Double-open type closed civil air defense door

Abstract

The utility model relates to the technical field of civil air defense doors, and discloses a double-open type closed civil air defense door which comprises a front end sealing mechanism, a rear end sealing mechanism and a fixing mechanism, the front end sealing mechanism is located in the fixing mechanism, the rear end sealing mechanism is located in a main body mechanism, the front end sealing mechanism comprises a front section sealing door, and the rear end sealing mechanism comprises a rear section sealing door. A first rotating rod is arranged in the front-section sealing door, one end of the first rotating rod is fixedly connected with a first rotating handle, the other end of the first rotating handle is fixedly connected with a first bearing, and the surface of the first bearing is in transmission connection with a first gear. The front end sealing door is arranged, a first rotating handle is rotated, a first gear synchronously drives a first transmission gear and a second transmission gear to rotate, and the first transmission gear and the second transmission gear drive a first gear rack and a second gear rack to move up and down; and after the gear rack I and the gear rack II are contracted into the front-section sealing door from the upper-layer connecting hole and the lower-end connecting hole, the front-section sealing door is opened, and people enter the civil air defense door.

Description

Technical Field

[0001] The utility model relates to the technical field of civil air defense doors, in particular to a double-opening airtight civil air defense door. Background Technique

[0002] Civil air defense doors, that is, the doors at the entrances and exits of civil air defense projects, are mainly used in civil air defense projects to play a role in isolating external threats, such as radiation protection, gas protection, explosion protection, etc. Civil air defense doors have multiple functions such as waterproofing, explosion protection, and air pollution resistance. Especially in the face of natural disasters such as war and earthquake, they can protect people's safety and play a crucial role. The structures of civil air defense doors are diverse, mainly including ordinary single- and double-leaf airtight blast doors and airtight doors, single- and double-leaf airtight blast doors and airtight doors with movable thresholds, rubber tube explosion-proof flap valves, pendulum explosion-proof (shielding) flap valves, drop-type double-leaf airtight blast doors and airtight doors, etc. These types of doors need to consider the structural stability and functional diversity during design and installation to adapt to different protection requirements and usage environments.

[0003] After the double-opening civil air defense door is opened and entered, the conventional internal locking device is easily damaged by external forces. Therefore, it is necessary to be able to completely lock the civil air defense door when people are inside to ensure that the door cannot be easily opened from the outside. Content of the Utility Model

[0004] To solve the above technical problems, the utility model provides a double-opening airtight civil air defense door, including a front-end sealing mechanism, a rear-end sealing mechanism, and a fixing mechanism. The front-end sealing mechanism is located inside the fixing mechanism, and the rear-end sealing mechanism is located inside the main body mechanism.

[0005] The front-end sealing mechanism includes a front-section sealing door. Inside the front-section sealing door, there is a rotating rod I. One end of the rotating rod I is fixedly connected to a rotating handle I. The other end of the rotating handle I is fixedly connected to a bearing I. The surface of the bearing I is drivingly connected to a gear I. The surface of the gear I is drivingly connected to a transmission gear I. The surface of the transmission gear I is drivingly connected to a gear rack I. The surface of the gear I is drivingly connected to a transmission gear II. The transmission gear II is drivingly connected to a gear rack II. An upper connecting hole is opened at the top of the front-section sealing door, a right-side connecting hole I is opened on the right side of the front-section sealing door, and a lower connecting hole is opened at the bottom of the front-section sealing door.

[0006] As a further improvement of the above solution, the rotating rod I is arranged at the central position inside the front-section sealing door. The rotating rod I penetrates through the front-section sealing door. The gear rack I moves up and down in the lower connecting hole, and the transmission gear II moves up and down in the upper connecting hole.

[0007] As a further improvement of the above solution, the rear sealing mechanism includes a rear sealing door. A second rotating rod is arranged inside the rear sealing door. One end of the second rotating rod is fixedly connected to a second rotating handle. The other end of the second rotating handle is fixedly connected to a second bearing. A second gear is drivingly connected to the surface of the second bearing. A third transmission gear is drivingly connected to the surface of the second gear. A third gear bar is drivingly connected to the surface of the third transmission gear. A fourth transmission gear is drivingly connected to the surface of the second gear. A fourth gear bar is drivingly connected to the surface of the fourth transmission gear. A left connection hole is formed on the left side of the rear sealing door, and a second right connection hole is formed on the right side of the rear sealing door.

[0008] As a further improvement of the above solution, the second rotating rod is arranged at the central position inside the rear sealing door. The second rotating rod penetrates through the rear sealing door. The third gear bar moves left and right inside the rear sealing door, and the fourth gear bar moves left and right inside the second right connection hole.

[0009] As a further improvement of the above solution, the fixing mechanism includes an installation outer frame. An upper fixing hole is formed in the upper side inside the installation outer frame. A lower fixing hole is formed in the lower side inside the installation outer frame. A right fixing hole is formed in the right side inside the installation outer frame. A hinge is fixedly connected to the surface of the installation outer frame.

[0010] As a further improvement of the above solution, the number of the hinges is four, and the four hinges are evenly distributed in two groups on both sides of the installation outer frame.

[0011] Compared with the prior art, the beneficial effects of the present utility model are as follows:

[0012] By providing a front sealing door in the present utility model, when the first rotating handle is rotated, the first gear synchronously drives the first transmission gear and the second transmission gear to rotate. The first transmission gear and the second transmission gear drive the first gear bar and the second gear bar to move up and down until the first gear bar and the second gear bar retract from the upper connection hole and the lower connection hole into the front sealing door. Subsequently, the front sealing door is opened, and personnel can enter the inside of the civil air defense door.

[0013] By providing a rear sealing door in the present utility model, when personnel enter the inside of the civil air defense door, the second rotating handle is rotated to engage the third gear bar and the fourth gear bar into the inside of the right fixing hole and the first right connection hole, so that the civil air defense door cannot be opened from the outside. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 is a front view schematic diagram of the whole of the present utility model;

[0015] Figure 2 is a top view structural schematic diagram of the whole of the present utility model;

[0016] Figure 3Schematic diagram of the internal structure of the front-end sealing door of the present utility model;

[0017] Figure 4 Schematic diagram of the internal structure of the rear-end sealing door of the present utility model;

[0018] Figure 5 Schematic diagram of the internal sectional structure of the installation outer frame of the present utility model.

[0019] In the figure: 1. Front-end sealing mechanism; 101. Front-section sealing door; 102. First rotating rod; 103. First rotating handle; 104. First bearing; 105. First gear; 106. First transmission gear; 107. First gear rack; 108. Second transmission gear; 109. Second gear rack; 110. Upper connecting hole; 111. Left connecting hole; 112. Lower connecting hole; 2. Rear-end sealing mechanism; 201. Rear-end sealing door; 202. Second rotating rod; 203. Second rotating handle; 204. Second bearing; 205. Second gear; 206. Second transmission gear; 207. Third gear rack; 208. Third transmission gear; 209. Fourth gear rack; 210. Left connecting hole; 211. Right connecting hole; 3. Fixing mechanism; 301. Installation outer frame; 302. Upper fixing hole; 303. Lower fixing hole; 304. Right fixing hole; 305. Hinge. Specific implementation manner

[0020] Next, in combination with the drawings and specific implementation manners, the present utility model will be further described. It should be noted that, on the premise of no conflict, any combination of the following-described embodiments or technical features can form a new embodiment.

[0021] Embodiment 1:

[0022] Please combine Figures 1-5 , The double-opening airtight civil air defense door of this embodiment includes a front-end sealing mechanism 1, a rear-end sealing mechanism 2, and a fixing mechanism 3. The front-end sealing mechanism is located inside the fixing mechanism, and the rear-end sealing mechanism is located inside the main mechanism.

[0023] The front-end sealing mechanism 1 includes a front-section sealing door 101. Inside the front-section sealing door 101, there is a first rotating rod 102. One end of the first rotating rod 102 is fixedly connected to a first rotating handle 103. The other end of the first rotating handle 103 is fixedly connected to a first bearing 104. The surface of the first bearing 104 is drivingly connected to a first gear 105. The surface of the first gear 105 is drivingly connected to a first transmission gear 106. The surface of the first transmission gear 106 is drivingly connected to a first gear bar 107. The surface of the first gear 105 is drivingly connected to a second transmission gear 108. The second transmission gear 108 is drivingly connected to a second gear bar 109. An upper connecting hole 110 is opened at the top of the front-section sealing door 101. A first right-side connecting hole 111 is opened on the right side of the front-section sealing door 101. A lower connecting hole 112 is opened at the bottom of the front-section sealing door 101.

[0024] The first rotating rod 102 is arranged at the central position inside the front-section sealing door 101. The first rotating rod 102 penetrates through the front-section sealing door 101. The first gear bar 107 moves up and down in the lower connecting hole 112. The second transmission gear 108 moves up and down in the upper connecting hole 110.

[0025] The rear-end sealing mechanism 2 includes a rear-section sealing door 201. Inside the rear-section sealing door 201, there is a second rotating rod 202. One end of the second rotating rod 202 is fixedly connected to a second rotating handle 203. The other end of the second rotating handle 203 is fixedly connected to a second bearing 204. The surface of the second bearing 204 is drivingly connected to a second gear 205. The surface of the second gear 205 is drivingly connected to a third transmission gear 206. The surface of the third transmission gear 206 is drivingly connected to a third gear bar 207. The surface of the second gear 205 is drivingly connected to a fourth transmission gear 208. The surface of the fourth transmission gear 208 is drivingly connected to a fourth gear bar 209. A left-side connecting hole 210 is opened on the left side of the rear-section sealing door 201. A second right-side connecting hole 211 is opened on the right side of the rear-section sealing door 201.

[0026] The second rotating rod 202 is arranged at the central position inside the rear-section sealing door 201. The second rotating rod 202 penetrates through the rear-section sealing door 201. The third gear bar 207 moves left and right inside the rear-section sealing door 201. The fourth gear bar 209 moves left and right inside the second right-side connecting hole 211.

[0027] The fixing mechanism 3 includes an installation outer frame 301. An upper fixing hole 302 is opened on the upper side inside the installation outer frame 301. A lower fixing hole 303 is opened on the lower side inside the installation outer frame 301. A right-side fixing hole 304 is opened on the right side inside the installation outer frame 301. A hinge 305 is fixedly connected to the surface of the installation outer frame 301.

[0028] The number of the hinges 305 is set to four, and the four hinges 305 are evenly distributed in two groups on both sides of the installation outer frame 301.

[0029] In the embodiment of the present application, the implementation principle of the double-opening airtight civil air defense door is as follows: First, the user rotates the rotating handle 103, and the first gear 105 synchronously drives the first transmission gear 106 and the second transmission gear 108 to rotate. The first transmission gear 106 and the second transmission gear 108 drive the first gear rack 107 and the second gear rack 109 to move up and down until the first gear rack 107 and the second gear rack 109 retract from the upper connecting hole 110 and the lower connecting hole 112 into the front section sealing door 101. Subsequently, the front section sealing door 101 is opened, and the user enters the interior of the civil air defense door. When the user enters the interior of the civil air defense door, rotate the rotating handle 203 to engage the third gear rack 207 and the fourth gear rack 209 into the interior of the right fixing hole 304 and the first right connecting hole 111, and the civil air defense door cannot be opened from the outside.

[0030] The above implementation manners are only the preferred implementation manners of the present invention, and cannot be used to limit the protection scope of the present invention. Any non-substantial changes and substitutions made by those skilled in the art based on the present invention belong to the protection scope required by the present invention.

Claims

1. Double-opening closed civil defense door, characterized by: It comprises a front end sealing mechanism (1), a rear end sealing mechanism (2), and a fixing mechanism (3), wherein the front end sealing mechanism is located inside the fixing mechanism, and the rear end sealing mechanism is located inside the main body mechanism; The front end sealing mechanism (1) comprises a front section sealing door (101), wherein a rotating rod (102) is arranged inside the front section sealing door (101), one end of the rotating rod (102) is fixedly connected to a rotating handle (103), the other end of the rotating handle (103) is fixedly connected to a bearing (104), the surface of the bearing (104) is transmission-connected to a gear (105), the surface of the gear (105) is transmission-connected to a transmission gear (106), and the transmission The surface of the movable gear 1 (106) is transmission-connected to a gear bar 1 (107); the surface of the gear 1 (105) is transmission-connected to a transmission gear 2 (108); the transmission gear 2 (108) is transmission-connected to a gear bar 2 (109); an upper connection hole (110) is provided at the top of the front section sealing door (101); a right side connection hole 1 (111) is provided at the right side of the front section sealing door (101); and a lower end connection hole (112) is provided at the bottom of the front section sealing door (101).

2. The double-opening airtight civil defense door according to claim 1 is characterized in that: The rotating rod 1 (102) is arranged at the center position inside the front sealing door (101), and the rotating rod 1 (102) passes through the front sealing door (101). The gear bar 1 (107) moves up and down in the lower end connection hole (112), and the transmission gear 2 (108) moves up and down in the upper layer connection hole (110).

3. The double-opening airtight civil defense door according to claim 1 is characterized in that: The rear end sealing mechanism (2) comprises a rear end sealing door (201), wherein a second rotating rod (202) is arranged inside the rear end sealing door (201), wherein one end of the second rotating rod (202) is fixedly connected to a second rotating handle (203), wherein the other end of the second rotating handle (203) is fixedly connected to a second bearing (204), wherein a second gear (205) is transmission-connected to a third transmission gear (206) on the surface of the second gear (205), wherein a third transmission gear (206) is transmission-connected to a third gear bar (207) on the surface of the third transmission gear (206), wherein a fourth transmission gear (208) is transmission-connected to a fourth gear bar (209) on the surface of the second gear (205), wherein a left side connecting hole (210) is provided on the left side of the rear end sealing door (201), and a second right side connecting hole (211) is provided on the right side of the rear end sealing door (201).

4. The double-opening airtight civil defense door according to claim 3 is characterized in that: The second rotating rod (202) is arranged at the center position inside the rear end sealing door (201), and the second rotating rod (202) passes through the rear end sealing door (201). The third gear bar (207) moves left and right inside the rear end sealing door (201), and the fourth gear bar (209) moves left and right inside the second right connection hole (211).

5. The double-opening airtight civil defense door according to claim 1 is characterized in that: The fixing mechanism (3) comprises an installation outer frame (301), an upper fixing hole (302) is provided on the upper side of the interior of the installation outer frame (301), a lower fixing hole (303) is provided on the lower side of the interior of the installation outer frame (301), a right fixing hole (304) is provided on the right side of the interior of the installation outer frame (301), and a hinge (305) is fixedly connected to the surface of the installation outer frame (301).

6. The double-opening airtight civil defense door according to claim 5 is characterized in that: The number of the hinges (305) is four, and the four hinges (305) are evenly distributed on both sides of the mounting outer frame (301) in groups of two.

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