Triangular rocker arm with variable arm length

Abstract

The utility model belongs to the technical field of aircraft control system design, and particularly relates to a triangular rocker arm with the variable arm length. The triangular rocker arm comprises a base (1), one end of the base (1) is connected with a control lever of an aircraft control system, the other end of the base (1) is provided with a strip-shaped groove (11), and strip-shaped holes (12) parallel to the strip-shaped groove (11) are formed in the two sides of the strip-shaped groove (11); one end of the sliding block (2) is connected with a control surface of an aircraft control system, the other end of the sliding block (2) is provided with a guide rail (21), the guide rail (21) can slide in the strip-shaped groove (11) of the base (1), and the end, provided with the guide rail (21), of the sliding block (2) is further provided with a through hole (22); the bolt assembly can penetrate through the strip-shaped groove (11) of the base (1) and the through hole of the sliding block (2) to fix the sliding block (2) and the base (1). By adjusting the relative positions of the two rocker arms, rapid adjustment of the variable transmission ratio is achieved.

Description

Technical Field

[0001] The present application belongs to the technical field of aircraft control system design, and in particular relates to a triangular rocker arm with variable arm length. Background Art

[0002] In mechanical systems such as aircraft control systems, during the displacement transmission process, due to the limitations of transmission length, installation space and transmission ratio, the system generally has a rocker arm to change the direction or adjust the transmission ratio. The installation position and transmission ratio of the conventional rocker arm are set at the beginning of the redesign, and the transmission ratio of the entire system is determined after the mechanical system is assembled. However, due to the error of the rocker arm installation position and the inherent nonlinearity of the mechanical system, the assembled mechanical system will have a transmission ratio deviation and cannot meet the design requirements. The usual practice is to use the nonlinearity of the mechanical system to adjust the input state, but this method has a limited range for adjusting the transmission ratio. Utility Model Content

[0003] In order to solve at least one of the above technical problems, the present application designs a triangular rocker arm with variable arm length, which mainly includes:

[0004] A base, one end of which is connected to a joystick of an aircraft control system, and the other end of which is provided with a bar-shaped groove, and both sides of the bar-shaped groove are provided with bar-shaped holes parallel to the bar-shaped groove;

[0005] A slider, one end of which is connected to the control surface of the aircraft control system, and the other end of which has a guide rail, the guide rail being able to slide in the strip groove of the base, and the slider is also provided with a through hole at the end having the guide rail;

[0006] The bolt assembly can pass through the strip groove of the base and the through hole of the slider to fix the slider to the base.

[0007] Preferably, the bolt assembly includes a bolt and a nut, and the bolt is fixed at a designated position of the strip groove of the base by tightening the nut.

[0008] Preferably, the strip groove of the base is a T-shaped groove, and the guide rail of the slider is a T-shaped guide rail.

[0009] Preferably, the through hole of the sliding block has an internal thread.

[0010] Preferably, the base is connected to the operating rod via a pin.

[0011] Preferably, the slider is connected to the operating surface via a pin.

[0012] The present application solves the problem of using a rocker arm to adjust the transmission ratio of a system in a mechanical system, and realizes rapid adjustment of a variable transmission ratio by changing the relative positions of a base and a slider. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] Figure 1 It is a structural schematic diagram of a preferred embodiment of a triangular rocker arm with variable arm length in the present application.

[0014] Figure 2 This application Figure 1 A schematic exploded view of the structure of the illustrated embodiment.

[0015] Among them, 1-base, 11-strip groove, 12-strip hole, 2-slider, 21-guide rail, 22-through hole, 3-bolt, 4-bolt. DETAILED DESCRIPTION

[0016] In order to make the purpose, technical scheme and advantages of the implementation of this application clearer, the technical scheme in the implementation of this application will be described in more detail in combination with the drawings in the implementation of this application. In the drawings, the same or similar reference numerals throughout represent the same or similar elements or elements with the same or similar functions. The described implementation is a part of the implementation of this application, not all of the implementations. The implementation described below with reference to the drawings is exemplary and is intended to be used to explain this application, and cannot be understood as a limitation on this application. Based on the implementation in this application, all other implementations obtained by ordinary technicians in this field without making creative work are within the scope of protection of this application. The implementation of this application is described in detail below in combination with the drawings.

[0017] The present application provides a triangular rocker arm with a variable arm length, such as Figure 1-Figure 2 As shown, it mainly includes:

[0018] The base 1 has one end connected to the joystick of the aircraft control system, and the other end has a strip groove 11, and both sides of the strip groove 11 have strip holes 12 parallel to the strip groove 11;

[0019] The slider 2 has one end connected to the control surface of the aircraft control system and the other end having a guide rail 21, the guide rail 21 being able to slide in the strip groove 11 of the base 1, and the slider 2 is further provided with a through hole 22 at the end having the guide rail 21;

[0020] The bolt assembly can pass through the strip groove 11 of the base 1 and the through hole of the slider 2 to fix the slider 2 to the base 1 .

[0021] The present application divides the conventional triangular rocker arm into a trapezoidal base 1 and a triangular slider 2. The triangular base of the slider 2 can move on the trapezoidal upper base of the base 1, thereby changing the relative position of the vertex and base of the original triangular rocker arm, that is, changing the position of a connection point of the triangular rocker arm to the rocker arm shaft, thereby changing the transmission ratio of the triangular rocker arm. When adjusting the transmission ratio, loosen the bolt assembly used to fix the base 1 and the slider 2, so that the slider 2 slides on the base 1, adjust the base 1 and the slider 2 to the corresponding position, and the connection hole on the slider 2 connected to the control surface changes relative to the base 1 The position of the shaft connected to the joystick changes, thereby changing the transmission ratio of the triangular rocker arm.

[0022] In some optional embodiments, the bolt assembly includes a bolt 3 and a nut 4 , and the bolt 3 is fixed at a designated position of the strip groove 11 of the base 1 by tightening the nut 4 .

[0023] refer to Figure 1 and Figure 2 The bolt 3 cooperates with the nut 4, so that the position of the bolt 3 relative to the base 1 is fixed, and then the position of the slider 2 relative to the base 1 is fixed. It can be understood that one bolt assembly can be provided, or multiple bolt assemblies can be provided. When multiple bolt assemblies are provided, multiple through holes 22 are correspondingly provided on the slider 2.

[0024] In some optional embodiments, the strip groove 11 of the base 1 is a T-shaped groove, and the guide rail 21 of the slider 2 is a T-shaped guide rail. This embodiment ensures that the bottom edge of the slider 2 can only slide along the upper bottom edge of the base 1, and at the same time can ensure sufficient connection rigidity to prevent the slider 2 and the base 1 from breaking away from each other.

[0025] In some optional embodiments, the through hole 22 of the slider 2 has an internal thread.

[0026] In this embodiment, by setting the through hole 22 as a threaded hole with an internal thread to match the external thread of the bolt 3, when tightening the nut, the bolt 3 will further drive the slider 2 to be pressed against one side of the base 1 to ensure the connection stability between the slider 2 and the base 1.

[0027] In some optional embodiments, the base 1 is connected to the joystick via a pin.

[0028] In some optional embodiments, the slider 2 is connected to the control surface via a pin.

[0029] The present application solves the problem of using a rocker arm to adjust the transmission ratio of a mechanical system.

[0030] The above is only a specific implementation of the present application, but the protection scope of the present application is not limited thereto. Any changes or substitutions that can be easily thought of by a person skilled in the art within the technical scope disclosed in the present application should be included in the protection scope of the present application. Therefore, the protection scope of the present application shall be based on the protection scope of the claims.

Claims

1. A triangular rocker arm with variable arm length, characterized in that: include: A base (1) having one end connected to a joystick of an aircraft control system and the other end having a strip groove (11), and both sides of the strip groove (11) having strip holes (12) parallel to the strip groove (11); A slider (2) having one end connected to a control surface of an aircraft control system and the other end having a guide rail (21), wherein the guide rail (21) can slide in the strip groove (11) of the base (1), and the slider (2) is also provided with a through hole (22) at the end having the guide rail (21); The bolt assembly can pass through the strip groove (11) of the base (1) and the through hole of the slider (2) to fix the slider (2) to the base (1).

2. The triangular rocker arm with variable arm length as claimed in claim 1, characterized in that: The bolt assembly comprises a bolt (3) and a nut (4). By tightening the nut (4), the bolt (3) is fixed at a designated position of the strip groove (11) of the base (1).

3. The triangular rocker arm with variable arm length as claimed in claim 1, characterized in that: The strip groove (11) of the base (1) is a T-shaped groove, and the guide rail (21) of the slider (2) is a T-shaped guide rail.

4. The triangular rocker arm with variable arm length as claimed in claim 3, characterized in that: The through hole (22) of the sliding block (2) has an internal thread.

5. The triangular rocker arm with variable arm length as claimed in claim 1, characterized in that: The base (1) is connected to the operating rod via a pin shaft.

6. The triangular rocker arm with variable arm length as claimed in claim 1, characterized in that: The slider (2) is connected to the control surface via a pin shaft.

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