Engine power control steering engine

Abstract

The invention provides an engine power control steering engine, and relates to the technical field of automatic aircraft control, and the engine power control steering engine comprises a direct current motor which serves as a power source to provide power; the planetary harmonic assembly is used for transmitting a power source provided by the direct current motor; the speed measurement generator assembly is used for detecting the speed of the direct current motor and sending a detection result to the flight control system; the electromagnetic clutch assembly is used for transmitting a power source provided by the direct-current motor and is separated when the direct-current motor or the planetary harmonic assembly breaks down; the drum wheel friction clutch assembly is used for outputting power; and the potentiometer assembly is used for detecting the angular displacement of the drum friction clutch assembly and sending a detection result to the flight control system. The engine power control steering engine is compact in structure and convenient to control, deflection of an aircraft engine power control rod is accurately controlled by receiving electric signals from a flight control system, the purpose of adjusting the output power of an aircraft engine is achieved, and flight safety and effectiveness are guaranteed.

Description

Technical Field

[0001] The invention relates to the technical field of automatic aircraft control, and in particular provides an engine power control steering gear. Background Art

[0002] During the flight, the power of the aircraft generator needs to be adaptively adjusted at any time based on various factors such as climate conditions, aircraft load and fuselage altitude. Summary of the invention

[0003] The purpose of this application is to solve the power control problem of aircraft engines in the prior art in order to ensure the safety and effectiveness of flight, introduce an engine power control servo, and accurately control the deflection of the aircraft engine power control lever by receiving electrical signals from the flight control system, control parameters such as the jet throat outlet area and the angle of the worm wheel blades, so as to achieve the purpose of adjusting the output power of the aircraft engine.

[0004] In order to achieve the above object, the present invention adopts the following technical solution: an engine power control steering gear, the steering gear comprising:

[0005] A DC motor is used as a power source to provide power;

[0006] A planetary harmonic component is connected to the DC motor and is used to transmit a power source provided by the DC motor;

[0007] A tachometer generator assembly, connected to the planetary harmonic assembly, is used to detect the speed of the DC motor and send the detection result to the flight control system;

[0008] An electromagnetic clutch assembly connected to the output shaft of the planetary harmonic assembly for transmitting the power source provided by the DC motor and disengaging when the DC motor or the planetary harmonic assembly fails;

[0009] The drum friction clutch assembly is connected to the electromagnetic clutch assembly for power output;

[0010] The potentiometer assembly is connected to the drum friction clutch assembly and is used for detecting the angular displacement of the drum friction clutch assembly and sending the detection result to the flight control system.

[0011] The engine power control steering gear provided by the present invention also has the following technical characteristics: the DC motor is a dual-redundancy DC brushed motor or a DC brushless motor.

[0012] The engine power control servo provided by the present invention also has the following technical features: the planetary harmonic component includes a harmonic component and a planetary component embedded in the harmonic component, one end of the planetary component is connected to a DC motor, and is used to input the power source provided by the DC motor into the wave generator of the harmonic component, and the planetary component and the harmonic component are an integrated structure.

[0013] The engine power control servo provided by the present invention also has the following technical features: the tachometer generator assembly includes an anti-backlash gear connected to the planetary harmonic assembly and a tachometer generator connected to the anti-backlash gear, a positioning groove is provided on the output shaft of the tachometer generator, and a positioning hole is provided on the anti-backlash gear, and the positioning groove cooperates with the positioning hole to limit the circumferential displacement of the anti-backlash gear.

[0014] The engine power control steering gear provided by the present invention also has the following technical features: the electromagnetic clutch assembly includes an electromagnetic clutch housing, an electromagnetic clutch arranged in the electromagnetic clutch housing, a clutch block arranged at the active end of the electromagnetic clutch, an electromagnetic clutch bearing end cover arranged at the driven end of the electromagnetic clutch, an electromagnetic clutch pressure block connected to the electromagnetic clutch housing for limiting the axial position of the electromagnetic clutch, a first bearing arranged in the inner cavity of the electromagnetic clutch bearing end cover, an adjustment gasket for adjusting the air gap between the active end and the driven end of the electromagnetic clutch, and a second bearing arranged between the electromagnetic clutch bearing end cover and the electromagnetic clutch pressure block for supporting the driven end of the electromagnetic clutch; the electromagnetic clutch is connected to the output shaft of the planetary harmonic generator assembly by a key, the first bearing is used to support the output shaft of the planetary harmonic generator assembly, and the driven end of the electromagnetic clutch is connected to the output shaft of the drum friction clutch assembly by a key.

[0015] The engine power control servo provided by the present invention also has the following technical features: the drum friction clutch assembly includes an output shaft connected to the electromagnetic clutch assembly, a bearing end cover connected to the electromagnetic clutch assembly, a second bearing group arranged in the inner cavity of the bearing end cover, an anti-slip nut arranged on the output shaft for limiting the axial position of the output shaft, a friction clutch sleeved on the main shaft, a friction steel plate for limiting the position of the friction clutch and the slipping of the friction clutch, a first bearing group for supporting the friction clutch, a drum installed on the friction clutch, a disc spring installed between the output shaft and the friction steel plate for adjusting the slipping torque, a locking nut for applying force to the disc spring, and a potentiometer matching gear installed on the drum; the output shaft is provided with a shift ring for limiting the position of the friction clutch, the output shaft passes through the bearing end cover and is supported by the second bearing group, the second bearing group includes two bearings, and a clearance adjustment steel sleeve is arranged between the two bearings for adjusting the clearance between the two bearings; the potentiometer matching gear is connected to the potentiometer assembly.

[0016] The engine power control steering gear provided by the present invention also has the following technical characteristics: the potentiometer assembly includes a dual-redundancy structure consisting of a first potentiometer and a second potentiometer, and the first potentiometer and the second potentiometer are connected to the drum friction clutch assembly.

[0017] Beneficial Effects

[0018] The engine power control servo proposed in the present invention has a compact structure and is easy to control. By receiving an electrical signal from a flight control system, the deflection of an aircraft engine power control lever is accurately controlled to achieve the purpose of adjusting the output power of the aircraft engine, thereby ensuring the safety and effectiveness of flight. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] In order to more clearly illustrate the technical solutions of the embodiments of the present disclosure, the drawings required for use in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present disclosure. For ordinary technicians in this field, other drawings can be obtained based on these drawings without creative work.

[0020] Figure 1 This is a schematic diagram of the structure of the engine power control steering gear provided by the present invention;

[0021] Figure 2 This is a schematic diagram of the structure of the planetary harmonic component provided by the present invention;

[0022] Figure 3 A schematic diagram of the structure of a speed measuring engine assembly provided in an embodiment of the present invention;

[0023] Figure 4 A schematic diagram of the structure of a speed measuring engine provided by an embodiment of the present invention;

[0024] Figure 5 A schematic diagram of the structure of the backlash-eliminating gear provided in an embodiment of the present invention;

[0025] Figure 6 A schematic diagram of the structure of an electromagnetic clutch assembly provided in an embodiment of the present invention;

[0026] Figure 7 A schematic diagram of the structure of a drum friction clutch assembly provided by an embodiment of the present invention;

[0027] Figure 8 A schematic diagram of the structure of a potentiometer assembly provided in an embodiment of the present invention,

[0028] Among them, 1: DC motor; 2: planetary harmonic assembly; 2-1: planetary assembly; 2-2: harmonic assembly; 3: tachogenerator assembly; 3-1: tachogenerator; 3-2: anti-backlash gear; 4: electromagnetic clutch assembly; 4-1: clutch block; 4-2: electromagnetic clutch; 4-3: adjustment gasket; 4-4: second bearing; 4-5: electromagnetic clutch bearing end cover; 4-6: first bearing; 4-7: electromagnetic clutch pressure block; 4-8: electromagnetic clutch Clutch housing; 5: drum friction clutch assembly; 5-1: output shaft; 5-2: bearing end cover; 5-3: potentiometer matching gear; 5-4: drum; 5-5: friction steel plate; 5-6: locking nut; 5-7: disc spring; 5-8: friction clutch; 5-9: first bearing group; 5-10: second bearing group; 5-11: clearance adjustment steel sleeve; 5-12: anti-dropping nut; 6: potentiometer assembly; 6-1: first potentiometer; 6-2: second potentiometer. DETAILED DESCRIPTION

[0029] The present application is further described in detail below in conjunction with the accompanying drawings and examples, but it should be noted that these implementation methods are not limitations of the present application, and equivalent changes or substitutions in functions, methods, or structures made by ordinary technicians in the field based on these implementation methods are all within the scope of protection of the present application.

[0030] In the description of the embodiments of the present application, it should be understood that the terms "center", "longitudinal", "lateral", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", etc., indicating the orientation or position relationship, are based on the orientation or position relationship shown in the accompanying drawings, and are only for the convenience of describing the creation of the present application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the creation of the present application.

[0031] In addition, the terms "first", "second", "third", etc. are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Thus, a feature defined as "first", "second", etc. may explicitly or implicitly include one or more of the features. In the description of the invention of this application, unless otherwise specified, the meaning of "plurality" is two or more.

[0032] The terms "installed", "connected" and "connected" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the invention of this application can be understood by specific circumstances.

[0033] like Figure 1-8 As shown, an embodiment of the present application provides an engine power control steering gear, the steering gear comprising:

[0034] A DC motor is used as a power source to provide power;

[0035] A planetary harmonic component is connected to the DC motor and is used to transmit a power source provided by the DC motor;

[0036] A tachometer generator assembly, connected to the planetary harmonic assembly, is used to detect the speed of the DC motor and send the detection result to the flight control system;

[0037] An electromagnetic clutch assembly connected to the output shaft of the planetary harmonic assembly for transmitting the power source provided by the DC motor and disengaging when the DC motor or the planetary harmonic assembly fails;

[0038] The drum friction clutch assembly is connected to the electromagnetic clutch assembly for power output;

[0039] The potentiometer assembly is connected to the drum friction clutch assembly and is used for detecting the angular displacement of the drum friction clutch assembly and sending the detection result to the flight control system.

[0040] In some embodiments, the DC motor is a dual-redundant brushed DC motor or a brushless DC motor.

[0041] In some embodiments, the planetary harmonic component includes a harmonic component and a planetary component embedded in the harmonic component, one end of the planetary component is connected to a DC motor for inputting the power source provided by the DC motor into a wave generator of the harmonic component, and the planetary component and the harmonic component are an integrated structure.

[0042] In some embodiments, the tachometer generator assembly includes an anti-backlash gear connected to the planetary harmonic assembly and a tachometer generator connected to the anti-backlash gear, a positioning groove is provided on the output shaft of the tachometer generator, and a positioning hole is provided on the anti-backlash gear, and the positioning groove cooperates with the positioning hole to limit the circumferential displacement of the anti-backlash gear.

[0043] In some embodiments, the electromagnetic clutch assembly includes an electromagnetic clutch housing, an electromagnetic clutch arranged in the electromagnetic clutch housing, a clutch block arranged at the active end of the electromagnetic clutch, an electromagnetic clutch bearing end cover arranged at the driven end of the electromagnetic clutch, an electromagnetic clutch pressure block connected to the electromagnetic clutch housing for limiting the axial position of the electromagnetic clutch, a first bearing arranged in the inner cavity of the electromagnetic clutch bearing end cover, an adjusting gasket for adjusting the air gap between the active end and the driven end of the electromagnetic clutch, and a second bearing arranged between the electromagnetic clutch bearing end cover and the electromagnetic clutch pressure block for supporting the driven end of the electromagnetic clutch, the electromagnetic clutch is connected to the output shaft of the planetary harmonic generator assembly by a key, the first bearing is used to support the output shaft of the planetary harmonic generator assembly, and the driven end of the electromagnetic clutch is connected to the output shaft of the drum friction clutch assembly by a key.

[0044] In some embodiments, the drum friction clutch assembly includes an output shaft connected to the electromagnetic clutch assembly, a bearing end cover connected to the electromagnetic clutch assembly, a second bearing group arranged in the inner cavity of the bearing end cover, an anti-slip nut arranged on the output shaft for limiting the axial position of the output shaft, a friction clutch sleeved on the main shaft, a friction steel plate for limiting the position of the friction clutch and the slippage of the friction clutch, a first bearing group for supporting the friction clutch, a drum installed on the friction clutch, a disc spring installed between the output shaft and the friction steel plate for adjusting the slip torque, a locking nut for applying force to the disc spring, and a potentiometer matching gear installed on the drum; the output shaft is provided with a shift ring for limiting the position of the friction clutch, the output shaft passes through the bearing end cover and is supported by the second bearing group, the second bearing group includes two bearings, and a clearance adjustment steel sleeve is arranged between the two bearings for adjusting the clearance between the two bearings, and the potentiometer matching gear is connected to the potentiometer assembly.

[0045] In the above embodiment, the electromagnetic clutch and the drum friction clutch assembly can be used as a safety mechanism; when the DC motor or the planetary harmonic assembly fails, the active section of the electromagnetic clutch is disconnected from the driven end, and the pilot can manually operate the throttle lever, at which time the drum friction clutch assembly follows; when the electromagnetic clutch fails and gets stuck, the pilot can manually operate the throttle lever strongly, and the friction clutch and friction steel sheet in the drum friction clutch assembly slip, thereby ensuring flight safety.

[0046] In some embodiments, the potentiometer assembly includes a dual-redundancy structure consisting of a first potentiometer and a second potentiometer, and the first potentiometer and the second potentiometer are connected to the drum friction clutch assembly.

[0047] The working principle of the engine power control steering gear provided in the above embodiment is as follows:

[0048] After the engine power control servo receives the control signal from the automatic flight control system, the electromagnetic clutch assembly 6 is energized and attracted, and the DC motor 1 is driven to output torque and speed, which are reduced and transmitted to the drum friction clutch assembly 5 through the planetary harmonic reducer 2 to control the deflection of the aircraft engine power control lever, thereby regulating the output power of the aircraft engine; the tachometer generator assembly 3 and the potentiometer assembly 4 feed back the speed signal and position signal to the automatic flight control system, forming a closed loop to accurately control the deflection of the aircraft engine power control lever.

[0049] The above is only a preferred embodiment of the present application and is not intended to limit the present application. Any modifications, equivalent replacements and improvements made within the spirit and principles of the present application shall be included in the protection scope of the present application. The above is only a preferred implementation of the present application. It should be pointed out that for ordinary technicians in this technical field, several improvements and variations can be made without departing from the technical principles of the present application, and these improvements and variations should also be regarded as the protection scope of the present application.

Claims

1. An engine power control steering gear, characterized in that: The steering gear comprises: A DC motor is used as a power source to provide power; A planetary harmonic component is connected to the DC motor and is used to transmit a power source provided by the DC motor; A tachometer generator assembly, connected to the planetary harmonic assembly, is used to detect the speed of the DC motor and send the detection result to the flight control system; An electromagnetic clutch assembly connected to the output shaft of the planetary harmonic assembly for transmitting the power source provided by the DC motor and disengaging when the DC motor or the planetary harmonic assembly fails; The drum friction clutch assembly is connected to the electromagnetic clutch assembly for power output; The potentiometer assembly is connected to the drum friction clutch assembly and is used for detecting the angular displacement of the drum friction clutch assembly and sending the detection result to the flight control system.

2. The engine power control steering gear according to claim 1, characterized in that: The DC motor is a dual-redundancy DC brushed motor or a DC brushless motor.

3. The engine power control steering gear according to claim 1, characterized in that: The planetary harmonic component includes a harmonic component and a planetary component embedded in the harmonic component. One end of the planetary assembly is connected to a DC motor, and is used to input the power source provided by the DC motor into the wave generator of the harmonic assembly. The planetary assembly and the harmonic assembly are an integrated structure.

4. The engine power control steering gear according to claim 1, characterized in that: The tachometer generator assembly includes an anti-backlash gear connected to the planetary harmonic assembly and a tachometer generator connected to the anti-backlash gear. A positioning groove is provided on the output shaft of the tachometer generator, and a positioning hole is provided on the anti-backlash gear. The positioning groove cooperates with the positioning hole to limit the circumferential displacement of the anti-backlash gear.

5. The engine power control steering gear according to claim 1, characterized in that: The electromagnetic clutch assembly comprises an electromagnetic clutch housing, an electromagnetic clutch arranged in the electromagnetic clutch housing, a clutch block arranged at the active end of the electromagnetic clutch, an electromagnetic clutch bearing end cover arranged at the driven end of the electromagnetic clutch, an electromagnetic clutch pressure block connected to the electromagnetic clutch housing for limiting the axial position of the electromagnetic clutch, a first bearing arranged in the inner cavity of the electromagnetic clutch bearing end cover, an adjusting gasket for adjusting the air gap between the active end and the driven end of the electromagnetic clutch, and a second bearing arranged between the electromagnetic clutch bearing end cover and the electromagnetic clutch pressure block for supporting the driven end of the electromagnetic clutch. The electromagnetic clutch is connected to the output shaft of the planetary harmonic assembly via a key, and the first bearing is used to support the output shaft of the planetary harmonic assembly. The driven end of the electromagnetic clutch is connected to the output shaft of the drum friction clutch assembly through a key.

6. The engine power control steering gear according to claim 1, characterized in that: The drum friction clutch assembly includes an output shaft connected to the electromagnetic clutch assembly, a bearing end cover connected to the electromagnetic clutch assembly, a second bearing group arranged in the inner cavity of the bearing end cover, an anti-dropping nut arranged on the output shaft for limiting the axial position of the output shaft, a friction clutch sleeved on the main shaft, a friction steel plate for limiting the position of the friction clutch and the slipping of the friction clutch, a first bearing group for supporting the friction clutch, a drum installed on the friction clutch, a disc spring installed between the output shaft and the friction steel plate for adjusting the slipping torque, a locking nut for applying force to the disc spring, and a potentiometer matching gear installed on the drum. The output shaft is provided with a shift ring for limiting the position of the friction clutch. The output shaft passes through the bearing end cover and is supported by the second bearing set. The second bearing group includes two bearings and a clearance adjusting steel sleeve arranged between the two bearings for adjusting the clearance between the two bearings. The potentiometer is connected with the potentiometer assembly by a matching gear.

7. The engine power control steering gear according to claim 1, characterized in that: The potentiometer assembly includes a dual-redundancy structure consisting of a first potentiometer and a second potentiometer, and the first potentiometer and the second potentiometer are connected to the drum friction clutch assembly.

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