An opening and closing structure for double-leaf protective closed door

Abstract

The utility model discloses an opening and closing structure for a double-leaf protective airtight door, which relates to the technical field of protective airtight doors, including a door frame, a door leaf, a mounting plate, a transmission assembly, a connecting rod opening and closing assembly and a connecting assembly. The mounting plate is mounted on the wall above the door frame, the transmission assembly is arranged on the mounting plate, and is used to drive the opening and closing of the door leaf. There are two groups of connecting rod opening and closing assemblies, which are symmetrically mounted on two door leaves respectively, and are used to cooperate with the transmission assembly to control the opening and closing of the door leaf. There are two groups of connecting assemblies, which are respectively mounted on two door leaves, and are used to control the connection status of the two connecting rod opening and closing assemblies with the two door leaves respectively. The connecting rod transmission structure adopted in the utility model has the advantages of high strength and low wear relative to the transmission connecting rod of the gear assembly. In addition, the opening and closing action is realized by pushing or pulling the middle part of the door leaf through the connecting rod structure, so the service life of the opening and closing structure can be extended, and the opening and closing work can be flexibly switched between automatic and manual.

Description

Technical Field

[0001] The utility model relates to the technical field of protective airtight doors, in particular to an opening and closing structure for double-leaf protective airtight doors. Background Art

[0002] Protective closed doors, also known as civil defense doors, refer to protective equipment installed at the entrances and exits of people's defense projects. With the rapid development of social economy, people have begun to frequently use protective closed doors in the construction industry. Protective closed doors are set at the outermost side of the entrances and exits. They have the functions of blocking shock waves and isolating toxic agents. Protective closed doors should be able to block shock waves and meet the corresponding resistance requirements. When selecting, they should not only meet the needs of the opening size, but also meet the design pressure requirements. There are three types of closed doors: fixed thresholds, movable thresholds and door leaf drop types. Different types of protective closed doors have different advantages.

[0003] The prior art CN 217080150 U discloses a double-leaf protective sealed door, comprising a door frame, door leaves, and a linkage device. Although the utility model allows the two door leaves of the double-leaf protective sealed door to be opened or closed at the same time, and thus the present application makes it more convenient to open or close the double-leaf protective sealed door, the linkage device in the utility model uses gears and other components for transmission. However, some sealed doors are large in size and deadweight, and therefore require a lot of force when opening and closing the door leaves. In addition, the gear assembly is directly used to drive the hinge shaft between the door leaf and the door frame during opening and closing, so the gear structure is subjected to very large force. During the opening and closing process, the large transmission force is bound to accelerate the wear rate of the gear assembly, thereby affecting the service life of the entire opening and closing linkage device, increasing the frequency of later maintenance work, and further increasing the later maintenance cost, resulting in average reliability of the opening and closing structure. Utility Model Content

[0004] 1. Technical issues to be resolved

[0005] In view of the deficiencies in the prior art, the utility model provides an opening and closing structure for a double-leaf protective closed door, which solves the problems raised in the above-mentioned background technology.

[0006] (II) Technical solution

[0007] To achieve the above objectives, the utility model is implemented through the following technical solutions: an opening and closing structure for a double-leaf protective and sealed door, comprising a door frame installed on a door opening; two door leaves, both of which are provided with hinge shafts, and the door leaves are installed on the wall through the hinge shafts; a mounting plate installed on the wall above the door frame; a transmission assembly provided on the mounting plate, for driving the opening and closing of the door leaves; two groups of connecting rod opening and closing assemblies, which are symmetrically installed on the two door leaves and are used to cooperate with the transmission assembly to control the opening and closing of the door leaves; two groups of connecting rod opening and closing assemblies, which are respectively installed on the two door leaves and are used to control the connection status of the two connecting rod opening and closing assemblies with the two door leaves.

[0008] Optionally, the transmission assembly includes: a bidirectional screw rod installed on a mounting plate and parallel to the width direction of the door frame; two screw nuts, symmetrically installed on two threaded segments on the bidirectional screw rod; a drive motor installed on the mounting plate at the end of the bidirectional screw rod, with its output end connected to the bidirectional screw rod for driving the bidirectional screw rod to rotate.

[0009] Optionally, the transmission assembly also includes: two push-pull rods, respectively installed on two screw nuts, for driving the transmission assembly; a guide rail, installed on the mounting plate and parallel to the bidirectional screw, a slider connected to the push-pull rod being slidably installed on the guide rail, for guiding the sliding of the push-pull rod.

[0010] Optionally, the connecting rod opening and closing assembly includes: a second transmission rod, one end of which is hinged to the wall and the other end of which is vertically equipped with a connecting rod, the connecting rod being connected to the connecting assembly and being used to drive the door leaf to rotate around a hinge axis; a first transmission rod, one end of which is hinged to the push-pull rod and the other end is hinged to the second transmission rod and being used to drive the second transmission rod to rotate around a hinge axis between the second transmission rod and the wall.

[0011] Optionally, the connecting assembly includes: a square steel rod, which is parallel to the connecting rod, hollow inside, and sleeved on the connecting rod; a guide sleeve, fixed on the door leaf and sleeved on the outside of the square steel rod; a connecting shaft, installed at the lower part of the square steel rod, with a thread on the connecting shaft, and a handle installed at the lower end of the connecting shaft; a nut, welded to the door leaf and threadedly connected to the thread.

[0012] (III) Beneficial effects

[0013] Compared with the prior art, the beneficial effects of the utility model are:

[0014] 1. The synchronous opening and closing of the two door leaves is realized by the connecting rod transmission structure. Compared with the gear assembly transmission connecting rod, it has the advantages of high strength and low wear. Therefore, it can improve the service life of the closed door opening and closing assembly to a certain extent. In addition, the middle part of the door leaf is pushed or pulled by the connecting rod structure to realize the opening and closing action. According to the principle of lever, such a design can make the force required for opening and closing smaller, and the push and pull force on the door leaf will be more uniform, so it can further reduce the wear of the opening and closing structure during opening and closing, thereby reducing the maintenance frequency and maintenance cost in the later stage to a certain extent, and effectively improving the reliability and practicality of the opening and closing structure;

[0015] 2. Moreover, when the door leaf needs to be opened and closed automatically, the connecting component can connect the linkage component to the door leaf. When the door leaf needs to be opened and closed manually, the connecting component can separate the linkage component from the door leaf. Therefore, the opening and closing work can be flexibly switched between automatic and manual, so that the user can choose the opening and closing method according to actual needs, improve its flexibility, and provide users with a variety of choices. Especially in emergency situations such as power outages or failure of linkage components, the electric opening and closing state can be quickly adjusted to the manual opening and closing state by operating the connecting component, ensuring that the closed door can be opened and closed normally in an emergency state, thereby ensuring the protective capability of the closed door. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 This is a schematic diagram of the three-dimensional structure of the utility model;

[0017] Figure 2 This is a schematic diagram of the front view of the three-dimensional structure of the transmission component of the utility model;

[0018] Figure 3 It is a schematic diagram of a three-dimensional local structure of the utility model from top view;

[0019] Figure 4 This is a schematic diagram of the partial structure of the utility model;

[0020] Figure 5 It is a schematic diagram of the three-dimensional exploded structure of the connection component of the utility model.

[0021] In the figure: 1. door frame; 2. door leaf; 3. mounting plate; 4. transmission assembly; 401. bidirectional screw; 402. screw nut; 403. guide rail; 404. push-pull rod; 405. drive motor; 5. connecting rod opening and closing assembly; 501. first transmission rod; 502. second transmission rod; 503. connecting rod; 6. connecting assembly; 601. guide sleeve; 602. square steel rod; 603. connecting shaft; 604. thread; 605. nut; 606. handle; 7. hinge shaft. DETAILED DESCRIPTION

[0022] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0023] The utility model provides Figures 1 to 5 An embodiment of an opening and closing structure for a double-leaf protective airtight door is shown, comprising:

[0024] Door frame 1, installed on the door opening;

[0025] There are two door leaves 2, each of which is provided with a hinge shaft 7, and the door leaves 2 are mounted on the wall via the hinge shaft 7;

[0026] A mounting plate 3 is mounted on the wall above the door frame 1;

[0027] The transmission assembly 4 is arranged on the mounting plate 3 and is used to drive the door leaf 2 to open and close;

[0028] The transmission assembly 4 comprises:

[0029] The bidirectional screw rod 401 is mounted on the mounting plate 3 and is parallel to the width direction of the door frame 1;

[0030] There are two screw nuts 402, which are symmetrically mounted on two threaded sections of the bidirectional screw 401;

[0031] The driving motor 405 is mounted on the mounting plate 3 at the end of the bidirectional screw rod 401, and its output end is connected to the bidirectional screw rod 401 to drive the bidirectional screw rod 401 to rotate;

[0032] The transmission assembly 4 also includes:

[0033] There are two push-pull rods 404, which are respectively installed on the two screw nuts 402 and are used to drive the transmission assembly 4;

[0034] The guide rail 403 is mounted on the mounting plate 3 and is parallel to the bidirectional screw rod 401. A slider connected to the push-pull rod 404 is slidably mounted on the guide rail 403 to guide the sliding of the push-pull rod 404.

[0035] The connecting rod opening and closing components 5, which are in two groups, are symmetrically installed on the two door leaves 2 and are used to cooperate with the transmission component 4 to control the opening and closing of the door leaves 2;

[0036] The connecting rod opening and closing assembly 5 comprises:

[0037] A second transmission rod 502, one end of which is hinged to the wall, and the other end of which is vertically provided with a connecting rod 503, the connecting rod 503 being connected to the connecting assembly 6, for driving the door leaf 2 to rotate around the hinge shaft 7;

[0038] A first transmission rod 501, one end of which is hinged to the push-pull rod 404, and the other end of which is hinged to the second transmission rod 502, for driving the second transmission rod 502 to rotate around a hinge axis with the wall;

[0039] The connection components 6, which are in two groups, are respectively installed on the two door leaves 2 and are used to control the connection status of the two connecting rod opening and closing components 5 and the two door leaves 2 respectively;

[0040] like Figures 1 to 4 As shown, the driving motor 405 can drive the bidirectional screw 401 to rotate clockwise or counterclockwise on the mounting plate 3, thereby driving the screw nuts 402 on both sides to slide outward or to the middle position at the same time, and thereby driving the push-pull rods 404 on both sides to slide outward or inward along the guide rails 403 at the same time;

[0041] When the push-pull rods 404 on both sides slide outward at the same time, they can push the first transmission rod 501 on the corresponding side, and make the first transmission rods 501 on both sides push the second transmission rods 502 on both sides outward through their other ends, so that the second transmission rods 502 rotate along the hinge axis between them and the wall. At this time, the ends of the second transmission rods 502 on both sides away from the wall will push the door leaf 2 on that side through the connecting rod 503 and the connecting assembly 6 on the corresponding side, and make the door leaf 2 rotate outward around the hinge axis 7, so as to open the door leaves 2 on both sides outward at the same time.

[0042] When the push-pull rods 404 on both sides slide inward at the same time, the door leaves 2 on both sides can be pulled back to their original positions and closed again in the door frame 1, and then locked by the locking assembly on the door leaf 2 (the locking assembly is not shown in the figure, and the locking assembly is a prior art, and its working process will not be repeated here).

[0043] The connection component 6 comprises:

[0044] The square steel rod 602 is parallel to the connecting rod 503, is hollow inside, and is sleeved on the connecting rod 503;

[0045] The guide sleeve 601 is fixed on the door leaf 2 and sleeved on the outside of the square steel rod 602;

[0046] A connecting shaft 603 is installed at the lower part of the square steel rod 602. A thread 604 is provided on the connecting shaft 603, and a handle 606 is installed at the lower end of the connecting shaft 603.

[0047] The nut 605 is welded to the door leaf 2 and is threadedly connected to the thread 604 .

[0048] like Figure 4 and Figure 5 As shown, when the opening and closing mode of the enclosed door needs to be adjusted from electric to manual, it is only necessary to twist the connecting shaft 603 through the handle 606. At this time, under the action of the thread 604 and the nut 605, the square steel rod 602 can be pulled to slide downward along the guide sleeve 601, so as to separate the square steel rod 602 from the connecting rod 503. At this time, the connecting rod 503 is separated from the connecting component 6 and the door leaf 2, and then the opening and closing of the door leaf 2 can be controlled by manually pulling or pushing the door leaf 2.

[0049] The above description is only a preferred specific implementation manner of the present invention, but the protection scope of the present invention is not limited thereto. Any technician familiar with the technical field can make equivalent replacements or changes within the technical scope disclosed by the present invention according to the technical scheme and the utility model concept of the present invention, which should be covered by the protection scope of the present invention.

Claims

1. An opening and closing structure for a double-leaf protective closed door, characterized in that: include: A door frame (1), mounted on the door opening; There are two door leaves (2), each of which is provided with a hinge shaft (7), and the door leaves (2) are mounted on the wall via the hinge shaft (7); A mounting plate (3) mounted on the wall above the door frame (1); A transmission assembly (4) is arranged on the mounting plate (3) and is used to drive the door leaf (2) to open and close; The connecting rod opening and closing components (5) are in two sets and are symmetrically mounted on the two door leaves (2) and are used to cooperate with the transmission component (4) to control the opening and closing of the door leaves (2); The connection components (6) are in two groups and are respectively installed on the two door leaves (2) and are used to control the connection status between the two connecting rod opening and closing components (5) and the two door leaves (2).

2. The opening and closing structure for a double-leaf protective sealed door according to claim 1, characterized in that: The transmission assembly (4) comprises: A bidirectional screw rod (401) is mounted on the mounting plate (3) and is parallel to the width direction of the door frame (1); There are two screw nuts (402) which are symmetrically mounted on two threaded sections of the bidirectional screw (401); The driving motor (405) is mounted on the mounting plate (3) at the end of the bidirectional screw rod (401), and its output end is connected to the bidirectional screw rod (401) for driving the bidirectional screw rod (401) to rotate.

3. The opening and closing structure for a double-leaf protective airtight door according to claim 2, characterized in that: The transmission assembly (4) further comprises: Two push-pull rods (404) are respectively mounted on the two screw nuts (402) and are used to drive the transmission assembly (4); The guide rail (403) is mounted on the mounting plate (3) and is parallel to the bidirectional screw rod (401). A slider connected to the push-pull rod (404) is slidably mounted on the guide rail (403) to guide the sliding of the push-pull rod (404).

4. The opening and closing structure for a double-leaf protective airtight door according to claim 3, characterized in that: The connecting rod opening and closing assembly (5) comprises: A second transmission rod (502), one end of which is hinged to the wall, and the other end of which is vertically provided with a connecting rod (503), the connecting rod (503) being connected to the connecting assembly (6) and used for driving the door leaf (2) to rotate around the hinge shaft (7); The first transmission rod (501) has one end hinged to the push-pull rod (404) and the other end hinged to the second transmission rod (502), and is used to drive the second transmission rod (502) to rotate around the hinge axis between the second transmission rod and the wall.

5. The opening and closing structure for a double-leaf protective airtight door according to claim 4, characterized in that: The connecting component (6) comprises: The square steel rod (602) is parallel to the connecting rod (503), is hollow inside, and is sleeved on the connecting rod (503); A guide sleeve (601) is fixed on the door leaf (2) and sleeved on the outside of the square steel rod (602); A connecting shaft (603) is installed at the lower part of the square steel rod (602), a thread (604) is provided on the connecting shaft (603), and a handle (606) is installed at the lower end of the connecting shaft (603); The nut (605) is welded to the door leaf (2) and is threadedly connected to the thread (604).

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