Aircraft variable-speed accelerator platform with rotation transformation ratio of input push rod to output rod

By designing the arc-shaped slide structure and adjustable cam base and slider, the rotation ratio of the input push rod and the output rod of the aircraft throttle table is customized and adjustable, solving the problem of insufficient feel and control accuracy in the fine control section of the existing throttle table, and improving the mechanical service life and operating accuracy of the throttle table.

CN222663770UActive Publication Date: 2025-03-25CHENGDU AIRCRAFT IND GRP ELECTRONIC TECH CO
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Patent Information

Application Number
CN202421396338.9
Authority / Receiving Office
CN · China
Patent Type
Utility models(China)
Current Assignee / Owner
Filing Date
2024-06-19
Publication Date
2025-03-25
Estimated Expiration
2034-06-19

AI Technical Summary

Technical Problem

The existing mechanical throttle table cannot provide better feel and control accuracy in the throttle control section that requires fine adjustment, and lacks the function of changing the input and output angle.

Method used

An aircraft speed throttle table with rotational ratio of input push rod and output rod is designed. The relative position of the slider and input push rod and output rod are controlled through the arc-shaped slide chute structure, so as to achieve custom-tuning and adjustable change ratio. The design adopts a cam base and slider with adjustable position and shape, combining the special design method of transition sections and diameter-depth changes to ensure seamless and smooth connection between the ratio ranges.

Benefits of technology

The rotation ratio of the throttle table input push rod and the output rod is customized and adjustable, which improves the service life and operating accuracy of the machinery, eliminates the risk of jamming and side gaps, and enhances the practicality and reliability of the system.

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Abstract

The utility model discloses an airplane variable-speed accelerator platform with the rotation transformation ratio of an input push rod and an output rod. The airplane variable-speed accelerator platform comprises the input push rod, the output rod, a cam base, a sliding block and a connecting rod. An output rod is rotatably arranged at one end of the input push rod, a cam base is arranged on one side of the input push rod, a sliding block is arranged between the cam base and the input push rod, cam followers are fixedly connected to the two sides of the sliding block respectively, and one side of the sliding block is slidably connected with the input push rod through the cam followers. The sliding block slides along the radial direction of the input push rod; an arc-shaped sliding groove is formed in the side, close to the sliding block, of the cam base, and the other side of the sliding block is in sliding connection with the arc-shaped sliding groove through a cam follower. The sliding block is connected with the output rod through a connecting rod. The relative positions of the sliding block, the input push rod and the output rod are controlled through the arc-shaped sliding groove structure, so that the transformation ratio can be customized and adjusted, and good practicability is achieved.
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Description

Technical Field

[0001] The utility model belongs to the technical field of throttle platforms for aircraft, and in particular relates to an aircraft speed-changing throttle platform with a rotation ratio of an input push rod and an output rod. Background Art

[0002] The throttle platform is an important part of the throttle control system and an important interface for the pilot to control the engine. The manual throttle control system mostly uses a throttle platform with mechanical transmission. The pilot generates mechanical output by manipulating the throttle platform, which is transmitted mechanically (such as a flexible shaft cable) to drive the throttle actuator to move and adjust the throttle. In the design process of the throttle platform, the input and output push rods of the existing mechanical throttle platform are combined into a whole rod, and the input and output angles are synchronized at 1:1, without the function of changing the input and output angle ratio. In the throttle control section that requires fine regulation, it cannot provide better feel and control accuracy. Therefore, it is necessary to add a design of a speed change ratio of the input push rod and the output rod. Utility Model Content

[0003] The utility model aims to provide an aircraft speed-changing throttle platform with a rotation ratio of an input push rod and an output rod, aiming to realize the customization and adjustment of the rotation ratio of the input push rod and the output rod of the aircraft throttle platform.

[0004] The utility model is mainly realized through the following technical solutions:

[0005] An aircraft speed change throttle station with a rotational variable ratio of an input push rod and an output rod comprises an input push rod, an output rod, a cam base, a slider and a connecting rod; the output rod is rotatably provided at one end of the input push rod, and a cam base is provided at one side of the input push rod, a slider is provided between the cam base and the input push rod, cam followers are respectively fixedly connected at both sides of the slider, one side of the slider is slidably connected to the input push rod through the cam follower, and can only slide along the radial direction of the input push rod; an arcuate slide groove is provided on the side of the cam base close to the slider, and the other side of the slider is slidably connected to the arcuate slide groove through the cam follower; the slider is connected to the output rod through a connecting rod.

[0006] In order to better realize the utility model, further, the input push rod is provided with a waist-shaped groove in the radial direction, and two cam followers are provided on one side of the slider along the length direction of the waist-shaped groove, and the two cam followers are respectively slidably connected with the waist-shaped groove.

[0007] In order to better realize the utility model, further, the input push rod, the output rod and the cam base are arranged in sequence from left to right, and the output rod is rotatably arranged between the cam base and the input push rod.

[0008] In order to better realize the utility model, further, a rotating shaft is provided at one side of the cam base, and the ends of the input push rod and the output rod are rotatably sleeved on the rotating shaft respectively.

[0009] In order to better realize the utility model, further, the ends of the slider and the output rod on the same side are respectively provided with supports, and the two ends of the connecting rod are respectively hinged to the supports of the slider and the output rod.

[0010] In order to better realize the utility model, further, the arc-shaped slide groove includes a transition section and a diameter-depth variation section.

[0011] In order to better realize the utility model, further, a friction mechanism is arranged on the inner side of the input push rod, the friction mechanism comprises a friction part and a friction plate, the friction part is fixedly arranged on the input push rod, and the friction plate is provided with a plurality of sector-shaped contact surfaces with different roughness corresponding to the friction part.

[0012] The beneficial effects of the utility model are as follows:

[0013] The utility model controls the relative position of the slider and the input push rod and the output rod through an arc-shaped slide groove structure to achieve customized and adjustable ratio, and has good practicality. The utility model uses a cam base and a slider with adjustable position and shape, which can achieve translational adjustment of the ratio area within a certain range and overall adjustment of the global ratio. When designing the arc-shaped slide groove, the utility model adopts a special design method of the transition section and the diameter-depth change section, uses the method of spline tangent splicing of arc tangents, and follows the constraints of the theoretical equation, so as to achieve seamless and smooth connection between ratio intervals, eliminate the risk of jamming, and have no side clearance, effectively improve the service life of the machine and the operating accuracy, and has good practicality. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 It is a schematic diagram of the overall structure of the utility model;

[0015] Figure 2 It is a schematic diagram of the connection structure of the input push rod, the output rod and the cam base;

[0016] Figure 3 for Figure 2 The main view;

[0017] Figure 4 for Figure 2 Rear view of.

[0018] Among them: 1-input push rod, 2-output rod, 3-cam base, 4-slider, 5-connecting rod, 6-main body. DETAILED DESCRIPTION

[0019] Embodiment 1:

[0020] An aircraft speed-changing throttle platform with a rotation ratio of an input push rod and an output rod, such as Figure 1 As shown, it includes an input push rod 1, an output rod 2, a cam base 3, a slider 4 and a connecting rod 5; the output rod 2 is rotatably arranged at one end of the input push rod 1, and a cam base 3 is arranged on one side of the input push rod 1, a slider 4 is arranged between the cam base 3 and the input push rod 1, and cam followers are fixedly connected to both sides of the slider 4, one side of the slider 4 is slidably connected to the input push rod 1 through the cam follower, and slides along the radial direction of the input push rod 1; an arc-shaped slide groove is arranged on the side of the cam base 3 close to the slider 4, and the other side of the slider 4 is slidably connected to the arc-shaped slide groove through the cam follower; the slider 4 is connected to the output rod 2 through the connecting rod 5. Further, the ends of the slider 4 and the output rod 2 on the same side are respectively provided with supports, and the two ends of the connecting rod 5 are respectively hinged to the supports of the slider 4 and the output rod 2.

[0021] Preferably, if Figure 2-Figure 4 As shown, the input push rod 1 is provided with a waist-shaped groove in the radial direction, and two cam followers are provided on one side of the slider 4 along the length direction of the waist-shaped groove, and the two cam followers are respectively slidably connected with the waist-shaped groove.

[0022] Preferably, the arc-shaped slide groove includes a transition section and a diameter-depth variation section. The cam follower on the slider 4 moves in the arc-shaped slide groove to produce radial fluctuations. At this time, the slider 4 drives the output rod 2 to make an additional rotation through the connecting rod 5, which is superimposed on the original rotation, thereby realizing the angle ratio ratio of the output rod 2 and the input push rod 1.

[0023] Specifically, after rigorous theoretical design of the arc-shaped slideway, the rotation axis of the cam base 3 is used as the coordinate origin, and the relationship between the polar coordinate equation (r, θ) of the center line of the arc-shaped slideway is as follows:

[0024] r=f(θ)

[0025] r(0)=R0

[0026]

[0027]

[0028] Where: k is the input rod angle θ at the current angle θ in Angle θ with output rod out The proportion of

[0029] R0 is the initial position radius,

[0030] At small angles, C is a fixed coefficient that is related to the geometric relationship of the hinge point in the mechanical structure and can be measured and calculated in the CAD model.

[0031] Secondly, in order to meet the physical requirements of the cam follower and the arc-shaped slideway having a unique solution, no jamming, and no side clearance, it is also necessary to make the radius of curvature ρ of the center line at any point greater than the diameter D of the cam follower. Therefore, a special design method for the transition section and the diameter-depth change section is required.

[0032] Preferably, a friction mechanism is provided inside the input push rod 1, and the friction mechanism includes a friction part and a friction plate, and the friction plate is mounted on the cam base 3. The friction part is fixedly provided on the input push rod 1, and the friction plate is provided with a plurality of sector-shaped contact surfaces with different roughnesses corresponding to the friction part. At the same time, the throttle platform has the problem of sudden change of the variable segmented operating force during operation. Therefore, the utility model adopts sector-shaped contact surfaces with different roughnesses to form the characteristics of segmented change of friction force, and complements and offsets the sudden change of force to achieve the effect of making up the combined force, thereby improving the reliability and stability of the system operation.

[0033] During use of the utility model, as the input push rod 1 rotates, the cam follower on one side of the slider 4 slides along the arc-shaped slot, and as the radial depth of the arc-shaped slot changes, the cam follower on the other side of the slider 4 slides radially along the input push rod 1, and the slider 4 drives the output rod 2 to rotate through the connecting rod 5, thereby adjusting the rotation angle ratio of the input push rod 1 and the output rod 2 to form a variable ratio throttle platform.

[0034] Embodiment 2:

[0035] An aircraft speed-changing throttle platform with a rotation ratio of an input push rod and an output rod, such as Figure 1-Figure 4 As shown, it includes a main body 6, an input push rod 1, an output rod 2, a cam base 3, a slider 4 and a connecting rod 5; the cam base 3 is fixedly arranged on the main body 6, and the input push rod 1 and the output rod 2 are arranged on the outside of the cam base 3. The ends of the input push rod 1 and the output rod 2 are rotatably connected, and the whole is rotatably arranged on the main body 6. A slider 4 is arranged between the cam base 3 and the input push rod 1, and an arc-shaped slide groove is arranged on the side of the cam base 3 close to the slider 4, and a hollow waist-shaped groove is arranged radially on the input push rod 1. One side of the slider 4 is slidably connected to the arc-shaped slide groove through a cam follower, and the other side is slidably connected to the waist-shaped groove through two adjacent cam followers.

[0036] Preferably, a friction mechanism is provided on the inner side of the input push rod 1, and the friction mechanism includes a friction part and a friction plate. The friction part is fixedly provided on the input push rod 1, and a friction plate is correspondingly provided on the main body 6. The friction plate is provided with a plurality of sector-shaped contact surfaces with different roughness corresponding to the friction part.

[0037] During the use of the utility model, the slider 4 is clamped between the cam base 3 and the input push rod 1 and can only move in a horizontal direction. There are two cam followers on the front of the slider 4, which cooperate with the vertical waist groove on the input push rod 1, so that the slider 4 can only slide radially relative to the input push rod 1. There is a cam follower on the back of the slider 4, which cooperates with the arc-shaped slide groove on the cam base 3. When the input push rod 1 rotates, the slider 4 is driven to rotate synchronously. At the same time, the cam follower on the back of the slider 4 moves in the arc-shaped slide groove to generate radial undulation. When the slider 4 generates radial undulation, it drives the output rod 2 to make additional rotations through the connecting rod 5, which is superimposed on the original rotation, thereby realizing the angular ratio ratio of the output rod 2 and the input push rod 1.

[0038] The utility model controls the relative position of the slider 4 and the input push rod 1 and the output rod 2 through the arc-shaped slide structure to achieve customized adjustable ratio. The utility model uses a cam base 3 and a slider 4 with adjustable position and shape to achieve adjustable translation of the ratio area within a certain range and overall adjustable global ratio. When designing the arc-shaped slide, a special design method of the transition section and the diameter-depth change section is adopted, and the method of spline tangent splicing is used, accompanied by the constraints of the theoretical equation, to achieve seamless and smooth connection between the ratio intervals, eliminate the risk of jamming, and have no side clearance, effectively improve the service life of the machine and the operating accuracy, and have good practicality.

[0039] The above description is only a preferred embodiment of the present invention and does not limit the present invention in any form. Any simple modification or equivalent changes made to the above embodiments based on the technical essence of the present invention shall fall within the protection scope of the present invention.

Claims

1. An aircraft speed-changing throttle station with a rotation ratio of an input push rod and an output rod, characterized in that: The invention comprises an input push rod (1), an output rod (2), a cam base (3), a slider (4) and a connecting rod (5); the output rod (2) is rotatably arranged at one end of the input push rod (1), and a cam base (3) is arranged at one side of the input push rod (1); a slider (4) is arranged between the cam base (3) and the input push rod (1); cam followers are respectively fixedly connected to the two sides of the slider (4); one side of the slider (4) is slidably connected to the input push rod (1) through the cam follower and can only slide along the radial direction of the input push rod (1); an arc-shaped slide groove is arranged on the side of the cam base (3) close to the slider (4); the other side of the slider (4) is slidably connected to the arc-shaped slide groove through the cam follower; the slider (4) is connected to the output rod (2) through a connecting rod (5).

2. The aircraft speed change throttle station with a rotation ratio of an input push rod and an output rod according to claim 1, characterized in that: The input push rod (1) is provided with a waist-shaped groove in the radial direction, and one side of the sliding block (4) is provided with two cam followers along the length direction of the waist-shaped groove, and the two cam followers are respectively slidably connected to the waist-shaped groove.

3. The aircraft speed-changing throttle station with a rotation ratio of an input push rod and an output rod according to claim 1, characterized in that: The input push rod (1), the output rod (2) and the cam base (3) are arranged in sequence from left to right, and the output rod (2) is rotatably arranged between the cam base (3) and the input push rod (1).

4. The aircraft speed-changing throttle station with a rotation ratio of an input push rod and an output rod according to claim 3, characterized in that: A rotating shaft is provided on one side of the cam base (3), and the ends of the input push rod (1) and the output rod (2) are respectively rotatably sleeved on the rotating shaft.

5. The aircraft speed-changing throttle station with a rotation ratio of an input push rod and an output rod according to claim 1, characterized in that: The ends of the slider (4) and the output rod (2) on the same side are respectively provided with supports, and the two ends of the connecting rod (5) are respectively hinged to the supports of the slider (4) and the output rod (2).

6. An aircraft speed-changing throttle station with a rotation ratio of an input push rod and an output rod according to any one of claims 1 to 5, characterized in that: The arc-shaped slide groove includes a transition section and a diameter-depth changing section.

7. The aircraft speed-changing throttle station with a rotation ratio of an input push rod and an output rod according to claim 1, characterized in that: A friction mechanism is arranged on the inner side of the input push rod (1), the friction mechanism comprising a friction portion and a friction plate, a friction plate is arranged on a side of the cam base (3) close to the input push rod (1), the friction portion is fixedly arranged on the input push rod (1), and the friction plate is provided with a plurality of sector-shaped contact surfaces with different roughnesses corresponding to the friction portion.