High-efficiency clamshell anti-pushing device

Abstract

The utility model discloses a kind of high-efficiency mussel type reverse thrust devices, belong to the field of aircraft reverse thrust technology, including tail nozzle, and with the reverse thrust door of the tail nozzle cooperation rotation installation, the outer peripheral wall of the tail nozzle is provided with reverse thrust mechanism, control system is provided on the reverse thrust mechanism;The utility model is by design by connecting rod, first hinged seat, second hinged seat and servo motor etc. component constitute reverse thrust door redundancy drive mechanism, each servo motor independent control work, realize mussel type reverse thrust door opening and closing angle flexible accurate regulation, and further reach the flexible adjustment of reverse thrust, improve the response speed of reverse thrust, the drive mode of multiple servo motors can greatly improve the fault tolerance of reverse thrust door drive system continue to work after failure, and further improve the reliability of reverse thrust device.

Description

Technical Field

[0001] This utility model relates to the field of aircraft thrust reverser technology, and in particular to a high-efficiency diverterless thrust reverser device. Background Technology

[0002] Thrust reversers are critical components for aircraft landing deceleration, and diverterless thrust reversers (DTRs) are widely used due to their simple structure and good aerodynamic performance. Their working principle involves changing the direction of engine exhaust by opening and closing the DTR valve, generating reverse thrust to achieve deceleration.

[0003] In existing diverter-type thrust reversers, the complex structural design makes the maintenance cost and maintenance difficult. Moreover, it relies on the coordinated operation of multiple actuators, which makes the coordination and control between actuators difficult and the adjustment speed slow, which is not conducive to quickly generating reverse thrust to assist the aircraft in deceleration. Furthermore, it lacks redundancy design and fault tolerance mechanism. If one actuator fails, it will not only disrupt the balance of reverse thrust, but may also cause the entire reverse thrust system to fail, thereby affecting the safety of the aircraft.

[0004] To address the aforementioned issues, a highly efficient clamshell reverse thrust device is proposed. Utility Model Content

[0005] The main purpose of this invention is to provide a high-efficiency clamshell reverse thrust device, which solves the problems mentioned in the background art.

[0006] The objective of this utility model can be achieved by adopting the following technical solution:

[0007] A high-efficiency clamshell thrust reverser includes a tail nozzle and a thrust reverser door that is rotatably mounted in cooperation with the tail nozzle. A thrust reverser mechanism is provided on the outer peripheral wall of the tail nozzle, and a control system is provided on the thrust reverser mechanism.

[0008] The thrust reverser mechanism includes mounting bases symmetrically fixed to both sides of the outer wall of the tail nozzle. Several servo motors are fixedly mounted on the top and bottom of the mounting bases. A first hinge seat is rotatably mounted between the output shaft of the servo motor and the mounting base. A connecting rod is fixedly sleeved on the output shaft. A second hinge seat is hinged to the end of the connecting rod away from the first hinge seat.

[0009] Furthermore, the top of the second hinge seat is integrally formed on the push-back door.

[0010] Furthermore, the reverse thrust gate is arranged in two symmetrical sets along the tail nozzle, forming a clamshell structure when closed and opened.

[0011] Furthermore, a baffle is fixedly nested at one end of the tail nozzle, and the side of the baffle that contacts the reverse push door is abutted against it.

[0012] Furthermore, the push-back door is made of titanium alloy and has a streamlined surface structure.

[0013] Furthermore, the control system is configured in two sets on the top of the mounting base, and the control system is electrically connected to the servo motor via a control line.

[0014] Furthermore, the air supply mechanism includes an air inlet and an air outlet formed in the inner walls of the upper and lower push doors. The top end of the upper push door is also sealed with an air distribution ring that communicates with the air inlet. An air inlet pipe that communicates with an external air filling device is sealed and inserted into the outer wall of the air distribution ring.

[0015] Furthermore, the bottom of the aforementioned push-back door is integrally formed with a mortise and tenon, and the top of the aforementioned push-back door is formed with a tenon groove that cooperates with the mortise and tenon for installation. The mortise and tenon has several upper air guide holes that communicate with the air inlet, and the bottom of the tenon groove has several lower air guide holes that communicate with the air outlet. The air outlet is connected to the outside.

[0016] The beneficial technical effects of this utility model are as follows:

[0017] This utility model designs a redundant drive mechanism for a clamshell door, consisting of a connecting rod, a first hinge seat, a second hinge seat, and servo motors. Each servo motor is independently controlled, enabling flexible and precise adjustment of the opening and closing angle of the clamshell door, thereby achieving flexible adjustment of the thrust force and improving the response speed of the thrust force. The drive method of multiple servo motors can greatly improve the fault tolerance rate of the push door drive system after a failure, thereby improving the reliability of the push device.

[0018] By adding an air supply mechanism and mortise and tenon structure to the push-back door, the airflow through the upper and lower air guide holes forms a pneumatic negative pressure, which provides a pneumatic seal when the push-back door is closed, ensuring better sealing when the push-back door is pushed back. Attached Figure Description

[0019] Figure 1 This is a frontal three-dimensional structural diagram of the reverse door when it is closed, according to a preferred embodiment of a high-efficiency clamshell reverse push device of the present invention.

[0020] Figure 2 This is a right-side perspective three-dimensional structural diagram of a preferred embodiment of a high-efficiency clamshell reverse push device according to the present invention, when the reverse push door is closed.

[0021] Figure 3 This is a frontal three-dimensional structural diagram of the push-out door after it is opened in a preferred embodiment of a high-efficiency clamshell push-out device according to the present invention;

[0022] Figure 4This is a schematic diagram of the internal structure of the thrust mechanism after deployment in a preferred embodiment of a high-efficiency clamshell thruster according to the present invention;

[0023] Figure 5 In a preferred embodiment of a high-efficiency clamshell reverser according to the present invention Figure 3 Enlarged view of point A in the middle;

[0024] Figure 6 This is a schematic diagram showing the connection relationship between the push-back door and the internal structure of the air supply mechanism in a preferred embodiment of a high-efficiency clamshell push-back device according to this utility model.

[0025] Figure 7 This is a schematic diagram showing the positional relationship between the mortise and tenon, the mortise groove, the upper air guide hole, and the lower air guide hole and the push-back door in a preferred embodiment of a high-efficiency clamshell push-back device according to the present invention.

[0026] The annotations in the attached figures are explained as follows:

[0027] 1. Reverse thrust mechanism; 101. Baffle; 102. Connecting rod; 103. First hinge seat; 104. Servo motor; 105. Second hinge seat; 106. Mounting seat; 2. Tail nozzle; 3. Control system; 4. Reverse thrust door; 5. Air supply mechanism; 501. Air inlet pipe; 502. Air inlet pipe; 503. Air inlet duct; 504. Mortise and tenon; 504a. Upper air guide hole; 505. Mortise and tenon groove; 505a. Lower air guide hole; 506. Air outlet duct. Detailed Implementation

[0028] To enable those skilled in the art to understand the technical solution of this utility model more clearly, the present utility model will be further described in detail below with reference to the embodiments and accompanying drawings, but the implementation of this utility model is not limited thereto.

[0029] like Figures 1-7 As shown, this embodiment provides a high-efficiency clamshell thrust reverser device, including a tail nozzle 2 and a thrust reverser door 4 that is rotatably installed in cooperation with the tail nozzle 2. A thrust reverser mechanism 1 is provided on the outer peripheral wall of the tail nozzle 2, and a control system 3 is provided on the thrust reverser mechanism 1. The thrust reverser mechanism 1 includes mounting seats 106 that are symmetrically fixed to both sides of the outer wall of the tail nozzle 2. Several servo motors 104 are fixedly provided at the top and bottom of the mounting seats 106. A first hinge seat 103 is rotatably installed between the output shaft of the servo motor 104 and the mounting seat 106. A connecting rod 102 is fixedly sleeved on the output shaft. A second hinge seat 105 is hinged to the end of the connecting rod 102 away from the first hinge seat 103.

[0030] In the above structure, an encoder is also installed on the output shaft of the servo motor 104 to measure the output speed and rotation angle of the servo motor 104. The encoder data is input into the thrust reverser adjustment control unit built into the control system 3. The control unit calculates the required thrust reverser force based on the preset control algorithm and flight parameters, sends a control signal to the servo motor 104, adjusts the angle of the thrust reverser mechanism 1, and thus adjusts the angle of the thrust reverser door 4. The control system 3 is also equipped with a redundant control bus. This redundant control bus uses communication bus technology to achieve unified synchronous control of the servo motor 104, avoiding large errors that could cause motor failure and thrust reverser mechanism 1 malfunction. At the same time, it can disconnect the malfunctioning servo motor 104 to ensure the normal use of other motors and improve the fault tolerance of the device. The control system 3 is also equipped with a fault diagnosis system and a backup power supply.

[0031] The top of the second hinge seat 105 is integrally formed on the reverse thrust door 4. The reverse thrust door 4 is arranged in two symmetrical sets along the tail nozzle 2, and its closing and opening are in the form of a clamshell structure.

[0032] In the above structure, the connecting rod 102, through the first hinge seat 103 and the second hinge seat 105, allows for flexible adjustment of the angle of the upper and lower push door 4. Compared with the traditional actuator setup, this drive structure is more flexible. In addition, the layout of the connecting rod 102 and the push door 4 is compact and reasonable, facilitating maintenance and repair.

[0033] One end of the tail nozzle 2 is fixedly nested with a baffle 101. The side of the baffle 101 that contacts the reverse thrust door 4 is set to abut against it. When the reverse thrust door 4 is closed, the inner wall is limited by the baffle 101. When it is opened, the two reverse thrust doors 4 form a combined state to realize the reverse thrust of the engine airflow.

[0034] The reverse thrust door 4 is made of titanium alloy, a new type of aerospace material that is corrosion-resistant, high-temperature resistant, and high-strength. This enhances the durability of the component in harsh environments. The surface has a streamlined structure that matches the shape of the engine, ensuring the aerodynamic performance of the aircraft during flight.

[0035] Two sets of control systems 3 are configured on the top of the mounting base 106. The control systems 3 and servo motors 104 are electrically connected via control lines. The servo motors 104 enable high-precision, fast-response thrust adjustment, improving aircraft landing performance and safety. They possess high reliability and stability, enabling long-term stable operation in complex flight environments. By precisely controlling the magnitude and direction of the thrust reverser, the aircraft's landing distance can be significantly reduced, improving airport operational efficiency. This also reduces the aircraft's reliance on the braking system, extends its lifespan, and lowers airline operating costs.

[0036] The air supply mechanism 5 includes an air inlet duct 503 and an air outlet duct 506 formed in the inner wall of the upper and lower push-back doors 4. A distribution ring 501 communicating with the air inlet duct 503 is also sealed and installed at the top end of the upper push-back door 4. An air inlet pipe 502 communicating with an external inflation device is sealed and inserted into the outer wall of the distribution ring 501. A mortise and tenon 504 is integrally formed at the bottom of the upper push-back door 4, and a tenon groove 505 is formed at the top of the lower push-back door 4 to mate with the mortise and tenon 504. Several upper air guide holes 504a communicating with the air inlet duct 503 are opened through the mortise and tenon 504, and several lower air guide holes 505a communicating with the air outlet duct 506 are opened at the bottom of the tenon groove 505. The air outlet duct 506 communicates with the outside.

[0037] In the above embodiment, when the upper push door 4 and the lower push door 4 are closed, the mortise 504 and the tenon 505 engage, and at the same time, the upper air guide hole 504a and the lower air guide hole 505a are aligned. High-pressure gas is introduced into the air inlet pipe 502 and discharged to the outside through the air inlet duct 503, the upper air guide hole 504a, the lower air guide hole 505a and the air outlet duct 506. The negative pressure formed by the upper air guide hole 504a and the lower air guide hole 505a when high-pressure gas is flowing can further improve the tightness of the mortise and tenon structure, thereby improving the dynamic seal when the upper and lower push doors 4 are closed. In addition, the mortise and tenon structure is distributed in a ring along the edge of the push door 4, and the cross-sectional shape is a right trapezoid. The edges of the mortise and tenon structure are rounded to avoid fatigue cracks caused by stress concentration.

[0038] The above are merely further embodiments of this utility model, but the protection scope of this utility model is not limited thereto. Any equivalent substitutions or modifications made by those skilled in the art within the scope disclosed by this utility model, based on the technical solution and concept of this utility model, shall fall within the protection scope of this utility model.

[0039] All standard parts used in this application can be purchased from the market, and can be customized according to the description and drawings. The specific connection methods of each part adopt conventional methods such as bolts, rivets, and welding that are mature in the prior art. The machinery, parts and equipment adopt conventional models in the prior art. The control method is automatic control through a controller. The control circuit of the controller can be implemented by simple programming by those skilled in the art and is common knowledge in the field. Since this application is mainly used to protect mechanical devices, the control method and circuit connection will not be explained in detail in this application.

Claims

1. A high-efficiency clamshell thrust reverser, comprising a tail nozzle (2) and a thrust reverser gate (4) rotatably mounted in cooperation with the tail nozzle (2), characterized in that: The outer peripheral wall of the tail nozzle (2) is provided with a thrust reverser (1), the thrust reverser (1) is provided with a control system (3), and the thrust reverser (4) is also provided with an air supply mechanism (5). The thrust reverser (1) includes mounting bases (106) symmetrically fixed to both sides of the outer wall of the tail nozzle (2). Several servo motors (104) are fixedly mounted on the top and bottom of the mounting bases (106). A first hinge seat (103) is rotatably mounted between the output shaft of the servo motor (104) and the mounting base (106). A connecting rod (102) is fixedly sleeved on the output shaft. A second hinge seat (105) is hinged to the end of the connecting rod (102) away from the first hinge seat (103).

2. The high-efficiency clamshell reverser according to claim 1, characterized in that: The top of the second hinge seat (105) is integrally formed on the push door (4).

3. The high-efficiency clamshell reverser according to claim 2, characterized in that: The reverse thrust gate (4) is arranged in two symmetrical sets along the tail nozzle (2), and its closing and opening are in the form of a clamshell structure.

4. The high-efficiency clamshell reverser according to claim 3, characterized in that: One end of the tail nozzle (2) is fixedly nested with a baffle (101), and the side of the baffle (101) that contacts the reverse push door (4) is abutted.

5. The high-efficiency clamshell reverser according to claim 4, characterized in that: The push-back door (4) is made of titanium alloy and has a streamlined surface.

6. The high-efficiency clamshell reverser according to claim 5, characterized in that: The control system (3) is configured in two sets on the top of the mounting base (106), and the control system (3) is electrically connected to the servo motor (104) via a control line.

7. The high-efficiency clamshell reverser according to claim 1, characterized in that: The air supply mechanism (5) includes an air inlet (503) and an air outlet (506) formed in the inner wall of the upper and lower push doors (4). The top end of the upper push door (4) is also sealed with an air distribution ring (501) that communicates with the air inlet (503). An air inlet pipe (502) that communicates with an external air filling device is sealed and inserted into the outer wall of the air distribution ring (501).

8. The high-efficiency clamshell reverser according to claim 7, characterized in that: The bottom of the aforementioned push-back door (4) is integrally formed with a mortise and tenon (504), and the top of the aforementioned push-back door (4) is formed with a tenon groove (505) that is fitted and installed with the mortise and tenon (504). The mortise and tenon (504) is provided with several upper air guide holes (504a) that are connected to the air inlet (503), and the bottom of the tenon groove (505) is provided with several lower air guide holes (505a) that are connected to the air outlet (506). The air outlet (506) is connected to the outside.

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