Multifunctional air-drop cabin door and control method thereof

Abstract

The invention belongs to the field of overall design of aircrafts, and particularly relates to a multifunctional air-drop cabin door and a control method thereof. The multifunctional air-drop cabin door comprises a cabin door body, the cabin door body is arranged on a rear fuselage of an aircraft, and a preset inclination angle is formed between the cabin door body and the horizontal plane when the cabin door body is in a closed state; and the cabin door opening module is used for controlling the cabin door to be opened, and the cabin door opening module comprises a folding control module, a flat opening control module and a side-by-side opening control module. Wherein the folding control module and the flat opening control module are mounted on the cabin door at the same time; or, the folding control module and the split control module are installed on the cabin door at the same time. The multifunctional door opening device has the characteristic of various door opening forms, and can be widely applied to cabin doors of air throwing aircrafts or other application scenes needing multifunctional door opening.

Description

Technical Field

[0001] The present application belongs to the field of overall aircraft design, and in particular relates to a multifunctional airdrop hatch and a control method thereof. Background Art

[0002] Generally, aircraft are equipped with doors for cargo or personnel to enter and exit the aircraft. For aircraft with airdrop function, the doors can be opened in the air to allow cargo to be airdropped or personnel to parachute. Traditional airdrop doors can generally only be opened in a specific opening mode designed for them, and their use is single. After opening, they have a significant impact on the aerodynamic characteristics of the aircraft.

[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. Summary of the invention

[0004] The purpose of the present application is to provide a multifunctional airdrop hatch and a control method thereof to solve at least one problem existing in the prior art.

[0005] The technical solution of this application is:

[0006] The first aspect of the present application provides a multifunctional airdrop hatch, comprising:

[0007] A cabin door, the cabin door being arranged on the rear fuselage of the aircraft, and having a predetermined inclination angle with a horizontal plane when the cabin door is in a closed state;

[0008] The hatch door opening module is used to control the hatch door opening, and the hatch door opening module includes a folding control module, a horizontal opening control module and a double opening control module, wherein:

[0009] The hatch is provided with the folding control module and the horizontal opening control module; or,

[0010] The folding control module and the opening control module are installed on the cabin door at the same time.

[0011] In at least one embodiment of the present application, the hatch comprises:

[0012] A hatch door panel, wherein the hatch door panel comprises a plurality of hatch door panels, and the hatch door panel comprises a door panel body and door panel rotating shafts arranged at both ends of the door panel body;

[0013] A foldable connector, wherein a slot is provided in the middle of the foldable connector and through holes are provided at both ends, and the through holes at both ends of the foldable connector are respectively hinged to the door panel rotating shafts of two adjacent door panels of the cabin door;

[0014] The hatch door frame is located outside the hatch door panel, and is provided with a slide groove for installing the folding control module, a through hole for installing the flat opening control module, and a groove for installing the split opening control module.

[0015] In at least one embodiment of the present application, reinforcing ribs are provided on the door panel body.

[0016] In at least one embodiment of the present application, the cabin door frame includes two door frame parts arranged in parallel, the inner sides of the two door frame parts are provided with the sliding groove, the outer sides are provided with the groove, and both ends of the two door frame parts are provided with the through holes.

[0017] In at least one embodiment of the present application, the folding control module includes:

[0018] A folding drive mechanism, the folding drive mechanism includes a buckle, a short connecting rod and a drive block, the buckle is fixedly installed in the slot of the folding connecting piece, one end of the drive block is connected to the buckle through the short connecting rod, and the other end is slidably installed in the slide groove of the cabin door frame, and the drive block can slide along the slide groove of the cabin door frame under the drive of the motor.

[0019] In at least one embodiment of the present application, the folding drive mechanisms are arranged at intervals, and the folding connectors that are not provided with the folding drive mechanisms move away from the closed state plane of the hatch during the folding process.

[0020] In at least one embodiment of the present application, the casement control module includes:

[0021] A horizontal opening rotating shaft, wherein the middle portion of the horizontal opening rotating shaft is mounted on the carrier, and both ends of the horizontal opening rotating shaft are mounted in the through holes of the door frame of the cabin door;

[0022] A horizontal opening drive mechanism, one end of which is connected to the carrier aircraft, and the other end of which is connected to the cabin door frame, is used to control the cabin door frame to rotate around the horizontal opening shaft, thereby driving the cabin door panel to open as a whole.

[0023] In at least one embodiment of the present application, the horizontal opening shaft is arranged at any end of the cabin door frame.

[0024] In at least one embodiment of the present application, the door panels are arranged in two rows in parallel, and a plurality of the door panels are arranged in each row.

[0025] In at least one embodiment of the present application, the split control module includes:

[0026] A split rotating shaft, both ends of which are mounted on the carrier, and a middle portion of which is nested in a groove of the door frame;

[0027] A split drive mechanism, one end of which is connected to the carrier aircraft, and the other end of which is connected to the cabin door frame, is used to control the cabin door frame to rotate around the split rotating shaft, thereby driving the cabin door panels to open symmetrically.

[0028] A second aspect of the present application provides a multifunctional airdrop hatch control method, based on the multifunctional airdrop hatch as described above, comprising:

[0029] When the hatch is equipped with a folding control module and a swing control module:

[0030] When the door is folded and opened, the driving block of the folding driving mechanism moves in the groove of the door frame on the side close to the door panel, driving the folding connecting piece fixed thereto to move. Under the action of the movement, the door panel rotating shaft at the end of the door panel rotates in the through holes at both ends of the folding connecting piece, driving the door panels on both sides to rotate around the door panel rotating shaft until the folding driving mechanism moves together, the adjacent door panels are tightly attached, and the door is folded and opened;

[0031] When the door is opened as a whole, the horizontal opening drive mechanism controls the door frame to rotate around the horizontal opening shaft, driving the door panel to open as a whole;

[0032] When both the folding control module and the opening control module are installed on the door:

[0033] When the door is folded and opened, the driving block of the folding driving mechanism moves in the groove of the door frame on the side close to the door panel, driving the folding connecting piece fixed thereto to move. Under the action of the movement, the door panel rotating shaft at the end of the door panel rotates in the through holes at both ends of the folding connecting piece, driving the door panels on both sides to rotate around the door panel rotating shaft until the folding driving mechanism moves together, the adjacent door panels are tightly attached, and the door is folded and opened;

[0034] When the door is opened symmetrically, the split drive mechanism controls the door frame to rotate around the split shaft, driving the two rows of door panels to open symmetrically.

[0035] The invention has at least the following beneficial technical effects:

[0036] The multifunctional airdrop hatch of the present application can realize three opening modes of the hatch: folding opening, overall opening, and symmetrical opening. The hatch can be installed with a folding control module and a flat opening control module, or a folding control module and a double-opening control module at the same time to meet different usage scenarios. BRIEF DESCRIPTION OF THE DRAWINGS

[0037] Figure 1 It is a schematic diagram of the assembly of a multifunctional airdrop hatch according to one embodiment of the present application;

[0038] Figure 2This is a schematic diagram of a folded open state of a multifunctional airdrop hatch according to an embodiment of the present application;

[0039] Figure 3 This is a schematic diagram of the overall opening state of the multifunctional airdrop hatch according to one embodiment of the present application;

[0040] Figure 4 This is a schematic diagram of a symmetrically opened state of a multifunctional airdrop hatch according to an embodiment of the present application;

[0041] Figure 5 This is a schematic diagram of a multifunctional airdrop hatch according to an embodiment of the present application;

[0042] Figure 6 is a schematic diagram of a multifunctional airdrop hatch according to another embodiment of the present application;

[0043] Figure 7 is a schematic diagram of a folding control module according to an embodiment of the present application;

[0044] Figure 8 It is a schematic diagram of the assembly of a folding connecting member and a folding driving mechanism according to one embodiment of the present application;

[0045] Fig. 9 It is a schematic diagram of the assembly of a folding drive mechanism, a door frame and a split rotating shaft according to one embodiment of the present application.

[0046] in:

[0047] 1-cabin door panel; 11-door panel shaft; 12-door panel body; 2-cabin door frame; 3-folding connector; 4-folding drive mechanism; 41-buckle; 42-short connecting rod; 43-driving block; 5-side opening shaft; 6-double opening shaft. DETAILED DESCRIPTION

[0048] 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.

[0049] 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.

[0050] The following is combined with Figures 1 to 9 This application is described in further detail.

[0051] The first aspect of the present application provides a multifunctional airdrop hatch, the multifunctional airdrop hatch comprising a hatch and a hatch opening module. Figure 1 As shown, the cabin door is arranged on the rear fuselage of the aircraft. When in the closed state, there is a predetermined inclination angle between the cabin door and the horizontal plane. The cabin door opening module is used to control the opening of the cabin door. The cabin door opening module includes a folding control module, a horizontal opening control module and a split opening control module. Figure 2 , the folding control module can control the folding and opening of the hatch; see Figure 3 , the horizontal opening control module can control the overall opening of the hatch; see Figure 4 The split control module can control the symmetrical opening of the door. The door is equipped with a folding control module and a flat opening control module; or the door is equipped with a folding control module and a split control module.

[0052] Specifically, Figure 5-9As shown, the cabin door includes: a cabin door panel 1, a folding connector 3 and a cabin door frame 2. The cabin door panel 1 includes multiple cabin door panels 1, including a door panel body 12 and a door panel rotation shaft 11 arranged at both ends of the door panel body 12. In this embodiment, the door panel body 12 preferably adopts a rectangular structure, on which two cross-arranged reinforcing ribs are installed; a card slot is provided in the middle of the folding connector 3, and the card slot is used to cooperate with the buckle 41 for connection, and through holes are provided at both ends of the folding connector 3. The through holes at both ends of the folding connector 3 are respectively hinged to the door panel rotation shafts 11 of two adjacent cabin door panels 1, thereby connecting multiple cabin door panels 1 into an integral cabin door; the cabin door frame 2 is located outside the cabin door panel 1, and the cabin door frame 2 is provided with a slide groove for installing a folding control module, a through hole for installing a flat opening control module, and a groove for installing a double opening control module. The door frame 2 includes two door frame parts arranged in parallel, the side of the two door frame parts close to the door panel 1 is the inner side, and the side away from the door panel 1 is the outer side. The inner sides of the two door frame parts are provided with a slide groove, the outer sides are provided with a circular groove, and both ends of the two door frame parts are provided with a circular through hole. The slide groove on the door frame 2 is used for the assembly of the driving block 43. In this embodiment, the slide groove preferably adopts a groove structure with a flange. The groove of the door frame 2 is used for the assembly of the split shaft 6, and the through hole of the door frame 2 is used for the assembly of the horizontal opening shaft 5.

[0053] In a preferred embodiment of the present application, the folding control module includes: a folding drive mechanism 4. The folding drive mechanism 4 includes a buckle 41, a short connecting rod 42 and a driving block 43. The buckle 41 is fixedly installed in the slot in the middle of the folding connector 3. One end of the driving block 43 is connected to the buckle 41 through the short connecting rod 42, and the other end is slidably installed in the slide groove of the cabin door frame 2. The driving block 43 can slide along the slide groove of the cabin door frame 2 under the drive of the motor, and the cabin door panel 1 is driven to fold by the movement of the folding drive mechanism 4 in the slide groove of the cabin door frame 2.

[0054] In this embodiment, the folding drive mechanisms 4 are arranged at intervals, and the folding connectors 3 without the folding drive mechanisms 4 move away from the closed state plane of the cabin door during the folding process.

[0055] In a preferred embodiment of the present application, the horizontal opening control module includes: a horizontal opening shaft 5 and a horizontal opening drive mechanism. The horizontal opening shaft 5 is installed on the carrier, and both ends of the horizontal opening shaft 5 are installed in the circular through holes of the cabin door frame 2; one end of the horizontal opening drive mechanism is connected to the carrier, and the other end is connected to the cabin door frame 2, which is used to control the cabin door frame 2 to rotate around the horizontal opening shaft 5, so as to drive the cabin door panel 1 to open as a whole; in this embodiment, the horizontal opening shaft 5 is set at any end of the cabin door frame 2.

[0056] In a preferred embodiment of the present application, the door panels 1 are arranged in two rows along the span direction, and each row is provided with a plurality of door panels 1 arranged along the axial direction, and two adjacent door panels 1 are connected together by a folding connector 3. The split control module includes: a split shaft 6 and a split drive mechanism. Both ends of the split shaft 6 are mounted on the carrier, and the split shaft 6 is nested in the groove of the door frame 2; one end of the split drive mechanism is connected to the carrier, and the other end is connected to the door frame 2, which is used to control the door frame 2 to rotate around the split shaft 6, driving the door panels 1 to open symmetrically.

[0057] Based on the above-mentioned multifunctional airdrop hatch, the second aspect of the present application provides a multifunctional airdrop hatch control method, including:

[0058] When the hatch is equipped with a folding control module and a swing control module:

[0059] When the door is folded and opened, the driving block 43 of the folding driving mechanism 4 moves in the groove of the door frame 2 on the side close to the door panel 1, driving the folding connecting member 3 fixed thereto to move, and under the action of the movement, the door panel rotation shaft 11 at the end of the door panel 1 rotates in the through holes at both ends of the folding connecting member 3, driving the door panels 1 on both sides to rotate around the door panel rotation shaft 11, until the folding driving mechanism 4 moves together, the adjacent door panels 1 are tightly attached, and the door is folded and opened;

[0060] When the hatch door is opened as a whole, the horizontal opening driving mechanism controls the hatch door frame 2 to rotate around the horizontal opening rotating shaft 5, driving the hatch door panel 1 to open as a whole;

[0061] When both the folding control module and the opening control module are installed on the door:

[0062] When the door is folded and opened, the driving block 43 of the folding driving mechanism 4 moves in the groove of the door frame 2 on the side close to the door panel 1, driving the folding connecting member 3 fixed thereto to move, and under the action of the movement, the door panel rotation shaft 11 at the end of the door panel 1 rotates in the through holes at both ends of the folding connecting member 3, driving the door panels 1 on both sides to rotate around the door panel rotation shaft 11, until the folding driving mechanism 4 moves together, the adjacent door panels 1 are tightly attached, and the door is folded and opened;

[0063] When the door is opened symmetrically, the split drive mechanism controls the door frame 2 to rotate around the split shaft 6, and drives the two rows of door panels 1 to open symmetrically.

[0064] The multifunctional airdrop hatch and its control method of the present application provide three opening modes: folding opening, overall opening, and symmetrical opening. The folding opening and overall opening modes can be integrated on the hatch at the same time, and the folding opening and symmetrical opening modes can also be integrated on the hatch at the same time. The opening mode will not cause interference, and is suitable for many application scenarios. After the hatch is opened, the aerodynamic characteristics of the aircraft are less affected.

[0065] The multifunctional airdrop hatch and control method of the present application can realize three opening modes of the hatch: folding opening, overall opening, and symmetrical opening, meeting different usage scenarios. The present application has the characteristics of various door opening forms and can be widely used in hatches of aerial delivery aircraft, or other application scenarios requiring multifunctional door opening.

[0066] 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 multifunctional airdrop hatch, characterized in that: include: A cabin door, the cabin door being arranged on the rear fuselage of the aircraft, and having a predetermined inclination angle with a horizontal plane when the cabin door is in a closed state; The hatch door opening module is used to control the hatch door opening, and the hatch door opening module includes a folding control module, a horizontal opening control module and a double opening control module, wherein: The hatch is provided with the folding control module and the horizontal opening control module; or, The folding control module and the opening control module are installed on the cabin door at the same time.

2. The multifunctional airdrop hatch according to claim 1, characterized in that: The hatch comprises: A hatch door panel (1), the hatch door panel (1) comprising a plurality of hatch door panels, the hatch door panel (1) comprising a door panel body (12) and door panel rotating shafts (11) arranged at two ends of the door panel body (12); A foldable connecting member (3), wherein a slot is provided in the middle of the foldable connecting member (3), and through holes are provided at both ends, and the through holes at both ends of the foldable connecting member (3) are respectively hinged to the door panel rotating shafts (11) of two adjacent cabin door panels (1); A hatch door frame (2), the hatch door frame (2) is located outside the hatch door panel (1), and the hatch door frame (2) is provided with a slide groove for installing the folding control module, a through hole for installing the flat opening control module, and a groove for installing the split opening control module.

3. The multifunctional airdrop hatch according to claim 2, characterized in that: The door panel main body (12) is provided with reinforcing ribs.

4. The multifunctional airdrop hatch according to claim 3, characterized in that: The cabin door frame (2) comprises two door frame parts arranged in parallel, the inner sides of the two door frame parts are provided with the sliding grooves, the outer sides are provided with the grooves, and both ends of the two door frame parts are provided with the through holes.

5. The multifunctional airdrop hatch according to claim 4, characterized in that: The folding control module comprises: A folding drive mechanism (4), the folding drive mechanism (4) comprising a buckle (41), a short connecting rod (42) and a driving block (43), the buckle (41) being fixedly mounted in a slot of the folding connecting member (3), one end of the driving block (43) being connected to the buckle (41) via the short connecting rod (42), and the other end of the driving block (43) being slidably mounted in a slide groove of the cabin door frame (2), and the driving block (43) being able to slide along the slide groove of the cabin door frame (2) under the drive of a motor.

6. The multifunctional airdrop hatch according to claim 5, characterized in that: The folding drive mechanisms (4) are arranged at intervals, and the folding connecting member (3) not provided with the folding drive mechanism (4) moves away from the closed state plane of the cabin door during the folding process.

7. The multifunctional airdrop hatch according to claim 6, characterized in that: The casement control module comprises: A horizontal opening rotating shaft (5), wherein the middle portion of the horizontal opening rotating shaft (5) is mounted on the carrier, and both ends of the horizontal opening rotating shaft (5) are mounted in through holes of the cabin door frame (2); A horizontal opening drive mechanism, one end of which is connected to the carrier aircraft, and the other end of which is connected to the cabin door frame (2), and is used to control the cabin door frame (2) to rotate around the horizontal opening shaft (5), thereby driving the cabin door panel (1) to open as a whole.

8. The multifunctional airdrop hatch according to claim 7, characterized in that: The horizontal opening rotating shaft (5) is arranged at any end of the cabin door frame (2).

9. The multifunctional airdrop hatch according to claim 6, characterized in that: The door panels (1) are arranged in two rows in parallel, with a plurality of the door panels (1) being arranged in each row.

10. The multifunctional airdrop hatch according to claim 9, characterized in that: The split control module comprises: A split rotating shaft (6), both ends of which are mounted on the carrier, and a middle portion of which is nested in a groove of the cabin door frame (2); A split-opening driving mechanism, one end of which is connected to the carrier aircraft, and the other end of which is connected to the cabin door frame (2), and is used to control the cabin door frame (2) to rotate around the split-opening rotating shaft (6), thereby driving the cabin door panel (1) to open symmetrically.

11. A multifunctional airdrop hatch control method, based on the multifunctional airdrop hatch according to claim 7 or 10, characterized in that: include: When the hatch is equipped with a folding control module and a swing control module: When the door is folded and opened, the driving block (43) of the folding driving mechanism (4) moves in a groove on the side of the door frame (2) close to the door panel (1), driving the folding connecting member (3) fixed thereto to move. Under the action of the movement, the door panel rotation shaft (11) at the end of the door panel (1) rotates in the through holes at both ends of the folding connecting member (3), driving the door panels (1) on both sides to rotate around the door panel rotation shaft (11), until the folding driving mechanism (4) moves together, the adjacent door panels (1) are tightly attached, and the door is folded and opened; When the hatch door is opened as a whole, the horizontal opening driving mechanism controls the hatch door frame (2) to rotate around the horizontal opening rotating shaft (5), thereby driving the hatch door panel (1) to open as a whole; When both the folding control module and the opening control module are installed on the door: When the door is folded and opened, the driving block (43) of the folding driving mechanism (4) moves in a groove on the side of the door frame (2) close to the door panel (1), driving the folding connecting member (3) fixed thereto to move. Under the action of the movement, the door panel rotation shaft (11) at the end of the door panel (1) rotates in the through holes at both ends of the folding connecting member (3), driving the door panels (1) on both sides to rotate around the door panel rotation shaft (11), until the folding driving mechanism (4) moves together, the adjacent door panels (1) are tightly attached, and the door is folded and opened; When the hatch door is opened symmetrically, the split-opening driving mechanism controls the hatch door frame (2) to rotate around the split-opening rotating shaft (6), thereby driving the two rows of hatch door panels (1) to open symmetrically.

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