Civil air defense sealing door sealing structure

Abstract

The utility model discloses a civil air defense sealing door sealing structure which comprises a door frame, a sealing door body is hinged to the surface of the door frame, and a rotating shaft is rotationally connected to the surface of the sealing door body. A first gear is fixed to the surface of the rotating shaft, two first reinforcing plates are fixed to the inner wall of the sealing door body, a top rack and a bottom rack are engaged to the surface of the first gear and both penetrate through the sealing door body and the first reinforcing plates, and two linkage shafts are rotationally connected to the inner wall of the sealing door body; and a second gear is fixed to the surface of the linkage shaft, the surface of the second gear is meshed with a side rack, the side rack penetrates through the sealing door body, and a plurality of limiting grooves are formed in the surface of the door frame. The civil air defense door has the advantages that the sealing effect of the civil air defense door can be improved, the fastening strength after the civil air defense door is closed can be enhanced, and the problems that an existing civil air defense door is poor in sealing effect and prone to leakage are solved.

Description

Technical Field

[0001] The utility model relates to the technical field of civil air defense equipment, in particular to a sealing structure of a civil air defense sealing door. Background Art

[0002] Civil defense is the activity of taking measures to prevent air raids, resist disasters and provide relief, and implementing rescue operations to prevent and reduce the harm of disasters. Civil defense doors belong to civil defense protection equipment. The classification of civil defense doors is quite distinct, including ordinary single-leaf and double-leaf protective closed doors and closed doors, single-leaf and double-leaf protective closed doors and closed doors with movable thresholds, and other types of civil defense equipment.

[0003] In the daily use of civil air defense doors, in order to prevent poisonous gas from entering the interior of the civil air defense project, it is usually necessary to seal the door gap of the civil air defense door to ensure the isolation of the internal and external air. However, the current sealing method is basically to stick sealing soft glue on the side wall of the door body. The single sealing soft glue setting has a poor sealing effect and can easily cause leakage in the civil air defense door, which is difficult to meet the use requirements. Utility Model Content

[0004] The purpose of the utility model is to provide a sealing structure for a civil air defense door, which has the advantages of being able to improve the sealing effect of the civil air defense door and enhancing the fastening strength of the civil air defense door after closing, thereby solving the problem that the current civil air defense door has a poor sealing effect and is prone to leakage.

[0005] To achieve the above object, the utility model provides the following technical solutions: a sealing structure for a civil air-defense sealed door, comprising a door frame, a sealed door body hinged on the surface of the door frame, and a rotating shaft rotatably connected to the surface of the sealed door body;

[0006] A first gear is fixed on the surface of the rotating shaft, two first reinforcing plates are fixed on the inner wall of the sealed door body, a top rack and a bottom rack are meshed on the surface of the first gear, both of which pass through the sealed door body and the first reinforcing plate, the inner wall of the sealed door body is rotatably connected with two linkage shafts, a second gear is fixed on the surface of the linkage shaft, a side rack is meshed on the surface of the second gear, and the side rack passes through the sealed door body, a plurality of limiting grooves are provided on the surface of the door frame, a first sealing gasket is fixed on the surface of the sealed door body, a movable groove is provided on the surface of the sealed door body, a spring is fixed on the inner wall of the movable groove, and a pressure plate is fixed on the surface of the spring.

[0007] As a preferred sealing structure of a civil air defense sealing door of the utility model, a double groove wheel is fixed on the surface of the rotating shaft, a driven wheel is fixed on the surface of the linkage shaft, and the double groove wheel and the driven wheel are connected by belt transmission.

[0008] As a preferred sealing structure of a civil air-defense sealing door of the utility model, the double-groove pulley and the driven pulley are both timing pulleys, and the belt used to connect the double-groove pulley and the driven pulley is a timing belt.

[0009] Preferably, as a sealing structure of a civil air defense sealing door of the present utility model, a linkage plate is hinged on the surface of the side rack, a limiting plate is hinged on the surface of the linkage plate, and the limiting plate penetrates through the sealing door body.

[0010] Preferably, as a sealing structure of a civil air defense sealing door of the present utility model, a second reinforcing plate is fixed on the inner wall of the sealing door body, and the side rack penetrates through the second reinforcing plate.

[0011] Preferably, as a sealing structure of a civil air defense sealing door of the present utility model, a second sealing pad is fixed on the inner wall of the door frame, and a sealing groove for cooperating with the second sealing pad is provided on the surface of the sealing door body.

[0012] Preferably, as a sealing structure of a civil air defense sealing door of the present utility model, both the first sealing pad and the second sealing pad are made of polyurethane rubber material.

[0013] Preferably, as a sealing structure of a civil air defense sealing door of the present utility model, a connecting plate is embedded and fixed on the inner wall of the door frame, the connecting plate is made of iron, and the pressing plate is a magnet.

[0014] Compared with the prior art, the beneficial effects of the present utility model are as follows:

[0015] When the door frame and the sealing door body in the present utility model are closed, the first sealing pad will contact the inner wall of the door frame and produce compressive deformation, thereby providing a preliminary sealing effect, making it difficult for air to pass through the gap between the door frame and the sealing door body. At the same time, the pressing plate will be affected by the elastic force of the spring to fit the inner wall of the door frame, thereby improving the sealing strength between the door frame and the sealing door body. Then, rotate the rotating shaft. When the rotating shaft rotates, the first gear will drive the top rack and the bottom rack to move in opposite directions, so that the top rack and the bottom rack can enter the limiting groove. At the same time, when the rotating shaft rotates, the linkage shaft can rotate together with the rotating shaft, so that the second gear can also drive the side rack to move towards the inside of the limiting groove together, so that the sealing door body can be fixedly closed with the door frame, and the sealing door body can always fit the inner wall of the door frame, thereby ensuring that there will be no leakage due to the loosening of the sealing door body under long-term closure. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 is a three-dimensional structure schematic diagram of the present utility model;

[0017] Figure 2 is a three-dimensional structure schematic diagram of another perspective of the present utility model;

[0018] Figure 3 is a sectional structure schematic diagram of the present utility model;

[0019] Figure 4 is a partial sectional structure schematic diagram of the present utility model;

[0020] Figure 5 For the present utility model Figure 3 is a schematic enlarged view of the structure at position A in it.

[0021] In the figure: 1, door frame; 2, sealed door body; 3, rotating shaft; 4, first gear; 5, first reinforcing plate; 6, top rack; 7, bottom rack; 8, limiting groove; 9, linkage shaft; 10, second gear; 11, side rack; 12, first gasket; 13, movable groove; 14, spring; 15, pressing plate; 16, second gasket; 17, sealing groove; 18, connecting plate; 19, linkage plate; 20, limiting plate; 21, double-groove pulley; 22, driven wheel; 23, second reinforcing plate. Specific embodiments

[0022] Please refer to Figures 1-5 , a sealing structure for a civil air defense sealed door, including a door frame 1, a sealed door body 2 is hinged on the surface of the door frame 1, and a rotating shaft 3 is rotatably connected to the surface of the sealed door body 2;

[0023] The door frame 1 and the sealed door body 2 form a basic civil air defense sealed door. The setting of the rotating shaft 3 enables the operator to perform a rotating operation on it.

[0024] A first gear 4 is fixed on the surface of the rotating shaft 3, two first reinforcing plates 5 are fixed on the inner wall of the sealed door body 2, a top rack 6 and a bottom rack 7 are meshed on the surface of the first gear 4, the top rack 6 and the bottom rack 7 both penetrate the sealed door body 2 and the first reinforcing plate 5, two linkage shafts 9 are rotatably connected to the inner wall of the sealed door body 2, a second gear 10 is fixed on the surface of the linkage shaft 9, a side rack 11 is meshed on the surface of the second gear 10, the side rack 11 penetrates the sealed door body 2, a plurality of limiting grooves 8 are opened on the surface of the door frame 1, a first gasket 12 is fixed on the surface of the sealed door body 2, a movable groove 13 is opened on the surface of the sealed door body 2, a spring 14 is fixed on the inner wall of the movable groove 13, and a pressing plate 15 is fixed on the surface of the spring 14;

[0025] When the door frame 1 and the sealed door body 2 are closed, the first gasket 12 will contact the inner wall of the door frame 1 and produce compressive deformation, thereby providing a preliminary sealing effect, making it difficult for air to pass through the gap between the door frame 1 and the sealed door body 2. At the same time, the pressing plate 15 will be affected by the elastic force of the spring 14 to fit the inner wall of the door frame 1, thereby improving the sealing strength between the door frame 1 and the sealed door body 2. Then, rotate the rotating shaft 3. When the rotating shaft 3 rotates, the first gear 4 will drive the top rack 6 and the bottom rack 7 to move in opposite directions, so that the top rack 6 and the bottom rack 7 can enter the limiting groove 8. At the same time, when the rotating shaft 3 rotates, the linkage shaft 9 can rotate together with the rotating shaft 3, so that the second gear 10 can also drive the side rack 11 to move towards the inside of the limiting groove 8, thereby enabling the sealed door body 2 to be fixedly closed with the door frame 1, making the sealed door body 2 always fit the inner wall of the door frame 1, so as to ensure that there will be no leakage due to the loosening of the sealed door body 2 under long-term closure.

[0026] Further, a double-groove pulley 21 is fixed on the surface of the rotating shaft 3, and a driven pulley 22 is fixed on the surface of the linkage shaft 9. The double-groove pulley 21 and the driven pulley 22 are connected by belt drive;

[0027] When the rotating shaft 3 rotates, the rotating shaft 3 will drive the double-groove pulley 21 to rotate synchronously, and the double-groove pulley 21 can drive the upper and lower driven pulleys 22 to rotate synchronously, thereby ensuring that the upper and lower linkage shafts 9 can move synchronously with the rotating shaft 3.

[0028] Further, both the double-groove pulley 21 and the driven pulley 22 are timing belt pulleys, and the belt used to connect the double-groove pulley 21 and the driven pulley 22 is a timing belt;

[0029] The combination of the timing belt and the timing belt pulley has excellent friction, which can ensure that the two driven pulleys 22 can rotate synchronously.

[0030] Further, a linkage plate 19 is hinged on the surface of the side rack 11, a limiting plate 20 is hinged on the surface of the linkage plate 19, and the limiting plate 20 penetrates the sealed door body 2;

[0031] When the side rack 11 moves towards the limiting groove 8, the hinged angle between the side rack 11 and the linkage plate 19 will change, enabling the linkage plate 19 to support the limiting plate 20, so that the limiting plate 20 can also move towards the limiting groove 8, thereby improving the tightness after the door frame 1 and the sealed door body 2 are closed.

[0032] Further, a second reinforcing plate 23 is fixed on the inner wall of the sealed door body 2, and the side rack 11 penetrates the second reinforcing plate 23;

[0033] The setting of the second reinforcing plate 23 can enhance the overall structural strength of the sealed door body 2, and the second reinforcing plate 23 can also support the side rack 11, so that the side rack 11 will not shift or rotate during movement.

[0034] Furthermore, a second sealing gasket 16 is fixed to the inner wall of the door frame 1, and a sealing groove 17 for cooperating with the second sealing gasket 16 is formed on the surface of the sealing door body 2;

[0035] When the door frame 1 and the sealing door body 2 are closed, the second sealing gasket 16 will contact the surface of the sealing groove 17, and the second sealing gasket 16 will be compressed and deformed and closely fit the sealing groove 17, thereby improving the sealing effect after the connection between the door frame 1 and the sealing door body 2.

[0036] Furthermore, both the first sealing gasket 12 and the second sealing gasket 16 are made of polyurethane rubber;

[0037] Polyurethane rubber has excellent mechanical properties, and its wear resistance and high-pressure resistance are far superior to those of most other types of rubber. It can be well applied to the sealing door structure that needs to be opened and closed multiple times.

[0038] Furthermore, a connecting plate 18 is embedded and fixed on the inner wall of the door frame 1. The connecting plate 18 is made of iron, and the pressing plate 15 is a magnet;

[0039] Through the settings of the connecting plate 18 and the pressing plate 15, after the door frame 1 and the sealing door body 2 are closed, the pressing plate 15 can be magnetically adsorbed to the surface of the connecting plate 18, and the magnetic adsorption can provide an additional contact force, making it difficult for air to pass through the gap between the pressing plate 15 and the connecting plate 18, thereby improving the sealing effect.

[0040] The above are only the preferred embodiments of the present invention, and are not intended to limit the present invention. Any modifications, equivalent replacements, and improvements made within the spirit and principle of the present invention shall be included in the protection scope of the present invention.

Claims

1. A sealing structure for a sealed door for civil air defense, comprising a door frame (1), a sealed door body (2) being hingedly connected to the surface of the door frame (1), characterized in that: The surface of the sealing door body (2) is rotatably connected with a rotating shaft (3); A first gear (4) is fixed on the surface of the rotating shaft (3); two first reinforcing plates (5) are fixed on the inner wall of the sealed door body (2); a top rack (6) and a bottom rack (7) are meshed on the surface of the first gear (4); both the top rack (6) and the bottom rack (7) penetrate the sealed door body (2) and the first reinforcing plate (5); two linkage shafts (9) are rotatably connected to the inner wall of the sealed door body (2); a second gear (10) is fixed on the surface of the linkage shaft (9); a side rack (11) is meshed on the surface of the second gear (10); the side rack (11) penetrates the sealed door body (2); a plurality of limiting grooves (8) are provided on the surface of the door frame (1); a first sealing gasket (12) is fixed on the surface of the sealed door body (2); a movable groove (13) is provided on the surface of the sealed door body (2); a spring (14) is fixed on the inner wall of the movable groove (13); a pressure plate (15) is fixed on the surface of the spring (14).

2. The sealing structure of a civil air-defense sealing door according to claim 1, characterized in that: A double-grooved wheel (21) is fixed on the surface of the rotating shaft (3), a driven wheel (22) is fixed on the surface of the linkage shaft (9), and the double-grooved wheel (21) and the driven wheel (22) are connected via a belt drive.

3. The sealing structure of a civil air-defense sealing door according to claim 2, characterized in that: The double-grooved wheel (21) and the driven wheel (22) are both timing pulleys, and the belt used to connect the double-grooved wheel (21) and the driven wheel (22) is a timing belt.

4. The sealing structure of a civil air-defense sealing door according to claim 1, characterized in that: A linkage plate (19) is hinged on the surface of the side rack (11), a limit plate (20) is hinged on the surface of the linkage plate (19), and the limit plate (20) passes through the sealed door body (2).

5. The sealing structure of a civil air-defense sealing door according to claim 1, characterized in that: A second reinforcing plate (23) is fixed to the inner wall of the sealing door body (2), and the surface of the side rack (11) passes through the second reinforcing plate (23).

6. The sealing structure of a civil air-defense sealing door according to claim 1, characterized in that: A second sealing gasket (16) is fixed to the inner wall of the door frame (1), and a sealing groove (17) for use with the second sealing gasket (16) is provided on the surface of the sealing door body (2).

7. The sealing structure of a civil air-defense sealing door according to claim 6, characterized in that: The first sealing gasket (12) and the second sealing gasket (16) are both made of polyurethane rubber.

8. The sealing structure of a civil air-defense sealing door according to claim 1, characterized in that: A connecting plate (18) is embedded and fixed on the inner wall of the door frame (1); the connecting plate (18) is made of iron, and the pressing plate (15) is a magnet.

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