Anti-falling device of roller shutter door

Abstract

The utility model relates to the field of roller shutter door protection devices, and discloses an anti-falling device of a roller shutter door, which comprises two door posts, the door posts are arranged on a door frame and used for installing the roller shutter door, the opposite sides of the two door posts are respectively and fixedly connected with a clamping block plate, the opposite sides of the two clamping block plates are respectively provided with a plurality of limiting blocks and a telescopic structure, and the limiting blocks are arranged on the limiting blocks. The telescopic structure is arranged on one side of the door post and used for stretching out and drawing back, the telescopic structure comprises a short rod, a positive screw rod, a negative screw rod and moving blocks, one end of the short rod is fixedly connected with one end of the positive screw rod, the other end of the short rod is fixedly connected with one end of the negative screw rod, and the other end of the short rod and the other end of the negative screw rod are each provided with one moving block and a buckle structure. The buckle structure is arranged on one side of the door post, when the two movable blocks drive the two buckles to be clamped with the limiting blocks at the corresponding positions, the bottom of the roller shutter door is clamped and fixed, even if the door sheet is broken, the two sides of the bottom of the roller shutter door cannot fall off due to clamping, and the stability is high.

Description

Technical Field

[0001] The utility model belongs to the field of rolling shutter door protection devices, and in particular relates to an anti-falling device for rolling shutter doors. Background Art

[0002] Rolling shutter doors are very commonly used, but they may fall and endanger the safety of passers-by. It is very important to install anti-fall devices for rolling shutter doors.

[0003] The prior art discloses a device for preventing the door curtain of a rolling door from falling (CN202120138256.4), which includes an anti-falling swing arm, a connecting shaft and a torsion spring. The connecting shaft is fixed to a fixed plate connecting the transmission sprocket and the drive sprocket, and the torsion spring and the anti-falling swing arm are both sleeved on the connecting shaft. The anti-falling swing arm has a hook portion and a connecting portion, the end of the hook portion forms a curved hook, and the end of the connecting portion is connected to a rotatable roller. When the chain is loose or broken, the door curtain falls and drives the transmission sprocket to rotate. At this time, the roller on the connecting portion of the anti-falling swing arm loses the restriction of the chain, causing the anti-falling swing arm to twist toward one side of the transmission sprocket under the elastic force of the torsion spring, thereby causing the hook of the hook portion to embed into the tooth groove of the transmission sprocket, thereby limiting the jamming of the transmission sprocket, making the transmission sprocket unable to rotate, and thus making the door shaft of the rolling door unable to rotate, ultimately achieving the effect of preventing the door curtain from falling under its own gravity.

[0004] The existing technology can limit the jamming of the drive sprocket by the anti-fall swing arm so that the door shaft of the rolling shutter door cannot rotate, thereby achieving the anti-fall effect. However, the existing technology only prevents the rolling shutter door from falling due to the rotation of the door shaft, but the door leaf of the door curtain may also break due to the large hook position, causing the rolling shutter door to fall.

[0005] In view of this, the present utility model is proposed. Utility Model Content

[0006] In order to solve the technical problem that the above-mentioned prior art does not solve the problem that the rolling door falls due to the door sheet breaking, the basic concept of the technical solution adopted by the present utility model is:

[0007] A rolling door anti-falling device includes a door post, which is arranged on a door frame for mounting the rolling door, and has two door posts. A clamping plate is fixedly connected to each of the opposite sides of the two door posts, and a plurality of limit blocks are arranged on each of the opposite sides of the two clamping plates.

[0008] The telescopic structure is arranged on one side of the door post for telescopic extension and retraction, and the telescopic structure includes a short rod, a positive screw rod, a negative screw rod and a moving block, one end of the short rod is fixedly connected to one end of the positive screw rod, and the other end of the short rod is fixedly connected to one end of the negative screw rod, and the other end of the short rod and the negative screw rod are each provided with a moving block;

[0009] The buckle structure is arranged on one side of the door post and is used to clamp the rolling door. The buckle structure includes a limit block, a buckle, a connecting block, a connecting rod, and a rotating rod. A rotating groove is provided on one side of the connecting block. The two ends of the rotating rod are rotatably connected to one side of the rotating groove. The connecting rod is rotatably connected to the rotating rod, and the bottom surface of the buckle is fixedly connected to the top surface of the connecting rod.

[0010] As a preferred embodiment of the present invention, the snap-fit ​​structure also includes a spring, a spring is provided at one end of the connecting rod and the top surface of the connecting rod, one end of the two springs is fixedly connected to the connecting rod, and the other end of the connecting rod is fixedly connected to the rotating groove.

[0011] As a preferred embodiment of the present invention, a rolling shutter door is also provided between the two door posts, and threaded holes are provided on the opposite sides of the two moving blocks. The other ends of the positive screw rod and the negative screw rod each pass through a threaded hole and are threadedly connected to the threaded holes.

[0012] As a preferred embodiment of the present invention, there are two groups of snap-fit ​​structures, which are respectively arranged on one side of the positive screw rod and the negative screw rod, and the bottom surfaces of the two connecting blocks are respectively fixedly connected to the top surface of a moving block.

[0013] As a preferred embodiment of the present invention, the snap-fit ​​structure also includes a fixed block and a second servo motor, one side of the two connecting blocks is fixedly connected to a fixed block respectively, and the other side of the two connecting blocks is fixedly provided with a second servo motor respectively, and the rotating shafts of the two second servo motors respectively pass through one side of the connecting block and are fixedly connected to one end of the corresponding rotating rod.

[0014] As a preferred embodiment of the present invention, one end of the limit block is fixedly connected to one side of the clamping plate, and the other end of the limit block is inclined upward.

[0015] As a preferred embodiment of the present invention, the telescopic structure also includes a first gear, a second gear and a first servo motor. The short rod passes through the center of the first gear and is fixedly connected to the first gear. The second gear is engaged with the first gear. The rotating shaft of the first servo motor is fixedly connected to one side of the second gear. The first servo motor is fixed to one side of the rolling door through a bracket.

[0016] As a preferred embodiment of the present invention, a sliding groove is respectively provided on one side of the rolling door near the positive screw rod and the reverse screw rod, and the two fixing blocks are respectively slidably connected to a sliding groove.

[0017] Compared with the prior art, the present invention has the following beneficial effects:

[0018] 1. When the two moving blocks drive the two buckles to engage with the limit blocks at the corresponding positions, the bottom of the rolling shutter door is locked and fixed. Even if the door sheet breaks, the two sides of the bottom of the rolling shutter door will not fall due to being locked, and the stability is strong.

[0019] 2. The buckle does not affect the rising of the rolling door, which is more convenient and does not require repeated movement of blocks. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] In the attached figure:

[0021] Figure 1 This is a schematic diagram of the overall structure of the utility model;

[0022] Figure 2 This is a schematic diagram of the telescopic structure of the utility model;

[0023] Figure 3 This is a schematic diagram of the structure of the limit block of the utility model;

[0024] Figure 4 This is a schematic diagram of the buckle structure of the utility model;

[0025] Figure 5 It is a partial schematic diagram of the buckle structure of the utility model.

[0026] In the figure: 1. Doorpost; 2. Block plate; 3. Limit block; 4. Rolling door; 5. Positive screw; 6. First gear; 7. Second gear; 8. First servo motor; 9. Negative screw; 10. Buckle; 11. Connecting block; 12. Moving block; 13. Connecting rod; 14. Second servo motor; 15. Rotating rod; 16. Spring; 17. Sliding groove; 18. Fixed block; 19. Threaded hole; 20. Short rod. DETAILED DESCRIPTION

[0027] In order to make the purpose, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. The following embodiments are used to illustrate the present invention.

[0028] An anti-falling device for a rolling door, such as Figure 1 、 Figure 2 and Figure 3As shown, the door post 1 is set on the door frame for installing a rolling door. There are two door posts 1, and each opposite side of the two door posts 1 is fixedly connected to a card block plate 2. The two card block plates 2 are each provided with a number of limit blocks 3 on the opposite side. The telescopic structure is provided on one side of the door post 1 for telescoping. The telescopic structure includes a short rod 20, a positive screw rod 5, a negative screw rod 9 and a moving block 12. One end of the short rod 20 is fixedly connected to one end of the positive screw rod 5, and the other end of the short rod 20 is fixedly connected to one end of the negative screw rod 9. The other end of the short rod 20 and the negative screw rod 9 are each provided with a moving block 12. A rolling door 4 is also provided in the middle of the two door posts 1, and the two moving blocks 12 are relative to each other. A threaded hole 19 is provided on one side of the rolling door 4, and the other end of the positive screw rod 5 and the negative screw rod 9 each passes through a threaded hole 19 and is threadedly connected to the threaded hole 19. The telescopic structure also includes a first gear 6, a second gear 7 and a first servo motor 8. The short rod 20 passes through the center of the first gear 6 and is fixedly connected to the first gear 6. The second gear 7 is engaged with the first gear 6. The rotating shaft of the first servo motor 8 is fixedly connected to one side of the second gear 7. The first servo motor 8 is fixed to one side of the rolling door 4 through a bracket. A sliding groove 17 is provided on one side of the rolling door 4 near the positive screw rod 5 and the negative screw rod 9, and two fixed blocks 18 are each slidably connected to a sliding groove 17.

[0029] When the rolling door needs to be opened at a fixed height, the power supply of the first servo motor 8 is turned on. The first servo motor 8 is a forward and reverse servo motor. The rotating shaft of the first servo motor 8 drives the second gear 7 to rotate, and the second gear 7 drives the first gear 6 to rotate. The first gear 6 drives the short rod 20, the positive screw rod 5 and the reverse screw rod 9 to rotate, and the two moving blocks 12 move in the direction of the two limit blocks 3 respectively.

[0030] An anti-falling device for a rolling door, such as Figure 1 、 Figure 4 and Figure 5As shown, the buckle structure is arranged on one side of the door post 1 to clamp the rolling door. The buckle structure includes a limit block 3, a buckle 10, a connecting block 11, a connecting rod 13, and a rotating rod 15. A rotating groove is provided on one side of the connecting block 11. The two ends of the rotating rod 15 are respectively rotatably connected to one side of the rotating groove. The connecting rod 13 is rotatably connected to the rotating rod 15. The bottom surface of the buckle 10 is fixedly connected to the top surface of the connecting rod 13. The buckle structure also includes a spring 16. One end of the connecting rod 13 and the top surface of the connecting rod 13 are each provided with a spring 16. One end of the two springs 16 is fixedly connected to the connecting rod 13, and the other end of the connecting rod 13 is fixedly connected to the rotating groove. There are two groups of buckle structures. They are respectively arranged on one side of the positive screw rod 5 and the negative screw rod 9, and the bottom surfaces of the two connecting blocks 11 are fixedly connected to the top surface of a moving block 12. The snap-fit ​​structure also includes a fixed block 18 and a second servo motor 14. One side of the two connecting blocks 11 is fixedly connected to a fixed block 18, and the other side of the two connecting blocks 11 is respectively fixed with a second servo motor 14. The rotating shafts of the two second servo motors 14 pass through one side of the connecting block 11 and are fixedly connected to one end of the corresponding rotating rod 15. One end of the snap 10 is fixedly connected to one side of the block plate 2, and the other end of the limit block 3 is tilted obliquely upward. The rotating parts of the connecting rod 13 and the rotating rod 15 are provided with dampers.

[0031] When the shutter door 4 needs to be lifted up, the two moving blocks 12 drive the two buckles 10 to engage with the limit blocks 3 at the corresponding positions, and the bottom of the rolling shutter door 4 is locked and fixed. Even if the door sheet breaks, the two sides of the rolling shutter door 4 will not fall due to being locked, and the stability is strong. When the rolling shutter door 4 needs to continue to rise, there is no need to move the block 12. During the rising process, the upper part of the buckle 10 is squeezed by the limit block 3, and the buckle 10 is on the rotating rod 15 and pulls the spring. When the buckle 10 rises above the limit block 3, it continues to engage. When the shutter door needs to be closed, the two second servo motors 14 are turned on, the two second servo motors 14 drive the two rotating rods 15 to rotate, and the two buckles 10 are driven to disengage from the two limit blocks 3. Then the first servo motor 8 is started to rotate the rotating shaft in the opposite direction. The rotating shaft of the first servo motor 8 similarly moves the two buckles 10 towards the direction of the short rod 20, and the rolling shutter door can be lowered. The buckle 10 does not affect the rising of the shutter door 4, which is more convenient, and there is no need to repeatedly move the block 12.

[0032] The working principle of the present invention is as follows: when the rolling door needs to be opened at a fixed height, the power supply of the first servo motor 8 is turned on, the first servo motor 8 is a forward and reverse servo motor, the rotating shaft of the first servo motor 8 drives the second gear 7 to rotate, the second gear 7 drives the first gear 6 to rotate, the first gear 6 drives the short rod 20, the positive screw rod 5 and the reverse screw rod 9 to rotate, the two moving blocks 12 move toward the direction of the two limit blocks 3 respectively, when the two moving blocks 12 drive the two buckles 10 to engage with the limit blocks 3 at the corresponding positions, the bottom of the rolling door 4 is clamped and fixed, even if the door sheet breaks, the two sides of the bottom of the rolling door 4 will not fall due to being clamped, and the stability is strong, the rolling door 4 needs to continue When the shutter door is lowered, the buckle 10 does not affect the form of the shutter door 4, which is more convenient and does not need to be moved repeatedly.

[0033] It is understood that the present invention is described by way of certain embodiments, and those skilled in the art will appreciate that various changes or equivalent substitutions may be made to these features and embodiments without departing from the spirit and scope of the present invention. Furthermore, under the guidance of the present invention, these features and embodiments may be modified to suit specific circumstances and materials without departing from the spirit and scope of the present invention. Therefore, the present invention is not limited to the specific embodiments disclosed herein, and all embodiments falling within the scope of the claims of this application are intended to be protected by the present invention.

Claims

1. A rolling door anti-falling device, characterized in that: include A door post (1) is provided on a door frame for mounting a rolling door. There are two door posts (1). One card plate (2) is fixedly connected to each of the two door posts (1) on opposite sides. A plurality of limit blocks (3) are provided on each of the two card plates (2) on opposite sides. A telescopic structure is provided on one side of the door post (1) for telescoping, and comprises a short rod (20), a positive screw rod (5), a negative screw rod (9) and a moving block (12); one end of the short rod (20) is fixedly connected to one end of the positive screw rod (5), and the other end of the short rod (20) is fixedly connected to one end of the negative screw rod (9); and the other ends of the short rod (20) and the negative screw rod (9) are each provided with a moving block (12); A buckle structure is provided on one side of a door post (1) and is used to lock a rolling door. The buckle structure comprises a limit block (3), a buckle (10), a connecting block (11), a connecting rod (13), and a rotating rod (15). A rotating groove is provided on one side of the connecting block (11). Both ends of the rotating rod (15) are rotatably connected to one side of the rotating groove. The connecting rod (13) is rotatably connected to the rotating rod (15). The bottom surface of the buckle (10) is fixedly connected to the top surface of the connecting rod (13).

2. The anti-falling device for a rolling door according to claim 1, characterized in that: The buckle structure also includes a spring (16), one end of the connecting rod (13) and the top surface of the connecting rod (13) are each provided with a spring (16), one end of the two springs (16) is fixedly connected to the connecting rod (13), and the other end of the connecting rod (13) is fixedly connected to the rotating groove.

3. The anti-falling device for a rolling door according to claim 2, characterized in that: A rolling door (4) is also provided between the two doorposts (1), and threaded holes (19) are provided on opposite sides of the two moving blocks (12). The other ends of the positive screw rod (5) and the negative screw rod (9) respectively pass through a threaded hole (19) and are threadedly connected to the threaded hole (19).

4. The anti-falling device for a rolling door according to claim 3, characterized in that: There are two groups of snap-fit ​​structures, which are respectively arranged on one side of the positive screw rod (5) and the negative screw rod (9), and the bottom surfaces of the two connecting blocks (11) are respectively fixedly connected to the top surface of a moving block (12).

5. The anti-falling device for a rolling door according to claim 1, characterized in that: The buckle structure further comprises a fixed block (18) and a second servo motor (14); one side of the two connecting blocks (11) is fixedly connected to a fixed block (18) respectively; the other side of the two connecting blocks (11) is fixedly provided with a second servo motor (14); the rotating shafts of the two second servo motors (14) respectively pass through one side of the connecting block (11) and are fixedly connected to one end of the corresponding rotating rod (15).

6. The anti-falling device for a rolling door according to claim 1, characterized in that: One end of the limit block (3) is fixedly connected to one side of the clamping plate (2), and the other end of the limit block (3) is inclined obliquely upward.

7. The anti-falling device for a rolling door according to claim 3, characterized in that: The telescopic structure further comprises a first gear (6), a second gear (7) and a first servo motor (8); a short rod (20) passes through the center of the first gear (6) and is fixedly connected to the first gear (6); the second gear (7) is meshed with the first gear (6); a rotating shaft of the first servo motor (8) is fixedly connected to one side of the second gear (7); and the first servo motor (8) is fixedly mounted on one side of the rolling door (4) via a bracket.

8. The anti-falling device for a rolling door according to claim 5, characterized in that: A sliding groove (17) is respectively provided on one side of the rolling shutter door (4) near the positive screw rod (5) and the reverse screw rod (9), and two fixing blocks (18) are respectively slidably connected to a sliding groove (17).

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