A door leaf fixing structure of a civil air defense engineering air defense door

Abstract

The utility model discloses a door leaf fixed structure of civil air defence engineering civil air defence door relates to civil air defence engineering technical field. The utility model discloses a door frame and the sealing groove of setting on its inner wall, the inside hinged of door frame has the door leaf body, and the front end surface middle part of door leaf body is fixed with fixed box, and the inside one side of fixed box is provided with adjusting assembly, and the front end surface one side of door leaf body is provided with sealing assembly. The utility model discloses through adjusting assembly, can be individually closed fixed to door leaf body, then to sealing cover inflation seal, avoid door leaf body location fixed process, sealing cover synchronous inflation expansion after influence door leaf body rotation movement, and sealing cover expands after will with door frame surface contact, lead to sealing cover appear the abrasion condition of, influence service life, and utilize sealing groove and sealing assembly, and sealing cover expands after the card of setting in sealing groove, thereby improve the sealing effect after the closing of door leaf body.

Description

Technical Field

[0001] This utility model belongs to the field of civil defense engineering technology, and in particular relates to a door leaf fixing structure for civil defense doors. Background Technology

[0002] Civil defense engineering, also known as civil defense fortification, refers to underground protective buildings constructed independently to ensure the shelter of personnel and materials, command of civil air defense, and medical rescue during wartime, as well as basements built in conjunction with above-ground buildings that can be used for air defense during wartime. Civil defense engineering is an important facility for preventing sudden enemy attacks, effectively sheltering personnel and materials, and preserving war potential; it is an engineering guarantee for persisting in urban combat and supporting the long-term anti-aggression war until victory. In civil defense engineering, civil defense doors are the main equipment in the building structure. The door leaf structure of civil defense doors is fixed by a fixed structure during installation, which can improve the strength of the civil defense door.

[0003] A search revealed that publication number CN217106729U, published on August 2, 2022, discloses a door leaf fixing structure for an impact-resistant basement air-raid shelter door. The technical solution includes a door leaf and a door frame. Hinges are fixedly installed on the edge of the door leaf, and the door leaf is movably connected to the door frame via the hinges. A rubber sleeve is fixedly wrapped around the edge of the door leaf. An operating component, a sealing drive component, a limit transmission component, and a limit execution component are provided on the surface of the door leaf. The beneficial effects of this impact-resistant basement air-raid shelter door leaf fixing structure are: by setting up the rubber sleeve, operating component, sealing drive component, limit transmission component, and limit execution component, rotating the first rotating wheel can fix the door leaf while simultaneously inflating the inside of the rubber sleeve. The expanded rubber sleeve achieves a seal, resulting in a better sealing effect compared to existing technologies. When the door leaf is opened, the air pressure inside the rubber sleeve decreases, preventing pressure on the outer edge of the door leaf, facilitating opening the door leaf, and enhancing its practicality.

[0004] However, it still has the following drawbacks in practical use:

[0005] 1. In the existing civil defense engineering civil defense door fixing structure, the limit rod fixes the door leaf and the rubber sleeve is inflated at the same time. This method causes the rubber sleeve to be filled with air before the door leaf is fully closed, which affects the closing action of the door leaf and also wears down the rubber sleeve.

[0006] 2. Existing door fixing structures for civil defense projects use rubber sleeves installed between the door leaf and the door frame. This method causes significant wear on the rubber sleeves and results in poor sealing. Therefore, we provide a door fixing structure for civil defense projects to solve the aforementioned problems. Utility Model Content

[0007] The purpose of this utility model is to provide a door leaf fixing structure for civil defense engineering civil defense doors. By setting an adjustment component, the door leaf body can be closed and fixed separately. Then, the sealing sleeve is inflated and sealed. This avoids the sealing sleeve from affecting the rotation and movement of the door leaf body when it is simultaneously inflated and expanded during the door leaf body's limiting and fixing process, and also avoids the sealing sleeve from contacting the door frame surface after expansion, which would cause wear on the sealing sleeve and affect its service life. Furthermore, by using a sealing groove and sealing component, the sealing sleeve is locked in the sealing groove after expansion, thereby improving the sealing effect after the door leaf body is closed.

[0008] To solve the above-mentioned technical problems, this utility model is achieved through the following technical solution:

[0009] This utility model is a door leaf fixing structure for civil defense engineering civil defense doors, including a door frame and a sealing groove set on its inner wall. The door leaf body is hinged inside the door frame. A fixing box is fixed in the middle of the front end face of the door leaf body. An adjustment component is set on one side of the inside of the fixing box. A sealing component is set on one side of the front end face of the door leaf body.

[0010] The adjustment assembly includes a handwheel located in front of the fixed box, and a second rotating shaft fixed in the middle of the rear end face of the handwheel, with the other end of the second rotating shaft passing through a bearing on the fixed box;

[0011] The sealing assembly includes an air cylinder installed on one side of the front face of the door body, and a rubber plug installed inside the air cylinder, with a toothed plate installed in the middle of one side wall of the rubber plug.

[0012] The present invention is further configured such that an installation groove is provided in the middle of the outer wall of the door leaf body, and a first rotating shaft is rotatably installed on one side of the inside of the fixing box.

[0013] The present invention is further configured such that a worm gear is sleeved in the middle of the outer wall of the first rotating shaft, and pin assemblies are provided at the top and bottom of the outer wall of the first rotating shaft.

[0014] The present invention is further configured such that a movable shaft is provided behind the second rotating shaft, and a spline shaft is fixed at the center of both the front and rear ends of the movable shaft, and the spline shaft is slidably inserted into the interior of the adjacent spline groove.

[0015] The present invention is further configured such that a sliding plate is rotatably sleeved on the front end of the outer wall of the movable shaft, and a screw is threadedly connected in the threaded hole at the bottom of the sliding plate. One end of the screw passes through the bearing on the fixed box and is connected to the rotating plate.

[0016] The present invention is further configured such that a worm gear is fixedly provided behind the outer wall of the movable shaft, and a third rotating shaft is rotatably installed behind the movable shaft, with a gear plate sleeved on the outer wall of the third rotating shaft.

[0017] The present invention is further configured such that an air pipe is provided in the middle of one side wall of the air cylinder, and the other end of the air pipe is connected to a sealing sleeve, which is installed inside the mounting groove.

[0018] This utility model has the following beneficial effects:

[0019] 1. This utility model, by setting an adjustment component, allows for the independent closing and fixing of the door leaf body, followed by inflation and sealing of the sealing sleeve. This avoids the situation where the sealing sleeve expands synchronously during the door leaf body's limiting and fixing process, thus preventing it from affecting the rotation and movement of the door leaf body, and also prevents the sealing sleeve from contacting the door frame surface after expansion, causing wear and affecting its service life. This solves the problem that in existing civil defense engineering civil defense door fixing structures, the limiting rod fixes the door leaf and the rubber sleeve is inflated simultaneously. In this method, when the door leaf is not closed, a certain amount of air will be injected into the rubber sleeve, which will affect the closing action of the door leaf and also wear down the rubber sleeve.

[0020] 2. This utility model improves the sealing effect of the door body after it is closed by setting a sealing groove and a sealing component. The sealing sleeve expands and gets stuck in the sealing groove. This solves the problem that the existing door fixing structure of civil defense engineering civil defense doors is set between the door leaf and the door frame by rubber sleeves, which causes great wear on the rubber sleeves and has poor sealing effect. Attached Figure Description

[0021] To more clearly illustrate the technical solutions of the embodiments of this utility model, the accompanying 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.

[0022] Figure 1 This is a schematic diagram of the door leaf fixing structure of a civil defense door in a civil defense project.

[0023] Figure 2 This is a cross-sectional view of the door leaf fixing structure of a civil defense door in a civil defense project.

[0024] Figure 3 This is a structural diagram of the door leaf body.

[0025] Figure 4 This is a structural diagram of the first rotating shaft.

[0026] Figure 5 This is a disassembly diagram of the fixing box and adjustment components.

[0027] Figure 6 This is a disassembly diagram of the sealing assembly.

[0028] The attached diagram lists the components represented by each number as follows:

[0029] 100-Door frame, 101-Sealing groove, 102-Door leaf body, 102a-Mounting groove, 103-Fixing box, 104-First rotating shaft, 104a-Worm gear, 105-Pin assembly, 200-Adjusting assembly, 201-Handwheel, 202-Second rotating shaft, 203-Moving shaft, 203a-Splined shaft, 203b-Worm gear, 204-Sliding plate, 205-Screw, 205a-Rotating plate, 206-Third rotating shaft, 206a-Gear plate, 300-Sealing assembly, 301-Air cylinder, 302-Gear plate, 302a-Rubber plug, 303-Air pipe, 304-Sealing sleeve. Detailed Implementation

[0030] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those skilled in the art without creative effort are within the protection scope of the present utility model.

[0031] Example 1

[0032] Please see Figures 1 to 5 This utility model is a door leaf fixing structure for a civil defense door in a civil defense project, including a door frame 100 and a sealing groove 101 set on its inner wall. The door leaf body 102 is hinged inside the door frame 100. A fixing box 103 is fixed in the middle of the front end face of the door leaf body 102. An adjustment component 200 is set on one side inside the fixing box 103. The adjustment component 200 includes a handwheel 201 set in front of the fixing box 103 and a second rotating shaft 202 fixed in the middle of the rear end face of the handwheel 201. The other end of the second rotating shaft 202 passes through a bearing on the fixing box 103.

[0033] Specifically, a mounting groove 102a is provided in the middle of the outer wall of the door body 102, and a first rotating shaft 104 is rotatably mounted on one side of the inside of the fixing box 103; a worm gear 104a is sleeved in the middle of the outer wall of the first rotating shaft 104, and pin assemblies 105 are provided at the top and bottom of the outer wall of the first rotating shaft 104; a moving shaft 203 is provided behind the second rotating shaft 202, and spline shafts 203a are fixed at the center of the front and rear ends of the moving shaft 203. The sliding shaft 203 is slidably inserted into the adjacent spline groove; a sliding plate 204 is rotatably sleeved on the front end of the outer wall of the moving shaft 203, and a screw 205 is threadedly connected in the threaded hole at the bottom of the sliding plate 204. One end of the screw 205 passes through the bearing on the fixed box 103 and is connected to the rotating plate 205a; a worm gear 203b is fixedly provided at the rear of the outer wall of the moving shaft 203, and a third rotating shaft 206 is rotatably installed at the rear of the moving shaft 203. A gear plate 206a is sleeved on the outer wall of the third rotating shaft 206.

[0034] Furthermore, the sealing groove 101 and the mounting groove 102a are correspondingly provided. The pin assembly 105 is existing technology and will not be described in detail here. The worm 104a meshes with the worm wheel 203b to achieve the function of transmission. The helical tooth design (small inclination angle) of the worm 104a and the worm wheel 203b ensures that the worm wheel 203b can smoothly disengage or enter the meshing state when moving axially. The second rotating shaft 202 and the third rotating shaft 206 are provided with spline grooves on their symmetrical end faces. The front and rear ends of the moving shaft 203 are equipped with spline shafts 203a, which can be inserted into the corresponding spline grooves. The bottom of the sliding plate 204 is slidably connected to the bottom of the fixed box 103. The thread on the outer wall of the screw 205 is threadedly connected to the threaded hole on the sliding plate 204 to achieve the function of transmission. The gear plate 206a meshes with the upper gear plate 302 to achieve the function of transmission.

[0035] The operation process of this embodiment is as follows: When it is necessary to close the door body 102, the door body 102 is rotated under the action of the hinge to rotate into the door frame 100. Then, the handwheel 201 is rotated. The rotation of the handwheel 201 drives the second rotating shaft 202 to rotate. The rotation of the second rotating shaft 202 will drive the moving shaft 203 to rotate under the action of the spline shaft 203a and the spline groove, and cause the worm gear 203b on the outer wall of the moving shaft 203 to rotate synchronously. The worm gear 203b meshes with the worm 104a on one side, so the rotation of the worm gear 203b will drive the worm 104a to rotate, and drive the first rotating shaft 104 to rotate. 04 The door body 102 can be fixed by the pin assembly 105. During this process, the moving shaft 203 and the third rotating shaft 206 are not connected, so the third rotating shaft 206 cannot rotate synchronously. After the door body 102 is fixed, the rotating plate 205a is rotated. The rotating plate 205a is driven by force to rotate the screw 205. The thread on the outer wall of the screw 205 is threadedly engaged with the threaded hole on the sliding plate 204. Therefore, the rotation of the screw 205 will drive the sliding plate 204 to move backward and move the moving shaft 203 synchronously, so that the spline shaft 203a at the rear end of the moving shaft 203 is inserted into the spline groove on the third rotating shaft 206. During this movement, the worm gear 203b moves behind the worm 104a, disengaging them. Then, the handwheel 201 is rotated again, causing the third shaft 206 and the gear plate 206a to rotate synchronously. The gear plate 206a meshes with the upper gear plate 302, so its rotation pushes and adjusts the position of the gear plate 302, achieving synchronous transmission. This operation method achieves step-by-step control of first separately fixing the door body 102 and then inflating the sealing sleeve 304. This effectively prevents the sealing sleeve 304 from obstructing the rotation of the door body 102 due to synchronous inflation during the fixing process. Simultaneously, it prevents the sealing sleeve 304 from expanding and rubbing against the door frame 100 surface before the door body 102 is fully fixed, thus preventing wear and extending its service life.

[0036] Example 2

[0037] Please see Figure 3 and Figure 6 Based on Embodiment 1, unlike the first embodiment, a sealing assembly 300 is provided. The sealing assembly 300 includes an air cylinder 301 installed on one side of the front end face of the door leaf body 102, and a rubber plug 302a installed inside the air cylinder 301. A toothed plate 302 is installed in the middle of one side wall of the rubber plug 302a. This solves the problem that the existing door leaf fixing structure of civil defense engineering civil defense doors is set between the door leaf and the door frame through a rubber sleeve, which causes greater wear on the rubber sleeve and has poor sealing effect.

[0038] Specifically, an air pipe 303 is provided in the middle of one side wall of the air cylinder 301, and the other end of the air pipe 303 is connected to a sealing sleeve 304, which is installed inside the mounting groove 102a.

[0039] Furthermore, the toothed plate 302 can move and adjust the position of the rubber plug 302a under the action of the toothed disc 206a, thereby adjusting the amount of air in the air cylinder 301 and the rubber sleeve.

[0040] The operation process of this embodiment is as follows: the toothed plate 302 moves under the action of the toothed disc 206a, which pushes the rubber plug 302a to move along the inner wall of the air cylinder 301. The movement of the rubber plug 302a will squeeze the air in the air cylinder 301. The squeezed air is filled into the sealing sleeve 304 through the air pipe 303, causing the sealing sleeve 304 to expand and get stuck in the sealing groove 101, thereby improving the sealing effect after the door body 102 is closed.

[0041] In the description of this specification, references to terms such as "an embodiment," "example," "specific example," etc., indicate that a specific feature, structure, material, or characteristic described in connection with that embodiment or example is included in at least one embodiment or example of the present invention. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples.

Claims

1. A door leaf fixing structure for a civil defense engineering civil defense door, comprising a door frame (100) and a sealing groove (101) disposed on its inner wall, wherein a door leaf body (102) is hinged inside the door frame (100), and a fixing box (103) is fixedly disposed in the middle of the front end face of the door leaf body (102), characterized in that: An adjustment component (200) is provided on one side of the interior of the fixing box (103), and a sealing component (300) is provided on one side of the front end face of the door body (102); The adjustment assembly (200) includes a handwheel (201) disposed in front of the fixed box (103) and a second rotating shaft (202) fixed in the middle of the rear end face of the handwheel (201), the other end of the second rotating shaft (202) passing through a bearing on the fixed box (103); The sealing assembly (300) includes an air cylinder (301) installed on one side of the front end face of the door body (102) and a rubber plug (302a) installed inside the air cylinder (301), wherein a toothed plate (302) is installed on the middle of one side wall of the rubber plug (302a).

2. The door leaf fixing structure of a civil defense door for civil defense engineering according to claim 1, characterized in that, The outer wall of the door body (102) is provided with an installation groove (102a), and the first rotating shaft (104) is rotatably installed on one side of the inside of the fixing box (103).

3. The door leaf fixing structure of a civil defense door for civil defense engineering according to claim 2, characterized in that, A worm gear (104a) is sleeved in the middle of the outer wall of the first rotating shaft (104), and a pin assembly (105) is provided at the top and bottom of the outer wall of the first rotating shaft (104).

4. The door leaf fixing structure of a civil defense door for civil defense engineering according to claim 1, characterized in that, A movable shaft (203) is provided behind the second rotating shaft (202). A spline shaft (203a) is fixed at the center of both the front and rear ends of the movable shaft (203). The spline shaft (203a) is slidably inserted into the interior of the adjacent spline groove.

5. The door leaf fixing structure of a civil defense door for civil defense engineering according to claim 4, characterized in that, A sliding plate (204) is rotatably sleeved on the front end of the outer wall of the movable shaft (203). A screw (205) is threadedly connected in the threaded hole at the bottom of the sliding plate (204). One end of the screw (205) passes through the bearing on the fixed box (103) and is connected to the rotating plate (205a).

6. The door leaf fixing structure of a civil defense door for civil defense engineering according to claim 5, characterized in that, A worm gear (203b) is fixedly mounted on the rear of the outer wall of the movable shaft (203), and a third rotating shaft (206) is rotatably mounted on the rear of the movable shaft (203). A gear disc (206a) is sleeved on the outer wall of the third rotating shaft (206).

7. The door leaf fixing structure of a civil defense door for civil defense engineering according to claim 3, characterized in that, An air pipe (303) is provided in the middle of one side wall of the air cylinder (301), and the other end of the air pipe (303) is connected to a sealing sleeve (304). The sealing sleeve (304) is installed inside the mounting groove (102a).

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