A free-fall fireproof curtain door

Abstract

The application provides a free-falling fireproof curtain door, a bottom cover which can be opened and closed is arranged at the bottom of a door box, the two sides of the bottom cover along the length direction are respectively hinged and connected with electromagnetic locks with the two sides of the door box, the electromagnetic locks are connected with a manual controller or a central controller; the fireproof curtain is rotatably installed in the door box through a winding shaft, one end of the winding shaft is arranged to pass through one side of the door box and is fixedly connected with a bearing seat, the bearing seat is connected with a one-way bearing, a rolling seat of the one-way bearing is connected with a motor, when the bottom cover is opened, the fireproof curtain freely falls under the dead weight, when the fire is over, the motor drives the winding shaft to rotate, so that the fireproof curtain is wound up; the fireproof curtain is made of a silicon-titanium coating fireproof cloth. The fireproof curtain door can isolate the fire in the first time, avoids the spread of the fire, the dead weight of the fireproof curtain door is light, the fireproof curtain door is suitable for buildings with small bearing capacity and is suitable for places with large fireproof span.

Description

Technical Field

[0001] This invention relates to the field of fireproof rolling shutter technology, specifically to a free-falling fireproof rolling shutter. Background Technology

[0002] Fire-resistant roller shutters are fire-resistant and heat-insulating facilities suitable for large openings in buildings. They are widely used in fire-resistant partitions in industrial and civil buildings, effectively preventing the spread of fire and protecting life and property. They are an indispensable fire protection facility in modern buildings. Especially with the rapid development of new energy vehicles, there have been occasional incidents of spontaneous combustion of new energy vehicles while charging in underground buildings. If the fire is not quickly controlled, it could seriously threaten life and property.

[0003] There are two main types of existing fire-resistant roller shutters: steel roller shutters and inorganic fabric double-track roller shutters. Both types rely on a motor to slowly lower the shutter, requiring a certain amount of time to completely isolate the fire. However, in actual fires, the fire spreads rapidly between the time the smoke detector detects the fire and the control center lowers the shutter. If the shutter is lowered slowly by motor control, the fire could easily spread further, failing to isolate the fire immediately upon detection.

[0004] To solve this problem, a fusible link device can be installed on the fire-resistant roller shutter door. When a fire occurs, the temperature at the fusible link device on the fire-resistant roller shutter door reaches 70°C, the fusible link device melts, and the fire-resistant roller shutter door falls quickly under its own weight, rapidly isolating the fire. However, this technical solution still has the following shortcomings: (1) The fusible link device is located near the door box of the fire-resistant roller shutter door, which may be far from the fire point. The fire-resistant roller shutter door will only fall when the fire spreads to the vicinity of the fire-resistant roller shutter door and the temperature of the fusible link device on the fire-resistant roller shutter door, which is far from the ground, reaches 70°C. This is not suitable for fire-resistant locations without partitions; (2) The entire fire-resistant roller shutter door is lifted and rolled up by the fusible link device, but the fusible link device can only bear a limited weight, making it unsuitable for fire-resistant roller shutter doors that are heavy and have a large span; (3) After the fusible link device melts, it is necessary to replace the fusible link device and reinstall the fire-resistant roller shutter door. Summary of the Invention

[0005] In view of the above-mentioned shortcomings in the existing technology, the present invention provides a free-falling fireproof roller shutter door. In the event of a fire, the bottom cover can be opened manually or by a central controller, allowing the fireproof roller shutter door to fall freely. This can isolate the fire immediately and prevent the fire from spreading. In addition, the fireproof roller shutter door is lightweight, making it suitable for buildings with low load-bearing capacity and for places with particularly large fire-resistant spans.

[0006] To solve the above-mentioned technical problems, the technical solution of the present invention is as follows:

[0007] A free-falling fireproof roller shutter door includes at least a door box and a fireproof roller shutter. The bottom of the door box is provided with an openable and closable bottom cover. The bottom cover is hinged and electromagnetically locked to the two sides of the door box along its length. The electromagnetic lock is connected to a manual controller or a central controller, which controls the connection and disconnection of the electromagnetic lock circuit. The fireproof roller shutter is rotatably installed in the door box via a roller shaft. One end of the roller shaft extends from one side of the door box and is fixedly connected to a bearing seat. The bearing seat is connected to a one-way bearing, and the rolling seat of the one-way bearing is connected to a motor. When the bottom cover is opened, the fireproof roller shutter falls freely under its own weight. When the fire ends, the motor drives the roller shaft to rotate, thereby rolling up the fireproof roller shutter. The fireproof roller shutter is made of silicon-titanium coated fireproof cloth.

[0008] The fireproof roller shutter door is equipped with smoke sensors and temperature sensors within its fireproof zone, and both the smoke sensors and temperature sensors are connected to the central controller.

[0009] The fireproof roller shutter is equipped with chain 1 on both sides, and chain 2 is connected to both sides of the bottom cover near the opening and closing point. The two chains 2 are respectively wrapped around the adjacent chain 1. When chain 1 moves down or up, chain 2 slides on chain 1.

[0010] A support frame is fixedly connected to the side wall of the fireproof roller shutter door, and the support frame is supported on the bottom of the motor.

[0011] The lower end of the fireproof roller shutter is connected to a gravity drop.

[0012] Compared with existing technologies, the beneficial effects of this invention are as follows: 1. The free-falling fireproof roller shutter door provided by this invention has a simple structure, is easy to install, and can isolate fire situations immediately, preventing the spread of fire. 2. The fireproof roller shutter in this invention is made of silicon-titanium coated fireproof cloth. The fireproof roller shutter is lightweight and suitable for buildings with low load-bearing capacity. It does not require the installation of sliding rails and is suitable for places with particularly large fire-resistant spans, especially for underground charging sites with low wind pressure requirements. 3. The free-falling fireproof roller shutter door provided by this invention opens the bottom cover manually or through a central controller, allowing the fireproof roller shutter door to fall freely. It can be opened and closed as a unit or controlled by a fire control center, providing good fire protection and allowing for repeated use. 4. This invention, through the setting of a one-way bearing and a motor, can achieve the free fall of the fireproof roller shutter and simultaneously enable the motor to drive the fireproof roller shutter to roll up, eliminating the need for manual rolling and achieving a high degree of automation. 5. This invention, through the linkage of chain one and chain two, closes the bottom cover while the fireproof roller shutter rolls up, eliminating the need for manual closing. Attached Figure Description

[0013] Figure 1 A schematic diagram of the structure of the free-falling fireproof roller shutter door provided by the present invention;

[0014] Figure 2 This is a schematic diagram showing the connection between the door box and the bottom cover in this invention;

[0015] Figure 3 A flowchart illustrating the operation of the free-falling fireproof roller shutter door provided by this invention;

[0016] Figure 4 This is a schematic diagram showing the connection between the bottom cover and the fireproof roller shutter in this invention;

[0017] In the diagram: 1-Door box, 2-Fireproof roller shutter, 3-Bottom cover, 4-Roller, 5-Gravity dropper, 6-Electromagnetic lock, 7-Bearing seat, 8-One-way bearing, 9-Motor, 10-Support frame, 11-Chain one, 12-Chain two. Detailed Implementation

[0018] The present invention will be further described below with reference to the accompanying drawings and embodiments.

[0019] The free-falling fireproof roller shutter door provided in this embodiment has the following structure: Figure 1 As shown, it includes at least a door box 1 and a fireproof roller shutter 2. The bottom of the door box is equipped with an openable and closable bottom cover 3. The fireproof roller shutter is rotatably installed inside the door box via a roller shaft 4. When the bottom cover is opened, the fireproof roller shutter hangs freely under its own weight. To ensure the fireproof roller shutter can hang quickly, a gravity drop 5 is connected to the lower end of the fireproof roller shutter. (See...) Figure 4 .

[0020] Specifically, the bottom cover is hinged to both sides of the door box along its length and connected to the two sides of the door box by electromagnetic locks 6, such as... Figure 2 As shown. The electromagnetic lock is connected to a manual controller or a central controller, which controls the connection and disconnection of the electromagnetic lock circuit. In the event of a fire, if personnel discover the fire in time and cannot extinguish it, they can disconnect the electromagnetic lock circuit through the manual controller, causing the fireproof roller shutter to fall freely. Generally, the manual controller is installed on the wall near the fireproof roller shutter door for easy access to lower the corresponding fireproof roller shutter door.

[0021] In the absence of timely detection by personnel, the fire-resistant roller shutter door is equipped with smoke and temperature sensors within its fire-resistant zone, both of which are connected to a central controller. When a fire occurs within the fire-resistant zone, the smoke and temperature sensors transmit their detected signals to the central controller. The central controller determines that a fire has occurred, disconnects the electromagnetic lock circuit, and the bottom cover opens. Without the support of the bottom cover, the fire-resistant roller shutter falls freely, thus isolating the fire. The workflow diagram of the free-falling fire-resistant roller shutter door is shown below. Figure 3As shown. The structure and method of the central controller and manual controller disconnecting the electromagnetic lock are existing technologies and will not be described in detail here.

[0022] In this embodiment, the fireproof roller shutter is made of silicon-titanium coated fireproof cloth, meeting the fire resistance standard A (A1). The fireproof roller shutter is lightweight, which can reduce the load on the building, making it suitable for the installation of large-span fireproof roller shutters. Moreover, even if the fireproof roller shutter suddenly falls, it will not cause injury to people passing below.

[0023] To ensure that the fireproof roller shutter can be easily retracted into the door box after the fire is extinguished, in this embodiment, one end of the roller extends out from one side of the door box and is fixedly connected to a bearing seat 7. A one-way bearing 8 is connected to the bearing seat, and a motor 9 is connected to the rolling seat of the one-way bearing. Specifically, a support frame 10 is fixedly connected to the side wall of the fireproof roller shutter door, and the support frame supports the bottom of the motor. Figure 1 When the electromagnetic lock is disengaged, the bottom cover opens, and the fireproof roller shutter rotates and falls freely under its own weight. Since the one-way bearing can rotate freely in one direction, when the motor is disconnected, the roller and the one-way bearing rotate freely with the fireproof roller shutter, without obstructing its descent. When the fire is extinguished and the fireproof roller shutter needs to be retracted, simply turn on the motor. Because the one-way bearing is locked in the other direction, the motor drives the one-way bearing to rotate in the locked direction, thereby rotating the roller in that direction and retracting the fireproof roller shutter into the door box. Then, close the bottom cover, which supports the fireproof roller shutter, and the motor can be disconnected, putting the fireproof roller shutter door in a ready-to-operate state.

[0024] Because the door box is positioned high, making it inconvenient to manually close the bottom cover, in this embodiment, chains 11 are connected to both sides of the fireproof roller shutter. Chains 2 12 are connected to both sides of the bottom cover near the opening / closing area. The two chains 2 are respectively looped onto the adjacent chains 1. When chain 1 moves downwards or upwards, chain 2 slides on chain 1. Figure 4 As shown in the diagram, the bottom cover is in the open state, and the door box is not shown. When the bottom cover is open, chain one moves downward with the fireproof roller shutter, while chain two slides on chain one, without affecting the free descent of the fireproof roller shutter. When the motor drives the fireproof roller shutter to retract, chain one rolls upward with the fireproof roller shutter, while chain two also slides on chain one until the lower end of chain one is wound up. At this point, chain one drives chain two to retract, thereby closing the bottom cover. Under the action of the electromagnetic lock, the bottom cover closes tightly and supports the fireproof roller shutter.

Claims

1. A free-falling fireproof roller shutter door, comprising at least a door box and a fireproof roller shutter, characterized in that: The fireproof roller shutter is made of silicon-titanium coated fireproof cloth. The bottom of the door box has an openable and closable cover. The two sides of the cover along its length are hinged and electromagnetically locked to the two sides of the door box, respectively. The electromagnetic lock is connected to a manual controller or a central controller, which controls the connection and disconnection of the electromagnetic lock circuit. The fireproof roller shutter is installed inside the door box via a rotating roller. One end of the roller extends from one side of the door box and is fixedly connected to a bearing seat. The bearing seat is connected to a one-way bearing, and the rolling seat of the one-way bearing is connected to a motor. When the bottom cover is opened, the fireproof roller shutter falls freely under its own weight. When the fire is extinguished, the motor drives the roller. The fireproof roller shutter is rotated to roll up. Chain 1 is connected to both sides of the fireproof roller shutter, and chain 2 is connected to both sides of the bottom cover near the opening / closing area. The two chain 2s are respectively looped onto the adjacent chain 1. When chain 1 moves downwards or upwards, chain 2 slides on chain 1. When the motor drives the fireproof roller shutter to retract, chain 1 rolls up with the fireproof roller shutter, and chain 2 also slides on chain 1 until the lower end of chain 1 is wound up. At this point, chain 1 drives chain 2 to retract, thereby closing the bottom cover. Under the action of the electromagnetic lock, the bottom cover closes tightly and supports the fireproof roller shutter, disconnecting the motor and putting the fireproof roller shutter door in a standby state.

2. The free-falling fireproof roller shutter door according to claim 1, characterized in that: The fireproof roller shutter door is equipped with smoke sensors and temperature sensors within its fireproof zone, and both the smoke sensors and temperature sensors are connected to the central controller.

3. The free-falling fireproof roller shutter door according to claim 1, characterized in that: A support frame is fixedly connected to the side wall of the fireproof roller shutter door, and the support frame is supported on the bottom of the motor.

4. The free-falling fireproof roller shutter door according to claim 1, characterized in that: The lower end of the fireproof roller shutter is connected to a gravity drop.

Images