Follow-up slat movable guard plate device, wing and airplane

Abstract

The invention relates to a follow-up slat movable guard plate device, a wing and an aircraft. The follow-up slat movable guard plate device comprises a slat side assembly and a fixed leading edge side assembly, the slat side assembly comprises at least one protection plate, at least one hinge, a first connecting rod, at least one connecting rod support, a rotating connector, a follow-up rod component, a stop rod and a sliding groove located in a slat sliding rail. Wherein the fixed front edge side assembly comprises a stop structure, and the stop structure comprises a fixed bracket, a resistance bearing and a stop rod contact piece; wherein the protective plate is connected with the lower wing surface of the aircraft slat through a hinge, the first connecting rod is connected with the protective plate through the connecting rod support, one end of the rotating joint is connected with the first connecting rod, the other end of the rotating joint is connected with the follow-up rod component and can rotate around a rotating shaft of the follow-up rod component, and the stop rod is connected to the follow-up rod component and can move in the sliding groove; wherein the fixed support is installed on the lower wing face of the fixed leading edge of the airplane, and the stop rod contact piece is installed on the fixed support through the resistance bearing.

Description

Technical Field

[0001] The present invention relates to a follow-up type slat movable guard plate device and an aircraft including the follow-up type slat movable guard plate device, and relates to the technical field of aircraft slat structures. Background Art

[0002] During flight, an aircraft will open its slats to allow air flow to pass through the gap between the fixed leading edge and the slats, thereby increasing lift. After the slats of the prior art are opened, some air flow will enter along the lower wing surface of the slats, forming turbulence and generating relatively large noise, which affects the flight experience of passengers.

[0003] In order to achieve the noise reduction function when the slats are opened, there are several solutions in the prior art. However, the solutions in the prior art usually affect the aerodynamic performance or have a relatively high manufacturing difficulty. Summary of the Invention

[0004] An object of the present invention is to provide a follow-up type slat movable guard plate device, which can overcome at least some defects of the prior art, can effectively guide the air flow when the slats are opened, achieve the noise reduction function, and the device is simple to manufacture and easy to assemble, and hardly affects the aerodynamic performance.

[0005] The above object of the present invention is achieved by a follow-up type slat movable guard plate device, and the follow-up type slat movable guard plate device includes a slat side assembly and a fixed leading edge side assembly;

[0006] Wherein, the slat side assembly includes at least one guard plate, at least one hinge, a first connecting rod, at least one connecting rod bracket, a rotary joint, a follow-up rod member, a stop rod, and a sliding groove located on the slat slide rail;

[0007] Wherein, the fixed leading edge side assembly includes a stop structure, and the stop structure includes a fixed bracket, a resistance bearing, and a stop rod contact member;

[0008] Wherein, the guard plate is connected to the lower wing surface of the aircraft slat by means of the hinge, the first connecting rod is connected to the guard plate by means of the connecting rod bracket, one end of the rotary joint is connected to the first connecting rod, the other end is connected to the follow-up rod member, and can rotate around the rotation axis of the rotary joint, the stop rod is connected to the follow-up rod member, and can move in the sliding groove;

[0009] Wherein, the fixed bracket is installed on the lower wing surface of the aircraft fixed leading edge, and the stop rod contact member is installed on the fixed bracket by means of the resistance bearing;

[0010] Wherein, when the stop rod contacts the stop rod contact member, the stop rod moves along the sliding groove under the action of the resistance of the resistance bearing. The movement of the stop rod drives the follower rod member to move, and drives the rotary joint to rotate around its rotation axis, further driving the first connecting rod connected to the rotary joint to rotate around the hinge axis of the hinge, and further driving the connecting rod bracket and the guard plate to rotate around the hinge axis.

[0011] According to the above technical solution, the follow-up type slat movable guard plate device of the present invention can achieve the following beneficial technical effects: it can effectively guide the airflow when the slat is opened, realize the noise reduction function, and the device is simple to manufacture and easy to assemble, and hardly affects the aerodynamic performance.

[0012] Preferably, the stop rod is connected near the end of the follower rod member.

[0013] According to the above technical solution, the follow-up type slat movable guard plate device of the present invention can achieve the following beneficial technical effects: shorten the length of the follower rod member, and further reduce the manufacturing and assembly cost and difficulty of the device.

[0014] Preferably, the stop rod extends perpendicular to the follower rod member.

[0015] According to the above technical solution, the follow-up type slat movable guard plate device of the present invention can achieve the following beneficial technical effects: when the slat is opened or retracted, it is convenient for the stop rod to move along the sliding groove, and better realizes the functions of guiding the airflow and reducing noise.

[0016] Preferably, the follower rod member includes a first follower rod and a second follower rod that are hinged to each other.

[0017] According to the above technical solution, the follow-up type slat movable guard plate device of the present invention can achieve the following beneficial technical effects: compared with a single follower rod, the first follower rod and the second follower rod that are hinged to each other can ensure the required rotation range of the rotary joint while shortening the total length of the follower rod member, and further ensure the retraction and lowering of the guard plate.

[0018] Preferably, the length of the first follower rod is 8 to 12 times the length of the second follower rod.

[0019] According to the above technical solution, the follow-up type slat movable guard plate device of the present invention can achieve the following beneficial technical effects: through the appropriate length ratio of the first follower rod to the second follower rod, better ensure the required rotation range of the rotary joint, and further ensure the retraction and lowering of the guard plate.

[0020] Preferably, the slat side assembly further includes a second connecting rod, and the second connecting rod is connected to the end of the connecting rod bracket opposite to the first connecting rod.

[0021] According to the above technical solution, the follow-up type slat movable guard plate device of the present invention can achieve the following beneficial technical effects: it can make the slat side assembly more stable, better realize the functions of guiding the air flow and reducing noise, and can limit the retraction range of the guard plate.

[0022] Preferably, the second connecting rod and the first connecting rod are parallel to each other.

[0023] According to the above technical solution, the follow-up type slat movable guard plate device of the present invention can achieve the following beneficial technical effects: through the first connecting rod and the second connecting rod arranged in parallel, the slat side assembly can be made more stable, better realize the functions of guiding the air flow and reducing noise, and can limit the retraction range of the guard plate.

[0024] Preferably, the stop rod contact can rotate around the axis of the resistance bearing under the push of the stop rod.

[0025] According to the above technical solution, the follow-up type slat movable guard plate device of the present invention can achieve the following beneficial technical effects: when the slat is opened or retracted, it is convenient for the stop rod to move along the sliding groove, and better realize the functions of guiding the air flow and reducing noise.

[0026] Preferably, the maximum retraction angle of the guard plate is 20 to 40 degrees.

[0027] According to the above technical solution, the follow-up type slat movable guard plate device of the present invention can achieve the following beneficial technical effects: through the appropriate maximum retraction angle of the guard plate, it is ensured that the functions of guiding the air flow and reducing noise are better realized when the guard plate is retracted.

[0028] The above object of the present invention is also achieved by an aircraft, which includes: a slat, a fixed leading edge, and the follow-up type slat movable guard plate device as described in any one of the above aspects.

[0029] According to the above technical solution, the aircraft of the present invention can achieve the following beneficial technical effects: it can effectively guide the air flow when the slat is opened, realize the noise reduction function, and the device is simple to manufacture and easy to assemble, and hardly affects the aerodynamic performance. BRIEF DESCRIPTION OF THE DRAWINGS

[0030] Figure 1a is a partial perspective view of the slat side assembly of the follow-up type slat movable guard plate device according to an embodiment of the present invention.

[0031] Figure 1b is another partial perspective view of the slat side assembly of the follow-up type slat movable guard plate device according to an embodiment of the present invention.

[0032] Figure 2aIt is a partial perspective view of the fixed leading edge side assembly of the follow-up type slat movable guard plate device according to an embodiment of the present invention.

[0033] Figure 2b It is another partial perspective view of the fixed leading edge side assembly of the follow-up type slat movable guard plate device according to an embodiment of the present invention.

[0034] Figure 3 It is a general schematic diagram during the slat opening process of the follow-up type slat movable guard plate device according to an embodiment of the present invention.

[0035] Figures 4a to 4c It is a partial schematic diagram during the slat opening process of the follow-up type slat movable guard plate device according to an embodiment of the present invention.

[0036] Figure 5 It is a schematic diagram when the guard plate of the follow-up type slat movable guard plate device according to an embodiment of the present invention is in the retracted position.

[0037] List of reference numerals

[0038] 1: Slat;

[0039] 2: Guard plate;

[0040] 3: Hinge;

[0041] 4: First connecting rod;

[0042] 5: Connecting rod bracket;

[0043] 6: Rotary joint;

[0044] 7: Follow-up rod member;

[0045] 8: Stop rod;

[0046] 9: Slat slide rail;

[0047] 10: Sliding groove;

[0048] 11: Fixed leading edge;

[0049] 12: Stop structure;

[0050] 13: Fixed bracket

[0051] 14: Resistance bearing;

[0052] 15: Stop rod contact;

[0053] 21: Second connecting rod. Detailed implementation manners

[0054] The specific embodiments of the present invention will be described below. It should be noted that in the process of the specific description of these embodiments, for the sake of concise description, it is impossible for this specification to describe all features of the actual embodiments in detail. It should be understood that in the actual implementation process of any one of the embodiments, just as in the process of any engineering project or design project, in order to achieve the specific goals of the developer and to meet the system-related or business-related restrictions, various specific decisions are often made, and these will also change from one embodiment to another. In addition, it should also be understood that although the efforts made in this development process may be complex and lengthy, for those of ordinary skill in the art related to the content disclosed in the present invention, some design, manufacturing, or production changes based on the technical content disclosed in this disclosure are only conventional technical means and should not be understood as the content of this disclosure being insufficient.

[0055] Unless otherwise defined, the technical terms or scientific terms used in the claims and the specification shall have the ordinary meaning understood by those of ordinary skill in the technical field to which the present invention pertains. The terms "first", "second" and similar terms used in the specification and claims of this patent application for the invention do not denote any order, quantity or importance, but are only used to distinguish different components. The terms "a" or "an" and the like do not denote a limitation of quantity, but mean that there is at least one. The terms "comprising" or "including" and the like mean that the elements or items appearing before "comprising" or "including" cover the elements or items listed after "comprising" or "including" and their equivalent elements, and do not exclude other elements or items. The terms "connected" or "coupled" and the like are not limited to physical or mechanical connections, nor are they limited to direct or indirect connections.

[0056] In the following description, in order to clearly show the structure and working mode of the present invention, many directional terms will be used for description. However, the terms such as "front", "rear", "left", "right", "outer", "inner", "outward", "inward", "up", "down" and the like should be understood as convenient terms and should not be understood as limiting terms.

[0057] Figure 1a is a partial perspective view of a flap side assembly of a follow-up type flap movable guard plate device according to an embodiment of the present invention. Figure 1b is another partial perspective view of a flap side assembly of a follow-up type flap movable guard plate device according to an embodiment of the present invention. Figure 2a is a partial perspective view of a fixed leading edge side assembly of a follow-up type flap movable guard plate device according to an embodiment of the present invention. Figure 2bIt is another partial perspective view of the fixed leading edge side component of the follow-up type slat movable fairing device according to an embodiment of the present invention. Figure 3 It is an overall schematic diagram during the opening process of the slat of the follow-up type slat movable fairing device according to an embodiment of the present invention. Figures 4a to 4c It is partial schematic diagrams during the opening process of the slat of the follow-up type slat movable fairing device according to an embodiment of the present invention. Figure 5 It is a schematic diagram when the fairing of the follow-up type slat movable fairing device according to an embodiment of the present invention is in the retracted position.

[0058] As Figures 1a to 5 shown, according to some embodiments of the present invention, the follow-up type slat movable fairing device includes a slat side component and a fixed leading edge side component;

[0059] Among them, the slat side component includes at least one fairing 2, at least one (preferably multiple) hinge 3, a first connecting rod 4, at least one (preferably multiple) connecting rod bracket 5, a rotary joint 6, a follow-up rod member 7, a stop rod 8, and a sliding groove 10 located on the slat slide rail 9;

[0060] Among them, the fixed leading edge side component includes a stop structure 12, and the stop structure 12 includes a fixed bracket 13, a resistance bearing 14, and a stop rod contact 15;

[0061] Among them, the fairing 2 is connected to the lower wing surface of the aircraft slat 1 by means of the hinge 3, the first connecting rod 4 is connected to the fairing 2 by means of the connecting rod bracket 5, one end of the rotary joint 6 is connected to the first connecting rod 4, and the other end is connected to the follow-up rod member 7 and can rotate around the rotation axis of the rotary joint. The stop rod 8 is connected to the follow-up rod member 7 and can move in the sliding groove 10;

[0062] Among them, the fixed bracket 13 is installed on the lower wing surface of the aircraft fixed leading edge 11, and the stop rod contact 15 is installed on the fixed bracket 13 by means of the resistance bearing 14.

[0063] When the slat 1 is opened, the slat side component moves together with the movement of the slat slide rail 9. When it moves to a certain extent, the stop rod 8 contacts an inner side surface of the stop rod contact 15. The stop rod 8 moves along the sliding groove 10 under the action of the resistance of the resistance bearing 14. The movement of the stop rod 8 drives the follow-up rod member 7 to move, and drives the rotary joint 6 to rotate around its rotation axis, and further drives the first connecting rod 4 connected to the rotary joint 6 to rotate around the hinge axis of the hinge 3, and further drives the connecting rod bracket 5 and the fairing 2 to rotate around the hinge axis, so that the fairing 2 is retracted to form a certain angle with the lower wing surface of the slat 1, and the airflow is guided to achieve the purpose of noise reduction. At this time, the fairing 2 is in the retracted position.

[0064] When the slat 1 retracts, the slat side assembly moves together with the movement of the slat slide rail 9. When the movement reaches a certain extent, the stop rod 8 contacts the other inner side surface of the stop rod contact member 15. The stop rod 8 moves along the sliding groove 10 under the action of the resistance of the resistance bearing 14. The movement of the stop rod 8 drives the follower rod member 7 to move, and drives the rotary joint 6 to rotate around its rotation axis. Further, it drives the first connecting rod 4 connected to the rotary joint 6 to rotate around the hinge axis of the hinge 3. Further, it drives the connecting rod bracket 5 and the guard plate 2 to rotate around the hinge axis. Therefore, the guard plate 2 is lowered to be substantially flush with the lower wing surface of the slat 1. At this time, the guard plate 2 is in the lowered position.

[0065] According to the above technical solution, the follow-up type slat movable guard plate device of the present invention can achieve the following beneficial technical effects: it can effectively guide the airflow when the slat is opened, realize the noise reduction function, and the device is simple to manufacture and easy to assemble, and hardly affects the aerodynamic performance.

[0066] It should be noted that the term "follow-up type slat movable guard plate device" used in this application refers to a device including a guard plate and its related components that can move (retract and lower) as the slat moves (opens and retracts).

[0067] The term "stop rod contact member" used in this application refers to a member that contacts the stop rod during the movement of the slat.

[0068] Preferably, as Figures 1a to 1b shown, the material of the guard plate 2 can be aluminum alloy, carbon fiber composite material or titanium alloy, and the materials of the hinge 3, the first connecting rod 4, the connecting rod bracket 5, the rotary joint 6, the follower rod member 7, and the stop rod 8 can be aluminum alloy or titanium alloy.

[0069] Preferably, as Figures 2a to 2b shown, the stop rod contact member 15 can be in the form of a V-shaped member. That is to say, when the slat 1 is opened, the stop rod 8 contacts one inner side surface of the V-shaped member; when the slat 1 retracts, the stop rod 8 contacts the other inner side surface of the V-shaped member.

[0070] Preferably, as Figures 2a to 2b shown, the materials of the fixed bracket 13 and the stop rod contact member 15 can be aluminum alloy, carbon fiber composite material or titanium alloy.

[0071] In some embodiments, as Figures 1a to 1b shown, the stop rod 8 is connected near the end of the follower rod member 7. According to the above technical solution, the follow-up type slat movable guard plate device of the present invention can achieve the following beneficial technical effects: shorten the length of the follower rod member, and further reduce the manufacturing and assembly cost and difficulty of the device.

[0072] In some embodiments, as Figures 1a to 1bAs shown, the stop lever 8 extends perpendicular to the follower lever member 7. According to the above technical solution, the follow-up type slat movable guard plate device of the present invention can achieve the following beneficial technical effects: When the slat is opened or retracted, it is convenient for the stop lever to move along the sliding groove, and it can better realize the functions of guiding the air flow and reducing noise.

[0073] In some embodiments, as Figures 1a to 1b shown, the follower lever member 7 includes a first follower lever and a second follower lever that are hinged to each other. Specifically, the aforementioned other end of the rotary joint 6 is connected to the second follower lever, the second follower lever is hinged to the first follower lever, and the stop lever 8 is connected to the end of the first follower lever ( Figures 1a to 1b the right end in). According to the above technical solution, the follow-up type slat movable guard plate device of the present invention can achieve the following beneficial technical effects: Compared with a single follower lever, the first follower lever and the second follower lever that are hinged to each other can ensure the required rotation range of the rotary joint while shortening the total length of the follower lever member, and further ensure the retraction and lowering of the guard plate.

[0074] In some embodiments, as Figures 1a to 1b shown, the length of the first follower lever is 8 to 12 times the length of the second follower lever. According to the above technical solution, the follow-up type slat movable guard plate device of the present invention can achieve the following beneficial technical effects: By an appropriate length ratio of the first follower lever to the second follower lever, it can better ensure the required rotation range of the rotary joint, and further ensure the retraction and lowering of the guard plate.

[0075] In some embodiments, as Figures 1a to 1b shown, the slat side assembly further includes a second connecting rod 21, and the second connecting rod 21 is connected to the end of the connecting rod bracket 5 opposite to the first connecting rod 4. According to the above technical solution, the follow-up type slat movable guard plate device of the present invention can achieve the following beneficial technical effects: It can make the slat side assembly more stable, better realize the functions of guiding the air flow and reducing noise, and can limit the retraction range of the guard plate.

[0076] In some embodiments, as Figures 1a to 1b shown, the second connecting rod 21 and the first connecting rod 4 are parallel to each other. According to the above technical solution, the follow-up type slat movable guard plate device of the present invention can achieve the following beneficial technical effects: Through the parallel arrangement of the first connecting rod and the second connecting rod, the slat side assembly can be made more stable, better realize the functions of guiding the air flow and reducing noise, and can limit the retraction range of the guard plate.

[0077] In some embodiments, as Figures 2a to 2bAs shown, the stop lever contact 15 can rotate around the axis of the resistance bearing 14 under the push of the stop lever 8. According to the above technical solution, the follow-up type slat movable guard plate device of the present invention can achieve the following beneficial technical effects: when the slat is opened or retracted, it is convenient for the stop lever to move along the sliding groove, and better realizes the functions of guiding the airflow and reducing noise.

[0078] In some embodiments, as Figure 5 shown, the maximum retracted angle of the guard plate 2 is 20 to 40 degrees. According to the above technical solution, the follow-up type slat movable guard plate device of the present invention can achieve the following beneficial technical effects: through the appropriate maximum retracted angle of the guard plate, it ensures that the functions of guiding the airflow and reducing noise are better realized when the guard plate is retracted.

[0079] The following combines Figures 3 to 5 to describe the specific movement process of the follow-up type slat movable guard plate device of the present invention.

[0080] Figure 3 is the overall schematic diagram during the slat opening process of the follow-up type slat movable guard plate device of an embodiment of the present invention. Structures such as the guard plate 2, hinge 3, first connecting rod 4, connecting rod bracket 5, rotary joint 6, follow-up rod member 7, stop lever 8, etc. move together with the slat 1 as the slat slide rail 9 extends, while the stop structure 12 is located in the fixed leading edge 11 and does not move.

[0081] Combined with Figures 4a to 4c to describe the specific movement process of the guard plate 2 being retracted as the slat 1 continues to extend (open).

[0082] Figure 4a It shows that as the slat slide rail 9 continues to extend, the stop lever 8 contacts the stop structure 12. Under the action of resistance, the stop lever 8 moves along the sliding groove 10, and the movement of the stop lever 8 drives the follow-up rod member 7 to move. At the same time, the stop lever contact 15 gradually rotates counterclockwise around the axis of the resistance bearing 14.

[0083] Figure 4b It shows that as the follow-up rod member 7 moves, it drives the rotary joint 6 to rotate clockwise around its rotation axis, and further drives the first connecting rod 4 connected to the rotary joint 6 to rotate counterclockwise around the hinge axis of the hinge 3.

[0084] Figure 4c It shows that as the first connecting rod 4 rotates, it drives the connecting rod bracket 5 connected to it to rotate counterclockwise around the hinge axis of the hinge 3. Since the connecting rod bracket 5 is connected to the guard plate 2, it further drives the guard plate 2 to rotate counterclockwise around the hinge axis of the hinge 3, thereby realizing the function of retracting the guard plate 2.

[0085] Figure 5The schematic diagram of the slat 1 after the guard plate 2 is completely retracted (i.e., at the maximum retraction angle) is shown. After the guard plate 2 is retracted, the air flow flows along the surface of the guard plate, thereby achieving the purpose of guiding the flow and reducing noise.

[0086] During the retraction process of the slat 1, as the slat slide rail 9 continues to retract, the stop rod 8 contacts the stop structure 12 again. Under the action of the resistance, the stop rod 8 moves in the opposite direction along the sliding groove 10 (opposite to the direction of the slat opening process), and the movement of the stop rod 8 drives the follower rod member 7 to move. At the same time, the stop rod contact 15 gradually rotates clockwise along the axis of the resistance bearing 14. As the follower rod member 7 moves, it drives the rotary joint 6 to rotate counterclockwise around its rotation axis, and further drives the first connecting rod 4 connected to the rotary joint 6 to rotate clockwise around the hinge axis of the hinge 3. As the first connecting rod 4 rotates, it drives the connecting rod bracket 5 connected to it to rotate clockwise around the hinge axis of the hinge 3. Since the connecting rod bracket 5 is connected to the guard plate 2, it further drives the guard plate 2 to rotate clockwise around the hinge axis of the hinge 3, thereby realizing the function of lowering the guard plate 2.

[0087] Corresponding to the opening and retraction of the slat 1, the retraction and lowering of the guard plate 2 is one cycle, realizing the follow-up retraction and lowering with the movement of the slat 1, and realizing the function of noise reduction.

[0088] According to an embodiment of the present invention, the aircraft includes: a slat 1, a fixed leading edge 11, and a follow-up slat movable guard plate device as described in any of the above aspects. According to the above technical solution, the aircraft of the present invention can achieve the following beneficial technical effects: it can effectively guide the air flow when the slat is opened, realize the noise reduction function, and the device is simple to manufacture and easy to assemble, and hardly affects the aerodynamic performance.

[0089] The innovation points of the follow-up slat movable guard plate device of the present invention are mainly as follows:

[0090] (1) The present invention proposes a deflector guard plate that can be installed on the lower wing surface of the slat. The follow-up slat movable guard plate device of the present invention can effectively guide the air flow when the slat is opened, realize the noise reduction function, and the device is simple to manufacture and easy to assemble.

[0091] (2) The present invention adopts a follow-up design. With the opening and retraction process of the slat, the guard plate is correspondingly retracted and lowered, without adding an additional power device, and occupies less space inside the slat and the fixed leading edge.

[0092] (3) The present invention ensures the smooth surface of the slat and does not affect the function of the slat. The guard plate fits the lower wing surfaces of the slat and the fixed leading edge, ensuring the smoothness of the wing surface and having a relatively small impact on the aerodynamic performance of the aircraft; at the same time, the guard plate can still play a role in increasing lift after being retracted, ensuring the normal function of the slat.

[0093] The specific embodiments of the present invention have been described above. However, those skilled in the art will understand that the above specific embodiments do not constitute a limitation on the present invention. Based on the above disclosed content, those skilled in the art can make various modifications without exceeding the scope of the present invention.

Claims

1. A follow-up type slat movable guard plate device, characterized in that, The follow-up type slat movable guard plate device includes a slat side component and a fixed leading edge side component; Wherein, the slat side component includes at least one guard plate, at least one hinge, a first connecting rod, at least one connecting rod bracket, a rotary joint, a follow-up rod member, a stop rod, and a sliding groove located on the slat slide rail; Wherein, the fixed leading edge side component includes a stop structure, and the stop structure includes a fixed bracket, a resistance bearing, and a stop rod contact member; Wherein, the guard plate is connected to the lower wing surface of the aircraft slat by means of the hinge, the first connecting rod is connected to the guard plate by means of the connecting rod bracket, one end of the rotary joint is connected to the first connecting rod, and the other end is connected to the follow-up rod member and can rotate around the rotation axis of the rotary joint. The stop rod is connected to the follow-up rod member and can move in the sliding groove; Wherein, the fixed bracket is installed on the lower wing surface of the fixed leading edge of the aircraft, and the stop rod contact member is installed on the fixed bracket by means of the resistance bearing; Wherein, when the stop rod contacts the stop rod contact member, the stop rod moves along the sliding groove under the action of the resistance of the resistance bearing. The movement of the stop rod drives the follow-up rod member to move, and drives the rotary joint to rotate around its rotation axis, and further drives the first connecting rod connected to the rotary joint to rotate around the hinge axis of the hinge, and further drives the connecting rod bracket and the guard plate to rotate around the hinge axis.

2. The follow-up type slat movable guard plate device according to claim 1, characterized in that, The stop rod is connected near the end of the follow-up rod member.

3. The follow-up type slat movable guard plate device according to claim 1, characterized in that, The stop rod extends perpendicular to the follow-up rod member.

4. The follow-up type slat movable guard plate device according to claim 1, wherein The follow-up rod member includes a first follow-up rod and a second follow-up rod that are hinged to each other.

5. The follow-up type slat movable guard plate device according to claim 4, characterized in that, The length of the first follow-up rod is 8 to 12 times the length of the second follow-up rod.

6. The follow-up type slat movable guard plate device according to claim 1, characterized in that, The slat side component further includes a second connecting rod, and the second connecting rod is connected to the end of the connecting rod bracket opposite to the first connecting rod.

7. The follow-up type slat movable guard plate device according to claim 6, characterized in that, The second connecting rod and the first connecting rod are parallel to each other.

8. The follow-up type slat movable guard plate device according to claim 1, characterized in that, The stop rod contact member can rotate around the axis of the resistance bearing under the push of the stop rod.

9. The follow-up type slat movable guard plate device according to claim 1, characterized in that The maximum retracted angle of the guard plate is 20 to 40 degrees.

10. An airfoil provided with a follow-up type slat movable guard plate device, comprising: The follow-up type slat movable guard plate device according to any one of claims 1-9.

11. An aircraft, comprising: A slat, a fixed leading edge, and the follow-up type slat movable guard plate device according to any one of claims 1-9.

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