An aircraft water escape hatch unlocking and locking mechanism and method

Abstract

This invention discloses an aircraft water-dropping compartment door unlocking and locking mechanism for locking and unlocking the water-dropping compartment door. Specifically, it includes a latch joint and a latch groove. The latch joint is fixed to one side of the water-dropping compartment door, and the latch groove is rotatably installed on one side of the water-dropping compartment door frame. The latch groove can engage with the latch joint. A drive device is installed inside the aircraft door frame to control the rotation of the latch groove. The drive device directly drives the latch groove and latch joint to lock and unlock, making installation convenient and effectively avoiding the influence of the pull rod structure on the water-dropping compartment door. After the latch joint is unlocked by the latch groove, the water-dropping compartment door can be quickly opened under the gravity of the extinguishing medium, enabling timely release of the extinguishing medium. Furthermore, the direct-drive method using the drive device results in a simple structure, stable transmission, and effectively avoids the problem of poor reliability caused by a single point failure leading to the failure of the entire function when using a pull rod structure.

Description

Technical Field

[0001] This invention belongs to the technical field of aircraft water-dropping lock structure, and is used to realize the unlocking and locking function of the water-dropping compartment door. In particular, it relates to an unlocking and locking mechanism and method for an aircraft water-dropping compartment door. Background Technology

[0002] Forest fires are characterized by their suddenness, destructiveness, and high risk. They are among the most frequent, difficult to manage, and devastating natural disasters globally, causing immeasurable damage to the global environment and economy. Therefore, forest fire prevention and suppression have become a global focus. To meet the urgent need for aerial forest firefighting equipment, it is necessary to conduct forest fire suppression missions by releasing extinguishing agents from aircraft in the air. To ensure that the extinguishing agents are accurately delivered to the target area as planned, appropriate discharge channels need to be established to ensure that the extinguishing agents are effectively stored on the aircraft before release and can be rapidly discharged when needed.

[0003] The discharge channel for fire extinguishing agents is typically functioned by a water-dropping hatch. Before discharge, the hatch is effectively locked; during discharge, it is quickly unlocked and opened; after discharge, the hatch is closed again to minimize the impact of airflow on aircraft control. Currently, the most common unlocking and locking mechanism uses a lever assembly for actuation. However, lever assembly is prone to failure due to the possibility of a single component failure causing the entire mechanism to malfunction, resulting in poor reliability. Therefore, improving the unlocking and locking reliability of aircraft water-dropping hatches is imperative. Summary of the Invention

[0004] The purpose of this invention is to provide an unlocking and locking mechanism and method for aircraft water-dropping compartment doors, so as to overcome the problem of poor reliability in the prior art that uses a lever assembly for transmission, where the failure of a single point in a component of the lever assembly leads to the failure of the entire function.

[0005] To achieve the above objectives, the technical solution adopted by the present invention is as follows:

[0006] An aircraft water-dropping compartment door unlocking and locking mechanism is provided for locking and unlocking the water-dropping compartment door. It includes a door latch joint and a door latch groove. The door latch joint is fixed to one side of the water-dropping compartment door, and the door latch groove is rotatably installed on one side of the water-dropping compartment door frame. The door latch groove can engage with the door latch joint. A drive device for controlling the rotation of the door latch groove is installed inside the aircraft door frame.

[0007] Preferably, one end of the latch groove and the latch connector is an open semi-ring structure, and the opening of the latch groove is larger than the diameter of the latch connector.

[0008] Preferably, one end of the opening of the latch groove is provided with an outward curved surface, and the end of the outward curved surface is far away from the rotation center of the latch groove.

[0009] Preferably, the driving device is a motor, which is fixed to one side of the water gate frame, and the output shaft of the motor is fixedly connected to the door latch groove.

[0010] Preferably, the drive device includes a drive motor, a worm shaft, and a worm wheel. The worm wheel is connected to the latch slot via a linkage shaft. The worm wheel is fixed to the other side of the floodgate frame via a support bracket. The linkage shaft connecting the worm wheel and the latch slot passes through the side wall of the floodgate frame. The drive motor is fixed to the other side of the floodgate frame. One end of the worm shaft is fixedly connected to the output shaft of the drive motor. The worm shaft meshes with the worm wheel.

[0011] Preferably, one side of the water-dropping chamber door is provided with multiple latch joints, and one side of the water-dropping door frame is provided with multiple latch grooves that cooperate with and lock into the multiple latch joints on the water-dropping chamber door.

[0012] Preferably, the worm shaft is fixed to the other side of the floodgate frame by a bearing housing, and the bearing housing is provided with a bearing for supporting the rotation of the worm shaft.

[0013] Preferably, the worm shaft that meshes with multiple worm gears is coaxially connected and driven by the same drive motor.

[0014] Preferably, a locking drive device is provided on one side of the water-dropping hatch, and a connecting part is provided at the end of the rotatable connection between the water-dropping hatch and the lower surface of the fuselage, and the output end of the locking drive device can engage with the connecting part.

[0015] A method for unlocking and locking an aircraft water-dropping compartment door based on an unlocking and locking mechanism includes the following steps:

[0016] In the initial state, the latch joint is locked using the latch groove. When it is necessary to open the water drop chamber door, the latch groove is rotated using the drive device to unlock the latch joint. The latch joint opens under the action of gravity along with the water drop chamber door. After the water drop is released, the water drop chamber door is rotated to allow the latch joint to enter the opening of the latch groove. The drive device is then used to drive the latch groove to rotate in the opposite direction to lock the latch joint, thus completing the entire process of opening and closing the water drop chamber door.

[0017] Compared with the prior art, the present invention has the following beneficial technical effects:

[0018] This invention provides an aircraft water-dropping compartment door unlocking and locking mechanism for locking and unlocking the water-dropping compartment door. Specifically, it includes a latch joint and a latch groove. The latch joint is fixed to one side of the water-dropping compartment door, and the latch groove is rotatably installed on one side of the water-dropping compartment door frame. The latch groove can engage with the latch joint. A drive device is installed inside the aircraft door frame to control the rotation of the latch groove. The drive device directly drives the latch groove and latch joint to lock and unlock, making installation convenient and effectively avoiding the influence of the pull rod structure on the water-dropping compartment door. After the latch joint is unlocked by the latch groove, the water-dropping compartment door can be quickly opened under the gravity of the extinguishing medium, enabling timely release of the extinguishing medium. Furthermore, the direct-drive method using the drive device results in a simple structure, stable transmission, and effectively avoids the problem of poor reliability caused by a single point failure leading to the failure of the entire function when using a pull rod structure.

[0019] Preferably, one end of the latch groove and the latch connector is an open semi-ring structure, the opening of the latch groove is larger than the diameter of the latch connector, and the open clamping structure is adopted. The connection structure is simple and can avoid the problem of locking mechanism failure caused by the gravity of the floodgate. Relying on the ring structure of the latch groove for limiting, it can withstand greater pressure.

[0020] Preferably, one end of the opening of the latch groove is provided with an outward curved surface. The end of the outward curved surface is far away from the rotation center of the latch groove, which is conducive to the latch joint entering the opening of the latch groove. At the same time, the outward curved surface of the latch groove can gradually press the latch joint, ensuring the sealing of the floodgate.

[0021] Preferably, the worm shaft that meshes with multiple worm gears is coaxially connected and driven by the same drive motor to ensure the synchronicity of the opening and closing of multiple latch slots and prevent jamming caused by incomplete opening of a single latch slot. Attached Figure Description

[0022] Figure 1 This is a schematic diagram of the installation and use of the aircraft water-dropping hatch unlocking and locking mechanism in an embodiment of the present invention.

[0023] Figure 2 This is a schematic diagram of the latch joint and latch groove locking structure in an embodiment of the present invention.

[0024] Figure 3 This is a schematic diagram of the drive device structure in an embodiment of the present invention.

[0025] Figure 4 This is a schematic diagram of the latch groove being installed and fitted with a worm gear through a worm shaft in an embodiment of the present invention.

[0026] Figure 5 This is a schematic diagram of the specific connection structure of the driving device in an embodiment of the present invention.

[0027] Figure 6This is a schematic diagram of the end structure of the latch groove in an embodiment of the present invention.

[0028] In the diagram: 1. Water-dropping hatch; 2. Water-dropping hatch frame; 3. Outer curved surface; 4. Drive device; 5. Door latch joint; 6. Door latch groove; 7. Worm shaft; 8. Worm wheel; 9. Support bracket; 10. Bearing housing; 11. Support linkage shaft; 12. Linkage bearing housing. Detailed Implementation

[0029] To enable those skilled in the art to better understand the present invention, the technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present invention. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort should fall within the scope of protection of the present invention.

[0030] It should be noted that the terms "first," "second," etc., in the specification, claims, and accompanying drawings of this invention are used to distinguish similar objects and are not necessarily used to describe a specific order or sequence. It should be understood that such data can be interchanged where appropriate so that the embodiments of the invention described herein can be implemented in orders other than those illustrated or described herein. Furthermore, the terms "comprising" and "having," and any variations thereof, are intended to cover a non-exclusive inclusion; for example, a process, method, system, product, or apparatus that comprises a series of steps or units is not necessarily limited to those steps or units explicitly listed, but may include other steps or units not explicitly listed or inherent to such processes, methods, products, or apparatus.

[0031] like Figure 1As shown, this invention provides an aircraft water-dropping compartment door unlocking and locking mechanism for locking and unlocking the water-dropping compartment door 1. The water-dropping compartment door 1 is located on the lower surface of the aircraft fuselage. A water-dropping door frame 2 cooperates with it to seal the water-dropping compartment. The water-dropping compartment door 1 is rotatably mounted on one side of the water-dropping door frame 2. The water-dropping compartment door 1 is used to close and open the fire extinguishing agent dispensing channel. Before the fire extinguishing agent is dispensed, the water-dropping compartment door 1 is effectively locked to the water-dropping door frame 2. During dispensing, the water-dropping compartment door 1 is quickly unlocked and opened. After dispensing, the water-dropping compartment door 1 is retracted and the locked door is closed again to reduce the impact of airflow on aircraft handling. Specifically, the aircraft water-dropping compartment door unlocking and locking mechanism in this application includes a door latch joint. 5 and latch slot 6, latch joint 5 is fixed to one side of water-dropping door 1, latch slot 6 is rotatably installed on one side of water-dropping door frame 2, latch slot 6 can engage with latch joint 5, a drive device 4 for controlling the rotation of latch slot 6 is installed in the aircraft door frame 2, the drive device 4 directly drives the latch slot 6 and latch joint 5 to lock and unlock, which is convenient to install and can effectively avoid the influence of the pull rod structure on water-dropping door 1. After the latch joint 5 is unlocked by latch slot 6, water-dropping door 1 can be quickly opened under the gravity of fire extinguishing medium to realize the timely release of fire extinguishing medium. Moreover, the drive device 4 is used for direct drive, which is simple in structure and stable in transmission.

[0032] like Figure 1 As shown, the water-dropping hatch 1 is rotatably mounted on one side of the water-dropping door frame 2. Rotating the water-dropping hatch 1 can seal the passage of the extinguishing medium. The water-dropping hatch 1 can be automatically opened under gravity. A locking drive device is provided on one side of the water-dropping hatch 1. A connecting part is provided at the end of the water-dropping hatch 1 where it rotates to connect with the lower surface of the fuselage. The output end of the locking drive device can engage with the connecting part. The locking drive device drives the water-dropping hatch 1 to rotate and close. After closing, the output end of the locking drive device is separated from the connecting part to prevent the connecting part from rotating with the water-dropping hatch 1 during deployment, which could easily damage the locking drive device.

[0033] In a specific embodiment of this application, the locking drive device is specifically driven by a motor, which is fixedly installed on the lower surface of the fuselage. The output shaft of the motor is provided with a magnetic gear, and the connecting part at the end of the water-dropping hatch 1 and the rotatable connection of the lower surface of the fuselage is a driven gear. The magnetic gear on the output shaft of the motor can mesh with the driven gear under the action of magnetic force, and then the motor drives the water-dropping hatch 1 to rotate synchronously.

[0034] In another embodiment of this application, a lifting ring is provided inside the water-dropping chamber door 1. One end of a lifting rope is fixed to the lifting ring, and the other end of the lifting rope is fixed by a crane. The crane is used to lift the water-dropping chamber door 1 to achieve the purpose of rotating and closing the water-dropping chamber door 1.

[0035] In a specific embodiment of this application, one end of the latch groove 6 and the latch connector 5 is an open semi-ring structure, such as... Figure 2 , Figure 4 , Figure 6 As shown, the opening of the latch groove 6 is larger than the diameter of the latch connector 5. When the opening end of the latch groove 6 is rotated downward, the latch connector 5 falls freely from the opening end of the latch groove 6, thereby opening the water tank door 1. When it is necessary to close, the water tank door 1 is rotated so that the latch connector 5 is located in the opening of the latch groove 6. Then, the latch groove 6 is rotated by the drive device 4, and the latch groove 6 is used to limit the latch connector 5.

[0036] In the specific embodiments of this application, such as Figure 6 As shown, one end of the opening of the latch groove 6 is provided with an outer curved surface 3. The end of the outer curved surface 3 is far away from the rotation center of the latch groove 6. Utilizing the structural design of the outer curved surface 3, when the latch joint 5 enters the opening of the latch groove 6, the outer curved surface 3 initially contacts the latch joint 5. Then, the latch groove 6 is rotated, and the semi-ring structure limits the latch joint 5, driving the latch joint 5 closer to the rotation center of the latch groove 6, thereby achieving the function of pressing the latch joint 5 and ensuring the sealing of the water tank door 1 after locking.

[0037] To effectively lock and unlock the water-dropping hatch 1, this application provides an unlocking and locking mechanism between one side of the water-dropping hatch 1 and the water-dropping hatch frame 2. A drive device 4 directly drives the latch groove 6 to the latch connector 5 to achieve locking and unlocking functions. The structure is simple, and the latch groove 6 and latch connector 5 are independently set on the water-dropping hatch frame 2 and the water-dropping hatch 1, resulting in high control precision. During the opening of the water-dropping hatch 1, there is absolutely no interference with the latch groove 6 and latch connector 5. In a specific embodiment of this application, the drive device 4 adopts a direct-drive motor structure, with the latch groove 6 fixed to the output end of the motor. The latch groove 6 can rotate synchronously with the output end of the motor. This structure is suitable for small fire-fighting equipment; it is simple in structure and convenient to control.

[0038] In another embodiment of this application, in order to ensure the stability of the water-dropping hatch 1 in the locked state, a plurality of latch joints 5 are provided on one side of the water-dropping hatch 1, and a plurality of latch grooves 6 are provided on one side of the water-dropping door frame 2 to cooperate with and lock the plurality of latch joints 5 on one side of the water-dropping hatch 1; each latch groove 6 corresponds to locking one latch joint 5.

[0039] In another embodiment of this application, such as Figure 3 , Figure 5As shown, the drive device 4 includes a drive motor, a worm shaft 7, and a worm wheel 8. The worm wheel 8 is connected to the latch groove 6 via a linkage shaft 11. The worm wheel 8 is fixed to the other side of the floodgate frame 2 via a support bracket 9. The linkage shaft 11 connecting the worm wheel 8 and the latch groove 6 passes through the side wall of the floodgate frame 2. The drive motor is fixed to the other side of the floodgate frame 2. One end of the worm shaft 7 is fixedly connected to the output shaft of the drive motor. The worm shaft 7 meshes with the worm wheel 8. Under the action of the drive motor, the worm shaft 7 is driven to rotate, thereby driving the worm wheel. 8 rotates, driving the bolt groove 6 to rotate, thereby realizing the locking and opening / closing of the bolt groove 6 and the bolt connector 5; in the specific embodiment of this application, in order to ensure the precise control of the bolt groove 6 on the bolt connector 5, the rotation axis of the bolt groove 6 is perpendicular to the door frame 1; the bolt connector 5 is fixed on the water tank door 1, and when the water tank door 1 is locked, the bolt groove 6 forms a limiting support for the bolt connector 5; a linkage bearing seat 12 is provided on the water tank door frame 2, and a bearing for supporting the linkage shaft 11 is provided inside the linkage bearing seat 12.

[0040] In a specific embodiment of this application, the drive motor and the end of the worm shaft 7 are connected by a spline. The spline connection makes the force more uniform and effectively improves the load-bearing capacity of the connection, enabling the spline connection to withstand larger loads.

[0041] In the specific embodiments of this application, such as Figure 4 As shown, the linkage bearing seat 12 is provided with connecting ears, and the connecting ears on the linkage bearing seat 12 are provided with mounting holes. The linkage bearing seat 12 is fixed to the water gate frame 2 by bolts engaging with the bolt holes on the connecting ears. The bolt connection structure is used for fixed installation, which is simple and applicable to the installation of existing water gates; no major adjustments are required; or the linkage bearing seat 12 is integrally formed on the water gate frame 2. In the early stage of the preparation and molding process, according to the specifications of the water gate 1, a set number of linkage bearing seats 12 are reserved on the water gate frame 2. Then, when the water gate 1 is rotated and installed on the lower part of the fuselage, the position of the latch joint 5 installed on the water gate 1 is calibrated and fixed after installation; this improves the installation accuracy and ensures the stability of the overall structure.

[0042] The worm shaft 7 is fixed to the other side of the floodgate frame 2 via a bearing seat 10. One end of the worm shaft 7 is connected to a drive motor. Under the drive of the drive motor, the worm shaft 7 can rotate on a fixed axis, thereby driving the worm wheel 8 to rotate on a fixed axis. The latch groove 6 is fixedly connected to the worm wheel 8. Under the drive of the worm wheel 8, the latch groove 6 also rotates on its own axis. The bearing seat 10 is provided with a bearing for supporting the rotation of the worm shaft 7.

[0043] like Figure 1As shown, multiple latch slots 6 are provided on one side of the water-feeding gate frame 2, which are locked in conjunction with multiple latch joints 5 on one side of the water-feeding chamber door 1. Each latch slot 6 is connected to a worm gear 8, and a worm shaft 7 that meshes with the multiple worm gears 8 is coaxially connected, or a single worm shaft 7 is used, with multiple meshing teeth on the same worm shaft 7 that mesh with the worm gears 8; this ensures the synchronicity of the opening and closing of the multiple latch slots 6. To ensure the stability of the rotational support of the worm shaft 7, a bearing seat 10 is provided between two adjacent worm gears 8, and multiple bearing seats 10 are used to support the worm shaft 7 to ensure the structural stability of the worm shaft 7.

[0044] like Figure 3 As shown, the support 9 includes a rotating support and two fixed supports. The two fixed supports are respectively located on both sides of the worm gear 8. The end of the worm gear 8 is fixed to the rotating support by bearings. The rotating support is fixed between the two fixed supports by bolts or fasteners. The worm gear 8 is a transmission component for the rotation of the latch groove 6, and its transmission stability plays a key role in the opening and closing of the floodgate 1. Therefore, using two fixed supports and a rotating support to support it ensures the stability of the worm gear 8 support structure and facilitates the maintenance and repair of the overall structure.

[0045] In this invention, a worm gear mechanism can replace the traditional tie rod assembly as the drive connection component, effectively improving the reliability of the mechanism. Furthermore, by selecting a suitable lead angle when designing the worm shaft 7, reverse self-locking of the mechanism can be achieved; that is, the worm gear 8 can only be driven by the worm shaft 7, and vice versa. This effectively prevents the load on the latch joint 5 to the latch groove 6 from reversing and causing the latch groove 6 to rotate, thus avoiding the malfunction of the hatch unexpectedly unlocking when the power source fails.

[0046] In one embodiment of this application, a method for unlocking and locking an aircraft water tank door is provided, based on the aforementioned aircraft water tank door unlocking and locking mechanism, specifically including the following steps:

[0047] In the initial state, the latch joint 5 is locked using the latch groove 6. When it is necessary to open the water drop chamber door 1, the latch groove 6 is rotated using the drive device 4 to unlock the latch joint 5. The latch joint 5 opens under the action of gravity along with the water drop chamber door 1. After the water drop is released, the water drop chamber door 1 is rotated to allow the latch joint 5 to enter the opening of the latch groove 6. The drive device 4 is then used to drive the latch groove 6 to rotate in the opposite direction to lock the latch joint 5, thus completing the entire process of opening and closing the water drop chamber door 1.

[0048] In the specific embodiment of this application, the controller is used to control the drive device 4. The rotation control of the latch slot 6 by the drive device 4 is calibrated in advance. When the latch slot 6 is rotated by the drive device 4 to unlock the latch connector 5, the rotation angle of the latch slot 6 is a fixed value. Similarly, when the latch slot 6 is rotated by the drive device 4 to lock the latch connector 5, the rotation angle of the latch slot 6 is also a fixed value.

[0049] The latch slot 6 is controlled by a worm shaft 7 and a worm wheel 8. The rotation angle of the drive motor is determined according to the meshing transmission ratio of the worm shaft 7 and the worm wheel 8. The drive motor drives the worm shaft 7 to rotate, which can precisely control the rotation angle of the worm wheel 8 and prevent the worm wheel 8 from flipping over, thus ensuring the stability of the latch joint 5 locking. It can also ensure that the mechanism can self-lock when the lead angle of the worm is less than the equivalent friction angle of the meshing surface in the event of power source failure.

[0050] This invention provides an unlocking and locking mechanism for an aircraft water tank door. When the water tank door 1 is locked, the latch groove 6 is in a supporting position against the latch joint 5, locking the water tank door 1 in a closed state. When it is necessary to open the water tank door 1, under the drive of the drive device 4, the worm shaft 7 rotates clockwise around its own axis, driving the worm wheel 8 to rotate clockwise around its own axis, which in turn drives the latch groove 6, which is fixed to the worm wheel 8, to rotate clockwise around its fixed axis until the latch groove 6 is in a free position relative to the latch joint 5. The latch joint 5 and the water tank door 1 then open downwards under the action of gravity. The locking mechanism driven by the worm wheel and worm has a simple and reliable motion relationship and a clear force transmission path. Through structural optimization, the goal of reducing aircraft weight is achieved.

[0051] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention and not to limit it. Although the present invention has been described in detail with reference to the above embodiments, those skilled in the art should understand that modifications or equivalent substitutions can still be made to the specific implementation of the present invention. Any modifications or equivalent substitutions that do not depart from the spirit and scope of the present invention should be covered within the scope of protection of the claims of the present invention.

Claims

1. A mechanism for unlocking and locking an aircraft water-dropping hatch, used for locking and unlocking the water-dropping hatch (1), characterized in that, Includes a latch connector (5) and a latch groove (6). The latch connector (5) is fixed to one side of the water-dropping door (1). The latch groove (6) is rotatably installed on one side of the water-dropping door frame (2). The latch groove (6) can engage with the latch connector (5). A drive device (4) for controlling the rotation of the latch groove (6) is installed inside the aircraft door frame (2). A locking drive device is provided on one side of the water-dropping door (1). A connecting part is provided at the end of the rotating connection between the water-dropping door (1) and the lower surface of the fuselage. The output end of the locking drive device can engage with the connecting part. When the closure is completed, the output end of the locking drive device is separated from the connecting part to prevent the connecting part from rotating with the water-dropping door (1) and causing the output end of the locking drive device to rotate together during the deployment.

2. The aircraft water-dropping compartment door unlocking and locking mechanism according to claim 1, characterized in that, The latch groove (6) and the latch connector (5) are open semi-ring structures at one end, and the opening of the latch groove (6) is larger than the diameter of the latch connector (5).

3. The aircraft water-dropping compartment door unlocking and locking mechanism according to claim 2, characterized in that, One end of the opening of the latch groove (6) is provided with an outer curved surface (3), and the end of the outer curved surface (3) is far away from the rotation center of the latch groove (6).

4. The aircraft water-dropping compartment door unlocking and locking mechanism according to claim 1, characterized in that, The drive device (4) uses a motor, which is fixed on one side of the water gate frame (2), and the output shaft of the motor is fixedly connected to the door latch groove (6).

5. The aircraft water-dropping compartment door unlocking and locking mechanism according to claim 1, characterized in that, The drive device (4) includes a drive motor, a worm shaft (7) and a worm wheel (8). The worm wheel (8) is connected to the latch groove (6) via a linkage shaft (11). The worm wheel (8) is fixed to the other side of the floodgate frame (2) via a support bracket (9). The linkage shaft (11) connecting the worm wheel (8) and the latch groove (6) passes through the side wall of the floodgate frame (2). The drive motor is fixed to the other side of the floodgate frame (2). One end of the worm shaft (7) is fixedly connected to the output shaft of the drive motor. The worm shaft (7) meshes with the worm wheel (8).

6. The aircraft water-dropping compartment door unlocking and locking mechanism according to claim 5, characterized in that, Multiple latch joints (5) are provided on one side of the water-dropping chamber door (1), and multiple latch grooves (6) are provided on one side of the water-dropping door frame (2) to cooperate with and lock with the multiple latch joints (5) on the water-dropping chamber door (1).

7. The aircraft water-dropping compartment door unlocking and locking mechanism according to claim 5, characterized in that, The worm shaft (7) is fixed to the other side of the water gate frame (2) by a bearing seat (10), and a bearing for supporting the rotation of the worm shaft (7) is provided in the bearing seat (10).

8. The aircraft water-dropping compartment door unlocking and locking mechanism according to claim 5, characterized in that, The worm shaft (7) that meshes with multiple worm gears (8) is coaxially connected and driven by the same drive motor.

9. A method for unlocking and locking an aircraft water-dropping compartment door based on the unlocking and locking mechanism of the aircraft water-dropping compartment door according to claim 2, characterized in that, Includes the following steps: In the initial state, the latch joint (5) is locked by the latch groove (6). When it is necessary to open the water drop chamber door (1), the latch groove (6) is driven to rotate by the drive device (4) to unlock the latch joint (5). The latch joint (5) opens under the action of gravity along with the water drop chamber door (1). After the water drop is completed, the water drop chamber door (1) is rotated to make the latch joint (5) enter the opening of the latch groove (6). The latch groove (6) is driven to rotate in the opposite direction by the drive device (4) to lock the latch joint (5), thereby completing the entire process of opening and closing the water drop chamber door (1).

Images