Civil air defense construction air-tight door

Abstract

The air-tight door comprises a door frame, a door plate and a supporting assembly, the door frame is pre-buried in a wall, one side of the door plate is connected with one side of the door frame through a hinge, the supporting assembly comprises a bottom plate, a supporting plate, a vertical plate and an eccentric wheel, the bottom plate is fixed to the ground through expansion bolts, a groove is formed in the middle of the bottom plate, the supporting plate is installed in the groove, and the vertical plate is fixed to the bottom plate. The two vertical plates are vertically installed on the supporting plate, the eccentric wheel is installed between the two vertical plates through a rotating shaft, and the upper portion of the eccentric wheel abuts against the lower end face of the door plate. The lever is used for being connected with the eccentric wheel, after the door plate is opened, the lever can be used for driving the eccentric wheel to rotate, and the suspended side of the door plate can be supported after the eccentric wheel rotates, so that one side of the door plate is prevented from falling, the hinge is evenly stressed, and hinge deformation is prevented from affecting opening and closing of the door plate.

Description

Technical Field

[0001] This application relates to the technical field of civil air defense engineering facilities, and particularly to a civil air defense engineering airtight door. Background Art

[0002] In the underground civil air defense projects in China, airtight doors are installed at important entrances and exits. After being closed during wartime, they can form an airtight space to resist the ground shock wave. Existing civil air defense doors are generally made by welding steel plates. According to the size, the weight of a single-door opening ranges from 300 kg to several tons. The civil air defense door is installed on the door frame through hinges, and the airtight door is usually in an open state during peacetime, causing one side of the airtight door to hang in the air. Under the action of gravity, the forces on each hinge are uneven, easily leading to hinge deformation and affecting the opening and closing of the airtight door. For this reason, some support devices have been designed. For example, a multifunctional backrest for a civil air defense door disclosed in Chinese Patent with the application number 202410270045.4 includes a bottom plate, rollers fixed on the bottom plate, a support plate rotatably arranged on the rollers, a first pillar fixed on the bottom surface of the second end of the support plate, a second pillar fixed on the top surface of the bottom plate corresponding to the first pillar, a spring sleeved on the first pillar and the second pillar, and a baffle fixed on the bottom plate and close to the second end of the support plate. The middle of the bottom surface of the support plate is rotatably connected to the roller. Since the support plate of this device needs to rotate and the civil air defense door needs to be opened and closed manually, the support plate cannot be closely attached to the lower end of the civil air defense door. Therefore, the supporting force of the support plate on the lower part of the civil air defense door is limited, and the suspended side of the civil air defense door will still drop, resulting in hinge deformation. Therefore, a civil air defense engineering airtight door is needed, which is provided with a support component that can effectively support one side of the airtight door to prevent the hinge from deforming due to uneven force. Summary of the Utility Model

[0003] To solve the above problems, this application proposes a civil air defense engineering airtight door, which is provided with a support component that can effectively support one side of the airtight door to prevent the hinge from deforming due to uneven force.

[0004] This application is achieved through the following technical solutions:

[0005] This application proposes a civil air defense engineering airtight door, including: a door frame, a door panel, and a support component. The door frame is embedded in the wall, one side of the door panel is connected to one side of the door frame through a hinge. The support component includes a bottom plate, a support plate, a vertical plate, and an eccentric wheel. The bottom plate is fixed on the ground through expansion bolts. There is a groove in the middle of the bottom plate. The support plate is installed in the groove. Two vertical plates are vertically installed on the support plate. The eccentric wheel is installed between the two vertical plates through a rotating shaft. The upper part of the eccentric wheel abuts against the lower end surface of the door panel.

[0006] Further, one side of the eccentric wheel is provided with a lever, and the lever is fixedly connected to the eccentric wheel.

[0007] Further, the lever is parallel to the eccentric direction of the eccentric wheel. When the lever rotates to be perpendicular to the ground, the upper part of the eccentric wheel rises to the highest point.

[0008] Further, a guide rod is installed in the groove, and the support plate is slidably connected to the guide rod.

[0009] Further, adjusting nuts are provided at the four corner positions of the support plate. The middle part of the adjusting nut is connected to the support plate by threads, and the lower end of the adjusting nut abuts against the bottom of the groove.

[0010] Further, one side of the door panel is connected to one side of the door frame by a plurality of hinges, and the rotating shafts of the plurality of hinges are on the same vertical line.

[0011] The beneficial effects of the present application: By using a lever to connect the eccentric wheel, after the door panel is opened, the lever can be used to drive the eccentric wheel to rotate. After the eccentric wheel rotates, it can support the suspended side of the door panel, thereby preventing one side of the door panel from sagging, making the hinges evenly stressed, and avoiding hinge deformation that affects the opening and closing of the door panel. Description of the Drawings

[0012] Figure 1 is a schematic structural diagram of the present utility model;

[0013] Figure 2 is a schematic structural diagram of the support assembly of the present utility model;

[0014] Figure 3 is a schematic diagram before the support assembly supports the door panel;

[0015] In the figure: 1 - door frame, 2 - door panel, 3 - support assembly, 4 - hinge, 5 - bottom plate, 6 - support plate, 7 - vertical plate, 8 - eccentric wheel, 9 - expansion bolt, 10 - lever, 11 - guide rod, 12 - adjusting nut. Detailed Embodiments

[0016] Next, the technical solutions in the embodiments of the present application will be clearly and completely described with reference to the accompanying drawings in the embodiments of the present application. Among them, the same or similar reference numerals represent the same or similar elements or elements with the same or similar functions from beginning to end. Obviously, the described embodiments are only a part of the embodiments of the present utility model, rather than all of the embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present utility model.

[0017] It should be noted that all directional indications (such as up, down, left, right, front, back...) in the embodiments of this application are only used to explain the relative positional relationship and movement conditions between components in a specific posture (as shown in the attached drawings). If the specific posture changes, the directional indications will also change accordingly.

[0018] In addition, the descriptions involving "first", "second", etc. in this application are only for descriptive purposes and should not be construed as indicating or implying their relative importance or implicitly specifying the quantity of the indicated technical features. Thus, the features defined with "first" and "second" may explicitly or implicitly include at least one of the said features. In addition, the technical solutions between various embodiments can be combined with each other, but it must be based on the ability of those of ordinary skill in the art to implement. When the combination of technical solutions is contradictory or cannot be implemented, it should be considered that such a combination of technical solutions does not exist and is not within the protection scope required by this utility model.

[0019] As Figures 1 to 3 shown, an embodiment of the present utility model provides a blast door for civil air defense projects, including: a door frame 1, a door panel 2, and a support assembly 3. The door frame 1 is embedded in the wall. One side of the door panel 2 is connected to one side of the door frame 1 through a hinge 4. The support assembly 3 includes a bottom plate 5, a support plate 6, a vertical plate 7, and an eccentric wheel 8. The bottom plate 5 is fixed to the ground through an expansion bolt 9. A groove is provided in the middle of the bottom plate 5. The support plate 6 is installed in the groove. Two vertical plates 7 are vertically installed on the support plate 6. The eccentric wheel 8 is installed between the two vertical plates 7 through a rotating shaft. The upper part of the eccentric wheel 8 abuts against the lower end surface of the door panel 2.

[0020] After the door panel 2 is connected to the door frame 1 through the hinge 4, the door panel 2 can rotate horizontally around the door frame 1 to realize the opening and closing of the door panel 2. Usually, the door panel 2 is in the open state. The support assembly 3 is installed below the maximum opening position of the door panel 2 to support the suspended side of the door panel 2, avoiding the downward sag of the suspended side of the door panel 2, making the force between the hinges 4 balanced, thereby avoiding the deformation of the hinges 4 and ensuring the smooth opening and closing of the door panel 2.

[0021] The support principle of the support assembly 3 is as follows: When the door panel 2 is opened to the maximum position, at this time the door panel 2 rotates above the support assembly 3. By pulling up the lever 10, the eccentric wheel 8 can be driven to rotate. Since the rotation center of the eccentric wheel 8 is not the center of the circle, when the eccentric wheel 8 rotates, its upper part continuously approaches the lower end surface of the door panel 2 and supports the lower end surface of the door panel 2, thereby effectively supporting the lower end of the lower end surface of the door panel 2 and preventing the suspended side of the door panel 2 from sagging. As Figure 3 shown, when it is necessary to close the door panel 2, the lever 10 is pulled in the reverse direction to separate the eccentric wheel 8 from the door panel 2. At this time, the door panel 2 can rotate freely, and the door panel 2 can be closed by manually pushing the door panel 2.

[0022] Preferably, as Figure 2 shown, a lever 10 is provided on one side of the eccentric wheel 8. The lever 10 is fixedly connected to the eccentric wheel 8. The lever 10 can increase the torque so that the operator can rotate the eccentric wheel 8 more labor - savingly, thereby supporting the heavy door panel 2.

[0023] In a preferred embodiment, the lever 10 is parallel to the eccentric direction of the eccentric wheel 8. When the lever 10 rotates to be perpendicular to the ground, the upper part of the eccentric wheel 8 rises to the highest. When the eccentric wheel 8 supports the door panel 2, the lever 10 is in a vertical state, thus avoiding the lever 10 affecting the movement of people.

[0024] In a preferred embodiment, a guide rod 11 is installed in the groove. The support plate 6 is slidably connected to the guide rod 11. The support plate 6 realizes linear movement under the guiding action of the guide rod 11.

[0025] In a specific embodiment, adjusting nuts 12 are provided at the four corner positions of the support plate 6. The middle part of the adjusting nut 12 is connected to the support plate 6 by threads. The lower end of the adjusting nut 12 abuts against the bottom of the groove. By rotating the adjusting nut 12, the support plate 6 can be lifted by the adjusting nut 12, thereby adjusting the height of the support plate 6 and the height of the eccentric wheel 8. By adjusting the height of the eccentric wheel 8, the supporting force of the eccentric wheel 8 on the door panel 2 can be adjusted.

[0026] Preferably, one side of the door panel 2 is connected to one side of the door frame 1 through a plurality of hinges 4, and the rotating shafts of the plurality of hinges 4 are on the same vertical line, so that the door panel 2 rotates in the horizontal direction. After the door panel 2 is supported by the eccentric wheel 8, the acting forces received by each hinge 4 are all vertically downward, making the forces on each hinge 4 uniform.

[0027] Of course, the present application can also have many other implementation manners. Based on this implementation manner, other implementation manners obtained by ordinary technical personnel in the art without any creative labor belong to the scope protected by the present application.

Claims

1. A closed door for civil air defense projects, characterized in that: include: A door frame (1), a door panel (2), and a support assembly (3), wherein the door frame (1) is pre-buried in a wall, one side of the door panel (2) is connected to one side of the door frame (1) via a hinge (4), and the support assembly (3) comprises a base plate (5), a support plate (6), a vertical plate (7), and an eccentric wheel (8), wherein the base plate (5) is fixed to the ground via expansion bolts (9), a groove is provided in the middle of the base plate (5), the support plate (6) is installed in the groove, two vertical plates (7) are vertically installed on the support plate (6), and the eccentric wheel (8) is installed between the two vertical plates (7) via a rotating shaft, and the upper part of the eccentric wheel (8) is pressed against the lower end surface of the door panel (2).

2. The airtight door for civil air defense projects according to claim 1, characterized in that: A lever (10) is provided on one side of the eccentric wheel (8), and the lever (10) is fixedly connected to the eccentric wheel (8).

3. The airtight door for civil air defense projects according to claim 2, characterized in that: The lever (10) is parallel to the eccentric direction of the eccentric wheel (8). When the lever (10) is rotated to be perpendicular to the ground, the upper part of the eccentric wheel (8) rises to the highest position.

4. The airtight door for civil air defense projects according to claim 1, characterized in that: A guide rod (11) is installed in the groove, and the support plate (6) is slidably connected to the guide rod (11).

5. The airtight door for civil air defense projects according to claim 1, characterized in that: The four corners of the support plate (6) are provided with adjusting nuts (12), the middle part of the adjusting nut (12) is connected to the support plate (6) through a thread, and the lower end of the adjusting nut (12) is pressed against the bottom of the groove.

6. The airtight door for civil air defense projects according to claim 1, characterized in that: One side of the door panel (2) is connected to one side of the door frame (1) via a plurality of hinges (4), and the rotation axes of the plurality of hinges (4) are on the same vertical line.

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