CN110030342A - The mechanical double overdrive clutch self-adapting automatic gear shift device of planetary system output - Google Patents
The mechanical double overdrive clutch self-adapting automatic gear shift device of planetary system output Download PDFInfo
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- CN110030342A CN110030342A CN201910314882.1A CN201910314882A CN110030342A CN 110030342 A CN110030342 A CN 110030342A CN 201910314882 A CN201910314882 A CN 201910314882A CN 110030342 A CN110030342 A CN 110030342A
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- gear
- transmission
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- main shaft
- cam
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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
- F16H3/00—Toothed gearings for conveying rotary motion with variable gear ratio or for reversing rotary motion
- F16H3/44—Toothed gearings for conveying rotary motion with variable gear ratio or for reversing rotary motion using gears having orbital motion
- F16H3/74—Complexes, not using actuable speedchanging or regulating members, e.g. with gear ratio determined by free play of frictional or other forces
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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
- F16H2200/00—Transmissions for multiple ratios
- F16H2200/20—Transmissions using gears with orbital motion
- F16H2200/203—Transmissions using gears with orbital motion characterised by the engaging friction means not of the freewheel type, e.g. friction clutches or brakes
- F16H2200/2035—Transmissions using gears with orbital motion characterised by the engaging friction means not of the freewheel type, e.g. friction clutches or brakes with two engaging means
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
- Y02T10/00—Road transport of goods or passengers
- Y02T10/60—Other road transportation technologies with climate change mitigation effect
- Y02T10/72—Electric energy management in electromobility
Abstract
The invention discloses a kind of mechanical double overdrive clutch self-adapting automatic gear shift devices of planetary system output, and using planetary gear train output power, speed change system includes bottom gear transmission mechanism, reverse gear transmission and adaptive rate component;The transmission ratio I that there is reverse gear mechanism the power that will reverse gear main shaft is transferred to from countershaft, bottom gear transmission mechanism have the transmission ratio II that bottom gear power is transferred to main shaft from countershaft, and transmission ratio I is more than or equal to transmission ratio II;The present invention utilizes the reasonable cooperation of two freewheel clutches, so that overall structure is simple and compact, reverse gear and bottom gear, fast gear are driven and share drive path, and it does not interfere, it ensure that overall performance, adaptability is stronger, cooperates smooth nature with self-adapting automatic gear shift mechanism, it is exported using planetary reduction gear, output torque can be improved, and high-speed motor can be used as power source, improve whole efficiency, electric automobiles are not only applicable to, and are suitable for other change torque machinery transmission fields.
Description
Technical field
The present invention relates to a kind of vehicle transmission, in particular to a kind of mechanical double overdrive clutch of planetary system output is certainly
Adapt to automatic transmission.
Background technique
The general applying working condition of machine driven system is complicated, needs to distribute the transmission that torque realizes different loads and revolving speed, with
For electric vehicle, running environment is complicated and changeable.And the electric drive method that existing electric car generallys use is that motor driven is fixed
Speed ratio, high efficiency reasonable interval is narrow limited, causes vicious circle, thus generates following point:
It works in the range of the torque of a certain operating condition 1. can only meet.
2. can only improve the revolving speed of motor to meet road condition in constant-speed ratio, increase motor manufacturing cost.
3. the motor feels hot, service efficiency and service life decline;
4. such as to meet requirement of the electric car complex working condition to torque, it can only be by constantly increasing current of electric and turning
Speed can not only take the harm being large current discharge to battery into account, can only utilize peak power, peak torque and the big electricity of peak value of motor
Stream carrys out driving motor, does not follow the flash-over characteristic of power battery pack completely;
5. power battery pack capacitance sharply declines since the heavy-current discharge duration is long, peak value heavy-current discharge makes
Battery steep temperature rise, heating cause battery core internal resistance increased dramatically, and battery is greatly impacted and brings the damage that can not be retrieved
Evil, capacitance of storage and battery core service life fall sharply, and number of recharge cycles is quickly reduced, the problem that course continuation mileage can be brought shorter and shorter;
6. energy recovery efficiency is low;
7. being to increase function to increase square using high-speed motor acceleration and deceleration mechanism essence, high efficiency conversion can not achieve, in low-speed heave-load
Under operating condition, motor performance can be brought to deteriorate rapidly, hinder the problem of turning lower low efficiency;High current power supply and frequent heavy current impact,
Battery caused by overloading, controller, electric appliance and cable do not keep off damage, and especially big big battery shortens circulation mission, less economical;
But the prior art is by the driving method and technology path of constant-speed ratio utilized above that there are critical defects and can not
Overcome.
Existing automatic transmission passes through synchronizer, shift fork and tooth using solenoid valve and servo motor for more property controls
The component of machine such as ring realize upshift and downshift.It is more that Ji Ju forms components, it is necessary to cut off power, at this moment motor speed moment liter
To highest, and running car power suddenly disappears, speed prompt drop in the case where travelling drag effect, and algorithm complexity is difficult to realize in due course same
Step control, and require cutting conversion time in a short time, pause and transition in rhythm or melody sense is strong, poor reliability etc.;There is safety, comfort,
The problems such as reliability.
In order to solve problem above, present inventor has invented a series of cam self-adapting automatic gear shifting device, energy
Detect driving torque-revolving speed and running resistance-speed signal according to running resistance, make motor or engine output with
Traveling state of vehicle is in best match state always, realizes that vehicle traction torque and the balance of comprehensive running resistance control, convex
Self-adapting automatic gear shifting device load with traveling power variation change transmission ratio, in the case where not cutting off driving force adaptively with
Running resistance variation is automatic to carry out shift speed change, makes motor or engine always in high efficient area speedy carding process torque;It can expire
Motor vehicles run smoothly under sufficient mountain area, hills and heavy load conditions, improve safety;Form what separation combined using frictional disk
Structure has the advantages that be quick on the draw, and axial dimension is smaller, the above problem existing for very good solution electric vehicle.Although
It has the above advantages, cam self-adapting automatic gear shifting device is suitable for electric motorcycle due to using in mechanical automatic speed changing structure
The unidirectional delivery power of vehicle and electric bicycle is not suitable for needing the speed changer of the motor vehicle of bi-directional drive and mechanical device, if
Using traditional reverse gear mechanism, the volume of speed changer entirety and the complexity of structure not only will increase, and adaptive with cam
Answer automatic transimission that cannot merge well.
Therefore, it is necessary to one kind to improve above-mentioned cam self-adapting automatic gear shifting device, and it is stronger to increase adaptability
Reverse gear mechanism, device are not only able to carry out shift change automatically in the case where adaptively not cutting off driving force with running resistance variation
Speed, and can solve under bi-directional drive operating condition, it is able to satisfy the problem of complex condition high efficiency road forward and reverse travels,
And setting is simple and compact, cooperates smooth with cam self-adapting automatic gear shifting mechanism naturally, reducing manufacturing cost, guarantees the steady of transmission
It is qualitative.
Summary of the invention
In view of this, the object of the present invention is to provide a kind of mechanical double overdrive clutch of planetary system output is adaptively automatic
Speed changer, increases the stronger reverse gear mechanism of adaptability, and device is not only able to adaptively not cut off driving with running resistance variation
Automatically shift speed change is carried out in the case where power, and can solve under bi-directional drive operating condition, and complex condition high efficiency is able to satisfy
Road forward and reverse travel the problem of, and be arranged it is simple and compact, with cam self-adapting automatic gear shifting mechanism cooperation it is smooth naturally,
Manufacturing cost is reduced, guarantees the stability of transmission.
The mechanical double overdrive clutch self-adapting automatic gear shift device of planetary system output of the invention, including main shaft, planetary gear
Speed change system in system and main shaft, the speed change system includes bottom gear transmission mechanism, reverse gear transmission and adaptive rate
Component;
Adaptive rate component includes from dynamic friction piece, active friction part and speed change elastic element;
Active friction part and frictional drive pair is formed in such a way that rubbing surface is mutually matched from dynamic friction piece, speed change elasticity member
Part applies the pretightning force for making to be bonded transmission with active friction part from dynamic friction piece, described to pass through first axis cam from dynamic friction piece
Pair cooperates with spindle drive, when the first axis cam adjutant power is exported by main shaft, applies and becomes to from dynamic friction piece
The opposite axial thrust load of fast elastic element pretightning force;Driving power is input to one first freewheel clutch to which power to be input to
The active friction part;The main shaft is outputed power by planetary gear train;
It further include countershaft, the driving power also inputs countershaft;
The bottom gear transmission mechanism includes the second freewheel clutch, and the countershaft passes through the second freewheel clutch for low speed
Gear power is transferred to from dynamic friction piece;
The reverse gear mechanism is transferred to from dynamic friction piece by the power that can will reverse gear or is arranged in a manner of disconnecting the power that reverses gear;
There is the reverse gear mechanism power that will reverse gear to be transferred to transmission ratio I from dynamic friction piece, the bottom gear from countershaft
Transmission mechanism, which has, is transferred to the transmission ratio II from dynamic friction piece from countershaft for bottom gear power, and transmission ratio I is more than or equal to transmission
Than II;
The planetary gear train includes outer gear ring, planetary gear, planet carrier and sun gear, and the outer gear ring is fixed on cabinet.
Further, second freewheel clutch and reverse gear mechanism pass through second axial cam adjutant's power be transferred to from
Dynamic friction piece.
Further, power is input to sun gear and is exported by planet carrier by the main shaft;The second axial cam pair by
Cam sleeve with edge cam and the edge cam having from dynamic friction piece cooperatively form, and the cam sleeve is rotatably assorted
It covers on main shaft, it is described to pass through first axis cam auxiliary driving engagement sleeves on main shaft from dynamic friction piece.
The first freewheel clutch inner ring, which is rotatably assorted to be coated at cam sleeve and be driven with active friction part, to be cooperated;It drives
Dynamic power inputs the first freewheel clutch outer ring and power is input to countershaft simultaneously by the first freewheel clutch outer ring;
The sun gear and main shaft coaxial transmission cooperate, and are equipped with power output shaft with planet carrier transmission cooperation, described
Power output shaft is coaxial with main shaft.
Further, the bottom gear transmission mechanism further includes bottom gear driven gear and engages with bottom gear driven gear
The outer ring transmission of bottom gear driving gear, second freewheel clutch is equipped with or is directly formed bottom gear driven tooth
Wheel, the bottom gear driving gear transmission are equipped in countershaft;The reverse gear mechanism include reverse gear driving gear and with reverse gear
The driven gear that reverses gear of driving gear engagement, the engageable or isolated mode of the driving gear that reverses gear are set to countershaft, reverse gear
The inner ring of driven gear and second freewheel clutch and cam sleeve transmission cooperate and are set in rotation with main shaft;It is described
Transmission ratio I is greater than transmission ratio II.
Further, the driving gear that reverses gear is set to countershaft in such a way that electromagnetism gearshift is engageable or separates,
It is described to be used to switch power positive and negative rotation input simultaneously with electromagnetism gearshift.
Further, the electromagnetism gearshift includes active swing arm, shift shaft, selector fork and two electromagnetism shifts
Device, described two electromagnetism selectors are used to drive active swing arm around the axis oscillating of shift shaft and drive shift shaft around described
Axis of shifting gears rotates, and the shift shaft drives selector fork around the axis oscillating and to complete to shift gears.
Further, the electromagnetism gearshift is additionally provided with positioning mechanism, and the positioning mechanism includes being set to active swing arm
Or it is set to the positioning pellet with the positioning element of the servo-actuated connection of active swing arm with pretightning force and is set to transmission case
The positioning pedestal of body, in the positioning pedestal setting with the cooperation of positioning pellet and position and reverse gear mechanism engagement or can separate
Corresponding location dimples;The electromagnetism gearshift be additionally provided with for detect gear shift whether position sensing component in place.
Further, the speed change elastic element is speed change disc spring, and the speed change disc spring is coated at main shaft and one end passes through
Plane bearing is resisted from dynamic friction piece, and the plane bearing is the plane rolling bearing of radially double small ball;
It is equipped with drive sleeve with the transmission cooperation of first freewheel clutch outer ring, the drive sleeve is used to pass with rotor
Dynamic cooperation or integrally formed input power, and axially extending formation axle journal is rotatably assorted and is supported in cabinet, the active friction part,
It is respectively positioned in the cavity between drive sleeve and main shaft from dynamic friction piece and speed change disc spring.
Further, second freewheel clutch and reverse gear mechanism pass through third axial cam adjutant's power and are transferred to
For two axial cam pairs to be transferred to from dynamic friction piece, the third axial cam pair is coated at the second of main shaft by being rotatably assorted
The edge cam of cam sleeve is cooperatively formed from the edge cam of one end of dynamic friction piece backwards with cam sleeve;
It is driven cooperation with first freewheel clutch outer ring and is rotatably assorted and be coated at cam sleeve or the second camshaft
It is arranged with intermediate driving gear, the countershaft gearing is equipped with the intermediate driven tooth with intermediate driving gear transmission cooperation
Wheel;
Outer end extends to form the axle sleeve that transmission cooperation is coated at main shaft, axle sleeve to the second freewheel clutch inner ring in the axial direction
It is rotatably assorted and is supported in mission case, the other end and the transmission of the second cam sleeve cooperate;
Outer ring axial direction one end of first freewheel clutch and intermediate driving gear transmission cooperate, and the other end is fixedly connected
In drive sleeve, the main shaft power output end, which is passed through and is rotatably assorted, is supported in mission case.
Further, the sleeve outer circle of first freewheel clutch is rotatably assorted by the first rolling bearing is supported in change
Fast device cabinet;Second cam sleeve is rotatably assorted by the second rolling bearing and is supported in mission case, second axis of rolling
It holds between reverse gear driven gear and intermediate driving gear, the intermediate driving gear axially extends to form axle journal, and the axis
Neck, which also passes through the 5th rolling bearing and is rotatably assorted, is supported in cabinet, passes through between the intermediate driving gear and the second rolling bearing
First plane bearing is rotatably assorted;The drive sleeve inner circle is rotatably assorted by the 4th rolling bearing is supported in main shaft;
The power output shaft, which is integrally formed, is equipped with transmission wheel disc, and the planet carrier is fixed in circumferencial direction and transmission wheel disc
Connection, the driving wheel dish axle form axle bed to recess, and main shaft coaxial transmission fits through the sun gear and the branch that is rotatably assorted
It supports in the axle bed.
The beneficial effects of the present invention are: the mechanical double overdrive clutch self-adapting automatic gear shift that planetary system of the invention exports
Device, all advantages with existing cam self-adapting automatic gear shifting device turn as can detecting driving torque-according to running resistance
Speed and running resistance-speed signal make output power of motor and traveling state of vehicle be in best match state always, real
Existing vehicle traction torque and the balance of comprehensive running resistance control, in the case where not cutting off driving force adaptively with running resistance
Variation is automatic to carry out shift speed change;It can satisfy and used under mountain area, hills and heavy load conditions, keep motor load change gentle,
Motor vehicles run smoothly, and improve safety;
Using the reasonable cooperation of two freewheel clutches, transmission ratio is rationally arranged in the structure that will reverse gear and low speed retaining device, makes
It is simple and compact to obtain overall structure, reverse gear and bottom gear, fast gear are driven shared drive path, and do not interfere, and ensure that
The overall performance of Adaptive Mechanical automatic transmission of the invention, adaptability is stronger, and mechanism matches with self-adapting automatic gear shift
It closes smooth naturally, reducing manufacturing cost, guarantees the stability of transmission, be not only applicable to electric automobiles, and be suitable for other
Become torque machinery transmission field;It is exported using planetary reduction gear, output torque can be improved, and high-speed motor can be used as power
Whole efficiency is improved in source, is not only applicable to electric automobiles, and be suitable for other change torque machinery transmission fields.
Detailed description of the invention
The invention will be further described with reference to the accompanying drawings and examples.
Fig. 1 is axial section structural schematic diagram of the invention;
Fig. 2 is electromagnetism gear shifting structure schematic diagram;
The position Fig. 3 electromagnetism gear shifting structure cross-sectional view;
Fig. 4 is the schematic structural view of the invention using friction plate structure;
Fig. 5 is friction plate structure enlarged drawing.
Specific embodiment
Fig. 1 is axial section structural schematic diagram of the invention, and Fig. 2 is electromagnetism gear shifting structure schematic diagram, the shift of the position Fig. 3 electromagnetism
Structure sectional view, as shown in the figure: the mechanical double overdrive clutch self-adapting automatic gear shift device of planetary system output of the invention, including
Speed change system on cabinet 20, main shaft 1, planetary gear train and main shaft 1, the speed change system include bottom gear transmission mechanism, reverse gear
Transmission mechanism and adaptive rate component;
Adaptive rate component includes from dynamic friction piece, active friction part and speed change elastic element;
Active friction part and frictional drive pair is formed in such a way that rubbing surface is mutually matched from dynamic friction piece, as shown in Figure 1,
Active friction part 18 and be respectively torus axial direction inner conical drogue and torus axial direction external conical sleeve from dynamic friction piece 2, torus is axial
Inner conical drogue is equipped with axial inner conical surface and is coated at torus axial direction external conical sleeve, and torus axial direction external conical sleeve is equipped with and torus axial direction
The axial male cone (strobilus masculinus) that the axial inner conical surface of inner conical drogue matches forms frictional engagement transmission by the mutually matched conical surface or divides
From details are not described herein;
Certainly, frictional drive pair can also use friction plate structure as shown in Figure 4, Figure 5, active friction part 18 ' and the
One freewheel clutch inner ring is integrally formed or transmission cooperation, and active friction part 18 ' is equipped with active friction plate group 18a ', driven
Friction member is equipped with the driven friction disk group matched with active friction plate 18a ', fit structure and existing friction disk type clutch
Device is similar, but the detachable setting of this structural friction piece, can need to dismount according to overall structure, to guarantee axial dimension;
Speed change elastic element 19, which applies, makes to be bonded the pretightning force being driven with active friction part from dynamic friction piece, described driven to rub
Part is wiped to cooperate by first axis cam pair and the transmission of main shaft 1, when the first axis cam adjutant power is exported by main shaft,
To the axial thrust load opposite with speed change elastic element pretightning force from dynamic friction piece application;First axis cam pair 27 is phase interworking
The axial cam (including edge cam or spiral cam) of conjunction, when rotating from dynamic friction piece, first axis cam pair 27 is generated
Axial and two component of circumferencial direction, wherein circumferencial direction component output power, axial thrust load are acted on from dynamic friction piece and are applied
It is added on speed change elastic element, that is to say, that the rotation direction of first axis cam pair is related with power output rotation direction, this field skill
Art personnel according to the above records, under the premise of learning power output direction, 27 which kind of rotation of first axis cam pair can be learnt
To the axial thrust load that can apply which kind of direction, details are not described herein;;As shown, due to passing through first axle from dynamic friction piece 2
Engagement sleeves are driven on main shaft 1 to cam pair 27, and therefore, first axis cam pair 27 is spiral cam, and details are not described herein;It drives
Power is input to one first freewheel clutch to which power is input to the active friction part;The main shaft passes through planetary gear
System outputs power, and can be realized by reasonable mechanical layout, details are not described herein.
It further include countershaft 12, the driving power also inputs countershaft 12;
The bottom gear transmission mechanism includes the second freewheel clutch, and the countershaft passes through the second freewheel clutch for low speed
Gear power is transferred to from dynamic friction piece;
The reverse gear mechanism is transferred to from dynamic friction piece 2 by the power that can will reverse gear or is set in a manner of disconnecting the power that reverses gear
It sets;Generally be configured using engaging gear structure, can disconnect reverse gear mechanism and the transmission from dynamic friction piece and also disconnect with it is secondary
The transmission of axis 12, is able to achieve goal of the invention;
The transmission ratio I that there is the reverse gear mechanism power that will reverse gear main shaft 1 is transferred to from countershaft 12, the bottom gear transmission
Mechanism has the transmission ratio II that bottom gear power is transferred to main shaft 1 from countershaft 12, and transmission ratio I is more than or equal to transmission ratio II;Then
In reverse gear, the second freewheel clutch 6 surmounts, and it is (low that inner ring 6a (rotation direction with reverse gear identical) revolving speed is slower than outer ring 6b
Speed gear and reverse gear by countershaft input power), formation surmounts, and reverse gear mechanism is smoothly driven, and otherwise can lock.
The planetary gear train includes outer gear ring 31, planetary gear 30, planet carrier 32 and sun gear 29, and the outer gear ring is fixed
In cabinet 20.
Since bottom gear transmission mechanism is different with reverse gear mechanism transmission direction, axial cam is secondary preferably bidirectional defeated
Cam structure out.
In the present embodiment, second freewheel clutch 6 and reverse gear mechanism pass through the second axial cam pair 26 for power
It is transferred to from dynamic friction piece 2, as shown,;Since bottom gear transmission mechanism is different with reverse gear mechanism transmission direction, the
The cam structure of the secondary preferably bidirectional output of two axial cams.
In the present embodiment, power is input to sun gear 30 and is exported by planet carrier by the main shaft 1;Described second is axial convex
Wheel set 26 is cooperatively formed by the cam sleeve 16 with edge cam and from the edge cam that dynamic friction piece 2 has, the cam
Axle sleeve 16, which is rotatably assorted, to be covered on main shaft 1, described to be driven engagement sleeves in main shaft by first axis cam pair 27 from dynamic friction piece 2
On 1;First freewheel clutch, the 4 inner ring 4a, which is rotatably assorted, is coated at cam sleeve 22 and end extends to form extended segment and master
The transmission cooperation of dynamic friction piece 18, drive sleeve 3 matches to merge with 4 outer ring 4b of the first freewheel clutch transmission is input to pair for power simultaneously
Axis 12, structure setting make structure of the invention compact.
The driving power is input to the outer ring 4b of the first freewheel clutch 4, as shown, with first overdrive clutch
The outer ring transmission cooperation of device is equipped with drive sleeve 3, and the drive sleeve 3 is used to be driven cooperation input power or and motor with rotor
Rotor is integrally formed, and axially extending formation axle journal is rotatably assorted by the 6th rolling bearing 24 and is supported in cabinet, the active
Friction member 18 is respectively positioned in the cavity between drive sleeve and main shaft from dynamic friction piece 2 and speed change disc spring 19;It is compact-sized, it integrates
Property is stronger, facilitates the arrangement of electric vehicle;And cooperated by the support of drive sleeve 3, so that speed changer overall structure rigidity is stronger, such as
Shown in figure, power is inputted outer ring 4b by the transition drive sleeve of a transmission cooperation by drive sleeve 3, and improves connection rigidity;It is described
The inner ring 4a and active friction part 18 of first freewheel clutch 4 are sequentially connected;The driving power passes through the first freewheel clutch
Outer ring also inputs countershaft 12, that is, driving power divides two-way to input, and existing any machine can be used in the mode of input countershaft 12
Tool drive mechanism, such as gear, chain, even direct-connected transmission etc., details are not described herein.
First freewheel clutch, the 4 inner ring 4a be rotatably assorted be coated at cam sleeve and end extend to form extended segment with
The transmission cooperation of active friction part 18, as shown, 4 inner ring 4a of the first freewheel clutch transmission cooperation is equipped with a middle transition set,
Middle transition set is coated at the extended segment by spline (having interference), forms positive drive for power and inputs active friction part
18;Power is simultaneously input to by the first freewheel clutch outer ring by driving power input 4 outer ring 4b of the first freewheel clutch simultaneously
Countershaft 12;
The sun gear 29 cooperates with 1 coaxial transmission of main shaft, is equipped with power output shaft with the planet carrier 32 transmission cooperation
34, the power output shaft 34 and main shaft 1 are coaxial;As shown, the power output shaft 34, which is integrally formed, is equipped with transmission wheel disc
36, the planet carrier 32 is fixedly connected in circumferencial direction with transmission wheel disc 36, and 36 axial depression of transmission wheel disc forms axle bed
(forming the axle bed coaxial with main shaft, be used for rotational support main shaft), 1 coaxial transmission of main shaft fits through the sun gear 29 and turns
Dynamic cooperation is supported in the axle bed, so that main shaft and power output shaft form the entirety supported mutually, has preferable globality
Transmission;As shown, power output shaft 34 passes through 35 rotational support of 7th bearing in mission case 22, main shaft passes through third axis
It holds to be rotatably assorted and is supported in mission case 22.
In the present embodiment, the bottom gear transmission mechanism further includes bottom gear driven gear and nibbles with bottom gear driven gear
The outer ring 6b transmission of the bottom gear driving gear 7 of conjunction, second freewheel clutch 6 is equipped with or is directly formed bottom gear
Driven gear, the transmission of bottom gear driving gear 7 are equipped in countershaft 12;The reverse gear mechanism includes the driving gear that reverses gear
9 and the driven gear 8 that reverses gear that is engaged with the driving gear 9 that reverses gear, the driving gear 9 that reverses gear engageable (transmission) or separation (turn
It is dynamic) mode be set to countershaft, the inner ring 6a and cam sleeve 16 of reverse gear driven gear 8 and second freewheel clutch 6 are passed
It is dynamic to cooperate and be set in rotation with main shaft 1,16 one of the inner ring 6a of the second freewheel clutch 6 and cam sleeve in the present embodiment
Molding;As shown, the driving gear 9 that reverses gear is rotatably assorted, (needle bearing) is set to countershaft 12, by that slidably and can be driven
The engaging member being set on countershaft be formed in the engagement or isolated cooperation of countershaft, belong to conventional connected structure, herein not
It repeats again;The transmission ratio I is greater than transmission ratio II, to guarantee the smoothness of transmission, avoids the occurrence of locked.
In the present embodiment, the driving gear 9 that reverses gear is arranged in such a way that electromagnetism gearshift 10 is engageable or separates
It is described to be used to switch power positive and negative rotation input simultaneously with electromagnetism gearshift in countershaft 12, it is changed into electromagnetism gearshift
During reversing gear, signal is sent directly to electric machine control system, controls motor reversal, realization is reversed gear;Using general signal
Collecting mechanism or switch can be realized.
In the present embodiment, the electromagnetism gearshift includes active swing arm 104, shift shaft 105,106 and of selector fork
Two electromagnetism selectors (electromagnetism selector 101 and electromagnetism selector 102), described two electromagnetism selectors are actively put for driving
Arm is rotated around the axis oscillating and drive shift shaft of shift shaft around the shift axis, and the shift shaft drives shift to dial
Fork is around the axis oscillating and completes to shift gears;As shown, electromagnetism selector 101,102 is set side by side in the present embodiment, and point
The both ends that (or release) active swing arm Yong Yu not driven, swing active swing arm 104 can around a center line, the shifting shaft is with axis
Line coincides with that the center line is servo-actuated to be connected to active swing arm 104 active swing arm is driven to move around the axis oscillating and band of shift shaft
Gear shaft is rotated around the axis, and the shift shaft 105 drives selector fork 106 around the axis oscillating and to drive connector
(synchronizer) 17 completes shift, and connector (synchronizer) shift belongs to the prior art, and details are not described herein;Certainly, two electromagnetism
Selector (electromagnetism selector 101 and electromagnetism selector 102) can be opposed structure, carry out active swing arm toward physical pendulum from two sides
Dynamic driving, equally can be achieved goal of the invention, details are not described herein;Electromagnetism selector is the structure with reciprocating push rod, when energization
Reciprocating push rod release and active swing arm pushed to swing after immediately return, return generally use return spring structure, it is no longer superfluous herein
It states.
In the present embodiment, the electromagnetism gearshift is additionally provided with positioning mechanism 103, and the positioning mechanism 103 includes setting
In active swing arm or it is set to the positioning pellet 103b with pretightning force with the positioning element 107 of the servo-actuated connection of active swing arm
It is arranged and can cooperates with positioning pellet 103b with is set on the positioning pedestal 103c, the positioning pedestal 103c of mission case
And position engages or separates corresponding location dimples with reverse gear mechanism;As shown, positioning pellet is set in the present embodiment
The positioning element 107, positioning element 107 are equipped with the location hole 103a of setting positioning pellet 103b, and positioning hole setting is useful
In to positioning pellet 103b apply outward with the retaining spring 103d of the pretightning force of location dimples location fit;During the swing
It positions pellet to slide on positioning pedestal surface, pellet is positioned when sliding at location dimples and enters pit under pretightning force effect
Positioning is formed, certainly, pit is smooth structure, and pellet is positioned under certain thrust can remove pit, completes subsequent shift journey
Sequence;The electromagnetism gearshift be additionally provided with for detect gear shift whether position sensing component in place, sensory package is general
Using Hall element and magnet steel corresponding with Hall element.
In the present embodiment, the speed change elastic element be speed change disc spring 19, the speed change disc spring 19 be coated at main shaft 1 and
One end is resisted by plane bearing 28 from dynamic friction piece 2, and the plane bearing 28 is the plane rolling of radially double small ball
Bearing, the use that small ball refers to ball identical compared with bearing capacity in the prior art are small;Using double-row balls, held in plane bearing
Under conditions of carrying same load, the parameter of ball can be reduced, strong with stability of rotation, same load revolving speed height, bearing capacity
Feature, and axially mounted size can be reduced.
In the present embodiment, the outer ring 4b transmission cooperation with first freewheel clutch 4 is equipped with intermediate driving gear 15, such as
Shown in figure, intermediate driving gear 15 forms the Step Shaft of necking down, and the outer ring 4b of the first freewheel clutch 4 is fixedly connected with a necking down
Step axle sleeve, step axle sleeve are coated at the Step Shaft and form the restriction ability for being driven and cooperating, and having radial, guarantee formation biography
It moves and there is certain support effect;The countershaft 12 is driven the centre being equipped with the intermediate transmission of driving gear 15 cooperation
Driven gear 14;
In the present embodiment, second freewheel clutch 6 and reverse gear mechanism pass through third axial cam pair 26 ' for power
The second axial cam pair 26 is transferred to be transferred to from dynamic friction piece 2, the third axial cam pair 26 ' is outer by being rotatably assorted
The edge cam and cam sleeve 16 for being placed on the second cam sleeve 25 of main shaft are backwards to the edge cam from one end of dynamic friction piece 2
It cooperatively forms;Backwards to the distal end compared with from dynamic friction piece 2 is referred to from one end of dynamic friction piece 2, such as the left end of figure;
It is driven cooperation with the 4 outer ring 4b of the first freewheel clutch and is rotatably assorted and be coated at cam sleeve or the second cam
Axle sleeve is equipped with intermediate driving gear 15, as shown, the intermediate driving gear 15 is set in rotation with by needle bearing 5
Second cam sleeve 25;The countershaft 12 is driven the intermediate driven gear being equipped with the intermediate transmission of driving gear 5 cooperation
14;
Outer end extends to form the axle sleeve that transmission cooperation is coated at main shaft 1 to second freewheel clutch, the 6 inner ring 6b in the axial direction,
The outside (left end in figure) to speed changer is outward referred to, axle sleeve, which is rotatably assorted, is supported in mission case, the other end (right end)
It is driven and cooperates with the second cam sleeve 25;
Outer ring 4b axial direction one end of first freewheel clutch 4 and the intermediate transmission of driving gear 5 cooperate, and the other end is fixed
It is connected to drive sleeve (transmission), 1 power output end of main shaft, which is passed through and is rotatably assorted, is supported in mission case 20.
In the present embodiment, the sleeve outer circle of the inner ring 6b of second freewheel clutch 6 passes through 22 turns of the first rolling bearing
Dynamic cooperation is supported in mission case 20;Second cam sleeve 25 is rotatably assorted by the second rolling bearing 21 and is supported in speed changer
Cabinet 20, second rolling bearing 21 are located between reverse gear driven gear 8 and intermediate driving gear 5, the intermediate driving tooth
Take turns 5 axially extending formation axle journals, and the axle journal also passes through the 5th rolling bearing 11 and is rotatably assorted and is supported in cabinet 20, the centre
It is rotatably assorted between driving gear 5 and the second rolling bearing 21 by the first plane bearing 13 (plane rolling bearing);The biography
3 inner circles of dynamic set are rotatably assorted by the 4th rolling bearing 23 and are supported in main shaft 1.
1 power output end of main shaft, which passes through and passes through third rolling bearing 33 and be rotatably assorted, is supported in mission case
20, power output shaft 34 is rotatably assorted by the 7th rolling bearing 35 and is supported in mission case and is respectively in planetary gear with main shaft
The two sides of system and coaxial arrangement, the drive sleeve are rotatably assorted by the 4th rolling bearing 23 and are supported in main shaft 1;As shown,
Each rolling bearing is supported on the ribs formed on cabinet or end cap, and details are not described herein;The ribs pair of formation
Cabinet itself also has booster action.
The corresponding rotation in power output input segment in the present embodiment above structure, on main shaft or/and cam sleeve
It is supported in mission case, in the structure, cam sleeve is coated at main shaft, the structure for forming transmission and supporting mutually, Neng Gouchuan
It passs biggish torque and will not occur bending and deformation, the scantling under same bearer ability condition can be greatly reduced;For each
A transmission carrying (power handover outputs and inputs segment) component, is respectively supported at mission case, so that main shaft and transmission
Axle sleeve longer can be arranged, and additional bending moment caused by torque is passed to cabinet as having support, so that from
Body transmits high torque, and the revolving speed (identical components size) being greatly improved under large torque, realizes large torque, high revolving speed
With lightweight index, the mutual support of transverse bearing and axle sleeve and main shaft, also make speed changer at high speeds and have compared with
Good stationarity and low noise, compared with the existing technology, maximum speed >=15000 for driving motor and high deceleration device
Rev/min, for efficient lightweight wheel hub Electric Motor Wheel iso-variable velocity, mechanism has great advantages energy conservation and environmental protection, be suitable in
It is the use of main syllabus target pure electric vehicle with energy conservation and environmental protection, certainly, the present invention is not only applicable to electric automobiles, and is suitable for
Other change torque machinery transmission fields.
In the present invention, the left and right of attached drawing is subject in documented left and right, and documented transmission connection includes the prior art
In all transmission connecting structure, including spline, flat key, bolt be fixedly connected etc., and details are not described herein.
Above embodiments are optimum structure of the invention, are not limiting the scope of the present invention;In connection side
The scheme adjusted in formula, the realization without influencing this hair goal of the invention.
The fast gear power transmission line of the present embodiment:
Power → active friction part 18 → from 2 → first axis of dynamic friction piece cam pair → 1 → planetary gear train of main shaft → moves
Power output shaft → output power;
The second freewheel clutch surmounts at this time, and resistance transfer route: planetary gear train → main shaft 1 → first axis cam pair
→ from dynamic friction piece 2 → speed change disc spring;Axial force and speed change dish is compressed to applying from dynamic friction piece 2 by first axis cam pair
Spring, when running resistance is increased to a timing, which overcomes speed change disc spring, makes active friction part 18 and divide from dynamic friction piece 2
From power is transmitted by following routes, i.e. bottom gear power transmission line:
Power → first freewheel clutch 4 outer ring 4b → 12 → bottom gear of countershaft driving gear → second freewheel clutch
The axial cam of inner ring 6a → second pair 26 ' of 6 freewheel clutch of outer ring 6b → second → convex from 2 → first axis of dynamic friction piece
Wheel set 26 → from 27 → main shaft of dynamic friction piece 2 → axial cam pair → planetary gear train → power output shaft → output power;.
Bottom gear power transmission line simultaneously also pass through following route: first axis cam pair 26 → from dynamic friction piece 2 →
Speed change disc spring is compressed, prevents occurring compression speed change disc spring reciprocating compression in bottom gear transmission process, so that bottom gear be prevented to be driven
When active friction part 18 and be bonded from dynamic friction piece 2.
Have above-mentioned transfer route can be seen that the present invention at runtime, active friction part 18 with from dynamic friction piece 8 in speed change
It is fitted closely under disc spring effect, forms the automatic transmission of a holding certain pressure, and can be by increasing variable-speed shaft
The axial width of set adjusts pressure needed for clutch engagement, reaches transmission purpose, at this point, power drive active friction part 18,
From dynamic friction piece 2, main shaft 1, main shaft 1 is made to pass through planetary gear train output power;The second freewheel clutch, which is in, at this time surmounts state.
Resistance is greater than driving force when motor vehicle starting, and resistance forces cam sleeve to turn an angle round about,
Under the action of first axis cam pair, speed change disc spring is compressed from dynamic friction piece 2;It is separated from dynamic friction piece 2 and active friction part 18,
Synchronous, the engagement of the second freewheel clutch, output power is with the rotation of bottom gear speed;Therefore, bottom gear starting, contracting are realized automatically
The short starting time, reduce starting power.At the same time, speed change disc spring absorbs resistance of motion square energy, to restore fast gear gear
It transmits power and stores standby potential energy.
After starting successfully, running resistance is reduced, when pressure caused by component is reduced to less than speed change disc spring, because being transported
Dynamic resistance is compressed and generates speed change disc spring pressure and discharge rapidly under promotion, completes to restore from dynamic friction piece 2 and active friction part 18
State is fitted closely, bottom gear freewheel clutch, which is in, surmounts state.
In driving process, as the variation self shifter principle of the resistance of motion is same as above, in the feelings for not needing cutting driving force
Variable block is realized under condition, keeps entire locomotive operation steady, safe and low consumption, and also transfer route is simplified, and transmission efficiency is improved.
Reverse gear route:
Power → first freewheel clutch 4 outer ring 4b → countershaft 12 → driving gear that reverses gear → driven gear → the of reversing gear
Two axial cam pair 26 ' → first axis cam pairs 26 → from dynamic friction piece 2 → axial cam pair 27 → main shaft, 1 → planetary gear train
→ power output shaft 34 exports the power that reverses gear.
At this point, due to the transmission ratio that reverses gear be greater than bottom gear transmission ratio and be it is reversed, then the second freewheel clutch surmounts, by
It is faster than inner ring in rotating reversed and outer ring revolving speed, the first freewheel clutch surmounts, and realizes reverse gear;Certainly, bottom gear is driven
It is decreasing transmission with reverse gear, details are not described herein.
Finally, it is stated that the above examples are only used to illustrate the technical scheme of the present invention and are not limiting, although referring to compared with
Good embodiment describes the invention in detail, those skilled in the art should understand that, it can be to skill of the invention
Art scheme is modified or replaced equivalently, and without departing from the spirit and scope of the technical solution of the present invention, should all be covered at this
In the scope of the claims of invention.
Claims (10)
1. a kind of mechanical double overdrive clutch self-adapting automatic gear shift device of planetary system output, it is characterised in that: including main shaft, row
Speed change system on star wheel series and main shaft, the speed change system include bottom gear transmission mechanism, reverse gear transmission and adaptive
Variable speed assembly;
Adaptive rate component includes from dynamic friction piece, active friction part and speed change elastic element;
Active friction part and frictional drive pair is formed in such a way that rubbing surface is mutually matched from dynamic friction piece, speed change elastic element is applied
Add make to be bonded from dynamic friction piece with active friction part transmission pretightning force, it is described from dynamic friction piece by first axis cam pair with
Spindle drive cooperation when the first axis cam adjutant power is exported by main shaft, applies and speed change bullet to from dynamic friction piece
The property opposite axial thrust load of element pretightning force;It is described to which power to be input to that driving power is input to one first freewheel clutch
Active friction part;The main shaft is outputed power by planetary gear train;
It further include countershaft, the driving power also inputs countershaft;
The bottom gear transmission mechanism includes the second freewheel clutch, and the countershaft is moved bottom gear by the second freewheel clutch
Power is transferred to from dynamic friction piece;
The reverse gear mechanism is transferred to from dynamic friction piece by the power that can will reverse gear or is arranged in a manner of disconnecting the power that reverses gear;
There is the reverse gear mechanism power that will reverse gear to be transferred to transmission ratio I from dynamic friction piece, the bottom gear transmission from countershaft
Mechanism, which has, is transferred to the transmission ratio II from dynamic friction piece from countershaft for bottom gear power, and transmission ratio I is more than or equal to transmission ratio II;
The planetary gear train includes outer gear ring, planetary gear, planet carrier and sun gear, and the outer gear ring is fixed on cabinet.
2. the mechanical double overdrive clutch self-adapting automatic gear shift device of planetary system output according to claim 1, feature
Be: second freewheel clutch and reverse gear mechanism pass through second axial cam adjutant's power and are transferred to from dynamic friction piece.
3. the mechanical double overdrive clutch self-adapting automatic gear shift device of planetary system output according to claim 2, feature
Be: power is input to sun gear and is exported by planet carrier by the main shaft;The second axial cam pair is by convex with end face
The cam sleeve of wheel and the edge cam having from dynamic friction piece cooperatively form, and the cam sleeve, which is rotatably assorted, to be covered in main shaft
On, it is described to pass through first axis cam auxiliary driving engagement sleeves on main shaft from dynamic friction piece.
The first freewheel clutch inner ring, which is rotatably assorted to be coated at cam sleeve and be driven with active friction part, to be cooperated;Driving is dynamic
Power inputs the first freewheel clutch outer ring and power is input to countershaft simultaneously by the first freewheel clutch outer ring;
The sun gear and main shaft coaxial transmission cooperate, and are equipped with power output shaft, the power with planet carrier transmission cooperation
Output shaft is coaxial with main shaft.
4. the mechanical double overdrive clutch self-adapting automatic gear shift device of planetary system output according to claim 3, feature
Be: the bottom gear transmission mechanism further includes bottom gear driven gear and the bottom gear engaged with bottom gear driven gear active
The outer ring transmission of gear, second freewheel clutch is equipped with or is directly formed bottom gear driven gear, the low speed
Gear driving gear transmission is equipped in countershaft;The reverse gear mechanism includes reversing gear driving gear and to engage with the driving gear that reverses gear
The driven gear that reverses gear, the engageable or isolated mode of the driving gear that reverses gear is set to countershaft, reverse gear driven gear and institute
The inner ring and cam sleeve transmission for stating the second freewheel clutch cooperate and are set in rotation with main shaft;The transmission ratio I is greater than
Transmission ratio II.
5. the mechanical double overdrive clutch self-adapting automatic gear shift device of planetary system output according to claim 4, feature
Be: the driving gear that reverses gear is set to countershaft, described and electromagnetism in such a way that electromagnetism gearshift is engageable or separates
Gearshift is used to switch power positive and negative rotation input simultaneously.
6. the mechanical double overdrive clutch self-adapting automatic gear shift device of planetary system output according to claim 5, feature
Be: the electromagnetism gearshift includes active swing arm, shift shaft, selector fork and two electromagnetism selectors, described two
Electromagnetism selector is used to drive active swing arm around the axis oscillating of shift shaft and shift shaft is driven to turn around the shift axis
Dynamic, the shift shaft drives selector fork around the axis oscillating and to complete to shift gears.
7. the mechanical double overdrive clutch self-adapting automatic gear shift device of planetary system output according to claim 6, feature
Be: the electromagnetism gearshift is additionally provided with positioning mechanism, and the positioning mechanism includes being set to active swing arm or being set to
Positioning pellet with the positioning element of the servo-actuated connection of active swing arm with pretightning force and the positioning base for being set to mission case
Seat, in the positioning pedestal setting with can and the cooperation of positioning pellet and position and reverse gear mechanism engagement or separate corresponding positioning
Pit;The electromagnetism gearshift be additionally provided with for detect gear shift whether position sensing component in place.
8. the mechanical double overdrive clutch self-adapting automatic gear shift device of planetary system output according to claim 3, feature
Be: the speed change elastic element is speed change disc spring, and the speed change disc spring is coated at main shaft and one end is supported by plane bearing
Firmly from dynamic friction piece, the plane bearing is the plane rolling bearing of radially double small ball;
It is equipped with drive sleeve with the transmission cooperation of first freewheel clutch outer ring, the drive sleeve is used to match with rotor transmission
It closes or integrally formed input power, and axially extending formation axle journal is rotatably assorted and is supported in cabinet, the active friction part, driven
Friction member and speed change disc spring are respectively positioned in the cavity between drive sleeve and main shaft.
9. the mechanical double overdrive clutch self-adapting automatic gear shift device of planetary system output according to claim 2, feature
Be: second freewheel clutch and reverse gear mechanism pass through third axial cam adjutant's power and are transferred to the second axial cam
It is secondary to being transferred to from dynamic friction piece, the third axial cam pair is coated at the second cam sleeve of main shaft by being rotatably assorted
Edge cam is cooperatively formed from the edge cam of one end of dynamic friction piece backwards with cam sleeve;
It is driven cooperation with first freewheel clutch outer ring and is rotatably assorted and be coated at cam sleeve or the second camshaft is arranged
There is intermediate driving gear, the countershaft gearing is equipped with the intermediate driven gear with intermediate driving gear transmission cooperation;
Outer end extends to form the axle sleeve that transmission cooperation is coated at main shaft, axle sleeve rotation to the second freewheel clutch inner ring in the axial direction
Cooperation is supported in mission case, and the other end and the transmission of the second cam sleeve cooperate;
Outer ring axial direction one end of first freewheel clutch and intermediate driving gear transmission cooperate, and the other end is fixedly connected on biography
Dynamic set, the main shaft power output end, which is passed through and is rotatably assorted, is supported in mission case.
10. the mechanical double overdrive clutch self-adapting automatic gear shift device of planetary system output according to claim 2, feature
Be: the sleeve outer circle of first freewheel clutch is rotatably assorted by the first rolling bearing is supported in mission case;
Second cam sleeve is rotatably assorted by the second rolling bearing and is supported in mission case, and second rolling bearing is located at reverse gear
Between driven gear and intermediate driving gear, the intermediate driving gear axially extends to form axle journal, and the axle journal also passes through the
Five rolling bearings, which are rotatably assorted, is supported in cabinet, passes through the first plane axis between the intermediate driving gear and the second rolling bearing
It holds and is rotatably assorted;The drive sleeve inner circle is rotatably assorted by the 4th rolling bearing is supported in main shaft;
The power output shaft is integrally formed equipped with transmission wheel disc, and the planet carrier is in circumferencial direction and the fixed company of transmission wheel disc
It connects, the driving wheel dish axle forms axle bed to recess, and main shaft coaxial transmission fits through the sun gear and the support that is rotatably assorted
In the axle bed.
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CN201910314882.1A CN110030342B (en) | 2019-04-18 | 2019-04-18 | Mechanical double-overrunning clutch self-adaptive automatic transmission with planetary system output |
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CN110939699A (en) * | 2019-12-04 | 2020-03-31 | 西南大学 | Mechanical self-adaptive automatic transmission adopting multi-piece type large-torque friction clutch |
CN110966362A (en) * | 2019-12-04 | 2020-04-07 | 西南大学 | Full-mechanical self-adaptive automatic transmission with reverse gear function |
CN111005991A (en) * | 2019-12-04 | 2020-04-14 | 西南大学 | Double-overrunning self-adaptive automatic speed changing system adopting multi-plate friction clutch |
CN111016645A (en) * | 2019-12-04 | 2020-04-17 | 西南大学 | Two surpassing integrated form wisdom self-adaptation electric drive rear-guard system of super large moment of torsion double helix |
CN112901730A (en) * | 2019-12-04 | 2021-06-04 | 西南大学 | Transaxle for an adaptive automatic transmission electric drive system |
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