Fire exit door with automatic locking device

Abstract

The utility model relates to the technical field of fire-fighting doors, and discloses a fire-fighting door with an automatic locking device, which comprises the locking device and a fire-fighting door body, the front part of the fire-fighting door body is in threaded connection with a threaded bolt, the surface of the fire-fighting door body is in hinge connection with a fire-fighting door frame, and the locking device is arranged at the front part of the fire-fighting door body. The locking device comprises a first metal plate, a connecting block, a connecting assembly, an electric push rod and a control device, the connecting block is fixedly connected to the front portion of the first metal plate, the connecting block is slidably connected to the right portion of an inner piston rod of the electric push rod, and the electric push rod is installed on the front portion of the connecting assembly and installed at the bottom of the control device. According to the fire exit door with the automatic locking device, the threaded bolts, the second metal plate and the first metal plate are arranged, the second metal plate and the fire exit door body are locked and fixed through the threaded bolts, a connecting assembly can be conveniently and integrally separated from the fire exit door body, and a large amount of time for replacing an electric push rod is not needed.

Description

Technical Field

[0001] This utility model relates to the field of fire door technology, specifically a fire door equipped with an automatic locking device. Background Technology

[0002] Fire doors are fire-resistant doors that can block fire and the smoke, toxic gases, heat and radiation brought by fire for a certain period of time. They are important facilities for fire separation and smoke evacuation in buildings.

[0003] The prior art discloses a fire door with an automatic locking device, application number CN202121195920.5. The fire door body has a water pipe laid beneath its outer skin. In the event of a fire, a water valve automatically opens under the control unit, allowing tap water to flow into the water pipe from the inlet. Simultaneously, heated water is discharged from the outlet, thus cooling the fire door and reducing damage. During normal use, the fire door body can be opened and closed by pulling the handle for easy passage. Furthermore, due to the large airflow generated during a fire, normally closed fire doors do not have sufficient time to lock, potentially allowing the fire to spread into the corridor. By setting a first and second locking tongue, the fire door is automatically locked upon triggering the water pipe's inlet, ensuring the safety of personnel inside.

[0004] The above-mentioned method achieves automatic locking of the fire door by triggering water to enter the water pipe. The water flowing inside the fire door will cause corrosion of the first and second locking tongues. When replacing the first and second locking tongues, the entire fire door needs to be disassembled and replaced, making the replacement of the first and second locking tongues quite troublesome. Utility Model Content

[0005] The purpose of this invention is to provide a fire door with an automatic locking device to solve the problems mentioned in the background art.

[0006] To achieve the above objectives, this utility model provides the following technical solution: a fire door with an automatic locking device, comprising a locking device and a fire door body, wherein a threaded bolt is threadedly connected to the front of the fire door body, a fire door frame is connected to the surface of the fire door body via a hinge, the locking device is installed at the front of the fire door body, and a temperature sensor is installed on the back of the fire door body.

[0007] The locking device includes a metal plate, a connecting block, a connecting assembly, an electric push rod, and a control device. The connecting block is fixedly connected to the front of the metal plate and slidably connected to the right side of the internal piston rod of the electric push rod. The electric push rod is installed at the front of the connecting assembly and at the bottom of the control device.

[0008] Preferably, the connecting assembly includes a second metal plate, a first threaded rod, a sliding support platform, a first clamping frame, a metal slide rod, a second clamping frame, and a limiting metal plate. The first threaded rod is fixedly connected to the front of the second metal plate, the first clamping frame is installed in the middle of the second metal plate, the metal slide rod is inserted into the top of the first clamping frame, the sliding support platform is fixedly connected to the left side of the second clamping frame, and the limiting metal plate is movably connected to the top of the second clamping frame.

[0009] Preferably, the threaded rod is movably connected to the back of the clamping frame, and a nut is threaded onto the surface of the threaded rod. The nut rotates on the surface of the threaded rod to thread-fix the clamping frame and the metal plate.

[0010] Preferably, the threaded bolts are threaded into the interior of the second metal plate and into the four corners of the first metal plate. The threaded bolts can determine the positions of the second metal plate and the first metal plate, making it convenient to disassemble and replace the second metal plate and the first metal plate, while also protecting the safety of the second metal plate and the first metal plate.

[0011] Preferably, a fixing rod is fixedly connected to the right side of the clamping frame one, the limiting metal plate is movably connected to the top of the clamping frame one, and the fixing rod is connected to the inside of the limiting metal plate. The limiting metal plate can insert and fix the clamping frame two and the clamping frame one, thereby determining the position of the clamping frame two and preventing the clamping frame two from shaking.

[0012] Preferably, the second clamping frame is slidably connected to the surface of the first clamping frame, the sliding support platform is slidably connected to the surface of the first clamping frame, and the sliding support platform is slidably connected to the surface of the metal slide rod. The second clamping frame drives the metal slide rod to slide on the surface of the first clamping frame, thereby adjusting the distance between the second clamping frame and the first clamping frame.

[0013] Preferably, the first clamping frame is movably connected to the left end of the electric push rod, the sliding support platform is slidably connected to the surface of the electric push rod, and the second clamping frame is movably connected to the surface of the electric push rod. The first clamping frame, the sliding support platform, and the second clamping frame can clamp and fix the electric push rod, making it convenient to disassemble and replace the electric push rod.

[0014] Preferably, the second metal plate is installed on the front of the fire door body, the control device is slidably connected to the front of the fire door body, and the control device is inserted into the top of the second metal plate. The position of the control device can be determined by inserting the control device into the top of the second metal plate, which facilitates the disassembly and replacement of the control device.

[0015] Compared with the prior art, the beneficial effects of this utility model are:

[0016] The fire door equipped with an automatic locking device is equipped with threaded bolts, a second metal plate, and a first metal plate. The threaded bolts can lock and fix the second metal plate and the first metal plate, making it easy to detach the second metal plate and the first metal plate from the fire door body and the fire door frame, facilitating the replacement of the electric push rod without spending a lot of time on replacement.

[0017] This fire door equipped with an automatic locking device has a limiting metal plate, a second clamping frame, and a first clamping frame. When the limiting metal plate disengages from the second and first clamping frames, the second clamping frame slides along the surface of the first clamping frame, and the second clamping frame disengages from the first clamping frame. This allows the electric push rod to be disassembled and replaced quickly and easily, thus increasing the service life of the device. Attached Figure Description

[0018] Figure 1 This is a three-dimensional schematic diagram of the entire utility model;

[0019] Figure 2 This is a three-dimensional schematic diagram of the locking device and threaded bolt of this utility model;

[0020] Figure 3 This utility model Figure 2 A magnified view of the structure at point A in the diagram;

[0021] Figure 4 This is a schematic diagram of the metal plate 2 and the threaded rod 1 of this utility model;

[0022] Figure 5 This is a schematic diagram of the clamping frame and the metal slide bar of this utility model;

[0023] Figure 6 This is a two-dimensional schematic diagram of the sliding support platform and clamping frame of this utility model.

[0024] In the diagram: 1. Locking device; 11. Metal plate one; 12. Connecting block; 13. Connecting assembly; 131. Metal plate two; 132. Threaded rod one; 133. Sliding support platform; 134. Clamping frame one; 135. Metal slide rod; 136. Clamping frame two; 137. Limiting metal plate; 14. Electric push rod; 15. Control device; 2. Fire door body; 3. Fire door frame; 4. Threaded bolt. Detailed Implementation

[0025] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0026] Please see Figure 1-6 The present invention provides the following technical solution:

[0027] A fire door equipped with an automatic locking device includes a locking device 1 and a fire door body 2. The front of the fire door body 2 is threadedly connected with a threaded bolt 4, and the surface of the fire door body 2 is hinged to a fire door frame 3. The locking device 1 is installed at the front of the fire door body 2, and a temperature sensor is installed on the back of the fire door body 2.

[0028] The locking device 1 includes a metal plate 11, a connecting block 12, a connecting assembly 13, an electric push rod 14, and a control device 15. The connecting block 12 is fixedly connected to the front of the metal plate 11 and slidably connected to the right side of the internal piston rod of the electric push rod 14. The electric push rod 14 is installed at the front of the connecting assembly 13 and at the bottom of the control device 15.

[0029] The connecting assembly 13 includes a second metal plate 131, a first threaded rod 132, a sliding support platform 133, a first clamping frame 134, a metal slide rod 135, a second clamping frame 136, and a limiting metal plate 137. The first threaded rod 132 is fixedly connected to the front of the second metal plate 131, which is installed on the front of the fire door body 2. The control device 15 is slidably connected to the front of the fire door body 2 and inserted into the top of the second metal plate 131. The position of the control device 15 can be determined by inserting it into the top of the second metal plate 131, making it easy to disassemble and replace. The first threaded rod 132 is movably connected to the first clamping frame 134. On the back, a nut is threaded onto the surface of threaded rod 132. The nut rotates on the surface of threaded rod 132, thus threadedly fixing clamping frame 134 and metal plate 131. Clamping frame 134 is installed in the middle of metal plate 131 and is movably connected to the left end of electric push rod 14. Sliding support platform 133 is slidably connected to the surface of electric push rod 14. Clamping frame 136 is movably connected to the surface of electric push rod 14. Clamping frame 134, sliding support platform 133, and clamping frame 136 clamp and fix electric push rod 14, facilitating disassembly and replacement of electric push rod 14. Threaded bolt 4 is threaded onto the metal plate 131. Inside the second metal plate 131, threaded bolts 4 are threadedly connected to the four corners of the first metal plate 11. The threaded bolts 4 can determine the position of the second metal plate 131 and the first metal plate 11, facilitating their disassembly and replacement, and protecting their safety. A metal slide rod 135 is inserted into the top of the first clamping frame 134. A fixing rod is fixedly connected to the right side of the first clamping frame 134. A limiting metal plate 137 is movably connected to the top of the first clamping frame 134, and a fixing rod is connected inside the limiting metal plate 137. The limiting metal plate 137 allows for the insertion of the second clamping frame 136 and the first clamping frame 134. The clamping frame 2 136 is fixed, thereby determining its position and preventing it from shaking. The sliding support platform 133 is fixedly connected to the left side of the clamping frame 2 136. The clamping frame 2 136 is slidably connected to the surface of the clamping frame 1 134. The sliding support platform 133 is slidably connected to the surface of the clamping frame 1 134 and the surface of the metal slide rod 135. The clamping frame 2 136 drives the metal slide rod 135 to slide on the surface of the clamping frame 1 134, thereby adjusting the distance between the clamping frame 2 136 and the clamping frame 1 134. The limiting metal plate 137 is movably connected to the top of the clamping frame 2 136.

[0030] When in use, when the temperature sensor on the back of the fire door body 2 senses high temperature, the control device 15 is activated. The control device 15 controls the electric push rod 14 to extend. The piston rod of the electric push rod 14 is inserted into the front of the connecting block 12, which can automatically lock the fire door body 2 and the fire door frame 3.

[0031] In order to ensure that the control device 15 can freely control the extension and retraction of the electric push rod 14, the electric push rod 14 and the control device 15 need to be maintained.

[0032] Pull the control device 15 upwards. The control device 15 moves upwards along the front of the fire door body 2. The control device 15 is separated from the metal plate 131, making it convenient to maintain and inspect the control device 15.

[0033] Pulling the limiting metal plate 137 outwards allows the limiting metal plate 137 to disengage from the clamping frame 2 136 and the clamping frame 1 134, loosening the connection between the clamping frame 2 136 and the clamping frame 1 134.

[0034] Pulling the clamping frame 2 136 causes the sliding support platform 133 to slide on the surface of the clamping frame 1 134, while the clamping frame 2 136 slides on the surface of the metal slide bar 135, causing the clamping frame 2 136 to disengage from the electric push rod 14.

[0035] Pull the electric push rod 14 to the right to disengage it from the clamping frame 134. Then pull the electric push rod 14 forward to disengage it from both the clamping frame 134 and the clamping frame 2 136, making it easier to maintain and inspect the electric push rod 14.

[0036] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to the embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A fire door with automatic closing device, comprising a closing device (1) and a fire door body (2), characterized in that: The front of the fire door body (2) is screw connected with a threaded bolt (4), the surface of the fire door body (2) is hinged connected with a fire door frame (3), the locking device (1) is installed on the front of the fire door body (2), and the back of the fire door body (2) is provided with a temperature sensor; The locking device (1) comprises a metal plate one (11), a connecting block (12), a connecting assembly (13), an electric push rod (14) and a control device (15), the connecting block (12) is fixedly connected to the front of the metal plate one (11), the connecting block (12) is slidingly connected to the right part of the inner piston rod of the electric push rod (14), the electric push rod (14) is installed on the front of the connecting assembly (13), and the electric push rod (14) is installed on the bottom of the control device (15).

2. A fire door with automatic closing device according to claim 1, characterized in that: The connecting assembly (13) comprises a metal plate two (131), a threaded rod one (132), a sliding bearing table (133), a clamping frame one (134), a metal sliding rod (135), a clamping frame two (136) and a limiting metal plate (137), the threaded rod one (132) is fixedly connected to the front face of the metal plate two (131), the clamping frame one (134) is installed at the middle position of the metal plate two (131), the metal sliding rod (135) is inserted into the top of the clamping frame one (134), the sliding bearing table (133) is fixedly connected to the left part of the clamping frame two (136), and the limiting metal plate (137) is movably connected to the top of the clamping frame two (136).

3. A fire door with automatic closing device according to claim 2, characterized in that: The threaded rod one (132) is movably connected to the back of the clamping frame one (134), and the surface of the threaded rod one (132) is screw connected with a nut.

4. A fire door with automatic closing device according to claim 3, characterized in that: The threaded bolt (4) is screw connected to the inside of the metal plate two (131), and the threaded bolt (4) is screw connected to the four corners of the metal plate one (11).

5. A fire door with automatic closing device according to claim 4, characterized in that: The right part of the clamping frame one (134) is fixedly connected with a fixed rod, the limiting metal plate (137) is movably connected to the top of the clamping frame one (134), and the fixed rod is connected to the inside of the limiting metal plate (137).

6. A fire door with automatic closing device according to claim 5, characterized in that: The clamping frame two (136) is slidingly connected to the surface of the clamping frame one (134), the sliding bearing table (133) is slidingly connected to the surface of the clamping frame one (134), and the sliding bearing table (133) is slidingly connected to the surface of the metal sliding rod (135).

7. A fire door with automatic closing device according to claim 6, characterized in that: The clamping frame one (134) is movably connected to the left end of the electric push rod (14), the sliding bearing table (133) is slidingly connected to the surface of the electric push rod (14), and the clamping frame two (136) is movably connected to the surface of the electric push rod (14).

8. A fire door with automatic closing device according to claim 7, characterized in that: The metal plate two (131) is installed on the front of the fire door body (2), the control device (15) is slidingly connected to the front of the fire door body (2), and the control device (15) is inserted into the top of the metal plate two (131).

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