CN110848354B - Transmission method for spaceflight based on adsorption transmission - Google Patents
Transmission method for spaceflight based on adsorption transmission Download PDFInfo
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- CN110848354B CN110848354B CN201910940043.0A CN201910940043A CN110848354B CN 110848354 B CN110848354 B CN 110848354B CN 201910940043 A CN201910940043 A CN 201910940043A CN 110848354 B CN110848354 B CN 110848354B
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- 230000005540 biological transmission Effects 0.000 title claims abstract description 70
- 238000000034 method Methods 0.000 title claims abstract description 21
- 238000001179 sorption measurement Methods 0.000 title claims abstract description 19
- 230000007246 mechanism Effects 0.000 claims abstract description 28
- 230000003044 adaptive effect Effects 0.000 claims abstract description 11
- 230000008878 coupling Effects 0.000 claims abstract description 9
- 238000010168 coupling process Methods 0.000 claims abstract description 9
- 238000005859 coupling reaction Methods 0.000 claims abstract description 9
- 230000033001 locomotion Effects 0.000 claims abstract description 9
- 230000009351 contact transmission Effects 0.000 claims abstract description 4
- QJVKUMXDEUEQLH-UHFFFAOYSA-N [B].[Fe].[Nd] Chemical compound [B].[Fe].[Nd] QJVKUMXDEUEQLH-UHFFFAOYSA-N 0.000 claims description 4
- 239000000463 material Substances 0.000 claims description 4
- 229910001172 neodymium magnet Inorganic materials 0.000 claims description 4
- 230000009471 action Effects 0.000 claims description 3
- 238000010586 diagram Methods 0.000 description 3
- 238000005461 lubrication Methods 0.000 description 2
- 238000012545 processing Methods 0.000 description 2
- 230000001133 acceleration Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 239000003638 chemical reducing agent Substances 0.000 description 1
- 239000008358 core component Substances 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
- 239000013585 weight reducing agent Substances 0.000 description 1
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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
- F16H25/00—Gearings comprising primarily only cams, cam-followers and screw-and-nut mechanisms
- F16H25/18—Gearings comprising primarily only cams, cam-followers and screw-and-nut mechanisms for conveying or interconverting oscillating or reciprocating motions
- F16H25/20—Screw mechanisms
- F16H25/22—Screw mechanisms with balls, rollers, or similar members between the co-operating parts; Elements essential to the use of such members
- F16H25/2204—Screw mechanisms with balls, rollers, or similar members between the co-operating parts; Elements essential to the use of such members with balls
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02K—DYNAMO-ELECTRIC MACHINES
- H02K49/00—Dynamo-electric clutches; Dynamo-electric brakes
- H02K49/10—Dynamo-electric clutches; Dynamo-electric brakes of the permanent-magnet type
- H02K49/102—Magnetic gearings, i.e. assembly of gears, linear or rotary, by which motion is magnetically transferred without physical contact
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- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
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- Transmission Devices (AREA)
- Retarders (AREA)
Abstract
The invention relates to a transmission method for spaceflight based on adsorption transmission, which comprises the following steps: s1, selecting an adaptive planetary gear set, adhering adaptive permanent magnets to the planetary gear set, and fixing a planetary gear through a planet carrier; s2, selecting any two of a sun gear, a planet carrier and an inner gear ring in the planetary gear set as input ends, selecting the other one as an output end, connecting the input ends with a driving system, and connecting the output ends with the input end of a ball screw; s3, non-contact transmission is realized through magnetic coupling of an N pole and an S pole between different interacting magnetic gears; and S4, the ball screw is driven by the output end to reach different transmission ratios, the torque of the output end is converted into linear motion and transmitted to the working mechanism, and the connection of the power system and the working mechanism is completed. The transmission mechanism provided by the invention transmits torque through magnetic pulling force of multi-magnetic field coupling, and realizes the size miniaturization and the weight lightening of the transmission mechanism.
Description
Technical Field
The invention belongs to the technical field of transmission mechanisms, and particularly relates to a transmission method for spaceflight based on adsorption transmission.
Background
The transmission mechanism is used as a link for connecting a power system and a working mechanism and is widely applied to various types of aerospace vehicles. As a basic core component of major aerospace equipment, the performance of aerospace transmission mechanisms in China still has a large gap compared with foreign products, and a technical bottleneck for restricting development still exists.
According to different types of transmission mechanisms, the current aerospace precise transmission mechanism comprises a lead screw transmission mechanism, a gear transmission mechanism and the like, the mechanical gear transmission mechanism is widely applied to various social fields by the advantages of stable transmission ratio, large transmittable torque and the like, the vibration and noise in the transmission of mechanical straight teeth and helical bevel gears are large due to processing and installation errors, and the spiral bevel gears have high transmission precision but high processing cost and high price. And the mechanical bevel gear transfers torque by means of the engagement between teeth, which brings about irreparable problems to gear transmission, such as mechanical fatigue, friction loss, lubrication pollution, large vibration and noise, and the like.
Disclosure of Invention
The present invention is directed to solve the problems of the background art, and an object of the present invention is to provide a transmission method for aerospace based on adsorption transmission, which performs torque transmission by magnetic pulling force of multi-magnetic field coupling, and realizes volume miniaturization and weight reduction of a transmission mechanism.
The purpose of the invention is realized as follows:
a transmission method for spaceflight based on adsorption transmission comprises the following steps:
s1, selecting an adaptive planetary gear set, adhering adaptive permanent magnets to the outer surfaces of a sun gear and a planet gear of the planetary gear set, adhering adaptive permanent magnets to the inner surface of an inner gear ring, fixing the planet gear through a planet carrier, and coaxially installing the sun gear, the inner gear ring and the planet carrier;
s2, selecting any two of a sun gear, a planet carrier and an inner gear ring in the planetary gear set as input ends, selecting the other one as an output end, connecting the input ends with a driving system, connecting the output ends with the input end of a ball screw, and connecting the output end of the ball screw with a working mechanism through a nut;
s3, the rotating speed of the gears at the input end is increased under the driving system, the corresponding magnetic field deviates from the balance position, the output end is accelerated under the modulation action of the magnetic field until the three are in the magnetic balance position again, and the gears at the input end and the output end both keep a stable rotating speed movement to achieve stable output of torque;
and S4, the ball screw is driven by the output end to reach different transmission ratios, the torque of the output end is converted into linear motion and transmitted to the working mechanism, and the connection of the power system and the working mechanism is completed.
Furthermore, the planetary gear set and the ball screw are arranged in the coaxial direction.
Further, in S1, the sun gear and the planet gear are in an external meshing structure, and the external meshing gear of the sun gear and the planet gear has an opposite rotation direction.
Further, in S1, the planet gear and the ring gear are in a ring gear structure, and the ring gear rotation directions of the planet gear and the ring gear are the same.
Furthermore, in S1, the magnetic pole pair of the permanent magnet is formed by arranging N-level magnetic sheets and S-level magnetic sheets at uniform intervals, the permanent magnet is made of neodymium iron boron permanent magnet materials, and the permanent magnet is magnetized in the radial direction.
Further, in S3, non-contact transmission is realized between different interacting magnetic gears through magnetic coupling of the N pole and the S pole.
Furthermore, the nut is a combined double nut without an axial gap and composed of two nuts.
The utility model provides a drive mechanism for adsorbing transmission, includes planetary gear set and ball is vice, planetary gear set is connected to the ball is vice, planetary gear set and ball are vice to be the linear arrangement, planetary gear set includes sun gear, planet wheel, ring gear and permanent magnet, sun gear and ring gear coaxial line set up, the permanent magnet includes first permanent magnet, second permanent magnet and third permanent magnet, first permanent magnet is established to the surface of sun gear, the second permanent magnet is established to the surface of planet wheel, the third permanent magnet is established to the internal surface of ring gear, the permanent magnet includes at least one magnetic pole pair.
Furthermore, the ball screw pair comprises a roller screw, a nut and a flat key, one end of the roller screw is connected with the planetary gear set, the nut is sleeved on the ball screw, and the flat key is arranged on the nut.
Furthermore, the sun wheel and the planet wheel are of an external meshing structure, the rotating directions of the external meshing gears of the sun wheel and the planet wheel are opposite, the planet wheel and the inner gear ring are of an internal meshing gear structure, and the internal meshing rotating directions of the planet wheel and the inner gear ring are the same.
Further, the magnetic pole pair number P of the sun wheel1Planet wheel magnetic pole pair number P2And the number of pole pairs P of the inner gear ring3Satisfies the following conditions: p1+2P2＝P3。
Further, the sun wheel angular velocity ω1Angular velocity omega of planet carrier4And annular gear angular velocity ω3Satisfies the following conditions:
further, the angular velocity ω of the ball screwGSatisfies the following conditions:
wherein d is1Diameter of the screw, d2Is the nut diameter.
Furthermore, when the sun gear and the inner gear ring are used as input ends and the planet carrier is used as an output end, the input power F of the sun gear1Input power F of inner gear ring2And output power F of the carrier3Satisfies the following conditions: f3＝F1+F2。
Further, the output torque T of the carrier3Satisfies the following conditions:
furthermore, when the sun gear and the planet carrier are used as input ends and the inner gear ring is used as an output end, the input power F of the sun gear1Input power F of planet carrier3And the output power F of the ring gear2Satisfies the following conditions: f2＝F1+F3。
Further, the output torque T of the inner gear ring2Satisfies the following conditions:
furthermore, when the inner gear ring and the planet carrier are used as input ends and the sun gear is used as an output end, the input power F of the inner gear ring2Input power F of planet carrier3And the output power F of the sun gear1Satisfies the following conditions: f1＝F2+F3。
Further, the output torque T of the inner gear ring2Satisfies the following conditions:
compared with the prior art, the invention has the beneficial effects that:
1. the invention provides a transmission method for spaceflight based on adsorption transmission, which realizes the motion and energy transmission between an input gear and an output gear by utilizing the magnetic field coupling between permanent magnets, is clean and environment-friendly because of no contact and no friction and lubrication, and adopts the combination of two modes of external engagement with large transmission moment fluctuation and low torque density and internal engagement with small moment fluctuation and large transmission moment to carry out the moment transmission by the magnetic pull force generated by the magnetic coupling of a planet wheel, a permanent magnet sun wheel and a permanent magnet gear ring.
2. According to the transmission method for spaceflight based on adsorption transmission, the planetary gear set and the ball screw pair are combined, the planetary gear set is driven by the motor and is equivalent to the reducer of the ball screw pair, so that the screw can run more stably, different transmission ratios of the ball screw pair are realized, the ball screw has strong bearing capacity and service life, higher rotating speed and angular acceleration are realized, the transmission method is applicable to various conditions, and the size miniaturization and the weight lightening of a transmission mechanism are realized.
3. According to the transmission method for spaceflight based on adsorption transmission, provided by the invention, the magnetic pole pair, the angular speed and the output torque relation of the planetary gear set are set, so that the effectiveness of magnetic coupling of all parts in the gear set is ensured, all permanent magnets participate in torque transmission at the same time, and the torque density is effectively improved.
Drawings
FIG. 1 is a flow chart of the driving method for spaceflight based on adsorption driving of the invention.
Fig. 2 is a schematic diagram of a transmission mechanism of the transmission method for spaceflight based on adsorption transmission.
FIG. 3 is a schematic diagram of a transmission planetary gear set of the transmission method for aerospace based on adsorption transmission of the invention.
Fig. 4 is a schematic diagram of a ball screw pair of a transmission mechanism of the transmission method for spaceflight based on adsorption transmission.
In the figure: 1. a planetary gear set; 11. a sun gear; 111. a first permanent magnet; 12. a planet wheel; 121. a second permanent magnet; 13. an inner gear ring; 131. a third permanent magnet; 2. a ball screw pair; 21. a roller screw; 22. a flat bond; 23. and a nut.
Detailed Description
The technical solutions in the embodiments of the present invention are clearly and completely described below with reference to the accompanying drawings, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, rather than all embodiments, and all other embodiments obtained by those skilled in the art without any creative work based on the embodiments of the present invention belong to the protection scope of the present invention.
Example 1
As shown in fig. 1, a transmission method for aerospace based on adsorption transmission includes the following steps:
s1, selecting an adaptive planetary gear set, pasting adaptive permanent magnets on the outer surfaces of a sun gear and a planet gear of the planetary gear set, pasting adaptive permanent magnets on the inner surface of an inner gear ring, wherein the magnetic pole pairs of the permanent magnets are formed by N-level magnetic sheets and S-level magnetic sheets which are uniformly arranged at intervals, the permanent magnets are made of neodymium iron boron permanent magnet materials, the permanent magnets are magnetized in the radial direction, the planet gear is fixed through a planet carrier, the sun gear, an inner gear ring and the planet carrier are coaxially installed, the sun gear and the planet gear are in an outer meshing structure, the rotation directions of the outer meshing gears of the sun gear and the planet gear are opposite, the planet gear and the inner gear ring are in an inner meshing gear structure, and the inner meshing rotation directions of the planet gear and the inner gear ring are the same.
S2, any two of the sun gear, the planet carrier and the inner gear ring in the planetary gear set are selected as input ends, the other one is selected as an output end, the input ends are connected with the driving system, the output ends are connected with the input end of the ball screw, the output end of the ball screw is connected with the working mechanism through a nut, and the planetary gear set and the ball screw are arranged in the coaxial direction.
S3, the rotation speed of the gears at the input end is increased under the driving system, the corresponding magnetic field deviates from the balance position, the output end is accelerated under the modulation action of the magnetic field until the three are in the magnetic force balance position again, the gears at the input end and the output end both keep a stable rotation speed movement to achieve the stable output of torque, and the non-contact transmission is realized between different interacting magnetic gears through the magnetic coupling of the N pole and the S pole.
And S4, the ball screw is driven by the output end to reach different transmission ratios, the torque of the output end is converted into linear motion and transmitted to the working mechanism, and the connection of the power system and the working mechanism is completed.
Example 2
As shown in fig. 2 to 4, a transmission mechanism used in the aerospace transmission method based on adsorption transmission includes a planetary gear set and a ball screw pair, the ball screw pair is connected with the planetary gear set, the planetary gear set and the ball screw pair are linearly arranged, the planetary gear set includes a sun gear, a planet gear, an inner gear ring and a permanent magnet, the sun gear and the planet gear are in an external engagement structure, the rotation directions of the external engagement gears of the sun gear and the planet gear are opposite, the planet gear and the inner gear ring are in an internal engagement gear structure, the internal engagement rotation directions of the planet gear and the inner gear ring are the same, and the sun gear and the inner gear ring are coaxially arranged.
The permanent magnet includes radial first permanent magnet, second permanent magnet and the third permanent magnet that magnetizes, first permanent magnet is established to the surface of sun gear, the second permanent magnet is established to the surface of planet wheel, the third permanent magnet is established to the internal surface of ring gear, the permanent magnet includes that at least one magnetic pole is right, the magnetic pole of permanent magnet is to being formed by N level magnetic sheet and the even interval setting of S level magnetic sheet, the permanent magnet adopts neodymium iron boron permanent magnet material.
Example 3
Magnetic pole pair P of sun wheel1Planet wheel magnetic pole pair number P2And the number of pole pairs P of the inner gear ring3Satisfies the following conditions: p1+2P2＝P3。
Angular velocity omega of sun wheel1Angular velocity omega of planet carrier4And annular gear angular velocity ω3Satisfies the following conditions:
when the sun gear and the inner gear ring are used as input ends and the planet carrier is used as an output end, the input power F of the sun gear1Input power F of inner gear ring2And output power F of the carrier3Satisfies the following conditions: f3＝F1+F2。
Further, the output torque T of the carrier3Satisfies the following conditions:
example 4
Magnetic pole pair P of sun wheel1Planet wheel magnetic pole pair number P2And the number of pole pairs P of the inner gear ring3Satisfies the following conditions: p1+2P2＝P3。
Angular velocity omega of sun wheel1Angular velocity omega of planet carrier4And annular gear angular velocity ω3Satisfies the following conditions:
when the sun gear and the planet carrier are used as input ends and the inner gear ring is used as an output end, the input power F of the sun gear1Input power F of planet carrier3And the output power F of the ring gear2Satisfies the following conditions: f2＝F1+F3。
Output torque T of inner gear ring2Satisfies the following conditions:
example 6
Magnetic pole pair P of sun wheel1Planet wheel magnetic pole pair number P2And the number of pole pairs P of the inner gear ring3Satisfies the following conditions: p1+2P2＝P3。
Angular velocity omega of sun wheel1Angular velocity omega of planet carrier4And annular gear angular velocity ω3Satisfies the following conditions:
the inner gear ring and the planet carrier are used as input ends, and when the sun gear is used as an output end, the input power F of the inner gear ring2Input power F of planet carrier3And the output power F of the sun gear1Satisfies the following conditions: f1＝F2+F3。
Output torque T of inner gear ring2Satisfies the following conditions:
the above description is only a preferred embodiment of the present invention, and should not be taken as limiting the invention, and any modifications, equivalents and substitutions made within the scope of the present invention should be included.
Claims (4)
1. A transmission method for spaceflight based on adsorption transmission is characterized in that: the method comprises the following steps:
s1, selecting an adaptive planetary gear set, pasting adaptive permanent magnets on the outer surfaces of a sun gear and a planet gear of the planetary gear set, pasting adaptive permanent magnets on the inner surface of an inner gear ring, fixing the planet gear through a planet carrier, coaxially installing the sun gear, the inner gear ring and the planet carrier, and counting P the magnetic pole pair of the sun gear1Planet wheel magnetic pole pair number P2And internal teethNumber of pairs of coil poles P3Satisfies the following conditions: p1+2P2＝P3；
S2, selecting any two of a sun gear, a planet carrier and an inner gear ring in the planetary gear set as input ends, selecting the other one as an output end, connecting the input ends with a driving system, connecting the output ends with the input end of a ball screw, and connecting the output end of the ball screw with a working mechanism through a nut;
s3, the rotation speed of the gear at the input end is increased under the driving system, the corresponding magnetic field deviates from the balance position, the output end is accelerated under the modulation action of the magnetic field until the three are in the magnetic balance position again, the gears at the input end and the output end are kept in stable rotation speed motion, the stable output of torque is achieved, and the angular speed omega of the sun gear is equal to the angular speed omega1Angular velocity ω of the carrier4And angular velocity ω of the ring gear3Satisfies the following conditions: omega4＝ω1P1/(P1+P3)+ω3P3/(P1+P3)；
S4, the ball screw reaches different transmission ratios under the drive of the output end, converts the torque of the output end into linear motion, transmits the linear motion to the working mechanism, completes the connection of the power system and the working mechanism, and the angular speed omega of the ball screw isGSatisfies the following conditions: omegaG＝ω1d1P1/(d1P1+d2P3)+ω4d2P3/(d1P2+d2P3) Wherein d is1Is the screw diameter of the ball screw, d2Is the diameter of the nut;
when the sun gear and the inner gear ring are used as input ends and the planet carrier is used as an output end, the input power F1 of the sun gear and the input power F of the inner gear ring2And output power F of the carrier3Satisfies the following conditions: f3＝F1+F2(ii) a Output torque T of planetary carrier3Satisfies the following conditions:
T3＝F3 2/(F1ω1+F2ω3)；
the sun gear and the planet carrier are used as input ends, and the inner gear ring is used as a transmission endInput power F of sun gear at output1Input power F of planet carrier3And the output power F of the ring gear2Satisfies the following conditions: f2＝F1+F3；
Output torque T of inner gear ring2Satisfies the following conditions:
T2＝F2 2/(F2ω4-F1ω1)；
in S1, the planet wheel and the inner gear ring are of an inner gear structure, and the inner gear rotating directions of the planet wheel and the inner gear ring are the same; the magnetic pole pair of the permanent magnet is formed by arranging N-grade magnetic sheets and S-grade magnetic sheets at uniform intervals, the permanent magnet is made of neodymium iron boron permanent magnet materials, and the permanent magnet is magnetized in the radial direction.
2. The transmission method for spaceflight based on adsorption transmission as claimed in claim 1, wherein: the planetary gear set and the ball screw are arranged in the coaxial direction.
3. The transmission method for spaceflight based on adsorption transmission as claimed in claim 2, wherein: in S1, the sun wheel and the planet wheel are in an external meshing structure, and the external meshing gear rotating directions of the sun wheel and the planet wheel are opposite.
4. The transmission method for spaceflight based on adsorption transmission as claimed in claim 1, wherein: in S3, non-contact transmission is realized between different interacting magnetic gears through magnetic coupling of the N pole and the S pole.
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| CN101968114A (en) * | 2010-09-29 | 2011-02-09 | 江苏泰隆减速机股份有限公司 | Magnetic suspension planetary gear variable-speed motor |
| CN103023206A (en) * | 2012-12-24 | 2013-04-03 | 江苏大学 | Five-phase fault-tolerant permanent magnet planetary gear motor for hybrid electric vehicle and operation method of five-phase fault-tolerant permanent magnet planetary gear motor |
| CN103586321B (en) * | 2013-10-16 | 2015-05-13 | 西安交通大学 | Supercharged electric servo deep-drawing cushion |
| CN203674952U (en) * | 2013-12-18 | 2014-06-25 | 江苏大学 | Magnetic field enhanced high-torque density magneto-type planetary gear |
| CN103715860B (en) * | 2013-12-18 | 2016-03-02 | 江苏大学 | A kind of magnetic-field-enhanced high torque density magneto planetary gear |
| CN104393727B (en) * | 2014-12-10 | 2017-04-12 | 哈尔滨工业大学 | Radial magnetic field type electromagnetic planetary gear transmission |
| JP6604820B2 (en) * | 2015-08-07 | 2019-11-13 | 日本電産サンキョー株式会社 | Planetary gear reducer and drive mechanism |
| CN106887941A (en) * | 2015-12-16 | 2017-06-23 | 邱维康 | Planet magnetomotive push-pull drive device |
| CN205639532U (en) * | 2016-05-17 | 2016-10-12 | 中国石油大学(华东) | Variable permanent magnetism epicyclic train of drive ratio |
| CN205911936U (en) * | 2016-08-05 | 2017-01-25 | 杨勇 | Permanent magnetism planetary reducer |
| CN206582290U (en) * | 2017-02-09 | 2017-10-24 | 华英新能源汽车（苏州）有限公司 | The high torque (HT) wide range speed control electric drive system integrated with planetary gear |
| CN107489713B (en) * | 2017-08-22 | 2019-05-10 | 濮阳职业技术学院 | A kind of electro-mechanical brake apparatus |
| CN110266176B (en) * | 2019-04-30 | 2024-05-28 | 苏州博安捷机器人科技有限公司 | Magnetic transmission two-stage transmission |
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