CN203926644U - A kind of electrically driven (operated) planetary transmission - Google Patents
A kind of electrically driven (operated) planetary transmission Download PDFInfo
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- CN203926644U CN203926644U CN201420217252.5U CN201420217252U CN203926644U CN 203926644 U CN203926644 U CN 203926644U CN 201420217252 U CN201420217252 U CN 201420217252U CN 203926644 U CN203926644 U CN 203926644U
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- planetary
- transmission
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- compound planetary
- row
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Abstract
A kind of electrically driven (operated) planetary transmission, it has comprised housing, input link, output link, Simpson compound planetary row, two torque transmitters and four interconnecting components; Centered by Simpson compound planetary row, the input link that left is transmission system, right-hand is the output link of power train, and two torque transmitters are break, and near housing, above-mentioned each member is all positioned at housing side by side; The utlity model has simple in structure closely, high, the good manufacturability of transmission efficiency, the series of advantages such as manufacturing expense is low, gear shift is steady, manoeuvring performance is good, be used in and in electric motor car, carried out transmission work, not only save space, and transmission efficiency is high, meet machine operation characteristic, can make drive characteristic better.
Description
Technical field
The utility model provides a kind of electrically driven (operated) planetary transmission, and it is a kind of epicyclic transmission of two gears, belongs to electric vehicle automatic transmission technical field.
Background technique
Growing along with electric vehicle, more and more higher for the requirement of transmission system performance.Because traditional fixed drive ratio speed changer requires high and can not take into account Economy and power character drive motor, so Development of EV multi-speed automatic transmission has become irresistible trend.Because epicyclic transmission has big speed ratio, volume is little, bearing capacity is large, stable working, therefore be widely used in automatic transmission.Therefore, the design of the arrangement of planet row becomes the primary prerequisite of automatic transmission exploitation.
Patent CN203098765U discloses a kind of arrangement that comprises the two groups of planetary gear set in front and back.In scheme, front sun gear is connected with motor output shaft, and the coaxial and rear sun gear of former and later two sun gears is fixed, and rear expert's star-wheel engages with rear sun gear and rear layman's star-wheel, and finally power is exported by rear gear ring.Two clutches are arranged on the gear ring on the planet carrier between front planet carrier and rear expert's star-wheel and between front ring gear and rear layman's star-wheel.Two breaks are respectively used to lock front ring gear and the front planet carrier of locking.
The disclosed scheme of patent CN202872557U comprises two single 2K-H planetary transmission systems, and the realization of primary speed-down is to rely on front-seat planetary transmission system, and front-seat gear ring is fixed, and power be passed to front-seat planet carrier output from front-seat sun gear.Two gears are completed by rear rows of planetary gear train assembly, the combination of row sun gear and rear rows of planetary frame or separate after clutch C1 realizes, and break B1 realizes rear ring gear with the fixing of casing and separates, finally by rear rows of planetary frame outputting power.
The open scheme of patent CN201795003U is as follows: input shaft drives planet carrier by first clutch, and drives sun gear by second clutch, the output shaft of one termination motor.Meanwhile, output gear and planet carrier are coaxially affixed, and it drives the driving gear of differential mechanism by jack shaft, and gear ring is affixed with gearbox case.
Electric car automatic speed transmission technology starts to walk soon, but volume is little, compact structure and improve the feature such as electric efficiency and make its birth have necessity.Can find out from current research, the planet row arrangement of electric vehicle two-shift automatic speed variator also has very large research space.
Model utility content
(1) object
The purpose of this utility model is to provide a kind of electrically driven (operated) planetary transmission, and it has overcome the deficiencies in the prior art, is a kind of compact structure, is convenient to two shift transmissions that electro-motive vehicle travels.
(2) technological scheme
The utility model is a kind of electrically driven (operated) planetary transmission, and it has comprised housing, input link, output link, Simpson compound planetary row, two torque transmitters, four interconnecting components.Wherein, the position relationship between them is: centered by Simpson compound planetary row, and the input link that left is transmission system, right-hand is the output link of power train, two torque transmitters are break, side by side near housing.Above-mentioned each member is all positioned at housing.
Described housing is the shell of planetary transmission, is fixed, and for holding and support other members of speed changer, its shape and structure, because layout determines, does not exist fixed form.
Described input link is the input shaft of planetary transmission, by this axle, the output speed of motor and torque is input to planetary transmission, and input link is unique, in Simpson compound planetary row front.
Described output link is the output shaft of planetary transmission, by this axle, the rotating speed of planetary transmission and moment of torsion is exported to follow-up transmission shaft, and output link is unique, in Simpson compound planetary row rear.
Described Simpson compound planetary row is a kind of planetary gears of combined type, by a sun gear assembly, and a front-seat planet carrier, a front-seat gear ring and rear rows of planetary frame, a rear ring gear and forward and backward rows of planetary wheel composition; Sun gear assembly engages with front-seat and rear seniority among brothers and sisters star-wheel respectively, and front-seat gear ring engages with front-seat planet wheel, and rear ring gear engages with rear seniority among brothers and sisters star-wheel, and front-seat gear ring and rear rows of planetary frame connect firmly.
Described the first interconnecting component is coupling shaft, and this axle is fixed together Simpson compound planetary row's sun gear assembly and input shaft.
Described the second interconnecting component is coupling shaft, and this axle is fixed together Simpson compound planetary row's rear ring gear and output shaft.
Described the 3rd interconnecting component is coupling shaft, and this interconnecting component is fixedly connected with rear rows of planetary frame Simpson compound planetary row's front-seat gear ring with the first torque transmitter.
Described the 4th interconnecting component is coupling shaft, and this interconnecting component is fixedly connected with Simpson compound planetary row's front-seat planet carrier with the second torque transmitter.
Two described torque transmitters are all wet friction joint element, by the joint of different torque transmitters, two members of correspondence are linked together.Two optionally lockings of torque transmitter, by certain two temporary coupling together of member.
This optionally locking of the first torque transmitter, the front-seat gear ring that Simpson compound planetary is arranged and rear rows of planetary frame and housing couple together.
This optionally locking of the second torque transmitter, couples together Simpson compound planetary row's front-seat planet carrier and housing.
Wherein, the transmission scheme relating in the utility model produces two forward gears by controlling two torque transmitters, realizes automatic transmission function.
Wherein, above-mentioned Simpson compound planetary row is made up of two simple negative sign planet rows, shares a sun gear assembly, and wherein front-seat gear ring connects firmly into an assembly with rear rows of planetary frame; In above-mentioned Simpson compound planetary row, related gear is all helical teeth profile of tooth.
Wherein, the first, the second torque transmitter is wet friction chip break.The size dimension of break, need to calculate and obtain according to mated motor output torque, and the utility model does not limit concrete applicable model and specification.
Structural principle of the present utility model and the brief introduction of work overview are as follows: when all torque transmitters are in separated state, this planetary gears degrees of freedom is 2, between input link and output link, there is no transmission of power; When the first torque transmitter is during in blocking, Simpson compound planetary row's front-seat gear ring and rear rows of planetary frame component are fixed, this planetary gears degrees of freedom reduces to 1, between input output member, have transmission of power, the ratio of input link and output link rotating speed is a gear velocity ratio.
When the second torque transmitter is during in blocking, Simpson compound planetary row's front-seat planet carrier is fixed, this planetary gears degrees of freedom reduces to 1, between input output member, has transmission of power, and the ratio of input link and output link rotating speed is two gear velocity ratios.
(3) advantage
Simpson have simple in structure closely, high, the good manufacturability of transmission efficiency, the series of advantages such as manufacturing expense is low, gear shift is steady, manoeuvring performance is good.Be used in electric motor car and carry out transmission work, not only save space, and transmission efficiency is high, meet machine operation characteristic, can make drive characteristic better.
Brief description of the drawings
Fig. 1 is the embodiment structural representation according to electric drive planetary transmission of the present utility model;
Reference character
0 housing; 1 first interconnecting component; 2 second interconnecting components; 3 the 3rd interconnecting components; 4 the 4th interconnecting components;
Sun gear before S1; S2 rear sun gear; The front-seat gear ring of R1; R2 rear ring gear;
The front-seat planet carrier of A1; Rows of planetary frame after A2; The front-seat planet wheel of G1; After G2, rank star-wheel;
The front-seat negative sign planet row of P1; After P2, arrange negative sign planet row; IN input shaft; OUT output shaft;
B1 the first torque transmitter; B2 the second torque transmitter.
Embodiment:
In following illustrative in nature only for exemplary and be not intended to limit absolutely application of the present utility model or use.
A kind of electrically driven (operated) planetary transmission of the utility model, it is a kind of two gear electrically driven speed change devices of planetary gear construction, it has comprised housing 0; Input link is input shaft IN; Output link is output shaft OUT; Simpson compound planetary row; The first interconnecting component 1; The second interconnecting component 2; The 3rd interconnecting component 3; The 4th interconnecting component 4; The first torque transmitter B1; The second torque transmitter B2.Relation between them is: centered by Simpson compound planetary row, and the input link that left is transmission system, right-hand is the output link of power train, and two torque transmitters are break, and near housing 0, above-mentioned each member is all positioned at housing 0 side by side.
Housing 0 is according to the decision of concrete engineering mode of execution, and major function is to support every member of this invention.
First, of the present utility model two mode of executions that keep off electrically driven speed change devices have permanent mechanical connection setting on Simpson compound planetary row.
First, with reference to figure 1, this speed changer comprises input shaft IN, Simpson compound planetary row, housing 0, output shaft OUT, the first torque transmitter B1, the second torque transmitter B2, the first interconnecting component 1, the second interconnecting component 2, the three interconnecting component 3, the four interconnecting components 4, in mode of execution of the present utility model, row is as described below for Simpson compound planetary.
Simpson compound planetary row be made up of front-seat negative sign planet row P1 and rear row's negative sign planet row P2, and it has comprised forward and backward sun gear S1, S2, forward and backward seniority among brothers and sisters star-wheel G1, G2, forward and backward toothrow circle R1, R2, forward and backward rows of planetary frame A1, A2.Forward and backward sun gear S1, S2 are fixedly connected with input shaft IN by the first interconnecting component 1; Rear ring gear R2 is fixedly connected with output shaft OUT by the second interconnecting component 2; Front-seat gear ring R1 and rear rows of planetary frame A2 are fixedly linked by the 3rd interconnecting component and the first torque transmitter B1; Front-seat planet carrier A1 is fixedly linked by the 4th interconnecting component and the second torque transmitter B2.
The first torque transmitter B1 is optionally connected Simpson compound planetary row's front-seat gear ring R1 with case of transmission 0 with rear rows of planetary frame A2.The second torque transmitter B2 optionally connects Simpson compound planetary row's front-seat planet carrier A1 with case of transmission 0.
Input shaft IN is directly connected to motor (not shown).Output shaft OUT is connected to the final (not shown) such as gear unit or transfer case.
The gear shift operation of first shifting gears logic diagram and respectively keeping off velocity ratio and illustrate this mode of execution with reference to rear list one.This speed changer can be delivered to output shaft OUT by moment of torsion from input shaft IN with two forward gear speed ratios or torque ratio.By the some combinations in torque transmitter (shifting element), can obtain velocity ratio or the torque ratio of each forward gear.Table one shows the combination truth table that is activated or engages the torque-transmitting mechanisms of realizing shifting state.As shown in table one, "×" has represented that this concrete torque transmitter (shifting element) is engaged to realize expectation shifting state.Wherein Simpson compound planetary row can regard as by front sun gear S1, front-seat planetary pinion G1, front-seat gear ring R1, the negative sign planetary gear set that planet carrier A1 composition fixed drive ratio is-3.68 and by rear sun gear S2, rear rows of planetary gear G2, the negative sign planetary gear set that rear rows of planetary frame A2 and rear ring gear R2 composition velocity ratio are-3.45 forms jointly, tries to achieve the gear ratio value of the each gear of speed changer shown in table one.
Operation to two shift transmissions and the above stated specification of shifting state hypothesis: first, be that all shifting elements of specifically mentioning all depart from given shifting state; Secondly,, during the gearshift between adjacent shifting state (changing shifting state), the shifting element all engaging under two shifting state will keep jointing state.
Of the present utility modelly say that face is only exemplary in essence, and do not depart from the distortion that the utility model makes it and be intended to be included in scope of the present utility model.This modification is considered to not depart from spirit and scope of the present utility model.
Transmission scheme gear ratio calculation method is as follows:
One gear gear ratio calculation formula: i1=i01
Two gear gear ratio calculation formula i2=-i01*i02/ (1-i01-i02)
In formula, symbol description is as follows:
I1 mono-keeps off velocity ratio
I2 bis-keeps off velocity ratio
The equivalent front-seat negative sign planetary gear set fixed drive ratio of i01 Simpson compound planetary row
Row's negative sign planetary gear set fixed drive ratio after i02 Simpson compound planetary row equivalence
Table one
| B1 | B2 | Velocity ratio | |
| 1 | X | -3.68 | |
| 2 | X | -1.56 |
Claims (4)
1. an electrically driven (operated) planetary transmission, is characterized in that: it has comprised housing, input link, output link, Simpson compound planetary row, two torque transmitters and four interconnecting components; Centered by Simpson compound planetary row, the input link that left is transmission system, right-hand is the output link of power train, and two torque transmitters are break, and near housing, above-mentioned each member is all positioned at housing side by side;
Described housing is the shell of planetary transmission, maintains static, and holds and support other members of speed changer, and its shape and structure is determined because of layout;
Described input link is the input shaft of planetary transmission, and it is in Simpson compound planetary row front;
Described output link is the output shaft of planetary transmission, and it is in Simpson compound planetary row rear;
Described Simpson compound planetary row is a kind of planetary gears of combined type, by a sun gear assembly, and a front-seat planet carrier, a front-seat gear ring and rear rows of planetary frame, a rear ring gear and forward and backward rows of planetary wheel composition; Sun gear assembly engages with front-seat and rear seniority among brothers and sisters star-wheel respectively, and front-seat gear ring engages with front-seat planet wheel, and rear ring gear engages with rear seniority among brothers and sisters star-wheel, and front-seat gear ring and rear rows of planetary frame connect firmly;
The first interconnecting component is coupling shaft, and this axle is fixed together Simpson compound planetary row's sun gear assembly and input shaft;
The second interconnecting component is coupling shaft, and this axle is fixed together Simpson compound planetary row's rear ring gear and output shaft;
The 3rd interconnecting component is coupling shaft, and this interconnecting component is fixedly connected with rear rows of planetary frame Simpson compound planetary row's front-seat gear ring with the first torque transmitter;
The 4th interconnecting component is coupling shaft, and this interconnecting component is fixedly connected with Simpson compound planetary row's front-seat planet carrier with the second torque transmitter;
Two described torque transmitters are all wet friction joint element, this optionally locking of the first torque transmitter, and the front-seat gear ring that Simpson compound planetary is arranged and rear rows of planetary frame and housing couple together; This optionally locking of the second torque transmitter, couples together Simpson compound planetary row's front-seat planet carrier and housing.
2. the electrically driven (operated) planetary transmission of one according to claim 1, it is characterized in that: this Simpson compound planetary row be made up of two negative sign planet rows, share a sun gear assembly, wherein front-seat gear ring connects firmly into an assembly with rear rows of planetary frame; In Simpson compound planetary row, related gear is all helical teeth profile of tooth.
3. the electrically driven (operated) planetary transmission of one according to claim 1, is characterized in that: the first, the second torque transmitter is wet friction chip break, and the size dimension of break calculates and obtains according to mated motor output torque.
4. the electrically driven (operated) planetary transmission of one according to claim 1, is characterized in that: this transmission scheme produces two forward gears by controlling two torque transmitters, realizes automatic transmission function.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420217252.5U CN203926644U (en) | 2014-04-30 | 2014-04-30 | A kind of electrically driven (operated) planetary transmission |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420217252.5U CN203926644U (en) | 2014-04-30 | 2014-04-30 | A kind of electrically driven (operated) planetary transmission |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203926644U true CN203926644U (en) | 2014-11-05 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420217252.5U Expired - Fee Related CN203926644U (en) | 2014-04-30 | 2014-04-30 | A kind of electrically driven (operated) planetary transmission |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203926644U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2020103451A1 (en) * | 2018-11-21 | 2020-05-28 | 南京越博电驱动***有限公司 | Dual-motor power driving device and torque distribution control method therefor |
| CN111396516A (en) * | 2020-06-02 | 2020-07-10 | 北京航空航天大学 | Planetary gear speed change device for electric automobile |
-
2014
- 2014-04-30 CN CN201420217252.5U patent/CN203926644U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2020103451A1 (en) * | 2018-11-21 | 2020-05-28 | 南京越博电驱动***有限公司 | Dual-motor power driving device and torque distribution control method therefor |
| CN111396516A (en) * | 2020-06-02 | 2020-07-10 | 北京航空航天大学 | Planetary gear speed change device for electric automobile |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20141105 Termination date: 20170430 |