CN102635677A - Traction drive continuously variable transmission - Google Patents
Traction drive continuously variable transmission Download PDFInfo
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- CN102635677A CN102635677A CN2012101421846A CN201210142184A CN102635677A CN 102635677 A CN102635677 A CN 102635677A CN 2012101421846 A CN2012101421846 A CN 2012101421846A CN 201210142184 A CN201210142184 A CN 201210142184A CN 102635677 A CN102635677 A CN 102635677A
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- cone roller
- friction wheel
- gear
- transmission
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Abstract
The invention belongs to the technical field of a transmission system of mechanical equipment, relates to a mechanical transmission and particularly relates to a traction drive continuously variable transmission. The traction drive continuously variable transmission comprises an input bevel gear, a driven helical gear, an outer frictional wheel, an outer conic idler wheel, a driving pin, an inner frictional wheel, an inner conic idler wheel, a bearing support, a bearing and a hydraulic system; when a hydraulic chamber is compressed, the inner conic idler wheel and the outer conic idler wheel move outwards along a middle shaft line, so that the inner frictional wheel is contacted with the conic surface of the inner conic idler wheel to drive a planetary frame to rotate, the outer frictional wheel is contacted with the conic surface of the outer conic idler wheel to drive a gear ring to rotate, and the energy of a planetary line solar wheel is output through rotation of the gear ring and the planetary frame. With the adoption of the traction drive continuously variable transmission, the functions of power transmission, stepless speed change and frictional pair normal loading force control are integrated into a whole; and the traction drive continuously variable transmission has the advantages of being simple and compact in structure, wider in transmission range, high in transmission efficiency, high in transmission power and flexible and convenient in controlling and the like.
Description
Technical field
The invention belongs to machinery transmission system technical field, relate to a kind of mechanical transmission, particularly a kind of traction drive stepless speed variator.
Background technique
Be compared to traditional step change transmission, stepless speed variator is because its good and economic and travelling comfort more and more receive researcher and Consumer's concern.That the major advantage of stepless speed variator using vehicle is is easy to operate, it is comfortable to drive, save oil consumption etc.The principal mode of mechanical continuously-variable transmission has steel-belt type stepless speed variator, chain-type continuously variable transmission and the towed stepless speed variator of friction etc. at present.The steel-belt type stepless speed variator has been widely used on the low power automobile, but the mechanical continuously-variable transmission of transferring power is less expeditiously in high-powered automobiles.
Summary of the invention
The objective of the invention is to overcome the defective that exists in the existing technology; Design and a kind of transmission of power function, stepless shift function and friction pair normal direction loading force control function are integrated in one, have simple and compact for structure, transmission range broad, transmission efficiency is high, the power transmission is big, control is flexible traction drive stepless speed variator.
To achieve these goals; Technological scheme of the present invention is a kind of traction drive stepless speed variator of design, comprises input bevel gear, driven helical gear, external friction wheel, outer cone roller, driving pin, interior friction wheel, female cone roller, bearing bracket, bearing, planet row and hydraulic system;
Wherein, planet row is made up of gear ring, planet carrier and planet row sun gear;
The bottom surface of female cone roller is provided with the groove along its axial direction; Be processed with the boss that is complementary with female cone roller bottom recesses in the bottom surface of outer cone roller; The boss of the groove of female cone roller and outer cone roller is slidingly matched; Internal surface and boss surface at groove form the sealing hydraulic pressure cavity, and the female cone roller is connected by driving pin with the outer cone roller, and driving pin has limited relatively rotating of female cone roller and outer cone roller; Top at the outer cone roller is connected with driven helical gear is coaxial; On axle, have center hole; This center hole is an oil duct, and hydraulic system communicates with hydraulic pressure cavity through oil duct, driven helical gear and the engagement of input bevel gear; At bearing bracket, female cone roller and bearing bracket produce and slide and rotation the female cone roller through Bearing Installation; Female cone roller and the corresponding respectively interior friction wheel of the conical surface of outer cone roller and the rubbing surface of external friction wheel, interior friction wheel is connected with gear ring with planet carrier through spline with the external friction wheel;
When said hydraulic pressure cavity is implemented pressurization; Said female cone roller and said outer cone roller outwards move along the medial axis; Make said interior friction wheel contact and drive the planet carrier rotation with the conical surface of said female cone roller; Said external friction wheel contacts with the conical surface of said outer cone roller and drives the gear ring rotation, and the rotation of gear ring and planet carrier makes the energy output of planet row sun gear.
Said traction drive stepless speed variator also comprises the speed change support, and friction wheel and external friction wheel move left and right realized stepless change in said speed change support was used to control.
The present invention is achieved in that assembled of the present invention; The input bevel gear is through driving outer cone gear axial rotation with driven helical gear engagement; Because the annexation between outer cone gear and the female cone gear can be taken the female cone gear to and rotate vertically; This moment, hydraulic system was through oil duct injection pressure in the hydraulic pressure cavity between cone gear and the female cone gear outward; The outer cone gear is upwards conflicted with the external friction wheel contact, the female cone gear downwards and the conflict of interior friction wheel contact; And then come external friction wheel and interior friction wheel to rotate, because the external friction wheel is connected with the planet carrier axle center with gear ring engagement, interior friction wheel, can takes the rotation of gear ring and planet carrier to and will drive planet row sun gear and rotate; The speed change support can make external friction wheel and interior friction wheel move left and right play chronotropic action.
Advantage of the present invention and beneficial effect are: the present invention is integrated in one transmission of power function, stepless shift function and friction pair normal direction loading force control function, has advantages such as simple and compact for structure, transmission range broad, transmission efficiency is high, the power transmission is big, control is flexible.
Description of drawings
Fig. 1 is a structural representation of the present invention;
Fig. 2 is the left view of Fig. 1;
Wherein, 1-input bevel gear; The driven helical gear of 2-; 3-speed change support; The 4-oil duct; 5-external friction wheel; 6-outer cone roller; The 7-driving pin; Friction wheel in the 8-; 9-female cone roller; The 10-hydraulic pressure cavity; The 11-bearing bracket; The 12-bearing; 13-planet row sun gear; The 14-planet carrier; The 15-gear ring; The 16-hydraulic system.
Embodiment
Further describe below in conjunction with accompanying drawing and embodiment's specific embodiments of the invention, following examples only are used for technological scheme of the present invention more clearly is described, and can not limit protection scope of the present invention with this.
Like Fig. 1, shown in Figure 2; The technological scheme of practical implementation of the present invention is: a kind of traction drive stepless speed variator comprises input bevel gear 1, driven helical gear 2, external friction wheel 5, outer cone roller 6, driving pin 7, interior friction wheel 8, female cone roller 9, bearing bracket 11, bearing 12, planet row and hydraulic system 16;
Wherein, planet row is made up of gear ring 15, planet carrier 14 and planet row sun gear 13;
The bottom surface of female cone roller 9 is provided with the groove along its axial direction; Be processed with the boss that is complementary with female cone roller 9 bottom recesses in the bottom surface of outer cone roller 6; The boss of the groove of female cone roller 9 and outer cone roller 6 is slidingly matched; Internal surface and boss surface at groove form sealing hydraulic pressure cavity 10, and female cone roller 9 is connected by driving pin 7 with outer cone roller 6, and driving pin 7 has limited relatively rotating of female cone roller 9 and outer cone roller 6; Top and driven 2 coaxial connections of helical gear at outer cone roller 6; On axle, have center hole; This center hole is an oil duct 4, and hydraulic system 16 communicates with hydraulic pressure cavity 10 through oil duct 4, driven helical gear 2 and 1 engagement of input bevel gear; Female cone roller 9 is installed in bearing bracket 11 through bearing 12, and female cone roller 9 produces with bearing bracket 11 and slides and rotation; The rubbing surface of friction wheel 8 and external friction wheel 5 in the conical surface of female cone roller 9 and outer cone roller 6 is corresponding respectively, interior friction wheel 8 and external friction are taken turns 5 and are connected with gear ring 15 with planet carrier 14 through spline;
When said hydraulic pressure cavity 10 is implemented pressurization; Said female cone roller 9 outwards moves along the medial axis with said outer cone roller 6; Make said interior friction wheel 8 contact and drive planet carrier 14 rotations with the conical surface of said female cone roller 9; Said external friction wheel 5 contacts drive gear ring 15 with the conical surface of said outer cone roller 6 and rotates, and the rotation of gear ring 15 and planet carrier 14 makes the energy output of planet row sun gear 13.
Said traction drive stepless speed variator also comprises speed change support 3, and friction wheel 8 was taken turns 5 move left and right with external friction and realized stepless change in said speed change support 3 was used to control.
On the whole, power transmission process can be divided into the shunting and the two large divisions of confluxing.At first; Power passes to driven helical gear 2 by input bevel gear 1 through the gear engagement effect; Driven helical gear 2 can drive icicle axle and outer cone roller 6; Add the effect of driving pin 7, can make the common revolution under the supporting effect of bearing 12 of driven helical gear 2, female cone roller 9, outer cone roller 6.Fluid is provided for hydraulic pressure cavity 10 through hydraulic system 16; Form oil pressure in the chamber; Make female cone roller 9 and outer cone roller 6 that the trend that struts arranged; Guaranteed sufficiently high normal direction impacting force between interior friction wheel 8 and female cone roller 9, external friction wheel 5 and the outer cone roller 6, utilized traction to produce tractive force and give two friction wheels, realized the shunting of power the transmission of power of two circular cone rollers.Interior friction wheel 8 and external friction wheel 5 are arranged transmission of power through the effect of spline respectively to planet planet carrier 14 and gear ring 15, process planet row's the effect of confluxing, power is by sun gear 13 outputs.
System is when transferring power; Hydraulic pressure cavity 10 produces hydraulic coupling through hydraulic system 16 fuel feeding; This hydraulic coupling will produce the component along female cone roller 9 and outer cone roller 6 axial directions; This component makes female cone roller 9 and outer cone roller 6 have the trend of separating along its axial direction, and then makes female cone roller 9 and interior friction wheel 8 contact positions, outer cone roller 6 take turns 5 contact positions generation impacting force with external friction.The big I of hydraulic pressure impacting force is rationally controlled according to parameters such as carry-over moment and rotating speeds, when assurance device can transmit greater efficiency, improves its working life, can well avoid transshipping phenomenon in addition.
The above only is a preferential mode of execution of the present invention; Should be pointed out that for those skilled in the art, under the prerequisite that does not break away from know-why of the present invention; Can also make some improvement and retouching, these improvement and retouching also should be regarded as protection scope of the present invention.
Claims (2)
1. a traction drive stepless speed variator is characterized in that: comprise input bevel gear (1), driven helical gear (2), external friction wheel (5), outer cone roller (6), driving pin (7), interior friction wheel (8), female cone roller (9), bearing bracket (11), bearing (12), planet row and hydraulic system (16);
Wherein, planet row is made up of gear ring (15), planet carrier (14) and planet row's sun gear (13);
The bottom surface of female cone roller (9) is provided with the groove along its axial direction; Be processed with the boss that is complementary with female cone roller (9) bottom recesses in the bottom surface of outer cone roller (6); The boss of the groove of female cone roller (9) and outer cone roller (6) is slidingly matched; Internal surface and boss surface at groove form sealing hydraulic pressure cavity (10); Female cone roller (9) is connected by driving pin (7) with outer cone roller (6), and driving pin (7) has limited relatively rotating of female cone roller (9) and outer cone roller (6); Top and coaxial connection of driven helical gear (2) at outer cone roller (6); On axle, have center hole; This center hole is oil duct (4), and hydraulic system (16) communicates with hydraulic pressure cavity (10) through oil duct (4), driven helical gear (2) and input bevel gear (1) engagement; Female cone roller (9) is installed in bearing bracket (11) through bearing (12), and female cone roller (9) produces with bearing bracket (11) and slides and rotation; Female cone roller (9) and the corresponding respectively interior friction wheel (8) of the conical surface of outer cone roller (6) and the rubbing surface of external friction wheel (5), interior friction wheel (8) is connected with gear ring (15) with planet carrier (14) through spline with external friction wheel (5);
When said hydraulic pressure cavity (10) is implemented pressurization; Said female cone roller (9) outwards moves along the medial axis with said outer cone roller (6); Make said interior friction wheel (8) contact and drive planet carrier (14) rotation with the conical surface of said female cone roller (9); Said external friction wheel (5) contacts with the conical surface of said outer cone roller (6) and drives gear ring (15) rotation, and the rotation of gear ring (15) and planet carrier (14) makes the energy output of planet row's sun gear (13).
2. a kind of traction drive stepless speed variator according to claim 1 is characterized in that: also comprise speed change support (3), said speed change support (3) is used to control interior friction wheel (8) and external friction wheel (5) move left and right realizes stepless change.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012101421846A CN102635677A (en) | 2012-05-09 | 2012-05-09 | Traction drive continuously variable transmission |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012101421846A CN102635677A (en) | 2012-05-09 | 2012-05-09 | Traction drive continuously variable transmission |
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| CN102635677A true CN102635677A (en) | 2012-08-15 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN2012101421846A Pending CN102635677A (en) | 2012-05-09 | 2012-05-09 | Traction drive continuously variable transmission |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102797820A (en) * | 2012-08-27 | 2012-11-28 | 北京理工大学 | Biconical type traction transmission device |
| WO2015003552A1 (en) * | 2013-07-12 | 2015-01-15 | Lang Jingming | Stepless speed-changing device |
| CN105240498A (en) * | 2015-09-29 | 2016-01-13 | 江苏金源锻造股份有限公司 | Infinitely variable speed drive device |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4602525A (en) * | 1984-04-27 | 1986-07-29 | Aisin Warner Kabushiki Kaisha | Continuously variable speed transmission for a vehicle having a forward-reverse changeover mechanism |
| US5136890A (en) * | 1990-04-04 | 1992-08-11 | Nissan Motor Co., Ltd. | Hydraulic control system for continuously variable traction roller transmission |
| JPH07190164A (en) * | 1993-12-24 | 1995-07-28 | Nissan Motor Co Ltd | Continuously variable automatic transmission |
| CN1054675C (en) * | 1995-12-28 | 2000-07-19 | 本田技研工业株式会社 | Stepless speed variator |
| EP1568918A2 (en) * | 2004-02-24 | 2005-08-31 | Iveco S.p.A. | Improvements to a driven-axle differential for a vehicle |
| CN1568406B (en) * | 2002-09-30 | 2011-10-05 | 乌尔里克·罗斯 | Infinitely variable adjustable gearbox |
-
2012
- 2012-05-09 CN CN2012101421846A patent/CN102635677A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4602525A (en) * | 1984-04-27 | 1986-07-29 | Aisin Warner Kabushiki Kaisha | Continuously variable speed transmission for a vehicle having a forward-reverse changeover mechanism |
| US5136890A (en) * | 1990-04-04 | 1992-08-11 | Nissan Motor Co., Ltd. | Hydraulic control system for continuously variable traction roller transmission |
| JPH07190164A (en) * | 1993-12-24 | 1995-07-28 | Nissan Motor Co Ltd | Continuously variable automatic transmission |
| CN1054675C (en) * | 1995-12-28 | 2000-07-19 | 本田技研工业株式会社 | Stepless speed variator |
| CN1568406B (en) * | 2002-09-30 | 2011-10-05 | 乌尔里克·罗斯 | Infinitely variable adjustable gearbox |
| EP1568918A2 (en) * | 2004-02-24 | 2005-08-31 | Iveco S.p.A. | Improvements to a driven-axle differential for a vehicle |
Non-Patent Citations (2)
| Title |
|---|
| CHAO WEI，CHUJING SHEN，SHIHUA YUAN: "Analysis Methods of Power characteristics for hydraulic pressing of the Traction Drive Device", 《ADVANCED MATERIALS RESEARCH》, vol. 301303, 27 July 2011 (2011-07-27), pages 1458 - 1463 * |
| 沈楚敬，苑士华，魏超: "液压压紧式牵引传动装置的滑动特性", 《华南理工大学学报（自然科学版）》, vol. 40, no. 2, 29 February 2012 (2012-02-29), pages 82 - 86 * |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102797820A (en) * | 2012-08-27 | 2012-11-28 | 北京理工大学 | Biconical type traction transmission device |
| CN102797820B (en) * | 2012-08-27 | 2015-05-06 | 北京理工大学 | Biconical type traction transmission device |
| WO2015003552A1 (en) * | 2013-07-12 | 2015-01-15 | Lang Jingming | Stepless speed-changing device |
| CN105240498A (en) * | 2015-09-29 | 2016-01-13 | 江苏金源锻造股份有限公司 | Infinitely variable speed drive device |
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Application publication date: 20120815 |