and reverse controller of the rolling machine. The rolling machine rod 100 drives the synchronous belt mechanism and the rotating shaft screw 220 connected to the synchronous belt mechanism to rotate synchronously, thereby driving the limiting member 230 of the rolling machine to move laterally on the limiting member fixing device 210.

[0034] In some embodiments, Figure 2 As shown, the upper limit micro switch 240, the lower limit micro switch 250 and the external upper limit travel switch are respectively connected to the Internet of Things terminal. When the roller shutter limit member 230 touches the upper limit micro switch 240, the upper limit micro switch 240 sends the sensed first upper limit sensing signal to the Internet of Things terminal. The Internet of Things terminal controls the forward running circuit of the roller shutter machine controlled by the forward and reverse running controller of the roller shutter machine to stop running according to the first upper limit sensing signal, so as to stop the roller shutter machine from running, so as to achieve the purpose of protecting the safe operation of the roller shutter machine and prevent the roller shutter machine from over-rolling and causing an accident. Alternatively, when the roller shutter machine rolling rod 100 touches the external upper limit travel switch, the external upper limit travel switch sends the sensed second upper limit sensing signal to the Internet of Things terminal. The networking terminal controls the forward running circuit of the rolling machine controlled by the forward and reverse controller of the rolling machine to stop running according to the second upper limit sensing signal, so that the rolling machine stops running, thereby achieving the purpose of protecting the safe operation of the rolling machine and preventing the rolling machine from over-winding and causing an accident; when the rolling rod 100 of the rolling machine reverses and runs to the lower limit, the rolling machine limit member 230 on the shaft screw 220 touches the lower limit microswitch 250, and the lower limit microswitch 250 sends the sensed lower limit sensing signal to the Internet of Things terminal, and the Internet of Things terminal controls the reverse running circuit of the rolling machine controlled by the forward and reverse controller of the rolling machine to stop running according to the lower limit sensing signal, so that the rolling machine stops running, thereby achieving the purpose of protecting the safe operation of the rolling machine and preventing the rolling machine from reverse rolling and causing an accident.

[0035] In some embodiments, the external upper limit travel switch is connected in series with the upper limit microswitch 240, the forward and reverse controller of the roller shutter machine is connected to the roller shutter machine rod 100 and the Internet of Things terminal respectively, and the upper limit microswitch 240, the lower limit microswitch 250 and the external upper limit travel switch are all connected to the Internet of Things terminal.

[0036] In the present application, a sprocket type shaft limit device consisting of a shaft limit housing 200, a synchronous belt mechanism, a roller shutter limiter 230, a limiter fixing device 210, a shaft screw 220, an upper limit micro switch 240, a lower limit micro switch 250 and an external upper limit stroke switch is added. The shaft screw 220 in the device is connected to the roller shutter reel 100 through a synchronous belt mechanism, and a roller shutter limiter 230 is installed on the shaft screw 220 in the device. Fixed by the limit piece fixing device 210 on one side of the rotating shaft screw rod 220, the roller shutter machine limit piece 230 moves left and right on the rotating shaft screw rod 220 as the roller shutter machine rolling rod 100 moves in the forward and reverse directions; the two ends on the other side of the rotating shaft screw rod 220 are respectively set with the positions of the upper limit micro switch 240 and the lower limit micro switch 250 according to the upper and lower distances of the roller shutter machine rolling rod 100, and are fixed, and the upper limit micro switch 240 and the lower limit micro switch 250 are respectively connected to the roller shutter machine forward and reverse controller. When the shutter machine rolling rod 100 rotates forward to the upper limit, the shutter machine limiter 230 on the rotating shaft screw 220 touches the upper limit micro switch 240, and the shutter machine forward running circuit controlled by the Internet of Things terminal through the shutter machine forward and reverse controller is promptly cut off, thereby realizing the limit control of the shutter machine forward running distance; or when the shutter machine rolling rod 100 touches the external upper limit travel switch, the shutter machine forward running circuit controlled by the Internet of Things terminal through the shutter machine forward and reverse controller is cut off, and the shutter machine stops running, thereby achieving the purpose of protecting the shutter machine from running safely and preventing accidents caused by over-rolling of the shutter machine; when the shutter machine rolling rod 100 reverses to the lower limit, the shutter machine limiter 230 on the rotating shaft screw 220 touches the lower limit micro switch 250, and the shutter machine reverse running circuit controlled by the Internet of Things terminal through the shutter machine forward and reverse controller is promptly cut off, thereby realizing the limit control of the shutter machine reverse running distance, thereby achieving the purpose of protecting the shutter machine from running safely and preventing accidents caused by the shutter machine back-rolling. The limiting system set up in the present application is equipped with a sprocket-type shaft limiting device, which, in conjunction with the Internet of Things (IoT) terminal, greatly improves the safe operation reliability and management efficiency of the roller shutter machine. It is safe and reliable, has precise limiting, and has an extremely low failure rate, and is a roller shutter machine limiter that is easy to promote and apply widely.

[0037] Reference Figure 1 It can be understood that a plurality of slots are evenly arranged on the shutter limiter 230, a plurality of clips matching the slots are convexly arranged on the shutter limiter fixing device 210, and the shutter limiter fixing device 210 is clipped to the slots on the shutter limiter 230 through the clips.

[0038] It should be noted that the periphery of the roller shutter machine limiter 230 is set to a gear tooth shape so that the roller shutter machine limiter 230 is clamped with the limiter fixing device 210 to limit the roller shutter machine limiter 230 and prevent the roller shutter machine limiter 230 from rotating at will. When the shaft screw 220 rotates in the forward and reverse directions, the roller shutter machine limiter 230 is driven to move horizontally on the limiter fixing device 210.

[0039] Reference Figure 1 It can be understood that the synchronous belt mechanism includes a first synchronous gear 110, a second synchronous gear 120 and a synchronous toothed chain 130. The first synchronous gear 110 is fixedly sleeved on the roller shutter machine rolling rod 100, and the second synchronous gear 120 is fixedly sleeved on one end of the rotating shaft screw 220 close to the first synchronous gear 110. The first synchronous gear 110 and the second synchronous gear 120 are connected by the synchronous toothed chain 130.

[0040] It should be noted that the inner circumference of the synchronous toothed chain 130 is made into a tooth shape so that it meshes with the first synchronous gear 110 and the second synchronous gear 120 respectively. Since the deformation of the strong layer is small after bearing the load, the circumferential pitch of the synchronous toothed chain 130 can be kept unchanged. Therefore, there is no relative sliding between the synchronous toothed chain 130 and the first synchronous gear 110 and the second synchronous gear 120, thereby ensuring synchronous transmission and a constant transmission ratio.

[0041] Reference Figure 1 It can be understood that the limiting system for controlling the roller shutter machine based on the Internet of Things also includes a flange, which is mounted on the roller shutter machine rolling rod 100, and the first synchronous gear 110 is arranged close to the flange, and the diameter of the flange is greater than the diameter of the first synchronous gear 110.

[0042] It should be noted that the diameter of the flange is greater than the diameter of the first synchronous gear 110 , so as to protect the synchronous toothed chain 130 from wear.

[0043] Reference Figure 1 It can be understood that the limiting system for controlling the roller shutter machine based on the Internet of Things also includes a roller shutter machine gearbox, and the shaft limiting housing 200 is fixedly arranged at the front end of the roller shutter machine gearbox, and the output shaft of the roller shutter machine gearbox is fixedly connected to the roller shutter machine winding rod 100 through a flange.

[0044] It should be noted that the flange is a component used to connect the roller shutter machine gearbox and the roller shutter machine rolling rod 100; the gearbox is used to achieve different speed outputs, and then the rotation speed of the rolling rod is controlled by the gearbox, and the rotation speed of the first synchronous gear 110 is controlled by the rolling rod. The first synchronous gear 110 drives the second synchronous gear 120 to rotate synchronously through the synchronous toothed chain 130, and the second synchronous gear 120 drives the fixedly connected rotating shaft screw 220 to rotate synchronously, and the roller shutter machine limiter 230 moves left and right on the rotating shaft screw 220 as the rotating shaft screw 220 moves in the forward and reverse directions.

[0045] Reference Figure 1 It can be understood that the limiting system for controlling the roller shutter machine based on the Internet of Things also includes a connecting plate 300, and the shaft limiting housing 200 and the roller shutter machine gearbox are connected through the connecting plate 300.

[0046] Reference Figure 1 It can be understood that the limiting system for controlling the roller shutter machine based on the Internet of Things also includes at least two first bolt fasteners 310, a first through hole corresponding to each first bolt fastener 310 is opened on the connecting plate 300, and a second through hole corresponding to each first bolt fastener 310 is opened on the rotating shaft limiting housing 200, and the first bolt fastener 310 connects the connecting plate 300 to the rotating shaft limiting housing 200 through the corresponding first through hole and the second through hole.

[0047] In some embodiments, reference Figure 1 , four first bolt fasteners 310 are provided, a first through hole corresponding to each first bolt fastener 310 is opened on the connecting plate 300, and a second through hole corresponding to each first bolt fastener 310 is opened on the rotating shaft limiting shell 200. The first bolt fastener 310 connects the connecting plate 300 with the rotating shaft limiting shell 200 through the corresponding first through hole and the second through hole, and a stable connection between the rotating shaft limiting shell 200 and the connecting plate 300 is achieved through the four first bolt fasteners 310; in other embodiments, other numbers of first bolt fasteners 310 may also be provided, and the embodiments of the present application are not limited thereto.

[0048] Reference Figure 1 It can be understood that the limiting system for controlling the roller shutter machine based on the Internet of Things also includes at least two second bolt fasteners 320, and a third through hole corresponding to each second bolt fastener 320 is opened on the connecting plate 300, and a fourth through hole corresponding to each second bolt fastener 320 is opened on the roller shutter machine gearbox, and the second bolt fasteners 320 connect the connecting plate 300 to the roller shutter machine gearbox through the corresponding third through holes and fourth through holes.

[0049] In some embodiments, reference Figure 1, four second bolt fasteners 320 are provided, and a third through hole corresponding to each second bolt fastener 320 is provided on the connecting plate 300, and a fourth through hole corresponding to each second bolt fastener 320 is provided on the rolling machine gearbox. The second bolt fasteners 320 connect the connecting plate 300 to the rolling machine gearbox through the corresponding third through holes and fourth through holes. A stable connection between the rolling machine gearbox and the connecting plate 300 is achieved through the four second bolt fasteners 320, further improving the stability of the connection between the shaft limit housing 200 and the rolling machine gearbox; in other embodiments, other numbers of first bolt fasteners 310 may also be provided, which is not limited in the embodiments of the present application.

[0050] In the description of this specification, the description with reference to the terms "one embodiment", "some embodiments", "illustrative embodiments", "examples", "specific examples", or "some examples" means that the specific features, structures, materials, or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the present application. In this specification, the schematic representation of the above terms does not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials, or characteristics described may be combined in any one or more embodiments or examples in a suitable manner.

[0051] The above is a preferred embodiment of the present application. It should be pointed out that for ordinary technicians in this technical field, several improvements and modifications can be made without departing from the principles of the present application. These improvements and modifications are also considered to be within the scope of protection of the present application.

[0052] Although the embodiments of the present application have been shown and described, those skilled in the art will appreciate that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present application, and that the scope of the present application is defined by the claims and their equivalents.

Claims

1. A limit system for controlling a roller shutter machine based on the Internet of Things, characterized in that: include: Rolling rod of roller shutter machine, rotating shaft limit housing, synchronous belt mechanism, roller shutter machine limit part, limit part fixing device, rotating shaft lead screw, upper limit micro switch, lower limit micro switch, external upper limit stroke switch, roller shutter machine forward and reverse controller and Internet of Things terminal; One end of the synchronous belt mechanism is fixedly connected to the rolling rod of the roller shutter machine, and the other end of the synchronous belt mechanism is fixedly connected to one end of the rotating shaft screw rod, the rotating shaft screw rod is penetrated through the rotating shaft limit housing, and rotating shaft bearings are respectively arranged at both ends of the rotating shaft screw rod, and the two rotating shaft bearings are respectively fixedly connected to the rotating shaft limit housing, and the two rotating shaft bearings are located on the same side of the synchronous belt mechanism, the upper limit micro switch and the lower limit micro switch are both arranged on the rotating shaft limit housing, and the upper limit micro switch and the lower limit micro switch are close to the rotating shaft screw rod. The upper limit micro switch is arranged on the end of the rotating shaft limit housing away from the synchronous belt mechanism, the lower limit micro switch is arranged near the middle position of the rotating shaft screw rod, the roller shutter machine limit piece is threadedly connected with the rotating shaft screw rod, and the roller shutter machine limit piece is arranged between the two rotating shaft bearings, the limit piece fixing device is fixedly arranged on the rotating shaft limit housing, and the two ends of the limit piece fixing device respectively correspond to the positions of the upper limit micro switch and the lower limit micro switch, and the roller shutter machine limit piece is clamped on the limit piece fixing device; The external upper limit travel switch is connected in series with the upper limit microswitch, the roller shutter forward and reverse controller is respectively connected to the roller shutter machine rolling rod and the Internet of Things terminal, and the upper limit microswitch, the lower limit microswitch and the external upper limit travel switch are all connected to the Internet of Things terminal.

2. The limiting system for controlling a roller shutter machine based on the Internet of Things according to claim 1 is characterized in that: A plurality of slots are evenly arranged on the shutter roller limiter, a plurality of clips matching the slots are convexly arranged on the shutter roller limiter fixing device, and the shutter roller limiter fixing device is clipped to the slots on the shutter roller limiter through the clips.

3. The position limiting system for controlling a roller shutter machine based on the Internet of Things according to claim 1 is characterized in that: The synchronous belt mechanism includes a first synchronous gear, a second synchronous gear and a synchronous toothed chain. The first synchronous gear is fixedly sleeved on the rolling rod of the roller shutter machine, and the second synchronous gear is fixedly sleeved on one end of the rotating shaft screw close to the first synchronous gear. The first synchronous gear and the second synchronous gear are connected through the synchronous toothed chain.

4. The position limiting system for controlling a roller shutter machine based on the Internet of Things according to claim 3 is characterized in that: The limiting system for controlling the roller shutter machine based on the Internet of Things also includes a flange, which is sleeved on the roller shutter machine rolling rod, and the first synchronous gear is arranged close to the flange, and the diameter of the flange is greater than the diameter of the first synchronous gear.

5. The position limiting system for controlling a roller shutter machine based on the Internet of Things according to claim 4 is characterized in that: The limiting system for controlling a roller shutter machine based on the Internet of Things also includes a roller shutter machine gearbox, the rotating shaft limiting housing is fixedly arranged at the front end of the roller shutter machine gearbox, and the output shaft of the roller shutter machine gearbox is fixedly connected to the roller shutter machine winding rod through the flange.

6. The position limiting system for controlling a roller shutter machine based on the Internet of Things according to claim 5 is characterized in that: The limiting system for controlling the roller shutter machine based on the Internet of Things also includes a connecting plate, and the rotating shaft limiting housing and the roller shutter machine gearbox are connected by the connecting plate.

7. The position limiting system for controlling a roller shutter machine based on the Internet of Things according to claim 6 is characterized in that: The limiting system for controlling the roller shutter machine based on the Internet of Things also includes at least two first bolt fasteners, the connecting plate is provided with a first through hole corresponding to each of the first bolt fasteners, the rotating shaft limiting shell is provided with a second through hole corresponding to each of the first bolt fasteners, and the first bolt fastener connects the connecting plate to the rotating shaft limiting shell through the corresponding first through hole and the second through hole.

8. The limiting system for controlling a roller shutter machine based on the Internet of Things according to claim 6 is characterized in that: The limiting system for controlling the roller shutter machine based on the Internet of Things also includes at least two second bolt fasteners, and the connecting plate is also provided with a third through hole corresponding to each of the second bolt fasteners, and the roller shutter machine gearbox is provided with a fourth through hole corresponding to each of the second bolt fasteners, and the second bolt fasteners connect the connecting plate to the roller shutter machine gearbox through the corresponding third through holes and the fourth through holes.

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