Liftable sealed cabin door mechanism

Abstract

The utility model belongs to the field of aircraft cabin door mechanisms, and particularly relates to a liftable sealed cabin door mechanism. A sloping bench is arranged at the bottom of a machine body, and a groove is formed in the position, close to the machine body, of the sloping bench; the sealing cabin door is arranged on the fuselage in a closed state, the sealing cabin door is arranged on the sloping bench in an open state, a boss is arranged on the sealing cabin door, and the boss is inserted into the groove when the sealing cabin door is closed; the guide rail is arranged close to the inclined table, and the guide rail is provided with a linear section and an arc section; two ends of the transmission shaft are respectively provided with a roller carrier, the roller carriers are provided with rollers, the rollers are arranged in the guide rails, the transmission shaft is provided with a rocker arm, and the rocker arm is connected with the sealing cabin door; the driving connecting rods comprise the first driving connecting rod and the second driving connecting rod, one end of the first driving connecting rod is connected with the driving motor, and the other end of the first driving connecting rod is connected with the roller carrier through the second connecting rod.

Description

Technical Field

[0001] The present application belongs to the field of aircraft cabin door mechanisms, and in particular relates to a liftable sealed cabin door mechanism. Background Art

[0002] Transport aircraft are usually equipped with large sealed doors. In order to save structural weight and to keep cargo loading channels open as much as possible, transport aircraft in the world currently use multifunctional sealed doors. Among them, one type of aircraft sealed door acts as an airtight partition to ensure cargo hold pressurization in the closed state. The sealed door is opened upward during airdrop to provide an airdrop channel. When loading on the ground, it is opened downward to serve as an auxiliary cargo bridge. Because it needs to be flipped up and down, its structure is complex, resulting in a high failure rate. After flipping, it still cannot be completely flipped to the back of the fuselage, resulting in a smaller airdrop opening. Another type of transport aircraft sealed door movement form is fixed-axis rotation, which cannot be used for airdrops and airdrops. In the closed state, it acts as an airtight partition to ensure cargo hold pressurization. When loading on the ground, it is also opened downward to serve as a cargo loading channel.

[0003] Therefore, it is desired to have a technical solution to overcome or at least alleviate at least one of the above-mentioned defects of the prior art. Utility Model Content

[0004] The purpose of the present application is to provide a liftable sealed hatch mechanism to solve at least one problem existing in the prior art.

[0005] The technical solution of this application is:

[0006] A lifting and lowering sealed hatch mechanism, comprising:

[0007] An inclined platform, the inclined platform is arranged at the bottom of the fuselage, and a groove is arranged at a position of the inclined platform close to the fuselage;

[0008] A sealed cabin door, which is arranged on the fuselage when in a closed state and arranged on the inclined platform when in an open state, and a boss is arranged on the sealed cabin door, and when the sealed cabin door is closed, the boss is inserted into the groove;

[0009] A guide rail, the guide rail is arranged close to the ramp, and the guide rail has a straight line segment and a circular arc segment;

[0010] A transmission shaft, wherein roller frames are respectively installed at both ends of the transmission shaft, rollers are arranged on the roller frames, and the rollers are installed in the guide rails. A rocker arm is arranged on the transmission shaft, and the rocker arm is connected to the sealed cabin door;

[0011] The driving connecting rod comprises a first driving connecting rod and a second driving connecting rod, wherein one end of the first driving connecting rod is connected to the driving motor, and the other end is connected to the roller frame through the second connecting rod.

[0012] In at least one embodiment of the present application, a stop joint is installed on the fuselage, and a positioning portion is provided on the sealed cabin door. When the sealed cabin door is closed, the positioning portion is cooperatively connected with the stop joint.

[0013] In at least one embodiment of the present application, 9 grooves are arranged on the inclined platform, and 9 wedge-shaped bosses are correspondingly arranged on the sealed cabin door.

[0014] In at least one embodiment of the present application, 9 groups of rocker arms are arranged along the axis of the transmission shaft.

[0015] In at least one embodiment of the present application, the arc segment of the guide rail is at least a quarter of a circle.

[0016] In at least one embodiment of the present application, driven by the drive motor, the transmission shaft moves vertically upward along the straight section of the guide rail. When the roller frame at one end of the transmission shaft moves to the top of the guide rail, the roller frame at the other end of the transmission shaft moves along the circular arc section of the guide rail until the transmission shaft rotates 90° and the sealed cabin door reaches the closed position.

[0017] In at least one embodiment of the present application, the second movable link is connected to the roller frame at the lower end of the transmission shaft.

[0018] The utility model has at least the following beneficial technical effects:

[0019] The liftable sealed hatch mechanism of the present application drives the sealed hatch through a set of connecting rod mechanisms. When the hatch is closed upward, it can serve as an airtight partition to ensure cargo hold pressurization, and a cargo system can be installed on the back of the hatch. When the hatch is opened downward, it can serve as a ramp cargo floor for cargo loading. At the same time, in the initial stage of hatch opening and the end of hatch closing, the direction of hatch movement is to lift and lower in the vertical direction, which is beneficial to hatch sealing and gap control. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 It is a schematic diagram of a liftable sealed hatch mechanism in an open state of a sealed hatch according to an embodiment of the present application;

[0021] Figure 2 It is a schematic diagram of a liftable sealed hatch door mechanism in a translation state of a sealed hatch door according to an embodiment of the present application;

[0022] Figure 3 It is a schematic diagram of a liftable sealed hatch mechanism in a sealed hatch closed state according to an embodiment of the present application;

[0023] Figure 4 This is an axonometric diagram of a liftable sealed hatch mechanism according to one embodiment of the present application.

[0024] in:

[0025] 1- stop joint; 2- fuselage; 3- ramp; 4- sealed door; 5- rocker arm; 6- first driving link; 7- second moving link; 8- roller; 9- transmission shaft; 10- roller frame. DETAILED DESCRIPTION

[0026] In order to make the purpose, technical scheme and advantages of the implementation of this application clearer, the technical scheme in the embodiment of this application will be described in more detail below in conjunction with the drawings in the embodiment of this application. In the drawings, the same or similar reference numerals throughout represent the same or similar elements or elements with the same or similar functions. The described embodiments are part of the embodiments of this application, not all of them. The embodiments described below with reference to the drawings are exemplary and are intended to be used to explain this application, and should not be construed as limitations on this application. Based on the embodiments in this application, all other embodiments obtained by ordinary technicians in this field without making creative work are within the scope of protection of this application. The embodiments of this application are described in detail below in conjunction with the drawings.

[0027] In the description of the present application, it should be understood that the terms "center", "longitudinal", "lateral", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", etc., indicating orientations or positional relationships, are based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as limiting the scope of protection of the present application.

[0028] The following is combined with Figures 1 to 4 This application is described in further detail.

[0029] The present application provides a liftable sealed hatch mechanism, comprising: an inclined platform 3, a sealed hatch 4, a guide rail 11, a transmission shaft 9 and a driving connecting rod.

[0030] Specifically, Figure 1As shown, the ramp 3 is arranged at the bottom of the fuselage 2, and a groove for cooperating with the sealed cabin door 4 is arranged on the ramp 3 near the fuselage 2; when the sealed cabin door 4 is in the closed position, the sealed cabin door 4 is located on the fuselage 2, and a boss is arranged on the sealed cabin door 4, and when the sealed cabin door 4 is closed, the boss is inserted into the groove of the ramp 3; when the sealed cabin door 4 is in the open position, the sealed cabin door 4 is located on the ramp 3. The guide rail 11 is arranged near the ramp 3, and the guide rail 11 has a straight line segment and a circular arc segment. A group of roller frames 10 are respectively installed at both ends of the transmission shaft 9, and rollers 8 are arranged on the roller frames 10. The rollers 8 are installed in the guide rails 11, and the rollers 8 can move along the track on the guide rails 11 under the action of the driving force; in addition, a rocker arm 5 is arranged on the transmission shaft 9, and the rocker arm 5 is connected to the sealed cabin door 4; the driving connecting rod includes a first driving connecting rod 6 and a second moving connecting rod 7, one end of the first driving connecting rod 6 is connected to the driving motor, and the other end is connected to the roller frame 10 through the second connecting rod 7, and the roller frame 10 is driven to move along the guide rail 11 through the driving connecting rod.

[0031] In a preferred embodiment of the present application, a plurality of stop joints 1 are fixedly mounted on the fuselage 2, and a positioning portion is provided on the sealed cabin door 4. When the sealed cabin door 4 is closed, the positioning portion is cooperated and connected with the stop joint 1 to transfer the airtight load on the sealed cabin door 4.

[0032] In this embodiment, 9 grooves are arranged on the ramp 3, and 9 wedge-shaped bosses are correspondingly arranged on the sealed hatch 4. When the sealed hatch 4 is closed, the wedge-shaped bosses at the ends of the sealed hatch 4 will be inserted into the corresponding grooves of the ramp 3, transferring the airtight load to the ramp 3.

[0033] In a preferred embodiment of the present application, 9 groups of rocker arms 5 are distributed along the axis of the transmission shaft 9, and one end of the 9 groups of rocker arms 5 is fastened to the sealing door 4 by bolts, and the other end is fastened to the transmission shaft 9, thereby achieving a reliable connection between the sealing door 4 and the transmission shaft 9.

[0034] In a preferred embodiment of the present application, the arc segment of the guide rail 11 is at least a quarter arc, ensuring that the sealed cabin door 4 can be closed or opened in place.

[0035] The liftable sealed hatch mechanism of the present application, under the drive of the drive motor, drives the drive connecting rod to drive the transmission shaft 9 to move vertically upward along the straight section of the guide rail 11. When the roller frame 10 at one end of the transmission shaft 9 moves to the top of the guide rail 11, the roller frame 10 at the other end of the transmission shaft 9 moves along the arc section of the guide rail 11 until the transmission shaft 9 rotates 90° and the sealed hatch 4 reaches the closed position. The opening process is reversed. In this embodiment, the second movable connecting rod 7 is connected to the roller frame 10 at the lower end of the transmission shaft 9.

[0036] The liftable sealed door mechanism of the present application drives the sealed door 4 through a set of connecting rod mechanism in cooperation with rollers 8, guide rails 11, etc. Figure 3As shown, when the hatch is closed upward, it can serve as an airtight partition to ensure cargo hold pressurization, and a cargo system can be installed on the back of the hatch; Figure 4 As shown in FIG. 1 , when the hatch door is opened downward, it can serve as a ramp cargo floor for cargo loading; at the same time, at the initial stage of hatch door opening and the end of hatch door closing, as shown in FIG. Figure 2 As shown, the door moves in a vertical direction, which is beneficial to the door sealing and gap control.

[0037] The above is only a specific implementation of the present application, but the protection scope of the present application is not limited thereto. Any changes or substitutions that can be easily thought of by a person skilled in the art within the technical scope disclosed in the present application should be included in the protection scope of the present application. Therefore, the protection scope of the present application shall be based on the protection scope of the claims.

Claims

1. A liftable sealed hatch mechanism, characterized in that: include: An inclined platform (3), the inclined platform (3) being arranged at the bottom of the fuselage (2), and a groove being arranged at a position of the inclined platform (3) close to the fuselage (2); A sealed cabin door (4), which is arranged on the fuselage (2) when in a closed state, and is arranged on the inclined platform (3) when in an open state, and a boss is arranged on the sealed cabin door (4), and when the sealed cabin door (4) is closed, the boss is inserted into the groove; A guide rail (11), the guide rail (11) being arranged close to the ramp (3), the guide rail (11) having a straight line segment and a circular arc segment; A transmission shaft (9), wherein roller frames (10) are respectively installed at both ends of the transmission shaft (9), a roller (8) is arranged on the roller frame (10), and the roller (8) is installed in the guide rail (11); a rocker arm (5) is arranged on the transmission shaft (9), and the rocker arm (5) is connected to the sealed cabin door (4); The driving connecting rod comprises a first driving connecting rod (6) and a second moving connecting rod (7); one end of the first driving connecting rod (6) is connected to the driving motor, and the other end is connected to the roller frame (10) through the second moving connecting rod (7).

2. The liftable sealed hatch mechanism according to claim 1, characterized in that: A stop joint (1) is installed on the fuselage (2), and a positioning portion is provided on the sealed cabin door (4); when the sealed cabin door (4) is closed, the positioning portion is matched and connected with the stop joint (1).

3. The liftable sealed hatch mechanism according to claim 1, characterized in that: The inclined platform (3) is provided with 9 grooves, and the sealed cabin door (4) is correspondingly provided with 9 wedge-shaped bosses.

4. The liftable sealed hatch mechanism according to claim 1, characterized in that: Nine groups of rocker arms (5) are arranged on the transmission shaft (9) along the axis.

5. The liftable sealed hatch mechanism according to claim 1, characterized in that: The circular arc section of the guide rail (11) is at least a quarter of a circular arc.

6. The liftable sealed hatch mechanism according to claim 5, characterized in that: Driven by the drive motor, the transmission shaft (9) moves vertically upward along the straight section of the guide rail (11); when the roller frame (10) at one end of the transmission shaft (9) moves to the top of the guide rail (11), the roller frame (10) at the other end of the transmission shaft (9) moves along the circular arc section of the guide rail (11) until the transmission shaft (9) rotates 90° and the sealed cabin door (4) reaches the closed position.

7. The liftable sealed hatch mechanism according to claim 6, characterized in that: The second movable connecting rod (7) is connected to the roller frame (10) at the lower end of the transmission shaft (9).

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