CN111119637A

CN111119637A - Pneumatic cabin body door cover opening mechanism

Info

Publication number: CN111119637A
Application number: CN201911333988.2A
Authority: CN
Inventors: 汤金若; 陆强华
Original assignee: Beijing Institute of Electronic System Engineering
Current assignee: Beijing Institute of Electronic System Engineering
Priority date: 2019-12-23
Filing date: 2019-12-23
Publication date: 2020-05-08

Abstract

The invention discloses a pneumatic cabin body door cover opening mechanism which comprises a door cover, a moving frame, a door opening cylinder assembly, a high-pressure gas cylinder, a front opening locking mechanism, a rear opening locking mechanism and a gas path pipeline, wherein pins on two sides of the door cover are connected to guide rails on two side surfaces of the moving frame; the movable frame consists of two side surfaces and an end surface, and the end surface of the movable frame is connected with a pull rod of the door opening cylinder assembly through threads; the locking mechanism before opening and the locking mechanism after opening are multi-stage cylinders, and locking or releasing is realized under the cooperation of a spring; the door opening cylinder assembly applies pulling force to the moving frame through the pull rod under the action of high-pressure gas so as to move the moving frame and the door cover; after the door cover is opened, the locking mechanism is released after the door cover moves in place, so that the door cover is limited to move reversely. Compared with the prior art, the cabin body door cover is unlocked when the door cover is opened according to the technical scheme provided by the invention, the cabin body door cover is locked after the door cover moves in place, the opening mechanism is powered by high-pressure air, and the cabin body door cover can be opened within 0.3 s.

Description

Pneumatic cabin body door cover opening mechanism

Technical Field

The invention belongs to the technical field of cabin body door covers, and particularly relates to a pneumatic cabin body door cover opening mechanism.

Background

The cabin is a common structure on the cabin sections of airplanes, spacecrafts and missiles, and the openable cabin door cover is arranged to have the capacity of opening the cabin when performing tasks, such as cabin doors of airplanes and manned spaceships. In the prior art, the cabin door cover opening mechanism adopts a hydraulic system to provide power, the cabin door opening speed is slow, and the cabin door opening mechanism generally needs more than 5 seconds of opening time.

In view of this, the present invention provides a pneumatic cabin door cover opening mechanism to achieve quick opening of the door cover and alleviate the disadvantages of the prior art.

Disclosure of Invention

The invention provides a pneumatic cabin body door cover opening mechanism which comprises a door cover, a moving frame, a door opening cylinder assembly, a high-pressure gas cylinder, a front opening locking mechanism, a rear opening locking mechanism and a gas path pipeline, wherein pins on two sides of the door cover are connected to guide rails on two side surfaces of the moving frame; the movable frame consists of two side surfaces and an end surface, and the end surface of the movable frame is connected with a pull rod of the door opening cylinder assembly through threads; the locking mechanism before opening and the locking mechanism after opening are multi-stage cylinders, and locking or releasing is realized under the cooperation of a spring; the high-pressure gas cylinder inputs high-pressure gas to the front-opening locking mechanism through a gas path pipeline, and the front-opening locking mechanism overcomes the resistance of a spring to generate displacement under the action of the high-pressure gas so as to lead the cylindrical surfaces of different stages to be connected with the high-pressure gas; the door opening cylinder assembly applies pulling force to the moving frame through the pull rod under the action of high-pressure gas so as to move the moving frame and the door cover; after the door cover is opened, the locking mechanism is released after the door cover moves in place, so that the door cover is limited to move reversely.

Furthermore, the guide rails on the two side surfaces of the moving frame are inclined rails, the cabin body is provided with a horizontal rail and a vertical rail, when the moving frame is displaced horizontally, the pins on the two sides of the door cover are displaced vertically under the action of the inclined rails and the vertical rails, and the pins on the two sides of the door cover are displaced horizontally under the action of the inclined rails and the horizontal rails.

Further, the inclination angle of the guide rails on the two sides of the moving frame is 45 degrees.

Further, a sealing ring is arranged on the locking mechanism before opening.

Furthermore, one side of the locking pin of the locking mechanism is an inclined plane after being opened, and the locking pin is locked under the pushing of the movable frame.

Furthermore, a pin hole is formed in the moving frame, so that after the door cover is in place, the locking pin of the locking mechanism is released to the pin hole after the door cover is opened.

The invention has the following beneficial effects:

when the pneumatic cabin door cover opening mechanism provided by the invention realizes the opening of the door cover, the cabin door cover is firstly unlocked, the cabin door cover is opened after the unlocking is finished, and the door cover is locked in place after the door cover is moved in place. In addition, the opening mechanism is powered by high-pressure air, and the opening of the door cover of the cabin body can be guaranteed to be completed within 0.3 s.

Drawings

The following describes embodiments of the present invention in further detail with reference to the accompanying drawings.

FIG. 1 is a schematic top view of a pneumatic mechanism for opening a door cover of a cabin according to an embodiment of the present invention;

FIG. 2 is a schematic side view of a pneumatic mechanism for opening the door of the cabin according to an embodiment of the present invention;

FIG. 3 is a schematic diagram of a pneumatic cabin door cover opening mechanism before and after unlocking a locking mechanism before opening according to an embodiment of the present invention;

FIG. 4 is a schematic view of the connection between the door cover and the movable frame of the opening mechanism of the door cover of the pneumatic chamber according to the embodiment of the present invention;

FIG. 5 is a schematic view of a movable frame and a cabin track of a pneumatic cabin door cover opening mechanism according to an embodiment of the present invention;

fig. 6 is a schematic diagram of the locking mechanism and the movable frame after the opening mechanism of the door cover of the pneumatic cabin is opened according to the embodiment of the invention.

Detailed Description

The pneumatic mechanism for opening the door cover of a cabin according to the present invention will be described in detail with reference to the accompanying drawings and examples, which are provided for illustration only and are not intended to limit the scope of the present invention.

A pneumatic cabin door cover opening mechanism is shown in figures 1 and 2 and comprises a door cover 1, a moving frame 2, a door opening cylinder assembly 3, a high-pressure gas cylinder 4, a front opening locking mechanism 5, a rear opening locking mechanism 6 and a gas path pipeline 7. As shown in fig. 4, the pins at both sides of the door 1 are coupled to the guide rails at both sides of the moving frame 2. The moving frame 2 consists of two side surfaces and an end surface, and the end surface of the moving frame 2 is connected with a pull rod of the door opening cylinder assembly 3 through threads. As shown in fig. 3 and 6, the locking mechanism 5 before unlocking and the locking mechanism 6 after unlocking are multi-stage cylinders, and locking or releasing is realized under the cooperation of springs;

as shown in fig. 2 and 3, the high-pressure gas cylinder 4 inputs high-pressure gas to the front-opening locking mechanism 5 through the gas path pipeline 7, and the front-opening locking mechanism 5 overcomes the resistance of the spring to displace under the action of the high-pressure gas, so that the cylindrical surfaces of different stages are connected with the high-pressure gas. As shown in fig. 3, when the locking mechanism 5 is in the state before unlocking, i.e. when the spring is in the release state before opening, the surface with a larger cross-sectional area of the cylinder blocks the air passage, so that the door opening cylinder assembly 3 cannot receive high-pressure air. When the locking mechanism 5 is in the unlocked state before opening, namely when the spring is in the locked state, the surface with the smaller cross-sectional area of the cylinder dredges the air passage, so that high-pressure air directly acts on the door opening cylinder assembly 3. In a preferred embodiment, a sealing ring is provided on the locking mechanism 5 before opening to ensure the tightness of the mechanism.

As shown in fig. 4, the door-opening cylinder assembly 3 applies a pulling force to the moving frame 2 through the pull rod by the high-pressure gas to move the moving frame 2 and the door cover 1. As shown in fig. 5, the guide rails on the two sides of the moving frame 2 are inclined rails, the cabin is provided with a horizontal rail and a vertical rail, when the moving frame 2 is displaced horizontally, the pins on the two sides of the door cover 1 are displaced vertically under the action of the inclined rails and the vertical rails, and the pins on the two sides of the door cover 1 are displaced horizontally under the action of the inclined rails and the horizontal rails. In a preferred embodiment, the guide rails on both sides of the moving frame 2 are inclined at an angle of 45 degrees.

As shown in fig. 1 and 6, the locking mechanism 6 is released after the door 1 is moved to the proper position after opening, so as to restrict the door 1 from moving reversely. After the locking mechanism 6 is opened, one surface of the locking pin is an inclined surface and is locked under the pushing of the movable frame 2. The moving frame 2 is provided with a pin hole, so that after the door cover 1 is in place, the locking pin of the locking mechanism 6 is released to the pin hole after being opened. It should be noted that, since one surface of the locking pin of the locking mechanism 6 is an inclined surface after the door cover 1 is opened, the moving frame 2 can apply a downward force to the locking pin through the inclined surface to lock the locking pin, so that the moving frame 2 moves to place the door cover 1 in place, the locking pin is released to the pin hole of the moving frame 2 after the door cover 1 is placed in place, and the movement of the moving frame 2 is limited after the door cover 1 is placed in place.

In the description of the present invention, it is to be understood that the terms "central," "longitudinal," "lateral," "length," "width," "thickness," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "clockwise," "counterclockwise," "axial," "radial," "circumferential," and the like are used in the orientations and positional relationships indicated in the drawings for convenience in describing the invention and to simplify the description, and are not intended to indicate or imply that the referenced devices or elements must have a particular orientation, be constructed and operated in a particular orientation, and are therefore not to be considered limiting of the invention.

Furthermore, the terms "first", "second" and "first" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one such feature. In the description of the present invention, "a plurality" means at least two, e.g., two, three, etc., unless specifically limited otherwise.

In the present invention, unless otherwise expressly stated or limited, the terms "mounted," "connected," "secured," and the like are to be construed broadly and can, for example, be fixedly connected, detachably connected, or integrally formed; can be mechanically or electrically connected; they may be directly connected or indirectly connected through intervening media, or they may be connected internally or in any other suitable relationship, unless expressly stated otherwise. The specific meanings of the above terms in the present invention can be understood by those skilled in the art according to specific situations.

In the present invention, unless otherwise expressly stated or limited, the first feature "on" or "under" the second feature may be directly contacting the first and second features or indirectly contacting the first and second features through an intermediate. Also, a first feature "on," "over," and "above" a second feature may be directly or diagonally above the second feature, or may simply indicate that the first feature is at a higher level than the second feature. A first feature being "under," "below," and "beneath" a second feature may be directly under or obliquely under the first feature, or may simply mean that the first feature is at a lesser elevation than the second feature.

In the description herein, references to the description of the term "one embodiment," "some embodiments," "an example," "a specific example," or "some examples," etc., mean that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the invention. In this specification, the schematic representations of the terms used above are not necessarily intended to refer to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples. Furthermore, various embodiments or examples and features of different embodiments or examples described in this specification can be combined and combined by one skilled in the art without contradiction.

Although embodiments of the present invention have been shown and described above, it is understood that the above embodiments are exemplary and should not be construed as limiting the present invention, and that variations, modifications, substitutions and alterations can be made to the above embodiments by those of ordinary skill in the art within the scope of the present invention.

Claims

1. A pneumatic cabin body door cover opening mechanism comprises a door cover (1), a moving frame (2), a door opening cylinder assembly (3), a high-pressure gas cylinder (4), a front opening locking mechanism (5), a rear opening locking mechanism (6) and a gas circuit pipeline (7), and is characterized in that pins on two sides of the door cover (1) are connected to guide rails on two side surfaces of the moving frame (2); the moving frame (2) consists of two side surfaces and an end surface, and the end surface of the moving frame (2) is connected with a pull rod of the door opening cylinder assembly (3) through threads;

the locking mechanism (5) before opening and the locking mechanism (6) after opening are multi-stage cylinders, and locking or releasing is realized under the cooperation of springs;

the high-pressure gas bottle (4) inputs high-pressure gas to the front-opening locking mechanism (5) through a gas circuit pipeline (7), and the front-opening locking mechanism (5) overcomes the resistance of a spring to displace under the action of the high-pressure gas so as to enable cylindrical surfaces of different stages to be connected with the high-pressure gas;

the door opening cylinder assembly (3) exerts pulling force on the moving frame (2) through a pull rod under the action of high-pressure gas so as to enable the moving frame (2) and the door cover (1) to move;

and after the door cover (1) is opened, the locking mechanism (6) is released after the door cover (1) moves in place so as to limit the reverse movement of the door cover (1).

2. The cabin door cover opening mechanism according to claim 1, characterized in that the guide rails on two sides of the moving frame (2) are inclined rails, a horizontal rail and a vertical rail are arranged on the cabin, when the moving frame (2) is displaced horizontally, the pins on two sides of the door cover (1) are displaced vertically under the action of the inclined rails and the vertical rails, and the pins on two sides of the door cover (1) are displaced horizontally under the action of the inclined rails and the horizontal rails.

3. The mechanism for opening the door cover of the cabin body according to claim 2, characterized in that the inclination angle of the guide rails on the two sides of the moving frame (2) is 45 degrees.

4. The cabin door cover opening mechanism according to claim 1, characterized in that a sealing ring is arranged on the locking mechanism (5) before opening.

5. The cabin door cover opening mechanism according to claim 1, characterized in that one surface of the locking pin of the locking mechanism (6) after opening is an inclined surface and is locked by being pushed by the moving frame (2).

6. The cabin door cover opening mechanism according to claim 1, characterized in that a pin hole is arranged on the moving frame (2), so that after the door cover (1) is in place, the locking pin of the locking mechanism (6) after opening is released to the pin hole.