CN102338200A - High-torque continuously variable transmission - Google Patents
High-torque continuously variable transmission Download PDFInfo
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- CN102338200A CN102338200A CN2011102778979A CN201110277897A CN102338200A CN 102338200 A CN102338200 A CN 102338200A CN 2011102778979 A CN2011102778979 A CN 2011102778979A CN 201110277897 A CN201110277897 A CN 201110277897A CN 102338200 A CN102338200 A CN 102338200A
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Abstract
The invention relates to a high-torque continuously variable transmission for transferring high torque. The continuously variable transmission consists of a double-cavity half-toroid continuously variable unit, an ordinary gear train, a double-row differential train and a reversing mechanism which are in traction drive, wherein input power is transmitted in two paths of which one path is transferred to a planet carrier of the double-row differential train through a main shaft, and the other path is transferred to a fifth gear of the double-row differential train through the double-cavity half-toroid continuously variable unit and the ordinary gear train; the two parts of power is output through a second inner gear after being converged at the double-row differential train; an odd number of external engagements of gears of the ordinary gear train are designed, so that the implementation of power split in a closed system is guaranteed; and high-torque output of the continuously variable transmission is guaranteed by the rational selection of the number of the gears of the double-row differential train. In order to meet the requirements of advancing and retreating, during the operation of engineering machinery, the device is provided with the reversing mechanism at the output end.
Description
Technical field
The present invention relates to the gear in the power train, specifically is exactly stepless speed variator.
Background technique
The metal band type stepless speed variator of entrucking use receives the qualification of intermetallic friction factor and the restriction of band resistance to tension; Can only transmit the moment of torsion of
at the most, in being applicable to, liter-car.Compare with metal band type stepless speed variator; Towed half toroidal type stepless speed variator is by the traction transmitting movement and the power that are positioned at input, output awl dish and power transmission roller contact area; Greatly improved the friction condition between surface of contact; Improve the bearing capacity of half toroidal type stepless speed variator, be applicable to big discharge capacity car.Owing to receive traction to shear the restriction of the flexural strength limit of the limit and moving link material, in the time of only can't satisfying engineer machinery operation by the moment of torsion of towed half toroidal type stepless speed variator transmission to the demand of high pulling torque.
Summary of the invention
The object of the invention just provides a kind of stepless speed variator of transmitting large torque, satisfies the demand of engineering machinery to high pulling torque.
The technical solution that realizes the object of the invention is: a kind of power dividing stepless speed variator comprises traction-driven two-chamber half toroidal type stepless change unit, double differential gear train and fixed shaft gear train and output changement.Wherein two-chamber half toroidal type stepless change unit comprises 2 input awl dishes (4a, 4b), 2 outputs awl dish (6a, 6b) and 4 power transmission rollers (5); Double differential gear train comprises first internal gear (29), secondary annulus (28), first planet wheel (15), second planet wheel (16), three-clutch (30) and planet carrier (31); Fixed shaft gear train is made up of first gear (7), second gear (8), first countershaft (9), second clutch (10), second countershaft (11), the 3rd gear (12), the 4th gear (13), the 5th gear (14); Changement is made up of the 6th gear (18), the 3rd main shaft (17), four clutches (19), four main (20), the 7th gear (21), octadentate wheel (23), output shaft (22), the 5th clutch (24), the 5th main shaft (25), the 9th gear (26), reverse wheel (27).Be divided into two-part after the input of the power of motor: a part is passed to the planet carrier (31) of double differential gear train through main shaft, and another part is passed to first internal gear (29) through two-chamber half toroidal type stepless change unit, fixed shaft gear train; This two-part power converges the back from secondary annulus (28) output at double differential gear train, realizes forward and reverse rotation of output shaft through changement.
The double differential gear train of stepless speed variator of the present invention and second main shaft (32), two-chamber half toroidal type stepless change unit and fixed shaft gear train form a closed-loop system; The inner power of locking system exists with power cycle or power dividing form.If power cycle, with the load that strengthens member, the wearing and tearing of aggravation member produce bigger vibration and noise, seriously reduce the performance of transmission system; If power dividing, input power will reduce the torque that each member bears through the dual path transmission, improve the transmission efficiency of system.For fear of the inner power cycle that takes place of this closed-loop system, guarantee to realize power dividing that the outer gearing number of the fixed shaft gear train gear of large torque stepless speed changer is an odd number.
The selection of the double differential gear train number of teeth of stepless speed variator of the present invention is satisfied: the product of first internal gear (29), second planet wheel (16) number of teeth is less than the product of secondary annulus (28), first planet wheel (15) number of teeth.The input torque that this condition guarantees double differential gear train planet carrier (31) and first internal gear (29) in the same way; And then the size that guarantees double differential gear train secondary annulus (28) output torque is the big or small sum of planet carrier (31) and first internal gear (29) input torque, and the input torque of direction and planet carrier (31) and first internal gear (29) is reverse.
Stepless speed variator of the present invention compared with prior art, its remarkable advantage is: time outer gearing of the odd number of (1) fixed shaft gear train gear guarantees that the internal system of sealing realizes power dividing, satisfies engineering machinery to powerful demand.(2) specific (special) requirements of double differential gear train number of teeth configuration guarantees the high pulling torque output of stepless speed variator, satisfies the demand of engineering machinery to high pulling torque.(3), realize permanent high speed or become the output of slowing down through setting to the clutch different conditions.
Description of drawings
Fig. 1 is a power flow chart of the present invention;
Fig. 2 is a driving mechanism principle schematic of the present invention.
Embodiment
Referring to Fig. 1,2, large torque stepless speed changer comprises traction-driven two-chamber half toroidal type stepless change unit, fixed shaft gear train and double differential gear train and output changement.Wherein, Two-chamber half toroidal type stepless change unit comprises 2 input awl dishes (4a, 4b), 2 outputs awl dish (6a, 6b) and 4 power transmission rollers (5); Form a semi-ring face die cavity by input awl dish (4a) and output awl dish (6a), 2 power transmission rollers (5) symmetrically distribute in this die cavity; Likewise, form a semi-ring face die cavity by input awl dish (4b) and output awl dish (6b), 2 power transmission rollers (5) symmetrically distribute in this die cavity; Fixed shaft gear train is made up of first gear (7), second gear (8), first countershaft (9), second clutch (10), second countershaft (11), the 3rd gear (12), the 4th gear (13), the 5th gear (14); Double differential gear train comprises first internal gear (29), secondary annulus (28), first planet wheel (15), second planet wheel (16), three-clutch (30) and planet carrier (31); The output changement is made up of the 6th gear (18), the 3rd main shaft (17), four clutches (19), four main (20), the 7th gear (21), octadentate wheel (23), output shaft (22), the 5th clutch (24), the 5th main shaft (25), the 9th gear (26), reverse wheel (27).The power of motor is divided into two-part behind input shaft (1), first clutch (2) and first main shaft (3): a part is passed to planet carrier (31) through second main shaft (32), and another part is passed to first internal gear (29) through first gear (7), second gear (8), first countershaft (9), second clutch (10), second countershaft (11), the 3rd gear (12), the 4th gear (13), the 5th gear (14) of input awl dish (4a, 4b), power transmission roller (5), output awl dish (6a, 6b) and the fixed shaft gear train of two-chamber half toroidal type stepless change unit; This two-part power meets at double differential gear train; Export from secondary annulus (28); Flow through the 3rd main shaft (17), the four clutches (19) that engages, four main (20), the 7th gear (21), octadentate wheel (23), through the reverse output of output shaft (22), or the 3rd main shaft (17) of flowing through, the 6th gear (18), reverse wheel (27), the 9th gear (26), the 5th main shaft (25); The 5th clutch (24) that engages is exported through output shaft (22) forward.
The selection model is the input power that the diesel engine of YC6A200L-T20 provides stepless speed variator of the present invention; Wherein the nominal power of diesel engine is 148KW; Rated engine speed 2200r/min, Maximum Torque 730
.The modulus of double differential gear train is 4.5mm; The number of teeth of first internal gear (29), secondary annulus (28) is followed successively by
,
, and the number of teeth of first planet wheel (15), second planet wheel (16) is followed successively by
,
.The high efficiency velocity ratio of two-chamber half toroidal type stepless change unit
.The velocity ratio of fixed shaft gear train
; Modulus is 6mm, and the number of teeth of first gear (7), second gear (8), the 3rd gear (12), the 4th gear (13), the 5th gear (14) is followed successively by
,
,
,
,
.The modulus of changement is 8 mm, and the number of teeth of the 6th gear (18), the 7th gear (21), octadentate wheel (23), the 9th gear (26), reverse wheel (27) is followed successively by
,
,
,
,
.
Engage and second clutch (10) breaks off and do not consider under the situation of energy loss in the gear transmission that the output speed of double differential gear train equals the output speed of motor at first clutch (2), three-clutch (30), realize permanent high speed operation.
Engage and under the situation that three-clutch (30) breaks off, the output speed of double differential gear train changes with the change of two-chamber half toroidal type stepless change unit velocity ratio at first clutch (2), second clutch (10).In the supposition transmission system, do not have under the prerequisite of energy loss, try to achieve through setting up double differential gear train energy conservation and equalising torque:
.During as
; Two-chamber half toroidal type stepless change unit slows down and exports;
shows that motor provides 73% of power to be passed to double differential gear train through two-chamber half toroidal type stepless change unit, and 27% is passed to double differential gear train through second main shaft (32); During as
; Two-chamber half toroidal type stepless change unit speedup output;
shows that motor provides 92% of power to be passed to double differential gear train through two-chamber half toroidal type stepless change unit, and 8% is passed to double differential gear train through second main shaft (32).Owing to mostly be in deceleration regime during engineer machinery operation, the stepless speed variator of therefore designing can bear more powerful transmission.
Discuss when first clutch (2), second clutch (10) engaging and during three-clutch (30) disconnection again, two-chamber half toroidal type stepless change unit and second main shaft (32) are born the situation of the input torque that motor provides.In the supposition transmission system, do not have under the prerequisite of energy loss, try to achieve through setting up double differential gear train energy conservation and equalising torque:
.Likewise; The dead axle system analyzed:
; Because the 5th gear (14) of fixed shaft gear train and first internal gear (29) of double differential gear train are fixed together, therefore
arranged.Comprehensive above-mentioned moment equality then has
.Under the prerequisite of disregarding two-chamber half toroidal type stepless change unit transmission efficiency loss, the moment of torsion satisfied
of input awl dish (4) and output awl dish (6).Because first gear (7) and output awl dish (6) are fixed together, and therefore
are arranged.Simultaneous
,
and
then have
.During as
;
shows that 73% of input torque that motor provides born by two-chamber half toroidal type stepless change unit, and 27% is born by second main shaft (32).Owing to mostly be in deceleration regime during engineer machinery operation, the stepless speed variator of therefore designing can bear the transmission than high pulling torque.
At last; Stepless speed variator of the present invention is satisfying under the interval situation of the efficient velocity ratio set in geometric parameter such as modulus that above-mentioned fixed shaft gear train, double differential gear train and output changement set, the number of teeth and two-chamber half toroidal type stepless change unit, calculates that the velocity ratio of this inventing type stepless speed variator is interval to be
.Therefore, this inventing type stepless speed variator can be realized high pulling torque output, satisfies the demand of engineering machinery to high pulling torque.
Claims (3)
1. the power dividing stepless speed variator of a transmitting large torque is made up of two-chamber half toroidal type stepless change unit, fixed shaft gear train, double differential gear train and output changement, and wherein two-chamber half toroidal type stepless change unit comprises input awl dish (4), power transmission roller (5) and output awl dish (6); Fixed shaft gear train is made up of first gear (7), second gear (8), first countershaft (9), second clutch (10), second countershaft (11), the 3rd gear (12), the 4th gear (13) and the 5th gear (14); Double differential gear train comprises first internal gear (29), secondary annulus (28), first planet wheel (15), second planet wheel (16), three-clutch (30) and planet carrier (31); The output changement is made up of the 6th gear (18), the 3rd main shaft (17), four clutches (19), four main (20), the 7th gear (21), octadentate wheel (23), output shaft (22), the 5th clutch (24), the 5th main shaft (25), the 9th gear (26), reverse wheel (27); It is characterized in that: input power is divided the two-way transmission; Wherein one the tunnel be passed to the planet carrier (31) of double differential gear train via first main shaft (3) and second main shaft (32), another road is delivered to first internal gear (29) of double differential gear train through two-chamber half toroidal type stepless change unit, fixed shaft gear train; The two-way through-put power is converged in double differential gear train, is exported by secondary annulus (28); When second clutch (10) disconnection, when three-clutch (30) engages, the permanent output at a high speed of stepless speed variator, when second clutch (10) joint, when three-clutch (30) breaks off, stepless speed variator is realized permanent low speed or is become the output of slowing down.
2. stepless speed variator according to claim 1 is characterized in that: the double differential gear train and second main shaft (32), two-chamber half toroidal type stepless change unit, the fixed shaft gear train that play the power flow concentration effect form a closed-loop system; For fear of the inner power cycle that takes place of closed-loop system, guarantee the inner realization of locking system power dividing, improve the transmission efficiency of system, the velocity ratio of fixed shaft gear train is necessary for negative value, and the outer gearing number that promptly requires this fixed shaft gear train middle gear is an odd number.
3. stepless speed variator according to claim 1; It is characterized in that: the product of double differential gear train first internal gear (29), second planet wheel (16) number of teeth is less than the product of secondary annulus (28), first planet wheel (15) number of teeth; This condition make double differential gear train planet carrier (31) and first internal gear (29) input torque in the same way; Thereby the size that guarantees double differential gear train secondary annulus (28) output torque is the big or small sum of planet carrier (31) and first internal gear (29) input torque, and the input torque of direction and planet carrier (31) and first internal gear (29) is reverse.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011102778979A CN102338200A (en) | 2011-09-19 | 2011-09-19 | High-torque continuously variable transmission |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011102778979A CN102338200A (en) | 2011-09-19 | 2011-09-19 | High-torque continuously variable transmission |
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| Publication Number | Publication Date |
|---|---|
| CN102338200A true CN102338200A (en) | 2012-02-01 |
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|---|---|---|---|
| CN2011102778979A Pending CN102338200A (en) | 2011-09-19 | 2011-09-19 | High-torque continuously variable transmission |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103912644A (en) * | 2014-04-01 | 2014-07-09 | 四川大学 | Single-disc half-toroidal continuously variable transmission |
| CN109747403A (en) * | 2017-11-06 | 2019-05-14 | 本田技研工业株式会社 | Power transmission apparatus for vehicle |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1283758A (en) * | 2000-08-09 | 2001-02-14 | 华南理工大学 | By-pass segmental type automatic stepless machanical speed variator system with bidirectional collection and planetary arrangement |
| CN102146997A (en) * | 2011-04-06 | 2011-08-10 | 四川大学 | Dual-cavity semi-ring surface type power distribution continuously variable transmission |
-
2011
- 2011-09-19 CN CN2011102778979A patent/CN102338200A/en active Pending
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1283758A (en) * | 2000-08-09 | 2001-02-14 | 华南理工大学 | By-pass segmental type automatic stepless machanical speed variator system with bidirectional collection and planetary arrangement |
| CN102146997A (en) * | 2011-04-06 | 2011-08-10 | 四川大学 | Dual-cavity semi-ring surface type power distribution continuously variable transmission |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103912644A (en) * | 2014-04-01 | 2014-07-09 | 四川大学 | Single-disc half-toroidal continuously variable transmission |
| CN103912644B (en) * | 2014-04-01 | 2016-03-16 | 四川大学 | Single-deck semi-ring surface type stepless speed variator |
| CN109747403A (en) * | 2017-11-06 | 2019-05-14 | 本田技研工业株式会社 | Power transmission apparatus for vehicle |
| CN109747403B (en) * | 2017-11-06 | 2021-06-22 | 本田技研工业株式会社 | Power transmission device for vehicle |
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Application publication date: 20120201 |