CN102748434A - Double-planetary-gear two-gear speed reducer - Google Patents
Double-planetary-gear two-gear speed reducer Download PDFInfo
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- CN102748434A CN102748434A CN2012102528075A CN201210252807A CN102748434A CN 102748434 A CN102748434 A CN 102748434A CN 2012102528075 A CN2012102528075 A CN 2012102528075A CN 201210252807 A CN201210252807 A CN 201210252807A CN 102748434 A CN102748434 A CN 102748434A
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Abstract
The invention relates to a double-planetary-gear two-gear speed reducer. Transmission is achieved by two planetary gears, a primary gear ring in a primary planetary gear mechanism is fixed, a primary sun gear is used for input while a primary planetary carrier is used for output, a secondary planetary carrier of a secondary planetary gear mechanism is connected with the primary planetary carrier, serves as input of the secondary planetary gear mechanism and is used for fixing a secondary gear ring of the secondary planetary gear mechanism or enables the secondary gear ring to be connected with a secondary sun gear so that output with two different reduction ratios is obtained, and a middle gear when each part is unfixed is a neutral gear. By the aid of the two reasonable large reduction ratios, the speed reducer is more compact in structure, climbing in low gear and acceleration in high gear are achieved, operation of a motor can be kept in an efficient region, and the double-planetary-gear two-gear speed reducer has the advantages of small size, light weight, compact structure, large bearing capacity, stable movement, high impact resistance and vibration resistance, low power loss, energy saving and safety.
Description
Technical field
The invention belongs to the technical field of new-energy automobile variable speed drive; Especially use the gear shift control technical field of pure electric automobile, serial type hybrid automobile and the externally rechargeable type mixed power automobile of electric drive system, be specifically related to two grades of speed reducer of a kind of duplicate rows star.
Background technique
On orthodox car, for adapting to the performance characteristic of motor, satisfy the usage requirement of automobile, adopted multi-speed gear box.Existing traditional multi-speed transmission basically all is single jack shaft or two jack shaft structure, from an input, is transferred to output shaft through jack shaft.
Electric vehicle be novel, can energy-saving and environmental protection, the waste gas zero-emission vehicle, environmental protection is all being paid attention in the whole world, this product belongs to environment-friendly products, has huge development potentiality and wide application prospect aspect human survival and the utilization of resources protection.Electric vehicle uses motor to replace the motor of orthodox car.Motor can be with to carry and start, and satisfies the automobile usage requirement through reasonable configuration, with motor very big difference has been arranged.Obviously in electric motor car, still use existing multi-speed transmission improper; But if cancellation variable speed drive; Requirement such as then be difficult to take into account automobile climbing and run at high speed; Particularly small and medium-sized car such as car, the bus etc. of going sightseeing, is necessary to design the electric automobile gear transmission device again to the performance characteristic of motor.When this drive form was realized self shifter, the cancellation clutch can reduce design, manufacturing and the user cost of Clutch Control, thereby the overall cost of system also further reduces.
Electric motor car at present adopts the directly driving type reducer arrangement of no gear basically, has given motor with the work of speed change.According to characteristic curve analysis to motor; This structure is difficult to make machine operation in high efficiency range; The disadvantage that causes is that climbing is unable, inrush current big, the low speed electric current is big, high speed does not add, power consumption is excessive, even can damage storage battery, motor, controller etc.
Summary of the invention
In order to overcome the above-mentioned shortcoming of existing technology
,The present invention provides a kind of and has that volume is little, light weight, compact structure, bearing capacity is big, transmission efficiency is high, velocity ratio is big, motion steadily, two grades of speed reducer of duplicate rows star of advantage such as shock resistance and vibration ability be strong.
The technical solution adopted for the present invention to solve the technical problems is: two grades of speed reducer of a kind of duplicate rows star; It realizes transmission through two groups of planetary pinions; First order planetary gears comprises one-level sun gear, one-level planet wheel and primary annulus; Primary annulus is fixed, by the input of one-level sun gear, and primary planet carrier output; Second level planetary gears comprises secondary sun gear, secondary planet wheel and secondary gear ring; The second level planet carrier of second level planetary gears links to each other with first order planet carrier; While is as the input of second level planetary gears; The fixing secondary gear ring of second level planetary gears or make the secondary gear ring and the secondary sun gear links together just obtains two kinds of different reduction speed ratio outputs respectively, when above-mentioned each parts not the middle bay fixedly the time be neutral.
The power of car load drive motor is by the input of one-level sun gear, and when elected shelves slide block was arranged in bay, this planet speed reducer was a neutral; During engage a gear, fix left by the secondary gear ring of second level planetary mechanism for elected shelves slide block, and this planet speed reducer is positioned at high-grade position, and gear ratio is the gear ratio product of two-stage planet device, and second level planetary mechanism has been the raising speed effect at this moment; Elected shelves slide block is to the right during engage a gear; This planet speed reducer is positioned at low gear position; The secondary gear ring of second level planetary mechanism and secondary sun gear be linked together, do not play chronotropic action, this moment, the output speed ratio of two grades of planetary reduction gears was the speed ratio of first order planet carrier output.
Said primary annulus is fixed on the two ends of one-level planet wheel shaft.
The invention has the beneficial effects as follows: the present invention is through the big retarding ratio of two reasonable set
,Drive motor-speed changer is integrated, proposed a kind of electric vehicle integral system and controlling method, cancelled clutch, originally with regard to hard up compact car chassis, the cancellation of clutch is that valuable space has been striven on the chassis in the space.
Concrete beneficial effect division is following:
First; The general coupling of conventional engines be multi-speed transmission, and to cooperate with clutch device and shift gears, be inappropriate if on electric vehicle, still adopt this scheme; Because the characteristics that drive motor is easy to control can reduce the gear of speed changer; General two grades or the enough satisfied use of third gear, and can cancel clutch control, make speed changer structure compacter.
Second; See from structure; What the present invention adopted is the structure of double-planet wheel type; With respect to the gearbox of traditional single jack shaft with two jack shafts, advantages such as the present invention has that volume is little, quality is little, compact structure, bearing capacity is big, transmission efficiency is high, velocity ratio is big, motion is steady, shock resistance and vibration ability are strong; Under the situation that the input and output condition is confirmed, can accomplish forr a short time than traditional gearbox volume, weight is lighter, the carrying capacity that more helps improving middle-size and small-size car with optimize the chassis spatial arrangement; And the input and output of planetary reduction gear are coaxial configuration, have saved middle speed change link, thereby no matter are can both reduce difficulty from processing or assembling link to improve precision; In addition, can only export direct high and a reduction gear with respect to the single file star-wheel, the two groups of adjustings of planet wheel speed reducer aspect speed ratio are wider; At top gear, not only can make direct high, can also be matched to raising speed shelves or reduction gear through the speed ratio difference of gear for two stage planetary gear train; At bottom gear, it is bigger than the regulation range of single file star-wheel gearbox; Increase a neutral than single file star wheel series gearbox exactly in addition, can effectively satisfy the requirement of going of the different purposes automobiles in city.
The 3rd, electric motor car at present adopts the directly driving type reducer arrangement of no gear basically, and the task of speed change has been given motor; The motor movement effect not between optimal zone in operation, cause car load climbing unable, inrush current is big; The low speed electric current is big; Do not add at a high speed, power consumption is excessive, even can damage storage battery, motor, controller etc.; But adopt two grades of planetary reduction gears to climb by bottom gear, top gear quickens, and can make the running of motor remain on high efficiency range work, reduces electric energy loss, however energy-conserving action, and Safety performance is good.
The 4th, automatic transmission case only has motor and gear device (not having motor), and noise is very little, has cancelled mobile muffler commonly used; Make electric motor car become the zero-emission environment-friendly vehicle, be suitable for very much population and live intensive metropolitan district with car (bus, public security vehicle, ambulance; School bus, tour bus, Clean-car, car is used in meeting; Commercial car), automatic transmission case has deducted the operation of driver's buty shifting, makes that the driver can concentrate one's energy to drive more, has embodied the design concept that people-oriented.
The 5th, develop electric motor car increase solar energy equipment forward and both can become solar powered auto, have a extensive future.
Description of drawings
Fig. 1 is power-transmission system figure of the present invention.
Among the figure: 1 is the one-level sun gear, and 2 is the one-level planet wheel, and 3 is primary annulus, and 4 is the firsts and seconds planet carrier, and 5 is the secondary gear ring, and 6 are choosing shelves slide block, and 7 is the secondary sun gear, and 8 are the secondary planet wheel.
Embodiment
Below in conjunction with accompanying drawing and embodiment the present invention is further specified.
Referring to Fig. 1; Two grades of speed reducer of a kind of duplicate rows star, it realizes transmission through two groups of planetary pinions, first order planetary gears comprises one-level sun gear 1, one-level planet wheel 2 and primary annulus 3; Primary annulus 3 is fixed; Primary annulus 3 is fixed on the two ends of 2 of one-level planet wheels, by 1 input of one-level sun gear, primary planet carrier output; Second level planetary gears comprises secondary sun gear 7, secondary planet wheel 8 and secondary gear ring 5; The second level planet carrier of second level planetary gears links to each other with first order planet carrier; While is as the input of second level planetary gears; The fixing secondary gear ring 5 of second level planetary gears or secondary gear ring 5 and secondary sun gear 7 are linked together just obtains two kinds of different reduction speed ratio outputs respectively; When above-mentioned each parts not the middle bay fixedly the time be neutral.
The power of car load drive motor is by 1 input of one-level sun gear, and when elected shelves slide block 6 was arranged in bay, this planet speed reducer was a neutral; During engage a gear, the secondary gear ring 5 of second level planetary mechanism is fixing left for elected shelves slide block 6, and this planet speed reducer is positioned at high-grade position, and gear ratio is the gear ratio product of two-stage planet device, and second level planetary mechanism has been the raising speed effect at this moment; Elected shelves slide block 6 is to the right during engage a gear; This planet speed reducer is positioned at low gear position; The secondary gear ring 5 of second level planetary mechanism and secondary sun gear 7 be linked together, do not play chronotropic action, this moment, the output speed ratio of two grades of planetary reduction gears was the speed ratio of first order planet carrier output.
The present invention can satisfy the needs that on electric vehicle, use; Because the characteristics that the drive motor of electric vehicle is easy to control can reduce the gear of speed changer; General two grades or the enough satisfied use of third gear, and can cancel clutch control, make speed changer structure compacter; See from structure simultaneously; What the present invention adopted is the structure of double-planet wheel type; With respect to the gearbox of traditional single jack shaft and two jack shafts have that volume is little, quality is little, compact structure, bearing capacity is big, transmission efficiency is high, velocity ratio is big, motion steadily, advantage such as shock resistance and vibration ability be strong; Under the situation that the input and output condition is confirmed, can accomplish forr a short time than traditional gearbox volume, weight is lighter, the carrying capacity that more helps improving middle-size and small-size car with optimize the chassis spatial arrangement; And the input and output of planetary reduction gear are coaxial configuration, have saved middle speed change link, no matter are from processing or the assembling link can both reduce difficulty and improve precision.In addition, can only export direct high and a reduction gear with respect to the single file star-wheel, the two groups of adjustings of planet wheel speed reducer aspect speed ratio are wider; At top gear, not only can make direct high, can also be matched to raising speed shelves or reduction gear through the speed ratio difference of gear for two stage planetary gear train; At bottom gear, it is bigger than the regulation range of single file star-wheel gearbox; Increase a neutral than single file star wheel series gearbox exactly in addition, can effectively satisfy the requirement of going of the different purposes automobiles in city.
Electric motor car at present adopts the directly driving type reducer arrangement of no gear basically, and the task of speed change has been given motor, and the motor movement effect is moved in not between optimal zone; Cause the car load climbing unable; Inrush current is big, and the low speed electric current is big, does not add at a high speed; Power consumption is excessive, even can damage storage battery, motor, controller etc.; But adopt the present invention to climb by bottom gear, top gear quickens, and can make the running of motor remain on high efficiency range work, reduces electric energy loss, however energy-conserving action, and Safety performance is good.Automatic transmission case only has motor and gear device (not having motor), and noise is very little, and cancellation mobile muffler commonly used makes electric motor car become the zero-emission environment-friendly vehicle; Be suitable for very much population and live intensive metropolitan district with car (bus, public security vehicle, ambulance, school bus; Tour bus, Clean-car, car is used in meeting, commercial car); Automatic transmission case has been saved driver's buty shifting operation, makes driver's safe driving of concentrating one's energy more, has embodied the theory that people-oriented.Along with development of science and technology, electric motor car increases the solar energy equipment both can become solar powered auto, had a extensive future.
Claims (3)
1. two grades of speed reducer of a duplicate rows star; It is characterized in that: it realizes transmission through two groups of planetary pinions, and first order planetary gears comprises one-level sun gear, one-level planet wheel and primary annulus, and primary annulus is fixed; By the input of one-level sun gear, primary planet carrier output; Second level planetary gears comprises secondary sun gear, secondary planet wheel and secondary gear ring; The second level planet carrier of second level planetary gears links to each other with first order planet carrier; While is as the input of second level planetary gears; The fixing secondary gear ring of second level planetary gears or make the secondary gear ring and the secondary sun gear links together just obtains two kinds of different reduction speed ratio outputs respectively, when above-mentioned each parts not the middle bay fixedly the time be neutral.
2. two grades of speed reducer of duplicate rows star according to claim 1, it is characterized in that: the power of car load drive motor is by the input of one-level sun gear, and when an elected shelves slide block was arranged in bay, this planet speed reducer was a neutral; During engage a gear, fix left by the secondary gear ring of second level planetary mechanism for elected shelves slide block, and this planet speed reducer is positioned at high-grade position, and gear ratio is the gear ratio product of two-stage planet device, and second level planetary mechanism has been the raising speed effect at this moment; Elected shelves slide block is to the right during engage a gear; This planet speed reducer is positioned at low gear position; The secondary gear ring of second level planetary mechanism and secondary sun gear be linked together, do not play chronotropic action, this moment, the output speed ratio of two grades of planetary reduction gears was the speed ratio of first order planet carrier output.
3. two grades of speed reducer of duplicate rows star according to claim 1, it is characterized in that: said primary annulus is fixed on the two ends of one-level planet wheel shaft.
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| Application Number | Priority Date | Filing Date | Title |
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| CN2012102528075A CN102748434A (en) | 2012-07-20 | 2012-07-20 | Double-planetary-gear two-gear speed reducer |
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| CN2012102528075A CN102748434A (en) | 2012-07-20 | 2012-07-20 | Double-planetary-gear two-gear speed reducer |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107345558A (en) * | 2016-05-06 | 2017-11-14 | 陕西汉德车桥有限公司 | Pure electronic two grades of transaxles and electric car |
| CN107448561A (en) * | 2017-09-04 | 2017-12-08 | 杭州前进齿轮箱集团股份有限公司 | A kind of two grades of high speed difference speed changers |
| CN108331703A (en) * | 2018-02-05 | 2018-07-27 | 佛山科学技术学院 | A kind of compact controllable power generation device from sea current |
| CN110242714A (en) * | 2019-06-18 | 2019-09-17 | 北京航空航天大学 | A kind of two-level decelerating motor |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH11247950A (en) * | 1998-02-27 | 1999-09-14 | Hochiki Corp | Reduction gear |
| CN1280078A (en) * | 1999-07-08 | 2001-01-17 | 现代自动车株式会社 | Gear driving system of automatic driving device |
| CN2661479Y (en) * | 2003-04-24 | 2004-12-08 | 北京理工大学 | Single planet row two-gear transmission case for electric automobile |
| CN200952551Y (en) * | 2006-09-22 | 2007-09-26 | 李云峰 | Combined dual-shift clutch |
| CN101454595A (en) * | 2006-05-25 | 2009-06-10 | 通用汽车环球科技运作公司 | Two-planetary electrically variable transmissions with multiple fixed ratios |
| CN102162505A (en) * | 2011-04-27 | 2011-08-24 | 北京理工华创电动车技术有限公司 | Planet gear type automatic speed change system for electric automobile |
-
2012
- 2012-07-20 CN CN2012102528075A patent/CN102748434A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH11247950A (en) * | 1998-02-27 | 1999-09-14 | Hochiki Corp | Reduction gear |
| CN1280078A (en) * | 1999-07-08 | 2001-01-17 | 现代自动车株式会社 | Gear driving system of automatic driving device |
| CN2661479Y (en) * | 2003-04-24 | 2004-12-08 | 北京理工大学 | Single planet row two-gear transmission case for electric automobile |
| CN101454595A (en) * | 2006-05-25 | 2009-06-10 | 通用汽车环球科技运作公司 | Two-planetary electrically variable transmissions with multiple fixed ratios |
| CN200952551Y (en) * | 2006-09-22 | 2007-09-26 | 李云峰 | Combined dual-shift clutch |
| CN102162505A (en) * | 2011-04-27 | 2011-08-24 | 北京理工华创电动车技术有限公司 | Planet gear type automatic speed change system for electric automobile |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107345558A (en) * | 2016-05-06 | 2017-11-14 | 陕西汉德车桥有限公司 | Pure electronic two grades of transaxles and electric car |
| CN107448561A (en) * | 2017-09-04 | 2017-12-08 | 杭州前进齿轮箱集团股份有限公司 | A kind of two grades of high speed difference speed changers |
| CN107448561B (en) * | 2017-09-04 | 2019-08-30 | 杭州前进齿轮箱集团股份有限公司 | A kind of two grades of high speed difference speed changers |
| CN108331703A (en) * | 2018-02-05 | 2018-07-27 | 佛山科学技术学院 | A kind of compact controllable power generation device from sea current |
| CN110242714A (en) * | 2019-06-18 | 2019-09-17 | 北京航空航天大学 | A kind of two-level decelerating motor |
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Application publication date: 20121024 |