Civil air defense door with movable doorsill

Abstract

The utility model relates to a civil air defense door with a movable doorsill, which comprises a door plate, a door frame, the doorsill, a limiting component, a positioning component, a lifting component and a bottom plate, the door plate is hinged with the door frame, and a notch is arranged at the bottom end of the door frame; the threshold is arranged in the notch in a liftable manner and comprises a narrow part and a wide part; the limiting assembly is used for fixing the narrow part to the door frame when the narrow part rises to the highest position. The positioning assemblies are arranged on the two sides of the doorsill and used for keeping the doorsill stable in the lifting process of the doorsill. The lifting assembly is arranged below the doorsill and used for driving the doorsill to lift; the bottom plate is arranged below the lifting assembly. The doorsill lifting device has the advantages that the doorsill is lifted by the lifting component, so that the doorsill can be withdrawn when needed, and transportation is facilitated.

Description

Technical Field

[0001] The utility model relates to the technical field of civil air defense doors, in particular to a civil air defense door with a movable threshold. Background Art

[0002] Civil air defense doors are a key part of civil air defense projects, used to resist external threats such as wars and natural disasters, and to protect the safety of internal personnel and equipment. It uses high-strength materials and designs, and has excellent sealing and rapid opening and closing capabilities. Civil air defense doors are widely used in underground projects, important facilities, urban protection systems, and emergency shelters. They are important facilities for improving national security protection capabilities and protecting people's lives and property. And it is precisely because of the above-mentioned needs that civil air defense doors are mostly designed with thresholds. Most of these thresholds are dead thresholds, that is, they cannot be moved or raised or lowered. However, in underground garages, warehouses, hospitals and other places where people and vehicles frequently enter and exit, the design of dead thresholds is not conducive to the flow of personnel, vehicle operation, and freight loading and unloading processes.

[0003] In view of this, it is necessary to propose improvements for the above-mentioned defects. Utility Model Content

[0004] The technical problem to be solved by the utility model is to overcome the above-mentioned defects and provide a human defense door with a movable threshold.

[0005] In order to solve the above technical problems, the technical solution provided by the utility model is:

[0006] A civil air defense door with a movable threshold, comprising:

[0007] A door panel and a door frame, wherein the door panel and the door frame are hinged to each other, and a notch is provided at the bottom end of the door frame;

[0008] A threshold, which is arranged in the gap in a liftable manner and includes a narrow portion and a wide portion;

[0009] A limiting assembly, which is used to fix the narrow portion to the door frame when it is raised to the highest position;

[0010] Positioning components, which are arranged on both sides of the threshold and are used to keep the threshold stable during its lifting and lowering process;

[0011] A lifting component, which is arranged below the threshold and is used to drive the threshold to rise and fall;

[0012] A bottom plate is arranged below the lifting assembly.

[0013] As an improvement, a protrusion is fixedly connected to the middle of the bottom end of the wide part, and the lifting assembly includes a rotating plate 1, which is rotatably connected to the protrusion, and the bottom end of the rotating plate 1 is rotatably connected to a rotating plate 2, and the rotating plate 2 is rotatably connected to two fixed blocks arranged on the bottom plate.

[0014] As an improvement, a gear is provided at the front end of the rotating plate 2, a rack meshing with the gear is provided below the gear, the rack is slidably connected to the base plate, a telescopic cylinder 1 is fixedly connected to one side of the rack, and the telescopic cylinder 1 is fixedly connected to the base plate by a cylinder seat.

[0015] As an improvement, an insert shaft 1 is fixedly connected to the protrusion, and the insert shaft 1 is rotatably connected to a rotating plate 1. An insert shaft 2 is inserted at a lower end of the rotating plate, and the insert shaft 2 is rotatably connected to a rotating plate 2. An insert shaft 3 is fixedly connected to the bottom end of the rotating plate 2, and the insert shaft 3 is rotatably connected to a fixed block, and the insert shaft 3 is fixedly connected to a gear.

[0016] As an improvement, the positioning assembly includes two support columns fixedly connected to the base plate, small holes are opened on both sides of the wide part, the support columns are arranged in the small holes, the top and bottom ends of the support columns are respectively fixedly connected to the limiting part two and the limiting part one, and the narrow part is located between the limiting part two and the limiting part one.

[0017] As an improvement, the limiting assembly includes a cavity one opened on both sides of the narrow part, and a cavity two is opened on the part of the door frame located at the notch for use with cavity one, and a telescopic cylinder two is arranged in cavity one, and an output end of the telescopic cylinder two is fixedly connected to an abutment block, and the abutment block slides in cavity one and cavity two.

[0018] As an improvement, the second bottom end of the telescopic cylinder is fixedly connected with a cushion block, and the cushion block is fixedly connected to the first bottom end of the cavity.

[0019] As an improvement, the width of the narrow portion is not greater than the width of the notch, the width of the wide portion is greater than the width of the notch, the portion below the notch is buried in a cavity opened in the foundation, and the door frame is installed on the wall and the ground.

[0020] The advantages of the utility model are as follows: the utility model designs a liftable threshold by opening a gap under the door frame. The threshold is driven by a lifting component and limited by a limit component. It can be lowered to be parallel to the ground when needed. Compared with traditional technologies, the design of the utility model is conducive to meeting the human logistics needs of underground garages, warehouses, hospitals and other areas. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 The utility model is a three-dimensional structure of a human defense door with a movable threshold Figure 1 ;

[0022] Figure 2 The utility model is a three-dimensional structure of a human defense door with a movable threshold Figure 2 ;

[0023] Figure 3 This is a rear cross-sectional view of a human air defense door with a movable threshold according to the utility model;

[0024] Figure 4 This is an enlarged view of the A portion of a human air defense door with a movable threshold according to the utility model;

[0025] Figure 5 This is an enlarged view of the B part of a human defense door with a movable threshold of the utility model.

[0026] As shown in the figure: 1. Door panel; 2. Door frame; 3. Notch; 4. Door sill; 5. Narrow part; 6. Wide part; 7. Limiting assembly; 8. Positioning assembly; 9. Lifting assembly; 10. Bottom plate; 11. Protruding part; 12. Rotating plate one; 13. Rotating plate two; 14. Fixed block; 15. Gear; 16. Rack; 17. Telescopic cylinder one; 18. Cylinder seat; 19. Insert shaft one; 20. Insert shaft two; 21. Insert shaft three; 22. Support column; 23. Limiting part two; 24. Limiting part one; 25. Cavity one; 26. Cavity two; 27. Telescopic cylinder two; 28. Abutment block; 29. ​​Pad block. DETAILED DESCRIPTION

[0027] Exemplary embodiments will be described in detail herein, examples of which are shown in the accompanying drawings. When the following description refers to the drawings, the same numbers in different drawings represent the same or similar elements unless otherwise indicated. The embodiments described in the following exemplary embodiments do not represent all embodiments consistent with the present disclosure. Instead, they are merely examples of devices consistent with some aspects of the present disclosure as detailed in the appended claims.

[0028] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0029] Please refer to the instruction manual Figures 1 to 5 The utility model discloses a civil air defense door with a movable threshold, which mainly includes a door panel 1 and a door frame 2, a threshold 4, a limiting assembly 7, a positioning assembly 8, a lifting assembly 9 and a bottom plate 10, wherein the door panel 1 and the door frame 2 are hinged to each other, and a notch 3 is opened at the bottom end of the door frame 2; the threshold 4 is liftably arranged in the notch 3, and includes a narrow portion 5 and a wide portion 6, the width of the narrow portion 5 is not greater than the width of the notch 3, and the width of the wide portion 6 is greater than the width of the notch 3, and the lifting and lowering of the threshold 4 is fixed by the limiting assembly 7, that is, the limiting assembly 7 is used to fix the narrow portion 5 to the door frame 2 when it is raised to the highest.

[0030] Specifically, as shown in the attached manual Figure 3 and attached Figure 5 As shown, the limiting assembly 7 includes a cavity 25 opened on both sides of the narrow portion 5, a cavity 26 used in conjunction with the cavity 25 is opened on the portion of the door frame 2 located at the notch 3, and a telescopic cylinder 27 is arranged in the cavity 25, and an abutment block 28 is fixedly connected to the output end of the telescopic cylinder 27, and the abutment block 28 slides in the cavity 25 and the cavity 26. A cushion block 29 is fixedly connected to the bottom end of the telescopic cylinder 27, and the cushion block 29 is fixedly connected to the bottom end of the cavity 25. Under normal conditions, the telescopic cylinder 27 contracts and drives the abutment block 28 to retract into the cavity 25. When the threshold 4 rises to the top, the cavity 25 and the cavity 26 are connected. At this time, the output end of the telescopic cylinder 27 drives the abutment block 28 to slide and is clamped at the junction of the cavity 25 and the cavity 26 to fix the narrow portion 5 of the door frame 2 and the threshold 4.

[0031] The lifting and lowering of the threshold 4 depends on the lifting component 9, the lifting component 9 is arranged below the threshold 4, the bottom plate 10 is arranged below the lifting component 9, and the middle part of the bottom end of the wide part 6 is fixedly connected with a protrusion 11. Specifically, the above-mentioned lifting component 9 includes a rotating plate 12, and the protrusion 11 is fixedly connected with an insertion shaft 19, and the insertion shaft 19 is rotatably connected to the rotating plate 12. The lower end of the rotating plate 12 is fixedly connected with an insertion shaft 20, and the insertion shaft 20 is rotatably connected to the rotating plate 2 13. The rotating plate 2 13 is rotatably connected to two fixed blocks 14 arranged on the bottom plate 10. Specifically, the bottom end of the rotating plate 2 13 is plugged with an insertion shaft 3 21, and the insertion shaft 3 21 is rotatably connected to the fixed block 14. The insertion shaft 3 21 is fixedly connected to the gear 15 arranged at the front end of the rotating plate 2 13. A rack 16 meshing with the gear 15 is provided below the gear 15 , and the rack 16 is slidably connected to the base plate 10 . A telescopic cylinder 17 is fixedly connected to one side of the rack 16 , and the telescopic cylinder 17 is fixedly connected to the base plate 10 by a cylinder seat 18 .

[0032] Therefore, the telescopic cylinder 17 is energized and extended, driving the rack 16 to slide. Under the action of meshing, the gear 15 rotates clockwise. Since it is fixedly connected to the plug shaft 3 21, it drives the plug shaft 3 21 to rotate clockwise. Since the plug shaft 3 21 is fixedly connected to the rotating plate 2 13, the rotating plate 2 13 makes a clockwise circular motion with the plug shaft 3 21 as the center, thereby driving the plug shaft 2 20 to rotate, thereby realizing the rise in the vertical direction, and then driving the rotating plate 1 12 and the wide part 6 to rise, realizing the rise of the threshold 4 in the overall direction, and vice versa.

[0033] In the process of lifting, in order to make it more stable, the utility model is equipped with a positioning assembly 8, which is arranged on both sides of the threshold 4. Further, the assembly includes two support columns 22 fixedly connected to the bottom plate 10, and small holes are opened on both sides of the wide part 6. The support columns 22 are arranged in the small holes. The top and bottom ends of the support columns 22 are respectively fixedly connected to the limiting part 23 and the limiting part 1 24, and the narrow part 5 is located between the limiting part 23 and the limiting part 1 24. When in use, it will not fall to other places through the guidance of the support column 22. Of course, it should be noted that in the civil air defense door designed by the utility model, each component below the notch 3 is buried in the cavity opened in the foundation, and the door frame 2 is installed on the wall and the ground.

[0034] It should also be noted that the electrical components appearing in this article are all connected to the external main controller and 220V AC power, and the main controller can be a conventional known device that controls a computer, etc. The specific implementation method of the present disclosure omits the detailed description of known functions and known components. To ensure the compatibility of the equipment, the operating methods used are consistent with the parameters of marketed equipment.

[0035] The above description of the utility model and its implementation methods is not restrictive. The drawings show only one implementation method of the utility model, and the actual structure is not limited thereto. In short, if ordinary technicians in this field are inspired by it and design structural methods and embodiments similar to the technical solution without creativity without departing from the purpose of the invention of the utility model, they should all fall within the protection scope of the utility model.

Claims

1. A civil air defense door with a movable threshold, characterized in that: include: A door panel (1) and a door frame (2), wherein the door panel (1) and the door frame (2) are hinged to each other, and a notch (3) is formed at the bottom end of the door frame (2); A threshold (4), the threshold (4) being arranged in the notch (3) in a liftable manner, and comprising a narrow portion (5) and a wide portion (6); A limiting assembly (7), wherein the limiting assembly (7) is used to fix the narrow portion (5) to the door frame (2) when the narrow portion (5) is raised to the highest position; A positioning assembly (8), the positioning assembly (8) being arranged on both sides of the threshold (4) and used to keep the threshold (4) stable during the process of raising and lowering the threshold; A lifting component (9), the lifting component (9) being arranged below the threshold (4) and used for driving the threshold to rise and fall; A bottom plate (10), wherein the bottom plate (10) is arranged below the lifting assembly (9).

2. The civil defense door with a movable threshold according to claim 1 is characterized in that: A protruding portion (11) is fixedly connected to the middle of the bottom end of the wide portion (6), and the lifting assembly (9) comprises a rotating plate 1 (12), wherein the rotating plate 1 (12) is rotatably connected to the protruding portion (11), and a rotating plate 2 (13) is rotatably connected to the bottom end of the rotating plate 1 (12), and the rotating plate 2 (13) is rotatably connected to two fixed blocks (14) arranged on the bottom plate (10).

3. The civil defense door with a movable threshold according to claim 2 is characterized in that: A gear (15) is provided at the front end of the rotating plate 2 (13); a rack (16) meshing with the gear (15) is provided below the gear (15); the rack (16) is slidably connected to the bottom plate (10); a telescopic cylinder (17) is fixedly connected to one side of the rack (16); the telescopic cylinder (17) is fixedly connected to the bottom plate (10) by means of a cylinder seat (18).

4. The civil defense door with a movable threshold according to claim 3 is characterized in that: The protruding portion (11) is fixedly connected to an insert shaft 1 (19), the insert shaft 1 (19) is rotatably connected to the rotating plate 1 (12), the lower end of the rotating plate 1 (12) is plugged with an insert shaft 2 (20), the insert shaft 2 (20) is rotatably connected to the rotating plate 2 (13), the bottom end of the rotating plate 2 (13) is fixedly connected to an insert shaft 3 (21), the insert shaft 3 (21) is rotatably connected to the fixed block (14), and the insert shaft 3 (21) is fixedly connected to the gear (15).

5. The civil defense door with a movable threshold according to claim 1, characterized in that: The positioning assembly (8) comprises two support columns (22) fixedly connected to the bottom plate (10), small holes are formed on both sides of the wide portion (6), the support columns (22) are arranged in the small holes, the top and bottom ends of the support columns (22) are respectively fixedly connected to the second limiting portion (23) and the first limiting portion (24), and the narrow portion (5) is located between the second limiting portion (23) and the first limiting portion (24).

6. The civil defense door with a movable threshold according to claim 1, characterized in that: The limiting assembly (7) comprises a cavity one (25) opened on both sides of the narrow portion (5); a cavity two (26) for use with the cavity one (25) is opened on the portion of the door frame (2) located at the notch (3); a telescopic cylinder two (27) is arranged in the cavity one (25); an output end of the telescopic cylinder two (27) is fixedly connected to an abutment block (28); the abutment block (28) slides in the cavity one (25) and the cavity two (26).

7. The civil defense door with a movable threshold according to claim 6, characterized in that: The bottom end of the telescopic cylinder 2 (27) is fixedly connected to a cushion block (29), and the cushion block (29) is fixedly connected to the bottom end of the cavity 1 (25).

8. The civil defense door with a movable threshold according to claim 1, characterized in that: The width of the narrow portion (5) is not greater than the width of the notch (3), the width of the wide portion (6) is greater than the width of the notch (3), the portion below the notch (3) is buried in a cavity opened in the foundation, and the door frame (2) is installed on the wall and the ground.

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