High-strength door frame of civil air defense door

Abstract

The utility model relates to the technical field of civil air defense doors, in particular to a civil air defense door high-strength door frame which comprises a door frame assembly and clamping connecting assemblies connected to the two side edges of the door frame assembly, and each clamping connecting assembly comprises a strip-shaped fixing plate, a strip-shaped clamping plate, a sliding piece and a locking rod piece. The strip-shaped fixing plate is connected to the back face of the door frame assembly, the strip-shaped clamping plate is connected to the front face of the door frame assembly through a sliding piece, a vertical plate fixed to the side edge of the door frame assembly is connected between the strip-shaped fixing plate and the strip-shaped clamping plate, and a plurality of connecting rod pieces penetrate through the top of the door frame assembly at intervals. The civil air defense door is reasonable in structure, the connection contact area of the door frame and the wall body is increased, the door frame and the wall body are tightly connected, the overall structural strength of the door frame is enhanced, and the using effect of the civil air defense door is improved.

Description

TECHNICAL FIELD

[0001] The utility model relates to a civil air defence door technical field especially relates to a civil air defence door high strength door frame. BACKGROUND

[0002] As a key component of civil air defence engineering, civil air defence doors bear the important responsibility of preventing nuclear radiation, biochemical pollution and conventional weapon destruction. As one of the core components of civil air defence doors, door frames not only support and fix door leaves but also provide critical sealing performance, thereby ensuring the maximization of protection effect. These door frames are generally made of high-strength steel to meet the mechanical strength and corrosion resistance requirements in extreme environments. Civil air defence doors include a door frame and a door leaf arranged in the door frame, the door leaf is connected with the door frame through a hinge, and the door frame is a connecting part between the civil air defence door and the wall, which is usually welded by thick steel plates to ensure its strength and stability. The design of the door frame enables it to withstand shock wave load and transfer these loads to the wall.

[0003] For the related technologies in the above, the inventors found that when the door frame is connected with the wall, a rod-shaped connecting piece (such as an expansion bolt) is mostly used for connection, and since the contact area of the rod-shaped connecting piece with the wall is limited, when the door frame is subjected to external impact force, the rod-shaped connecting piece is prone to be separated from the wall, which cannot tightly connect the door frame with the wall, resulting in weak structural strength of the door frame and reduced use effect of the civil air defence door. UTILITY MODEL CONTENT

[0004] The utility model mainly solves the technical problem to provide a civil air defence door high strength door frame, increases the connecting contact area of the door frame and the wall, makes the door frame and the wall connect closely, strengthens the overall structural strength of the door frame, improves the use effect of the civil air defence door.

[0005] To solve the above technical problems, one technical scheme of the utility model is to provide a civil air defence door high strength door frame, which comprises a door frame assembly and clamping connection assemblies connected on both sides of the door frame assembly, the clamping connection assemblies comprise strip-shaped fixed plates and strip-shaped clamping plates, and further comprises sliding members and locking rods, the strip-shaped fixed plates are connected on the back surface of the door frame assembly, the strip-shaped clamping plates are connected on the front surface of the door frame assembly through the sliding members, vertical plates fixed on the side edges of the door frame assembly are connected between the strip-shaped fixed plates and the strip-shaped clamping plates, and a plurality of connecting rods are arranged at intervals on the top of the door frame assembly.

[0006] By adopting the above technical solution, during installation, the two strip clamping plates are moved towards each other so that the outer edges of the strip clamping plates are flush with the side edges of the door frame assembly. Next, the door frame is moved into the rectangular hole set in the wall, and a groove is opened in the ground so that the lower side of the door frame assembly is located in the groove. The strip fixing plate contacts the side of the wall, and the vertical plate abuts against the inner wall of the rectangular hole in the wall, limiting the door frame along its width. The strip clamping plates on both sides of the door frame assembly are moved in the opposite direction so that the strip clamping plates and the strip fixing plates are located on both sides of the wall. The locking rod is operated to drive the strip clamping plates and the strip fixing plates to be tightly connected to the wall, so that the door frame assembly is tightly connected to the wall, which enhances the overall structural strength of the door frame. That is, the impact force received by the door frame can be quickly transferred to the wall for distribution, improving the use effect of the air-raid shelter door.

[0007] In a preferred embodiment, the present invention can be further configured such that: the sliding member includes oblong holes spaced apart on the strip clamping plate, bolts are respectively inserted into the oblong holes, and the ends of the bolts are spirally inserted into the door frame assembly.

[0008] By adopting the above technical solution, the bolts are loosened to facilitate the movement of the strip clamping plate along the width direction of the door frame assembly. After the position of the strip clamping plate is adjusted, the bolts are tightened to fix the strip clamping plate to the door frame assembly.

[0009] In a preferred embodiment, the present invention can be further configured as follows: the side of the strip clamping plate is provided with a plurality of opening slots at intervals, the vertical plate is provided with relief slots at intervals equal to and corresponding to the number of opening slots, the locking rod includes a screw rod passing through the opening slots and the relief slots respectively, one end of the screw rod is connected to the strip fixing plate, and the other end is screwed to a locking nut.

[0010] By adopting the above technical solution and setting the clearance groove, the vertical plate can contact the inner wall of the rectangular hole in the wall, and the screw will not interfere with the wall. Rotating the locking nut reduces the gap between the strip clamping plate and the strip fixing plate, that is, the strip clamping plate and the strip fixing plate are tightly connected to the wall, so that the door frame assembly is tightly connected to the wall.

[0011] In a preferred embodiment, the present invention can be further configured such that: the door frame assembly includes four channel steels welded end to end and four L-shaped plates, the L-shaped plates being welded to the openings of the channel steels, and the corners of the L-shaped plates corresponding to the connection points of adjacent channel steels.

[0012] By adopting the above technical solution, since the connection of adjacent channel steel corresponds to the corner of L-shaped plate, the connection of adjacent L-shaped plate is staggered with the connection of adjacent channel steel, reducing the impact of welding on the overall structural strength of the door frame.

[0013] In a preferred embodiment, the present invention can be further configured such that: an L-shaped reinforcing rib is welded to the inner cavity of the connection between adjacent channel steels, and an L-shaped hole is provided on the L-shaped plate, with a corresponding L-shaped reinforcing rib passing through the L-shaped hole, and the L-shaped reinforcing rib is welded and fixed to the L-shaped plate.

[0014] By adopting the above technical solution, adjacent channel steels are connected by L-shaped reinforcing ribs, and the L-shaped reinforcing ribs are welded and fixed to L-shaped plates, which increases the structural strength of the corner of the door frame assembly.

[0015] In a preferred embodiment, the present invention can be further configured such that: the top inner wall of the door frame assembly has rectangular holes equal in number to the connecting rods; the connecting rods pass through the rectangular holes and are mounted on the door frame assembly; one end of the connecting rod extends into the wall and is fixedly connected thereto; the connecting rod includes an expansion bolt and a locking nut.

[0016] By adopting the above technical solution, a blind hole is opened on the inner wall of the rectangular hole in the wall at the position corresponding to the rectangular hole. After the expansion bolt is passed through the door frame assembly and inserted into the blind hole, the expansion bolt is operated to fix it to the wall. Then, the locking nut is rotated to make the door frame assembly tightly connected to the wall.

[0017] In a preferred embodiment, the present invention can be further configured such that: a strip reinforcing plate is connected to the outer side of the strip clamping plate, and a sealing plate is detachably connected to the rectangular hole.

[0018] By adopting the above technical solution and using strip reinforcing plates, the structural strength of the strip clamping plate is enhanced. Since the sealing plate is installed in the rectangular hole, the rectangular hole is sealed.

[0019] In summary, this utility model has at least one of the following beneficial technical effects:

[0020] The door frame assembly is tightly connected to the wall through the strip fixing plate and strip clamping plate on the clamping connection assembly, which expands the connection contact area between the door frame and the wall and enhances the overall structural strength of the door frame. In other words, the impact force on the door frame can be quickly transferred to the wall for distribution, thus improving the effectiveness of the air-raid shelter door. Attached Figure Description

[0021] To more clearly illustrate the technical solutions in the embodiments of this utility model, the drawings used in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort, wherein:

[0022] Figure 1This is a structural schematic diagram of a preferred embodiment of a high-strength door frame for a civil defense door according to this utility model.

[0023] Figure 2 yes Figure 1 Exploded view of the middle door frame assembly.

[0024] In the diagram: 10. Door frame assembly; 20. Clamping connection assembly; 3. Vertical plate; 40. Connecting rod; 5. Opening groove; 6. Clearance groove; 7. L-shaped reinforcing rib; 8. L-shaped hole; 9. Rectangular hole;

[0025] 11. Channel steel; 12. L-shaped plate;

[0026] 21. Strip fixing plate; 22. Strip clamping plate; 23. Sliding component; 24. Locking rod;

[0027] 231. Oblong hole; 232. Bolt;

[0028] 241. Screw; 242. Locking nut (one);

[0029] 31. Strip reinforcement plate; 32. Sealing plate;

[0030] 41. Expansion bolts; 42. Locking nuts (two types). Detailed Implementation

[0031] 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.

[0032] It should be noted that these figures are simplified schematic diagrams, which only illustrate the basic structure of the present invention in a schematic manner, and therefore only show the components related to the present invention.

[0033] Reference Figures 1-2 This utility model discloses a high-strength door frame for a civil defense door, comprising: a door frame assembly 10 and clamping connection assemblies 20 connected to both sides of the door frame assembly 10. The clamping connection assemblies 20 include a strip fixing plate 21 and a strip clamping plate 22, as well as a sliding member 23 and a locking rod 24. The strip fixing plate 21 is connected to the back of the door frame assembly 10, and the strip clamping plate 22 is connected to the front of the door frame assembly 10 through the sliding member 23. A vertical plate 3 fixed to the side of the door frame assembly 10 is connected between the strip fixing plate 21 and the strip clamping plate 22. A plurality of connecting rods 40 are spaced through the top of the door frame assembly 10.

[0034] The top inner wall of the door frame assembly 10 is provided with rectangular holes 9, the same number as the connecting rods 40. The connecting rods 40 pass through the rectangular holes 9 and are mounted on the door frame assembly 10. One end of the connecting rod 40 extends into the wall and is fixedly connected to it. The connecting rod 40 includes an expansion bolt 41 and a locking nut 42. A blind hole is opened on the inner wall of the rectangular hole in the wall at a position corresponding to the rectangular hole 9. After the expansion bolt 41 passes through the door frame assembly 10 and extends into the blind hole, the expansion bolt 41 is operated to fix it to the wall. Then, the locking nut 42 is rotated to make the door frame assembly 10 tightly connected to the wall.

[0035] The sliding member 23 includes oblong holes 231 spaced apart on the strip clamping plate 22. Bolts 232 are respectively inserted into the oblong holes 231. The ends of the bolts 232 are spirally inserted into the door frame assembly 10. Loosening the bolts 232 allows the strip clamping plate 22 to move along the width direction of the door frame assembly 10. After the position of the strip clamping plate 22 is adjusted, the bolts are tightened to fix the strip clamping plate 22 to the door frame assembly 10.

[0036] The strip clamping plate 22 has several opening slots 5 spaced apart on its side, and the vertical plate 3 has a number of corresponding clearance slots 6 spaced apart. The locking rod 24 includes a screw 241 that passes through the opening slots 5 and clearance slots 6 respectively. One end of the screw 241 is connected to the strip fixing plate 21, and the other end is screwed to a locking nut 242. By setting the clearance slots 6, the vertical plate 3 can contact the inner wall of the rectangular hole in the wall, and the screw 241 will not interfere with the wall. Rotating the locking nut 242 reduces the gap between the strip clamping plate 22 and the strip fixing plate 21, that is, the strip clamping plate 22 and the strip fixing plate 21 are tightly connected to the wall, so that the door frame assembly 10 is tightly connected to the wall.

[0037] The door frame assembly 10 includes four channel steels 11 welded end to end and four L-shaped plates 12. The L-shaped plates 12 are welded to the openings of the channel steels 11, and the corners of the L-shaped plates 12 correspond to the connection points of the adjacent channel steels 11. Since the connection points of the adjacent channel steels 11 correspond to the corners of the L-shaped plates 12, the connection points of the adjacent L-shaped plates 12 are staggered from the connection points of the adjacent channel steels 11, reducing the impact of welding on the overall structural strength of the door frame.

[0038] The inner cavity of the connection between adjacent channel steels 11 is welded with L-shaped reinforcing ribs 7. L-shaped holes 8 are provided on the L-shaped plates 12 respectively, and corresponding L-shaped reinforcing ribs 7 are inserted into the L-shaped holes 8. The L-shaped reinforcing ribs 7 are welded and fixed to the L-shaped plates 12. The adjacent channel steels 11 are connected by the L-shaped reinforcing ribs 7, and the L-shaped reinforcing ribs 7 are welded and fixed to the L-shaped plates 12, which increases the structural strength at the corner of the door frame assembly 10.

[0039] A strip-shaped reinforcing plate 31 is connected to the outer side of the strip-shaped clamping plate 22, and a sealing plate 32 is detachably connected inside the rectangular hole 9. The use of the strip-shaped reinforcing plate 31 enhances the structural strength of the strip-shaped clamping plate 22, and the sealing plate 32 is installed inside the rectangular hole 9 to seal the rectangular hole 9.

[0040] The implementation principle of this embodiment is as follows: During installation, the two strip clamping plates 22 are moved towards each other so that the outer edges of the strip clamping plates 22 are flush with the side edges of the door frame assembly 10. Next, the door frame is moved into the rectangular hole set in the wall, and a groove is opened in the ground so that the lower side edge of the door frame assembly 10 is located in the groove. The strip fixing plate 21 contacts the side of the wall, and the vertical plate 3 abuts against the inner wall of the rectangular hole in the wall, limiting the door frame along its width direction. The strip clamping plates 22 on both sides of the door frame assembly 10 are moved in the opposite direction so that the strip clamping plates 22 and the strip fixing plates 21 are located on both sides of the wall. The locking rod 24 is operated to drive the strip clamping plates 22 and the strip fixing plates 21 to be tightly connected to the wall, so that the door frame assembly 10 is tightly connected to the wall, which enhances the overall structural strength of the door frame. That is, the impact force on the door frame can be quickly transferred to the wall for distribution, improving the use effect of the air-raid shelter door.

[0041] The above description is merely an embodiment of this utility model and does not limit the patent scope of this utility model. Any equivalent structural or procedural transformations made using the content of this utility model specification, or direct or indirect applications in other related technical fields, are similarly included within the patent protection scope of this utility model.

Claims

1. A high-strength door frame for a civil defense door, characterized in that, include: The door frame assembly (10) and the clamping connection assembly (20) connected to both sides of the door frame assembly (10) include a strip fixing plate (21) and a strip clamping plate (22), as well as a sliding member (23) and a locking rod (24). The strip fixing plate (21) is connected to the back of the door frame assembly (10), and the strip clamping plate (22) is connected to the front of the door frame assembly (10) through the sliding member (23). A vertical plate (3) fixed to the side of the door frame assembly (10) is connected between the strip fixing plate (21) and the strip clamping plate (22). A number of connecting rods (40) are spaced through the top of the door frame assembly (10).

2. The high-strength door frame of the air-raid shelter according to claim 1, characterized in that, The sliding member (23) includes waist-shaped holes (231) spaced apart on the strip clamping plate (22), and bolts (232) are respectively inserted into the waist-shaped holes (231), with the ends of the bolts (232) spirally inserted into the door frame assembly (10).

3. The high-strength door frame of the air-raid shelter according to claim 1, characterized in that, The side of the strip clamping plate (22) is provided with a number of opening slots (5) at intervals. The vertical plate (3) is provided with a number of clearance slots (6) that are equal to and correspond to the number of opening slots (5). The locking rod (24) includes a screw (241) that passes through the opening slots (5) and clearance slots (6) respectively. One end of the screw (241) is connected to the strip fixing plate (21), and the other end is screwed with a locking nut (242).

4. The high-strength door frame of the air-raid shelter according to claim 1, characterized in that, The door frame assembly (10) includes four channel steels (11) welded end to end and four L-shaped plates (12). The L-shaped plates (12) are welded to the openings of the channel steels (11), and the corners of the L-shaped plates (12) correspond to the connection points of the adjacent channel steels (11).

5. The high-strength door frame of the air-raid shelter according to claim 4, characterized in that, The inner cavity of the adjacent channel steel (11) is welded with an L-shaped reinforcing rib (7), and the L-shaped plate (12) is provided with an L-shaped hole (8). The L-shaped hole (8) is provided with a corresponding L-shaped reinforcing rib (7), and the L-shaped reinforcing rib (7) is welded and fixed to the L-shaped plate (12).

6. The high-strength door frame of the air-raid shelter according to claim 1, characterized in that, The top inner wall of the door frame assembly (10) is provided with rectangular holes (9) equal in number to the connecting rods (40). The connecting rods (40) pass through the rectangular holes (9) and are installed on the door frame assembly (10). One end of the connecting rod (40) extends into the wall and is fixedly connected to it. The connecting rod (40) includes an expansion bolt (41) and a locking nut (42).

7. The high-strength door frame of the air-raid shelter according to claim 6, characterized in that, The outer side of the strip clamping plate (22) is connected to a strip reinforcing plate (31), and a sealing plate (32) is detachably connected inside the rectangular hole (9).

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