An anti-impact civil defense door

Abstract

The utility model discloses an anti -impact civil air defence door relates to civil air defence door field, including anti -impact door body, the inner door frame of being sleeved in the inside of anti -impact door body, a plurality of buffer filling blocks are installed between the anti -impact door body and the inner door frame and are nested, the both sides of inner door frame all are installed with a plurality of reinforcing bar spare and arrange, the inside of reinforcing bar spare is equipped with buffer module. The multiple reinforcing bar spare of setting cooperation multiple buffer filling blocks can preliminarily promote the anti -impact performance of anti -impact door body and inner door frame in the use process while fully guaranteeing the connecting strength of anti -impact door body and inner door frame, and the multiple buffer modules of setting are the damping buffer energy dissipation condition formed on the basis of the structure of respective corresponding reinforcing bar spare, further promote the anti -impact performance of overall device, and buffer module and corresponding reinforcing bar spare of itself still have the use condition of convenient replacement between.

Description

Technical Field

[0001] This utility model relates to the field of civil defense doors, and in particular to an impact-resistant civil defense door. Background Technology

[0002] Civil defense doors are the doors at the entrances and exits of civil defense projects. Civil defense doors are clearly classified, including ordinary single and double-leaf protective airtight doors and airtight doors, as well as single and double-leaf protective airtight doors and airtight doors with movable thresholds, etc., which can meet different usage needs in the real environment.

[0003] As a key piece of equipment in protective engineering, the performance of air-raid shelter doors directly affects the safety of personnel and facilities. With the increasing power of modern weapons and the growing threat of extreme environments, traditional air-raid shelter doors face severe challenges in terms of impact resistance, blast resistance, and sealing. Currently, most mainstream air-raid shelter doors on the market adopt steel structure welding technology, which increases strength by increasing the thickness of steel plates. While this has some effect, it leads to excessive weight and difficulty in opening and closing. Furthermore, the buffer structure installed inside the current air-raid shelter doors experiences increasing structural fatigue during long-term use, and there is a lack of convenient replacement and maintenance conditions, which makes it difficult to maintain the high-strength impact resistance of the entire device for a long time. Utility Model Content

[0004] This application proposes an impact-resistant air defense door, which solves the technical problems mentioned in the background art.

[0005] To achieve the above objectives, this application adopts the following technical solution: an impact-resistant air defense door, comprising an impact-resistant door body and an inner door frame fitted inside the impact-resistant door body, wherein a plurality of buffer filling blocks are nested between the impact-resistant door body and the inner door frame, and a plurality of reinforcing rods are arranged and installed on both sides of the inner door frame, wherein a buffer module is fitted inside the reinforcing rod, and an annular groove and an external thread structure are provided at one end of the reinforcing rod, wherein the buffer module includes a buffer spring, and a damping ring and a T-shaped internal thread cylinder are respectively fixed at both ends of the buffer spring, and the inner side of the T-shaped internal thread cylinder is threadedly connected to the external thread structure.

[0006] Preferably, the impact-resistant door body is composed of two impact-resistant door panels that are spliced ​​together front and back, and the splicing joint of the two impact-resistant door panels is fixedly installed by screws.

[0007] Preferably, the surface of the buffer filling block is installed and fixed to the inner wall of the impact-resistant door panel by adhesive, and the buffer filling block includes sound-absorbing cotton material.

[0008] Preferably, the inner door frame has several semi-open assembly slots arranged on both sides, and several positioning holes are provided on the inner walls of both sides of the middle part of the inner door frame. The reinforcing rod includes a square reinforcing rod and a transition rod. The transition rod is fixed to the middle of one end of the square reinforcing rod, and the combination formed by the transition rod and one end of the square reinforcing rod can pass through the semi-open assembly slot and then engage with the corresponding positioning hole.

[0009] Preferably, the open slot of the semi-open assembly groove is provided with a semi-open limiting groove and a screw hole that communicate with its own space. The other end of the square reinforcing rod is fixed with a flange that can be snapped into the semi-open limiting groove, and the flange is installed and fixed by screws and screw holes.

[0010] Preferably, the annular groove and the external thread structure are respectively formed inside the other end of the square reinforcing rod and on the corresponding inner wall structure, and the end face of the other end of the square reinforcing rod is coplanar with the side surface of the reinforcing rod.

[0011] Preferably, one end of the T-shaped internal threaded cylinder has an internal hexagonal groove, and the surface of the other end of the T-shaped internal threaded cylinder is coplanar with the corresponding side surface of the impact-resistant door body.

[0012] In summary, this utility model has the following beneficial effects: 1. When multiple reinforcing rods, multiple buffer modules, and multiple impact-resistant door bodies, inner door frames, and multiple buffer filling blocks are combined, the multiple reinforcing rods and multiple buffer filling blocks can not only fully ensure the connection strength between the impact-resistant door body and the inner door frame, but also initially improve the impact resistance of the impact-resistant door body and the inner door frame during use. The multiple buffer modules form damping buffer energy dissipation conditions on the basis of their respective reinforcing rod structures, further improving the impact resistance of the overall device. At the same time, the buffer modules and their corresponding reinforcing rods can be easily replaced, thereby ensuring that the overall device has a continuous high-strength buffering effect.

[0013] 2. The combination of the reinforcing rod and the buffer module can be easily filled between the impact-resistant door body and the inner door frame and installed and fixed after being combined with the matching semi-open assembly groove, semi-open limiting groove and other clearance structures. In subsequent use, it can also meet the needs of rapid maintenance and reduce the cost of use. Attached Figure Description

[0014] Figure 1 This is a three-dimensional schematic diagram of the structure of this utility model; Figure 2 This is a front view schematic diagram of the structure of this utility model; Figure 3 This is a front view schematic diagram of the buffer filling block in the structure of this utility model; Figure 4 This is a three-dimensional schematic diagram of the inner door frame in the structure of this utility model; Figure 5 This is the structure of the utility model Figure 1 Enlarged view of point A in the middle; Figure 6 This is a cross-sectional schematic diagram of the reinforcing member in the structure of this utility model; Figure 7 In the structure of this utility model Figure 6 Enlarged diagram of point B in the middle.

[0015] Explanation of reference numerals in the attached figures: 1. Impact-resistant door body; 2. Inner door frame; 3. Buffer filling block; 4. Reinforcing rod; 41. Square reinforcing rod; 42. Transition rod; 5. Buffer module; 51. Buffer spring; 52. Damping ring; 53. T-shaped internal threaded cylinder; 54. Internal hexagonal groove. Detailed Implementation

[0016] like Figures 1-4 An impact-resistant air defense door includes an impact-resistant door body 1 and an inner door frame 2 fitted inside the impact-resistant door body 1. Several buffer filling blocks 3 are nested between the impact-resistant door body 1 and the inner door frame 2. Several reinforcing rods 4 are arranged and installed on both sides of the inner door frame 2. A buffer module 5 is fitted inside the reinforcing rod 4. An annular groove and an external thread structure are provided at one end of the reinforcing rod 4. The buffer module 5 includes a buffer spring 51. A damping ring 52 and a T-shaped internal thread cylinder 53 are fixed at both ends of the buffer spring 51 respectively. The inner side of the T-shaped internal thread cylinder 53 is threadedly connected to the external thread structure. The impact-resistant door body 1 consists of two impact-resistant door panels that are spliced ​​together front and back, and the splicing points of the two impact-resistant door panels are fixed by screws. This reduces the assembly difficulty of the impact-resistant door body 1 and the inner door frame 2 while ensuring its own structural strength. The surface of the buffer filling block 3 is installed and fixed to the inner wall of the impact-resistant door panel by adhesive, which is convenient and simple to install. The buffer filling block 3 includes sound-absorbing cotton material to reduce the noise caused by external pressure impacting the structure of the impact-resistant door body 1 and the inner door frame 2, etc., forming the air-raid shelter door.

[0017] When in use, the impact-resistant door formed by the combination of the impact-resistant door body 1, inner door frame 2, multiple buffer filling blocks 3, multiple reinforcing rods 4 and multiple buffer modules 5 will be damped and buffered by the buffer springs 51 inside the multiple buffer modules 5 and their respective damping rings 52 during use, which will fully improve the impact resistance of the impact-resistant door. After multiple buffer modules 5 have been used for a certain period of time, considering the structural fatigue of the buffer spring 51 during continuous buffering, the buffer modules 5 can be disassembled and replaced. The specific operation is as follows: Engage one end of the wrench into the internal hexagonal slot 54, then turn the handle to cause the T-shaped internal threaded cylinder 53 to spirally separate within the annular groove until it separates completely. Simultaneously, the damping ring 52 and the buffer spring 51 will also move out of the annular groove along with the T-shaped internal threaded cylinder 53. After completion, reassemble the new damping ring 52, buffer spring 51, and T-shaped internal threaded cylinder 53 into the annular groove, with the inner side of the T-shaped internal threaded cylinder 53 engaging with the external thread within the annular groove. This achieves the convenient and quick replacement of the buffer module 5, ensuring the overall device maintains continuous and high-strength impact resistance.

[0018] like Figures 1-7 The inner door frame 2 has several semi-open assembly slots arranged on both sides, and several positioning holes are opened on the inner walls of both sides of the middle part of the inner door frame 2. The reinforcing rod 4 includes a square reinforcing rod 41 and a transition rod 42. The transition rod 42 is fixed to the middle of one end of the square reinforcing rod 41, and the combination formed by the transition rod 42 and one end of the square reinforcing rod 41 can pass through the semi-open assembly slots and then be engaged with the corresponding positioning holes. The open slot of the semi-open assembly slot is provided with a semi-open limiting slot and screw hole that communicate with its own space. The other end of the square reinforcing rod 41 is fixed with a flange that can be snapped into the semi-open limiting slot. The flange is installed and fixed by screws and screw holes, which ensures the connection strength while maintaining the conditions for easy replacement. The annular groove and the external thread structure are respectively opened in the other end of the square reinforcing rod 41 and on the corresponding inner wall structure. The end face of the other end of the square reinforcing rod 41 is coplanar with the side surface of the reinforcing rod 4 to avoid structural interference. One end of the T-shaped internal thread cylinder 53 is provided with an internal hexagonal groove 54, and the surface of the other end of the T-shaped internal thread cylinder 53 is coplanar with the corresponding side surface of the impact-resistant door body 1 to avoid structural interference.

[0019] When in use, considering that the impact-resistant air-raid shelter door needs to be repaired after being impacted, the damaged reinforcing rod 4 and buffer module 5 can be pulled out from inside the impact-resistant door body 1 and inner door frame 2 according to the actual deformation location. The specific operation is as follows: First, the deformed positions of the impact-resistant door body 1 and the reinforcing rod 4 are traction-reset or hammer-reset. Then, the screws between the square reinforcing rod 41 and the impact-resistant door body 1 are turned off and disassembled. After that, the structure at the connection gap between the buffer module 5 and the reinforcing rod 4 is clamped with existing pliers, and the reinforcing rod 4 and the buffer module 5 are forcibly pulled out of the impact-resistant door body 1 and the inner door frame 2. After that, the new assembly of the reinforcing rod 4 and the buffer module 5 is filled into the space between the impact-resistant door body 1 and the inner door frame 2 through the semi-open assembly slot and reinstalled. In this way, the impact-resistant function of the impact-resistant air defense door is restored while achieving rapid maintenance and reducing the cost of use.

Claims

1. An impact-resistant air defense door, comprising an impact-resistant door body (1) and an inner door frame (2) fitted inside the impact-resistant door body (1), characterized in that: Several buffer filling blocks (3) are nested between the impact-resistant door body (1) and the inner door frame (2). Several reinforcing rods (4) are arranged and installed on both sides of the inner door frame (2). A buffer module (5) is installed inside the reinforcing rod (4). An annular groove and an external thread structure are provided at one end of the reinforcing rod (4). The buffer module (5) includes a buffer spring (51). A damping ring (52) and a T-shaped internal thread cylinder (53) are fixed at both ends of the buffer spring (51). The inner side of the T-shaped internal thread cylinder (53) is threadedly connected to the external thread structure.

2. The impact-resistant air-raid shelter door according to claim 1, characterized in that: The impact-resistant door body (1) is composed of two impact-resistant door panels that are spliced ​​together front and back, and the splicing points of the two impact-resistant door panels are fixed and installed by screws.

3. The impact-resistant air-raid shelter door according to claim 2, characterized in that: The surface of the buffer filling block (3) is installed and fixed to the inner wall of the impact-resistant door panel by adhesive, and the buffer filling block (3) includes sound-absorbing cotton material.

4. The impact-resistant air-raid shelter door according to claim 1, characterized in that: The inner door frame (2) has several semi-open assembly slots arranged on both sides, and several positioning holes are opened on the inner walls of both sides of the middle part of the inner door frame (2). The reinforcing rod (4) includes a square reinforcing rod (41) and a transition rod (42). The transition rod (42) is fixed at the middle of one end of the square reinforcing rod (41), and the combination formed by the transition rod (42) and one end of the square reinforcing rod (41) can pass through the semi-open assembly slot and then be engaged with the corresponding positioning hole.

5. The impact-resistant air-raid shelter door according to claim 4, characterized in that: The semi-open assembly slot has a semi-open limiting slot and a screw hole that communicate with its own space at the open slot opening. The other end of the square reinforcing rod (41) is fixed with a flange that can be snapped into the semi-open limiting slot, and the flange is installed and fixed by screws and screw holes.

6. The impact-resistant air-raid shelter door according to claim 4, characterized in that: The annular groove and the external thread structure are respectively opened in the other end of the square reinforcing rod (41) and the corresponding inner wall structure, and the end face of the other end of the square reinforcing rod (41) is coplanar with the side surface of the reinforcing rod (4).

7. The impact-resistant air-raid shelter door according to claim 1, characterized in that: One end of the T-shaped internal threaded cylinder (53) is provided with an internal hexagonal groove (54), and the surface of the other end of the T-shaped internal threaded cylinder (53) is coplanar with the corresponding side surface of the impact-resistant door body (1).

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