Novel civil defense door locking device

Abstract

The utility model relates to the technical field of civil air defense door locking devices, in particular to a novel civil air defense door locking device which is installed inside a horizontal blocking door plate, and a locking head seat is installed on a door frame surrounding the horizontal blocking door plate. Comprising a control transmission assembly and a locking transmission assembly. The control transmission assembly comprises a first reverser, a rotary transmission rod and two rotary limiting rods; the rotating transmission end of the rotating transmission rod is in transmission connection with the main control end of the first reverser, and the manual intervention end of the rotating transmission rod penetrates out of the horizontal blocking door plate; one end of the rotating limiting rod is in transmission connection with the controlled end of the first reverser, the other end of the rotating limiting rod is in transmission connection with the two sets of locking transmission assemblies through the second reverser, locking heads are installed at the two ends of the two sets of locking transmission assemblies, the locking heads can movably penetrate out of the horizontal blocking door plate, and the locking heads and the locking head bases are arranged in a matched mode. According to the utility model, the technical problems of low operation efficiency and low safety in the operation process of operators can be solved.

Description

Technical Field

[0001] The utility model relates to the technical field of air defense door locking devices, in particular to a new type of air defense door locking device. Background Technique

[0002] For large underground complexes and subway stations that take into account air defense requirements, the protection design of the ventilation shaft openings is crucial, directly related to the rapidity and effectiveness of wartime emergency responses. Currently, the widely used civil air defense equipment is horizontal plugging door panels, which mainly include multiple combined horizontal plugging door panels and large protective airtight doors. These designs can effectively plug the ventilation shaft openings during wartime, prevent external threats from invading, and ensure the safety of the underground space.

[0003] Specifically, in an emergency, multiple combined horizontal plugging door panels need to be quickly and accurately installed in place. During this process, the horizontal plugging door panels need to be horizontally covered on the ventilation shaft opening and the door frame of the protective airtight door one by one to form a solid barrier. To ensure the stability of the horizontal plugging door panels, the traditional method is to tightly fix them to the door frame through the locking device on the horizontal plugging door panels, or directly use welding technology for permanent connection. However, although this fixing method is effective, it also exposes many inconveniences in actual operation.

[0004] Particularly prominent is that the traditional locking operation handle is often designed in the central position on the front of the horizontal plugging door panel, which means that during the locking operation, the operator has to climb onto the horizontal plugging door panel to rotate the handwheel. Such an operation method not only requires the operator to have high physical fitness and balance ability, but also greatly increases the risk factor during the operation. Once the operation is not careful, safety accidents such as falling may occur, seriously threatening the life safety of the operator. At the same time, due to the limitation of the operation position, the operation efficiency is also low, making it difficult to meet the requirements of rapid response during wartime. Content of the Utility Model

[0005] The purpose of the utility model is to propose a new type of air defense door locking device, which can solve the technical problems of low operation efficiency and low safety of the operator during the operation process.

[0006] To achieve this purpose, the utility model adopts the following technical solutions:

[0007] A new type of air defense door locking device is installed inside the horizontal plugging door panel, and a locking head seat is installed around the door frame of the horizontal plugging door panel;

[0008] The new type of air defense door locking device includes a control transmission component and a locking transmission component;

[0009] The control transmission assembly includes a first commutator, a rotating transmission rod, and two rotating limit rods;

[0010] The first commutator includes a main control end and two controlled ends;

[0011] One end of the rotating transmission rod is a rotating transmission end, the rotating transmission end is drivingly connected to the main control end of the first commutator, the other end of the rotating transmission rod is a manual intervention end, and the manual intervention end penetrates through the horizontal sealing door panel;

[0012] One end of the rotating limit rod is drivingly connected to the controlled end of the first commutator, the other end of the rotating limit rod is drivingly connected to two groups of the locking transmission assemblies through a second commutator, locking heads are installed at both ends of the two groups of the locking transmission assemblies, the locking heads are movably arranged to penetrate through the horizontal sealing door panel, and the locking heads are arranged in cooperation with the locking head seats;

[0013] When an external force acts on the manual intervention end to cause the rotating transmission rod to rotate self - rotatably, the rotating limit rod rotates following the self - rotation of the rotating transmission rod through the first commutator, the locking transmission assemblies rotate following the rotation of the rotating limit rod through the second commutator, and the locking heads of the two groups of the locking transmission assemblies located on the same second commutator move closer to or away from the second commutator, and the moving motion realizes the change of the locking state or unlocking state between the locking heads and the locking head seats.

[0014] Preferably, a manual crank is detachably installed outside the manual intervention end.

[0015] Preferably, a sealing end cover and an O - ring seal are installed between the outside of the manual intervention end and the manual crank.

[0016] Preferably, the locking transmission assembly includes a locking transmission rod;

[0017] The second commutator is installed in the horizontal sealing door panel through a commutator mounting seat, and the second commutator includes a main direction end and two slave direction ends;

[0018] One end of the two locking transmission rods is a slave direction connection end, the slave direction connection end is drivingly connected to the slave direction end of the second commutator, one end of the two locking transmission rods is a locking installation end, and the locking head is installed at the locking installation end;

[0019] The main direction end of the second commutator is drivingly connected to the other end of the rotating limit rod.

[0020] Preferably, a thrust assembly is installed between the slave direction connection end of the locking transmission rod and the slave direction end of the second commutator.

[0021] Preferably, the thrust assembly includes a bushing and a transmission lead screw;

[0022] A coupling is installed between the longitudinal end of the second commutator and the bushing, and an internal thread is provided inside the bushing;

[0023] The transmission lead screw is rotatably installed in the bushing, and one end of the transmission lead screw with an external thread is threadedly connected to the internal thread of the bushing, and the other end of the transmission lead screw is drivingly connected to the longitudinal connection end of the locking transmission rod.

[0024] Preferably, a thrust bearing is rotatably installed outside the bushing.

[0025] Preferably, it further includes a locking sleeve, the locking sleeve is installed in the horizontal sealing door panel, and a plugging space is provided inside the locking sleeve for the locking head to be movably plugged in.

[0026] Preferably, the first commutator is a worm reducer.

[0027] Preferably, the second commutator is a commutation reducer.

[0028] One of the above technical solutions has the following beneficial effects:

[0029] (1) Compact structure and enhanced protection: The whole set of device is embedded inside the civil air defense door panel, which not only reduces the occupation of external space, but also enhances the protection performance of the device through the protection of the horizontal sealing door panel, making it more durable and safe.

[0030] (2) Improved operation convenience: The manual intervention end is set on the side of the channel steel on the operation side of the horizontal sealing door panel. This design enables the operator to easily operate without climbing onto the horizontal sealing door panel. Just standing on the passage can greatly improve the operation convenience and safety.

[0031] (3) Efficient synchronous locking and unlocking: Through the precise cooperation of the first commutator and the second commutator between the transmission component and the locking transmission component, the synchronous extension or retraction of the four locking heads is realized, which not only improves the speed of locking and unlocking, but also ensures the uniform stress of the horizontal sealing door panel and extends the service life.

[0032] (4) Enhanced emergency response ability: In case of emergency, the device can quickly lock or unlock the horizontal sealing door panel, which buys precious time for personnel evacuation and material transfer and improves the emergency response ability.

[0033] (5) Reduced maintenance cost: Due to the reasonable structure design of the device, with fewer and more durable transmission parts, the complexity and cost of daily maintenance are reduced. Description of the Drawings

[0034] Figure 1 is a schematic structural view of a novel air defense door locking device of the present utility model;

[0035] Figure 2 is Figure 1 a schematic sectional view taken along line A-A in

[0036] Figure 3 is Figure 1 a schematic sectional view taken along line A-A in

[0037] In the attached drawings: control drive assembly 1, first commutator 11, main control end 111, controlled end 112, rotating drive rod 12, rotating drive end 121, manual intervention end 122, rotation limiting rod 13, locking drive assembly 2, locking drive rod 21, secondary connection end 211, locking mounting end 212, locking head 3, second commutator 4, commutator mounting seat 40, main direction end 41, secondary direction end 42, manual crank 5, sealing end cover 6, O-ring seal 7, thrust assembly 8, bushing 81, drive screw rod 82, thrust bearing 83, coupling 84, locking sleeve 9, horizontal sealing door panel 100. Specific embodiments

[0038] The technical solution of the present utility model will be further described below with reference to the attached drawings and through specific embodiments.

[0039] In the description of the present utility model, it should be understood that the orientation or positional relationship indicated by the terms "center", "longitudinal", "transverse", "length", "width", "thickness", "upper", "lower", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "axial", "radial", "circumferential", etc. is based on the orientation or positional relationship shown in the attached drawings, and is only for the convenience of describing the present utility model and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be construed as a limitation to the present utility model.

[0040] In addition, the terms "first" and "second" are only used for descriptive purposes and cannot be construed as indicating or implying relative importance or implicitly indicating the quantity of the indicated technical features. Thus, the features defined with "first" and "second" may explicitly or implicitly include one or more of such features. In the description of the present utility model, unless otherwise specified, the meaning of "a plurality" is two or more.

[0041] In the description of the present utility model, it should be noted that unless otherwise clearly specified and defined, the terms "installation", "connection", and "linkage" should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a direct connection or an indirect connection through an intermediate medium, and it can be the communication inside two components. For those of ordinary skill in the art, the specific meanings of the above terms in the present utility model can be understood according to specific circumstances.

[0042] As Figures 1-3 shown, a new type of civil air defense door locking device is installed inside the horizontal sealing door panel 100, and a locking head seat is installed around the door frame of the horizontal sealing door panel 100;

[0043] The new type of civil air defense door locking device includes a control transmission assembly 1 and a locking transmission assembly 2;

[0044] The control transmission assembly 1 includes a first commutator 11, a rotating transmission rod 12, and two rotating limit rods 13;

[0045] The first commutator 11 includes a main control end 111 and two controlled ends 112;

[0046] One end of the rotating transmission rod 12 is a rotating transmission end 121, and the rotating transmission end 121 is in transmission connection with the main control end 111 of the first commutator 11. The other end of the rotating transmission rod 12 is a manual intervention end 122, and the manual intervention end 122 passes through the horizontal sealing door panel 100;

[0047] One end of the rotating limit rod 13 is in transmission connection with the controlled end 112 of the first commutator 11, and the other end of the rotating limit rod 13 is in transmission connection with two groups of the locking transmission assemblies 2 through a second commutator 4. Locking heads 3 are installed at both ends of the two groups of the locking transmission assemblies 2, and the locking heads 3 are movably arranged to pass through the horizontal sealing door panel 100, and the locking heads 3 are arranged in cooperation with the locking head seat;

[0048] When an external force acts on the manual intervention end 122 to cause the rotating transmission rod 12 to rotate self - rotatably, the rotating limit rod 13 rotates following the self - rotation of the rotating transmission rod 12 through the first commutator 11, and the locking transmission assembly 2 rotates following the rotation of the rotating limit rod 13 through the second commutator 4. The locking heads 3 of the two groups of the locking transmission assemblies 2 located on the same second commutator 4 move closer to or away from the second commutator 4, and the moving motion realizes the change of the locking state or unlocking state between the locking head 3 and the locking head seat.

[0049] The working principle of this new type of civil air defense door locking device is mainly based on mechanical transmission and commutation control. The specific steps are as follows: When it is necessary to lock or unlock the horizontal sealing door panel 100, the operator applies a manual intervention force, such as manual rotation, to the manual intervention end 122 of the rotating transmission rod 12. Subsequently, the self-rotation of the rotating transmission rod 12 is transmitted to the main control end 111 of the first commutator 11 through its rotating transmission end 121. According to the input of the main control end 111, the first commutator 11 simultaneously controls its two controlled ends 112 and distributes the power to the two rotating limit rods 13. Then, after receiving the power from the first commutator 11, the rotating limit rods 13 start to rotate and further transmit the power to the locking transmission assembly 2 through the second commutator 4. Here, the second commutator 4 can adjust the direction or speed to meet the movement requirements of the locking transmission assembly 2. Finally, after receiving the power, the locking transmission assembly 2 drives the locking head 3 to move along a predetermined track. According to the self-rotation direction of the rotating transmission rod 12, the locking head 3 can approach or move away from the locking head seat, thereby realizing the change between the locked and unlocked states. At the same time, since the first commutator 11 controls two second commutators 4 through its two controlled ends 112, the two second commutators 4 respectively control two groups of locking transmission assemblies 2, and locking heads 3 are installed on both groups of locking transmission assemblies 2. Therefore, the four locking heads 3 at the four corners of this new type of civil air defense door locking device can extend or retract synchronously, ensuring the uniform force and stable locking of the horizontal sealing door panel 100.

[0050] In summary, this new type of civil air defense door locking device has the following beneficial effects:

[0051] (1) Compact structure and enhanced protection: The whole device is embedded inside the civil air defense door panel, which not only reduces the occupation of external space but also enhances the protection performance of the device through the protection of the horizontal sealing door panel 100, making it more durable and safe.

[0052] (2) Improved operation convenience: The manual intervention end 122 is set on the side of the channel steel on the operation side of the horizontal sealing door panel 100. This design enables the operator to easily operate without climbing onto the horizontal sealing door panel 100. The operator only needs to stand in the passage, greatly improving the operation convenience and safety.

[0053] (3) Efficient synchronous locking and unlocking: Through the precise cooperation of the first commutator 11 and the second commutator 4 between the control transmission assembly 1 and the locking transmission assembly 2, the synchronous extension or retraction of the four locking heads 3 is realized, which not only improves the speed of locking and unlocking but also ensures the uniform force on the horizontal sealing door panel 100 and extends the service life.

[0054] (4) Enhanced emergency response ability: In case of an emergency, the device can quickly lock or unlock the horizontal sealing door panel 100, winning precious time for personnel evacuation and material transfer and improving the emergency response ability.

[0055] (5) Reduce maintenance costs: Due to the reasonable design of the device structure, there are few transmission components and they are durable, thus reducing the complexity and cost of daily maintenance.

[0056] Furthermore, a manual crank 5 is detachably installed outside the manual intervention end 122.

[0057] Firstly, the manual crank 5 is convenient for the operator to hold and operate. Secondly, as a detachable tool, the manual crank 5 is sleeved on the manual intervention end 122 of the rotary transmission rod 12 when operating the anti-personnel door panel locking device. After the operation is completed, it can be easily disassembled and stored in a fixed tool box. This design not only facilitates the storage and management of tools, but also avoids the possibility of tool loss or damage, further enhancing the reliability of the device.

[0058] Furthermore, a sealing end cover 6 and an O-ring seal 7 are installed between the outside of the manual intervention end 122 and the manual crank 5.

[0059] At the side channel steel of the horizontal plugging door panel 100 where the rotary transmission rod 12 passes through, a sealing end cover 6 is specially provided, and an O-ring seal 7 is equipped on the sealing end cover 6. This design not only effectively prevents dust and moisture from entering the interior along the rotary transmission rod 12 through the side channel steel of the horizontal plugging door panel 100, ensuring the normal operation of the device, but also enhances the overall sealing performance of the horizontal plugging door panel 100.

[0060] Furthermore, the locking transmission assembly 2 includes a locking transmission rod 21;

[0061] The second commutator 4 is installed in the horizontal plugging door panel 100 through a commutator mounting seat 40. The second commutator 4 includes a main direction end 41 and two sub-direction ends 42;

[0062] One end of the two locking transmission rods 21 is a sub-direction connection end 211, and the sub-direction connection end 211 is in transmission connection with the sub-direction end 42 of the second commutator 4. One end of the two locking transmission rods 21 is a locking installation end 212, and the locking head 3 is installed at the locking installation end 212;

[0063] The main direction end 41 of the second commutator 4 is in transmission connection with the other end of the rotation limit rod 13.

[0064] Specifically, the working principle of the locking transmission assembly 2 is also based on mechanical transmission and commutation control. The specific steps are as follows:

[0065] When the rotation limit rod 13 rotates under the drive of the control transmission assembly 1, the other end thereof transmits power to the main end 41 of the second commutator 4 through transmission connection. After receiving the power at the main end 41, the second commutator 4 distributes the power to two slave ends 42 for controlling the movement of the two locking transmission rods 21 through the internal commutation mechanism. The slave connection ends 211 of the two locking transmission rods 21 are in transmission connection with the slave ends 42 of the second commutator 4. Therefore, when the slave ends 42 receive power, the locking transmission rods 21 start to move. The other end of the locking transmission rod 21 is a locking mounting end 212, on which a locking head 3 is installed. Along with the movement of the locking transmission rod 21, the locking head 3 moves along a predetermined track. According to the rotation direction of the rotation limit rod 13, the locking head 3 can approach or move away from the locking head seat, realizing the change of the locking or unlocking state. Since the two locking transmission rods 21 are both controlled by the same second commutator 4, they can maintain synchronous movement, ensuring that the locking heads 3 on the two locking transmission rods 21 can extend or retract simultaneously, thereby realizing the uniform locking or unlocking of the four corners of the horizontal sealing door panel 100, and improving the efficiency and stability of locking and unlocking.

[0066] Further explanation, a thrust assembly 8 is installed between the slave connection end 211 of the locking transmission rod 21 and the slave end 42 of the second commutator 4.

[0067] In this new type of civil air defense door locking device, the thrust assembly 8 is introduced to optimize the connection and transmission efficiency between the locking transmission rod 21 and the second commutator 4.

[0068] Further explanation, the thrust assembly 8 includes a bushing 81 and a transmission lead screw 82;

[0069] A coupling 84 is installed between the slave end 42 of the second commutator 4 and the bushing 81, and an internal thread is provided inside the bushing 81;

[0070] The transmission lead screw 82 is rotatably installed in the bushing 81, and one end of the transmission lead screw 82 with an external thread is threadedly connected to the internal thread of the bushing 81, and the other end of the transmission lead screw 82 is in transmission connection with the slave connection end 211 of the locking transmission rod 21.

[0071] The specific working principle of the thrust assembly 8 is as follows:

[0072] When the second commutator 4 receives the power transmitted by the rotation limiting rod 13, it starts to rotate from the follower end 42. The coupling 84 installed between the follower end 42 of the second commutator 4 and the bushing 81 ensures the synchronous rotation of the two, that is, the bushing 81 will rotate with the rotation of the follower end 42 of the second commutator 4. Further, the inner thread is provided inside the bushing 81, and one end of the transmission lead screw 82 has an external thread that matches it. When the bushing 81 rotates, through the interaction of the threads, the transmission lead screw 82 will generate a linear motion inside the bushing 81, that is, move along the thread direction. At the same time, the other end of the transmission lead screw 82 is drivingly connected to the follower connection end 211 of the locking transmission rod 21. Therefore, when the transmission lead screw 82 moves inside the bushing 81, it will drive the locking transmission rod 21 to perform a corresponding linear motion.

[0073] For further illustration, a thrust bearing 83 is rotatably installed outside the bushing 81. The thrust assembly 8 also adds a thrust bearing 83, which is installed outside the bushing 81 and is mainly responsible for supporting the bushing 81 and the transmission lead screw 82, and reducing the friction and resistance during rotation to ensure smooth and efficient power transmission.

[0074] For further illustration, it further includes a locking sleeve 9. The locking sleeve 9 is installed in the horizontal sealing door panel 100, and a plugging space is provided inside the locking sleeve 9 for the locking head 3 to be movably plugged in.

[0075] Specifically, as a part of the new civil air defense door locking device, the locking sleeve 9 is installed on the horizontal sealing door panel 100. The plugging space provided inside it is designed specifically for the locking head 3, allowing the locking head 3 to be movably plugged in during the locking or unlocking process. When the locking transmission assembly 2 drives the locking head 3 to move, the locking head 3 will enter or exit the plugging space of the locking sleeve 9, so as to form a locked or unlocked state with the locking head seat.

[0076] On the one hand, the locking sleeve 9 provides a stable plugging environment for the locking head 3, reducing the shaking and deviation of the locking head 3 during movement and improving the stability and reliability of locking. On the other hand, the design of the locking sleeve 9 increases the number of protective layers of the door panel. Even if the locking head 3 is subjected to an external impact, the buffer effect of the locking sleeve 9 can reduce the direct impact on the door panel structure and improve the overall protection performance.

[0077] For further illustration, the first commutator 11 is a worm reducer.

[0078] It is known that the worm gear reducer has a large transmission ratio and self-locking property, and can output a large torque to meet the demand for large torque of the civil defense door locking device. In addition, the transmission process of the worm gear reducer is smooth, without impact and vibration, which is conducive to protecting the internal parts of the locking device and extending the service life. At the same time, the design of the worm gear reducer makes the output shaft have a high positioning accuracy, ensuring the accurate position of the locking head 3 during the locking or unlocking process.

[0079] To further explain, the second commutator 4 is a commutation reducer.

[0080] It is known that the reversing reducer can realize power transmission and reversing between the input shaft and multiple output shafts, meeting the requirements of synchronous movement of multiple locking transmission rods 21 in the locking transmission assembly 2. Moreover, the reversing reducer has a compact structure and occupies a small space, which is conducive to realizing a complex transmission layout in the limited space inside the civil air defense door panel. Most importantly, the reversing reducer improves the transmission efficiency and reduces energy loss by optimizing the transmission structure and material selection.

[0081] The technical principle of the present invention is described above in combination with specific embodiments. These descriptions are only for explaining the principle of the present invention and cannot be interpreted as limiting the protection scope of the present invention in any way. Based on the explanations here, technicians in this field can think of other specific implementations of the present invention without creative work, and these equivalent variations or substitutions are all included in the scope defined by the claims of this application.

Claims

1. A new type of civil air defense door locking device, characterized in that, It is installed inside the horizontal sealing door panel (100), and a latch head seat is installed around the door frame of the horizontal sealing door panel (100). The novel civil air defense door locking device includes a control transmission assembly (1) and a locking transmission assembly (2). The control transmission assembly (1) includes a first commutator (11), a rotating transmission rod (12), and two rotating limiting rods (13). The first commutator (11) includes a main control end (111) and two controlled ends (112). One end of the rotating transmission rod (12) is a rotating transmission end (121), and the rotating transmission end (121) is in transmission connection with the main control end (111) of the first commutator (11). The other end of the rotating transmission rod (12) is a manual intervention end (122), and the manual intervention end (122) penetrates through the horizontal sealing door panel (100). One end of the rotating limiting rod (13) is in transmission connection with the controlled end (112) of the first commutator (11), and the other end of the rotating limiting rod (13) is in transmission connection with two groups of the locking transmission assemblies (2) through a second commutator (4). Locking heads (3) are installed at both ends of the two groups of the locking transmission assemblies (2), and the locking heads (3) are movably arranged to penetrate through the horizontal sealing door panel (100), and the locking heads (3) are arranged in cooperation with the latch head seat. When an external force acts on the manual intervention end (122) to make the rotating transmission rod (12) rotate self - rotatably, the rotating limiting rod (13) rotates following the self - rotation of the rotating transmission rod (12) through the first commutator (11), the locking transmission assembly (2) rotates following the rotation of the rotating limiting rod (13) through the second commutator (4), and the locking heads (3) of the two groups of the locking transmission assemblies (2) located on the same second commutator (4) move closer to or away from the second commutator (4), and the moving motion realizes the change of the locking state or unlocking state between the locking head (3) and the latch head seat.

2. The novel civil air defense door locking device according to claim 1, wherein A manual crank (5) is detachably installed outside the manual intervention end (122).

3. The novel civil air defense door locking device according to claim 2, characterized in that, A sealing end cover (6) and an O - ring seal (7) are installed between the outside of the manual intervention end (122) and the manual crank (5).

4. A novel anti-air-raid door locking device according to claim 1, characterized in that, The locking transmission assembly (2) includes a locking transmission rod (21). The second commutator (4) is installed inside the horizontal sealing door panel (100) through a commutator mounting seat (40). The second commutator (4) includes a main direction end (41) and two sub - direction ends (42). One end of the two locking transmission rods (21) is a sub - direction connection end (211), and the sub - direction connection end (211) is in transmission connection with the sub - direction end (42) of the second commutator (4). One end of the two locking transmission rods (21) is a locking installation end (212), and the locking head (3) is installed at the locking installation end (212). The main direction end (41) of the second commutator (4) is in transmission connection with the other end of the rotating limiting rod (13).

5. A novel anti-air-raid door locking device according to claim 4, characterized in that, A thrust assembly (8) is installed between the longitudinal connection end (211) of the locking transmission rod (21) and the longitudinal end (42) of the second commutator (4).

6. The novel civil air defense door locking device according to claim 5, characterized in that, The thrust assembly (8) includes a bushing (81) and a transmission lead screw (82); A coupling (84) is installed between the longitudinal end (42) of the second commutator (4) and the bushing (81), and an internal thread is provided inside the bushing (81); The transmission lead screw (82) is rotatably installed in the bushing (81), and one end of the transmission lead screw (82) having an external thread is threadedly connected to the internal thread of the bushing (81), and the other end of the transmission lead screw (82) is in transmission connection with the longitudinal connection end (211) of the locking transmission rod (21).

7. A novel anti-air-raid door locking device according to claim 6, characterized in that, A thrust bearing (83) is rotatably installed outside the bushing (81).

8. A novel anti-air-raid door locking device according to claim 1, characterized in that, It further includes a locking sleeve (9), the locking sleeve (9) is installed in the horizontal plugging door panel (100), and a plugging space is provided in the locking sleeve (9) for the locking head (3) to be movably plugged in.

9. A novel anti-air-raid door locking device according to claim 1, characterized in that, The first commutator (11) is a worm gear reducer.

10. The novel civil air defense door locking device according to claim 1, characterized in that, The second commutator (4) is a commutation reducer.

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