Civil air defense door with safety mechanism

Abstract

The invention discloses a civil air defense door with a safety mechanism, and relates to the technical field of civil air defense doors. The door comprises a door frame, a T-shaped mounting cover is fixedly connected to the top of the door frame, a lifting sliding groove is formed in the inner side of the door frame, a door plate is slidably connected into the lifting sliding groove, and the top of the door plate extends into the T-shaped mounting cover. When a door plate is driven to move downwards in the length direction of a lifting sliding groove and it is detected that a person penetrates through the interior of a door frame, an induction assembly can quickly start an adjusting electric push rod to drive two adjusting rods to push two adjusting sliding blocks to move away from each other in the length direction of an adjusting sliding groove around the hinged ends of the adjusting electric push rod; and the transmission assembly is matched to push the two adjusting rollers to move away from each other in the length direction of the guide sliding groove, and meanwhile, the middle section of the traction winding chain is driven to unfold in the length direction of the guide sliding groove, so that the bottom end of the traction winding chain pulls the door plate to move upwards in the length direction of the lifting sliding groove.

Description

Technical Field

[0001] The present application relates to the technical field of civil defense doors, and in particular to a civil defense door with a safety mechanism. Background Art

[0002] Civil defense doors, as important entrance and exit equipment for people's defense projects, play a key protective role in various emergency situations, such as wars, earthquakes and other natural disasters. With the acceleration of urbanization, the application scope of civil defense doors is becoming more and more extensive, especially in public places such as underground shopping malls and subway stations, and has become an indispensable protective facility. In these places, civil defense doors not only need to maintain a threshold-free state on the ground at normal times to facilitate the passage of a large number of people, but also need to respond quickly in an emergency, and the threshold must be lowered to meet the protection and sealing requirements to ensure the safety of personnel.

[0003] At present, the lifting type civil air defense door has been widely used in public places such as shopping malls due to its unique design and convenience of peacetime and wartime conversion. This kind of door can keep the ground flat in peacetime, without threshold obstruction, which greatly facilitates the passage of people and vehicles.

[0004] Although the lifting type civil air defense door has certain advantages in design and application, its safety problem cannot be ignored in actual use. Especially in public places such as shopping malls, due to the large flow of people and dense crowds, once the civil air defense door drops rapidly in an emergency, it is easy to squeeze and injure the people on the scene, reducing the safety of the device. Summary of the invention

[0005] The purpose of the present application is to solve the problem that a lifting civil air defense door rapidly descends in an emergency, which can easily cause squeezing and injury to the people on the scene, thereby reducing the safety of the device. The present application provides a civil air defense door with a safety mechanism.

[0006] In order to achieve the above-mentioned purpose, this application specifically adopts the following technical solutions: A human defense door with a safety mechanism comprises a door frame, the top of the door frame is fixedly connected to a T-shaped mounting cover, the inner side of the door frame is provided with a lifting slide groove, the interior of the lifting slide groove is slidably connected to a door panel, the top of the door panel extends to the interior of the T-shaped mounting cover, the interior of the T-shaped mounting cover is rotatably connected to a reel, one end of the reel is symmetrically fixedly connected to a traction chain, one end of the door frame is symmetrically provided with a pair of guide slide grooves, the interior of the guide slide groove is slidably connected to a guide slider, an adjusting roller is rotatably connected between two oppositely arranged guide sliders, and one end of the traction chain bypasses the guide slider along an S-shaped track. The bottom of one adjusting roller is fixedly connected to the top of another adjusting roller and the top of the unwinding roller, an adjusting slot is symmetrically provided at one end of the door frame, an adjusting slider is slidably connected inside the adjusting slot, an adjusting electric push rod is fixedly connected to one side of the door frame, an adjusting rod is symmetrically hinged at the output end of the adjusting electric push rod, one end of the adjusting rod is hinged to the adjusting slider, a transmission component for driving the guide slider to move along the length direction of the guide slot is installed at one end of the adjusting slider, a driving component for driving the unwinding roller to rotate is installed inside the door frame, and a sensing component is installed at one end of the door panel.

[0007] By adopting the above technical scheme, by setting the cooperation of the sensing component with the driving component and the transmission component, it is convenient to drive the door panel to move downward along the length direction of the lifting slide slot, and when it is detected that a person has passed through the inside of the door frame, the sensing component can quickly start the adjustment electric push rod to drive the two adjustment rods to move around the hinged end of the adjustment electric push rod to push the two adjustment sliders to move away from each other along the length direction of the adjustment slide slot, and cooperate with the transmission component to push the two adjustment rollers to move away from each other along the length direction of the guide slide slot, and at the same time drive the middle section of the traction chain to unfold along the length direction of the guide slide slot, so that the bottom end of the traction chain pulls the door panel to move upward along the length direction of the lifting slide slot, so that when the infrared scanner detects that there are still people passing through the door frame, the door panel is promptly pulled upward along the length direction of the lifting slide slot, thereby reducing the situation where the door panel squeezes the people along the length direction of the lifting slide slot, and effectively improving the safety of the device.

[0008] Furthermore, the transmission assembly includes an adjustment rack 1 fixedly connected to one end of the guide slider, one end of the adjustment slider is rotatably connected to an adjustment gear meshing with the adjustment rack 1, and one side of the door frame is symmetrically fixedly connected to an adjustment rack 2 meshing with the adjustment gear.

[0009] By adopting the above technical solution, by setting the adjustment rack 1 and the adjustment gear and the adjustment rack 2 for use in coordination, when the driving adjustment rod pushes the adjustment slider to drive the adjustment gear to move along the length direction of the adjustment slide groove, the adjustment gear is engaged with the adjustment rack 2 and the adjustment rack 1, and pushes the adjustment rack 1 to cooperate with the guide slider to drive the adjustment roller to move quickly along the length direction of the guide slide groove, thereby effectively improving the storage efficiency of the adjustment roller for the middle section of the traction chain and further improving the safety of the device.

[0010] Furthermore, the drive assembly includes a worm rotatably connected to the inside of the door frame, a drive motor is fixedly connected to the inside of the door frame, an output end of the drive motor is fixedly connected to the worm, and one end of the unwinding roller is fixedly connected to a worm wheel meshing with the worm.

[0011] By adopting the above technical solution and arranging the coordinated use of the worm and the worm wheel, starting the drive motor can drive the worm and the worm wheel to engage, and the worm wheel drives the unwinding roller to rotate, thereby facilitating driving the unwinding roller to rotate and effectively improving the practicability of the device.

[0012] Furthermore, the sensing component includes an infrared scanner fixedly connected to the bottom of the door panel, and one end of the door frame is fixedly connected to a controller, and the controller is electrically connected to the infrared scanner, the drive motor, and the adjustment electric push rod.

[0013] By adopting the above technical solution and setting up the coordinated use of the infrared scanner and the controller, it is convenient to use the infrared scanner to carry out real-time monitoring and identification of the human body passing through the door frame, and to use the controller to realize rapid control of the drive motor and the adjustment electric push rod when a person passes through the door frame, thereby effectively improving the safety of the device.

[0014] Furthermore, one end of the adjusting roller is symmetrically fixedly connected with an adjusting slider, and one end of the traction chain passes around the inside of the I-shaped limiting ring.

[0015] By adopting the above technical solution and setting an I-shaped limit ring for use in conjunction with the traction chain, it is convenient to limit the end of the traction chain that bypasses the adjusting roller through the I-shaped limit ring, thereby effectively reducing the deviation of one end of the traction chain along the length direction of the adjusting roller, thereby improving the accuracy of the device and further improving the safety of the device.

[0016] Furthermore, a U-shaped rubber anti-collision pad is symmetrically fixedly connected to the bottom of the door panel.

[0017] By adopting the above technical solution, by setting up the U-shaped rubber anti-collision pad and the door panel for use, the door panel can form a flexible contact with the human body through the U-shaped rubber anti-collision pad, thereby effectively reducing the degree of injury when the human body collides with the door panel, and effectively improving the safety of the device.

[0018] Furthermore, an extrusion bin is provided inside the door frame, an elastic air storage bag is fixedly connected inside the extrusion bin, an elastic sealing air bag is fixedly connected inside the lifting slide slot, one end of the elastic air storage bag is symmetrically fixedly connected to an air guide tube, one end of the air guide tube passes through the door frame and is connected to the elastic sealing air bag, and a sealing assembly for extruding the elastic air storage bag is installed inside the extrusion bin.

[0019] By adopting the above technical scheme, by setting up the sealing component and the coordinated use of the elastic air storage bag, the air guide tube and the elastic sealing air bag, when the driving is embedded in the lifting slide groove to form a closure on the inside of the door frame, the door panel pushes the sealing component to squeeze the elastic air storage bag, and the gas inside the elastic air storage bag passes through the air guide tube into the interior of the elastic sealing air bag, so that the elastic sealing air bag expands and fills the gap between the door panel and the lifting slide groove, thereby effectively improving the sealing effect between the door panel and the lifting slide groove.

[0020] Furthermore, the sealing assembly includes an extrusion slide plate slidably connected to the inside of the extrusion bin, and a resisting slide bar is symmetrically fixedly connected to the top of the extrusion slide plate, and one end of the resisting slide bar passes through the door frame and forms a sliding connection with the door frame.

[0021] By adopting the above technical scheme, by setting the cooperation of the resistance slide bar and the extrusion slide plate, it is convenient to use the door panel to squeeze the resistance slide bar along the length direction of the lifting slide groove to push the extrusion slide plate to squeeze the elastic air storage bag, so that the elastic air storage bag produces a contraction deformation, thereby facilitating the extrusion slide plate to squeeze the elastic air storage bag, and effectively improving the practicability of the device.

[0022] In summary, the present application includes at least one of the following beneficial effects: 1. By setting the cooperative use of the sensing component, the driving component and the transmission component, it is convenient to drive the door panel to move downward along the length direction of the lifting slide slot, and when it is detected that a person passes through the inside of the door frame, the sensing component can quickly start the adjusting electric push rod to drive the two adjusting rods to move around the hinged end of the adjusting electric push rod to push the two adjusting sliders to move away from each other along the length direction of the adjusting slide slot, and cooperate with the transmission component to push the two adjusting rollers to move away from each other along the length direction of the guide slide slot, and at the same time drive the middle section of the traction chain to unfold along the length direction of the guide slide slot, so that the bottom end of the traction chain pulls the door panel to move upward along the length direction of the lifting slide slot, so that when the infrared scanner detects that there are still people passing through the door frame, the door panel is promptly pulled upward along the length direction of the lifting slide slot, thereby reducing the situation where the door panel squeezes the people along the length direction of the lifting slide slot, and effectively improving the safety of the device.

[0023] 2. By setting up the coordination of adjusting rack 1 with adjusting gear and adjusting rack 2, when the driving adjusting rod pushes the adjusting slider to drive the adjusting gear to move along the length direction of the adjusting slide groove, the adjusting gear is engaged with adjusting rack 2 and adjusting rack 1, and pushes adjusting rack 1 to cooperate with the guide slider to drive the adjusting roller to move quickly along the length direction of the guide slide groove, thereby effectively improving the storage efficiency of the adjusting roller for the middle section of the traction chain and further improving the safety of the device.

[0024] 3. By setting up the sealing component for coordinated use with the elastic air storage bag, the air guide tube and the elastic sealing air bag, when the driving is embedded in the lifting slide groove to form a closure on the inside of the door frame, the door panel pushes the sealing component to squeeze the elastic air storage bag, and the gas inside the elastic air storage bag passes through the air guide tube into the elastic sealing air bag, so that the elastic sealing air bag expands and fills the gap between the door panel and the lifting slide groove, thereby effectively improving the sealing effect between the door panel and the lifting slide groove. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] Figure 1 It is a schematic diagram of the three-dimensional structure of the device body in this application.

[0026] Figure 2 It is a schematic diagram of the internal structure of the door frame and the T-shaped mounting cover in this application.

[0027] Figure 3 It is a schematic diagram of the three-dimensional structure of the sensing component in this application.

[0028] Figure 4 It is an internal exploded view of the lifting chute and the extrusion bin in this application.

[0029] Description of reference numerals: 1. Door frame; 2. T-shaped mounting cover; 3. Lifting slide; 4. Door panel; 5. Unwinding roller; 6. Traction chain; 7. Guide slide; 8. Guide slider; 9. Adjusting roller; 10. Adjusting slide; 11. Adjusting slider; 12. Adjusting rod; 13. Adjusting electric push rod; 14. Adjusting rack one; 15. Adjusting gear; 16. Adjusting rack two; 17. Worm; 18. Driving motor; 19. Worm wheel; 20. Infrared scanner; 21. Controller; 22. I-shaped limit ring; 23. U-shaped rubber anti-collision pad; 24. Extrusion chamber; 25. Elastic air storage bag; 26. Elastic sealing air bag; 27. Air guide tube; 28. Extrusion slide; 29. ​​Resistance slide. DETAILED DESCRIPTION

[0030] The following is combined with Figure 1-4 This application is described in further detail.

[0031] An embodiment of the present application discloses a civil defense door with a safety mechanism.

[0032] Reference Figure 1-Figure 3 A human defense door with a safety mechanism comprises a door frame 1, a T-shaped mounting cover 2 is fixedly connected to the top of the door frame 1, a lifting slide 3 is provided on the inner side of the door frame 1, a door panel 4 is slidably connected to the lifting slide 3, the top of the door panel 4 extends to the inside of the T-shaped mounting cover 2, a reel 5 is rotatably connected to the inside of the T-shaped mounting cover 2, a traction chain 6 is symmetrically fixedly connected to one end of the reel 5, a pair of guide slides 7 are symmetrically provided at one end of the door frame 1, a guide slider 8 is slidably connected to the inside of the guide slide 7, an adjusting roller 9 is rotatably connected between the two oppositely arranged guide sliders 8, and one end of the traction chain 6 passes around an adjusting roller along an S-shaped track. The bottom of the roller 9 is fixedly connected to the top of another adjusting roller 9 and the top of the unwinding roller 5. An adjusting slot 10 is symmetrically provided at one end of the door frame 1. An adjusting slider 11 is slidably connected inside the adjusting slot 10. An adjusting electric push rod 13 is fixedly connected to one side of the door frame 1. An adjusting rod 12 is symmetrically hinged at the output end of the adjusting electric push rod 13. One end of the adjusting rod 12 is hinged to the adjusting slider 11. A transmission component for driving the guide slider 8 to move along the length direction of the guide slot 7 is installed at one end of the adjusting slider 11. A driving component for driving the unwinding roller 5 to rotate is installed inside the door frame 1. An induction component is installed at one end of the door panel 4. The transmission assembly includes an adjustment rack 14 fixedly connected to one end of the guide slider 8, an adjustment gear 15 meshing with the adjustment rack 14 is rotatably connected to one end of the adjustment slider 11, and an adjustment rack 2 16 meshing with the adjustment gear 15 is symmetrically fixedly connected to one side of the door frame 1; Moreover, the driving assembly includes a worm 17 rotatably connected to the inside of the door frame 1, a driving motor 18 is fixedly connected to the inside of the door frame 1, an output end of the driving motor 18 is fixedly connected to the worm 17, and one end of the unwinding roller 5 is fixedly connected to a worm wheel 19 meshing with the worm 17; Moreover, the sensing component includes an infrared scanner 20 fixedly connected to the bottom of the door panel 4, and one end of the door frame 1 is fixedly connected to a controller 21, and the controller 21 is electrically connected to the infrared scanner 20, the drive motor 18, and the adjustment electric push rod 13; Moreover, one end of the adjusting roller 9 is symmetrically fixedly connected with an adjusting slider 11, and one end of the traction chain 6 passes around the inside of the I-shaped limiting ring 22; Furthermore, a U-shaped rubber anti-collision pad 23 is symmetrically fixedly connected to the bottom of the door panel 4 .

[0033] When in use, firstly, the infrared scanner 20 is set to monitor and scan the internal range of the door frame 1 in real time, and then the drive motor 18 is started to drive the worm 17 to rotate, and the worm 17 is meshed with the worm wheel 19, so as to drive the worm wheel 19 to drive the unwinding roller 5 to rotate, and then the unwinding roller 5 completes the unwinding of the traction chain 6, and at the same time, under the action of gravity, the door panel 4 pulls one end of the traction chain 6 around the bottom of one adjusting roller 9 and the top of another adjusting roller 9, and then moves downward along the length direction of the lifting chute 3, so that the door panel 4 completes the closing operation of the door frame 1 along the length direction of the lifting chute 3, and at the same time, one end of the traction chain 6 is embedded in the I-shaped limit ring 22 when it passes around one end of the adjusting roller 9; When the door panel 4 closes the door frame 1 along the length direction of the lifting chute 3, the infrared scanner 20 sends a danger signal to the controller 21 when it detects that someone is still passing through the door frame 1, and the controller 21 immediately controls the drive motor 18 to shut down, thereby stopping the unwinding roller 5 from unwinding the traction chain 6, so as to prevent the door panel 4 from continuing to descend along the length direction of the lifting chute 3 and causing harm to personnel. At the same time, the U-shaped rubber anti-collision pad 23 is provided to wrap the bottom of the door panel 4 for protection, so that the door panel 4 forms a flexible contact with the human body through the U-shaped rubber anti-collision pad 23, so as to reduce the damage caused by the collision between the door panel 4 and the human body. At the same time, the controller 21 quickly starts the adjusting electric push rod 13 to push one end of the adjusting rod 12 upward along the length direction of the lifting slide 3, and the two adjusting rods 12 are made to deflect away from each other around the hinged end with the adjusting electric push rod 13, and at the same time, one end of the adjusting rod 12 pushes the adjusting slider 11 to move along the length direction of the adjusting slide 10, and the adjusting slider 11 drives the adjusting gear 15 to form synchronous meshing with the adjusting rack 2 16 and the adjusting rack 1 14, so that the two adjusting gears 15 drive the two adjusting racks 14 to drive the guide slider 8 to move away from each other along the length direction of the guide slide 7, so that the two guide sliders 8 can move away from each other. The guide slider 8 drives the two adjusting rollers 9 to move away from each other along the length direction of the guide slide 7, and makes one end of the two adjusting rollers 9 form rolling friction with the traction chain 6 respectively, and pushes the middle section of the traction chain 6 to unfold along the length direction of the guide slide 7, and at the same time makes the bottom end of the traction chain 6 pull the door panel 4 to move upward along the length direction of the lifting slide 3, so that when the infrared scanner 20 detects that there are still people passing through the door frame 1, the door panel 4 is pulled upward along the length direction of the lifting slide 3 in time, thereby reducing the situation where the door panel 4 squeezes the people along the length direction of the lifting slide 3, and effectively improves the safety of the device.

[0034] Reference Figure 1 and Figure 2 , Figure 4The door frame 1 has an extrusion bin 24 provided inside, an elastic air storage bag 25 fixedly connected inside the extrusion bin 24, an elastic sealing air bag 26 fixedly connected inside the lifting chute 3, an air guide tube 27 symmetrically fixedly connected to one end of the elastic air storage bag 25, one end of the air guide tube 27 passes through the door frame 1 and is connected to the elastic sealing air bag 26, and a sealing component for extruding the elastic air storage bag 25 is installed inside the extrusion bin 24; The sealing assembly includes an extrusion slide 28 slidably connected to the inside of the extrusion bin 24 , and a resisting slide 29 is symmetrically fixedly connected to the top of the extrusion slide 28 , one end of the resisting slide 29 passes through the door frame 1 and forms a sliding connection with the door frame 1 .

[0035] When in use, when the driving component is started to drive the unwinding roller 5 to unwind the traction chain 6, so that one end of the door panel 4 moves downward along the length direction of the lifting slide slot 3 and forms a closure on the inside of the door frame 1, the door panel 4 cooperates with gravity to squeeze the resistance slide bar 29 along the length direction of the lifting slide slot 3, and one end of the resistance slide bar 29 passes through the door frame 1, and pushes the extrusion slide plate 28 to squeeze the elastic air storage bag 25 to produce a contraction deformation, and at the same time, the gas inside the elastic air storage bag 25 is squeezed by the extrusion slide plate 28, passes through the air guide pipe 27 and enters the elastic sealing air bag 26, so that the elastic sealing air bag 26 produces an expansion deformation inside the lifting slide slot 3, and one end of the elastic sealing air bag 26 forms a resistance with the door panel 4, so that the elastic sealing air bag 26 fills the gap between the door panel 4 and the lifting slide slot 3, effectively improving the sealing effect between the door panel 4 and the lifting slide slot 3.

[0036] The implementation principle of the civil air defense door with a safety mechanism in this embodiment is as follows: first, an infrared scanner 20 is set to monitor and scan the internal range of the door frame 1 in real time, and then the drive motor 18 is started to drive the worm 17 to rotate, and the worm 17 is meshed with the worm wheel 19, thereby driving the worm wheel 19 to drive the unwinding roller 5 to rotate, so that the unwinding roller 5 completes the unwinding of the traction chain 6, and at the same time, the door panel 4, under the action of gravity, pulls one end of the traction chain 6 around the bottom of one adjusting roller 9 and the top of another adjusting roller 9, and then moves downward along the length direction of the lifting chute 3, so that the door panel 4 completes the closing operation of the door frame 1 along the length direction of the lifting chute 3; At the same time, when one end of the door panel 4 moves downward along the length direction of the lifting slot 3 and forms a seal on the inside of the door frame 1, the door panel 4 cooperates with gravity to squeeze the resistance slide bar 29 along the length direction of the lifting slot 3, and one end of the resistance slide bar 29 passes through the door frame 1 and pushes the extrusion slide plate 28 to squeeze the elastic air storage bag 25 to produce a contraction deformation. At the same time, the gas inside the elastic air storage bag 25 is squeezed by the extrusion slide plate 28 and passes through the air guide pipe 27 into the elastic sealing air bag 26, so that the elastic sealing air bag 26 produces an expansion deformation inside the lifting slot 3, and one end of the elastic sealing air bag 26 is in conflict with the door panel 4, so that the elastic sealing air bag 26 fills the gap between the door panel 4 and the lifting slot 3. Then, when the infrared scanner 20 detects that someone is still passing through the door frame 1, the infrared scanner 20 sends a danger signal to the controller 21, and the controller 21 immediately controls the drive motor 18 to shut down, thereby stopping the unwinding roller 5 from unwinding the traction chain 6 to prevent the door panel 4 from continuing to descend along the length direction of the lifting slide 3 and causing harm to personnel. At the same time, the controller 21 quickly starts the adjusting electric push rod 13 to push one end of the adjusting rod 12 upward along the length direction of the lifting slide 3, and makes the two adjusting rods 12 deflect away from each other around the hinged end of the adjusting electric push rod 13, and at the same time makes one end of the adjusting rod 12 push the adjusting slider 11 to move along the length direction of the adjusting slide 10, and makes the adjusting slider 11 drive the adjusting gear 15 and the adjusting rack 2 16 and the adjusting rack 1 14 forms a synchronous meshing, so that the two adjusting gears 15 drive the two adjusting racks 14 to drive the guide sliders 8 to move away from each other along the length direction of the guide slide groove 7, so that the two guide sliders 8 drive the two adjusting rollers 9 to move away from each other along the length direction of the guide slide groove 7, and one end of the two adjusting rollers 9 respectively forms a rolling conflict with the traction chain 6, and pushes the middle section of the traction chain 6 to unfold along the length direction of the guide slide groove 7, and at the same time, the bottom end of the traction chain 6 pulls the door panel 4 to move upward along the length direction of the lifting slide groove 3, so that when the infrared scanner 20 detects that there are still people passing through the door frame 1, the door panel 4 is pulled upward along the length direction of the lifting slide groove 3 in time, thereby reducing the situation where the door panel 4 squeezes the people along the length direction of the lifting slide groove 3.

Claims

1. A civil air defense door with a safety mechanism, comprising a door frame (1), characterized in that: The top of the door frame (1) is fixedly connected to a T-shaped mounting cover (2), the inner side of the door frame (1) is provided with a lifting slot (3), the interior of the lifting slot (3) is slidably connected to a door panel (4), the top of the door panel (4) extends to the interior of the T-shaped mounting cover (2), the interior of the T-shaped mounting cover (2) is rotatably connected to a reeling roller (5), one end of the reeling roller (5) is symmetrically fixedly connected to a traction chain (6), one end of the door frame (1) is symmetrically provided with a pair of guide slots (7), the interior of the guide slots (7) is slidably connected to a guide slider (8), an adjusting roller (9) is rotatably connected between two guide sliders (8) arranged opposite to each other, one end of the traction chain (6) passes around the bottom of one adjusting roller (9) along an S-shaped track and is connected to the bottom of the other adjusting roller (9). The top of an adjusting roller (9) is fixedly connected to the top of an unwinding roller (5); one end of the door frame (1) is symmetrically provided with an adjusting slot (10); the inside of the adjusting slot (10) is slidably connected with an adjusting slider (11); one side of the door frame (1) is fixedly connected with an adjusting electric push rod (13); the output end of the adjusting electric push rod (13) is symmetrically hinged with an adjusting rod (12); one end of the adjusting rod (12) is hinged with the adjusting slider (11); one end of the adjusting slider (11) is installed with a transmission component for driving the guide slider (8) to move along the length direction of the guide slot (7); the inside of the door frame (1) is installed with a driving component for driving the unwinding roller (5) to rotate; and one end of the door panel (4) is installed with a sensing component.

2. The civil defense door with a safety mechanism according to claim 1, characterized in that: The transmission assembly comprises an adjustment rack 1 (14) fixedly connected to one end of the guide slider (8), an adjustment gear (15) rotatably connected to one end of the adjustment slider (11) and meshing with the adjustment rack 1 (14), and an adjustment rack 2 (16) meshing with the adjustment gear (15) is symmetrically fixedly connected to one side of the door frame (1).

3. The civil defense door with a safety mechanism according to claim 1, characterized in that: The drive assembly comprises a worm (17) rotatably connected to the interior of the door frame (1); a drive motor (18) is fixedly connected to the interior of the door frame (1); an output end of the drive motor (18) is fixedly connected to the worm (17); and one end of the unwinding roller (5) is fixedly connected to a worm wheel (19) meshing with the worm (17).

4. The civil defense door with a safety mechanism according to claim 1, characterized in that: The sensing component comprises an infrared scanner (20) fixedly connected to the bottom of the door panel (4); one end of the door frame (1) is fixedly connected to a controller (21); the controller (21) is electrically connected to the infrared scanner (20), the drive motor (18), and the adjusting electric push rod (13).

5. The civil defense door with a safety mechanism according to claim 1, characterized in that: One end of the adjusting roller (9) is symmetrically fixedly connected to an adjusting slider (11), and one end of the traction winding chain (6) passes around the inside of an I-shaped limiting ring (22).

6. The civil defense door with a safety mechanism according to claim 1, characterized in that: A U-shaped rubber anti-collision pad (23) is symmetrically fixedly connected to the bottom of the door panel (4).

7. The civil defense door with a safety mechanism according to claim 1, characterized in that: The door frame (1) is provided with an extrusion bin (24) inside, an elastic air storage bag (25) is fixedly connected inside the extrusion bin (24), an elastic sealing air bag (26) is fixedly connected inside the lifting slide groove (3), one end of the elastic air storage bag (25) is symmetrically fixedly connected to an air guide tube (27), one end of the air guide tube (27) passes through the door frame (1) and is in communication with the elastic sealing air bag (26), and a sealing component for extruding the elastic air storage bag (25) is installed inside the extrusion bin (24).

8. The civil defense door with a safety mechanism according to claim 7, characterized in that: The sealing assembly comprises an extrusion slide plate (28) slidably connected inside the extrusion bin (24); a resisting slide bar (29) is symmetrically fixedly connected to the top of the extrusion slide plate (28); one end of the resisting slide bar (29) passes through the door frame (1) and forms a slidable connection with the door frame (1).

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