CN111120581A - Transmission structure of dual-redundancy electric mechanism - Google Patents
Transmission structure of dual-redundancy electric mechanism Download PDFInfo
- Publication number
- CN111120581A CN111120581A CN201911304583.6A CN201911304583A CN111120581A CN 111120581 A CN111120581 A CN 111120581A CN 201911304583 A CN201911304583 A CN 201911304583A CN 111120581 A CN111120581 A CN 111120581A
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- China
- Prior art keywords
- gear
- worm
- bevel gear
- transmission assembly
- motor
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- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
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Classifications
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16H—GEARING
- F16H1/00—Toothed gearings for conveying rotary motion
- F16H1/02—Toothed gearings for conveying rotary motion without gears having orbital motion
- F16H1/20—Toothed gearings for conveying rotary motion without gears having orbital motion involving more than two intermeshing members
- F16H1/22—Toothed gearings for conveying rotary motion without gears having orbital motion involving more than two intermeshing members with a plurality of driving or driven shafts; with arrangements for dividing torque between two or more intermediate shafts
- F16H1/222—Toothed gearings for conveying rotary motion without gears having orbital motion involving more than two intermeshing members with a plurality of driving or driven shafts; with arrangements for dividing torque between two or more intermediate shafts with non-parallel axes
- F16H1/225—Toothed gearings for conveying rotary motion without gears having orbital motion involving more than two intermeshing members with a plurality of driving or driven shafts; with arrangements for dividing torque between two or more intermediate shafts with non-parallel axes with two or more worm and worm-wheel gearings
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16H—GEARING
- F16H57/00—General details of gearing
- F16H57/02—Gearboxes; Mounting gearing therein
- F16H57/021—Shaft support structures, e.g. partition walls, bearing eyes, casing walls or covers with bearings
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16H—GEARING
- F16H57/00—General details of gearing
- F16H57/02—Gearboxes; Mounting gearing therein
- F16H57/023—Mounting or installation of gears or shafts in the gearboxes, e.g. methods or means for assembly
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16H—GEARING
- F16H57/00—General details of gearing
- F16H57/02—Gearboxes; Mounting gearing therein
- F16H57/039—Gearboxes for accommodating worm gears
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02K—DYNAMO-ELECTRIC MACHINES
- H02K7/00—Arrangements for handling mechanical energy structurally associated with dynamo-electric machines, e.g. structural association with mechanical driving motors or auxiliary dynamo-electric machines
- H02K7/10—Structural association with clutches, brakes, gears, pulleys or mechanical starters
- H02K7/116—Structural association with clutches, brakes, gears, pulleys or mechanical starters with gears
- H02K7/1163—Structural association with clutches, brakes, gears, pulleys or mechanical starters with gears where at least two gears have non-parallel axes without having orbital motion
- H02K7/1166—Structural association with clutches, brakes, gears, pulleys or mechanical starters with gears where at least two gears have non-parallel axes without having orbital motion comprising worm and worm-wheel
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16H—GEARING
- F16H57/00—General details of gearing
- F16H2057/0081—Fixing of, or adapting to transmission failure
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16H—GEARING
- F16H57/00—General details of gearing
- F16H57/02—Gearboxes; Mounting gearing therein
- F16H2057/02034—Gearboxes combined or connected with electric machines
Abstract
The invention discloses a transmission structure of a dual-redundancy electric mechanism, which comprises a first motor, a first gear transmission assembly, a worm gear assembly, a rocker arm, a second motor and a second gear transmission assembly, wherein the first motor is connected with the first gear transmission assembly; the first motor is in transmission connection with the first gear transmission assembly, the second motor is in transmission connection with the second gear transmission assembly, the rocker arm is respectively in movable connection with the first gear transmission assembly and the second gear transmission assembly, and the first gear transmission assembly and the second gear transmission assembly are respectively separated from and meshed with the worm gear assembly through swinging the rocker arm.
Description
Technical Field
The invention belongs to the technical field of electric mechanism transmission, and particularly relates to a transmission structure of a dual-redundancy electric mechanism.
Background
In an aerospace electromechanical system, an electric mechanism drives a load to rotate through a motor drive transmission structure, and meanwhile, a rotation angle is fed back to a superior system, so that the aerospace electromechanical system is a key execution component and has high requirement on reliability. Currently, the use of dual-redundancy electric mechanisms is an effective way to improve reliability. The existing dual-redundancy electric mechanisms mostly adopt a differential or fault-tolerant motor method.
The differential can effectively avoid force dispute during simultaneous working, but increases the rotational inertia, the inertia moment and the weight, and has a complex structure. After one path of winding of the fault-tolerant motor fails, other paths of windings can still work, but the reliability of the motor can only be increased, and when a transmission mechanism at the rear stage of the motor fails, the electric mechanism cannot work normally.
Disclosure of Invention
In view of this, the invention provides a transmission structure of a dual-redundancy electric mechanism, which can solve the problems of increased rotational inertia and the like caused by the traditional dual-redundancy electric mechanism, improve the reliability of the transmission mechanism, and simplify the transmission structure.
The technical scheme for realizing the invention is as follows:
a transmission structure of a dual-redundancy electric mechanism comprises a first motor, a first gear transmission assembly, a worm gear assembly, a rocker arm, a second motor and a second gear transmission assembly;
the first motor is in transmission connection with the first gear transmission assembly, the second motor is in transmission connection with the second gear transmission assembly, the rocker arm is respectively in movable connection with the first gear transmission assembly and the second gear transmission assembly, and the first gear transmission assembly and the second gear transmission assembly are respectively separated from and meshed with the worm gear assembly through swinging the rocker arm.
Further, the first gear transmission assembly and the second gear transmission assembly respectively comprise a straight gear, a first bevel gear, a second bevel gear, a worm rack and a worm;
one end of the worm rack is of a sleeve structure, an extending shaft is arranged at the sleeve end, the other end of the worm rack is a bearing seat end, and a rectangular groove is formed in the bearing seat end;
an extension shaft is arranged along the axis of the first bevel gear;
the straight gear is coaxially and fixedly connected with an extending shaft of the first bevel gear through a pin, the second bevel gear is coaxially and fixedly connected with one end of a worm, a sleeve end of the worm frame is sleeved on the extending shaft of the first bevel gear, the extending shaft of the sleeve end and the second bevel gear are coaxially and movably connected through a bearing, the other end of the worm is movably connected with a bearing seat end of the worm frame through a bearing, and the first bevel gear is meshed with the gear of the second bevel gear.
Furthermore, the rocker arm swings around the fixed shaft, two sides of the rocker arm are respectively provided with a roller, and the distance between the two rollers and the fixed shaft is equal; the two rollers are respectively embedded in the rectangular grooves of the worm rack.
Has the advantages that:
1. the transmission structure of the invention consists of two sets of independent bevel gear-worm transmission assemblies and a common worm gear output shaft, and two paths of motors can respectively drive respective worms to rotate, are independent from each other and are not influenced by the other path of fault.
2. The bevel gear-worm transmission assembly of the invention is connected with the worm frame through a bearing, and the worm can rotate around the axis of the first bevel gear while rotating by itself.
3. The rocker arm of the transmission structure is driven by external power, and the swinging of the rocker arm drives two sets of worms to swing around respective first bevel gear axes, so that the two ways of worms are separated from and meshed with the worm wheel output shaft.
4. The dual-redundancy electric mechanism with the transmission structure does not bring any additional rotational inertia and inertia moment to the output shaft, and has a simple structure compared with dual-redundancy schemes such as a differential mechanism and the like.
Drawings
Fig. 1 is a schematic view of the transmission structure of the present invention.
Fig. 2 is a schematic structural view of the first gear assembly of the present invention.
Fig. 3 is a schematic view of the construction of the worm frame according to the present invention.
Fig. 4 is a schematic view of the structure of the rocker arm of the present invention.
Fig. 5 is a schematic structural diagram of the engagement between the second gear assembly and the worm wheel assembly according to the present invention.
The system comprises a first motor, a second motor, a straight gear A, a first bevel gear A, a second bevel gear A, a worm frame A, a 6-worm A, a second motor, a straight gear B, a first bevel gear B, a second bevel gear B, a worm frame B, a worm gear B, a rocker arm, a worm wheel output shaft, a potentiometer, a rack 16, a pin 17 and a bearing 18.
Detailed Description
The invention is described in detail below by way of example with reference to the accompanying drawings.
The invention provides a transmission structure of a dual-redundancy electric mechanism, which comprises a first motor 1, a straight gear A2, a first bevel gear A3, a second bevel gear A4, a worm rack A5, a worm A6, a second motor 7, a straight gear B8, a first bevel gear B9, a second bevel gear B10, a worm rack B11, a worm B12, a rocker arm 13, a worm wheel output shaft 14, a potentiometer 15, a frame 16, a pin 17 and a bearing 18, as shown in figure 1.
The structure of the straight gear A2, the first bevel gear A3, the second bevel gear A4, the worm rack A5 and the worm A6 is shown in FIG. 2, and the straight gear A2 is connected with an extending shaft on the first bevel gear A3 through a pin, so that the first bevel gear A3 can be driven to rotate. The second bevel gear a4 is integral with the worm a6 and is mounted on the worm frame a5 by bearings, and the second bevel gear a4 and the worm a6 are rotatable about their own axes. The worm frame A5 is mounted on an extension shaft on the first bevel gear A3 and rotates about the extension shaft on the first bevel gear A3, which in turn rotates the second bevel gear A4 and worm A6 about the extension shaft on the first bevel gear A3. With this mounting arrangement, the second bevel gear A4 and the worm A6 can rotate both about their own axes and about the extension shaft on the first bevel gear A3.
The structure of the worm frame is shown in fig. 3. One end is provided with a rectangular groove used for being connected with the rocker arm. The other end is designed into a sleeve form and can be arranged on an extending shaft of the first bevel gear to rotate around the axis of the first bevel gear. In addition, a bearing seat and an extending shaft are arranged on the worm rack and used for mounting a second bevel gear and the worm.
The rocker arm is driven by external power and is structured as shown in fig. 4, the rollers on the rocker arm can rotate around the axis of the rocker arm, and the two rollers are respectively embedded in the rectangular grooves on the worm frame A and the worm frame B. The rocker arm rotates clockwise to drive the worm frame A to swing anticlockwise around the axis of the first bevel gear A, and simultaneously drive the worm frame B to swing anticlockwise around the axis of the first bevel gear B. Conversely, counterclockwise rotation of the rocker arm can drive the worm frame a to swing clockwise around the axis of the first bevel gear a, and simultaneously drive the worm frame B to swing clockwise around the axis of the first bevel gear B. Thus, the engagement and disengagement of the worm A and B with the worm wheel can be controlled by the rotation of the rocker arm.
In normal operation, the transmission structure is as shown in fig. 1, the first motor 1 is engaged with the spur gear a2 to drive the spur gear a2 to rotate, and further drive the first bevel gear A3 to rotate, the first bevel gear A3 is engaged with the second bevel gear a4 to drive the worm a6 integrated with the second bevel gear a4 to rotate. The worm a6 meshes with the worm gear output shaft, and rotates the worm gear output shaft 14. The potentiometer 15 is coaxially installed with the worm wheel output shaft 14 through the frame 16 and is used for feeding back the rotating angle of the worm wheel output shaft 14.
When the first motor 1 or the spur gear a2, the first bevel gear A3, the second bevel gear a4 and the worm rack a5 and the worm a6 have faults, the rocker arm 13 is driven by external power to rotate anticlockwise so that the worm a6 is disengaged from the worm wheel output shaft 14, the faults are isolated, meanwhile, the worm B12 is engaged with the worm wheel output shaft 14, and the second motor 7, the spur gear B8, the first bevel gear B9, the second bevel gear B10, the worm rack B11 and the worm B12 are in an operating state, as shown in fig. 5. At this time, the second motor 7 rotates the spur gear B8, and further rotates the first bevel gear B9, the first bevel gear B9 meshes with the second bevel gear B10, and further rotates the worm B12 integrated with the second bevel gear B10, and the worm B12 meshes with the worm wheel output shaft 14, and rotates the worm wheel output shaft 14.
Similarly, when the second motor 7 or the spur gear B8, the first bevel gear B9, the second bevel gear B10, the worm frame B11, and the worm B12 are failed, the rocker arm 13 is driven by external power to rotate clockwise to disengage the worm B12 from the worm gear output shaft 14, so as to isolate the failure, and simultaneously, the worm A6 is engaged with the worm gear output shaft 14, so that the first motor 1, the spur gear a2, the first bevel gear A3, the second bevel gear a4, the worm frame a5, and the worm A6 are in an operating state.
In summary, the above description is only a preferred embodiment of the present invention, and is not intended to limit the scope of the present invention. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.
Claims (3)
1. A transmission structure of a dual-redundancy electric mechanism is characterized by comprising a first motor, a first gear transmission assembly, a worm gear assembly, a rocker arm, a second motor and a second gear transmission assembly;
the first motor is in transmission connection with the first gear transmission assembly, the second motor is in transmission connection with the second gear transmission assembly, the rocker arm is respectively in movable connection with the first gear transmission assembly and the second gear transmission assembly, and the first gear transmission assembly and the second gear transmission assembly are respectively separated from and meshed with the worm gear assembly through swinging the rocker arm.
2. The transmission structure of a dual-redundancy electric mechanism according to claim 1, wherein the first gear transmission assembly and the second gear transmission assembly each comprise a straight gear, a first bevel gear, a second bevel gear, a worm rack and a worm;
one end of the worm rack is of a sleeve structure, an extending shaft is arranged at the sleeve end, the other end of the worm rack is a bearing seat end, and a rectangular groove is formed in the bearing seat end;
an extension shaft is arranged along the axis of the first bevel gear;
the straight gear is coaxially and fixedly connected with an extending shaft of the first bevel gear through a pin, the second bevel gear is coaxially and fixedly connected with one end of a worm, a sleeve end of the worm frame is sleeved on the extending shaft of the first bevel gear, the extending shaft of the sleeve end and the second bevel gear are coaxially and movably connected through a bearing, the other end of the worm is movably connected with a bearing seat end of the worm frame through a bearing, and the first bevel gear is meshed with the gear of the second bevel gear.
3. The transmission structure of a dual-redundancy electric mechanism of claim 2, wherein the rocker arm swings around the fixed shaft, and rollers are respectively arranged on two sides of the rocker arm, and the two rollers are equidistant from the fixed shaft; the two rollers are respectively embedded in the rectangular grooves of the worm rack.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911304583.6A CN111120581B (en) | 2019-12-17 | 2019-12-17 | Transmission structure of dual-redundancy electric mechanism |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911304583.6A CN111120581B (en) | 2019-12-17 | 2019-12-17 | Transmission structure of dual-redundancy electric mechanism |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN111120581A true CN111120581A (en) | 2020-05-08 |
| CN111120581B CN111120581B (en) | 2021-01-19 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201911304583.6A Active CN111120581B (en) | 2019-12-17 | 2019-12-17 | Transmission structure of dual-redundancy electric mechanism |
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| Country | Link |
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| CN (1) | CN111120581B (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115995914A (en) * | 2022-04-28 | 2023-04-21 | 襄阳航力机电技术发展有限公司 | Aviation double-margin electric mechanism |
Citations (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH09250614A (en) * | 1996-03-15 | 1997-09-22 | M & C Kk | Transmission for conveyance |
| US6845854B2 (en) * | 2000-04-07 | 2005-01-25 | Gkn Viscodrive Gmbh | Axial setting device |
| WO2008123813A1 (en) * | 2007-03-18 | 2008-10-16 | Stridsberg Innovation Ab | Releasable coupling for jamming handling |
| CN102128235A (en) * | 2011-03-16 | 2011-07-20 | 郑州机械研究所 | Dual-redundance precision gear transmission device |
| CN204527620U (en) * | 2015-02-05 | 2015-08-05 | 南京航空航天大学 | Worm-gear type Electric Brake System of Aircraft system |
| CN106321770A (en) * | 2016-08-26 | 2017-01-11 | 西北工业大学 | Dual-redundancy electric steering engine |
| CN107725705A (en) * | 2017-09-30 | 2018-02-23 | 北京精密机电控制设备研究所 | A kind of double remaining electromechanical actuators of linear antiseize |
| CN108238022A (en) * | 2018-02-27 | 2018-07-03 | 湖北文理学院 | A kind of double remaining braking system executive devices of pilotless automobile and brake system of car |
| CN207603379U (en) * | 2017-09-30 | 2018-07-10 | 安徽四创电子股份有限公司 | A kind of high rotating speed radar antenna transmission system of double generator redundancy |
| CN109835489A (en) * | 2019-02-21 | 2019-06-04 | 重庆大学 | A kind of cold standby oiling switch on/off electric transmission mechanism for aviation |
| CN110469644A (en) * | 2019-07-22 | 2019-11-19 | 北京中航智科技有限公司 | A kind of Worm-gear type double redundancy transmission device |
-
2019
- 2019-12-17 CN CN201911304583.6A patent/CN111120581B/en active Active
Patent Citations (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH09250614A (en) * | 1996-03-15 | 1997-09-22 | M & C Kk | Transmission for conveyance |
| US6845854B2 (en) * | 2000-04-07 | 2005-01-25 | Gkn Viscodrive Gmbh | Axial setting device |
| WO2008123813A1 (en) * | 2007-03-18 | 2008-10-16 | Stridsberg Innovation Ab | Releasable coupling for jamming handling |
| CN102128235A (en) * | 2011-03-16 | 2011-07-20 | 郑州机械研究所 | Dual-redundance precision gear transmission device |
| CN204527620U (en) * | 2015-02-05 | 2015-08-05 | 南京航空航天大学 | Worm-gear type Electric Brake System of Aircraft system |
| CN106321770A (en) * | 2016-08-26 | 2017-01-11 | 西北工业大学 | Dual-redundancy electric steering engine |
| CN107725705A (en) * | 2017-09-30 | 2018-02-23 | 北京精密机电控制设备研究所 | A kind of double remaining electromechanical actuators of linear antiseize |
| CN207603379U (en) * | 2017-09-30 | 2018-07-10 | 安徽四创电子股份有限公司 | A kind of high rotating speed radar antenna transmission system of double generator redundancy |
| CN108238022A (en) * | 2018-02-27 | 2018-07-03 | 湖北文理学院 | A kind of double remaining braking system executive devices of pilotless automobile and brake system of car |
| CN109835489A (en) * | 2019-02-21 | 2019-06-04 | 重庆大学 | A kind of cold standby oiling switch on/off electric transmission mechanism for aviation |
| CN110469644A (en) * | 2019-07-22 | 2019-11-19 | 北京中航智科技有限公司 | A kind of Worm-gear type double redundancy transmission device |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115995914A (en) * | 2022-04-28 | 2023-04-21 | 襄阳航力机电技术发展有限公司 | Aviation double-margin electric mechanism |
| CN115995914B (en) * | 2022-04-28 | 2024-02-20 | 襄阳航力机电技术发展有限公司 | Aviation double-margin electric mechanism |
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| Publication number | Publication date |
|---|---|
| CN111120581B (en) | 2021-01-19 |
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