CN108223704B - Two-speed-ratio planetary gear speed change mechanism - Google Patents
Two-speed-ratio planetary gear speed change mechanism Download PDFInfo
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- CN108223704B CN108223704B CN201611185504.0A CN201611185504A CN108223704B CN 108223704 B CN108223704 B CN 108223704B CN 201611185504 A CN201611185504 A CN 201611185504A CN 108223704 B CN108223704 B CN 108223704B
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- gear
- shifting
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- selecting
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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
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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
- F16H2200/003—Transmissions for multiple ratios characterised by the number of forward speeds
- F16H2200/0034—Transmissions for multiple ratios characterised by the number of forward speeds the gear ratios comprising two forward speeds
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- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Structure Of Transmissions (AREA)
Abstract
The planetary gear set, the first gear selecting and shifting device, the second gear selecting and shifting device and the gear ring braking device are arranged on the frame, the planet carrier can be selected by the first gear selecting and shifting device to be connected with the input shaft or the frame to transmit torque, the output shaft can be selected by the second gear selecting and shifting device to be connected with the gear ring or the planet carrier to transmit torque, and the gear ring can be connected with the frame by the gear ring braking device to transmit torque or disconnected from the frame to transmit no torque.
Description
Technical Field
The invention relates to the technical field of automobile transmissions, in particular to a two-speed-ratio planetary gear speed change mechanism.
Background
In some application occasions, a power system is required to provide wide rotating speed and torque output, for example, an automobile with complex driving conditions needs a driving wheel with wide rotating speed and torque range to meet various driving conditions such as starting, accelerating, climbing, high-speed driving and the like, an automobile engine can only provide torque output with limited range in a narrow rotating speed range, and the requirement of the complicated and variable driving conditions of the automobile on the power with huge difference of the rotating speed and the torque can be met by adopting a transmission with a plurality of transmission ratios to expand the rotating speed and the torque range of output.
As important automobile parts, the automobile transmission needs to have the characteristics of compact structure, high transmission efficiency, reliable operation, long service life and the like, various automobile transmissions developed for automobiles using gasoline engines or diesel engines as engines are available, some automobile transmissions adopt a plurality of groups of planetary gear rows and hydraulic torque converters to realize a plurality of transmission ratios, some automobile transmissions adopt a plurality of gear pairs with different gear ratios to realize a plurality of transmission ratios, some automobile transmissions adopt the working radiuses of an input shaft belt wheel and an output shaft belt wheel to obtain the transmission ratio which can be changed in a certain transmission ratio interval, and the like.
Disclosure of Invention
The invention aims to provide a two-speed-ratio planetary gear speed change mechanism which is compact in structure, light in weight, high in transmission efficiency and reliable in operation.
In order to achieve the purpose, the invention adopts the technical scheme that: the two-speed-ratio planetary gear speed change mechanism comprises an input shaft, an output shaft and a rack, wherein the two-speed-ratio planetary gear speed change mechanism further comprises a planetary gear set, a first gear selecting and shifting device, a second gear selecting and shifting device and a gear ring braking device, the planetary gear set comprises a sun gear, a gear ring, a planet carrier and a plurality of planet gears, the planet carrier can be selected to be connected with the input shaft or the rack through the first gear selecting and shifting device to transmit torque, the output shaft can be selected to be connected with the gear ring or the planet carrier through the second gear selecting and shifting device to transmit torque, and the gear ring can be connected with the rack through the gear ring braking device to transmit torque or disconnected from.
In some embodiments, the input shaft and the sun gear are connected or combined into a same component, the first gear selecting and shifting device comprises a first gear selecting and shifting driving element connected with the input shaft, a first gear selecting and shifting driven element connected with the planet carrier, and a first gear selecting and shifting locking element connected with the frame, the first gear selecting and shifting driven element can be respectively connected with the first gear selecting and shifting driving element or the first gear selecting and shifting locking element to transmit torque, the second gear selecting and shifting device comprises a second gear selecting and shifting driving element connected with the planet carrier, the gear ring braking device comprises an inner ring connected with the gear ring of the planetary gear set and an outer ring connected with the rack, and the inner ring can be connected with or disconnected from the outer ring.
In some embodiments, the first gear selecting and shifting driven member may be coupled to neither the first gear selecting and shifting driving member nor the first gear selecting and shifting locking member, and the second gear selecting and shifting driven member may be coupled to neither the second gear selecting and shifting driving member nor the second gear selecting and shifting ring gear connecting member.
In some embodiments, the two-speed ratio planetary transmission mechanism may be used as a two-speed transmission having two forward speed ratios and one reverse speed ratio.
In some embodiments, the two-speed ratio planetary transmission mechanism may be combined with other transmission mechanisms into a multi-speed transmission having more transmission ratios.
The input shaft of the present invention is generally referred to as the motion and torque input member, but in some applications or conditions, the input shaft may also be used as the motion and torque output shaft.
The output shaft of the present invention is generally referred to as a motion and torque output member, but in some applications or conditions, the output shaft may also be used as a motion and torque input shaft.
The frame of the invention refers to a transmission shell or a bracket, a support and other components of a mechanism.
The gear selecting and shifting device is a mechanism or a device, such as a synchronizer, a clutch and the like, which can enable transmission parts to be connected in pairs according to the requirement of transmission connection relationship.
Advantageous effects
Through the description of the technical scheme, the two-speed-ratio planetary gear speed change mechanism provided by the invention can obtain at least one or all of the following beneficial effects:
the transmission mechanism has the advantages of compact structure, light weight, high transmission efficiency, reliable operation, long service life and the like;
the input shaft and the output shaft are on the same axis, and two forward speed ratios and one backward speed ratio can be obtained;
the speed changer not only can be used as a two-speed ratio speed changer, but also can be easily combined with other speed changing mechanisms so as to expand the speed changer with more speed changing ratios to meet more application requirements.
Drawings
The drawings described herein are for illustration purposes only and it should be understood that the description and specific examples are intended for purposes of illustration only and are not intended to limit the scope of the present disclosure.
In the drawings, like reference numerals refer to like elements, components or features consistently.
FIG. 1 is a two-ratio planetary transmission mechanism according to a preferred embodiment of the present invention.
FIG. 2 is a kinematic and torque transmission path of the first speed ratio of a two-ratio planetary transmission mechanism in accordance with a preferred embodiment of the present invention.
FIG. 3 is a kinematic and torque transmission path for the second speed ratio of a two-ratio planetary transmission in accordance with a preferred embodiment of the present invention.
FIG. 4 is a kinematic and torque transmission path for the reverse speed ratio of a two-ratio planetary transmission in accordance with a preferred embodiment of the present invention.
The description of the reference numerals,
001. according to the two-speed-ratio planetary gear transmission mechanism of the preferred embodiment of the present invention,
10. a machine frame, a plurality of guide rails and a plurality of guide rails,
11. an input shaft is arranged at the front end of the motor,
12. an output shaft is arranged on the output shaft,
20. a planetary gear set having a planetary gear set,
21. a sun wheel is arranged on the front side of the frame,
22. a gear ring is arranged on the gear ring,
23. a planet carrier is arranged on the upper surface of the planet carrier,
24. a planet wheel is arranged on the front end of the planet wheel,
30. the first gear selecting and shifting device is provided with a first gear selecting and shifting device,
31. a first gear selecting and shifting active part is arranged on the gear selecting and shifting active part,
32. the first gear selecting and shifting driven member is provided with a gear selecting and shifting driven member,
33. the first gear selecting and shifting locking piece is arranged on the gear selecting and shifting device,
40. the second gear selecting and shifting device is arranged on the front wheel,
41. the second gear selecting and shifting active part is arranged on the second gear selecting and shifting active part,
42. the second gear selecting and shifting driven member is provided with a gear selecting and shifting driven member,
43. a second gear selecting and shifting gear ring connecting piece,
50. a gear ring braking device is arranged on the gear ring braking device,
51. the inner ring of the gear ring braking device,
52. and an outer ring of the gear ring braking device.
Detailed Description
In order to make the technical problems, technical solutions and advantages solved by the present invention more apparent, the present invention will be further described in detail with reference to the accompanying drawings and preferred embodiments. It is to be understood that the following description of the specific embodiments is merely exemplary in nature and is in no way intended to limit the disclosure, application, or uses of the invention.
As shown in fig. 1, a two-speed ratio planetary gear speed change mechanism 001 according to a preferred embodiment of the present invention includes: the two-speed-ratio planetary gear speed change mechanism 001 further comprises a planetary gear set 20, a first gear selecting and shifting device 30, a second gear selecting and shifting device 40 and a gear ring braking device 50, wherein the planetary gear set 20 comprises a sun gear 21, a gear ring 22, a planet carrier 23 and a plurality of planet gears 24, the planet carrier 23 can be selectively connected with the input shaft 11 or the frame 10 through the first gear selecting and shifting device 30 to transmit torque, the output shaft 12 can be selectively connected with the gear ring 22 or the planet carrier 23 through the second gear selecting and shifting device 40 to transmit torque, and the gear ring 22 can be connected with the frame 10 through the gear ring braking device 50 to transmit torque or disconnected from the frame 10 to transmit no torque.
Wherein, the input shaft 11 and the sun gear 21 are connected or combined into the same member, the first gear selecting and shifting device 30 comprises a first gear selecting and shifting driving member 31 connected with the input shaft 11, a first gear selecting and shifting driven member 32 connected with the planet carrier 23, and a first gear selecting and shifting locking member 33 connected with the frame 10, the first gear selecting and shifting driven member 32 can be respectively connected with the first gear selecting and shifting driving member 31 or the first gear selecting and shifting locking member 33 for transmitting torque, the second gear selecting and shifting device 40 comprises a second gear selecting and shifting driving member 41 connected with the planet carrier 23, a second gear selecting and shifting driven member 42 connected with the output shaft 12 or combined into the same member, a second gear selecting and shifting ring gear connecting member 43 connected with the ring gear 22, the second gear selecting and shifting driven member 42 can be respectively connected with the second gear selecting and shifting driving member 41 or the second gear selecting and shifting ring gear connecting member 43 for transmitting torque, the ring gear braking device 50 comprises an inner ring 51 connected with the ring, An outer race 52 connected to the frame 10, and an inner race 51 engageable with the outer race 52 to transmit torque or disengageable from transmitting torque.
In addition, the first gear selecting and shifting driven member 32 may be coupled to neither the first gear selecting and shifting driving member 31 nor the first gear selecting and shifting locking member 33, and the second gear selecting and shifting driven member 42 may be coupled to neither the second gear selecting and shifting driving member 41 nor the second gear selecting and shifting ring gear connecting member 43.
For a better understanding of the two-speed ratio planetary transmission 001 according to the preferred embodiment of the present invention, the movement and torque transmission of the two forward speed ratios and one reverse speed ratio in this embodiment will be described in detail below:
motion and torque transfer at the first forward speed ratio of the two-speed ratio planetary transmission 001:
the second gear selecting and shifting follower 42 is coupled with the second gear selecting and shifting driving member 41, the first gear selecting and shifting follower 32 is neither coupled with the first gear selecting and shifting driving member 31 nor coupled with the first gear selecting and shifting locking member 33, and the inner race 51 is engageable with the outer race 52.
The motion and the torque are input by the input shaft 11, input into the planetary gear set 20 through the sun gear 21, reduced in speed, output by the planet carrier 23 (the gear ring 22 connected with the inner ring 51 of the gear ring brake is locked by the gear ring brake 50 connected with the frame 10), and then transmitted to the output shaft 12 through the second gear selecting and shifting driving element 41 and the second gear selecting and shifting driven element 42. The motion and torque transmission paths and the reaction torque transmission paths are shown in fig. 2.
Motion and torque transfer at the second forward speed ratio of the two-speed ratio planetary transmission 001:
the first gear selecting and shifting driven member 32 is coupled with the first gear selecting and shifting driving member 31, the second gear selecting and shifting driven member 42 is coupled with the second gear selecting and shifting driving member 41, and the inner ring 51 and the outer ring 52 can be connected or disconnected.
The motion and the torque are input by the input shaft 11, transmitted to the planet carrier 23 through the first gear selecting and shifting driving member 31 and the first gear selecting and shifting driven member 32, and transmitted to the output shaft 12 through the second gear selecting and shifting driving member 41 and the second gear selecting and shifting driven member 42. The motion and torque transmission paths and the reaction torque transmission paths are shown in fig. 3.
The movement and torque transmission of the reverse speed ratio of the two-speed ratio planetary gear transmission mechanism 001:
the first gear selection follower 32 is coupled to the first gear selection locking member 33, and the second gear selection follower 42 is coupled to the second gear selection ring gear coupling member 43, so that the inner race 51 can be disconnected from the outer race 52 without transmitting torque.
The planet carrier 23 connected with the first gear selecting and shifting driven member 32 is locked by the first gear selecting and shifting locking member 33 connected with the frame 10, the motion and the torque are input by the input shaft 11, input into the planetary gear set 20 through the sun gear 21, decelerated and reversed, output to the second gear selecting and shifting ring gear connecting member 43 through the ring gear 22, and then transmitted to the output shaft 12 through the second gear selecting and shifting driven member 42. The motion and torque transmission paths and the reaction torque transmission paths are shown in fig. 4.
From the foregoing, it can be understood that the two-speed-ratio planetary gear speed change mechanism according to the present invention employs a simple planetary gear set, and is a speed change mechanism that is compact, lightweight, efficient, reliable in operation, and easy to manufacture, and thus the present invention accomplishes the task of providing a two-speed-ratio planetary gear speed change mechanism that is compact, lightweight, efficient, and reliable in operation.
In addition, it will also be appreciated that the two-ratio planetary transmission mechanism according to the present invention can be used not only as a two-speed transmission having two speed ratios, but also as an extension capability to combine with other transmission mechanisms into a multiple-ratio transmission having more speed ratios.
It is to be understood that the above description of the invention is merely exemplary, and that variations that do not depart from the gist of the invention are intended to be within the scope of the invention, and such variations are not to be construed as departing from the spirit and scope of the invention.
Claims (3)
1. A two-speed-ratio planetary gear speed change mechanism comprises an input shaft, an output shaft and a rack, and is characterized in that the two-speed-ratio planetary gear speed change mechanism also comprises a planetary gear set, a first gear selecting and shifting device, a second gear selecting and shifting device and a gear ring braking device, wherein the planetary gear set comprises a sun gear, a gear ring, a planet carrier and a plurality of planet gears;
the input shaft is connected with the sun wheel or combined into the same component, the first gear selecting and shifting device comprises a first gear selecting and shifting driving part connected with the input shaft, a first gear selecting and shifting driven part connected with the planet carrier and a first gear selecting and shifting locking part connected with the frame, the first gear selecting and shifting driven part can be respectively connected with the first gear selecting and shifting driving part or the first gear selecting and shifting locking part to transmit torque, the second gear selecting and shifting device comprises a second gear selecting and shifting driving part connected with the planet carrier, the gear ring braking device comprises an inner ring connected with the gear ring of the planetary gear set and an outer ring connected with the rack, and the inner ring can be connected with or disconnected from the outer ring;
the first gear selecting and shifting driven piece can be neither connected with the first gear selecting and shifting driving piece nor connected with the first gear selecting and shifting locking piece, and the second gear selecting and shifting driven piece can be neither connected with the second gear selecting and shifting driving piece nor connected with the second gear selecting and shifting gear ring connecting piece.
2. The two-speed planetary gear transmission mechanism according to claim 1, wherein the two-speed planetary gear transmission mechanism is operable as a two-speed transmission having two forward speed ratios and one reverse speed ratio.
3. The two-speed ratio planetary transmission as in claim 1, wherein the two-speed ratio planetary transmission is combinable with other transmission mechanisms into a multiple-speed ratio transmission having more transmission ratios.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201611185504.0A CN108223704B (en) | 2016-12-21 | 2016-12-21 | Two-speed-ratio planetary gear speed change mechanism |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201611185504.0A CN108223704B (en) | 2016-12-21 | 2016-12-21 | Two-speed-ratio planetary gear speed change mechanism |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN108223704A CN108223704A (en) | 2018-06-29 |
| CN108223704B true CN108223704B (en) | 2020-06-30 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201611185504.0A Active CN108223704B (en) | 2016-12-21 | 2016-12-21 | Two-speed-ratio planetary gear speed change mechanism |
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Family Cites Families (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2627799Y (en) * | 2003-06-19 | 2004-07-28 | 中国一拖集团有限公司 | Front-mounted power output device for wheeled tractor |
| DE102006006641A1 (en) * | 2006-02-14 | 2007-08-30 | Zf Friedrichshafen Ag | Multi-step gear for planetary gear e.g. automatic gearbox for motor vehicle, has four planetary trains, seven rotational shafts and six shift elements, comprising brakes and clutches |
| US8790211B2 (en) * | 2010-01-26 | 2014-07-29 | GKN Driveline Newton, LLC | Gear assembly for motor vehicle |
| WO2013177783A1 (en) * | 2012-05-31 | 2013-12-05 | Robert Bosch Gmbh | Two-speed transmission and electric vehicle |
| US20150158382A1 (en) * | 2013-12-05 | 2015-06-11 | Avl Powertrain Engineering, Inc. | Two-speed transmission for electric vehicle |
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- 2016-12-21 CN CN201611185504.0A patent/CN108223704B/en active Active
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| CN108223704A (en) | 2018-06-29 |
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| TA01 | Transfer of patent application right |
Effective date of registration: 20190916 Address after: 400050 Chongqing Jiulongpo Xingsheng Road No. 4 Qing Valley Polytechnic entrepreneurship research Applicant after: Chongqing Hongling Power Technology Co., Ltd. Address before: No. 196, Rui Tian Lu, Yuzhong District, Chongqing City, Chongqing Applicant before: Chongqing hard core drive technology Co., Ltd. |
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