A quick-locking type of air defense door

Abstract

This utility model discloses a quick-locking type air-raid shelter door, relating to the technical field of air-raid shelter doors. The utility model includes a door body, with a locking assembly located at the center of the inner side of the door body. The locking assembly includes two U-shaped frames fixedly connected above and below the center of the inner side of the door body, respectively. A first fixing plate and a second fixing plate are fixedly connected inside the U-shaped frames, with the two second fixing plates located between two adjacent first fixing plates. This utility model uses a movable plate to drive the first and second locking plates to engage, thereby connecting the output shaft of the dual-axis motor to the threaded rod. This prevents accidental reopening of the door by staff when it is closed, solving the problem of existing doors being difficult to open by staff error. Simultaneously, a connecting plate and a buffer spring connect the reinforcing mesh to the mounting plate, and the buffer spring enhances the buffering capacity of the reinforcing mesh, solving the problem of poor buffering capacity in existing doors.

Description

Technical Field

[0001] This utility model belongs to the technical field of civil defense engineering doors, and in particular relates to a quick-locking civil defense door. Background Technology

[0002] Civil defense engineering doors, also known simply as civil defense doors, are a type of special protective equipment used in civil defense projects to prevent shock waves, toxic gases, and radioactive dust from entering the interior of the project. According to the opening and closing method, they can be divided into swing type, sliding type, and drop type, and are widely used in underground civil defense projects, subway tunnels, underground garages, and ships.

[0003] A quick-locking type air defense door is disclosed in the existing authorization announcement document CN222526138U, including a door frame and an air defense door body. The air defense door body is hinged to one side of the door frame. The air defense door body has a sliding groove. A limit plate is fixedly connected in the sliding groove. A circular hole is opened on the limit plate. A fixed rod is slidably connected in the circular hole. A spring is sleeved on the fixed rod. A sliding block is fixedly connected to one end of the spring. An arc-shaped groove is opened on the sliding block. A rotating plate is slidably connected in the sliding groove.

[0004] However, it still has the following drawbacks in practical use:

[0005] 1. The above-mentioned air defense door uses a rotating plate to drive the spring to compress, which in turn causes the sliding block to drive the fixed rod to move, thereby locking the fixed rod into the fixed hole, thus achieving quick locking of the air defense door and the door frame. However, during use, it lacks an anti-accidental opening structure, which can lead to the air defense door being accidentally opened due to staff errors, resulting in poor safety.

[0006] 2. The air-raid shelter doors mentioned above achieve their impact resistance function through an internal steel mesh structure. However, during use, due to the poor buffering capacity of the steel bars, they are prone to breakage due to excessive impact force, which in turn affects their overall impact resistance.

[0007] To address these issues, we provide a quick-locking type of air-raid shelter door. Utility Model Content

[0008] The purpose of this utility model is to provide a quick-locking type air defense door. A movable plate drives the first and second locking plates to engage, thereby connecting the output shaft of the dual-axis motor to the threaded rod. This prevents workers from accidentally reopening the door when it is closed, solving the problem of existing doors being difficult to open by mistake. Simultaneously, a connecting plate and a buffer spring connect the steel mesh to the mounting plate, and the buffer spring enhances the buffering capacity of the steel mesh, addressing the problem of poor buffering capacity in existing systems.

[0009] To solve the above-mentioned technical problems, this utility model is achieved through the following technical solution:

[0010] This utility model relates to a quick-locking type air-raid shelter door, comprising a door body. A locking assembly is located at the center of the inner side of the door body. The locking assembly includes two U-shaped frames fixedly connected above and below the center of the inner side of the door body, respectively. A first fixing plate and a second fixing plate are fixedly connected inside the U-shaped frames. Two second fixing plates are located between two adjacent first fixing plates. A dual-axis motor is fixedly connected between the two adjacent U-shaped frames. The output shafts of the dual-axis motors pass through the second fixing plates and are fixedly connected to a first retaining plate. A threaded rod is rotatably connected inside each U-shaped frame. One end of the threaded rod passes through the first fixing plate and is fitted with a second retaining plate. A movable plate is fitted onto the outer wall of the second retaining plate. The movable plate is located between the first fixed plate and the second fixed plate. L-shaped plates are fixedly connected to both outer walls of the movable plate. Electromagnets are fixedly connected to the facing surfaces of the second fixed plate and the L-shaped plates. Buffer components are provided at the front and rear ends of the inner side of the door. The buffer components include two steel meshes fixedly connected to the front and rear ends of the inner side of the door and mounting plates fixedly connected to the inner walls of both sides of the door. Connecting plates are movably connected to the front and rear ends of the mounting plates. The end face of the connecting plate away from the mounting plate is fixedly connected to the steel mesh. A buffer spring is fixedly connected to the center of the end face of the connecting plate near the mounting plate. The end of the buffer spring away from the connecting plate is fixedly connected to the front and rear end faces of the mounting plate.

[0011] A further feature of this invention is that a motor frame is fixedly connected between two adjacent U-shaped frames, and a dual-axis motor is fixedly connected inside the motor frame.

[0012] A further feature of this invention is that a cross-shaped slot is provided on the surface of the first card holder near the second card holder, and a cross-shaped card block is fixedly connected to the surface of the second card holder near the first card holder.

[0013] A further feature of this invention is that: a slider is threadedly connected to the outer wall of the threaded rod, and a locking pin is movably connected to both sides of the slider; a third fixing plate is located above and below the inner walls on both sides of the door body; a sleeve passes through the outer wall of the third fixing plate; and the end of the locking pin away from the slider passes through the sleeve and extends to the outside of the door body.

[0014] A further feature of this invention is that connecting strips are movably connected to both outer walls of the slider, with the end of the connecting strip furthest from the slider being movably connected to the end of the locking post closest to the slider.

[0015] A further feature of this invention is that: a sliding rod is fixedly connected to each of the four sides of the first fixed plate and the second fixed plate, and the four corners of the movable plate are slidably sleeved on the outer wall of the sliding rod.

[0016] A further feature of this invention is that the reinforcing mesh includes a frame fixedly connected to the inner wall of the door, with multiple vertical reinforcing bars fixedly connected at equal intervals along the left-right direction inside the frame, and multiple horizontal reinforcing bars fixedly connected at equal intervals along the up-down direction inside the frame, and the vertical and horizontal reinforcing bars are welded together.

[0017] A further feature of this invention is that a damping box extends through both the upper and lower surfaces of the mounting plate, and a movable rod extends through both the front and rear ends of the damping box. One end of the movable rod located outside the damping box is fixedly connected to the end face of the connecting plate near the mounting plate, and the other end of the movable rod located inside the damping box is fixedly connected to a limiting plate.

[0018] This utility model has the following beneficial effects:

[0019] 1. This utility model, by setting up a locking component and connecting the power supply to the electromagnet, causes the electromagnets on the first and second locking plates to exhibit different magnetic properties. Under the attraction of opposite poles, the L-shaped plate drives the movable plate and the second locking plate to move, thereby locking the first and second locking plates together. This facilitates the connection of the dual-axis motor and the threaded rod, enabling quick locking or opening of the door through the dual-axis motor and the threaded rod. It also prevents the door from being opened due to operator error, thus enhancing its safety performance.

[0020] 2. This utility model, by setting up a buffer component, allows the impact force to be transmitted through the door to the steel mesh when the door is subjected to impact, causing the steel mesh to deform. This deformation causes the connecting plate to move relative to the mounting plate, compressing the buffer spring. The spring's own elastic deformation and reset action allows the steel mesh to return to its initial state, enhancing its buffering capacity and preventing breakage due to excessive impact. This improves the buffering capacity of the steel mesh and enhances the door's protective capabilities. Attached Figure Description

[0021] To more clearly illustrate the technical solutions of the embodiments of this utility model, the accompanying drawings used in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0022] Figure 1 This is a schematic diagram of the overall structure of this utility model.

[0023] Figure 2 This is a side sectional view of the door body of this utility model.

[0024] Figure 3 This is a schematic diagram of the locking assembly of this utility model.

[0025] Figure 4 This is a structural disassembly diagram of the U-shaped frame of this utility model.

[0026] Figure 5 This is a structural disassembly diagram of the first fixed plate, the second fixed plate, and the movable plate of this utility model.

[0027] Figure 6 This is a structural disassembly diagram of the locking pin and sleeve of this utility model.

[0028] Figure 7 This is a schematic diagram of the structure of the buffer component of this utility model.

[0029] Figure 8 This is a schematic diagram of the steel mesh structure of this utility model.

[0030] Figure 9 This is a structural disassembly diagram of the mounting plate and connecting plate of this utility model.

[0031] The attached diagram lists the components represented by each number as follows:

[0032] 1-Door body, 2-Locking assembly, 201-U-shaped frame, 201a-First fixing plate, 201b-Second fixing plate, 202-Dual-axis motor, 202a-Motor frame, 202b-First locking plate, 202c-Cross slot, 203-Threaded rod, 203a-Second locking plate, 203b-Cross block, 204-Slider, 205-Connecting strip, 206-Locking post, 207-Sleeve 207a-Third fixed plate, 208-Modible plate, 208a-Sliding rod, 208b-L-shaped plate, 208c-Electromagnet, 3-Buffer assembly, 301-Steel mesh, 301a-Frame, 301b-Vertical steel bar, 301c-Horizontal steel bar, 302-Mounting plate, 302a-Damping box, 302b-Modible rod, 302c-Limiting plate, 303-Connecting plate, 304-Buffer spring. Detailed Implementation

[0033] 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 skilled in the art without creative effort are within the protection scope of the present utility model.

[0034] Example 1

[0035] Please see Figure 1 , Figure 2 , Figure 3 , Figure 4 , Figure 5 and Figure 6 As shown, this is the first embodiment of the present invention. This embodiment provides a quick-locking type air defense door, including a door body 1. A locking assembly 2 is provided at the center of the inner side of the door body 1. The locking assembly 2 includes a U-shaped frame 201, a dual-axis motor 202, a threaded rod 203, and a movable plate 208. The movable plate 208 drives the first locking plate 202b and the second locking plate 203a to engage, thereby connecting the output shaft of the dual-axis motor 202 with the threaded rod 203. This prevents the door body 1 from being accidentally reopened by staff when it is closed, thus solving the problem of existing doors that are inconvenient to prevent staff from accidentally opening the door body 1.

[0036] Specifically, two U-shaped frames 201 are provided and fixedly connected to the upper and lower parts of the inner center of the door body 1, respectively. A first fixing plate 201a and a second fixing plate 201b are fixedly connected inside the U-shaped frame 201. The two second fixing plates 201b are located between two adjacent first fixing plates 201a. A dual-axis motor 202 is fixedly connected between the two adjacent U-shaped frames 201. The output shafts of the dual-axis motors 202 pass through the second fixing plates 201b and are fixedly connected to a first retaining plate 202b. The U-shaped frame 201 is internally connected to threaded rods 203. One end of the threaded rod 203 passes through the first fixed plate 201a and is fitted with a second retaining plate 203a. A movable plate 208 is fitted on the outer wall of the second retaining plate 203a. The movable plate 208 is located between the first fixed plate 201a and the second fixed plate 201b. L-shaped plates 208b are fixedly connected to both outer walls of the movable plate 208. The opposing surfaces of the second fixed plate 201b and the L-shaped plates 208b are fixedly connected to... The system includes an electromagnet 208c and a U-shaped frame 201 for mounting the dual-axis motor 202, threaded rod 203, and other components. A first fixing plate 201a is used to mount the threaded rod 203 inside the U-shaped frame 201. A second fixing plate 201b is used to mount the output shaft of the dual-axis motor 202 inside the U-shaped frame 201. The dual-axis motor 202 and threaded rod 203 are used for quick locking of the door 1. A first locking plate 202b and a second locking plate 202b are also included. The 03a is configured to connect the output shaft of the dual-axis motor 202 to the threaded rod 203. The second retaining plate 203a is slidably sleeved on the non-threaded section of the threaded rod 203 via a keyway. The movable plate 208 is configured to drive the second retaining plate 203a to move relative to the first retaining plate 202b. The L-shaped frame is configured to mount the electromagnet 208c on the movable plate 208. The electromagnet 208c is configured to drive the movable plate 208 to move relative to the first fixed plate 201a.

[0037] Furthermore, a motor frame 202a is fixedly connected between two adjacent U-shaped frames 201, and a dual-shaft motor 202 is fixedly connected inside the motor frame 202a;

[0038] A cross-shaped slot 202c is provided on the surface of the first card receiving plate 202b near the second card receiving plate 203a, and a cross-shaped card block 203b is fixedly connected to the surface of the second card receiving plate 203a near the first card receiving plate 202b.

[0039] The outer wall of the threaded rod 203 is threaded with a slider 204. Both sides of the slider 204 are movably connected with locking pins 206. The upper and lower sides of the inner walls on both sides of the door body 1 are each equipped with a third fixing plate 207a. The outer wall of the third fixing plate 207a is penetrated by a sleeve 207. The end of the locking pin 206 away from the slider 204 passes through the sleeve 207 and extends to the outside of the door body 1.

[0040] Connecting strips 205 are movably connected to both outer walls of the slider 204. The end of the connecting strip 205 away from the slider 204 is movably connected to the end of the locking post 206 near the slider 204.

[0041] Slide rods 208a are fixedly connected to the four sides of the first fixed plate 201a and the second fixed plate 201b, and the four corners of the movable plate 208 are slidably sleeved on the outer wall of the slide rods 208a.

[0042] The operation process of this embodiment is as follows: the power supply of electromagnet 208c is turned on, so that the electromagnets 208c on the first locking plate 202b and the second locking plate 203a exhibit different magnetic properties. Under the attraction of opposite poles, the L-shaped plate 208b drives the movable plate 208 and the second locking plate 203a to move, so that the first locking plate 202b and the second locking plate 203a are locked together. The dual-axis motor 202 is started. The output shaft of the dual-axis motor 202 drives the threaded rod 203 to move. The threaded rod 203 drives the locking pin 206 to move through the slider 204 and the connecting bar 205. Thus, one end of the locking pin 206 passes through the sleeve 207 and is fitted with a gap in the locking hole located on the door frame, realizing the rapid locking of the door 1.

[0043] Example 2

[0044] Please see Figure 1 , Figure 7 , Figure 8 and Figure 9 As shown, this is the second embodiment of the present invention. This embodiment is based on the previous embodiment, but differs from the previous embodiment in that: buffer components 3 are provided at both the front and rear ends of the inner side of the door body 1. The buffer components 3 include a steel mesh 301, a mounting plate 302, a connecting plate 303, and a buffer spring 304. The steel mesh 301 is connected to the mounting plate 302 through the connecting plate 303 and the buffer spring 304, and the buffering capacity of the steel mesh 301 is enhanced by the buffer spring 304, thus solving the problem of poor buffering capacity in the existing system.

[0045] Specifically, two steel meshes 301 are provided and fixedly connected to the front and rear ends of the inner side of the door body 1, respectively. Multiple mounting plates 302 are provided and fixedly connected to the inner walls of both sides of the door body 1 at equal intervals along the vertical direction. Connecting plates 303 are movably connected to the front and rear ends of the mounting plates 302. The end face of the connecting plate 303 away from the mounting plate 302 is fixedly connected to the steel mesh 301. A buffer spring 304 is fixedly connected to the center of the end face of the connecting plate 303 near the mounting plate 302. The end of the buffer spring 304 away from the connecting plate 303 is fixedly connected to the front and rear end faces of the mounting plate 302, respectively. The steel mesh 301 is provided to enhance the impact resistance of the door body 1. The mounting plates 302 are provided to install the connecting plates 303 and other structures. The connecting plates 303 and the buffer springs 304 are provided to connect the steel mesh 301 and the mounting plates 302, and the buffer springs 304 enhance the buffering capacity of the steel mesh 301.

[0046] Furthermore, the steel mesh 301 includes a frame 301a fixedly connected to the inner wall of the door body 1. Multiple vertical steel bars 301b are fixedly connected at equal intervals in the left-right direction inside the frame 301a. Multiple horizontal steel bars 301c are fixedly connected at equal intervals in the up-down direction inside the frame 301a. The vertical steel bars 301b and the horizontal steel bars 301c are welded to each other.

[0047] Damping boxes 302a are inserted through both the top and bottom surfaces of the mounting plate 302. Movable rods 302b are inserted through the front and rear ends of the damping boxes 302a. One end of the movable rod 302b located outside the damping box 302a is fixedly connected to the end face of the connecting plate 303 near the mounting plate 302. One end of the movable rod 302b located inside the damping box 302a is fixedly connected to a limit plate 302c.

[0048] The rest of the structure is the same as in Example 1.

[0049] The operation process of this embodiment is as follows: When the door 1 is subjected to an impact force, the impact force is transmitted to the steel mesh 301 through the door 1, thereby causing the steel mesh 301 to deform. Since the deformation of the steel mesh 301 causes the connecting plate 303 to move relative to the mounting plate 302, the buffer spring 304 will be compressed. Under the action of the elastic deformation reset of the buffer spring 304, the steel mesh 301 will recover to the initial state, thereby enhancing the buffering capacity of the steel mesh 301.

[0050] In the description of this specification, references to terms such as "an embodiment," "example," "specific example," etc., indicate that a specific feature, structure, material, or characteristic described in connection with that embodiment or example is included in at least one embodiment or example of the present invention. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples.

[0051] The preferred embodiments of this utility model disclosed above are merely illustrative of the present utility model. These preferred embodiments do not exhaustively describe all details, nor do they limit the utility model to the specific implementations described. Clearly, many modifications and variations can be made based on the content of this specification. This specification selects and specifically describes these embodiments to better explain the principles and practical applications of this utility model, thereby enabling those skilled in the art to better understand and utilize it.

Claims

1. A quick-locking civil air defense door, comprising a door body (1), characterized in that: A locking assembly (2) is provided at the inner center of the door body (1), and the locking assembly (2) includes two U-shaped frames (201) fixedly connected above and below the inner center of the door body (1). A first fixing plate (201a) and a second fixing plate (201b) are fixedly connected inside the U-shaped frame (201), and the two second fixing plates (201b) are located between the two adjacent first fixing plates (201a). A dual-axis motor is fixedly connected between the two adjacent U-shaped frames (201). 202), and the output shafts of the dual-axis motors (202) all pass through the second fixed plate (201b) and are fixedly connected to the first retaining plate (202b). The U-shaped frame (201) is rotatably connected to a threaded rod (203), and one end of the threaded rod (203) passes through the first fixed plate (201a) and is fitted with a second retaining plate (203a). A movable plate (208) is fitted on the outer wall of the second retaining plate (203a), and the movable plate (208) is located on the first fixed plate (201a). 01a) Between the second fixed plate (201b) and the adjacent movable plate (208), L-shaped plates (208b) are fixedly connected to the outer walls of both sides of the movable plate (208), and electromagnets (208c) are fixedly connected to the facing surfaces of the second fixed plate (201b) and the L-shaped plates (208b). Buffer components (3) are provided at the front and rear ends of the inner side of the door body (1), and the buffer components (3) include two steel meshes (301) fixedly connected to the front and rear ends of the inner side of the door body (1) respectively, and fixedly connected to the door body. (1) Mounting plates (302) on both inner walls, with connecting plates (303) movably connected to the front and rear ends of the mounting plates (302), and the end face of the connecting plates (303) away from the mounting plates (302) is fixedly connected to the steel mesh (301). A buffer spring (304) is fixedly connected to the center of the end face of the connecting plates (303) near the mounting plates (302), and the end of the buffer spring (304) away from the connecting plates (303) is fixedly connected to the front and rear end faces of the mounting plates (302).

2. The quick-locking civil defense door according to claim 1, characterized in that, Two adjacent U-shaped frames (201) are fixedly connected to a motor frame (202a), and a dual-axis motor (202) is fixedly connected inside the motor frame (202a).

3. The quick-locking civil defense door according to claim 1, characterized in that, A cross-shaped slot (202c) is provided on the surface of the first card holder (202b) near the second card holder (203a), and a cross-shaped card block (203b) is fixedly connected to the surface of the second card holder (203a) near the first card holder (202b).

4. The quick-locking civil defense door according to claim 1, characterized in that, The outer wall of the threaded rod (203) is threaded with a slider (204), and both sides of the slider (204) are movably connected with locking pins (206). The upper and lower sides of the inner walls on both sides of the door body (1) are each equipped with a third fixing plate (207a), and the outer wall of the third fixing plate (207a) is permeated with a sleeve (207). The end of the locking pin (206) away from the slider (204) passes through the sleeve (207) and extends to the outside of the door body (1).

5. A quick-locking type air-raid shelter door according to claim 4, characterized in that, Connecting strips (205) are movably connected to both outer walls of the slider (204), and the end of the connecting strip (205) away from the slider (204) is movably connected to the end of the locking post (206) near the slider (204).

6. The quick-locking civil defense door according to claim 1, characterized in that, The first fixed plate (201a) and the second fixed plate (201b) are each fixedly connected with a sliding rod (208a) around their perimeter, and the four corners of the movable plate (208) are slidably sleeved on the outer wall of the sliding rod (208a).

7. The quick-locking civil defense door according to claim 1, characterized in that, The steel mesh (301) includes a frame (301a) fixedly connected to the inner wall of the door (1), and multiple vertical steel bars (301b) are fixedly connected at equal intervals in the left-right direction inside the frame (301a), and multiple horizontal steel bars (301c) are fixedly connected at equal intervals in the up-down direction inside the frame (301a), and the vertical steel bars (301b) and the horizontal steel bars (301c) are welded to each other.

8. The quick-locking civil defense door according to claim 1, characterized in that, Damping boxes (302a) are inserted through both the upper and lower surfaces of the mounting plate (302), and movable rods (302b) are inserted through the front and rear ends of the damping boxes (302a). The end of the movable rod (302b) located outside the damping box (302a) is fixedly connected to the end face of the connecting plate (303) near the mounting plate (302), and the end of the movable rod (302b) located inside the damping box (302a) is fixedly connected to a limiting plate (302c).

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