Fireproof rolling shutter door with compensation function

Abstract

The utility model relates to the technical field of fire-fighting equipment, and discloses a fireproof rolling shutter door with a compensation function, which comprises a first end plate, a winding drum, curtain cloth and a track, the winding drum is in transmission connection with a motor, a first sealing strip is fixedly arranged on a lintel of a fireproof door, one side of the first end plate is in sliding connection with a sliding plate, and the winding drum is rotationally connected with the sliding plate. The end of the winding drum is coaxially and fixedly connected with a worm disc, the screw pitch of the worm disc is equal to the thickness of the curtain cloth, the first end plate is fixedly connected with a pin, the pin is inserted into a spiral groove of the worm disc, and the spiral direction of the spiral groove is consistent with the winding direction of the curtain cloth. When the motor drives the winding drum to rotate, the worm disc is driven to rotate at the same time, under the action of the pin, the worm disc and the winding drum horizontally move, the total thickness variation of the curtain cloth wound on the winding drum can be compensated, and therefore it is guaranteed that the curtain cloth enters the corresponding rails in the vertical direction all the time after being unwound from a rolled curtain cloth roll. The curtain cloth is prevented from being clamped at the top of the rail, and normal opening and closing of the roller shutter door are guaranteed.

Description

Technical Field

[0001] This utility model relates to the field of fire protection facilities technology, and in particular to a fireproof rolling shutter door with compensation function. Background Technology

[0002] Existing fire-resistant roller shutters all use a fixed roller structure with a curtain wound on the roller. Because the roller rotates in a fixed position and the length of the curtain wound on the roller is different when the roller shutter is open or closed (or rather, the different lengths of the curtain wound on the roller in these two states result in different overall thicknesses of the rolled-up curtain), the curtain cannot always enter the track in a vertical position. This causes the force on the curtain at the top of the track to be not vertical, but at an angle to the track. This angle changes during the opening and closing of the roller shutter, causing contact friction between the curtain and the top of the track. This can easily lead to jamming at this position, preventing the roller shutter from opening or closing properly.

[0003] In addition, when the span of the roller shutter door is large (such as exceeding 3 meters), the load will be very large (due to the weight of the curtain or curtain panel itself). As a result, the two ends of the curtain at the top of the track are supported by the track, while the middle is unsupported and will sag under the action of gravity. This will increase the gap between the middle of the curtain and the lintel of the fireproof roller shutter door at this point, making it impossible to seal properly and creating a great risk of smoke leakage. The fatality rate of toxic smoke in fires is as high as 50%-80%, so there is a great safety hazard.

[0004] Patent CN221400291U discloses a miniature fireproof automatic roller shutter, comprising a roller fixedly installed at the top of a passage, fireproof cloth wound on the roller, tracks installed on the side walls of the passage, and the fireproof cloth embedded in the tracks on both sides; a counterweight is attached to the bottom of the fireproof cloth, conforming to the shape of the passage floor; a thermosensitive fuse is provided at the roller, which controls the release of the roller. It uses the thermosensitive fuse as a one-time switch; when the thermosensitive fuse senses that the ambient temperature has risen to a predetermined temperature, it fuses and releases the fireproof cloth to descend. Under the action of the counterweight and its own weight, the fireproof cloth quickly falls to block the passage opening and prevent the spread of fire. However, as the fireproof cloth descends, the angle between the portion of the fireproof cloth between the top of the track and the roller gradually increases, thus gradually increasing the resistance experienced by the fireproof cloth, creating a potential risk of the fireproof cloth getting stuck. Utility Model Content

[0005] The technical problem to be solved by this utility model is to provide a fireproof rolling shutter door with a compensation function, which solves the problem that the curtain of the current fireproof rolling shutter door is easy to get stuck at the top of the track.

[0006] To solve the above-mentioned technical problems, the technical solution adopted by this utility model is as follows:

[0007] A fireproof rolling shutter door with compensation function includes a first end plate fixedly connected to the lintel of the fireproof door, a roller mounted on the first end plate, a curtain rolled on the roller, and a vertical track fixedly connected to the door frame of the fireproof door. One end of the curtain is fixedly connected to the roller, and the other end extends vertically into the track. The roller is driven by a motor. A first sealing strip is fixedly mounted on the lintel and abuts against the curtain. A sliding plate is slidably connected to one side of the first end plate. The roller is rotatably connected to the sliding plate. A worm gear is coaxially fixedly connected to the end of the roller. The pitch of the worm gear is equal to the thickness of the curtain. A pin is fixedly connected to the first end plate and inserted into the spiral groove of the worm gear. The spiral direction of the spiral groove is consistent with the winding direction of the curtain.

[0008] Furthermore, the worm gear is disposed between the drum and the first end plate, and a second end plate is provided on the side of the first end plate away from the worm gear. The second end plate and the first end plate are fitted with a clearance. The slide plate is disposed between the first end plate and the second end plate. A spacer pin is fixedly disposed between the first end plate and the second end plate. The slide plate is rectangular, and the spacer pins are arranged in two rows on the upper and lower sides of the slide plate. Each spacer pin is provided with a bearing, and the upper and lower sides of the slide plate abut against the corresponding bearings.

[0009] Furthermore, both the first end plate and the second end plate are fixedly connected to the pin. The slide plate is provided with a strip hole, which is consistent with the moving direction of the slide plate. The pin passes through the strip hole and is clearance-fitted with the strip hole.

[0010] Furthermore, the first end plate is close to the drum, the end of the drum is fixedly connected to a rotating shaft, the worm gear is fixedly connected to the rotating shaft, the rotating shaft is rotatably connected to the slide plate, the motor is set on the side of the slide plate close to the drum, and the first end plate is provided with clearance windows at positions corresponding to the motor and the rotating shaft.

[0011] Furthermore, the motor and the slide plate are fixedly connected by bolts that pass through the slide plate, and the second end plate is provided with clearance holes at positions corresponding to the bolts.

[0012] Furthermore, the rollers are two parallel rollers arranged from near to far on one side of the lintel, the curtains are two strips wound around the two rollers respectively, the ends of the two rollers are fixedly connected to driven sprockets, the worm gear is fixedly connected to one of the rollers, the output shaft of the motor is fixedly connected to a driving sprocket, and chains are wound around the two driven sprockets and the driving sprocket.

[0013] Furthermore, the first end plate is provided with a housing that is fixedly connected to the lintel. The motor, drive sprocket, driven sprocket, chain, worm gear, and curtain are all located inside the housing. The bottom of the housing is provided with an elongated through hole for the corresponding curtain to pass through. The side of the curtain near the lintel is sealed with the first sealing strip. The other side of the curtain and both sides of the curtain away from the lintel are sealed with the second sealing strip. The second sealing strip is fixedly connected to the housing.

[0014] The positive effects of this utility model are:

[0015] This invention comprises a first end plate, a sliding plate, a roller, a worm gear, and a pin. When the roller rotates, it drives the worm gear to rotate. Driven by the pin, the worm gear moves the roller, compensating for variations in the total thickness of the fabric rolled on the roller. This ensures that the fabric, after being unrolled from the roll, always enters the corresponding track vertically, preventing the fabric from getting stuck at the top of the track and ensuring the normal opening and closing of the roller shutter. Because the fabric always enters the guide rail vertically, even if the roller shutter has a large span, the middle of the fabric will not bend due to gravity, thus solving the problem of poor sealing between the lintel and the fabric, and greatly improving the safety performance of the fireproof roller shutter. Attached Figure Description

[0016] Figure 1 This is a perspective view of the present invention;

[0017] Figure 2 This is a perspective view of the disassembled utility model;

[0018] Figure 3 yes Figure 1 A cross-sectional view of the AA section;

[0019] Figure 4 This is a structural diagram of the internal components of the outer shell. Figure 1 ;

[0020] Figure 5 This is a structural diagram of the internal components of the outer shell. Figure 1 ;

[0021] Figure 6 yes Figure 5 Exploded view of the middle right section;

[0022] Figure 7 yes Figure 5 A sectional view of the middle right section;

[0023] In the picture:

[0024] 1. Mounting plate; 2. Track; 3. Housing; 4. Door lintel; 5. Door opening; 6. Door frame; 7. Curtain; 8. First sealing strip; 9. Roller drum; 10. Motor; 11. First end plate; 12. Worm gear; 13. Driven sprocket; 14. Chain; 15. Second sealing strip; 16. Second end plate; 17. Slide plate; 18. Pin; 19. Strip hole; 20. Spacer pin. Detailed Implementation

[0025] For ease of description, in the following description, the direction consistent with the drum 9 is "horizontal", and the direction perpendicular to the drum 9 in the horizontal plane is "vertical".

[0026] Example 1

[0027] like Figures 1 to 3 As shown, above the door opening 5 of the fire door is a lintel 4, and on the front and rear sides of the door opening 5 are door frames 6. Mounting plates 1 extend to the left on both sides of the door frames 6. A fire-resistant roller shutter door with a compensating function includes two parallel first end plates 11 vertically fixed to the left side of the lintel 4, two parallel horizontal rollers 9 positioned between the two first end plates 11, two rolls of curtain fabric 7 wound on the two rollers 9, and two pairs of vertical tracks 2 fixedly connected to the two mounting plates 1. The two first end plates 11 are symmetrically positioned at both ends of the rollers 9, and the two rollers 9 are arranged horizontally in the horizontal plane. One end of each roll of curtain fabric 7 is fixedly connected to the roller 9, and the other end extends into the corresponding pair of tracks 2.

[0028] Slide plates 17 are slidably connected to the outer sides of the two first end plates 11. The two ends of the two rollers 9 are rotatably connected to the corresponding slide plates 17. The two ends of the left roller 9 are coaxially fixedly connected to the worm gears 12. The two worm gears 12 are respectively set on the inner side of the corresponding first end plates 11. Pins 18 are fixedly connected to both first end plates 11. There are two pins 18 on each first end plate 11. The pins 18 are respectively inserted into the spiral grooves on the corresponding worm gears 12. The spiral grooves on the worm gears 12 form surface threads. The pitch of the worm gears 12 is equal to the thickness of the curtain fabric 7. The spiral direction of the spiral grooves is consistent with the winding direction of the curtain fabric 7.

[0029] A motor 10 is fixedly mounted on the rear sliding plate 17. Driven sprockets 13 are fixedly connected to the rear ends of both drums 9. The driven gear 13 on the left drum 9 is located between the corresponding worm gear 12 and the drum 9, while the driven gear 13 on the right drum 9 is located between the drum 9 and the rearmost first end plate 11. A drive sprocket is fixedly connected to the output shaft of the motor 10. Chains 14 are wound around the two driven sprockets 13 and the drive sprocket. A horizontal first sealing strip 8 is fixedly mounted on the left side of the lintel 4, abutting against the right side of the right-hand curtain 7.

[0030] The first end plate 11 is provided with a housing 3 that is fixedly connected to the lintel 4. The motor 10, the drive sprocket, the driven sprocket 13, the chain 14, the worm gear 12, and the curtain 7 are all located inside the housing 3. The bottom of the housing 3 is provided with a transverse elongated through hole for the corresponding curtain 7 to pass through. The left side of the right curtain 7 and both sides of the left curtain 7 are sealed with a second sealing strip 15, and the second sealing strip 15 is fixedly connected to the housing 3.

[0031] When the roller shutter door is opened, the motor 10 rotates clockwise, which drives the two rollers 9 and the curtain 7 rolled on the rollers 9 to rotate clockwise, so that the curtain 7 falls along the corresponding track 2 after being released from the rollers 9.

[0032] As the left-hand drum 9 rotates, it drives the worm gear 12 to rotate in the same direction at a constant angular velocity. Since the pitch of the worm gear 12 is equal to the thickness of the curtain fabric 7 (i.e., the pitch of the worm gear 12 is equal to the spacing between each layer of the curtain fabric 7 after it is rolled up), under the action of the pin 18, after the worm gear 12, the drum 9, and the curtain fabric 7 rolled on the drum 9 rotate one revolution simultaneously, the worm gear 12 drives the drum 9 to move a certain distance to the right longitudinally. This distance is equal to the pitch of the worm gear 12. Therefore, it can compensate for the change in the total thickness of the curtain fabric 7 rolled on the drum 9, thereby ensuring that the curtain fabric 7 always enters the corresponding track 2 vertically after being released from the rolled curtain fabric, preventing the curtain fabric 7 from getting stuck at the top of the track 2, and ensuring the normal closing of the roller shutter door.

[0033] Similarly, the motor 10 rotates counterclockwise, driving the drum 9 to rotate counterclockwise. At the same time, the drum 9 moves to the left along the longitudinal direction to compensate for the change in the total thickness of the curtain fabric 7 wound on the drum 9.

[0034] Since the curtain 7 always enters the guide rail 2 in a vertical state, even if the span of the roller shutter door is large (such as more than 3 meters), the middle position of the curtain 7 will not bend due to gravity, thus ensuring that all parts of the curtain 7 always maintain contact with the first sealing strip 8 and the second sealing strip 15, thereby ensuring the sealing performance of the roller shutter door and preventing smoke from leaking through the first sealing strip 8 and the second sealing strip 15 in the event of a fire.

[0035] Example 2

[0036] Combination Figures 4 to 7 As shown, the difference between this embodiment and Embodiment 1 is that:

[0037] Each first end plate 11 has a second end plate 16 arranged parallel to its outer surface. Each second end plate 16 and its corresponding first end plate 11 are in clearance fit. Each slide plate 17 is respectively disposed between its corresponding first end plate 11 and second end plate 16. A spacer pin 20 is fixedly disposed between each first end plate 11 and its corresponding second end plate 16. The slide plate 17 is rectangular. The spacer pins 20 are arranged in two rows on the upper and lower sides of the corresponding slide plate 17. Each spacer pin 20 is provided with a bearing. The upper and lower sides of the slide plate 17 abut against the corresponding bearings, thereby making the slide plate 17 slide more smoothly along the longitudinal direction of the first end plate 11.

[0038] Example 3

[0039] The difference between this embodiment and Embodiment 2 is that:

[0040] Each pin 18 is fixedly connected to the corresponding first end plate 11 and second end plate 16. The slide plate 17 is provided with a longitudinal strip hole 19 at the position of each pin 18. The pin 18 passes through the corresponding strip hole 19 and the pin 18 is clearance-fitted with the corresponding strip hole 19.

[0041] The slot 17 prevents the pin 18 from interfering with the slide plate 17 when the slide plate 17 is sliding.

[0042] Each drum 9 is fixedly connected to a rotating shaft at its end. The worm gear 12 and the driven gear 13 are fixedly connected to the corresponding rotating shafts. The rotating shafts are rotatably connected to the slide plate 17 via bearings. The motor 10 is located on the side of the slide plate 17 near the drum 9. The first end plate 11 has clearance windows at positions corresponding to the motor 10 and the rotating shafts.

[0043] The clearance window prevents interference between the slide plate 17 and the first end plate 11 when the slide plate 17 drives the motor 10 and the drum 9 to move longitudinally.

[0044] The motor 10 and the slide plate 17 are fixedly connected by three bolts that pass through the slide plate 17. The second end plate 16 has longitudinal strip-shaped clearance holes at positions corresponding to each bolt.

[0045] The clearance hole prevents the bolt from interfering with the second end plate 16 when the slide plate 17 moves longitudinally. It also makes it easy to tighten the bolt so that the motor 10 can be disassembled and repaired without removing the second end plate 16.

[0046] The above-described embodiments are detailed and specific, illustrating preferred embodiments of the present utility model. They are only used to illustrate the technical ideas and features of the present utility model, with the aim of enabling those skilled in the art to understand the content of the present utility model and implement it accordingly. However, they are not limited to the present utility model, and the patent scope of the present utility model cannot be limited by this embodiment alone. That is, any equivalent changes or modifications made to the spirit disclosed in the present utility model, without departing from the structure of the present utility model, such as local improvements within the system and modifications or transformations between subsystems, are still within the patent scope of the present utility model.

Claims

1. A fireproof rolling shutter door with compensation function, comprising a first end plate (11) fixedly connected to the lintel (4) of the fireproof door, a roller (9) disposed on the first end plate (11), a curtain (7) wound on the roller (9), and a vertical track (2) fixedly connected to the door frame (6) of the fireproof door, wherein one end of the curtain (7) is fixedly connected to the roller (9), and the other end extends vertically into the track (2), the roller (9) is drivenly connected to a motor (10), and a first sealing strip (8) is fixedly disposed on the lintel (4), the first sealing strip (8) abutting against the curtain (7), characterized in that, A sliding plate (17) is slidably connected to one side of the first end plate (11). The roller (9) is rotatably connected to the sliding plate (17). A worm gear (12) is coaxially fixedly connected to the end of the roller (9). The pitch of the worm gear (12) is equal to the thickness of the curtain (7). A pin (18) is fixedly connected to the first end plate (11). The pin (18) is inserted into the spiral groove of the worm gear (12). The spiral direction of the spiral groove is consistent with the winding direction of the curtain (7).

2. A fireproof rolling shutter door with compensation function according to claim 1, characterized in that, The worm gear (12) is disposed between the drum (9) and the first end plate (11). The side of the first end plate (11) away from the worm gear (12) is provided with a second end plate (16). The second end plate (16) and the first end plate (11) are in clearance fit. The slide plate (17) is disposed between the first end plate (11) and the second end plate (16). A spacer pin (20) is fixedly disposed between the first end plate (11) and the second end plate (16). The slide plate (17) is rectangular. The spacer pins (20) are arranged in two rows on the upper and lower sides of the slide plate (17). Each spacer pin (20) is provided with a bearing. The upper and lower sides of the slide plate (17) respectively abut against the corresponding bearings.

3. A fireproof rolling shutter door with compensation function according to claim 2, characterized in that, The first end plate (11) and the second end plate (16) are both fixedly connected to the pin (18). The slide plate (17) is provided with a strip hole (19). The strip hole (19) is in the same direction as the movement of the slide plate (17). The pin (18) passes through the strip hole (19). The pin (18) and the strip hole (19) are in clearance fit.

4. A fireproof rolling shutter door with compensation function according to claim 2 or 3, characterized in that, The first end plate (11) is close to the drum (9), and the end of the drum (9) is fixedly connected to a rotating shaft. The worm gear (12) is fixedly connected to the rotating shaft, and the rotating shaft is rotatably connected to the slide plate (17). The motor (10) is located on the side of the slide plate (17) close to the drum (9). The first end plate (11) is provided with clearance windows at positions corresponding to the motor (10) and the rotating shaft.

5. A fireproof rolling shutter door with compensation function according to claim 4, characterized in that, The motor (10) and the slide plate (17) are fixedly connected by bolts that pass through the slide plate (17), and the second end plate (16) is provided with clearance holes at positions corresponding to the bolts.

6. A fireproof rolling shutter door with compensation function according to claim 1, characterized in that, The rollers (9) are two parallel rollers arranged from near to far on one side of the lintel (4). The curtain (7) consists of two strips wound around the two rollers (9). The ends of the two rollers (9) are fixedly connected to driven sprockets (13). The worm gear (12) is fixedly connected to one of the rollers (9). The output shaft of the motor (10) is fixedly connected to a drive sprocket. Chains (14) are wound around the two driven sprockets (13) and the drive sprocket.

7. A fireproof rolling shutter door with compensation function according to claim 6, characterized in that, The first end plate (11) is provided with a housing (3) fixedly connected to the lintel (4). The motor (10), drive sprocket, driven sprocket (13), chain (14), worm gear (12) and curtain (7) are all located inside the housing (3). The bottom of the housing (3) is provided with a long strip-shaped through hole for the corresponding curtain (7) to pass through. The side of the curtain (7) near the lintel (4) is sealed with the first sealing strip (8). The other side of the curtain (7) and both sides of the curtain (7) away from the lintel (4) are sealed with the second sealing strip (15). The second sealing strip (15) is fixedly connected to the housing (3).

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