CN202073998U - Double-cavity semi-ringsurface power dividing continuously variable transmission - Google Patents
Double-cavity semi-ringsurface power dividing continuously variable transmission Download PDFInfo
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- CN202073998U CN202073998U CN2011200961354U CN201120096135U CN202073998U CN 202073998 U CN202073998 U CN 202073998U CN 2011200961354 U CN2011200961354 U CN 2011200961354U CN 201120096135 U CN201120096135 U CN 201120096135U CN 202073998 U CN202073998 U CN 202073998U
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Abstract
The utility model relates to a double-cavity semi-ringsurface power dividing continuously variable transmission which consists of a double-cavity semi-ringsurface continuously variable unit used for traction and driving, a fixed shaft gear train, a differential gear train with two degrees of freedom and a reversing mechanism, wherein the input power is divided into two paths for transmission: one path is transmitted to the central wheel of the differential gear train through a main shaft, the other path is transmitted to the second gear of the differential gear train through the double-cavity semi-ringsurface continuously variable unit and the fixed shaft gear train, and two parts of power are output through a planet carrier after the differential gear train is converged. In the utility model, part of the input torque is born by the second main shaft so that the torque born by the continuously variable unit is reduced; therefore, the mechanism has the capability of transmitting large torque. In design, odd number times of external meshing of the gear in the fixed shaft gear train not only ensures power dividing in a closed system but also ensures the large torque output of the differential gear train. In order to meet the advancing and revering requirements in engineering machinery operation, a reversing mechanism is arranged when the device is in outputting.
Description
Technical field
The utility model relates to the gear in the power train, specifically is exactly stepless speed variator.
Background technique
The existing metal band type stepless speed variator that uses of entrucking is because the restriction of the qualification of intermetallic friction factor and band resistance to tension makes it never obtain breakthrough in the high pulling torque transmission.Compare with metal band type stepless speed variator, towed half toroidal type stepless speed variator is by hauling ability transmitting movement and the power of traction between input awl dish, power transmission roller and output awl dish contact area, greatly improved the friction condition between surface of contact, improved the bearing capacity of half toroidal type stepless speed variator, in being applicable to, big discharge capacity car.Owing to be subjected to 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 engineering machinery work 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 purpose of this utility model just is based on semi-ring face type stepless speed variator a kind of power dividing stepless speed variator is provided, and is suitable for the high pulling torque transmission of engineering machinery demand.
The technical solution that realizes the utility model purpose is: a kind of power dividing stepless speed variator comprises one group of traction-driven two-chamber, half toroidal type stepless change unit, one group of 2K-H type 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 (6a, 6b), 2 outputs awl dish (8a, 8b) and 6 power transmission rollers (7); Binary differential gear train comprises central gear (11), second gear (12), planet wheel (13) and planet carrier (14); Fixed shaft gear train is made up of first gear (9), octadentate wheel (29), first countershaft (28), the 7th gear (26), second reverse wheel (27) and second gear (12); Changement is made up of the 3rd gear (15), the 3rd main shaft (16), second clutch (17), four main (18), the 4th gear (19), the 5th gear (20), output shaft (21), three-clutch (22), the 5th main shaft (23), the 6th gear (24), first reverse wheel (25).The two-way transmission is divided in the power input back of motor, wherein one the tunnel be passed to the central gear (11) of 2K-H type differential gear train via first main shaft (3) and second main shaft (10), another road is delivered to second gear (12) of 2K-H type 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 2K-H type differential gear train, by planet carrier (14) output, realizes forward and reverse rotation of output shaft through changement.
The 2K-H type differential gear train that plays the power flow concentration effect in the stepless speed variator described in the utility model is formed a closed-loop system by first and second main shaft, two-chamber half toroidal type stepless change unit and fixed shaft gear train sealing; The locking system internal power is with power cycle or power dividing performance, if power cycle will strengthen the load of 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 by 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 fixed shaft gear train gear is an odd number in the designed two-chamber half toroidal type power dividing stepless speed variator.
The outer gearing number that stepless speed variator described in the utility model satisfies the fixed shaft gear train gear in design is an odd number, the forward shunting of input power will not only be realized, and the input torque that has guaranteed the 2K-H type differential gear train central gear of power flow concentration effect and second gear in the same way, thereby the output torque size that guarantees 2K-H type differential gear train planet carrier is the input torque size sum of the central gear and second gear, and the input torque of direction and central gear or second gear is reverse.Therefore, designed stepless speed variator has the ability of transmitting large torque.
Stepless speed variator described in the utility model compared with prior art, its remarkable advantage is: time outer gearing of the odd number of fixed shaft gear train has guaranteed that the internal system of sealing realizes power dividing in (1) design, only overcome by half toroidal type stepless speed variator and can not transmit defective, satisfied the demand of engineering machinery high pulling torque than high pulling torque.(2) by the design power distributary mechanism, the transmission efficiency of system and the peak output that system can transmit have been improved.
Description of drawings
Fig. 1 is a power flow chart of the present utility model;
Fig. 2 is a driving mechanism principle schematic of the present utility model;
Fig. 3 is a 2K-H type differential gear train sketch in the driving mechanism of the present utility model.
Embodiment
Referring to Fig. 1,2, two-chamber half toroidal type power dividing stepless speed variator comprises one group of traction-driven two-chamber, half toroidal type stepless change unit, one group of binary 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 (6a, 6b), 2 outputs awl dish (8a, 8b) and 6 power transmission rollers (7), form a semi-ring face die cavity by input awl dish (6a) and output awl dish (8a), 3 power transmission rollers (7) symmetrically distribute in this die cavity; Similarly, form a semi-ring face die cavity by input awl dish (6b) and output awl dish (8b), 3 power transmission rollers (7) symmetrically distribute in this die cavity; Fixed shaft gear train is made up of first gear (9), octadentate wheel (29), first countershaft (28), the 7th gear (26), second reverse wheel (27) and second gear (12); Binary differential gear train comprises central gear (11), second gear (12), planet wheel (13) and planet carrier (14); Changement is made up of the 3rd gear (15), the 3rd main shaft (16), second clutch (17), four main (18), the 4th gear (19), the 5th gear (20), output shaft (21), three-clutch (22), the 5th main shaft (23), the 6th gear (24), first reverse wheel (25).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 central gear (11) through second main shaft (10), and another part is passed to second gear (12) by first gear (9), octadentate wheel (29), first countershaft (28), the 7th gear (26), second reverse wheel (27) of input awl dish (6a, 6b), power transmission roller (7), output awl dish (8a, 8b) and the composition fixed shaft gear train of two-chamber half toroidal type stepless change unit; This two-part power flow concentration is in differential gear train, export from planet carrier (14), the second clutch (17), four main (18), the 4th gear (19), the 5th gear (20) that flow through the 3rd main shaft (16), engage, through oppositely output of output shaft (21), or the 3rd main shaft (16) of flowing through, the 3rd gear (15), first reverse wheel (25), the 6th gear (24), the 5th main shaft (23), the three-clutch (22) that engages is exported through output shaft (21) forward.
Select model to provide the input power of two-chamber half toroidal type power dividing stepless speed variator for the diesel engine of YC6A200L-T20, wherein the nominal power of diesel engine is 148kW, rated engine speed 2200r/min, Maximum Torque 730Nm; The number of teeth of 2K-H type differential gear train second gear (12)
, central gear (11) the number of teeth
And the number of teeth of planet wheel (13)
The high efficiency velocity ratio of two-chamber half toroidal type stepless change unit
, the velocity ratio of fixed shaft gear train
Under the situation of not considering energy loss in the gear transmission, by 2K-H type differential gear train being set up energy conservation and equalising torque is tried to achieve: the velocity ratio when two-chamber half toroidal type stepless change unit
The time, the input power on 2K-H type differential gear train second gear (12)
With the input power on the central gear (11)
The ratio
, the input torque of second gear (12)
And the input torque of central gear (11)
Ratio be
Velocity ratio when two-chamber half toroidal type stepless change unit
The time, the input power on 2K-H type differential gear train second gear (12)
With the input power on the central gear (11)
The ratio
, the input torque of second gear (12)
And the input torque of central gear (11)
Ratio be
Know by Fig. 2, at the velocity ratio of fixed shaft gear train
The time, then the input torque of awl dish (8) is exported in two-chamber half toroidal type power dividing stepless change unit
Input torque with second main shaft (10)
Ratio be
Therefore, at the velocity ratio of two-chamber half toroidal type power dividing stepless change unit
The time, the power by two-chamber half toroidal type power dividing stepless change unit transmission only is equivalent to by half toroidal type stepless change unit transmitted power
, the moment of torsion by two-chamber half toroidal type power dividing stepless change unit transmission only is equivalent to by half toroidal type stepless change unit transmitting torque
In like manner, when the velocity ratio of two-chamber half toroidal type power dividing stepless change unit
The time, the power by two-chamber half toroidal type power dividing stepless change unit transmission only is equivalent to by half toroidal type stepless change unit transmitted power
, the moment of torsion by two-chamber half toroidal type power dividing stepless change unit transmission only is equivalent to by half toroidal type stepless change unit transmitting torque
Therefore, this two-chamber half toroidal type power dividing stepless speed variator has overcome the defective that single chamber half toroidal type stepless speed variator transmitted power is subjected to the restriction of the traction transmitting torque limit to a great extent, satisfies the demand of engineering machinery field to high pulling torque.
Claims (3)
1. two-chamber half toroidal type power dividing stepless speed variator is made up of two-chamber half toroidal type stepless change unit, fixed shaft gear train, 2K-H type differential gear train and changement, and wherein two-chamber half toroidal type stepless change unit comprises input awl dish (6), power transmission roller (7) and output awl dish (8); Binary differential gear train comprises central gear (11), second gear (12), planet wheel (13) and planet carrier (14); Fixed shaft gear train is made up of first gear (9), octadentate wheel (29), first countershaft (28), the 7th gear (26), second reverse wheel (27) and second gear (12); Changement is made up of the 3rd gear (15), the 3rd main shaft (16), second clutch (17), four main (18), the 4th gear (19), the 5th gear (20), output shaft (21), three-clutch (22), the 5th main shaft (23), the 6th gear (24), first reverse wheel (25); It is characterized in that: input power is divided the two-way transmission, wherein one the tunnel be passed to the central gear (11) of 2K-H type differential gear train via first main shaft (3) and second main shaft (10), another road is delivered to second gear (12) of 2K-H type 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 2K-H type differential gear train, is exported by planet carrier (14).
2. two-chamber half toroidal type power dividing stepless speed variator according to claim 1, it is characterized in that: the 2K-H type differential gear train that plays the power flow concentration effect is formed a closed-loop system by first main shaft (3), two-chamber half toroidal type stepless change unit, fixed shaft gear train and second main shaft (10) sealing; 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. two-chamber half toroidal type power dividing stepless speed variator according to claim 1, it is characterized in that: the velocity ratio of fixed shaft gear train is a negative value, except realizing the shunting of locking system internal power, also make 2K-H type differential gear train central gear (11) and second gear (12) input torque in the same way, the size that has guaranteed 2K-H type differential gear train planet carrier (14) output torque is the big or small sum of central gear (11) and second gear (12) input torque, and the input torque of direction and central gear (11) and second gear (12) is reverse.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011200961354U CN202073998U (en) | 2011-04-06 | 2011-04-06 | Double-cavity semi-ringsurface power dividing continuously variable transmission |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011200961354U CN202073998U (en) | 2011-04-06 | 2011-04-06 | Double-cavity semi-ringsurface power dividing continuously variable transmission |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202073998U true CN202073998U (en) | 2011-12-14 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2011200961354U Expired - Lifetime CN202073998U (en) | 2011-04-06 | 2011-04-06 | Double-cavity semi-ringsurface power dividing continuously variable transmission |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202073998U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102146997A (en) * | 2011-04-06 | 2011-08-10 | 四川大学 | Dual-cavity semi-ring surface type power distribution continuously variable transmission |
| CN105276110A (en) * | 2015-07-29 | 2016-01-27 | 四川大学 | Self-rotation-free traction type stepless speed changer |
-
2011
- 2011-04-06 CN CN2011200961354U patent/CN202073998U/en not_active Expired - Lifetime
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102146997A (en) * | 2011-04-06 | 2011-08-10 | 四川大学 | Dual-cavity semi-ring surface type power distribution continuously variable transmission |
| CN105276110A (en) * | 2015-07-29 | 2016-01-27 | 四川大学 | Self-rotation-free traction type stepless speed changer |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| AV01 | Patent right actively abandoned |
Granted publication date: 20111214 Effective date of abandoning: 20130417 |
|
| RGAV | Abandon patent right to avoid regrant |