Fireproof door of underground garage

Abstract

The utility model relates to the field of fireproof doors, in particular to an underground garage fireproof door. According to the technical scheme, the underground garage fireproof door comprises an inner-layer door plate and outer-layer door plates installed at the front end and the rear end of the inner-layer door plate, and further comprises a reset door top assembly installed in the inner-layer door plate and a limiting assembly installed on the outer-layer door plates. The fireproof door is fixed through the first ejector rod, the second ejector rod, the balancing weight, the disc type one-way rotating damper and the rotating shaft instead of depending on a spring bolt mechanism after being closed, and internal mechanical linkage of the disc type rotating damper is simpler than that of the spring bolt mechanism; therefore, the probability that the fireproof door cannot be opened smoothly due to deformation of internal parts at high temperature is reduced, and the impact resistance of the fireproof door is further improved in the mode that the first ejector rod and the second ejector rod serve as door tops to abut against the two sides of the front end and the rear end of the fireproof door at the same time.

Description

TECHNICAL FIELD

[0001] The utility model relates to the field of fireproof door, especially to an underground garage fireproof door. BACKGROUND

[0002] The underground garage fireproof door is a special door which can meet the requirements of fire resistance stability, integrity and heat insulation within a certain time. It not only has the function of ordinary door, but also can effectively prevent the spread of fire and gain valuable time for personnel evacuation.

[0003] The lock tongue mechanism contains a plurality of small and precise parts, which leads to the fireproof door using the lock tongue mechanism being more likely to deform the internal parts of the door lock due to high temperature in the fire, and unable to smoothly complete the complex internal mechanical linkage, thereby affecting the opening of the fireproof door and the safety of the escapee.

[0004] Therefore, in view of the situation that the fireproof door using the lock tongue mechanism is more likely to deform the internal parts of the door lock due to high temperature in the fire, and unable to smoothly open, an underground garage fireproof door can be designed to reduce the probability of such situation. SUMMARY

[0005] In order to overcome the problem that the fireproof door using the lock tongue mechanism is easy to deform the internal parts of the door lock due to high temperature in the fire during the fireproof process, and unable to smoothly complete the complex internal mechanical linkage, thereby affecting the opening of the fireproof door and the safety of the escapee.

[0006] The technical scheme of the utility model is: an underground garage fireproof door, comprising an inner door panel and outer door panels installed at the front and rear ends of the inner door panel, a reset door top assembly installed in the inner door panel, and a limiting assembly installed on the outer door panel; the reset door top assembly comprises a disc type one-way rotation damper, a chain groove, a rotating shaft, a gear groove, a chain, a first top rod, a second top rod, a counterweight, and a pull ring; the limiting assembly comprises a Z-shaped positioning block, a second positioning block, a third positioning block, an intermediate baffle, and a side baffle.

[0007] Preferably, when the fireproof door is opened, the first end of the first jacks is pressed down, and the person with lower height pulls down the first end of the first jacks through the pull ring, so that the two first jacks and the second jacks rotate counterclockwise and stand up together under the joint action of the rotating shaft, the gear groove and the chain, then push the door panel to open the door panel for the escapees to pass through, then the door closer slowly closes the door panel, while the counterweight makes the first jacks and the second jacks rotate clockwise by gravity to reset, but in the process of the clockwise rotation of the first jacks and the second jacks, the disc type one-way rotation damper slows down the rotation of the first jacks and the second jacks through the rotating shaft, so that the first jacks and the second jacks restore to the original angle after the door panel is closed and abut against the two sides of the front and rear ends of the door panel, to automatically lock the door after the personnel leave and the fireproof door is closed. In this series of processes, the disc type rotation damper can maintain relatively stable performance in high temperature environment due to its structural design, because it mainly realizes resistance through rotational friction without complex internal mechanical linkage, thereby reducing the probability that the fireproof door cannot be smoothly opened in high temperature. After the first jacks and the second jacks are reset, they are abutted by the Z-shaped positioning block, the second positioning block, the third positioning block, the middle baffle and the side baffle, so that the first jacks and the second jacks abut against the two sides of the front and rear ends of the door as the door top, thereby further improving the impact resistance of the fireproof door.

[0008] Preferably, two disc type one-way rotation dampers are arranged, and are both installed on the inside of the inner door panel through bolts; a chain groove is arranged between the two disc type one-way rotation dampers and is opened on the rear end surface of the inner door panel.

[0009] Preferably, rotating shafts are installed in the disc type one-way rotation dampers, and the rotating shafts penetrate the inner door panel and the outer door panel; gear grooves are opened on the rotating shafts; and a chain is jointly engaged in the two gear grooves.

[0010] Preferably, the front and rear ends of the rotating shaft on one side are fixedly connected with the first jacks; the front and rear ends of the rotating shaft on the other side are fixedly connected with the second jacks; the upper part of the tail end of the first jacks and the second jacks is installed with a counterweight; and the lower part of the first jacks is installed with a pull ring.

[0011] Preferably, the middle part of the first jacks and the second jacks is arranged with a Z-shaped positioning block fixedly connected with the outer door panel; one side of the first jacks is arranged with a second positioning block; and one side of the tail end of the second jacks is arranged with a third positioning block.

[0012] Preferably, a door frame is arranged around the outer door panel; a hinge is installed on one side of the rear end of the door frame and is connected with the outer door panel at the rear end of the inner door panel through bolts; and a door closer is installed on the upper part of the rear end of the door frame and is connected with the outer door panel at the rear end of the inner door panel through bolts.

[0013] Preferably, the second positioning block and the third positioning block are fixedly connected to the door frame; the outer sides of the second positioning block and the third positioning block are fixedly connected with side baffles; and the outer sides of the Z-shaped positioning blocks are fixedly connected with middle baffles.

[0014] The present application has the following beneficial effects:

[0015] 1. The reset door top assembly and the limiting assembly are arranged, so that the fixing of the fireproof door after being closed no longer relies on the latch tongue mechanism, but is realized by the first top rod, the second top rod, the counterweight, the disc type one-way rotation damper and the rotating shaft, the internal mechanical linkage of the disc type rotation damper is simpler than that of the latch tongue mechanism, so that the probability that the fireproof door cannot be smoothly opened due to deformation of internal parts in high temperature is reduced, and the first top rod and the second top rod are used as the door top to simultaneously abut against both sides of the front and rear ends of the fireproof door, so that the impact resistance of the fireproof door is further improved. BRIEF DESCRIPTION OF DRAWINGS

[0016] Figure 1 The overall structure schematic view of the present application is shown;

[0017] Figure 2 The Z-shaped positioning block structure schematic view of the present application is shown;

[0018] Figure 3 The inner door panel structure schematic view of the present application is shown;

[0019] Figure 4 The disc type one-way rotation damper structure schematic view of the present application is shown;

[0020] Figure 5 The first top rod structure schematic view of the present application is shown;

[0021] Figure 6 The rotating shaft structure schematic view of the present application is shown.

[0022] Mark 1, inner door panel; 2, outer door panel; 301, disc type one-way rotation damper; 302, chain groove; 303, rotating shaft; 304, gear groove; 305, chain; 306, first top rod; 307, second top rod; 308, counterweight; 309, pull ring; 401, Z-shaped positioning block; 402, second positioning block; 403, third positioning block; 404, middle baffle; 405, side baffle; 5, hinge; 6, door frame; 7, door closer. DETAILED DESCRIPTION

[0023] The present application will be further described below in combination with the drawings and embodiments.

[0024] Please refer to Figures 1-6The utility model provides an embodiment: a kind of underground garage fire door, including inner door panel 1 and the outer door panel 2 being installed in the front and rear end of inner door panel 1, further include the reset door top assembly being installed in inner door panel 1, and the limiting component being installed on outer door panel 2;Reset door top assembly includes disc type one-way rotation damper 301, chain groove 302, pivot 303, gear groove 304, chain 305, first top rod 306, second top rod 307, counterweight 308, pull ring 309;Limiting component includes Z-shaped positioning block 401, second positioning block 402, third positioning block 403, intermediate baffle 404, side baffle 405;Outer door panel 2 is provided with door frame 6 in periphery;The side of rear end of door frame 6 is equipped with hinge 5, and hinge 5 is connected with the outer door panel 2 of rear end of inner door panel 1 by bolt;The upper side of rear end of door frame 6 is equipped with door closer 7, and door closer 7 is connected with the outer door panel 2 of rear end of inner door panel 1 by bolt.

[0025] Please refer to Figure 1 、 Figure 2 、 Figure 4 、 Figure 5 、 Figure 6 In the embodiment, disc type one-way rotation damper 301 is provided with two, and is installed in the inside of inner door panel 1 by bolt;Two disc type one-way rotation dampers 301 are provided with chain groove 302 being opened on the rear end face of inner door panel 1;Pivot 303 is installed in disc type one-way rotation damper 301, and pivot 303 all penetrates inner door panel 1 and outer door panel 2;Gear groove 304 is opened on pivot 303;Chain 305 is jointly engaged in two gear grooves 304;The front and rear end of one side pivot 303 is all fixed with first top rod 306;The front and rear end of other side pivot 303 is all fixed with second top rod 307;The upper side of the tail end of first top rod 306 and second top rod 307 is all equipped with counterweight 308;The lower side of first top rod 306 first section is equipped with pull ring 309;The middle of first top rod 306 and second top rod 307 is provided with Z-shaped positioning block 401 being fixed with outer door panel 2;One side of first top rod 306 first section is provided with second positioning block 402;One side of the tail end of second top rod 307 is provided with third positioning block 403;Second positioning block 402 and third positioning block 403 are all fixed on door frame 6;The outer side of second positioning block 402 and third positioning block 403 is all fixed with side baffle 405;The outer side of Z-shaped positioning block 401 is all fixed with intermediate baffle 404.

[0026] In use, when the fire door is opened, the first top rod 306 is pressed down, and the person with lower height pulls the first top rod 306 down through the pull ring 309, so that the two first top rods 306 and the second top rod 307 rotate counterclockwise and stand up under the joint action of the rotating shaft 303, the gear groove 304 and the chain 305, then push the door panel to open the door panel for the escapees to pass through, then the door closer 7 slowly closes the door panel, and the counterweight 308 rotates clockwise through gravity to reset the first top rod 306 and the second top rod 307, but in the process of clockwise rotation of the first top rod 306 and the second top rod 307, the disc type one-way rotation damper 301 slows down the rotation of the first top rod 306 and the second top rod 307 through the rotating shaft 303, so that the first top rod 306 and the second top rod 307 restore to the original angle and resist the two sides of the front and rear ends of the door panel after the door panel is closed, so as to automatically lock the door after the personnel leave and the fire door is closed.

[0027] In this series of processes, the disc type rotation resistance device can maintain relatively stable performance in high temperature environment due to its structural design, because it mainly realizes resistance through rotation friction, without complex internal mechanical linkage, thereby reducing the probability that the fire door cannot be smoothly opened in high temperature. After the first top rod 306 and the second top rod 307 are reset, they are resisted by the Z-shaped positioning block 401, the second positioning block 402, the third positioning block 403, the middle baffle 404 and the side baffle 405, so that the first top rod 306 and the second top rod 307 resist the two sides of the front and rear ends of the door as the door top, thereby further improving the impact resistance of the fire door.

[0028] Through the above steps, by setting the reset door top assembly and the limiting assembly, the fixation of the fire door after being closed is no longer dependent on the latch mechanism, but is realized through the first top rod 306, the second top rod 307, the counterweight 308, the disc type one-way rotation damper 301 and the rotating shaft 303. Since the internal mechanical linkage of the disc type rotation resistance device is simpler than that of the latch mechanism, the probability that the fire door cannot be smoothly opened in high temperature due to deformation of internal parts is reduced, and the way that the first top rod 306 and the second top rod 307 resist the two sides of the front and rear ends of the fire door as the door top further improves the impact resistance of the fire door.

Claims

1. A fireproof door for underground garage, comprising an inner door panel (1) and outer door panels (2) installed at the front and rear ends of the inner door panel (1); characterized in that: It also includes the reset door top assembly installed in the inner door panel (1), and the limiting assembly installed on the outer door panel (2); the reset door top assembly includes disc type one-way rotating damper (301), chain groove (302), rotating shaft (303), gear groove (304), chain (305), first top rod (306), second top rod (307), counterweight (308), pull ring (309); the limiting assembly includes Z-shaped positioning block (401), second positioning block (402), third positioning block (403), intermediate baffle (404), side baffle (405).

2. The fire door for underground garage according to claim 1, wherein: The disc type one-way rotating damper (301) is provided with two, and is installed in the inner layer door panel (1) through the bolt; the two disc type one-way rotating dampers (301) are provided with the chain groove (302) opened on the rear end face of the inner layer door panel (1).

3. A fire door for an underground garage according to claim 2, characterized in that: The rotating shaft (303) is installed in the disc type one-way rotating damper (301), and the rotating shaft (303) penetrates the inner layer door panel (1) and the outer layer door panel (2); the gear groove (304) is opened on the rotating shaft (303); the two gear grooves (304) are jointly meshed with the chain (305).

4. The fire door for underground garage according to claim 3, wherein: The front and rear ends of the rotating shaft (303) on one side are fixedly connected with the first top rod (306); the front and rear ends of the rotating shaft (303) on the other side are fixedly connected with the second top rod (307); the upper side of the tail end of the first top rod (306) and the second top rod (307) is provided with the counterweight (308); the lower side of the first top rod (306) is provided with the pull ring (309).

5. A fire door for an underground garage according to claim 4, wherein: The middle of the first top rod (306) and the second top rod (307) is provided with the Z-shaped positioning block (401) fixedly connected with the outer door panel (2); one side of the first top rod (306) is provided with the second positioning block (402); one side of the tail end of the second top rod (307) is provided with the third positioning block (403).

6. The fire door for underground garage according to claim 1, wherein: The outer periphery of the outer door panel (2) is provided with the door frame (6); one side of the rear end of the door frame (6) is provided with the hinge (5), and the hinge (5) is connected with the outer door panel (2) at the rear end of the inner layer door panel (1) through the bolt; the upper side of the rear end of the door frame (6) is provided with the door closer (7), and the door closer (7) is connected with the outer door panel (2) at the rear end of the inner layer door panel (1) through the bolt.

7. A fire door for an underground garage according to claim 6, characterized in that: The second positioning block (402) and the third positioning block (403) are fixedly connected on the door frame (6); the outer side of the second positioning block (402) and the third positioning block (403) is fixedly connected with the side baffle (405); the outer side of the Z-shaped positioning block (401) is fixedly connected with the intermediate baffle (404).

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