Typhoon-proof pigeon house roller blind device

Abstract

The utility model relates to poultry breeding facility technical field more specifically, relate to a kind of typhoon pigeon house roller blind device, limiting component includes ratchet member and limiting rod, ratchet member is connected with winding rope shaft and can rotate limiting rod with mounting plate with winding rope shaft along first direction, one end of limiting rod is provided with pawl protrusion, the tooth surface of the gear tooth both sides of ratchet member is first tooth surface and second tooth surface respectively, pawl protrusion and first tooth surface abut when limiting ratchet member rotates along first direction, pawl protrusion is away from first tooth surface and abuts with second tooth surface when ratchet member rotates along second direction.The utility model can avoid roller blind when opening due to greater dead weight and cannot be stably kept in opening position simultaneously also without reducing the lowering speed of roller blind.

Description

Technical Field

[0001] This utility model relates to the field of poultry and livestock breeding facilities technology, and more specifically, to a typhoon-proof pigeon coop roller shutter device. Background Technology

[0002] In modern, large-scale pigeon farms along the coast, lofts are typically built on the beach to utilize tidal flats, but this also exposes them to constant threats from severe weather such as typhoons. The strong winds and torrential rains accompanying typhoons necessitate that the lofts have effective wind and rain protection facilities and be able to respond quickly. To control construction costs, commercially operated pigeon lofts commonly use plastic tarpaulins as roller blinds. These lofts are enormous, typically exceeding 30 meters in width and 70 meters in length, resulting in a large required area of ​​tarpaulin film and a significant overall weight for the roller blind rod and the tarpaulin it supports. The basic structure involves fixing the upper edge of the entire plastic tarpaulin sheet to a horizontal roller blind rod, which is then raised and lowered by a traction rope.

[0003] However, this simple roller blind structure has a significant drawback in practical applications. Once opened, its immense weight easily causes it to slide down naturally, making it difficult to maintain a stable open position. To address this issue, existing technologies typically attempt to add limiting mechanisms, such as latches or pins on the guide rails, to prevent this sliding. However, these solutions introduce new drawbacks—increased friction and slower unlocking speed, thus reducing the lowering speed of the roller blind. In the event of sudden weather changes such as typhoons requiring emergency closure of the blind, this slow response may allow a large amount of wind and rain to enter the pigeon loft, causing significant losses. Utility Model Content

[0004] The purpose of this invention is to overcome the limitations of existing limiting mechanisms that easily reduce the lowering speed of the roller shutter, and to provide a typhoon-proof pigeon coop roller shutter device that can prevent the roller shutter from being unable to maintain a stable open position due to its large self-weight when it is opened, while also not reducing the lowering speed of the roller shutter during sudden weather changes such as typhoons.

[0005] To solve the above-mentioned technical problems, the technical solution adopted by this utility model is as follows: A typhoon-resistant pigeon coop roller shutter device is provided, comprising a mounting plate, a control assembly, and a roller shutter assembly. The roller shutter assembly includes a roller shutter frame, a traction rope, a film curtain, and a roller shutter rod. The control assembly includes a traction rope shaft and a handwheel. One end of the traction rope shaft is rotatably connected to the mounting plate, and the other end is fixedly connected to the handwheel. One end of the film curtain is fixedly connected to the roller shutter frame, and the other end is wound around the roller shutter rod. One end of the traction rope is wound around one end of the roller shutter rod, and the other end is wound around the traction rope shaft. The device also includes a restraining assembly, which includes a thorn. The ratchet assembly includes a ratchet wheel and a limiting rod. The ratchet wheel is connected to the rope winding shaft and can rotate with the rope winding shaft in a first direction and a second direction, where the first direction and the second direction are opposite. The limiting rod is rotatably connected to the mounting plate. One end of the limiting rod is provided with a pawl protrusion. The two sides of the teeth of the ratchet wheel are a first tooth surface and a second tooth surface, respectively. When the pawl protrusion abuts against the first tooth surface, it restricts the ratchet wheel from rotating in the first direction. When the ratchet wheel rotates in the second direction, the pawl protrusion moves away from the first tooth surface and abuts against the second tooth surface.

[0006] In the operation of the above scheme, the operator turns the handwheel in the second direction (e.g., clockwise), causing the winding shaft to rotate synchronously and begin winding the traction rope. Simultaneously, the ratchet fixed to the winding shaft rotates in the second direction (e.g., clockwise). The wound traction rope pulls the roller shutter rod upwards via the pulley system. The roller shutter rod rotates synchronously during its ascent, winding up the film curtain. During this process, the pawl protrusion will slide into contact with the second tooth surface of the ratchet teeth, producing a slight sound, but it will not impede rotation.

[0007] When the roller blind reaches the predetermined height and the handwheel stops turning, the heavy weight of the roller blind assembly (blind rod and film curtain) immediately creates a tendency for the blind to fall. This tendency reverses the rotation of the winding cord shaft in the first direction (counterclockwise). This tiny reverse rotation immediately causes the ratchet mechanism to rotate instantaneously in the first direction, causing the pawl protrusion at one end of the limiting rod to engage and abut against the first tooth surface of the ratchet teeth. This, along with the winding cord shaft and traction rope, holds the heavy roller blind assembly in place, preventing it from sliding down due to its own weight, thus achieving stable suspension at any height.

[0008] When an emergency closing of the roller blind is required, the operator simply needs to manually push the limiting lever outwards, causing it to rotate around the pivot point, thus completely disengaging the pawl protrusion from the teeth of the ratchet assembly. Once the pawl protrusion disengages from the first tooth surface, the restriction on the reverse rotation of the roller cord shaft is released. The heavy roller blind assembly then falls rapidly under its own weight, causing the roller blind rod to rotate in the opposite direction and release the film curtain, achieving rapid closure and effectively responding to sudden weather conditions such as typhoons.

[0009] Furthermore, the mounting plate is provided with a connecting block, and the connecting block is provided with a mounting groove. The limiting component also includes a rotating column, and the limiting rod is rotatably connected to the mounting groove through the rotating column. When the pawl protrusion restricts the ratchet component to prevent the entire heavy roller blind assembly from falling due to gravity, the rotating column will bear a large shear force. The connecting block provides a larger area of ​​support contact surface on the upper and lower sides of the rotating column, effectively distributing the shear force to the overall structure of the connecting block, avoiding stress concentration on the edge of a single small hole on the mounting plate, and enhancing the ability to resist shear deformation.

[0010] Furthermore, the limiting component also includes an elastic element, one end of which is fixedly connected to the limiting rod, and the other end is fixedly connected to the bottom surface of the mounting groove. The elastic element is always in a state where its elastic potential energy is not zero. The elastic element pulls the limiting rod so that the pawl protrusion can stably adhere to the teeth of the ratchet component.

[0011] Furthermore, the end of the limiting rod away from the protrusion of the pawl extends out of the mounting groove. The limiting rod extends out of the mounting groove by a certain length to form a handle. When rotating, it is only necessary to move the end extending out of the mounting groove, and the limiting rod can be easily rotated through the lever action.

[0012] Furthermore, it also includes several guide wheels, which are rotatably connected to the external wall, and the traction rope abuts against the side of the guide wheels; as the core component for transmitting power, if the traction rope is in a slack state, it will produce an ineffective idle stroke between the operation of the handwheel and the movement of the roller shutter rod. The guide wheels tension the traction rope, so that the traction rope is always in a taut state, ensuring the directness and immediacy of power transmission.

[0013] Furthermore, the roller shutter frame includes an upper frame and a lower frame, with a thin film curtain installed on the top of both the upper and lower frames. Two sets of control and limiting components are provided, located on either side of the mounting plate. The roller shutter adopts a double-layer design, with two layers of thin film curtains, enabling a combination of ventilation, sunshade, heat preservation, and windproofing effects. Managers can precisely manage the microenvironment of the pigeon loft according to subtle seasonal and weather changes. In summer, a "top-opening, bottom-shading" mode is used to ensure ventilation while avoiding direct sunlight and overheating. In winter, a "top-blocking, bottom-insulating" mode is used to resist cold winds and effectively maintain the loft temperature. In the face of typhoons, a unique "middle gap" mode can be used to reduce wind pressure by leaving gaps to divert airflow while ensuring rain protection, thus improving structural safety.

[0014] Furthermore, the winding shaft is also connected to a linkage pulley, which is located between the ratchet and the handwheel. It also includes a belt drive assembly, which is slidably connected to the mounting plate and located on the side of the linkage pulley away from the limiting rod. The belt drive assembly can slide to connect with the linkage pulley. In daily management, the belt drive assembly is in a disengaged state, and the two layers of roller blinds can be controlled independently to meet the needs of refined environmental control such as summer ventilation and winter insulation. When the roller blinds are opened on non-typhoon days, the belt drive assembly can be slid to connect with the linkage pulley, thereby connecting the winding shafts on both sides of the mounting plate together. The operator only needs to turn one handwheel to make both winding shafts rotate simultaneously, achieving the simultaneous and slow opening of the upper and lower layers of film curtains, improving the operator's work efficiency.

[0015] Furthermore, the belt drive assembly includes slide rails, connectors, and pulleys mounted on both sides of the mounting plate. One end of the connector is slidably connected to the slide rail, and the other end is rotatably connected to the pulley. A double-toothed belt is mounted on the pulley, and the side of the double-toothed belt away from the pulley can abut against the linkage pulley. Both sides of the double-toothed belt are provided with meshing teeth, and the belt drive assembly realizes the transmission connection between the two linkage pulleys through the double-toothed belt.

[0016] Furthermore, it also includes a connecting rod, both ends of which are fixedly connected to the end face of the connector near the pulley. The connecting rod is provided with several pin holes. When the pin holes on the pulley slide onto the connecting rod and align with the pin holes on the external wall, inserting the pins can fix the entire belt drive assembly in the working position.

[0017] Furthermore, the length of the connecting rod is at least greater than the distance between the rope winding shafts of the two sets of limiting components, and the length of the connecting rod is greater than the center distance between the two linkage pulleys. When the linkage pulley meshes with the double-sided toothed belt, the two can press against each other after the pin is inserted, thereby increasing the wrap angle of the double-sided toothed belt on the pulley, increasing the number of meshing teeth, and simultaneously tensioning the double-sided toothed belt to facilitate stable power transmission.

[0018] Compared with the prior art, the beneficial effects of this utility model are: 1. One end of the winding shaft is rotatably connected to the mounting plate, and the other end is fixedly connected to the handwheel. One end of the film curtain is fixedly connected to the roller shutter frame, and the other end is wound around the roller shutter rod. One end of the traction rope is wound around one end of the roller shutter rod, and the other end is wound around the winding shaft. The limiting component includes a ratchet and a limiting rod. The ratchet is connected to the winding shaft and can rotate with the winding shaft in a first direction and a second direction. The limiting rod is rotatably connected to the mounting plate. One end of the limiting rod is provided with a pawl protrusion. The two sides of the teeth of the ratchet are a first tooth surface and a second tooth surface, respectively. When the pawl protrusion abuts against the first tooth surface, it limits the rotation of the ratchet in the first direction. When the ratchet rotates in the second direction, the pawl protrusion moves away from the first tooth surface and abuts against the second tooth surface. Through the ratchet and pawl protrusion, the film curtain can be stably held in the open position when it is opened. After rotating the limiting rod, the pawl protrusion can completely disengage from the ratchet, avoiding a reduction in the lowering speed of the roller shutter during sudden weather changes such as typhoons.

[0019] 2. The roller shutter frame includes an upper frame and a lower frame. A thin film curtain is installed on the top of both the upper frame and the lower frame. The roller shutter adopts a double-layer design, which realizes the refinement and multi-functionality of environmental control capabilities, enabling the pigeon house to intelligently adapt to complex and changeable climatic conditions. Attached Figure Description

[0020] Figure 1 A schematic diagram of a typhoon-proof pigeon coop roller shutter device; Figure 2 This is a schematic diagram of the combined installation of a typhoon-resistant pigeon coop roller shutter device, including a limiting component, a control component, and a belt drive component. Figure 3 A schematic diagram of the belt drive assembly of a typhoon-resistant pigeon loft roller shutter device; Figure 4 A schematic diagram of the connection between the ratchet component and the limiting rod in a typhoon-resistant pigeon coop roller shutter device; In the attached diagram: 100, mounting plate; 110, connecting block; 111, mounting groove; 200, control assembly; 210, winding rope shaft; 220, handwheel; 300, roller blind assembly; 310, roller blind frame; 311, upper frame; 312, lower frame; 320, traction rope; 330, film curtain; 340, roller blind rod; 350, guide wheel; 400, limiting assembly; 410, ratchet component; 411, first tooth surface; 412, second tooth surface; 420, limiting rod; 421, pawl protrusion; 430, elastic element; 440, rotating column; 500, belt drive assembly; 510, slide rail; 520, connecting component; 530, pulley; 540, connecting rod; 541, pin hole; 550, double-sided toothed belt; 600, linkage pulley. Detailed Implementation

[0021] The present invention will be further described below with reference to specific embodiments. The accompanying drawings are for illustrative purposes only, representing schematic diagrams rather than actual physical objects, and should not be construed as limiting the scope of this patent. To better illustrate the embodiments of the present invention, some components in the drawings may be omitted, enlarged, or reduced, and do not represent the actual dimensions of the product. It is understandable to those skilled in the art that some well-known structures and their descriptions may be omitted in the drawings.

[0022] In the accompanying drawings of this utility model, the same or similar reference numerals correspond to the same or similar components. In the description of this utility model, it should be understood that if terms such as "upper," "lower," "left," and "right" indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, they are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, the terms used to describe positional relationships in the drawings are only for illustrative purposes and should not be construed as limiting this patent. For those skilled in the art, the specific meaning of the above terms can be understood according to the specific circumstances.

[0023] Example 1 This embodiment is a first embodiment of a typhoon-proof pigeon coop roller shutter device, such as... Figures 1 to 4 As shown, the system includes a mounting plate 100, a control assembly 200, and a roller blind assembly 300. The roller blind assembly 300 includes a roller blind frame 310, a traction rope 320, a film curtain 330, and a roller blind rod 340. The control assembly 200 includes a rope winding shaft 210 and a handwheel 220. One end of the rope winding shaft 210 is rotatably connected to the mounting plate 100, and the other end is fixedly connected to the handwheel 220. One end of the film curtain 330 is fixedly connected to the roller blind frame 310, and the other end is wound around the roller blind rod 340. One end of the traction rope 320 is wound around one end of the roller blind rod 340, and the other end is wound around the rope winding shaft 210. The system also includes a restraining assembly 400. The restraining assembly 400 includes... The device includes a ratchet 410 and a limiting rod 420. The ratchet 410 is connected to the rope winding shaft 210 and can rotate with the rope winding shaft 210 in a first direction and a second direction, which are opposite to each other. The limiting rod 420 is rotatably connected to the mounting plate 100. One end of the limiting rod 420 is provided with a pawl protrusion 421. The tooth surfaces on both sides of the ratchet 410 are a first tooth surface 411 and a second tooth surface 412, respectively. When the pawl protrusion 421 abuts against the first tooth surface 411, it restricts the ratchet 410 from rotating in the first direction. When the ratchet 410 rotates in the second direction, the pawl protrusion 421 moves away from the first tooth surface 411 and abuts against the second tooth surface 412.

[0024] In this embodiment, the first direction is counterclockwise. When the winding shaft 210 rotates in this direction, the traction rope 320 is released, thereby closing the roller blind. The second direction is clockwise. When the winding shaft 210 rotates in this direction, the traction rope 320 is wound up, thereby opening the roller blind.

[0025] Specifically, the mounting plate 100 is provided with a connecting block 110, and the connecting block 110 is provided with a mounting groove 111. The limiting component 400 also includes a rotating column 440. The limiting rod 420 is rotatably connected to the mounting groove 111 through the rotating column 440. When the pawl protrusion 421 restricts the ratchet component 410 to prevent the entire heavy roller blind assembly 300 from falling due to gravity, the rotating column 440 will bear a large shear force. The connecting block 110 provides a larger area of ​​support contact surface on the upper and lower sides of the rotating column 440, effectively dispersing the shear force to the overall structure of the connecting block 110, avoiding stress concentration on the edge of a single small hole on the mounting plate 100 (the mounting groove 111 is provided with a small hole, and the rotating column 440 is installed in the small hole), and enhancing the ability to resist shear deformation.

[0026] Specifically, such as Figure 4 As shown, the limiting component 400 also includes an elastic element 430. One end of the elastic element 430 is fixedly connected to the limiting rod 420, and the other end is fixedly connected to the bottom surface of the mounting groove 111. The elastic element 430 is always in a state where the elastic potential energy is not zero. The elastic element 430 pulls the limiting rod 420, so that the pawl protrusion 421 can be stably attached to the teeth of the ratchet component 410.

[0027] Specifically, the end of the limiting rod 420 away from the pawl protrusion 421 extends into the mounting groove 111. The limiting rod 420 extends a certain length out of the mounting groove 111 to form a handle. When rotating, it is only necessary to move the end extending out of the mounting groove 111, and the limiting rod 420 can be easily rotated through the lever action.

[0028] Specifically, it also includes several guide wheels 350, which are rotatably connected to the external wall. The traction rope 320 abuts against the side of the guide wheel 350. As the core component for transmitting power, if the traction rope 320 is in a slack state, it will produce an ineffective idle stroke between the operation of the handwheel 220 and the movement of the roller shutter rod 340. The guide wheels 350 tension the traction rope 320, so that the traction rope 320 is always in a taut state, ensuring the directness and immediacy of power transmission.

[0029] The working principle of the typhoon-proof pigeon coop roller shutter device in this embodiment is as follows: The operator turns the handwheel 220 clockwise (second direction), causing the winding shaft 210 to rotate synchronously and winding up the traction rope 320. The traction rope 320, guided and tensioned by the guide wheel 350, pulls the roller shutter rod 340 upwards and winds the film curtain 330, thus opening the shutter. During this process, the ratchet 410 fixed to the winding shaft 210 rotates synchronously clockwise. The second tooth surface 412 of its teeth presses against the pawl protrusion 421 at one end of the limiting rod 420, causing the limiting rod 420 to slightly rotate against the tension of the elastic element 430. The pawl protrusion 421 then slides over the tooth surface and makes a sound, but does not create any obstruction.

[0030] When the roller blind reaches the predetermined height and the handwheel 220 stops turning, the self-locking mechanism activates. Under the influence of gravity, the roller blind assembly 300 tends to fall, which in turn causes the winding shaft 210 and ratchet 410 to attempt a slight counter-clockwise (first direction) rotation. At this time, the pawl protrusion 421, which is always taut by the elastic element 430, quickly engages under the elastic force and firmly abuts against the first tooth surface 411 of the ratchet teeth, locking the reverse trend. The large counter-force is transmitted through the limiting rod 420 to its rotation fulcrum—the rotating column 440 embedded in the mounting groove 111 on the connecting block 110. The connecting block 110 provides robust support for the rotating column 440, dispersing the shear force.

[0031] When an emergency closing of the roller blind is required, the operator simply moves the handle end of the limiting lever 420 extending from the mounting slot 111. Utilizing the lever principle, the tension of the elastic element 430 is easily overcome, causing the limiting lever 420 to rotate around the rotating column 440, which in turn causes the pawl protrusion 421 at the other end to completely disengage from the ratchet element 410. After disengagement, the restriction of the reverse rotation of the winding rope shaft 210 immediately disappears, and the roller blind assembly 300 falls rapidly under its own gravity, simultaneously releasing the film curtain 330 and closing the roller blind, achieving rapid response during typhoon weather.

[0032] The beneficial effects of this embodiment are: the ratchet and pawl mechanism enables reliable self-locking and rapid release of the roller shutter at any open position, which can effectively prevent the roller shutter from being unable to maintain a stable open position due to its large weight when it is opened, while also not reducing the lowering speed of the roller shutter in emergency situations such as typhoons.

[0033] Example 2 This embodiment is a second embodiment of a typhoon-proof pigeon coop roller shutter device, such as... Figures 1 to 3 As shown, the difference from Embodiment 1 is as follows: Specifically, the roller shutter frame 310 includes an upper frame 311 and a lower frame 312. A thin film curtain 330 is installed on the top of both the upper frame 311 and the lower frame 312. Two sets of control components 200 and limiting components 400 are provided, located on either side of the mounting plate 100. The roller shutter adopts a double-layer design, with two layers of thin film curtains 330, enabling a combination of ventilation, shading, heat preservation, and windproofing effects. Managers can precisely manage the microenvironment of the pigeon house according to subtle seasonal and weather changes. In summer, a "top-opening, bottom-shading" mode is used to ensure ventilation while avoiding direct sunlight and overheating. In winter, a "top-blocking, bottom-insulating" mode is used to resist cold winds and effectively maintain the temperature inside the house. In the face of typhoons, a unique "middle gap" mode can be used to reduce wind pressure by leaving gaps to divert airflow while ensuring rain protection, thus improving structural safety.

[0034] Among them, such as Figure 1 As shown, the roller shutter rod 340 is a cylinder. The traction rope 320 extends from one side of the rod after being wound around one end of the roller shutter rod 340 several times. During the process of the winding shaft 210 winding the traction rope 320, the length of the traction rope 320 wound on the roller shutter rod 340 continuously decreases. At the same time, since the tension of the traction rope 320 only acts on one end of the center of mass (center of circle) of the roller shutter rod 340, it will drive the roller shutter rod 340 to roll, thereby rolling up the film curtain 330 and realizing the opening of the roller shutter.

[0035] Specifically, the winding shaft 210 is also connected to a linkage pulley 600, which is located between the ratchet 410 and the handwheel 220. It also includes a belt drive assembly 500, which is slidably connected to the mounting plate 100 and located on the side of the linkage pulley 600 away from the limiting rod 420. The belt drive assembly 500 can slide to connect with the linkage pulley 600. In daily management, the belt drive assembly 500 is in a disengaged state, and the two layers of roller blinds can be controlled independently to meet the needs of refined environmental control such as summer ventilation and winter insulation. When the roller blinds are opened on non-typhoon days, the belt drive assembly 500 can be slid to connect with the linkage pulley 600, thereby connecting the winding shafts 210 on both sides of the mounting plate 100 together. The operator only needs to turn one handwheel 220 to make both winding shafts 210 rotate simultaneously, realizing the simultaneous and slow opening of the upper and lower layers of film curtains 330, improving the operator's work efficiency.

[0036] The working principle of the typhoon-proof pigeon coop roller shutter device in this embodiment is as follows: In normal operation, the belt drive assembly 500 is disengaged, and the control assemblies 200 and limiting assemblies 400 on both sides operate independently. The operator can precisely control the upper and lower layers of film curtains 330 using two handwheels 220, depending on the season and weather conditions. For example, in summer, turning the handwheel 220 connected to the upper film curtain 330 can individually raise the upper film curtain 330 for ventilation, while simultaneously lowering the lower film curtain 330 halfway for sun shading; in winter, the upper film curtain 330 can be half-lowered to block the wind, while the lower film curtain 330 can be fully lowered for insulation. In this independent operation mode, each layer of the roller shutter is reliably positioned using its own limiting assembly 400.

[0037] When it is necessary to open or close the entire system to improve daily work efficiency (such as unified ventilation on non-typhoon days), the belt drive assembly 500 can be slid to connect the two linkage pulleys 600. At this time, the operator only needs to turn either handwheel 220, and the power can be synchronously transmitted to the rope winding shaft 210 on the other side through the belt drive assembly 500, thereby driving the upper and lower layers of film curtains 330 to open or close at the same speed.

[0038] The beneficial effects of this embodiment are as follows: Through the design of the upper and lower double-layer film curtain 330 and the belt drive assembly 500, the upper and lower film curtain 330 can be switched between independent control and linkage control, realizing refined management of environmental control and significantly improving operational efficiency.

[0039] Example 3 This embodiment is the third embodiment of a typhoon-proof pigeon coop roller shutter device, such as... Figure 2 and Figure 3 As shown, the difference from Example 2 is as follows: Specifically, the rope winding shaft 210 is also connected to a linkage pulley 600, which is located between the ratchet 410 and the handwheel 220. The belt drive assembly 500 includes a slide rail 510, a connector 520, and a pulley 530 mounted on both sides of the mounting plate 100. One end of the connector 520 is slidably connected to the slide rail 510, and the other end is rotatably connected to the pulley 530. A double-toothed belt 550 is mounted on the pulley 530. The side of the double-toothed belt 550 away from the pulley 530 can abut against the linkage pulley 600. Both sides of the double-toothed belt 550 are provided with meshing teeth. The belt drive assembly 500 realizes the transmission connection between the two linkage pulleys 600 through the double-toothed belt 550.

[0040] Specifically, it also includes a connecting rod 540, both ends of which are fixedly connected to the end face of the connector 520 near the pulley 530. The connecting rod 540 is provided with several pin holes 541. When the pulley 530 slides up to the pin hole 541 on the connecting rod 540 and aligns with the pin hole 541 on the external wall, inserting the pin will fix the entire belt drive assembly 500 in the working position.

[0041] Specifically, the length of the connecting rod 540 is at least greater than the distance between the rope winding shafts 210 of the two sets of limiting components 400, and the length of the connecting rod 540 is greater than the center distance between the two linkage pulleys 600. When the linkage pulley 600 meshes with the double-sided toothed belt 550, the two can press against each other after the pin is inserted, thereby increasing the wrap angle of the double-sided toothed belt 550 on the pulley 530, increasing the number of meshing teeth, and simultaneously tensioning the double-sided toothed belt 550 to facilitate stable power transmission.

[0042] The working principle of the typhoon-proof pigeon coop roller shutter device in this embodiment is as follows: When it is necessary to open or close the entire system to improve daily work efficiency (such as unified ventilation on non-typhoon days), the belt drive assembly 500 can be vertically slidable first. The connector 520 moves along the slide rail 510, driving the pulley 530 and the double-toothed belt 550 on it to approach the winding shaft 210 together, until the side of the double-toothed belt 550 away from the pulley 530 (i.e., the outer side) simultaneously engages with the two linkage pulleys 600 on both sides of the mounting plate 100. Then, the pins are simultaneously inserted into the pin holes 541 on the connecting rod 540 and the corresponding holes preset on the wall. At this time, the operator only needs to turn either handwheel 220, and the power can be synchronously transmitted to the winding shaft 210 on the other side through the belt drive assembly 500, thereby driving the upper and lower layers of film curtains 330 to open or close at the same speed.

[0043] When it is necessary to switch back to independent operation mode, simply remove the pin, and the connector 520 will fall naturally under the action of gravity, and the entire belt drive assembly 500 will slide away from the linkage pulley 600 along the slide rail 510.

[0044] The beneficial effects of this embodiment are: by adopting a belt drive structure and fixing it with simple sliding and pins, the problems of reliability and ease of operation of synchronous transmission are effectively solved.

[0045] In the specific implementation of the above embodiments, the technical features can be combined in any non-contradictory way. For the sake of brevity, not all possible combinations of the above technical features are described. However, as long as the combination of these technical features is not contradictory, it should be considered to be within the scope of this specification.

[0046] Obviously, the above embodiments of this utility model are merely examples for clearly illustrating this utility model, and are not intended to limit the implementation of this utility model. Those skilled in the art can make other variations or modifications based on the above description. It is neither necessary nor possible to exhaustively describe all embodiments here. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of this utility model should be included within the protection scope of the claims of this utility model.

Claims

1. A typhoon-resistant pigeon coop roller shutter device, comprising a mounting plate (100), a control component (200), and a roller shutter assembly (300), wherein the roller shutter assembly (300) includes a roller shutter frame (310), a traction rope (320), a film curtain (330), and a roller shutter rod (340); the control component (200) includes a rope winding shaft (210) and a handwheel (220); one end of the rope winding shaft (210) is rotatably connected to the mounting plate (100), and the other end is fixedly connected to the handwheel (220); one end of the film curtain (330) is fixedly connected to the roller shutter frame (310), and the other end is wound around the roller shutter rod (340); one end of the traction rope (320) is wound around one end of the roller shutter rod (340), and the other end is wound around the rope winding shaft (210). Its features are, It also includes a limiting component (400), which includes a ratchet (410) and a limiting rod (420). The ratchet (410) is connected to the rope winding shaft (210) and can rotate with the rope winding shaft (210) in a first direction and a second direction, the first direction being opposite to the second direction. The limiting rod (420) is rotatably connected to the mounting plate (100). One end of the limiting rod (420) is provided with a pawl protrusion (421). The tooth surfaces on both sides of the ratchet (410) are a first tooth surface (411) and a second tooth surface (412), respectively. When the pawl protrusion (421) abuts against the first tooth surface (411), it restricts the ratchet (410) from rotating in the first direction. When the ratchet (410) rotates in the second direction, the pawl protrusion (421) moves away from the first tooth surface (411) and abuts against the second tooth surface (412).

2. The typhoon-proof pigeon coop roller shutter device according to claim 1, characterized in that, The mounting plate (100) is provided with a connecting block (110), the connecting block (110) is provided with a mounting groove (111), the limiting component (400) further includes a rotating column (440), and the limiting rod (420) is rotatably connected to the mounting groove (111) through the rotating column (440).

3. The typhoon-proof pigeon coop roller shutter device according to claim 2, characterized in that, The limiting component (400) also includes an elastic element (430), one end of which is fixedly connected to the limiting rod (420), and the other end is fixedly connected to the bottom surface of the mounting groove (111). The elastic element (430) is always in a state where the elastic potential energy is not zero.

4. The typhoon-proof pigeon coop roller shutter device according to claim 2, characterized in that, The end of the limiting rod (420) away from the pawl protrusion (421) extends out of the mounting groove (111).

5. The typhoon-proof pigeon coop roller shutter device according to claim 1, characterized in that, It also includes several guide wheels (350), which are rotatably connected to the external wall surface, and the traction rope (320) abuts against the side of the guide wheel (350).

6. A typhoon-proof pigeon coop roller shutter device according to any one of claims 1-5, characterized in that, The roller shutter frame (310) includes an upper frame (311) and a lower frame (312). A thin film curtain (330) is installed on the top of both the upper frame (311) and the lower frame (312). The control component (200) and the limiting component (400) are each provided in two sets and are located on both sides of the mounting plate (100).

7. A typhoon-proof pigeon coop roller shutter device according to claim 6, characterized in that, The rope winding shaft (210) is also connected to a linkage pulley (600), which is located between the ratchet (410) and the handwheel (220). It also includes a belt drive assembly (500), which is slidably connected to the mounting plate (100) and located on the side of the linkage pulley (600) away from the limiting rod (420). The belt drive assembly (500) can slide to connect with the linkage pulley (600).

8. The typhoon-proof pigeon coop roller shutter device according to claim 7, characterized in that, The belt drive assembly (500) includes a slide rail (510), a connector (520), and a pulley (530) mounted on both sides of the mounting plate (100). One end of the connector (520) is slidably connected to the slide rail (510), and the other end is rotatably connected to the pulley (530). A double-toothed belt (550) is mounted on the pulley (530), and the side of the double-toothed belt (550) away from the pulley (530) can be connected to the linkage pulley (600).

9. A typhoon-proof pigeon coop roller shutter device according to claim 8, characterized in that, It also includes a connecting rod (540), both ends of which are fixedly connected to the end face of the connector (520) near the pulley (530), and the connecting rod (540) is provided with a plurality of pin holes (541).

10. A typhoon-resistant pigeon coop roller shutter device according to claim 9, characterized in that, The length of the link (540) is at least greater than the distance between the rope reels (210) of the two sets of limiting components (400).

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