Civil air defense engineering protection door with buffer damping structure
By designing components such as shells, protective plates, and springs on the protective doors of civil defense projects, impact energy is absorbed, solving the problem of existing protective doors being easily damaged in wartime, achieving an effective buffering and shock absorption effect, and protecting the door and wall.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- SUZHOU GANGDUN CIVIL AIR DEFENSE ENG CO LTD
- Filing Date
- 2025-05-30
- Publication Date
- 2026-06-23
AI Technical Summary
Existing civil defense engineering protective doors lack buffer and shock absorption structures. During wartime, the shock wave generated by an explosion will directly act on the door panel, which may cause damage to the door or be transmitted to the wall, causing further damage.
The door panel is designed with a shell, protective plate, springs and auxiliary components, including springs, dampers and flexible sleeves. The combined action of these components absorbs impact energy and achieves a buffering and shock absorption effect.
This reduces the probability of direct damage to the door, prevents further damage to the wall, and improves the earthquake resistance of the protective door.
Smart Images
Figure CN224396343U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of protective door technology, specifically to a civil defense engineering protective door with a buffer and shock absorption structure. Background Technology
[0002] Civil defense engineering is short for civil air defense engineering, also known as civil defense works. It refers to underground protective buildings constructed separately to ensure the shelter of personnel and materials, civil air defense command, and medical rescue during wartime, as well as basements that can be used for air defense during wartime when combined with above-ground buildings. Protective doors are an essential facility in civil defense engineering.
[0003] Existing civil defense protective doors have been found to lack a buffer and shock absorption structure during use. In wartime, the shock wave generated by an explosion will directly act on the door panel, which may directly destroy the door or transmit the shock wave to the wall through the door, causing further damage to the wall. Therefore, improvements are needed.
[0004] Therefore, it is necessary to invent a protective door for civil defense projects with a buffer and shock absorption structure. Summary of the Invention
[0005] Therefore, this utility model provides a civil defense engineering protective door with a buffer and shock absorption structure to solve the problems in the background art.
[0006] To achieve the above objectives, this utility model provides the following technical solution: a civil defense engineering protective door with a buffer and shock absorption structure, comprising a door panel and a door frame, wherein the door panel and the door frame are connected by hinges, characterized in that a housing is fixedly connected to the front side of the door panel, a protective plate is embedded in the housing, three springs are fixedly connected to the rear side of the protective plate, the rear ends of the three springs are all fixedly connected to the inner wall of the rear side of the housing, and auxiliary components are provided at the top and bottom of the three springs;
[0007] Multiple blocks are fixedly connected to the front side of the housing, and multiple grooves are provided on the protective plate. The multiple blocks are slidably disposed in the multiple grooves and the blocks are in contact with the rear side of the grooves.
[0008] Dampers are fixedly connected to the four corners of the rear side of the protective plate, and the rear ends of the four dampers are fixedly connected to the inner wall of the rear side of the shell.
[0009] Preferably, the auxiliary component includes a cavity one, which is opened on the rear side of the protective plate. A movable plate is fixedly connected in the cavity one. A box is fixedly connected to the inner wall of the rear side of the housing. A plurality of springs two are fixedly connected between the box and the movable plate.
[0010] Preferably, a flexible sleeve is fixedly connected between the movable plate and the box body, and multiple air pipes are fixedly embedded in the top and bottom of the box body.
[0011] Preferably, the auxiliary component further includes a first connecting rod, which is fixedly connected inside the cavity. A shell is fixedly connected to the inner rear wall of the housing. A sliding plate is provided inside the shell. Two protrusions are fixedly connected to the bottom of the sliding plate. A second connecting rod is fixedly connected between the two protrusions.
[0012] Preferably, a push plate is sleeved on the outside of the first and second connecting rods, and the push plate is connected to the first and second connecting rods via bearings. A plurality of springs are fixedly connected to the top of the slide plate, and the top ends of the plurality of springs are fixedly connected to the inner wall of the top of the outer shell.
[0013] Preferably, the protective plate is in sliding contact with the housing.
[0014] Preferably, the flexible sleeve is made of rubber material.
[0015] Preferably, the slide plate makes slidable contact with the outer shell.
[0016] The beneficial effects of this utility model are:
[0017] This utility model incorporates a shell, protective plate, spring, and auxiliary components on the door panel, giving the protective door a buffering and shock-absorbing function. In wartime, the impact force from an explosion acts on the protective plate, and the spring and auxiliary components work together to buffer and absorb the energy of the impact, thus reducing the probability of direct damage to the door and preventing further damage to the wall. Attached Figure Description
[0018] To more clearly illustrate the embodiments of this utility model or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings in the following description are merely exemplary, and those skilled in the art can derive other embodiments based on the provided drawings without creative effort.
[0019] The structures, proportions, sizes, etc. illustrated in this specification are only for the purpose of assisting those skilled in the art in understanding and reading the content disclosed herein, and are not intended to limit the implementation conditions of this utility model. Therefore, they have no substantial technical significance. Any modifications to the structure, changes in the proportions, or adjustments to the size, without affecting the effects and objectives that this utility model can produce, should still fall within the scope of the technical content disclosed in this utility model.
[0020] Figure 1 A schematic diagram of the overall structure of this utility model;
[0021] Figure 2 A perspective view of the shell, protective plate, and other components provided for this utility model;
[0022] Figure 3 Provided by this utility model Figure 2 Side sectional view;
[0023] Figure 4 Provided by this utility model Figure 3 Enlarged view of point A in the image;
[0024] Figure 5 Provided by this utility model Figure 3 Enlarged view of point B in the image;
[0025] Figure 6 Provided by this utility model Figure 2 Exploded 3D view;
[0026] Figure 7 Provided by this utility model Figure 6 Enlarged view of point C in the image;
[0027] Figure 8 Provided by this utility model Figure 6 Rear view;
[0028] Figure 9 Provided by this utility model Figure 8 Enlarged view of point D in the image;
[0029] Figure 10 Provided by this utility model Figure 1 Rear view;
[0030] Figure 11 A schematic diagram of the protective plate closed according to this utility model;
[0031] In the diagram: 1. Door panel; 2. Door frame; 3. Shell; 4. Protective plate; 5. Spring 1; 6. Stop block; 7. Groove; 8. Damper; 9. Moving plate; 10. Box body; 11. Spring 2; 12. Flexible sleeve; 13. Air pipe; 14. Link 1; 15. Shell; 16. Slide plate; 17. Protrusion; 18. Link 2; 19. Push plate; 20. Spring 3. Detailed Implementation
[0032] The preferred embodiments of the present invention will be described below with reference to the accompanying drawings. It should be understood that the preferred embodiments described herein are for illustration and explanation only and are not intended to limit the present invention.
[0033] See attached document Figure 1 - Appendix Figure 11The present invention provides a civil defense engineering protective door with a buffer and shock absorption structure, including a door panel 1 and a door frame 2. The door panel 1 and the door frame 2 are connected by a hinge. The door panel 1 is fixedly connected to the front side of the door panel 1. A protective plate 4 is embedded in the housing 3. Three springs 5 are fixedly connected to the rear side of the protective plate 4. The rear ends of the three springs 5 are all fixedly connected to the inner wall of the rear side of the housing 3. Auxiliary components are provided at the top and bottom of the three springs 5.
[0034] Multiple blocks 6 are fixedly connected to the front side of the housing 3, and multiple grooves 7 are provided on the protective plate 4. The multiple blocks 6 are slidably disposed in the multiple grooves 7 and the blocks 6 are in contact with the rear side of the grooves 7.
[0035] Dampers 8 are fixedly connected to the four corners of the rear side of the protective plate 4, and the rear ends of the four dampers 8 are fixedly connected to the inner wall of the rear side of the shell 3.
[0036] The auxiliary component includes a cavity 1, which is located on the rear side of the protective plate 4. A movable plate 9 is fixedly connected to the cavity 1. A box 10 is fixedly connected to the rear inner wall of the housing 3. Multiple springs 11 are fixedly connected between the box 10 and the movable plate 9. A flexible sleeve 12 is fixedly connected between the movable plate 9 and the box 10. Multiple air pipes 13 are fixedly embedded at the top and bottom of the box 10. The auxiliary component also includes a connecting rod 14, which is fixedly connected inside the cavity 1. A shell 15 is fixedly connected to the rear inner wall of the housing 3. A sliding plate 16 is provided inside the shell 15. Two protrusions 17 are fixedly connected to the bottom of the sliding plate 16. A connecting rod 18 is fixedly connected between the two protrusions 17. A push plate 19 is sleeved on the outside of the connecting rods 14 and 18. The push plate 19 is connected to the connecting rods 14 and 18 through bearings. Multiple springs 20 are fixedly connected to the top of the sliding plate 16. The tops of the multiple springs 20 are fixedly connected to the top inner wall of the shell 15. The flexible sleeve 12 is made of rubber material.
[0037] In this implementation plan, a shell 3, a protective plate 4, a spring 5, and auxiliary components are designed on the door panel 1. In this way, the protective door has the function of buffering and shock absorption. In this way, the impact force generated by the explosion during wartime can be applied to the protective plate 4, and then the spring 5 and auxiliary components can play a buffering and shock absorption role, thereby absorbing the energy of the impact force and reducing the impact on the door.
[0038] In order to achieve normal movement, the device adopts the following technical solution: the protective plate 4 slides in contact with the shell 3, and the sliding plate 16 slides in contact with the shell 15. The sliding contact can ensure the normal movement of the protective plate 4 and the sliding plate 16.
[0039] The usage process of this utility model is as follows: Install the entire device on the wall of the civil defense project, and close the protective door when using it;
[0040] When the door is subjected to an impact, the impact force acts on the protective plate 4, allowing the protective plate 4 to move into the housing 3. This compresses multiple springs 5. The movement of the protective plate 4 also moves the movable plate 9, bringing it closer to the housing 10 and compressing multiple springs 11. The movement of the protective plate 4 also pushes the push plate 19. Since the push plate 19 is movable with the connecting rods 14 and 18 via bearings, the movement of the protective plate 4 under the action of the push plate 19 pushes the sliding plate 16 into the housing 15, compressing multiple springs 20. The action of springs 5, 11, and 20 achieves a buffering and shock-absorbing effect, thereby absorbing the energy of the impact and reducing the impact on the door. This reduces the probability of direct damage to the door and also prevents further damage to the wall.
[0041] A flexible pad is connected between the movable plate 9 and the box 10. When the movable plate 9 and the box 10 are close together, the air in the flexible pad will escape through multiple air tubes 13. Since the air tubes 13 are designed with one end larger than the other, the air resistance is greater when it escapes, which can also play a buffering role. In conjunction with spring 1 5, spring 2 11 and spring 3 20, the shock reduction effect can be increased.
[0042] In addition, a damper 8 was designed. When the protective plate 4 moves, the damper 8 can undergo elastic deformation. After the buffering is completed, the damper 8 can absorb the rebound force of spring 1 5, spring 2 11 and spring 3 20, thereby avoiding damage to the door body caused by the instantaneous rebound force of the protective plate 4.
[0043] The above are merely preferred embodiments of this utility model. Any person skilled in the art may modify this utility model or modify it into an equivalent technical solution using the technical solutions described above. Therefore, any simple modifications or equivalent substitutions made based on the technical solutions of this utility model shall fall within the scope of protection claimed by this utility model.
Claims
1. A protective door for civil defense projects with a buffer and shock absorption structure, comprising a door panel (1) and a door frame (2), wherein the door panel (1) and the door frame (2) are connected by hinges, characterized in that, The front side of the door panel (1) is fixedly connected to a housing (3), a protective plate (4) is embedded in the housing (3), and three springs (5) are fixedly connected to the rear side of the protective plate (4). The rear ends of the three springs (5) are all fixedly connected to the inner wall of the rear side of the housing (3), and auxiliary components are provided at the top and bottom of the three springs (5). The front side of the housing (3) is fixedly connected with multiple blocks (6), and the protective plate (4) is provided with multiple grooves (7). The multiple blocks (6) are slidably disposed in the multiple grooves (7) and the blocks (6) are in contact with the rear side of the grooves (7); Dampers (8) are fixedly connected to the four corners of the rear side of the protective plate (4), and the rear ends of the four dampers (8) are fixedly connected to the inner wall of the rear side of the shell (3).
2. A civil defense engineering protective door with a buffer and shock absorption structure according to claim 1, characterized in that: The auxiliary component includes a cavity one, which is opened on the rear side of the protective plate (4). A movable plate (9) is fixedly connected in the cavity one. A box (10) is fixedly connected to the inner wall of the rear side of the shell (3). A plurality of springs two (11) are fixedly connected between the box (10) and the movable plate (9).
3. A civil defense engineering protective door with a buffer and shock absorption structure according to claim 2, characterized in that: A flexible sleeve (12) is fixedly connected between the movable plate (9) and the box (10), and multiple air pipes (13) are fixedly embedded at the top and bottom of the box (10).
4. A civil defense engineering protective door with a buffer and shock absorption structure according to claim 1, characterized in that: The auxiliary component also includes a first connecting rod (14), which is fixedly connected inside the cavity. The inner wall of the rear side of the housing (3) is fixedly connected to an outer shell (15). The outer shell (15) is provided with a sliding plate (16). The bottom of the sliding plate (16) is fixedly connected to two protrusions (17), and a second connecting rod (18) is fixedly connected between the two protrusions (17).
5. A civil defense engineering protective door with a buffer and shock absorption structure according to claim 4, characterized in that: A push plate (19) is sleeved on the outside of the first link (14) and the second link (18). The push plate (19) is connected to the first link (14) and the second link (18) through a bearing. A plurality of springs (20) are fixedly connected to the top of the slide plate (16). The top ends of the plurality of springs (20) are fixedly connected to the inner wall of the top of the outer shell (15).
6. A civil defense engineering protective door with a buffer and shock absorption structure according to claim 1, characterized in that: The protective plate (4) is in sliding contact with the shell (3).
7. A civil defense engineering protective door with a buffer and shock absorption structure according to claim 3, characterized in that: The flexible sleeve (12) is made of rubber material.
8. A civil defense engineering protective door with a buffer and shock absorption structure according to claim 4, characterized in that: The sliding plate (16) makes sliding contact with the outer shell (15).