Nickel-saving stainless steel civil air defense door sealing device

Abstract

The utility model provides a nickel-saving type stainless steel civil air defense door sealing device which comprises a door frame, a civil air defense door body, a plurality of sealing plates and a linkage mechanism, the door frame is fixedly arranged on a wall, a sealing groove is formed in the inner side of the door frame, the civil air defense door body is arranged on the door frame in an openable and closable mode, and a hand wheel used for opening a civil air defense door is arranged on the civil air defense door body. The multiple sealing plates are arranged on the civil air defense door body in a sliding mode, the sealing plates can be partially arranged in the sealing grooves due to sliding and block the inner side of a gap between the door frame and the civil air defense door body, and the linkage mechanism is connected between the hand wheel and the sealing plates so that the hand wheel can drive the sealing plates to slide when rotating. According to the civil air defense door, the sealing groove and the sealing plate are arranged, when the civil air defense door body is closed, the part of the sealing plate is inserted into the sealing groove so that a gap between the civil air defense door and the door frame can be blocked, the sealing effect is achieved, and compared with a rubber sealing ring, the sealing plate is not prone to damage, and the service life is longer.

Description

Technical Field

[0001] This utility model belongs to the field of civil defense door technology, and more specifically, it relates to a nickel-saving stainless steel civil defense door sealing device. Background Technology

[0002] Civil defense doors are an important component of civil air defense projects, primarily used in wartime to protect personnel and equipment from shock waves, toxic agents, and radioactive fallout. The sealing performance of civil defense doors directly affects their protective effectiveness and is a key technical indicator in their design and manufacturing. However, existing civil defense doors generally improve sealing by installing sealing strips between the door body and the frame. But rubber is prone to aging, and the sealing performance declines over time, making it difficult to withstand significant shock wave pressure. Utility Model Content

[0003] The purpose of this utility model is to provide a nickel-saving stainless steel air defense door sealing device, which can improve the service life of the sealing device while satisfying the sealing performance between the air defense door body and the door frame.

[0004] To achieve the above objectives, the technical solution adopted by this utility model is as follows: A nickel-saving stainless steel air-raid shelter door sealing device is provided, comprising a door frame, an air-raid shelter door body, multiple sealing plates, and a linkage mechanism. The door frame is fixed to a wall, and a sealing groove is provided on the inner side of the door frame. The air-raid shelter door body is openable and closable on the door frame, and a handwheel for opening the air-raid shelter door is provided on the air-raid shelter door body. The multiple sealing plates are slidably disposed on the air-raid shelter door body, and the sealing plates can be partially disposed within the sealing groove due to sliding, sealing the inner side of the gap between the door frame and the air-raid shelter door body. The linkage mechanism is connected between the handwheel and the sealing plates, so that the sealing plates can be driven to slide when the handwheel rotates.

[0005] In one possible implementation, the door frame is provided with an annular fixing plate, the fixing plate having an L-shaped cross-section, and the fixing plate and the door frame forming a sealing groove.

[0006] In one possible implementation, the sealing plate includes two horizontally arranged first plates and two vertically arranged second plates. The air defense door body is provided with first sliding grooves near the top and bottom, and with second sliding grooves near the left and right ends. The first sliding grooves correspond one-to-one with the first plates, and the second sliding grooves correspond one-to-one with the second plates. The bottom of the first plate is provided with a first slider, which slides within the corresponding first sliding groove. The bottom of the second plate is provided with a second slider, which slides within the corresponding second sliding groove.

[0007] In one possible implementation, the first plate and the second plate can be completely disposed inside the body of the air-raid shelter door due to sliding. The length of the second plate is equal to the height of the air-raid shelter door body. The first plate includes a crossbar and baffles hinged to both ends of the crossbar. When the second plate is disposed inside the body of the air-raid shelter door, both ends of the crossbar abut against the second plate. When the first plate and the second plate seal the gap between the air-raid shelter door body and the door frame, the baffles abut against the second plate. When the crossbar slides, the baffles can be flipped and disposed on one side of the crossbar due to the obstruction of the second plate.

[0008] In one possible implementation, the crossbar is provided with torsion spring hinges at both ends, and the baffle is fixed on the torsion spring hinges. The baffle is fan-shaped. When the first plate and the second plate seal the gap between the blast door body and the door frame, the arc-shaped sidewall of the baffle abuts against the second plate.

[0009] In one possible implementation, the linkage mechanism includes a first linkage box, a second linkage box, a first linkage rod, multiple connecting pipes, and multiple threaded rods. The first linkage box is located at the center of the air-raid shelter door body and contains a first linkage component. The second linkage box is located on the air-raid shelter door body and is spaced apart from the first linkage box. The connecting rod of the handwheel passes through the second linkage box, which contains a second linkage component connected to the connecting rod of the handwheel. One end of the first linkage rod is connected to the first linkage component, and the other end is connected to the second linkage component. One end of the connecting pipe is connected to the corresponding sealing plate. Multiple threaded rods are rotatably mounted on the first linkage box, with one end screwed to the other end of the corresponding connecting pipe and the other end connected to the second linkage component, so that when the handwheel rotates, the threaded rods rotate with the handwheel.

[0010] In one possible implementation, the first linkage component includes a first rotating shaft rotatably disposed within the first linkage box and two first helical gears disposed on the first rotating shaft. The two first helical gears are arranged vertically at intervals. The top end of the threaded rod is provided with a second helical gear, which meshes with the same first helical gear.

[0011] In one possible implementation, the second linkage component includes a third helical gear disposed on the connecting rod of the handwheel, and the two ends of the first linkage rod are provided with fourth helical gears, one of which meshes with the third helical gear, and the other of which meshes with the first helical gear.

[0012] In one possible implementation, the body of the air-raid shelter door is provided with a guide groove, the connecting pipe is provided with a guide rod, the guide rod is inserted into the guide groove, the connecting pipe includes a first connecting pipe and a second connecting pipe, the first connecting pipe is connected to the crossbar, the second connecting pipe is connected to the second plate, the threaded rod includes a first screw and a second screw, the first screw is screwed into the first connecting pipe, the second screw is screwed into the second connecting pipe, the pitch of the first screw is greater than the pitch of the second screw; and the second connecting pipe is zigzag-shaped.

[0013] In one possible implementation, the door frame and the body of the air-raid shelter door are made of nickel-saving stainless steel.

[0014] The advantages of the nickel-saving stainless steel air-raid shelter door sealing device provided by this utility model are as follows: Compared with the prior art, this utility model sets a sealing groove and a sealing plate. When the air-raid shelter door body is closed, the sealing plate is partially inserted into the sealing groove to seal the gap between the air-raid shelter door and the door frame, thereby achieving a sealing effect. Moreover, compared with rubber sealing rings, the sealing plate is less prone to damage and has a longer service life. Attached Figure Description

[0015] To more clearly illustrate the technical solutions in the embodiments of this utility model, the drawings used in the description of the embodiments or the prior art 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.

[0016] Figure 1 A schematic diagram of the structure of the nickel-saving stainless steel air defense door sealing device provided in this embodiment of the utility model;

[0017] Figure 2 A schematic diagram of the working structure of the nickel-saving stainless steel air defense door sealing device provided in this embodiment of the utility model;

[0018] Figure 3 for Figure 2 Enlarged view of part A;

[0019] Figure 4 A schematic diagram of the structure of the nickel-saving stainless steel air defense door sealing device provided in this embodiment of the present invention when retracted;

[0020] Figure 5 A schematic diagram of the sealing groove provided in an embodiment of this utility model;

[0021] Figure 6 A schematic diagram of the door frame provided in an embodiment of this utility model;

[0022] Figure 7 A schematic diagram of the structure of the first linkage component provided in an embodiment of this utility model.

[0023] The labels for the attached figures are as follows:

[0024] 1. Door frame; 2. Air defense door body; 3. Sealing plate; 4. Linkage mechanism;

[0025] 101. Sealing groove; 102. Fixing plate;

[0026] 201. Handwheel; 202. Connecting rod; 203. Guide groove;

[0027] 301. First plate; 302. Second plate; 303. First slide rail; 304. Second slide rail; 305. Torsion spring hinge; 306. Crossbar; 307. Baffle;

[0028] 401. First linkage box; 402. Second linkage box; 403. First linkage rod; 404. Connecting pipe; 405. Threaded rod; 406. First linkage assembly; 407. First rotating shaft; 408. First helical gear; 409. Second helical gear; 410. Third helical gear; 411. Fourth helical gear; 412. Guide rod; 413. First connecting pipe; 414. Second connecting pipe; 415. First screw; 416. Second screw. Detailed Implementation

[0029] To make the technical problem to be solved, the technical solution, and the beneficial effects of this utility model clearer, the present utility model will be further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain this utility model and are not intended to limit this utility model.

[0030] It should be further noted that the accompanying drawings and embodiments of this utility model mainly describe the concept of this utility model. Based on this concept, some specific forms and settings of connection relationships, positional relationships, power mechanisms, power supply systems, hydraulic systems and control systems may not be fully described. However, under the premise that those skilled in the art understand the concept of this utility model, they can implement the above-mentioned specific forms and settings in a well-known manner.

[0031] When a component is referred to as being "fixed to" or "set on" another component, it can be directly on or indirectly on that other component. When a component is referred to as being "connected to" another component, it can be directly connected to or indirectly connected to that other component.

[0032] The terms “length”, “width”, “up”, “down”, “front”, “back”, “left”, “right”, “vertical”, “horizontal”, “top”, “bottom”, “inner”, and “outer” indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model.

[0033] The terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Therefore, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of this utility model, "multiple" means two or more, and "several" means one or more, unless otherwise explicitly specified.

[0034] The present invention will now describe the nickel-saving stainless steel air defense door sealing device.

[0035] Please refer to the following: Figures 1 to 7 The nickel-saving stainless steel air-raid shelter door sealing device includes a door frame 1, an air-raid shelter door body 2, multiple sealing plates 3, and a linkage mechanism 4. The door frame 1 is fixed to the wall, and a sealing groove 101 is provided on the inner side of the door frame 1. The air-raid shelter door body 2 is openable and closable on the door frame 1. The air-raid shelter door body 2 is provided with a handwheel 201 for opening the air-raid shelter door. The multiple sealing plates 3 are slidably disposed on the air-raid shelter door body 2. The sealing plates 3 can be partially disposed in the sealing groove 101 due to sliding, and will seal the inner side of the gap between the door frame 1 and the air-raid shelter door body 2. The linkage mechanism 4 is connected between the handwheel 201 and the sealing plates 3 so that the sealing plates 3 can be driven to slide when the handwheel 201 is rotated.

[0036] The beneficial effects of the nickel-saving stainless steel air-raid shelter door sealing device provided in this embodiment are as follows: Compared with the prior art, the nickel-saving stainless steel air-raid shelter door sealing device provided in this embodiment, by setting a sealing groove 101 and a sealing plate 3, when the air-raid shelter door body 2 is closed, the sealing plate 3 is partially inserted into the sealing groove 101 to seal the gap between the air-raid shelter door and the door frame 1, thereby achieving a sealing effect. Moreover, compared with the rubber sealing ring, the sealing plate 3 is less prone to damage and has a longer service life.

[0037] like Figure 5 and Figure 6As shown, a ring-shaped fixing plate 102 is provided on the door frame 1. The cross-section of the fixing plate 102 is L-shaped. The fixing plate 102 and the door frame 1 form a sealing groove 101. The setting of the fixing plate 102 facilitates the formation of the sealing groove 101. When the sealing plate 3 is inserted into the sealing groove 101, the contact area between the sealing plate 3 and the door frame 1 can be increased, which is beneficial to improving the sealing performance of the stainless steel air defense door sealing device of this utility model.

[0038] Combination Figure 2 , Figure 3 and Figure 4 As shown, the sealing plate 3 includes two horizontally arranged first plates 301 and two vertically arranged second plates 302. The air-raid shelter door body 2 has first sliding grooves 303 near the top and bottom, and second sliding grooves 304 near the left and right ends. The first sliding grooves 303 correspond one-to-one with the first plates 301, and the second sliding grooves 304 correspond one-to-one with the second plates 302. The bottom of each first plate 301 has a first slider that slides within its corresponding first sliding groove 303. Similarly, the bottom of each second plate 302 has a second slider that slides within its corresponding second sliding groove 304. The first sliding grooves 303 and first sliders guide the sliding of the first plates 301, and the second sliding grooves 304 and second sliders guide the sliding of the second plates 302.

[0039] In this embodiment, the first plate 301 and the second plate 302 can be completely disposed inside the body 2 of the air-raid shelter door due to sliding. The length of the second plate 302 is equal to the height of the body 2 of the air-raid shelter door. The first plate 301 includes a crossbar 306 and baffles 307 hinged to both ends of the crossbar 306. When the second plate 302 is disposed inside the body 2 of the air-raid shelter door, the two ends of the crossbar 306 abut against the second plate 302. When the first plate 301 and the second plate 302 seal the gap between the body 2 of the air-raid shelter door and the door frame 1, the baffles 307 abut against the second plate 302. When the crossbar 306 slides, the baffles 307 can be flipped and disposed on one side of the crossbar 306 due to the obstruction of the second plate 302. The arrangement of the crossbar and the baffles 307 facilitates the complete retraction of the first plate 301 and the second plate 302 inside the body 2 of the air-raid shelter door, preventing the body 2 of the air-raid shelter door from being unable to open due to interference between the first plate 301 and the second plate 302.

[0040] In addition, torsion spring hinges 305 are provided at both ends of the crossbar 306, and baffles 307 are fixed on the torsion spring hinges 305. The baffles 307 are fan-shaped. When the first plate 301 and the second plate 302 seal the gap between the air-raid shelter door body 2 and the door frame 1, the arc-shaped sidewall of the baffles 307 abuts against the second plate 302. This allows the baffles 307 to automatically reset and block the gap between the air-raid shelter door body 2 and the door frame 1 during the upward movement of the second plate.

[0041] like Figure 1 and Figure 7 As shown, the linkage mechanism 4 includes a first linkage box 401, a second linkage box 402, a first linkage rod 403, multiple connecting pipes 404, and multiple threaded rods 405. The first linkage box 401 is located at the center of the air-raid shelter door body 2 and contains a first linkage component 406. The second linkage box 402 is located on the air-raid shelter door body 2 and is spaced apart from the first linkage box 401. The connecting rod 202 of the handwheel 201 passes through the second linkage box 402, which contains a second linkage component. The second linkage assembly is connected to the connecting rod 202 of the handwheel 201. One end of the first linkage rod 403 is connected to the first linkage assembly 406, and the other end of the first linkage rod 403 is connected to the second linkage assembly. One end of the connecting pipe 404 is connected to the corresponding sealing plate 3. Multiple threaded rods 405 are rotatably mounted on the first linkage box 401. One end of the threaded rod 405 is screwed to the other end of the corresponding connecting pipe 404, and the other end of the threaded rod 405 is connected to the second linkage assembly, so that when the handwheel 201 rotates, the threaded rod 405 rotates with the handwheel 201. When the handwheel 201 rotates, it drives the first linkage rod 403 to rotate, which in turn drives the first linkage assembly 406 to rotate, thereby driving the threaded rod 405 to rotate, realizing the insertion or extraction of the screw into the connecting pipe 404, and thus driving the sealing plate 3 to slide.

[0042] Specifically, the first linkage assembly 406 includes a first rotating shaft 407 rotatably disposed in the first linkage box 401 and two first helical gears 408 disposed on the first rotating shaft 407. The two first helical gears 408 are arranged vertically at intervals. The top end of the threaded rod 405 is provided with a second helical gear 409, which meshes with the same first helical gear 408.

[0043] The second linkage assembly includes a third helical gear 410, which is mounted on the connecting rod 202 of the handwheel 201. The first linkage rod 403 has fourth helical gears 411 at both ends; one fourth helical gear 411 meshes with the third helical gear 410, and the other fourth helical gear 411 meshes with the first helical gear 408. When the handwheel 201 rotates, it drives the connecting rod 202 to rotate, which in turn drives the third helical gear 410 to rotate. The third helical gear 410 then drives the fourth helical gear 411 to rotate, which in turn drives the first helical gear 408 to rotate. The first helical gear 408 then drives the second helical gear 409 to rotate, thereby achieving the rotation of the threaded rod 405.

[0044] In this embodiment, the air-raid shelter door body 2 is provided with a guide groove 203, and the connecting pipe 404 is provided with a guide rod 412. The guide rod 412 is inserted into the guide groove 203. The connecting pipe 404 includes a first connecting pipe 413 and a second connecting pipe 414. The first connecting pipe 413 is connected to the crossbar, and the second connecting pipe 414 is connected to the second plate 302. The threaded rod 405 includes a first screw 415 and a second screw 416. The first screw 415 is screwed into the first connecting pipe 413, and the second screw 416 is screwed into the second connecting pipe 414. The pitch of the first screw 415 is greater than the pitch of the second screw 416, and the second connecting pipe 414 is zigzag-shaped. The difference in the pitch of the first connecting pipe 413 and the second connecting pipe 414 makes the sliding speed of the crossbar 306 greater than the sliding speed of the second plate 302 when the handwheel 201 is rotated, thereby facilitating the flipping and resetting of the baffle 307. Meanwhile, the second connecting pipe 414 is arranged in a zigzag shape, which makes it easier to avoid the second linkage box 402.

[0045] Finally, the door frame 1 and the body of the air-raid shelter door 2 are made of nickel-saving stainless steel, which can reduce the thickness and weight of the air-raid shelter door without reducing its protective capabilities, making it easier to use.

[0046] The above are merely preferred embodiments of the present utility model and are not intended to limit the present utility model. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. A nickel-saving stainless steel air-raid shelter door sealing device, characterized in that, include: The door frame (1) is fixedly installed on the wall, and the inner side of the door frame (1) is provided with a sealing groove (101). The air defense door body (2) is openable and closable on the door frame (1), and the air defense door body (2) is provided with a handwheel (201) for opening the air defense door. Multiple sealing plates (3) are slidably disposed on the body of the air defense door (2). The sealing plates (3) can be partially disposed in the sealing groove (101) due to sliding, and will seal the inside of the gap between the door frame (1) and the body of the air defense door (2). A linkage mechanism (4) is connected between the handwheel (201) and the sealing plate (3) so that the sealing plate (3) can be driven to slide when the handwheel (201) rotates.

2. The nickel-saving stainless steel air-raid shelter door sealing device as described in claim 1, characterized in that: The door frame (1) is provided with an annular fixing plate (102), the cross section of the fixing plate (102) is L-shaped, and the fixing plate (102) and the door frame (1) form a sealing groove (101).

3. The nickel-saving stainless steel air-raid shelter door sealing device as described in claim 2, characterized in that: The sealing plate (3) includes two horizontally arranged first plates (301) and two vertically arranged second plates (302). The body of the air defense door (2) is provided with a first sliding groove (303) near the top and near the bottom. The body of the air defense door (2) is provided with a second sliding groove (304) near the left and near the right ends. The first sliding groove (303) corresponds to the first plate (301) one by one, and the second sliding groove (304) corresponds to the second plate (302) one by one. The bottom of the first plate (301) is provided with a first slider, which slides in the corresponding first sliding groove (303). The bottom of the second plate (302) is provided with a second slider, which slides in the corresponding second sliding groove (304).

4. The nickel-saving stainless steel air-raid shelter door sealing device as described in claim 3, characterized in that: The first plate (301) and the second plate (302) can be completely disposed inside the body of the air defense door (2) due to sliding. The length of the second plate (302) is equal to the height of the body of the air defense door (2). The first plate (301) includes a crossbar (306) and baffles (307) hinged to both ends of the crossbar (306). When the second plate (302) is disposed inside the body of the air defense door (2), the two ends of the crossbar (306) abut against the second plate (302). When the first plate (301) and the second plate (302) seal the gap between the body of the air defense door (2) and the door frame (1), the baffles (307) abut against the second plate (302). When the crossbar (306) slides, the baffles (307) can be flipped and disposed on one side of the crossbar (306) due to the obstruction of the second plate (302).

5. The nickel-saving stainless steel air-raid shelter door sealing device as described in claim 4, characterized in that: The crossbar (306) has torsion spring hinges (305) at both ends. The baffle (307) is fixed on the torsion spring hinges (305). The baffle (307) is fan-shaped. When the first plate (301) and the second plate (302) seal the gap between the body of the air defense door (2) and the door frame (1), the arc-shaped side wall of the baffle (307) abuts against the second plate (302).

6. The nickel-saving stainless steel air-raid shelter door sealing device as described in claim 5, characterized in that, The linkage mechanism (4) includes: The first linkage box (401) is located at the center of the body of the air defense door (2), and the first linkage box (401) is provided with a first linkage component (406). The second linkage box (402) is located on the body of the air defense door (2), and the second linkage box (402) is arranged at a distance from the first linkage box (401). The connecting rod (202) of the handwheel (201) passes through the second linkage box (402). The second linkage box (402) is provided with a second linkage component, and the second linkage component is connected to the connecting rod (202) of the handwheel (201). The first linkage rod (403) has one end connected to the first linkage component (406), and the other end connected to the second linkage component; Multiple connecting pipes (404), one end of which is connected to the corresponding sealing plate (3); Multiple threaded rods (405) are rotatably mounted on the first linkage box (401). One end of each threaded rod (405) is screwed to the other end of the corresponding connecting pipe (404), and the other end of each threaded rod (405) is connected to the second linkage assembly, so that when the handwheel (201) is rotated, the threaded rod (405) rotates with the handwheel (201).

7. The nickel-saving stainless steel air-raid shelter door sealing device as described in claim 6, characterized in that: The first linkage assembly (406) includes a first rotating shaft (407) rotatably disposed in the first linkage box (401) and two first helical gears (408) disposed on the first rotating shaft (407). The two first helical gears (408) are arranged vertically at intervals. The top end of the threaded rod (405) is provided with a second helical gear (409), which meshes with the same first helical gear (408).

8. The nickel-saving stainless steel air-raid shelter door sealing device as described in claim 7, characterized in that: The second linkage component includes a third helical gear (410), which is mounted on the connecting rod (202) of the handwheel (201). The first linkage rod (403) has a fourth helical gear (411) at both ends. One of the fourth helical gears (411) meshes with the third helical gear (410), and the other of the fourth helical gears (411) meshes with the first helical gear (408).

9. The nickel-saving stainless steel air-raid shelter door sealing device as described in claim 8, characterized in that: The body (2) of the air defense door is provided with a guide groove (203), and the connecting pipe (404) is provided with a guide rod (412). The guide rod (412) is inserted into the guide groove (203). The connecting pipe (404) includes a first connecting pipe (413) and a second connecting pipe (414). The first connecting pipe (413) is connected to the crossbar, and the second connecting pipe (414) is connected to the second plate (302). The threaded rod (405) includes a first screw (415) and a second screw (416). The first screw (415) is screwed into the first connecting pipe (413), and the second screw (416) is screwed into the second connecting pipe (414). The pitch of the first screw (415) is greater than the pitch of the second screw (416). The second connecting pipe (414) is zigzag-shaped.

10. The nickel-saving stainless steel air-raid shelter door sealing device as described in claim 9, characterized in that: The door frame (1) and the body of the air defense door (2) are made of nickel-saving stainless steel.

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