Hydraulic civil air defense door with buffer mechanism
By combining hydraulic drive and buffer components, the problems of insufficient automation and protection capabilities of air defense doors have been solved, achieving automatic opening and closing, precise control, and enhanced airtightness and impact resistance.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- SHANGHAI PENGCHENG VENTILATION EQUIP CO LTD
- Filing Date
- 2025-09-05
- Publication Date
- 2026-08-04
AI Technical Summary
Existing air defense doors rely on manual opening and closing, making it difficult to precisely control the opening and closing speed, and they lack a buffer mechanism, resulting in limited protective capabilities.
The door uses a hydraulic drive combined with a buffer assembly to achieve automatic opening and closing. It is equipped with a locking assembly to ensure airtightness, and the buffer assembly absorbs impact force through a spring structure to enhance impact resistance.
It achieves automated opening and closing of the door, precisely controls the opening and closing speed, improves ease of use and protective performance, extends equipment life, and enhances airtightness and impact resistance.
Smart Images
Figure CN224591986U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of hydraulic air defense door technology, and in particular to a hydraulic air defense door with a buffer mechanism. Background Technology
[0002] Civil defense doors are specialized protective facilities at the entrances and exits of civil defense projects. They belong to civil defense equipment and are mainly used to prevent and mitigate harm from air raids, disasters, and other hazards. Their core functions are protection and airtightness, and some types also possess combined capabilities such as fire resistance and electromagnetic pulse protection. They are classified into two types based on their material: concrete and steel.
[0003] However, existing air-raid shelter doors have some shortcomings in practical use: traditional air-raid shelter doors mostly rely on manual opening and closing, which is not only physically demanding but also difficult to control precisely, potentially affecting passage efficiency or response speed in emergencies; furthermore, most traditional air-raid shelter doors lack a buffer mechanism, meaning that in the event of a violent collision, the door body often cannot withstand the strong impact force, thus limiting the protective capabilities of existing air-raid shelter doors. Therefore, there is an urgent need for a hydraulic air-raid shelter door with a buffer mechanism to solve these problems. Utility Model Content
[0004] The purpose of this invention is to address the shortcomings of existing technologies by proposing a hydraulic air-raid shelter door with a buffer mechanism. Its advantages lie in the automatic opening and closing of the door via hydraulic drive with controllable opening and closing speed. Combined with a buffer component, it enhances impact resistance, making the air-raid shelter door convenient to use and providing excellent protective performance.
[0005] To achieve the above objectives, the present invention adopts the following technical solution:
[0006] A hydraulic air defense door with a buffer mechanism includes a door frame, an installation cavity inside the door frame, a fixed column fixedly connected inside the installation cavity, a sleeve rotatably connected to the outer circumference of the fixed column, a fixed plate fixedly connected to the outer circumference of the sleeve, a door body fixedly connected to one side of the fixed plate, a through groove provided on one side of the door frame to facilitate the fixed plate to rotate with the door body, and a buffer assembly provided on one side of the door body.
[0007] The door is equipped with a locking mechanism inside.
[0008] Through the above technical solutions, the buffer component can play a buffering role when the door is impacted, reducing damage to the door.
[0009] Preferably, the locking assembly includes a cavity formed inside the door body, a handle rotatably connected to the outside of the door body, a gear ring fixedly connected to the output end of the handle located inside the cavity, a toothed rod meshing with the outer circumferential wall of the gear ring, a moving groove for facilitating the displacement of the toothed rod being formed inside the door body, and a slot for locking with the toothed rod being formed on one side of the other door body.
[0010] The above technical solutions enable locking between the two doors, which is easy to operate and has a reliable locking effect, effectively enhancing the airtightness and security of the air defense door after it is closed.
[0011] Preferably, a rectangular groove is provided inside the door body, and a horizontal block is fixedly connected to one end of the toothed rod, with the horizontal block slidably connected to the rectangular groove.
[0012] The above technical solutions prevent the rack from shifting or wobbling during movement, ensuring the smoothness and accuracy of the rack's movement, and thus ensuring the normal operation of the locking assembly.
[0013] Preferably, the door body has a sliding groove inside, and a slider is slidably connected inside the sliding groove. The slider is fixedly connected to the toothed rod.
[0014] Through the above technical solutions, the cooperation between the slide and the slider further restricts the movement direction of the rack. Together with the cooperation of the cross block and the rectangular groove, it greatly improves the stability of the rack displacement process, prevents the rack from jamming, and ensures the smooth operation of the locking assembly.
[0015] Preferably, the buffer assembly includes a mounting frame fixedly connected to the outer wall of one side of the door body, a square groove is provided on one side of the door body, and a first spring distributed at equal intervals is fixedly connected inside the square groove, and a buffer plate is fixedly connected to the other end of the first spring.
[0016] Through the above technical solution: when the door is impacted by external force or collides with other objects when it is closed, the buffer plate will be stressed first, which will then compress the first spring in the square groove. The first spring will undergo elastic deformation, which can absorb part of the impact force and play a buffering role, reducing the direct impact force on the door, thereby protecting the door and extending its service life.
[0017] Preferably, the four inner walls of the mounting frame and the square groove are provided with limiting grooves, and a sliding plate is slidably connected inside the limiting groove. The sliding plate is fixedly connected to the buffer plate. A second spring is fixedly connected inside the square groove. The other end of the second spring is fixedly connected to the buffer plate. The second spring and the first spring are staggered in the square groove.
[0018] Through the above technical solution: during the compression of the first spring, the buffer plate will compress the second spring after the first spring is compressed to a certain extent. Since the second spring and the first spring are staggered, the two work together to absorb more impact force, further enhancing the buffering effect and improving the impact resistance of the door.
[0019] Preferably, a rotating seat is fixedly connected to one side of the outer wall of both the door frame and the door body, and a hydraulic rod is provided on one side of the door body. The output end of the hydraulic rod is rotatably connected to the rotating seat fixedly connected to the door frame, and the other end of the hydraulic rod is rotatably connected to the rotating seat fixedly connected to the door body.
[0020] The above technical solutions enable automatic opening and closing of the gate, eliminating the need for manual operation, saving physical effort. Furthermore, the hydraulic drive can precisely control the opening and closing speed of the gate, allowing for rapid response in emergencies and improving passage efficiency or security response speed.
[0021] The beneficial effects of this utility model are as follows:
[0022] 1. A hydraulic air defense door with a buffer mechanism, which ensures smooth rotation of the door body around the door frame by rotating the fixed column and sleeve inside the door frame and moving the fixed plate along the through groove. At the same time, the door frame and the rotating seat on the door body are connected to the hydraulic rod, and the door body is automatically opened and closed by hydraulic drive. This not only saves manpower, but also accurately controls the opening and closing speed, greatly improving the convenience of use. The overall structural design ensures the stability of the door body when it rotates.
[0023] 2. A hydraulic air-raid shelter door with a buffer mechanism, wherein when the door is closed or subjected to an external impact, the buffer plate compresses the first spring under force, and the elastic deformation of the first spring absorbs the impact force. At the same time, the buffer plate drives the sliding plate to slide along the limiting groove, ensuring a stable and orderly buffering process, effectively reducing collision damage between the door and the door frame, and extending the service life of the equipment. If the impact force is too strong, the second spring will play a further role. Since the second spring and the first spring are staggered in the square groove, and the second spring is shorter than the first spring, after the first spring is compressed to a certain extent, the second spring will be compressed accordingly. With the help of its elastic deformation, the second spring will share and absorb the impact force, thereby enhancing the buffering effect.
[0024] 3. A hydraulic air-raid shelter door with a buffer mechanism, wherein the locking assembly inside the door body drives the gear ring to rotate by turning the handle. The gear ring meshes with the rack, causing the rack to move along the moving groove. The horizontal block at one end of the rack slides along the rectangular groove, and the slider slides along the sliding groove, ensuring the smooth movement of the rack. Finally, the rack is inserted into the slot of another door body to achieve locking. This locking method has a compact structure and a firm locking, effectively improving the protective and airtight performance of the air-raid shelter door and better meeting the usage needs in scenarios such as air raids and disasters. Attached Figure Description
[0025] Figure 1 A schematic diagram of the overall front structure of a hydraulic air defense door with a buffer mechanism proposed in this utility model;
[0026] Figure 2 A schematic diagram of the overall rear structure of a hydraulic air-raid shelter door with a buffer mechanism proposed in this utility model;
[0027] Figure 3 This is a schematic cross-sectional view of the overall structure of a hydraulic air defense door with a buffer mechanism proposed in this utility model.
[0028] Figure 4 This is a schematic diagram of the disassembled structure of the buffer plate of a hydraulic air defense door with a buffer mechanism proposed in this utility model.
[0029] In the diagram: 1. Door frame; 2. Door body; 3. Buffer plate; 4. First spring; 5. Mounting frame; 6. Rotating seat; 7. Hydraulic rod; 8. Through groove; 9. Turning handle; 10. Fixing post; 11. Sleeve; 12. Fixing plate; 13. Rectangular groove; 14. Slot; 15. Toothed rod; 16. Slide groove; 17. Cavity; 18. Gear ring; 20. Slider; 21. Cross block; 22. Moving groove; 23. Limiting groove; 24. Second spring; 25. Slide plate. Detailed Implementation
[0030] The technical solution of this patent will be further described in detail below with reference to specific embodiments.
[0031] The embodiments of this patent are described in detail below. Examples of these embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain this patent, and should not be construed as limiting this patent.
[0032] In the description of this patent, it should be understood that the terms “center,” “upper,” “lower,” “front,” “back,” “left,” “right,” “vertical,” “horizontal,” “top,” “bottom,” “inner,” and “outer,” etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are used only for the convenience of describing this patent and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this patent.
[0033] In the description of this patent, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," "linking," and "setting" should be interpreted broadly. For example, they can refer to a fixed connection or setting, a detachable connection or setting, or an integral connection or setting. Those skilled in the art can understand the specific meaning of the above terms in this patent according to the specific circumstances.
[0034] Reference Figures 1-4 A hydraulic air defense door with a buffer mechanism includes a door frame 1. The door frame 1 has an installation cavity inside. A fixing column 10 is fixedly connected inside the installation cavity. A sleeve 11 is rotatably connected to the outer circumference of the fixing column 10. A fixing plate 12 is fixedly connected to the outer circumference of the sleeve 11. A door body 2 is fixedly connected to one side of the fixing plate 12. A through groove 8 is provided on one side of the door frame 1 to facilitate the rotation of the fixing plate 12 with the door body 2. A buffer assembly is provided on one side of the door body 2.
[0035] The door body 2 is equipped with a locking assembly. With the help of the rotational cooperation between the fixed post 10 and the sleeve 11 inside the door frame 1, the door body 2 can rotate flexibly around the door frame 1. The movement of the fixed plate 12 along the through groove 8 provides guidance and space for the rotation of the door body 2, ensuring the smoothness of the rotation process. The buffer assembly can play a buffering role when the door body 2 is impacted, reducing the damage to the door body 2. At the same time, the locking assembly can achieve a stable lock after the door body 2 is closed, improving the protective performance of the blast door.
[0036] Specifically, the locking assembly includes a cavity 17 inside the door body 2, a handle 9 rotatably connected to the outside of the door body 2, a gear ring 18 fixedly connected to the output end of the handle 9 inside the cavity 17, a toothed rod 15 meshing with the outer circumference of the gear ring 18, a moving groove 22 for facilitating the displacement of the toothed rod 15 inside the door body 2, and a slot 14 for locking with the toothed rod 15 on one side of the other door body 2. When the handle 9 is turned, it drives the gear ring 18 inside the cavity 17 to rotate, and the gear ring 18 meshes with the toothed rod 15, thereby driving the toothed rod 15 to move along the moving groove 22. When the toothed rod 15 is inserted into the slot 14 on the other door body 2, the two door bodies 2 can be locked together. The operation is simple and the locking effect is reliable, effectively enhancing the airtightness and safety of the air defense door after it is closed.
[0037] Specifically, a rectangular groove 13 is provided inside the door body 2. A horizontal block 21 is fixedly connected to one end of the toothed rod 15. The horizontal block 21 is slidably connected to the rectangular groove 13. During the displacement of the toothed rod 15 along the moving groove 22, the horizontal block 21 at one end of the toothed rod 15 will slide synchronously along the rectangular groove 13. The rectangular groove 13 plays a limiting and guiding role for the horizontal block 21, preventing the toothed rod 15 from deviating or shaking during the movement, ensuring the smoothness and accuracy of the movement of the toothed rod 15, and thus ensuring the normal operation of the locking assembly.
[0038] Specifically, the door body 2 has a sliding groove 16 inside, and a slider 20 is slidably connected inside the sliding groove 16. The slider 20 is fixedly connected to the rack 15. When the rack 15 moves, the slider 20 fixedly connected to it will slide along the sliding groove 16. The cooperation between the sliding groove 16 and the slider 20 further restricts the movement direction of the rack 15. Together with the cooperation of the horizontal block 21 and the rectangular groove 13, it greatly improves the stability of the rack 15 displacement process, prevents the rack 15 from jamming, and ensures the smooth operation of the locking assembly.
[0039] Specifically, the buffer assembly includes a mounting frame 5 fixedly connected to the outer wall of one side of the door body 2. A square groove is provided on one side of the door body 2, and first springs 4 are fixedly connected at equal intervals inside the square groove. A buffer plate 3 is fixedly connected to the other end of the first springs 4. When the door body 2 is impacted by external force or collides with other objects when it is closed, the buffer plate 3 will be stressed first, which will then compress the first springs 4 in the square groove. The first springs 4 undergo elastic deformation, which can absorb part of the impact force and play a buffering role, reducing the direct impact force on the door body 2, thereby protecting the door body 2 and extending its service life. The mounting frame 5 plays a certain protective and support role for the buffer plate 3 and other components.
[0040] Specifically, the four inner walls of the mounting frame 5 and the square groove are provided with limiting grooves 23. A sliding plate 25 is slidably connected inside the limiting groove 23. The sliding plate 25 is fixedly connected to the buffer plate 3. A second spring 24 is fixedly connected inside the square groove. The other end of the second spring 24 is fixedly connected to the buffer plate 3. The second spring 24 and the first spring 4 are staggered in the square groove. When the buffer plate 3 is moved by force, it will drive the sliding plate 25 to slide along the limiting groove 23. The cooperation between the limiting groove 23 and the sliding plate 25 ensures the smooth movement of the buffer plate 3 and prevents the buffer plate 3 from tilting during the buffering process. At the same time, when the buffer plate 3 compresses the first spring 4, when the first spring 4 is compressed to a certain extent, it will compress the second spring 24. Since the second spring 24 and the first spring 4 are staggered, the two work together to absorb more impact force, further enhance the buffering effect, and improve the impact resistance of the door 2.
[0041] Specifically, a rotating seat 6 is fixedly connected to one outer wall of both the door frame 1 and the door body 2. A hydraulic rod 7 is provided on one side of the door body 2. The output end of the hydraulic rod 7 is rotatably connected to the rotating seat 6 fixedly connected to the door frame 1, and the other end of the hydraulic rod 7 is rotatably connected to the rotating seat 6 fixedly connected to the door body 2. Both ends of the hydraulic rod 7 are rotatably connected to the rotating seats 6 on the door frame 1 and the door body 2, respectively. When the hydraulic rod 7 extends or retracts, it can drive the door body 2 to rotate around the fixed column 10, realizing the automatic opening and closing of the door body 2 without manual operation, saving physical strength. Moreover, the hydraulic drive can precisely control the opening and closing speed of the door body 2, and can respond quickly in emergencies, improving passage efficiency or protection response speed. The setting of the rotating seat 6 ensures that the angle of the hydraulic rod 7 can be flexibly adjusted during the process of driving the door body 2 to rotate, ensuring the smoothness of the driving process.
[0042] Working principle: During use, the fixed column 10 inside the door frame 1 rotates and engages with the sleeve 11, enabling the door body 2 to rotate flexibly around the door frame 1. When the door body 2 rotates, the fixed plate 12 moves along the through groove 8 to ensure smooth rotation. At the same time, the two ends of the hydraulic rod 7 are connected to the rotating seat 6 on the door frame 1 and the door body 2 respectively. The door body 2 is automatically opened and closed by hydraulic drive, which saves manpower and can accurately control the opening and closing speed, improving the convenience of use.
[0043] In the buffer assembly on one side of the door 2, when the door 2 is closed or subjected to external impact, the buffer plate 3 compresses the first spring 4 after being subjected to force. The elastic deformation of the first spring 4 absorbs the impact force. At the same time, the buffer plate 3 drives the slide plate 25 to slide along the limiting groove 23, ensuring that the buffering process is stable and orderly, effectively reducing the collision damage between the door 2 and the door frame 1, and extending the service life of the equipment. If the impact force is too strong, the second spring 24 will play a further role. Since the second spring 24 and the first spring 4 are staggered in the square groove, and the second spring 24 is shorter than the first spring 4, after the first spring 4 is compressed to a certain extent, the second spring 24 will be compressed accordingly. With the help of its elastic deformation, it will share and absorb the impact force, and enhance the buffering effect.
[0044] The locking assembly inside the door 2 rotates the gear ring 18 by turning the handle 9. The gear ring 18 meshes with the rack 15, causing the rack 15 to move along the moving groove 22. The horizontal block 21 at one end of the rack 15 slides along the rectangular groove 13, and the slider 20 slides along the sliding groove 16, ensuring that the rack 15 moves smoothly. Finally, the rack 15 is inserted into the slot 14 of another door 2 to achieve locking. This locking method has a compact structure and a firm locking, which improves the protective and airtight performance of the air defense door and better meets people's needs for using air defense doors.
[0045] The above description is only a preferred embodiment of the present utility model, but the protection scope of the present utility model is not limited thereto. Any equivalent substitutions or changes made by those skilled in the art within the technical scope disclosed in the present utility model, based on the technical solution and the inventive concept of the present utility model, should be included within the protection scope of the present utility model.
Claims
1. A hydraulic air-raid shelter door with a buffer mechanism, comprising a door frame (1), characterized in that, The door frame (1) has an installation cavity inside, and a fixing column (10) is fixedly connected inside the installation cavity. A sleeve (11) is rotatably connected to the outer circumference of the fixing column (10). A fixing plate (12) is fixedly connected to the outer circumference of the sleeve (11). A door body (2) is fixedly connected to one side of the fixing plate (12). A through groove (8) is provided on one side of the door frame (1) to facilitate the rotation of the fixing plate (12) with the door body (2). A buffer assembly is provided on one side of the door body (2). The door (2) is equipped with a locking component inside.
2. The hydraulic air-raid shelter door with a buffer mechanism according to claim 1, characterized in that, The locking assembly includes a cavity (17) inside the door body (2), a handle (9) is rotatably connected to the outside of the door body (2), a gear ring (18) is fixedly connected to the output end of the handle (9) inside the cavity (17), a toothed rod (15) is meshed on the outer circumference of the gear ring (18), a moving groove (22) is provided inside the door body (2) to facilitate the displacement of the toothed rod (15), and a slot (14) is provided on one side of the other door body (2) to engage and lock with the toothed rod (15).
3. A hydraulic air-raid shelter door with a buffer mechanism according to claim 2, characterized in that, The door body (2) has a rectangular groove (13) inside. One end of the toothed rod (15) is fixedly connected to a horizontal block (21), and the horizontal block (21) is slidably connected to the rectangular groove (13).
4. A hydraulic air-raid shelter door with a buffer mechanism according to claim 3, characterized in that, The door body (2) has a sliding groove (16) inside, and a slider (20) is slidably connected inside the sliding groove (16). The slider (20) is fixedly connected to the toothed rod (15).
5. A hydraulic air-raid shelter door with a buffer mechanism according to claim 4, characterized in that, The buffer assembly includes a mounting frame (5) fixedly connected to the outer wall of one side of the door body (2). A square groove is provided on one side of the door body (2). A first spring (4) is fixedly connected inside the square groove at equal intervals. A buffer plate (3) is fixedly connected to the other end of the first spring (4).
6. A hydraulic air-raid shelter door with a buffer mechanism according to claim 5, characterized in that, Limiting grooves (23) are provided on the inner walls of the four sides of the mounting frame (5) and the square groove. A sliding plate (25) is slidably connected inside the limiting groove (23). The sliding plate (25) is fixedly connected to the buffer plate (3). A second spring (24) is fixedly connected inside the square groove. The other end of the second spring (24) is fixedly connected to the buffer plate (3). The second spring (24) and the first spring (4) are staggered in the square groove.
7. A hydraulic air-raid shelter door with a buffer mechanism according to claim 6, characterized in that, A rotating seat (6) is fixedly connected to one side of the outer wall of both the door frame (1) and the door body (2). A hydraulic rod (7) is provided on one side of the door body (2). The output end of the hydraulic rod (7) is rotatably connected to the rotating seat (6) fixedly connected to the door frame (1), and the other end of the hydraulic rod (7) is rotatably connected to the rotating seat (6) fixedly connected to the door body (2).