CN1945056A - Return flow type stepless speed change driving device for automobile - Google Patents
Return flow type stepless speed change driving device for automobile Download PDFInfo
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- CN1945056A CN1945056A CN 200610054549 CN200610054549A CN1945056A CN 1945056 A CN1945056 A CN 1945056A CN 200610054549 CN200610054549 CN 200610054549 CN 200610054549 A CN200610054549 A CN 200610054549A CN 1945056 A CN1945056 A CN 1945056A
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Abstract
The present invention relates to stepless speed change device for automobile and is especially one kind of stepless speed change device for automobile with metal belt as return flow speed regulating mechanism. The return flow type stepless speed change device consists of stepless speed regulating metal belt unit, fixed speed ratio drive unit, planet rank unit, clutch set, brake, the first speed reducing gear pair, differentiator, etc. The present invention features one increased brake to raise the astern driving efficiency and to ensure the same position of the metal belt during starting and astern of automobile.
Description
Technical field
The present invention relates to a kind of automative stepless speed-variation transmission device, be specifically related to a kind of with the automative stepless speed-variation transmission device of metal tape as the backflow speed regulating mechanism.
Background technique
The transmission device of a large amount of continuously variables that adopt mainly comprises metal tape/metal chain transmission and hydraulic machine speed change transmission dual mode on the automobile at present.The slowest ratio of regulation speed change gear and the ratio of minimum speed ratio are its speed ratio excursion, for a kind of desirable car stepless change system, its speed ratio excursion can guarantee more than 6 motor at the steady operation point under the different accelerator open degrees all the time on best fuel-economy line.
For pure metal band/metal chain infinitely variable speed transmission, be subjected to the restriction of physical dimension, its speed ratio excursion is generally about 5.1, is lower than the desirable speed ratio excursion of car speed variator system.Satisfying under the prerequisite of car drive, all the time on best fuel-economy guide line, must widen the speed ratio excursion of metal tape/metal chain stepless change transmission in order to ensure the engine steady state operation point.Also there is transmission efficiency problem on the low side in pure metal band/metal chain infinitely variable speed transmission.
Summary of the invention
The object of the present invention is to provide a kind of novel infinitely variable speed transmission, to solve the existing problem that automative stepless speed-variation transmission device speed ratio excursion is narrow partially, transmission efficiency is on the low side.
Return flow type stepless speed change driving device involved in the present invention is based on pure metal band stepless speed changes devices.Different with traditional way of utilizing the metal tape stepless speed changes devices to transmit the automobile driving power, the present invention utilizes the high efficiency range of metal tape stepless speed changes devices, adopts multistage speed governing design method to realize system's speed change.When the automobile low cruise, engine power is transmitted by the high constant speed ratio transmission device of transmission efficiency, and the metal tape stepless speed changes devices only is used to transmit backflow speed governing power to realize stepless speed regulation; When high-speed running automobile, utilize the independent transferring power of efficient region of metal tape stepless speed changes devices, thus the purpose that realizes widening metal tape stepless speed changes devices speed ratio excursion, improves overall transmission efficiency.The speed ratio excursion of this device greater than 7, minimum transmission efficiency is higher than 80%.
Return flow type stepless speed change driving device structure involved in the present invention as shown in Figure 2, comprise input shaft 1, splined shaft 5, clutch 6, connecting bushing 7, break 8, clutch 12, connecting bushing 13, overrunning clutch 14, driven shaft 16, clutch 17, one-level deceleration driven gear 21, main deceleration driving gear axle 22, main deceleration driven gear 23, differential mechanism 24, the metal tape stepless speed-regulating device, the constant speed ratio transmission device, the planet arranging device, described metal tape stepless speed-regulating device is by driving pulley group 2, metal tape 9 and driven belt wheels 10 3 parts are formed, described constant speed ratio transmission device is by input gear 4, intermediate gear 3 and output gear shaft 11 3 parts are formed, and described planet arranging device is by sun gear 18, planet wheel 19, gear ring 20 and planet carrier 15 4 parts are formed.
Input shaft 1 is connected with motor to accept from the power of motor input; The driving pulley group 2 of metal tape stepless speed-regulating device is connected on the input shaft 1, and the driven belt wheels 10 of metal tape stepless speed-regulating device are connected on the driven shaft 16, and driving pulley 2 links to each other by metal tape 9 with driven pulley 10; The driving disc of clutch 6 is connected on the input shaft 1 by key, and splined shaft 5 skies are enclosed within on the input shaft 1, and connecting bushing 7 links together the driven disc and the break 8 of splined shaft 5, clutch 6; The input gear 4 of constant speed ratio transmission device is fixed on the splined shaft 5, output gear shaft 11 skies are enclosed within on the driven shaft 16, identical with output gear shaft 11 sense of rotation for guaranteeing constant speed ratio transmission device input gear 4, input gear 4 carries out the transition to output gear shaft 11 by intermediate gear 3; The driving disc of the inner ring of overrunning clutch 14 and clutch 12 is fixed on the constant speed ratio transmission device output gear shaft 11 by spline, the outer ring of the driven disc of clutch 12 and overrunning clutch 14 links together by connecting bushing 13, the driven disc of clutch 12 is connected on the planet carrier 15 of planet arranging device simultaneously, thereby constant speed can be exported to the gear ring 20 of planet row mechanism than the transmission of power of driving mechanism; Planet row's the sun gear 18 and the driving disc of clutch 17 are connected on the driven shaft 16 by spline, the driven disc of clutch 17 is connected on the gear ring 20 of planet row mechanism, power on the driven shaft 16 both can be delivered to gear ring 20 outputs by sun gear 18, the planet carrier 15 that planet is arranged mechanism, also can be by be directly delivered to gear ring 20 outputs in conjunction with clutch 17; Planet row's gear ring 20 and 21 engagements of one-level deceleration driven gear, main deceleration driving gear on the main deceleration driving gear axle 22 and 23 engagements of main deceleration driven gear, the power on planet row's the gear ring 20 is delivered to differential mechanism 24 to drive automobile running through one-level deceleration driven gear 21, main deceleration driving gear axle 22, main deceleration driven gear 23.
Return flow type stepless speed change driving device involved in the present invention has super large speed ratio excursion.By the various combination of each clutch separation and joint, and the difference of metal tape stepless speed changes devices speed ratio is selected, and this transmission device speed ratio Changing Pattern can be divided into reversing speed governing section, mix speed governing section and pure stepless speed regulation section three parts.The speed ratio Changing Pattern of return flow type stepless speed change driving device as shown in Figure 6.
Clutch 6 and clutch 12 engage, and the direction layout of overrunning clutch 14 makes it can transmit positive torques jointly with clutch 12 in this case, and return flow type stepless speed change driving device was in and mixed the speed governing section this moment, and the power flow process as shown in Figure 3.
Clutch 6 separates with clutch 12, and clutch 17 engages, and this moment, return flow type stepless speed change driving device was in pure stepless speed regulation section, and the power flow process as shown in Figure 4.
Clutch 6 separates with clutch 17, clutch 12 and break 8 combinations, and this moment, return flow type stepless speed change driving device was in reversing speed governing section, and the power flow process is as shown in Figure 5.
The transmission efficiency of return flow type stepless speed change driving device involved in the present invention is higher than pure metal band stepless speed changes devices.In whole drive system, the metal tape stepless speed changes devices of being made up of driving pulley group 2, metal tape 9 and driven belt wheels 10 is underneath drive efficient parts, and the constant speed ratio transmission device efficient of being made up of input gear 4, intermediate gear 3 and output gear shaft 11 3 parts is almost 100%.When return flow type stepless speed change driving device is in the operation of mixing speed governing section, the speed governing power that the metal tape stepless speed changes devices transmits is less very little at the shared ratio of whole engine-driving power, most of power that powered vehicle is travelled will transmit by the very high constant speed ratio transmission device of transmission efficiency, and its result will make the transmission efficiency of whole system obviously increase than the transmission efficiency at pure metal band stepless speed changes devices.
The invention has the advantages that to compare and have the advantages that the speed ratio excursion is wider, transmission efficiency is high with existing automative stepless speed-variation transmission device.
Description of drawings
Fig. 1 is the return flow type stepless speed change driving device structural design drawing;
Fig. 2 is a return flow type stepless speed change driving device structural principle schematic representation;
Fig. 3 is return flow type stepless speed change driving device mixing speed governing section power schematic flow sheet;
Fig. 4 is the pure stepless speed regulation section of a return flow type stepless speed change driving device power schematic flow sheet;
Fig. 5 is a return flow type stepless speed change driving device reverse gear section power schematic flow sheet;
Fig. 6 is a return flow type stepless speed change driving device speed ratio Changing Pattern schematic representation.
Among the figure: the 1-input shaft; 2-driving pulley group; The 3-intermediate gear; 4-imports gear; The 5-splined shaft; The 6-clutch; The 7-connecting bushing; The 8-break; The 9-metal tape; 10-driven belt wheels; The 11-output gear shaft; The 12-clutch; The 13-connecting bushing; The 14-overrunning clutch; The 15-planet carrier; The 16-driven shaft; The 17-clutch; The 18-sun gear; The 19-planet wheel; The 20-gear ring; 21-one-level deceleration driven gear; 22-master's deceleration driving gear axle; 23-master's driven gear that slows down; The 24-differential mechanism; I-metal tape speed ratio; i
t-return flow type stepless speed change driving device speed ratio; i
Max-metal tape slowest ratio; i
MinThe minimum speed ratio of-metal tape.
Embodiment
The invention will be further described below in conjunction with drawings and Examples.
Embodiment:
This patent actuator system annexation is: input shaft 1 one ends of return flow type stepless speed change driving device directly link to each other with motor, the other end then links to each other with the driving pulley group 2 of metal tape stepless speed-regulating device and the driving disc of clutch 6, and is fused by the input gear 4 of splined shaft 5 with driven disc, break 8 and the constant speed ratio transmission device of clutch 6; 10 of the driven belt wheels of metal tape stepless speed-regulating device are connected with planet row's the sun gear 18 and the driving disc of clutch 17 by axle 16, and couple together by the driving pulley group 2 and the driven belt wheels 10 of metal tape 9 with the metal tape stepless speed-regulating device; Identical with output gear shaft 11 sense of rotation for guaranteeing constant speed ratio transmission device input gear 4, input gear 4 carries out the transition to output gear shaft 11 by intermediate gear 3.And, between constant speed ratio transmission device output shaft 13 and planet carrier 15, be provided with overrunning clutch 14 in order to prevent return flow type stepless speed change driving device emergent power reverse flow conditions when mixing speed governing section and pure stepless speed regulation section and change mutually.Simultaneously, in order to guarantee the anti-realization of dragging operating mode and electric power generation function of motor, except that overrunning clutch 14, also clutch 12 has been assembled in parallel connection between constant speed ratio transmission device output shaft 13 and planet carrier 15; The output disc of clutch 12 and overrunning clutch 14 is connected by planet carrier 15 planet wheels 19 with planet row in parallel; One-level deceleration driven gear 21 is connected with planet row's the gear ring 20 and the driven disc of clutch 17, and links to each other through the sun gear 18 of clutch 17 with planet row; At last, the power of motor is passed to automobile output semiaxis and tire through main deceleration driving gear axle 22, main deceleration driven gear 23 and differential mechanism 24, to drive automobile running.
In conjunction with Fig. 1, the power flow process under the various driving cycles of return flow type stepless speed change transmission automobile is explained:
1, starting operating mode
Engine start, and to the in addition accurately control of the cohesive process of clutch 6, return flow type stepless speed change driving device is in to mix on the speed governing section to be done.This moment, the power flow process of return flow type stepless speed change transmission system was: the motor → input shaft 1 → driving pulley group 2 → clutch 6 → connecting bushing 13 → clutch 12 of input gear 4 → intermediate gear 3 → output gear shaft 11 → constant speed ratio transmission device, overrunning clutch 14 → planet carrier 15 → planetary pinion 19 → gear ring 20 → one-level deceleration driven gear 21 → main deceleration driving gear axle 22 → main deceleration driven gear 23 → differential mechanism 24 → wheel.Simultaneously, through planet row power dividing, part power passes with driving pulley 2, as the usefulness of speed governing through metal tape 9.Backflow power conveying flow is: planet carrier 15 → planetary pinion 19 → sun gear 18 → transmission shaft 16 → driven belt wheels 10 → metal tape 9 → driving pulley 2 → input shaft 1;
2, low speed driving operating mode
This operating mode is basic identical with the power flow process of starting operating mode, and return flow type stepless speed change driving device is in and mixes the work of speed governing section.Clutch 6 was in progressively in the cohesive process when its difference just was vehicle starting, and clutch 6 is in complete bonding state under the low speed driving operating mode.This moment, the power flow process of return flow type stepless speed change transmission system was: the motor → input shaft 1 → driving pulley group 2 → clutch 6 → connecting bushing 13 → clutch 12 of input gear 4 → intermediate gear 3 → output gear shaft 11 → constant speed ratio transmission device, overrunning clutch 14 → planet carrier 15 → planetary pinion 19 → gear ring 20 → one-level deceleration driven gear 21 → main deceleration driving gear axle 22 → main deceleration driven gear 23 → differential mechanism 24 → wheel.Simultaneously, through planet row power dividing, part power is passed driving pulley 2 back through metal tape 9, as the usefulness of speed governing.Backflow power conveying flow is: planet carrier 15 → planetary pinion 19 → sun gear 18 → transmission shaft 16 → driven belt wheels 10 → metal tape 9 → driving pulley 2 → input shaft 1;
3, the operating mode of running at high speed
Along with increasing of the speed of a motor vehicle, return flow type stepless speed change driving device will enter pure stepless speed regulation section by mixing the speed governing section, and this moment, the power flow process of return flow type stepless speed change transmission system was: motor → input shaft 1 → driving pulley group 2 → metal tape 9 → driven belt wheels 10 → driven shaft 16 → sun gear 18 → clutch 17 → one-level deceleration driven gear 21 → main deceleration driving gear axle 22 → main deceleration driven gear 23 → differential mechanism 24 → wheel;
4, astern condition
For improving under the astern condition, the transmission efficiency of whole transmission device is utilized break 8 locking planet carriers, realizes car-backing function.This moment, the power flow process of return flow type stepless speed change transmission system was: motor → input shaft 1 → driving pulley group 2 → metal tape 9 → driven belt wheels 10 → driven shaft 16 → sun gear 18 → planetary pinion 19 → gear ring 20 → one-level deceleration driven gear 21 → main deceleration driving gear axle 22 → main deceleration driven gear 23 → differential mechanism 24 → wheel.
Claims (1)
1. return flow type stepless speed change driving device, it comprises input shaft (1), splined shaft (5), clutch (6), connecting bushing (7), break (8), clutch (12), connecting bushing (13), overrunning clutch (14), driven shaft (16), clutch (17), one-level deceleration driven gear (21), main deceleration driving gear axle (22), main deceleration driven gear (23), differential mechanism (24), the metal tape stepless speed-regulating device, the constant speed ratio transmission device, the planet arranging device, described metal tape stepless speed-regulating device is by driving pulley group (2), metal tape (9) and driven belt wheels (10) three parts are formed, described constant speed ratio transmission device is by input gear (4), intermediate gear (3) and output gear shaft (11) three parts are formed, described planet arranging device is by sun gear (18), planet wheel (19), gear ring (20) and planet carrier (15) four parts are formed, and it is characterized in that: input shaft (1) is connected with motor to accept from the power of motor input; The driving pulley group (2) of metal tape stepless speed-regulating device is connected on the input shaft (1), and the driven belt wheels (10) of metal tape stepless speed-regulating device are connected on the driven shaft (16), and driving pulley (2) links to each other by metal tape (9) with driven pulley (10); The driving disc of clutch (6) is connected on the input shaft (1) by key, and splined shaft (5) sky is enclosed within on the input shaft (1), and connecting bushing (7) links together the driven disc and the break (8) of splined shaft (5), clutch (6); The input gear (4) of constant speed ratio transmission device is fixed on the splined shaft (5), output gear shaft (11) sky is enclosed within on the driven shaft (16), identical with output gear shaft (11) sense of rotation for guaranteeing constant speed ratio transmission device input gear (4), input gear (4) carries out the transition to output gear shaft (11) by intermediate gear (3); The driving disc of the inner ring of overrunning clutch (14) and clutch (12) is fixed on the constant speed ratio transmission device output gear shaft (11) by spline, the outer ring of the driven disc of clutch (12) and overrunning clutch (14) links together by connecting bushing (13), the driven disc of clutch (12) is connected on the planet carrier (15) of planet arranging device simultaneously, thereby constant speed can be exported to the gear ring (20) of planet row mechanism than the transmission of power of driving mechanism; Planet row's the sun gear (18) and the driving disc of clutch (17) are connected on the driven shaft (16) by spline, the driven disc of clutch (17) is connected on the gear ring (20) of planet row mechanism, power on the driven shaft (16) both can be delivered to gear ring (20) output by sun gear (18), the planet carrier (15) that planet is arranged mechanism, also can export by be directly delivered to gear ring (20) in conjunction with clutch (17); Planet row's gear ring (20) and one-level deceleration driven gear (21) engagement, the engagement of main deceleration driving gear on the main deceleration driving gear axle (22) and main deceleration driven gear (23), the power on planet row's the gear ring (20) is delivered to differential mechanism (24) to drive automobile running through slow down driven gear (21), main deceleration driving gear axle (22), main deceleration driven gear (23) of one-level.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200610054549 CN1945056A (en) | 2006-10-30 | 2006-10-30 | Return flow type stepless speed change driving device for automobile |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200610054549 CN1945056A (en) | 2006-10-30 | 2006-10-30 | Return flow type stepless speed change driving device for automobile |
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| CN1945056A true CN1945056A (en) | 2007-04-11 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN 200610054549 Pending CN1945056A (en) | 2006-10-30 | 2006-10-30 | Return flow type stepless speed change driving device for automobile |
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103307248A (en) * | 2013-06-26 | 2013-09-18 | 重庆大学 | Reverse-flow type hydrodynamic mechanical automatic variable transmission device |
| CN107627832A (en) * | 2017-09-08 | 2018-01-26 | 重庆大学 | Reverse-flow type power coupling transmission system |
| CN108412982A (en) * | 2018-05-11 | 2018-08-17 | 中国人民解放军陆军军事交通学院 | A kind of novel combination type non-circular gear infinitely variable speed transmission |
| CN109624687A (en) * | 2019-01-29 | 2019-04-16 | 重庆大学 | A kind of single motor hybrid power system based on stepless transmission |
| CN110735904A (en) * | 2019-10-23 | 2020-01-31 | 重庆大学 | Self-adaptive hydraulic mechanical transmission system of loader |
-
2006
- 2006-10-30 CN CN 200610054549 patent/CN1945056A/en active Pending
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103307248A (en) * | 2013-06-26 | 2013-09-18 | 重庆大学 | Reverse-flow type hydrodynamic mechanical automatic variable transmission device |
| CN103307248B (en) * | 2013-06-26 | 2015-11-25 | 重庆大学 | Reverse-flow type hydrodynamic mechanical automatic variable transmission device |
| CN107627832A (en) * | 2017-09-08 | 2018-01-26 | 重庆大学 | Reverse-flow type power coupling transmission system |
| CN108412982A (en) * | 2018-05-11 | 2018-08-17 | 中国人民解放军陆军军事交通学院 | A kind of novel combination type non-circular gear infinitely variable speed transmission |
| CN108412982B (en) * | 2018-05-11 | 2024-01-26 | 中国人民解放军陆军军事交通学院 | Combined non-circular gear stepless speed change transmission device |
| CN109624687A (en) * | 2019-01-29 | 2019-04-16 | 重庆大学 | A kind of single motor hybrid power system based on stepless transmission |
| CN109624687B (en) * | 2019-01-29 | 2021-10-22 | 重庆大学 | Single-motor hybrid power system based on continuously variable transmission |
| CN110735904A (en) * | 2019-10-23 | 2020-01-31 | 重庆大学 | Self-adaptive hydraulic mechanical transmission system of loader |
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