阅读说明：本技术 一种基于超越离合器的并联式双余度电动舵机 (Parallel type dual-redundancy electric steering engine based on overrunning clutch ) 是由 夏路 赵建伟 刘基玉 梁颖茜 于 2019-08-27 设计创作，主要内容包括：本发明属于飞行控制系统的电动舵机技术,设计一种基于超越离合器的并联式双余度电动舵机,第一伺服电机(5),第二伺服电机(19),三个面向输出轴顺时针旋转锁止的第一单向离合器(7)、第二单向离合器(17)和第三单向离合器(12),三个面对输出轴逆时针旋转锁止的第四单向离合器(6)、第五单向离合器(18)和第六单向离合器(11),四个使输出轴转动方向与伺服电机轴转动方向相同的第一减速传动机构(8)、第二减速传动机构(9)、第三减速传动机构(15)和第四减速传动机构(16),第一位置传感器(13),第二位置传感器(14)和输出轴(10)。(The invention belongs to the electric steering engine technology of a flight control system, and designs a parallel double-redundancy electric steering engine based on an overrunning clutch, which comprises a first servo motor (5), a second servo motor (19), a first one-way clutch (7), a second one-way clutch (17) and a third one-way clutch (12) which are locked by rotating clockwise facing to an output shaft, a fourth one-way clutch (6), a fifth one-way clutch (18) and a sixth one-way clutch (11) which are locked by rotating anticlockwise facing to the output shaft, four first speed reduction transmission mechanisms (8) which enable the rotation direction of the output shaft to be the same as the rotation direction of a servo motor shaft, a second speed reduction transmission mechanism (9), a third speed reduction transmission mechanism (15), a fourth speed reduction transmission mechanism (16), a first position sensor (13), a second position sensor (14) and an output shaft (10).)

1. The utility model provides a two redundancy electric steering engine of parallel based on freewheel clutch which characterized in that includes:

the servo motor comprises a first servo motor (5), a second servo motor (19), three first one-way clutches (7), second one-way clutches (17) and third one-way clutches (12) facing an output shaft and rotating and locking clockwise, three fourth one-way clutches (6), fifth one-way clutches (18) and sixth one-way clutches (11) facing the output shaft and rotating and locking anticlockwise, four first speed reduction transmission mechanisms (8), second speed reduction transmission mechanisms (9), third speed reduction transmission mechanisms (15) and fourth speed reduction transmission mechanisms (16) enabling the rotation direction of the output shaft to be identical to the rotation direction of a servo motor shaft, a first position sensor (13), a second position sensor (14) and an output shaft (10);

the first servo motor (5) is connected with the fourth one-way clutch (6) and the first one-way clutch (7), the fourth one-way clutch (6) is connected with the second speed reduction transmission mechanism (9), the first one-way clutch (7) is connected with the first speed reduction transmission mechanism (8), the second speed reduction transmission mechanism (9) is connected with the third one-way clutch (12), the first speed reduction transmission mechanism (8) is connected with the sixth one-way clutch (11), the second servo motor (19) is connected with the second one-way clutch (17), the fifth one-way clutch (18) is connected with the third speed reduction transmission mechanism (15), the second one-way clutch (17) is connected with the fourth speed reduction transmission mechanism (16), the third speed reduction transmission mechanism (15) is connected with the third one-way clutch (12), and the fourth speed reduction transmission mechanism (16) is connected with the sixth one-way clutch (11), the output shaft (10) is connected with a sixth one-way clutch (11), a third one-way clutch (12), a first position sensor (13) and a second position sensor (14).

2. A parallel dual-redundancy electric steering engine based on overrunning clutches as claimed in claim 1,

the first servo motor (5) and the fourth one-way clutch (6) are in interference fit, the first servo motor (5) and the first one-way clutch (7) are in interference fit, the fourth one-way clutch (6) and the second speed reduction transmission mechanism (9) are in gear engagement, and the first one-way clutch (7) and the first speed reduction transmission mechanism (8) are in gear engagement.

3. A parallel dual-redundancy electric steering engine based on overrunning clutches as claimed in claim 1,

the second reduction transmission mechanism (9) is in gear engagement with the third one-way clutch (12), the first reduction transmission mechanism (8) is in gear engagement with the sixth one-way clutch (11), the second servo motor (19) and the second one-way clutch (17) are in interference assembly, and the second servo motor (19) and the fifth one-way clutch (18) are in interference assembly.

4. A parallel dual-redundancy electric steering engine based on overrunning clutches as claimed in claim 1,

the fifth one-way clutch (18) is in gear engagement with the third speed reduction transmission mechanism (15), the second one-way clutch (17) is in gear engagement with the fourth speed reduction transmission mechanism (16), the third speed reduction transmission mechanism (15) is in gear engagement with the third one-way clutch (12), and the fourth speed reduction transmission mechanism (16) is in gear engagement with the sixth one-way clutch (11).

5. A parallel dual-redundancy electric steering engine based on overrunning clutches as claimed in claim 1,

the output shaft (10) and the sixth one-way clutch (11) are in interference fit, the output shaft (10) and the third one-way clutch (12) are in interference fit, the output shaft (10) is rigidly connected with the first position sensor (13), and the output shaft (10) is rigidly connected with the second position sensor (14).

6. A parallel dual-redundancy electric steering engine based on overrunning clutches as claimed in claim 1,

under the normal working condition, a first servo motor (5) and a second servo motor (19) rotate clockwise facing an output shaft and have the same rotating speed, a first one-way clutch (7), a second one-way clutch (17) and a sixth one-way clutch (11) are locked and are in a working state, a fourth one-way clutch (6), a fifth one-way clutch (18) and a third one-way clutch (12) are disengaged and are in an overrunning state, the output shaft (10) rotates clockwise, the output power is the sum of the power of the first servo motor (5) and the power of the second servo motor (19), and a first position sensor (13) and a second position sensor (14) feed back the position of the output shaft to form command following of the position of a steering engine; when the first servo motor (5) and the second servo motor (19) rotate anticlockwise towards the output shaft and rotate at the same speed, the first one-way clutch (7), the second one-way clutch (17) and the sixth one-way clutch (11) are disengaged and are in an overrunning state, the fourth one-way clutch (6), the fifth one-way clutch (18) and the third one-way clutch (12) are locked and are in a working state, the output shaft (10) rotates anticlockwise, the output power is the sum of the power of the first servo motor (5) and the power of the second servo motor (19), and the first position sensor (13) and the second position sensor (14) feed back the position of the output shaft to form command following of the position of the steering engine.

7. A parallel dual-redundancy electric steering engine based on overrunning clutches as claimed in claim 1,

under the abnormal working condition, when the first servo motor (5) and the second servo motor (19) rotate clockwise facing the output shaft but the rotation speed of the second servo motor (19) is slower than that of the first servo motor (5), the first one-way clutch (7) and the sixth one-way clutch (11) are locked and are in a working state, the fourth one-way clutch (6), the third one-way clutch (12), the fifth one-way clutch (18) and the second one-way clutch (17) are disengaged and are in an overrunning state, the output shaft (10) rotates clockwise, the output power is the power of the first servo motor (5), and the first position sensor (13) and the second position sensor (14) feed back the position of the output shaft to form command following of the position of a steering engine.

8. A parallel dual-redundancy electric steering engine based on overrunning clutches as claimed in claim 1,

under the abnormal working condition, when the first servo motor (5) and the second servo motor (19) rotate anticlockwise facing the output shaft but the rotation speed of the second servo motor (19) is slower than that of the first servo motor (5), the fourth one-way clutch (6) and the third one-way clutch (12) are locked and are in a working state, the first one-way clutch (7), the sixth one-way clutch (11), the fifth one-way clutch (18) and the second one-way clutch (17) are disengaged and are in an overrunning state, the output shaft (10) rotates anticlockwise, the output power is the power of the first servo motor (5), and the first position sensor (13) and the second position sensor (14) feed back the position of the output shaft to form command following of the position of a steering engine.

9. A parallel dual-redundancy electric steering engine based on overrunning clutches as claimed in claim 1,

under the abnormal working condition, when the first servo motor (5) and the second servo motor (19) rotate clockwise facing the output shaft but the rotating speed of the first servo motor (5) is slower than that of the second servo motor (19), the sixth one-way clutch (11) and the second one-way clutch (17) are locked and are in the working state, the first one-way clutch (7), the fourth one-way clutch (6), the third one-way clutch (12) and the fifth one-way clutch (18) are disengaged and are in the overrunning state, the output shaft (10) rotates clockwise, the output power is the power of the second servo motor (19), and the first position sensor (13) and the second position sensor (14) feed back the position of the output shaft to form the command following of the position of the steering engine.

10. A parallel dual-redundancy electric steering engine based on overrunning clutches as claimed in claim 1,

under the abnormal working condition, when the first servo motor (5) and the second servo motor (19) rotate anticlockwise facing the output shaft but the rotating speed of the first servo motor (5) is slower than that of the second servo motor (19), the third one-way clutch (12) and the fifth one-way clutch (18) are locked and are in a working state, the first one-way clutch (7), the fourth one-way clutch (6), the sixth one-way clutch (11) and the second one-way clutch (17) are disengaged and are in an overrunning state, the output shaft (10) rotates anticlockwise, the output power is the power of the second servo motor (19), and the first position sensor (13) and the second position sensor (14) feed back the position of the output shaft to form command following of the position of the steering engine.

Technical Field

The invention belongs to the electric steering engine technology of a flight control system, and particularly relates to a parallel dual-redundancy electric steering engine design based on an overrunning clutch.

Background

Fig. 1 is a structure of a conventional single-redundancy electric steering engine, which is composed of a servo motor 1, a reduction transmission mechanism 2, an output shaft 3 and a position sensor 4. The working principle is as follows: the servo motor 1 receives a control instruction, the output shaft 3 is driven to move through the speed reduction transmission mechanism 2, the output shaft 3 is fixedly connected with the position sensor 4, and the position sensor 4 feeds back the position of the steering engine to enable the electric steering engine to stably follow the control instruction.

The traditional single-redundancy electric steering engine is only provided with a transmission path from a motor output shaft to a steering engine output shaft, a plurality of transmission parts such as a bearing, a gear and a screw rod are distributed on the transmission path, the fault of any one transmission part can cause the fault of the steering engine, a mechanical structure of a servo motor also has single points such as a motor stator and an armature, the fault can cause the failure of the motor, the fault of the steering engine is further caused, and the safety of a flight control system and an airplane is seriously influenced.

In conclusion, the conventional single-redundancy electric steering engine has a plurality of single points on a transmission path and a mechanical structure, and faults of any single point can cause failure of flight control and even failure of an airplane, so that the problem that the multi-redundancy electric steering engine is adopted to reduce the single points so as to avoid the problem needs to be considered, the safety and the reliability of the steering engine and a flight control system are improved, and the fault rate of the steering engine is reduced.

Disclosure of Invention

The purpose of the invention is:

a parallel dual-redundancy electric steering engine based on an overrunning clutch is designed, the safety and reliability of the electric steering engine are improved, and the failure rate of the steering engine is reduced.

The technical scheme of the invention is as follows:

the utility model provides a two redundancy electric steering engine of parallel based on freewheel clutch, includes:

a first servo motor 5, a second servo motor 19, three first one-way clutches 7, second one-way clutches 17 and third one-way clutches 12 facing the output shaft and rotating and locking clockwise, three fourth one-way clutches 6, fifth one-way clutches 18 and sixth one-way clutches 11 facing the output shaft and rotating and locking anticlockwise, four first speed reduction transmission mechanisms 8, second speed reduction transmission mechanisms 9, third speed reduction transmission mechanisms 15 and fourth speed reduction transmission mechanisms 16 enabling the rotation direction of the output shaft to be the same as the rotation direction of a servo motor shaft, a first position sensor 13, a second position sensor 14 and an output shaft 10;

a first servo motor 5 and a fourth one-way clutch 6, the first one-way clutch 7 is connected, the fourth one-way clutch 6 is connected with the second reduction transmission mechanism 9, the first one-way clutch 7 is connected with the first reduction transmission mechanism 8, the second reduction transmission mechanism 9 is connected with the third one-way clutch 12, the first reduction transmission mechanism 8 is connected with the sixth one-way clutch 11, the second servo motor 19 is connected with the second one-way clutch 17 and the fifth one-way clutch 18, the fifth one-way clutch 18 is connected with the third reduction transmission mechanism 15, the second one-way clutch 17 is connected with the fourth reduction transmission mechanism 16, the third reduction transmission mechanism 15 is connected with the third one-way clutch 12, the fourth reduction transmission mechanism 16 is connected with the sixth one-way clutch 11, the output shaft 10 is connected with the sixth one-way clutch 11, the third one-way clutch 12, the first position sensor 13 and the second position sensor 14.

The first servo motor 5 and the fourth one-way clutch 6 are in interference fit, the first servo motor 5 and the first one-way clutch 7 are in interference fit, the fourth one-way clutch 6 and the second speed reduction transmission mechanism 9 are in gear engagement, and the first one-way clutch 7 and the first speed reduction transmission mechanism 8 are in gear engagement.

The second reduction transmission mechanism 9 and the third one-way clutch 12 are in gear engagement, the first reduction transmission mechanism 8 and the sixth one-way clutch 11 are in gear engagement, the second servo motor 19 and the second one-way clutch 17 are in interference fit, and the second servo motor 19 and the fifth one-way clutch 18 are in interference fit.

The fifth one-way clutch 18 is in gear engagement with the third reduction transmission mechanism 15, the second one-way clutch 17 is in gear engagement with the fourth reduction transmission mechanism 16, the third reduction transmission mechanism 15 is in gear engagement with the third one-way clutch 12, and the fourth reduction transmission mechanism 16 is in gear engagement with the sixth one-way clutch 11.

The output shaft 10 and the sixth one-way clutch 11 are in interference fit, the output shaft 10 and the third one-way clutch 12 are in interference fit, the output shaft 10 is rigidly connected with the first position sensor 13, and the output shaft 10 is rigidly connected with the second position sensor 14.

Under the normal working condition, the first servo motor 5 and the second servo motor 19 rotate clockwise facing the output shaft and have the same rotating speed, the first one-way clutch 7, the second one-way clutch 17 and the sixth one-way clutch 11 are locked and are in a working state, the fourth one-way clutch 6, the fifth one-way clutch 18 and the third one-way clutch 12 are disengaged and are in an overrunning state, the output shaft 10 rotates clockwise, the output power is the sum of the power of the first servo motor 5 and the power of the second servo motor 19, and the first position sensor 13 and the second position sensor 14 feed back the position of the output shaft to form the command following of the position of the steering engine; when the first servo motor 5 and the second servo motor 19 rotate anticlockwise towards the output shaft and the rotating speeds are the same, the first one-way clutch 7, the second one-way clutch 17 and the sixth one-way clutch 11 are disengaged and are in an overrunning state, the fourth one-way clutch 6, the fifth one-way clutch 18 and the third one-way clutch 12 are locked and are in a working state, the output shaft 10 rotates anticlockwise, the output power is the sum of the power of the first servo motor 5 and the power of the second servo motor 19, and the position of the output shaft is fed back by the first position sensor 13 and the second position sensor 14 to form command following of the position of the steering engine.

Under the abnormal working condition, when the first servo motor 5 and the second servo motor 19 rotate clockwise facing the output shaft but the rotation speed of the second servo motor 19 is slower than that of the first servo motor 5, the first one-way clutch 7 and the sixth one-way clutch 11 are locked and are in the working state, the fourth one-way clutch 6, the third one-way clutch 12, the fifth one-way clutch 18 and the second one-way clutch 17 are disengaged and are in the overrunning state, the output shaft 10 rotates clockwise, the output power is the power of the first servo motor 5, and the first position sensor 13 and the second position sensor 14 feed back the position of the output shaft to form the command following of the position of the steering engine.

Under the abnormal working condition, when the first servo motor 5 and the second servo motor 19 rotate anticlockwise towards the output shaft but the rotation speed of the second servo motor 19 is slower than that of the first servo motor 5, the fourth one-way clutch 6 and the third one-way clutch 12 are locked and are in the working state, the first one-way clutch 7, the sixth one-way clutch 11, the fifth one-way clutch 18 and the second one-way clutch 17 are disengaged and are in the overrunning state, the output shaft 10 rotates anticlockwise, the output power is the power of the first servo motor 5, and the first position sensor 13 and the second position sensor 14 feed back the position of the output shaft to form the command following of the position of the steering engine.

Under the abnormal working condition, when the first servo motor 5 and the second servo motor 19 rotate clockwise facing the output shaft but the rotation speed of the first servo motor 5 is slower than that of the second servo motor 19, the sixth one-way clutch 11 and the second one-way clutch 17 are locked and are in the working state, the first one-way clutch 7, the fourth one-way clutch 6, the third one-way clutch 12 and the fifth one-way clutch 18 are disengaged and are in the overrunning state, the output shaft 10 rotates clockwise, the output power is the power of the second servo motor 19, and the first position sensor 13 and the second position sensor 14 feed back the position of the output shaft to form the command following of the position of the steering engine.

Under the abnormal working condition, when the first servo motor 5 and the second servo motor 19 rotate anticlockwise towards the output shaft but the rotating speed of the first servo motor 5 is slower than that of the second servo motor 19, the third one-way clutch 12 and the fifth one-way clutch 18 are locked and are in a working state, the first one-way clutch 7, the fourth one-way clutch 6, the sixth one-way clutch 11 and the second one-way clutch 17 are disengaged and are in an overrunning state, the output shaft 10 rotates anticlockwise, the output power is the power of the second servo motor 19, and the first position sensor 13 and the second position sensor 14 feed back the position of the output shaft to form command following of the position of the steering engine.

The invention has the beneficial effects that:

the invention has simple structure, high reliability and good maintainability, has the capability of fault self-detection and fault reconstruction, can realize the capability of mechanical/electrical one-time fault-work, and can still realize the following of the position of the steering engine and a control instruction by controlling the other redundancy after one redundancy of the electric steering engine fails.

Drawings

Fig. 1 is a structure of a driven single-redundancy electric steering engine.

FIG. 2 shows the structure of the parallel dual-redundancy electric steering engine of the present invention.

Detailed Description

A parallel dual-redundancy electric steering engine based on an overrunning clutch, as shown in fig. 2, comprising:

the servo motor comprises a first servo motor 5, a second servo motor 19, three first one-way clutches 7, second one-way clutches 17 and third one-way clutches 12 facing the clockwise rotation locking of an output shaft, three fourth one-way clutches 6, fifth one-way clutches 18 and sixth one-way clutches 11 facing the anticlockwise rotation locking of the output shaft, four first speed reduction transmission mechanisms 8, second speed reduction transmission mechanisms 9, third speed reduction transmission mechanisms 15 and fourth speed reduction transmission mechanisms 16 enabling the rotation direction of the output shaft to be the same as the rotation direction of a servo motor shaft, a first position sensor 13, a second position sensor 14 and an output shaft 10. The first servo motor 5 is connected with the fourth one-way clutch 6, the first one-way clutch 7 is connected, the fourth one-way clutch 6 is connected with the second reduction transmission mechanism 9, the first one-way clutch 7 is connected with the first reduction transmission mechanism 8, the second reduction transmission mechanism 9 is connected with the third one-way clutch 12, the first reduction transmission mechanism 8 is connected with the sixth one-way clutch 11, the second servo motor 19 is connected with the second one-way clutch 17, the fifth one-way clutch 18 is connected with the third reduction transmission mechanism 15, the second one-way clutch 17 is connected with the fourth reduction transmission mechanism 16, the third reduction transmission mechanism 15 is connected with the third one-way clutch 12, the fourth reduction transmission mechanism 16 is connected with the third one-way clutch 12, the output shaft 10 is connected with the sixth one-way clutch 11, the third one-way clutch 12, the first position sensor 13 and the second position sensor 14.

The first servo motor 5 and the fourth one-way clutch 6 are in interference fit, the first servo motor 5 and the first one-way clutch 7 are in interference fit, the fourth one-way clutch 6 and the second speed reduction transmission mechanism 9 are in gear engagement, and the first one-way clutch 7 and the first speed reduction transmission mechanism 8 are in gear engagement. The second reduction transmission mechanism 9 and the third one-way clutch 12 are in gear engagement, the first reduction transmission mechanism 8 and the sixth one-way clutch 11 are in gear engagement, the second servo motor 19 and the second one-way clutch 17 are in interference fit, and the second servo motor 19 and the fifth one-way clutch 18 are in interference fit. The fifth one-way clutch 18 is in gear engagement with the third reduction transmission mechanism 15, the second one-way clutch 17 is in gear engagement with the fourth reduction transmission mechanism 16, the third reduction transmission mechanism 15 is in gear engagement with the third one-way clutch 12, and the fourth reduction transmission mechanism 16 is in gear engagement with the sixth one-way clutch 11. The output shaft 10 and the sixth one-way clutch 11 are in interference fit, the output shaft 10 and the third one-way clutch 12 are in interference fit, the output shaft 10 is rigidly connected with the first position sensor 13, and the output shaft 10 is rigidly connected with the second position sensor 14.

The working principle is as follows: under the normal working condition, the first servo motor 5 and the second servo motor 19 rotate clockwise facing the output shaft and have the same rotating speed, the first one-way clutch 7, the second one-way clutch 17 and the sixth one-way clutch 11 are locked and are in a working state, the fourth one-way clutch 6, the fifth one-way clutch 18 and the third one-way clutch 12 are disengaged and are in an overrunning state, the output shaft 10 rotates clockwise, the output power is the sum of the power of the first servo motor 5 and the power of the second servo motor 19, and the first position sensor 13 and the second position sensor 14 feed back the position of the output shaft to form the command following of the position of the steering engine; when the first servo motor 5 and the second servo motor 19 rotate anticlockwise towards the output shaft and the rotating speeds are the same, the first one-way clutch 7, the second one-way clutch 17 and the sixth one-way clutch 11 are disengaged and are in an overrunning state, the fourth one-way clutch 6, the fifth one-way clutch 18 and the third one-way clutch 12 are locked and are in a working state, the output shaft 10 rotates anticlockwise, the output power is the sum of the power of the first servo motor 5 and the power of the second servo motor 19, and the position of the output shaft is fed back by the first position sensor 13 and the second position sensor 14 to form command following of the position of the steering engine.

Under the abnormal working condition, when the first servo motor 5 and the second servo motor 19 rotate clockwise facing the output shaft but the rotation speed of the second servo motor 19 is slower than that of the first servo motor 5, the first one-way clutch 7 and the sixth one-way clutch 11 are locked and are in the working state, the fourth one-way clutch 6, the third one-way clutch 12, the fifth one-way clutch 18 and the second one-way clutch 17 are disengaged and are in the overrunning state, the output shaft 10 rotates clockwise, the output power is the power of the first servo motor 5, and the first position sensor 13 and the second position sensor 14 feed back the position of the output shaft to form the command following of the position of the steering engine; when the first servo motor 5 and the second servo motor 19 rotate anticlockwise facing the output shaft but the rotation speed of the second servo motor 19 is slower than that of the first servo motor 5, the fourth one-way clutch 6 and the third one-way clutch 12 are locked and are in a working state, the first one-way clutch 7, the sixth one-way clutch 11, the fifth one-way clutch 18 and the second one-way clutch 17 are disengaged and are in an overrunning state, the output shaft 10 rotates anticlockwise, the output power is the power of the first servo motor 5, and the first position sensor 13 and the second position sensor 14 feed back the position of the output shaft to form command following of the position of the steering engine;

when the first servo motor 5 and the second servo motor 19 rotate clockwise facing the output shaft but the rotating speed of the first servo motor 5 is slower than that of the second servo motor 19, the sixth one-way clutch 11 and the second one-way clutch 17 are locked and are in a working state, the first one-way clutch 7, the fourth one-way clutch 6, the third one-way clutch 12 and the fifth one-way clutch 18 are disengaged and are in an overrunning state, the output shaft 10 rotates clockwise, the output power is the power of the second servo motor 19, and the first position sensor 13 and the second position sensor 14 feed back the position of the output shaft to form command following of the position of the steering engine; when the first servo motor 5 and the second servo motor 19 rotate anticlockwise facing the output shaft but the rotating speed of the first servo motor 5 is slower than that of the second servo motor 19, the third one-way clutch 12 and the fifth one-way clutch 18 are locked and are in a working state, the first one-way clutch 7, the fourth one-way clutch 6, the sixth one-way clutch 11 and the second one-way clutch 17 are disengaged and are in an overrunning state, the output shaft 10 rotates anticlockwise, the output power is the power of the second servo motor 19, and the first position sensor 13 and the second position sensor 14 feed back the position of the output shaft to form command following of the position of the steering engine.