CN2363742Y - Constant speed cross range fire-proof rolling blind - Google Patents

Abstract

The utility model discloses a constant-speed lateral fireproof rolling shutter, which comprises a guide rail, a reel, a scroll spring, an inner shaft, three gears, a deceleration motor, a curtain dial and a fireproof curtain; the outer end of the spring is It is connected with the reel, and the inner end is connected with the inner shaft; the first gear is fixed on the inner shaft, the second gear and dial are fixed on the output shaft of the motor, and the first The gear is connected to the second gear through the third gear; the upper end of the fire curtain is suspended on the guide rail by a suspension device. This fire shutter has the advantages of stable and reliable operation, low noise, low cost, and adaptability to large spans.

Description

Constant speed side fire shutter

The utility model relates to a fireproof rolling shutter.

The transmission principle of the existing lateral fire shutter is to realize opening and closing the door with two geared motors. When opening the door, a geared motor drives the reel to rotate, winds the fire curtain sideways on the reel, and opens the door. According to V=WR, the angular velocity W of the deceleration motor remains unchanged, and the linear velocity V is proportional to the radius R on the reel. When the fire shutter is tens of meters long, the linear velocity of the fire curtain is constant when the door is opened. increases to many times the initial linear velocity. Due to the inertia of the movement, it is difficult to achieve the stability of the transmission system and the reliability of the positioning of the fire curtain. As the length of the fire shutter increases, the reliability of the movement decreases.

When closing the door, the deceleration motor drives the dial to rotate, and the fire curtain is pulled out from the cabinet at a constant speed, and the fire curtain is hung on the guide rail. At this time, the radius of the fireproof curtain wound on the reel is constantly decreasing, and the reel rotates passively. To keep the curtain moving at a constant speed, the angular velocity continues to increase. At this time, the fire curtain on the reel is often unrolled. In order to prevent this from happening, the damping device of the reel is added, which consumes the effective power of the motor and makes the operation difficult to stabilize, and the noise of the transmission system and damping during motion cannot be resolved.

The purpose of this utility model is: to apply the transmission principle and optimized structural design of the utility model to provide a constant-speed lateral fireproof roller shutter, which can reliably and automatically cut off the fire source and dense smoke when a fire occurs. For fireproof partitions with complex shapes and large spans (not greater than 100 meters), the fireproof roller shutter of the utility model not only has the advantages of stable and reliable operation, low noise, etc., but also can reduce product costs.

The purpose of this utility model is achieved through the following technical solutions: a constant-speed lateral fire-proof rolling shutter, which is characterized in that it includes a guide rail, a reel, a scroll spring, an inner shaft, three gears, a reduction motor, and a curtain dial wheels and fire curtains; the outer end of the spring is connected to the drum, and the inner end is connected to the inner shaft; the first gear is fixed on the inner shaft, and the second gear and dial are fixed On the output shaft of the motor, the first gear is connected to the second gear through the third gear; the upper end of the fire curtain is suspended on the guide rail by a suspension device.

As mentioned above, the constant velocity lateral fireproof rolling shutter of the utility model has a spiral spring between the reel and the inner shaft, when the motor drives the curtain to move at a constant speed, the reel will The angular velocity of the fire curtain can be changed within a certain range and adapted to the moving speed of the curtain, and the spring force is basically constant, which can smoothly and uniformly wind up and release the fire curtain, and also prevent the fire curtain from unwinding. The fire shutter also has the advantages of low noise, simple structure, and low manufacturing cost.

Now below in conjunction with accompanying drawing and embodiment the utility model is described in further detail.

Fig. 1 is a structural schematic diagram of a typical embodiment of the utility model fire shutter;

Fig. 2 is a top view of the fire shutter shown in Fig. 1;

Fig. 3 is A-A sectional view among Fig. 1;

Fig. 4 is a B-B sectional view in Fig. 1 .

The embodiment of the utility model constant velocity lateral fireproof rolling shutter as shown in Fig. 1, Fig. 2, Fig. 3 and Fig. 4 includes a guide rail 1, a reel 2, a scroll spring 3, an inner shaft 4, gears 6, 7, 8. Reducer motor 9, curtain dial 10 and fire curtain 12; the outer end of spring 3 is connected to reel 2, and the inner end is connected to inner shaft 4; gear 6 is fixed on inner shaft 4, gear 8 and dial 10 is fixed on the output shaft of the motor 9, and the gear 6 and the gear 8 are connected through the transmission of the gear 7;

The fireproof rolling shutter of the utility model can ensure that the spring force is basically constant regardless of the opening or closing degree of the fireproof rolling shutter, and regardless of the length of the rolling shutter (within a certain range, such as not more than 100 meters), and can be well closed. Rolling the fire curtain also prevents the fire curtain from unrolling, ensuring the smoothness of the movement. Both door opening and closing motion speeds are equal. The pretensioning spring force is adjusted by the scroll spring 3. So as to meet the needs of fire shutters with different spans.

When opening the door, the deceleration motor 9 drives the curtain dial 10 to rotate, and the fire curtain 12 is moved into the cabinet at a constant speed. The fire curtain 12 is tightly wound on the reel 2 under the action of the spring force. At the beginning, Since the fire curtains 12 are all outside the cabinet, the radius of the reel 2 is the smallest. According to V=WR, if the linear velocity to the cabinet remains constant, the angular velocity W of the reel 2 is inversely proportional to the radius R of the reel. The angular velocity of the reel 2 is constantly changing, and the angular velocity is the largest at the beginning. Since the fixed angular velocity at which the gear 8 drives the inner shaft 4 to rotate is less than the angular velocity of the reel 2 at the beginning, there is relative motion between the inner shaft 4 and the reel 2, so that the spring 3 is slightly unwound. As the door opening position increases, the number of fire curtains 12 on the reel 2 increases, the radius increases, and the angular velocity of the reel 2 decreases continuously. When the angular velocity of the reel 2 is lower than the fixed angular velocity of the inner shaft 4, the spring starts Tighten slightly. The spring force remains essentially constant during the movement.

When closing the door, the reduction motor 9 rotates in another direction, and the fireproof curtain sheet 12 still moves at a constant speed. According to the utility model, during the movement, the spring force is not proportional to the length of the fire curtain, so it is not necessary to use a high-power motor to overcome the spring force. The test shows that when the length of the roller blind is as large as 100 meters, the spring used is very short, and only needs to turn 10 circles in the reel 2 to meet the requirements. The utility model adopts a simple structure of a reduction motor, so that the cost of the product is obviously reduced, and the reliability and quality of the product are greatly improved.

As shown in Figure 2, the fireproof roller shutter of the present utility model can realize turning angle by arranging booster device 15 beside guide rail.

As shown in Figure 4, in the present embodiment, the suspension device 21 includes a suspension roller 22, a suspension frame 23 and a dial roller 24, and the suspension roller 22 is supported on a support plate 26 fixed on the inner side wall of the guide rail 1; The upper end of 12 is tightly connected with the lower end of the axle of puller roller 24; Adopting this single suspension structure needs to ensure that the center of mass of the fire curtain 12 is in line with the center of the suspension roller 22 , so that the fire curtain 12 can move stably in the guide rail 1 through the roller 4 . The single suspension structure has the advantage of a smaller turning radius than the double suspension structure.

As shown in Figure 4, in order to prevent the fireworks from spreading from the guide rail 1, this embodiment also provides a fireproof and smoke-proof strip 25 between the lower inner wall of the guide rail 1 and the upper side of the fire curtain 12, so as to quickly cut off the fireworks. .

The utility model also can realize manual door opening and closing with handle shaking one end of deceleration motor 9 by suitable structure. After a fire occurs, the manual device can still help people escape.

Claims (3)

1, a kind of constant speed side direction fire resisting shutter is characterized in that, comprises guide rail (1), reel (2), volute spring (3), interior axle (4), gear (6,7,8), reducing motor (9), curtain sheet thumb wheel (10) and fire screen sheet (12); The outer end of described spring (3) links to each other with reel (2), and inner and interior axle (4) links to each other; Described gear (6) is fixed on the interior axle (4), and gear (8) and thumb wheel (10) are fixed on the output shaft of described motor (9), and gear (6) is in transmission connection by gear (7) with gear (8); The upper end of described fire screen sheet (12) hangs on the described guide rail (1) with suspension arrangement (21).

2, constant speed side direction fire resisting shutter according to claim 1, it is characterized in that, described suspension arrangement (21) comprises and hangs roller (22), hanger bracket (23) and thumb wheel roller (24), and described suspension roller (22) is supported on the support plate (26) on the madial wall that is fixed in described guide rail (1); The upper end of described fire screen sheet (12) and described lower end of pulling out the axle of wheel roller (24) are fastenedly connected; The axle of suspension roller (22) is fastenedly connected with the upper end of described hanger bracket (23), and the lower end of hanger bracket (23) and described upper end of pulling out the axle of wheel roller (24) are fastenedly connected.

3, constant speed side direction fire resisting shutter according to claim 1 and 2 is characterized in that, is provided with fire-proof smoke-proof bar (25) between the two sides, upper end of the lower end inwall of described guide rail (1) and fire screen sheet (12).

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