Detachable roller shutter door wind-resistant device

Abstract

The invention relates to the technical field of roller shutter door wind resistance, and discloses a detachable roller shutter door wind resistance device which comprises a roller shutter cover, a motor is mounted on one side of the outer wall of the roller shutter cover, a mounting frame is mounted on one sides of two supporting rails, and a plurality of protection strips are slidably connected between the inner walls of two first sliding grooves. And storage grooves are formed in the two sides of the top of each protection strip, the inner wall of each second sliding groove is slidably connected with a limiting sliding block, and the inner wall of each limiting sliding block is rotationally connected with a connecting rod. When the traction strip descends, the protection strips fall down one by one, and finally all the protection strips are distributed and supported on the rear side of the roller shutter door body; when the roller shutter door body is opened in the later period, under the supporting and jacking action of the limiting blocks, the protection strips are sequentially overlapped and combined, the limiting sliding blocks slide in the second sliding grooves, so that the connecting rods are rotationally stored in the storage grooves, the installation and storage efficiency of the wind-resistant device is improved, and meanwhile the operation burden of a user is relieved.

Description

Technical Field

[0001] This invention belongs to the technical field of wind-resistant roller shutter doors, and specifically relates to a detachable wind-resistant roller shutter door device. Background Technology

[0002] Roller shutters, a common door structure, are made up of multiple articulated panels connected in series. They can rotate up and down along a roller within a fixed track. Thanks to their unique design, roller shutters are widely used in commercial and industrial settings. They not only have excellent partitioning capabilities, effectively dividing different areas, but also good protective performance, ensuring the safety of goods and personnel within the premises. In addition, they are easy to operate, making them convenient for daily use.

[0003] In the current market environment, roller shutters are widely used in shops along various streets. These shops' entrances are located on either side of the street, in areas significantly affected by wind. Due to the street's unique geographical location, airflow easily forms vortices and accelerates, resulting in greater wind force on the shop entrances. Therefore, testing the wind resistance of roller shutters is crucial during their production process and requires rigorous experimental verification. With the rapid development of modern technology, the wind resistance function of roller shutters is constantly being optimized and improved. The wind-resistant structure at the top and related parts are continuously upgraded and improved, adopting more advanced design concepts and materials to enhance wind resistance performance. These upgrades enable roller shutter equipment to more stably protect the doors of each shop, effectively resist the invasion of strong winds, reduce the risk of damage caused by strong winds, and provide reliable protection for the normal operation of shops. It is evident that there is a very urgent practical need for the research and development and production of efficient and reliable wind-resistant roller shutter devices.

[0004] However, existing wind-resistant devices for roller shutters still have the following drawbacks during use: 1. Existing wind-resistant devices for roller shutters have a low degree of automation. Each time the roller shutter is pulled down, the user needs to manually support the wind-resistant device at the back of the roller shutter. Only when strong winds blow can the device effectively provide support at the back of the roller shutter and reduce the risk of deformation and damage. However, this protection method brings great inconvenience to the user. Not only does it require extra time and effort to manually install the wind-resistant device when pulling down the roller shutter, but it also requires manual storage of the device before opening the roller shutter. The whole operation process is cumbersome and complicated, which seriously affects the installation efficiency of the wind-resistant device and also increases the user's operating burden. 2. Existing wind-resistant devices for roller shutters typically need to be installed on the rear side of the roller shutter. During installation, various screws and other fasteners are often used for tightening and reinforcement to ensure the stability of the device; alternatively, the entire wind-resistant device is welded to the roller shutter frame, making it fixed and impossible to remove. However, this installation method causes great trouble when maintaining the roller shutter later. Because the device is firmly installed and difficult to disassemble, maintenance personnel need to spend a lot of time and effort to handle the wind-resistant device when inspecting and repairing the roller shutter, which is very inconvenient and increases maintenance costs and time.

[0005] Therefore, it is necessary to invent a detachable wind-resistant device for roller shutter doors to solve the above problems. Summary of the Invention

[0006] To address the aforementioned problems, the present invention provides a detachable wind-resistant device for roller shutter doors, thereby solving the problems mentioned in the background art.

[0007] To achieve the above objectives, the present invention provides the following technical solution: a detachable roller shutter door wind-resistant device, comprising a roller shutter cover and two support rails, wherein an automatic wind-resistant mechanism, a quick disassembly and fixing mechanism, and a safety component are respectively installed between the two support rails, wherein the two support rails are fixedly installed on both sides of the bottom of the roller shutter cover, and the inner wall of one end of the two support rails is connected to the inner wall of both ends of the roller shutter cover. The automatic wind-resistant mechanism includes a roller shutter body installed inside the roller shutter cover. A motor is installed on one side of the outer wall of the roller shutter cover. A traction bar is fixedly provided at the bottom of the roller shutter body, and the traction bar is slidably connected between the inner walls of two support rails. Two limiting blocks are fixedly provided at the middle position of one side of the traction bar. An installation frame is installed on one side of the two support rails. A first sliding groove is provided on both sides of the inner wall of the installation frame. Multiple protective strips are slidably connected between the inner walls of the two first sliding grooves. A storage groove is provided on both sides of the top of each protective strip. A second sliding groove is provided on both sides of the bottom of each protective strip and at both ends of the bottom of the inner wall of the installation frame. A limiting slider is slidably connected to the inner wall of each second sliding groove. A connecting rod is rotatably connected to the inner wall of each limiting slider, and one end of each connecting rod is rotatably connected to the inner wall of one end of each storage groove. Preferably, a rotating shaft is rotatably connected to the middle position of the inner wall of the roller shutter cover, and the main body of the roller shutter door is sleeved on the outer wall of the rotating shaft. One end of the rotating shaft passes through the outer wall of one side of the roller shutter cover and is fixedly connected to the output end of the motor. One end of the inner wall of the roller shutter cover is rotatably connected to a traction roller above the two support rails, and the outer wall of the main body of the roller shutter door is in contact with the outer wall of the traction roller.

[0008] Preferably, the quick assembly and disassembly fixing mechanism includes support blocks fixedly installed at the lower and upper edges of one side of the two support rails. Each of the four support blocks has a telescopic groove on one side of its top. Each of the four telescopic grooves has an inclined block inserted through its inner wall. Each of the four telescopic grooves has multiple buffer holes at equal intervals on one side of its inner wall.

[0009] Preferably, multiple connecting shafts are fixedly provided at equal distances at the bottom of the four inclined blocks, and the outer wall of each connecting shaft is inserted and connected to the inner wall of each buffer hole. A first spring is sleeved on the outer wall of one end of each connecting shaft, and the two ends of each first spring are fixedly connected to one side of the four inclined blocks and one side of the inner wall of the telescopic groove.

[0010] Preferably, a limiting groove is provided at the lower edge of both sides of the outer wall of the mounting bracket, wherein a positioning plate is fixedly provided at the edge of the two lower support blocks on the top side, and the outer wall of the two positioning plates is interlocked with the inner wall of the two limiting grooves.

[0011] Preferably, the safety assembly includes an electric cylinder fixedly installed on one side of two positioning plates. The output ends of the two electric cylinders are connected to a push shaft. A through groove is provided at the lower edge of both sides of the mounting bracket. The outer walls of the two push shafts are respectively connected to the inner walls of the two through grooves. One of the lowermost protective strips has a storage hole at both ends.

[0012] Preferably, a limiting rod is inserted through the inner wall of each of the two storage holes, and a second spring is fixedly provided on one side of the inner wall of each of the two storage holes. One end of each of the two second springs is fixedly connected to one end of each of the two limiting rods, and a ball bearing is rotatably connected to the other end of each of the two limiting rods.

[0013] Preferably, a control switch is installed on one side of one of the support rails, and the motor and the electric cylinder are electrically connected to an external power source through the control switch.

[0014] The technical effects and advantages of this invention are as follows: 1. In this invention, the mounting bracket is installed on the rear side of the support rail via a quick-release fixing mechanism. During the lifting and lowering of the traction bar, the limiting block on its rear side always supports the bottom of the lowest protective bar. Therefore, when the traction bar descends, the limiting block causes the protective bars to fall one by one. The upper protective bars rotate in the receiving groove via a connecting rod, one end of which pulls the limiting slider to slide in the second groove at the bottom of each protective bar. This causes the connecting rod to rotate until the limiting slider can no longer slide, at which point the protective bar connected to the connecting rod reaches a fixed position. Then, the traction bar continues to descend, and the lower protective bars repeat the process. The protective strips are sequentially connected and supported at fixed positions via connecting rods, ultimately distributing and supporting all the protective strips on the rear side of the roller shutter body for wind resistance. When the roller shutter body is opened later, the protective strips are stacked and merged sequentially under the support of the limiting block, and the connecting rods are rotated and stored in the storage groove by the limiting slider in the second slide groove. They are then supported and stored on the top of the mounting frame, without affecting the opening and closing of the roller shutter. This eliminates the need for manual installation and storage by staff, improving the efficiency of wind-resistant device installation and storage, while also reducing the user's operational burden. 2. In this invention, when installing the wind-resistant device, the mounting frame is pressed against four support blocks, and the mounting frame is pressed forcefully to compress the four inclined blocks, causing it to descend into the telescopic groove. When the entire device is retracted into the telescopic groove, the mounting frame is pressed into contact with two support rails. At this time, the mounting frame is located on the rear side of the telescopic groove. After the compression is released, the inclined blocks quickly pop out of the telescopic groove under the elastic action of the first spring, blocking the outside of the mounting frame. At this time, the side in contact with the mounting frame is the vertical side, and the mounting frame cannot detach itself from the fixation of the four inclined blocks. When disassembling later, it is only necessary to press down the two lower inclined blocks to retract them into the telescopic groove, and the mounting frame can be disassembled at an angle. There is no need to use too many screws or other fasteners for fixation, nor is welding required, which facilitates disassembly and assembly during later maintenance, thereby improving the convenience of the device and reducing maintenance costs and time.

[0015] Other features and advantages of the invention will be set forth in the description which follows, and will be apparent in part from the description, or may be learned by practicing the invention. The objects and other advantages of the invention may be realized and obtained by means of the structures pointed out in the description, claims and drawings. Attached Figure Description

[0016] To more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0017] Figure 1This is a schematic diagram of the back of the invention; Figure 2 This is a schematic diagram of the front of the invention; Figure 3 This is a schematic diagram of the connection between the roller shutter cover and the support track of the present invention; Figure 4 This is a schematic diagram of the automatic wind-resistant mechanism of the present invention; Figure 5 This is a schematic diagram showing the interconnection of the protective strips of the present invention; Figure 6 This is a schematic diagram of the quick assembly and disassembly fixing mechanism of the present invention; Figure 7 This is a schematic diagram of the insurance component of the present invention; Figure 8 This is an appendix to the specification of this invention. Figure 7 A magnified diagram of point A in the middle.

[0018] In the diagram: 1. Roller shutter cover; 2. Support track; 3. Automatic wind-resistant mechanism; 301. Roller shutter body; 302. Motor; 303. Traction bar; 304. Limiting block; 305. Mounting bracket; 306. First slide groove; 307. Protective strip; 308. Storage groove; 309. Second slide groove; 310. Limiting slider; 311. Connecting rod; 312. Rotating shaft; 313. Traction roller; 4. Quick disassembly and fixing mechanism; 401. Support block; 402. Telescopic groove; 403. Inclined block; 404. Buffer hole; 405. Connecting shaft; 406. First spring; 5. Limiting groove; 6. Positioning plate; 7. Safety component; 701. Electric cylinder; 702. Push shaft; 703. Through groove; 704. Storage hole; 705. Limiting rod; 706. Second spring; 707. Ball bearing. Detailed Implementation

[0019] To make the objectives, technical solutions, and advantages of the embodiments of the present invention clearer, the technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0020] This invention provides, for example Figure 1-8 The detachable wind-resistant device for a roller shutter door shown includes a roller shutter cover 1 and two support rails 2. The device is characterized in that an automatic wind-resistant mechanism 3, a quick disassembly and fixing mechanism 4, and a safety component 7 are respectively installed between the two support rails 2. The two support rails 2 are fixedly installed on both sides of the bottom of the roller shutter cover 1, and the inner wall of one end of the two support rails 2 is connected to the inner wall of both ends of the roller shutter cover 1. The automatic wind-resistant mechanism 3 includes a roller shutter body 301 installed inside the roller shutter cover 1. A motor 302 is installed on one side of the outer wall of the roller shutter cover 1. A traction strip 303 is fixedly provided at the bottom of the roller shutter body 301, and the traction strip 303 is slidably connected between the inner walls of two support rails 2. Two limit blocks 304 are fixedly provided at the middle position of one side of the traction strip 303. A mounting bracket 305 is installed on one side of the two support rails 2. The inner walls of the mounting bracket 305 are provided with first sliding grooves 306 on both sides. Multiple protective strips 307 are slidably connected between the inner walls of 06. Each protective strip 307 has a storage groove 308 on both sides of the top. Each protective strip 307 has a second sliding groove 309 on both sides of the bottom and at both ends of the bottom of the inner wall of the mounting bracket 305. Each second sliding groove 309 has a limit slider 310 slidably connected to the inner wall. Each limit slider 310 has a connecting rod 311 rotatably connected to the inner wall of one end of each storage groove 308. In use, the motor 302 drives the roller shutter body 301 to slide up and down between the roller shutter cover 1 and the support rail 2. During the sliding process, the traction bar 303 is always pulled from below the roller shutter body 301, and the mounting bracket 305 is installed on the rear side of the support rail 2 through the quick-release fixing mechanism 4. As the traction bar 303 rises and falls, the limiting block 304 on its rear side is always supported at the bottom of the lowest protective bar 307. Therefore, when the traction bar 303 descends, it will cause the protective bars 307 to fall one by one through the limiting block 304. The upper protective bars 307 rotate in the storage groove 308 through the connecting rod 311. One end of the connecting rod 311 pulls the limiting slider 310 to slide in the second sliding groove 309 at the bottom of each protective bar 307, so that the connecting rod 311 rotates until the limiting slider 310 can no longer slide, and the connecting rod 311... The connecting protective strip 307 reaches a fixed position, and then the traction strip 303 continues to descend. The lower protective strip 307 repeats the steps of the upper protective strip 307 and reaches a fixed position in sequence. It is connected and supported by the connecting rod 311. Finally, all the protective strips 307 are distributed and supported on the rear side of the roller shutter body 301 to provide wind resistance. When the roller shutter body 301 is opened later, under the support and lifting action of the limiting block 304, the protective strips 307 are stacked and merged in sequence. The connecting rod 311 is rotated and stored in the storage groove 308 by the sliding of the limiting slider 310 in the second sliding groove 309. It is then supported and stored on the top of the mounting frame 305, which does not affect the opening and closing of the roller shutter. It also eliminates the need for manual installation and storage by the staff, improving the efficiency of wind-resistant device installation and storage, and reducing the user's operating burden.

[0021] A rotating shaft 312 is rotatably connected to the middle position of the inner wall of the roller shutter cover 1, and the roller shutter door body 301 is sleeved on the outer wall of the rotating shaft 312. One end of the rotating shaft 312 passes through the outer wall of one side of the roller shutter cover 1 and is fixedly connected to the output end of the motor 302. One end of the inner wall of the roller shutter cover 1 is located above the two support rails 2 and is rotatably connected to the traction roller 313. The outer wall of the roller shutter door body 301 is in contact with the outer wall of the traction roller 313. When the roller shutter door body 301 is engaged, the motor 302 is started to drive the rotating shaft 312 to rotate, thereby laying the roller shutter door body 301 so that it can stably rise and fall and slide in the inner wall of the support rails 2 under the traction of the traction roller 313. Furthermore, the quick-release and fixing mechanism 4 includes support blocks 401 fixedly installed on the lower and upper edges of one side of the two support rails 2. Each of the four support blocks 401 has a telescopic groove 402 on one side of its top. Each of the four telescopic grooves 402 has an inclined block 403 inserted through its inner wall. Each of the four telescopic grooves 402 has multiple buffer holes 404 at equal intervals on one side of its inner wall. The inclined block 403 has an inclined surface on the side facing outward. When the mounting bracket 305 is inserted between the four support blocks 401, it can be pressed into the telescopic groove 402 by pressing it with force along the inclined surface of the inclined block 403.

[0022] Multiple connecting shafts 405 are fixedly mounted at equal intervals at the bottom of the four inclined blocks 403. The outer wall of each connecting shaft 405 is inserted and connected to the inner wall of each buffer hole 404. A first spring 406 is sleeved on the outer wall of one end of each connecting shaft 405. The two ends of each first spring 406 are fixedly connected to one side of the four inclined blocks 403 and one side of the inner wall of the telescopic groove 402, respectively. When installing the wind-resistant device, the mounting frame 305 is pressed against the four support blocks 401, and the mounting frame 305 is pressed forcefully to press the four inclined blocks 403, thereby pressing them down into the telescopic groove 402. When the entire device is retracted into the telescopic groove 402, the mounting frame 305 can be squeezed out. When the two support rails 2 are pressed together, the mounting bracket 305 is located behind the telescopic groove 402. After the compression is released, the inclined block 403 quickly pops out of the telescopic groove 402 under the elastic action of the first spring 406 and blocks the outside of the mounting bracket 305. At this time, the side in contact with the mounting bracket 305 is the vertical side. The mounting bracket 305 cannot detach itself from the fixation of the four inclined blocks 403. When removing it later, you only need to press the two inclined blocks 403 at the bottom to make them retract into the telescopic groove 402, and the mounting bracket 305 can be removed at an angle. There is no need to use too many screws or other fasteners for fixation, nor is welding required. This makes it convenient to disassemble and assemble during later maintenance, thereby improving the convenience of using the device. Furthermore, limiting grooves 5 are provided on the lower edges of both sides of the outer wall of the mounting bracket 305. Positioning plates 6 are fixedly provided on the two edges located on the top side of the lower support block 401. The outer walls of the two positioning plates 6 are interlocked with the inner walls of the two limiting grooves 5. When the mounting bracket 305 is installed, the positioning plates 6 are inserted into the limiting grooves 5 and then the mounting bracket 305 is squeezed and installed, so that the two sides are blocked. This makes it easy to accurately position during use and prevents it from shifting. Furthermore, the safety component 7 includes an electric cylinder 701 fixedly installed on one side of the two positioning plates 6. The output ends of the two electric cylinders 701 are connected to push shafts 702. The lower edges of both sides of the mounting bracket 305 are provided with through slots 703, and the outer walls of the two push shafts 702 are respectively connected to the inner walls of the two through slots 703. One of them has storage holes 704 at both ends of the bottom protective strip 307. When the mounting bracket 305 is installed on the rear side of the support rail 2, the inner walls of the through slots 703 at both ends are aligned with the output ends of the electric cylinders 701, so that the push shafts 702 can be pushed into the through slots 703.

[0023] Limiting rods 705 are inserted into the inner walls of both storage holes 704. A second spring 706 is fixedly installed on one side of the inner wall of each storage hole 704. One end of each second spring 706 is fixedly connected to one end of each limiting rod 705. A ball bearing 707 is rotatably connected to the other end of each limiting rod 705. During the descent of the roller shutter body 301, after the shutter reaches its lowest point, storage holes 704 are formed at both ends of the bottom protective strip 307. These holes are connected to the limiting rods 705 via the second springs 706. A ball bearing 707 is rotatably connected to one end of each limiting rod 705. When the protective strip 307 descends, the ball bearing 707 rolls against the inner wall of the first sliding groove 306. This allows the roller shutter to descend smoothly. When it reaches its lowest point, the inner wall of the receiving hole 704 connects with the inner wall of the through groove 703. Under the elastic action of the second spring 706, the limiting rod 705 is pushed into the through groove 703, thereby fixing the bottom protective strip 307. This prevents the roller shutter from opening even if it malfunctions and cannot be fixed, as the bottom protective strip 307 limits the limiting block 304. When the roller shutter needs to be opened later, the electric cylinder 701 is activated, causing the push shaft 702 to push the ball bearing 707, which in turn pushes the limiting rod 705 to compress the second spring 706 and push it back. Once it is pushed out of the through groove 703, the fixing of the protective strip 307 can be released, and the roller shutter body 301 can be opened.

[0024] Although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some of the technical features; and these modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the spirit and scope of the technical solutions of the embodiments of the present invention.

Claims

1. A detachable roller shutter door wind-resistant device, comprising a roller shutter cover (1) and two support tracks (2), characterized in that: An automatic wind-resistant mechanism (3), a quick-release and fixing mechanism (4), and a safety component (7) are respectively installed between the two support rails (2). The two support rails (2) are fixedly installed on both sides of the bottom of the roller shutter cover (1), and the inner wall of one end of the two support rails (2) is connected to the inner wall of both ends of the roller shutter cover (1). The automatic wind-resistant mechanism (3) includes a roller shutter body (301) installed inside the roller shutter cover (1). A motor (302) is installed on one side of the outer wall of the roller shutter cover (1). A traction bar (303) is fixedly provided at the bottom of the roller shutter body (301), and the traction bar (303) is slidably connected between the inner walls of two support rails (2). Two limiting blocks (304) are fixedly provided at the middle position on one side of the traction bar (303). A mounting bracket (305) is installed on one side of the two support rails (2). A first sliding groove (306) is opened on both sides of the inner wall of the mounting bracket (305). Multiple protective strips (307) are slidably connected between the inner walls of the first slide groove (306). Each protective strip (307) has a storage groove (308) on both sides of its top. Each protective strip (307) has a second slide groove (309) on both sides of its bottom and at both ends of the bottom of the inner wall of the mounting bracket (305). Each second slide groove (309) has a limit slider (310) slidably connected to its inner wall. Each limit slider (310) has a connecting rod (311) rotatably connected to its inner wall. One end of each connecting rod (311) is rotatably connected to the inner wall of one end of each storage groove (308).

2. The detachable roller shutter door wind-resistant device according to claim 1, characterized in that: A rotating shaft (312) is rotatably connected to the middle position of the inner wall of the roller shutter cover (1), and the roller shutter door body (301) is sleeved on the outer wall of the rotating shaft (312). One end of the rotating shaft (312) passes through the outer wall of one side of the roller shutter cover (1) and is fixedly connected to the output end of the motor (302). One end of the inner wall of the roller shutter cover (1) is located above the two support rails (2) and is rotatably connected to a traction roller (313), and the outer wall of the roller shutter door body (301) is in contact with the outer wall of the traction roller (313).

3. The detachable wind-resistant device for a roller shutter door according to claim 1, characterized in that: The quick assembly and disassembly fixing mechanism (4) includes a support block (401) fixedly installed on the lower and upper edges of one side of the two support rails (2). Each of the four support blocks (401) has a telescopic groove (402) on one side of its top. Each of the four telescopic grooves (402) has an inclined block (403) inserted through its inner wall. Each of the four telescopic grooves (402) has multiple buffer holes (404) at equal intervals on one side of its inner wall.

4. The detachable roller shutter door wind-resistant device according to claim 3, characterized in that: The bottom of each of the four inclined blocks (403) is fixedly provided with multiple connecting shafts (405) at equal distances, and the outer wall of each connecting shaft (405) is inserted and connected to the inner wall of each buffer hole (404). A first spring (406) is sleeved on the outer wall of one end of each connecting shaft (405), and the two ends of each first spring (406) are fixedly connected to one side of the four inclined blocks (403) and one side of the inner wall of the telescopic groove (402).

5. A detachable wind-resistant device for a roller shutter door according to claim 1, characterized in that: Limiting grooves (5) are provided on the lower edges of both sides of the outer wall of the mounting bracket (305). Positioning plates (6) are fixedly provided on the edges of the two lower support blocks (401) on the top side. The outer walls of the two positioning plates (6) are interlocked with the inner walls of the two limiting grooves (5).

6. A detachable wind-resistant device for a roller shutter door according to claim 1, characterized in that: The safety component (7) includes an electric cylinder (701) fixedly installed on one side of two positioning plates (6). The output ends of the two electric cylinders (701) are connected to a push shaft (702). The lower edges of both sides of the mounting bracket (305) are provided with through slots (703). The outer walls of the two push shafts (702) are respectively connected to the inner walls of the two through slots (703). One of the lowermost protective strips (307) is provided with a storage hole (704) at both ends.

7. A detachable wind-resistant device for a roller shutter door according to claim 6, characterized in that: Limiting rods (705) are inserted through the inner walls of the two storage holes (704). A second spring (706) is fixedly provided on one side of the inner wall of the two storage holes (704). One end of the two second springs (706) is fixedly connected to one end of the two limiting rods (705), and the other end of the two limiting rods (705) is rotatably connected to a ball (707).

8. A detachable wind-resistant device for a roller shutter door according to claim 1, characterized in that: One of the support rails (2) is equipped with a control switch on one side, and the motor (302) and the electric cylinder (701) are electrically connected to an external power source through the control switch.

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