Protective airtight door with corrugated steel framework

Abstract

The protective airtight door comprises a door frame, one side of the door frame is connected with an inner door plate in a rotating mode, one side of the inner door plate is fixedly connected with an outer door plate through bolts, the side, opposite to the outer door plate, of the inner door plate is evenly and fixedly connected with corrugated steel frames, and the corrugated steel frames are mutually staggered. The side, away from the inner door plate, of the outer door plate is fixedly connected with a concentric-square-shaped baffle, one side of the concentric-square-shaped baffle is provided with a concentric-square-shaped recess, the concentric-square-shaped baffle is located in the concentric-square-shaped recess and fixedly connected with a concentric-square-shaped gasket, open holes are evenly formed in the upper end of the outer door plate, auxiliary rods are inserted into the open holes, limiting holes are formed in the upper ends of the auxiliary rods, and spring telescopic pipes are inserted into the limiting holes. The door body is arranged to be of a split type structure, the corrugated steel frame structure is arranged between the inner door plate and the outer door plate, and the auxiliary rod is matched for connection and limiting, so that the disassembly procedure of the door body can be simplified, convenience is provided for local maintenance of the door body, and inconvenience in opening and closing of the door body is reduced.

Description

Technical Field

[0001] This utility model relates to the field of airtight door technology, specifically to a protective airtight door with a corrugated steel frame. Background Technology

[0002] Protective airtight doors are special doors that provide both protection and airtightness. They can block shock waves, toxic agents, and harmful substances, ensuring the safety of both personnel and the environment. Common protective airtight doors consist of a door body and a door frame. The door body typically uses two rigid steel plates to form the outer layer, with an internal welded frame filled with fireproof, soundproof, and heat-insulating materials to enhance overall performance. Some door frames use corrugated steel frames or rigid alloy steel, which enhance bending and shear resistance, reduce weight, and increase load-bearing capacity by adding a corrugated structure.

[0003] Protective airtight doors with corrugated steel frames may experience localized deformation due to material fatigue when subjected to significant shock wave pressure, making it difficult to open and close the door. Furthermore, ordinary door frames are cumbersome to disassemble, and maintenance of the internal corrugated steel frame and the outer layer of the protective airtight door is inconvenient.

[0004] Therefore, a protective airtight door with a corrugated steel frame is proposed to solve the problem of inconvenient disassembly and maintenance of the door after it has been subjected to a shock wave. Utility Model Content

[0005] The technical problem to be solved by this utility model is the inconvenience of disassembling and repairing the door after it is subjected to a shock wave. Therefore, a protective airtight door with a corrugated steel frame is proposed.

[0006] The technical solution adopted by this utility model to solve the technical problem is: a protective airtight door with a corrugated steel frame, including a door frame, an inner door panel rotatably connected to one side of the door frame, an outer door panel fixedly connected to one side of the inner door panel by bolts, corrugated steel frames uniformly fixedly connected to the opposite side of the inner door panel and the outer door panel, and the corrugated steel frames are interlaced, a U-shaped baffle fixedly connected to the side of the outer door panel away from the inner door panel, a U-shaped recess opened on one side of the U-shaped baffle, a U-shaped gasket fixedly connected to the U-shaped baffle in the U-shaped recess, an open hole uniformly opened at the upper end of the outer door panel, an auxiliary rod inserted into the open hole, a limit hole opened at the upper end of the auxiliary rod and a spring telescopic tube inserted into the limit hole, and a pull plate fixedly connected to the upper end of the spring telescopic tube.

[0007] As a preferred technical solution of this utility model, a slider is rotatably embedded at the upper end of the pull plate, and the slider contacts the inner side of the door frame. By setting the slider, the friction between the pull plate and the door frame can be reduced.

[0008] As a preferred technical solution of this utility model, a through hole is provided on one side of the pull plate and a spring rod is inserted into the through hole. The end of the spring rod contacts a limiting groove, which is located in the open hole. By setting the spring rod and the limiting groove, the rotation angle of the auxiliary rod can be limited.

[0009] As a preferred technical solution of this utility model, the auxiliary rod has protruding strips fixedly connected to both sides that are far apart from each other. The protruding strips are in contact with the corrugated steel frame. By setting the protruding strips, the structure of the auxiliary rod can be simplified, making it easier for the auxiliary rod to be inserted between two opposite corrugated steel frames.

[0010] As a preferred technical solution of this utility model, the auxiliary rod has a protrusion in contact with it. The protrusion is fixedly connected to the outside of the spring telescopic tube. By setting the protrusion, the spring telescopic tube can be kept to extend and retract linearly, and the rotation of the spring telescopic rod can be reduced.

[0011] This utility model has the following advantages: by setting the door body as a split structure and setting a corrugated steel frame structure between the inner door panel and the outer door panel, and using an auxiliary rod for connection and limiting, the door body disassembly procedure can be simplified, and the partial maintenance of the door body can be facilitated, reducing the inconvenience of opening and closing the door body. Attached Figure Description

[0012] Figure 1 This is a three-dimensional structural diagram of the outer door panel of a protective airtight door with a corrugated steel frame according to a preferred embodiment of the present invention.

[0013] Figure 2 This is a side sectional view of a preferred embodiment of the present invention, showing a protective airtight door with a corrugated steel frame.

[0014] Figure 3 This is a three-dimensional structural diagram of the auxiliary rod of a protective airtight door with a corrugated steel frame according to a preferred embodiment of the present invention.

[0015] Figure 4 This is a side sectional view of the spring telescopic rod of a protective airtight door with a corrugated steel frame, according to a preferred embodiment of the present invention.

[0016] Explanation of reference numerals in the attached drawings: 1. Door frame; 2. Inner door panel; 3. Outer door panel; 4. Corrugated steel frame; 5. U-shaped baffle; 6. U-shaped gasket; 7. Opening hole; 8. Auxiliary rod; 9. Spring telescopic tube; 10. Pull plate; 11. Sliding ball; 12. Spring insert rod; 13. Limiting groove; 14. Raised strip; 15. Protrusion. Detailed Implementation

[0017] The present invention will be further described below with reference to the accompanying drawings.

[0018] Please refer to the following: Figure 1-4 The illustrated protective airtight door with a corrugated steel frame includes a door frame 1. An inner door panel 2 is rotatably connected to one side of the door frame 1. An outer door panel 3 is bolted to one side of the inner door panel 2. Corrugated steel frames 4 are evenly and interlaced on opposite sides of the inner door panel 2 and outer door panel 3. This interlaced structure of the corrugated steel frames 4 increases the operating distance when the inner door panel 2 and outer door panel 3 are separated, facilitating maintenance in case of local deformation. A U-shaped baffle is fixedly connected to the side of the outer door panel 3 away from the inner door panel 2. 5. A recessed groove is provided on one side of the recessed groove. A gasket 6 is fixedly connected to the recessed groove. The gasket 6 is made of rubber and can increase the sealing when the door body is connected to the door frame 1. Opening holes 7 are evenly provided on the upper end of the outer door panel 3. An auxiliary rod 8 is inserted into the opening hole 7. A limit hole is provided on the upper end of the auxiliary rod 8 and a spring telescopic tube 9 is inserted into the limit hole. A pull plate 10 is fixedly connected to the upper end of the spring telescopic tube 9. By pulling the pull plate 10, the auxiliary rod 8 can be moved up and down.

[0019] Among them, the upper end of the pull plate 10 is rotatably embedded with a slider 11, which contacts the inner side of the door frame 1. By setting the slider 11, the friction between the pull plate 10 and the door frame 1 is reduced.

[0020] The pull plate 10 has a through hole on one side and a spring rod 12 is inserted into the through hole. The end of the spring rod 12 contacts a limiting groove 13, which is located in the open hole 7. By setting the limiting groove 13 in conjunction with the spring rod 12, the limiting auxiliary rod 8 can be stabilized and the rotation of the auxiliary rod 8 can be reduced.

[0021] Among them, the auxiliary rod 8 has a protruding strip 14 fixedly connected to both sides that are far apart from each other. The protruding strip 14 contacts the corrugated steel frame 4. By setting the protruding strip 14, the contact surface between the inner door panel 2 and the outer door panel 3 can be increased, and a stable support effect can be provided for the corrugated steel frame 4.

[0022] The auxiliary rod 8 has a protrusion 15 in contact with it. The protrusion 15 is fixedly connected to the outside of the spring telescopic tube 9. By setting the protrusion 15, the rotation of the spring telescopic tube 9 can be reduced, and the auxiliary rod 8 can be prevented from shaking.

[0023] Working principle: When a local dent occurs on the surface of the outer door panel 3 or the inner door panel 2, the inner door panel 2 and the outer door panel 3 are unfolded. The pull plate 10 can be pulled, causing the auxiliary rod 8 and the spring telescopic tube 9 to move upward. The auxiliary rod 8 can be removed, and the bolts can be removed, allowing the inner door panel 2 and the outer door panel 3 to separate, thereby repairing the local dent. Under normal circumstances, due to the presence of the spring insert 12 and the protrusion 15, the relative position of the pull plate 10 and the auxiliary rod 8 is stable, allowing the protrusion 15 to maintain contact with the corrugated steel frame 4, thus improving the support effect of the corrugated steel frame 4.

[0024] The above are merely preferred embodiments of this utility model. It should be noted that those skilled in the art can make various improvements and modifications without departing from the principle of this utility model, and these improvements and modifications should also be considered within the scope of protection of this utility model.

[0025] All other parts of this utility model that are not described in detail belong to the prior art, and therefore will not be described in detail here.

[0026] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of this utility model, and are not intended to limit it. Although the utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some or all of the technical features therein. Such modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of this utility model.

Claims

1. A protective airtight door with a corrugated steel frame, comprising a door frame (1), characterized in that, The door frame (1) is rotatably connected to an inner door panel (2) on one side. An outer door panel (3) is fixedly connected to one side of the inner door panel (2) by bolts. Corrugated steel frames (4) are evenly fixedly connected to the opposite side of the inner door panel (2) and the outer door panel (3), and the corrugated steel frames (4) are interlaced. A U-shaped baffle (5) is fixedly connected to the side of the outer door panel (3) away from the inner door panel (2). A U-shaped recess is opened on one side of the U-shaped baffle (5). A U-shaped gasket (6) is fixedly connected to the U-shaped baffle (5) in the U-shaped recess. An open hole (7) is evenly opened at the upper end of the outer door panel (3). An auxiliary rod (8) is inserted into the open hole (7). A limit hole is opened at the upper end of the auxiliary rod (8), and a spring telescopic tube (9) is inserted into the limit hole. A pull plate (10) is fixedly connected to the upper end of the spring telescopic tube (9).

2. A protective airtight door with a corrugated steel frame as described in claim 1, characterized in that, The upper end of the pull plate (10) is rotatably fitted with a slider (11), which contacts the inner side of the door frame (1).

3. A protective airtight door with a corrugated steel frame as described in claim 2, characterized in that, The pull plate (10) has a through hole on one side and a spring rod (12) is inserted into the through hole. The end of the spring rod (12) contacts a limiting groove (13), which is located in the open hole (7).

4. A protective airtight door with a corrugated steel frame as described in claim 1, characterized in that, The auxiliary rod (8) has protruding strips (14) fixedly connected to both sides that are far apart from each other, and the protruding strips (14) are in contact with the corrugated steel frame (4).

5. A protective airtight door with a corrugated steel frame as described in claim 4, characterized in that, The auxiliary rod (8) has a protrusion (15) in contact with it, and the protrusion (15) is fixedly connected to the outside of the spring telescopic tube (9).

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