CN110131406A - A kind of speed changer executive device - Google Patents
A kind of speed changer executive device Download PDFInfo
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- CN110131406A CN110131406A CN201910329853.2A CN201910329853A CN110131406A CN 110131406 A CN110131406 A CN 110131406A CN 201910329853 A CN201910329853 A CN 201910329853A CN 110131406 A CN110131406 A CN 110131406A
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- Prior art keywords
- magnetorheological
- speed changer
- gearshift
- coil
- gear
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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
- F16D—COUPLINGS FOR TRANSMITTING ROTATION; CLUTCHES; BRAKES
- F16D37/00—Clutches in which the drive is transmitted through a medium consisting of small particles, e.g. centrifugally speed-responsive
- F16D37/008—Clutches in which the drive is transmitted through a medium consisting of small particles, e.g. centrifugally speed-responsive the particles being carried by a fluid, to vary viscosity when subjected to electric change, i.e. electro-rheological or smart fluids
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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
- F16H61/00—Control functions within control units of change-speed- or reversing-gearings for conveying rotary motion ; Control of exclusively fluid gearing, friction gearing, gearings with endless flexible members or other particular types of gearing
- F16H61/26—Generation or transmission of movements for final actuating mechanisms
- F16H61/28—Generation or transmission of movements for final actuating mechanisms with at least one movement of the final actuating mechanism being caused by a non-mechanical force, e.g. power-assisted
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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
- F16H61/00—Control functions within control units of change-speed- or reversing-gearings for conveying rotary motion ; Control of exclusively fluid gearing, friction gearing, gearings with endless flexible members or other particular types of gearing
- F16H61/26—Generation or transmission of movements for final actuating mechanisms
- F16H61/28—Generation or transmission of movements for final actuating mechanisms with at least one movement of the final actuating mechanism being caused by a non-mechanical force, e.g. power-assisted
- F16H2061/2853—Electromagnetic solenoids
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- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Structure Of Transmissions (AREA)
Abstract
The present invention relates to a kind of speed changer executive devices, belong to automobile gearbox clutch technical field, solve the problems, such as that existing speed changer executive component realizes that speed change overall volume is excessive, abrasion is obvious by gear set.The present invention includes: the first magnetorheological gearshift, the second magnetorheological gearshift, first coil, the second coil and gear ring；The input terminal of first magnetorheological gearshift is fixedly connected with the shell of speed changer, and output end is fixedly connected with gear ring；The input terminal of second magnetic fluid transformation blocking means is fixedly connected with the input shaft of speed changer, and output end is fixedly connected with gear ring；Gear ring, speed changer input shaft pass through the output axis connection of driving gear set and speed changer；Magnetorheological fluid is filled between first magnetorheological gearshift and the input terminal and output end of the second magnetorheological gearshift；Coil is used to generate the magnetic field of control magnetorheological fluid.Speed changer executive device speed change fast response time of the invention, eliminates hydraulic clutch control section in the prior art.
Description
Technical field
The present invention relates to automobile gearbox clutch technical field more particularly to a kind of speed changer executive devices.
Background technique
Ideal pure electric automobile multi-speed gear box needs to have that small in size, structure is simple, light weight, transmission efficiency are high
Feature.It is general higher several with degree currently on the market in the case where considering structural volume, cost, efficiency and reliability at the same time
In kind gearbox, only MT, AMT and DCT more meet the requirements in terms of these.Two grades of pure electric automobile is automatic for conclusion
The organization plan of speed changer mainly has AMT type and DCT type, gear drive is still utilized on structural nature, therefore have higher
Efficiency, but requirement of the pure electric automobile to speed changer is that compact-sized, high-efficient, gear shift is smooth, in the design of both structures
The part of essence is still two shaft type MT, so that not compact enough in structure.For AMT type due to the limitation of mechanical structure, gear adds synchronization
The gearbox of device structure the shortcomings that there are gearshift procedure interruptions, but researching and designing of DCT itself is i.e. there is certain limitation,
And pure electric automobile itself has smooth accelerating ability and good ride comfort in the process of moving, according to current related pure electricity
From the point of view of the research application of electrical automobile two speed transmission, need to carry out in the structure basis of existing mechanical gearbox innovative
Breakthrough design, just it can be made more to agree with the performance requirement of pure electric automobile itself.
Summary of the invention
In view of above-mentioned analysis, the present invention is intended to provide a kind of speed changer executive device, holds to solve existing speed changer
Units realize the problem that speed change overall volume is excessive, abrasion is obvious by gear set.
The purpose of the present invention is mainly achieved through the following technical solutions:
In technical solution of the present invention, a kind of speed changer executive device, speed changer executive device includes: the first magnetorheological shift
Device, the second magnetorheological gearshift, first coil, the second coil and gear ring；
The input terminal of first magnetorheological gearshift is fixedly connected with the shell of speed changer, output end and the fixed company of gear ring
It connects；The input terminal of second magnetic fluid transformation blocking means is fixedly connected with the input shaft of speed changer, and output end is fixedly connected with gear ring；
Gear ring, speed changer input shaft pass through the output axis connection of driving gear set and speed changer；
Magnetic is filled between first magnetorheological gearshift and the input terminal and output end of the second magnetorheological gearshift
Rheology liquid；First coil is used to generate the magnetic field of the magnetorheological fluid in the first magnetorheological gearshift of control, and the second coil is used to
Generate the magnetic field of the magnetorheological fluid in the second magnetorheological gearshift of control.
In technical solution of the present invention, the input terminal of the first magnetorheological gearshift is the annulus being connected with gearbox case,
And the ipsilateral first concentric tube piece different equipped with multiple radiuses of annulus.
In technical solution of the present invention, the input terminal of the second magnetorheological gearshift is the circle being connected with transmission input shaft
Ring, and the ipsilateral second concentric tube piece different equipped with multiple radiuses of annulus.
In technical solution of the present invention, gear ring is annulus；The ipsilateral third different equipped with multiple radiuses of the outer ring of annulus
Concentric tube piece, and be inserted into the gap between the first concentric tube piece, form the first clutch structure；The inner ring of annulus it is ipsilateral on set
There is the 4th concentric tube piece that multiple radiuses are different, and be inserted into the gap between the second concentric tube piece, forms the second clutch structure.
In technical solution of the present invention, magnetorheological fluid is filled in the first clutch structure and the second clutch structure.
In technical solution of the present invention, first coil is located at the side of the axis direction of the first clutch structure, and first coil
Projection with the first clutch structure axis direction is at least partly overlapped.
In technical solution of the present invention, the second coil is located at the side of the axis direction of the second clutch structure, and the second coil
Projection with the second clutch structure axis direction is at least partly overlapped.
In technical solution of the present invention, gear ring is equipped with internal tooth or external tooth, and passes through the output axis connection of gear set and gearbox.
In technical solution of the present invention, gear set is planetary gear set.
In technical solution of the present invention, gear ring is equipped with internal tooth；Planetary gear set includes sun gear and planetary gear；Planetary gear setting
Between sun gear and gear ring, sun gear is fixed with transmission input shaft, and the wheel shaft of planetary gear passes through planet carrier and speed changer
Export axis connection.
Technical solution of the present invention at least can be realized one of following effect:
1, the present invention by coil control magnetorheological fluid viscosity, the transmission clutch of Lai Shixian gearshift, not only in response to
Speed is fast, and eliminates hydraulic clutch control section in the prior art, can be by the volume-diminished of entire speed changer at least
Percentage 50%.
2, there are gaps always between the output end and input terminal of gearshift of the invention, and fill magnetorheological fluid, lead to
It crosses high viscosity of the magnetorheological fluid in magnetic field and opens realization transmission process, without passing through engagement or friction as existing gearshift
It is driven to realize, the abrasion of gearshift output end and input terminal can be relieved, extend the service life of speed changer.
3, there are gaps always between gearshift output end and input terminal of the invention, and fill magnetorheological fluid, make
With in the process, only there is apparent loss to magnetorheological fluid, magnetorheological fluid is low-viscosity fluid under no magnetic field environment, can be with
It is simple and convenient directly by the export replacement of the structures such as conduit.
It in the present invention, can also be combined with each other between above-mentioned each technical solution, to realize more preferred assembled schemes.This
Other feature and advantage of invention will illustrate in the following description, also, certain advantages can become from specification it is aobvious and
It is clear to, or understand through the implementation of the invention.The objectives and other advantages of the invention can by specification, claims with
And it is achieved and obtained in specifically noted content in attached drawing.
Detailed description of the invention
Attached drawing is only used for showing the purpose of specific embodiment, and is not to be construed as limiting the invention, in entire attached drawing
In, identical reference symbol indicates identical component.
Fig. 1 is the schematic illustration that magnetorheological fluid of the invention controls speed change；
Fig. 2 is the schematic illustration of drive mechanism of the invention；
Fig. 3 is finished product structure figure of the present invention；
Appended drawing reference:
The magnetorheological gearshift of 1- first；The magnetorheological gearshift of 2- second；3- first coil；The second coil of 4-；5- tooth
Circle；6- magnetorheological fluid；7- shell；8- input shaft；9- output shaft；10- sun gear；11- planetary gear；12- planet carrier.
Specific embodiment
Specifically describing the preferred embodiment of the present invention with reference to the accompanying drawing, wherein attached drawing constitutes the application a part, and
Together with embodiments of the present invention for illustrating the principle of the present invention, it is not intended to limit the scope of the present invention.
As shown in Figure 1 and Figure 2, the embodiment of the invention provides a kind of speed changer executive devices, comprising: the transformation of the first magnetic current
Blocking means 1, the second magnetorheological gearshift 2, first coil 3, the second coil 4 and gear ring 5；First magnetorheological gearshift 1
Input terminal is fixedly connected with the shell of speed changer, and output end is fixedly connected with gear ring 5；The input of second magnetic fluid transformation blocking means
End is fixedly connected with the input shaft 8 of speed changer, and output end is fixedly connected with gear ring 5；Gear ring 5, speed changer input shaft 8 pass through biography
The connection of the output shaft 9 of moving gear group and speed changer；The input of first magnetorheological gearshift 1 and the second magnetorheological gearshift 2
Magnetorheological fluid 6 is filled between end and output end；First coil 3 is used to generate in the first magnetorheological gearshift 1 of control
The magnetic field of magnetorheological fluid 6, the second coil 4 are used to generate the magnetic field of the magnetorheological fluid 6 in the second magnetorheological gearshift 2 of control.
As shown in Figure 1, the embodiment of the present invention is a kind of two speed transmission executive component MPT, can be turned according to different target
Square demand is sized to match the transmission ratio of suitable driving motor torque power and needs, reduces the size in axial direction
And take full advantage of radial space i.e. radial dimension and transmit the principle that is proportional to of torque eliminate original clutch and
Brake structural eliminates hydraulic structure to reduce the volume of entire transmission system, so that occupied space is smaller, gives battery
Leave bigger design space.In the embodiment of the present invention, gear set do not limit with a certain type gear group, as long as can be realized two
Shelves speed change uses the simpler reliable planetary gear set of structure for convenience of explanation in the embodiment of the present invention.
For preparing for magnetorheological fluid 6, wherein most important three parts are magnetic-particle, carrier fluid and addition respectively
Agent.The most common soft magnetic particles for being used to prepare MRF before being such as cobalt powder, carbonyl iron dust, ferrocobalt and nickel zinc alloy.And
Existing new technology can prepare composite soft magnetic particle by means of different.
First method is to be wrapped up polymer surfaces with iron powder.Soft magnetism can effectively be increased by this method
The surface area of grain, subtracts less granular density, so that particle is lightened for popular, so that it may improve the sedimentation of prepared magnetorheological fluid 6
Stability and redispersibility.Such as polymethyl methacrylate has been wrapped up on carbonyl iron dust surface, means preparation in this way
The good composite magnetic particle of sedimentation stability out.
Second method is to subtract less granular density by the way that non-metal material surface to be coated to the method for soft magnetic particles,
This method can effectively improve the sedimentation stability of magnetorheological fluid 6.Such as polymer surfaces have been wrapped up into ferric oxide particles,
Means in this way prepare the spheric granules of improved properties.
Carrier fluid is that magnetic liquid becomes constituent extremely critical in liquid, is to enable to soft magnetic particles suspension liquid therein
Medium.The liquid such as hydrocarbon-type oil, water, synthetic mineral oil and silicone oil are relatively conventional carrier fluids.
Additive includes dispersing agent, sagging inhibitor, surfactant and stabilizer etc., and dispersing agent is used to optimize magnetorheological
The redispersibility of liquid 6, sagging inhibitor play the role of optimizing sedimentation stability.Such as with nanoscale magnetic-particle Co- γ-
Fe2O3,CrO2As additive, the sedimentation stability of MRF is improved.What stabilizer was used to that magnetic-particle is reduced or prevented to settle
It generates.Because specific gravity of the magnetic journey in magnetorheological fluid 6 is larger, be added a small amount of stabilizer can reduce generation precipitating or
The phenomenon that centrifuge separation.The stability of magnetorheological fluid 6 is mainly influenced by two kinds of factors: first is that particle mutually assemble formed it is very big
Group: second is that the precipitating that the sedimentation of particle itself, i.e. magnetic particle are likely to occur at any time, and pass through additive or surfactant
Measure can effectively reduce both phenomenons.
These substances are subjected to mixing according to the ratio of science and are obtained with magnetorheological fluid 6.The magnetic current of ideal high quality
Become the basic performance that liquid 6 must have several respects.One seeks to have the fundamental characteristics such as ideal magnetization, and then can ensure
Magnetorheological fluid 6 meets the use basic demand of 6 instrument of magnetorheological fluid, and this requires magnetic loop lines must keep narrow, accordingly
Cohesive force is relatively smaller, and magnetic conduction effect gets a promotion；The second is it needs to have biggish magnetic saturation, magnetic saturation can reach reason
Think that state can effectively amplify magnetic current effect, provides more guaranteed energy for particle；The third is energy loss should be smaller,
Working loss should all be in a relatively small value in whole process；The fourth is height magnetization and stable practical property
It can, it is necessary to assure the particle in magnetorheological fluid 6 is able to maintain ideal distribution state, is distributed more uniform and distribution and keeps
It is constant；The fifth is allowing for effectively preventing 6 loss problem of magnetorheological fluid, evade the anomalous variation of performance；The sixth is can be
Guarantee that there is ideal stability in biggish temperature range, it is ensured that its will not be generated because of temperature change change or
It influences；The seventh is the whole cost of raw material wants controllable and cheap, it can reduce cost and expand utilization rate.
In the embodiment of the present invention, when all coils no power, the working region MRF is presented without complementary field, magnetorheological fluid 6
The form of Newton fluid, shows good mobility, i.e., both driving link and Passive part can relative motion, status
For the off-state of magnetorheological engaging element；When some coil is powered, under magnetic fields, the magnetorheological fluid 6 of working region
Bingham plastic body can be converted into, actual test obtains that the MRF mobility under this state is low, viscosity is high, and by MRF
Improving and optimizating for liquid preparation means makes it have higher shear yield stress, can be by under Bingham plastic body state
MRF make active cylinder piece to drive passive cylinder piece to rotate, i.e. both driving link and Passive part one movement, status
For the engagement state of magnetorheological engaging element.
As shown in Fig. 2, in order to guarantee the action intensity between driving link and Passive part, in the embodiment of the present invention, the first magnetic
The input terminal of rheology gearshift 1 is the annulus being connected with gearbox case, and the ipsilateral of annulus is equipped with multiple radiuses differences
The first concentric tube piece；The input terminal of second magnetorheological gearshift 2 is the annulus being connected with transmission input shaft 8, and annulus
It is ipsilateral equipped with different the second concentric tube piece of multiple radiuses；Gear ring 5 is annulus；The outer ring of annulus it is ipsilateral be equipped with it is multiple
The different third concentric tube piece of radius, and be inserted into the gap between the first concentric tube piece, form the first clutch structure；Annulus
The ipsilateral fourth concentric tube piece different equipped with multiple radiuses of inner ring, and be inserted into the gap between the second concentric tube piece, shape
At the second clutch structure；Magnetorheological fluid 6 is filled in first clutch structure and the second clutch structure.Nested cylinder piece can be
Magnetorheological fluid 6 is in the state of high viscosity, is improved the active force between driving link and Passive part, is guaranteed biggish output work
Rate.
Since coil is used to generate the magnetic field of change magnetorheological fluid 6, need to guarantee that coil generates the coverage area in magnetic field, this
In inventive embodiments, first coil 3 is located at the side of the axis direction of the first clutch structure, and first coil 3 and the first clutch
The projection of structure axis direction is at least partly overlapped；Second coil 4 is located at the side of the axis direction of the second clutch structure, and
The projection of two coil 4 and the second clutch structure axis direction is at least partly overlapped.In view of needing to guarantee actual magnetorheological fluid 6
State change efficiency will also prevent from interfering with each other between the coil of non-corresponding and clutch, should guarantee as far as possible, first coil
3 and first clutch structure axis direction projection substantially overlap, the projection of the second coil 4 and the second clutch structure axis direction it is big
It causes to be overlapped.
As shown in figure 3, for convenience of explanation, the simpler reliable planetary gear of structure is used in the embodiment of the present invention
Group, gear ring 5 are equipped with internal tooth；Planetary gear set includes sun gear 10 and planetary gear 11；Planetary gear 11 is arranged in sun gear 10 and tooth
Between circle 5, sun gear 10 and transmission input shaft 8 are fixed, and the wheel shaft of planetary gear 11 passes through the output of planet carrier 12 and speed changer
Axis 9 connects, after actual fabrication is at finished product speed changer, using the embodiment of the present invention speed changer final molding having a size of 300 ×
250×300mm3, and using the size of the speed changer of traditional hydraulic control is 300 × 500 × 300mm3, directly reduce
50% volume.
First magnetorheological gearshift 1 and second magnetic current transformation of the electric vehicle under parked state, under discrete state
Blocking means 2 do not transmit power.In electric vehicle starting, the electronic control unit of automatic speed derailleur for electric vehicle first has to the first magnetic current of control
It converts blocking means 1 to engage, so that gear ring 5 is fixed on shell 7 rapidly, when the first magnetorheological gearshift 1 is completely in engagement state
When, sun gear 10 is used as active member, and planet carrier 12 is used as driven element, and electric car enters low or first gear, clutch 2 at this moment
In unbound state, power cannot be transmitted.After electric vehicle starts to be accelerated and reached the shifting speed value of top gear, become
Fast device electronic control unit is disconnected by the magnetorheological gearshift 1 of control first, and the second magnetorheological gearshift 2 starts to engage at this time,
When the second magnetorheological gearshift 2 is completely in engagement state, planetary gear 11 is used as driven member, and sun gear 10 and gear ring 5 are solid
It is set to one as driving link, realizes electric vehicle and run under direct high.Two clutches alternately switch, electric car ascending, descending
Shelves process terminates.When electric vehicle enters high gear operating status, the electronic control unit of speed changer by acquisition coherent signal come
Judged, determines whether electric vehicle downshifts for the gear that will be run.It only need to be in joint shape when downshift
The magnetorheological gearshift 2 of the second of state carries out lock out operation, while will be in the first magnetorheological gearshift 1 under discrete state
Engagement.
When one grade of transmitting, the engagement of the magnetorheological gearshift 1 of gearshift first, the magnetorheological gearshift of gearshift second
2 in separation.When speed changer rises to two grades, the magnetorheological gearshift 1 of gearshift first is discharged, gearshift second is magnetorheological
Gearshift 2 engages.Power is transmitted at this time for direct high.When the magnetorheological gearshift 1 of gearshift first, the second magnetic current convert
When blocking means 2 are in discrete state, gear is neutral gear.Since motor can realize reversion, reverse gear by control
It is to be realized by controlling the motor reversal under low gear transmission ratio.Pass through the first magnetorheological gearshift 1, the second magnetic
The appropriate switching of rheology gearshift 2, it can realize the switching of gear.Specific gear is as shown in table 1.
1 gear switch table of table
Upshift principle is, at one grade, power is not transmitted in the second magnetorheological separation of gearshift 2, and the first magnetorheological shift fills
It sets 1 and combines transmitting power.When starting to upshift, the second magnetorheological gearshift 2 is gradually combined, and the torque of transmitting is gradually increased, the
The torque that one magnetorheological gearshift 1 transmits is gradually reduced, and the torque that the first magnetorheological gearshift 1 transmits is realized when being zero to be divided
From the second magnetorheological gearshift 2 is completely combined later, completes upshift.
Downshift principle is that at two grades, power is transmitted by the second magnetorheological gearshift 2 completely.When starting downshift, the second magnetic
Rheology gearshift 2 is gradually disengaged, and into sliding operating condition of rubbing, the decline of 5 revolving speed of gear ring, the first magnetorheological gearshift 1 is gradually engaged,
When 5 revolving speed of gear ring is 0, the second magnetorheological gearshift 2 realizes separation, and the first magnetorheological gearshift 1 is fully engaged, and completes
Downshift.
In conclusion the embodiment of the invention provides a kind of speed changer executive device, the present invention magnetic current controlled by coil
Become the viscosity of liquid 6, the transmission clutch of Lai Shixian gearshift, not only fast response time, but also eliminates liquid in the prior art
Clutch for clutch control part is pressed, it can be by the volume-diminished of entire speed changer at least percentage 50%；The output of gearshift of the invention
There are gaps always between end and input terminal, and fill magnetorheological fluid 6, open reality by high viscosity of the magnetorheological fluid 6 in magnetic field
Existing transmission process can be relieved shift dress without realizing transmission by engaging or rubbing as existing gearshift
The abrasion for setting output end and input terminal extends the service life of speed changer；Gearshift output end of the invention and input terminal
Between there are gaps always, and fill magnetorheological fluid 6, in use, only there is apparent loss, magnetic to magnetorheological fluid 6
Rheology liquid 6 is low-viscosity fluid under no magnetic field environment, can be simple and convenient directly by the export replacement of the structures such as conduit.
The foregoing is only a preferred embodiment of the present invention, but scope of protection of the present invention is not limited thereto,
In the technical scope disclosed by the present invention, any changes or substitutions that can be easily thought of by anyone skilled in the art,
It should be covered by the protection scope of the present invention.
Claims (10)
1. a kind of speed changer executive device, which is characterized in that the speed changer executive device includes: the first magnetorheological gearshift
(1), the second magnetorheological gearshift (2), first coil (3), the second coil (4) and gear ring (5)；
The input terminal of the first magnetorheological gearshift (1) is fixedly connected with the shell of speed changer, output end and the gear ring
(5) it is fixedly connected；The input terminal of the second magnetic fluid transformation blocking means is fixedly connected with the input shaft (8) of speed changer, is exported
End is fixedly connected with the gear ring (5)；The gear ring (5), speed changer input shaft (8) pass through driving gear set and speed changer
Output shaft (9) connection；
It is filled out between the first magnetorheological gearshift (1) and the input terminal and output end of the second magnetorheological gearshift (2)
Filled with magnetorheological fluid (6)；The first coil (3) is used to generate the magnetorheological fluid in the first magnetorheological gearshift (1) of control
(6) magnetic field, second coil (4) are used to generate the magnetic of the magnetorheological fluid (6) in the second magnetorheological gearshift (2) of control
?.
2. speed changer executive device according to claim 1, which is characterized in that the first magnetorheological gearshift (1)
Input terminal be with gearbox case be connected the first annulus, and the first annulus it is ipsilateral be equipped with multiple radiuses it is different first
Concentric tube piece.
3. speed changer executive device according to claim 2, which is characterized in that the second magnetorheological gearshift (2)
Input terminal be the second annulus being connected with transmission input shaft (8), and the ipsilateral of the second annulus is equipped with multiple radiuses differences
The second concentric tube piece.
4. speed changer executive device according to claim 3, which is characterized in that the gear ring (5) is third annulus, third
The ipsilateral third concentric tube piece different equipped with multiple radiuses of the outer ring of annulus, and be inserted between the first concentric tube piece
In gap, the first clutch structure is formed；The ipsilateral fourth concentric tube piece different equipped with multiple radiuses of the inner ring of third annulus,
And be inserted into the gap between the second concentric tube piece, form the second clutch structure.
5. speed changer executive device according to claim 4, which is characterized in that first clutch structure and the second clutch
Magnetorheological fluid (6) are filled in structure.
6. speed changer executive device according to claim 5, which is characterized in that the first coil (3) is located at described
The side of the axis direction of one clutch structure, and the projection of first coil (3) and the first clutch structure axis direction is at least partly
It is overlapped.
7. according to speed changer executive device described in claim 5-6, which is characterized in that second coil (4) is located at described
The side of the axis direction of second clutch structure, and the projection at least portion of the second coil (4) and the second clutch structure axis direction
Divide and is overlapped.
8. speed changer executive device according to claim 4, which is characterized in that the gear ring (5) is equipped with internal tooth or external tooth,
And it is connected by the output shaft (9) of gear set and gearbox.
9. speed changer executive device according to claim 8, which is characterized in that the gear set is planetary gear set.
10. speed changer executive device according to claim 9, which is characterized in that the gear ring (5) is equipped with internal tooth；It is described
Planetary gear set includes sun gear (10) and planetary gear (11)；The planetary gear (11) is arranged in sun gear (10) and gear ring (5)
Between, the sun gear (10) and transmission input shaft (8) are fixed, the wheel shaft of the planetary gear (11) by planet carrier (12) with
The output shaft (9) of speed changer connects.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910329853.2A CN110131406A (en) | 2019-04-23 | 2019-04-23 | A kind of speed changer executive device |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910329853.2A CN110131406A (en) | 2019-04-23 | 2019-04-23 | A kind of speed changer executive device |
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| CN110131406A true CN110131406A (en) | 2019-08-16 |
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| CN201910329853.2A Pending CN110131406A (en) | 2019-04-23 | 2019-04-23 | A kind of speed changer executive device |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113389865A (en) * | 2021-06-07 | 2021-09-14 | 北京理工大学 | Planetary transmission based on magneto-rheological gear shifting |
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