Helicopter sliding cabin door capable of being controlled to be automatically opened and closed

Abstract

The utility model provides a controllable automatic opening and closing helicopter sliding cabin door, which comprises an upper sliding rail, a lower sliding rail and a cabin door, the lower sliding rail is arranged on the helicopter body; the sliding cabin door is arranged between the upper sliding rail and the lower sliding rail, and the sliding cabin door can slide along the upper sliding rail and the lower sliding rail; the motor assembly is arranged on the helicopter body, and the motor assembly is used for driving the sliding cabin door to slide along the upper sliding rail and the lower sliding rail; the sliding cabin door is slidably connected with the sliding rail through the pulley block structure, a pilot controls the direct-current brushless motor through the switch and the electromechanical management system to drive the gear and the rack to move relatively to achieve automatic opening and closing of the sliding cabin door and locking of any position, and under emergency or other conditions, the sliding cabin door can be opened and closed automatically. A gear of the direct-current brushless motor can be manually controlled to be separated from a rack, and free sliding of the cabin door is kept.

Description

Technical Field

[0001] This application belongs to the technical field of aircraft structural design and manufacturing, and particularly relates to a controllable automatic-switching helicopter sliding door. Background Art

[0002] Currently, most of the middle fuselage doors of helicopters adopt a sliding door structure. The sliding door has advantages such as a large opening degree and small occupied space after opening. However, the current helicopter sliding door can only be manually opened all the way to the end. Manually opening and closing the sliding door in the air is likely to cause the risk of personnel falling out of the aircraft. If the sliding door is kept open for a long time, it will also affect the flight speed of the helicopter due to aerodynamic reasons, seriously affecting the helicopter's ability to quickly execute tasks.

[0003] To meet the task requirements of automatically opening and closing the sliding door of a helicopter in the air, for example, after a parachute drop, the helicopter needs to quickly return to the camp or perform the next parachute drop. Implementing the automatic opening and closing of the sliding door is of great significance for quickly completing tactical tasks. Designing a controllable automatic-switching helicopter sliding door can efficiently implement tasks such as air drops. Utility Model Content

[0004] The purpose of this application is to propose a controllable automatic-switching helicopter sliding door, which is applicable to medium and large helicopters with a sliding door structure. The sliding door is slidably connected to the slide rail through a pulley group structure. The pilot controls the relative movement of the gear and the rack driven by a DC brushless motor through a switch and an electromechanical management system to achieve the automatic opening and closing and locking of the sliding door at any position. In case of emergency or other situations, the gear of the DC brushless motor can be manually disengaged from the rack to keep the door sliding freely.

[0005] This application provides a controllable automatic-switching helicopter sliding door, including:

[0006] An upper slide rail, arranged on the helicopter body;

[0007] A lower slide rail, arranged on the helicopter body;

[0008] A sliding door, arranged between the upper slide rail and the lower slide rail, and the sliding door can slide along the upper slide rail and the lower slide rail;

[0009] A motor assembly, arranged on the helicopter body, and the motor assembly is used to drive the sliding door to slide along the upper slide rail and the lower slide rail.

[0010] Preferably, it further includes:

[0011] A rack assembly, having a rack, and the rack is arranged on the sliding door;

[0012] The motor assembly includes:

[0013] A gear that can mesh with the rack.

[0014] Preferably, the motor assembly further includes:

[0015] A bracket disposed on the helicopter fuselage;

[0016] A motor disposed on the bracket; wherein, the gear is disposed on the output shaft of the motor, and the motor can slide along the bracket.

[0017] Preferably, it further includes:

[0018] A mode switching device disposed on the helicopter fuselage, and the switching device is used to lift the motor, drive the separation of the gear from the rack, and realize the conversion from the electric mode to the manual mode for the cabin door control.

[0019] Preferably, the mode switching device includes:

[0020] A rotating rod disposed on the helicopter fuselage;

[0021] A control handle passing through the rotating rod;

[0022] A rocker arm, one end of the rocker arm is connected to the control handle, and the other end is connected to the motor;

[0023] Wherein, by rotating the control handle, the control handle drives the rotating rod to rotate, and at the same time the rocker arm pulls the motor to slide upward along the bracket, realizing the conversion of the cabin door control from the electric mode to the manual mode.

[0024] Preferably, it further includes:

[0025] A fixed rotating shaft for connecting the other end of the rocker arm to the motor.

[0026] Advantageous technical effects of the present application:

[0027] In consideration of the requirements for tasks such as aerial automatic door closing during airdrops, etc., for example, after parachute jumpers are dropped, the sliding cabin door is slid to achieve automatic closing, which can enable the helicopter to quickly fly away to protect its own safety and perform other tasks. A controllable automatic switch helicopter sliding cabin door is designed.

[0028] Without significantly increasing the structural weight of the helicopter, the present application has both the function of manual sliding and the ability of automatic sliding, adding a strong practical function to the sliding cabin door, being able to be better applied to general helicopters, enriching the use of aerial door opening and closing, and providing more usage scenarios for the design of sliding cabin doors of medium and large helicopters. Description of the Drawings

[0029] Figure 1 It is a schematic diagram of the overall structure of a controllable automatic-opening helicopter sliding door provided by an embodiment of the present application;

[0030] Figure 2 It is a sectional view taken along line A-A of a controllable automatic-opening helicopter sliding door provided by an embodiment of the present application;

[0031] Figure 3 It is a sectional view taken along line B-B of a controllable automatic-opening helicopter sliding door provided by an embodiment of the present application;

[0032] Figure 4 It is a detailed view of the motor assembly of a controllable automatic-opening helicopter sliding door provided by an embodiment of the present application;

[0033] Figure 5 It is a flowchart of the automatic control of the motor of a controllable automatic-opening helicopter sliding door provided by an embodiment of the present application;

[0034] [[ID=ID=20]]Among them: 1 - upper slide rail, 2 - lower slide rail, 3 - motor assembly, 6 - sliding door, 7 - upper limit sliding assembly joint, 8 - rack assembly, 9 - upper pulley, 10 - Y-direction lower limit sliding assembly joint, 11 - lower pulley, 12 - gear, 13 - motor, 14 - motor moving slide bar, 15 - quick-release lock pin, 16 - rotating rod, 17 - control handle, 18 - rocker arm, 19 - fixed rotating shaft. Detailed implementation manners

[0035] Please refer to Figures 1 to 5 , the present application proposes a controllable automatic-opening helicopter sliding door, which is applicable to medium and large helicopters adopting a sliding door structure.

[0036] Among them, the sliding door is slidably connected to the slide rail through a pulley group structure, and the pilot controls the relative movement of the gear and the rack driven by a DC brushless motor through a switch and an electromechanical management system to realize the automatic opening and closing and locking at any position of the sliding door. In case of emergency or other situations, the gear of the DC brushless motor can be manually disengaged from the rack to keep the door sliding freely.

[0037] Specifically, the technical problems to be solved by the present application are realized by the following technical solutions:

[0038] First, an upper slide rail 1 and a lower slide rail 2 are provided to simulate the parts fixedly connected to the airframe;

[0039] Second, Y and Z upper limit sliding assembly joints 7 are provided to ensure that the sliding door 6 can slide smoothly while balancing the gravity of the sliding door 6 and restricting the movement of the sliding door in the Y direction;

[0040] Third, there are 3 upper limit sliding component joints 7 fixed to the upper edge of the sliding hatch door by riveting or screwing.

[0041] Fourth, an upper pulley 9 is installed on the upper limit sliding component joint 7, enabling the upper pulley 9 to roll between the upper sliding rail 1 during the sliding process of the sliding hatch door, ensuring the smoothness of the sliding hatch door.

[0042] Fifth, a rack component 8 is provided inside the upper limit sliding component joint 7, and the rack component 8 is connected to the upper limit sliding component joint by screwing.

[0043] Sixth, there are 3 Y - direction lower limit sliding component joints 10 fixed to the lower edge of the sliding hatch door by riveting or screwing, and a lower pulley 11 is provided to move between the lower sliding rail 2, restricting the Y - direction movement of the sliding hatch door.

[0044] Seventh, during the rotational movement of the sliding hatch door 6 between the upper pulley 9, the lower pulley 11, the upper sliding rail 1, and the lower sliding rail 2, the sliding hatch door 6 can move smoothly along the X - direction.

[0045] Eighth, a motor assembly 3 is installed on the helicopter body, located above the rear of the hatch opening. The motor assembly 3 is composed of a gear 12, a motor 13, and a control assembly that can control the up - and - down movement of the motor. The control assembly consists of a motor movement slide rod 14, a quick - release lock pin 15, a control handle 17, a rotating rod 16, a rocker arm 18, and a fixed rotating shaft 19.

[0046] Ninth, the upper end of the motor movement slide rod 14 is installed on the body, passing through the through - holes of the upper and lower motor mounting plates 20 on both sides. There are limit holes on the motor movement slide rod 14, and the quick - release lock pin 15 is used to control whether the gear 12 on the motor 13 contacts the rack component 8.

[0047] Tenth, both ends of the rotating rod 16 are installed on the body. The control handle 17 passes through the control handle 17 with the rotating rod 16 as the axis. The control handle 17 is rotatably connected to the rocker arm 18, and the rocker arm 18 is rotatably connected to the fixed rotating shaft 19, realizing the up - and - down movement of the motor assembly.

[0048] Eleventh, when the automatic opening and closing of the sliding hatch door 6 is not required, the motor assembly is pulled up through the control assembly, and the quick - release lock pin 15 is inserted into the reserved limit hole of the motor movement slide rod 14 to restrict the motor assembly in the upper part.

[0049] This application designs a controllable automatic - opening - and - closing helicopter sliding hatch door considering the requirements of air - dropping and other tasks that require automatic closing in the air. For example, after parachuting personnel are dropped, the sliding hatch door can be automatically closed, enabling the helicopter to quickly fly away to protect its own safety and perform other tasks.

[0050] Without significantly increasing the structural weight of the helicopter, this application has both the function of manual sliding and the ability of automatic sliding, adding strong practical functions to the sliding cabin door, which can be better applied to general helicopters, enriching the use of opening and closing the door in the air and providing more usage scenarios for the design of sliding cabin doors of medium and large helicopters.

Claims

1. A controllable automatic switch helicopter sliding cabin door, characterized in that, Comprising: An upper slide rail, arranged on the helicopter body; A lower slide rail, arranged on the helicopter body; A sliding hatch, arranged between the upper slide rail and the lower slide rail, and the sliding hatch can slide along the upper slide rail and the lower slide rail; A motor assembly, arranged on the helicopter body, and the motor assembly is used to drive the sliding hatch to slide along the upper slide rail and the lower slide rail.

2. The helicopter sliding hatch of a controllable automatic switch according to claim 1, characterized in that, Further comprising: A rack assembly, having a rack, and the rack is arranged on the sliding hatch; The motor assembly includes: A gear, and the gear can mesh with the rack.

3. The helicopter sliding cabin door of a controllable automatic switch according to claim 2, characterized in that, The motor assembly further includes: A bracket, arranged on the helicopter body; A motor, arranged on the bracket; wherein, the gear is arranged on the output shaft of the motor, and the motor can slide along the bracket.

4. A helicopter sliding hatch of a controllable automatic switch according to claim 3, characterized in that, Further comprising: A mode switching device, arranged on the helicopter body, and the switching device is used to lift the motor, drive the separation of the gear from the rack, and realize the conversion of the hatch control from the electric mode to the manual mode.

5. The helicopter sliding cabin door of a controllable automatic switch according to claim 4, characterized in that The mode switching device includes: A rotating rod, arranged on the helicopter body; A control handle, passing through the rotating rod; A rocker arm, one end of the rocker arm is connected to the control handle, and the other end is connected to the motor; Wherein, by rotating the control handle, the control handle drives the rotating rod to rotate, and at the same time the rocker arm pulls the motor to slide upward along the bracket, realizing the conversion of the hatch control from the electric mode to the manual mode.

6. The helicopter sliding hatch of a controllable automatic switch according to claim 5, characterized in that, Further comprising: A fixed rotating shaft, used to connect the other end of the rocker arm to the motor.

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