CN103982652A

CN103982652A - Power transferring confluence variable-speed transmission device and hydraulic control system thereof

Info

Publication number: CN103982652A
Application number: CN201410248722.9A
Authority: CN
Inventors: 孙保群; 汪韶杰; 常佳男; 陆军; 彭建刚; 夏光; 曲凯宁; 李磊
Original assignee: Hefei University of Technology
Current assignee: Hefei University of Technology
Priority date: 2014-06-06
Filing date: 2014-06-06
Publication date: 2014-08-13
Anticipated expiration: 2034-06-06
Also published as: CN103982652B

Abstract

The invention relates to a power transferring confluence variable-speed driving device and a hydraulic control system thereof. The system is composed of a mechanical transferring transmission mechanism and a hydraulic transmission regulating mechanism, wherein the mechanical transferring transmission mechanism is composed of a transferring mechanism TD and a variable-speed transmission mechanism, the transferring mechanism TD is a planet wheel mechanism, and the hydraulic transmission regulating mechanism is composed of a hydraulic transmission control mechanism and a hydraulic transmission ratio regulating mechanism RC. The mechanical transferring transmission mechanism has an operating characteristic that power which is transferred by two output ends is automatically regulated and distributed according to working resistance borne by the two output ends, the function that input power and output power are continuously variable within a certain range in the process of transmission can be achieved, and the overall efficiency of a transmission system of a vehicle is effectively improved. When the vehicle is started and accelerated quickly, hydraulic transmission shunt transferred power is increased, and is transferred in a large transmission ratio, so that the vehicle can be started smoothly and accelerated quickly.

Description

Power transfer conflux variable speed drive and hydraulic control system thereof

Technical field

The invention belongs to vehicle drive system, be specifically related to a kind of by input power being carried out to realize again power speed changing transmission device and the hydraulic control system thereof that power confluxes after machinery and hydraulic shunting transmission.

Background technique

Variable ratio drive system is the indispensable important component part of vehicle.According to power delivery mode, what modern vehicle routine adopted mainly contains the transmission systems such as mechanical speed change transmission, hydraulic transmission, electric transmission.

Machine driven system is the transmission system forming taking motor as power, with all kinds mechanical mechanism and speed change gear, be characterized in technology maturation, manufacturing process is perfect, cost of production is low, drive system efficiency is high, be widely used, but be difficult to further effectively be promoted with the Optimized Matching of motor.

Hydraulic Power Transmission System is called again hydrostatic transmission system, with oil hydraulic pump, oil hydraulic motor, hydraulic servo control and the power transmission system of carrying out the compositions such as actuation element and hydraulic pipe line, be characterized in by hydraulic way transferring power, system mechanics transmission part is few, simple in structure, velocity ratio excursion is large and be easy to regulate, operate steadily, vibration noise is little, it is relatively easy to control and can realize electrodeless variable-speed, but transmission requirement adaptability unsuitable too high as the oil hydraulic motor working speed of driving element, during to the middle and high fast driving cycle of vehicle is relatively poor.

Electric drive system is the transmission system taking electric power as the energy, with motor with simple mechanical mechanism composition, be characterized in that drive system structure is relatively simple, vibration noise and disposal of pollutants little, but under current technical specifications, use the vehicle course continuation mileage of electric drive system limited, be difficult to meet consumers' demand.

In addition, also have oil electric mixed dynamic transmission, the transmission of stroke length increasing electricity oil hybrid, the transmission of fuel-electro double mode formula etc. to mix or compound power transmission system, wherein, obviously but control and require high, system complex, involve great expense, all there is the limited problem of the course continuation mileage identical with electric drive system with fuel-electro double mode formula transmission system in stroke length increasing electricity oil hybrid transmission system to oil electric mixed dynamic transmission system energy-saving effect.

Summary of the invention

The invention provides a kind of power transfer conflux variable speed drive and hydraulic control system thereof, its objective is the power in order more effectively to utilize motor output, make full use of and bring into play that mechanical speed change transmission efficiency is high, hydraulic transmission velocity ratio excursion is large and is convenient to the feature regulating, make that vehicle drive system is relatively simple, speed change is easy and more efficient, energy-conservation and environmental protection.

Conflux variable speed drive and hydraulic control system thereof of power transfer is made up of mechanical transfer driving mechanism and hydraulic transmission controlling mechanism; Described mechanical transfer driving mechanism is made up of transfer gear TD and variable transmission mechanism, and described hydraulic transmission controlling mechanism is made up of than controlling mechanism RC hydraulic pressure drive control system mechanism and hydraulic transmission;

The size of two suffered working resistances of output terminal of described transfer gear TD automatically regulates and distributes shunted power, make transmission system there is the function of carrying out within the specific limits stepless speed regulation, realize the optimum Match of input power and outputting power in transmission process, effectively the overall efficiency of lifting vehicle transmission system;

Described hydraulic pressure drive control system mechanism comprises oil hydraulic pump HB, oil hydraulic motor HM, and two output terminals of transfer gear TD are respectively the input end of oil hydraulic pump HB, oil hydraulic motor HM;

Described hydraulic transmission than controlling mechanism adopt independently, totally enclosed internal hydraulic pressure oil circulation, can effectively avoid sharing hydraulic oil liquid with hydraulic transmission and control system time, easily because oil contamination affects hydraulic transmission than the reliability of adjustment module and control accuracy;

In the time of vehicle start and anxious acceleration, utilize hydraulic transmission can realize the feature of big speed ratio than controlling mechanism, shunt the power transmitting and transmit with big speed ratio by strengthening hydraulic transmission, can make the smooth-going starting of vehicle and improve fast the speed of a motor vehicle;

When travelling at a relatively high speed at vehicle and car speed and running resistance change when little, utilize the performance characteristic of mechanical transfer driving mechanism and the work characteristics of hydraulic pressure drive control system mechanism, system is worked in mechanically operated mode separately, effectively improve overall system transmission efficiency.

In described mechanical transfer driving mechanism:

Transfer gear TD is planetary wheeling mechanism, comprises power input shaft 1, planet carrier 2, sun gear 3, plural planet wheel 4, ring gear 5, the first output shaft 6 and the second output shaft 7; Wherein the second output shaft 7 is tubular axis, and described the first output shaft 6 is coaxially plugged in the second output shaft 7, and two ends are overhanging; Described the first output shaft 6 and the second output shaft 7 are respectively as the input shaft of variable transmission mechanism;

Variable transmission mechanism comprises the first output shaft 6, the second output shaft 7, reverse gear shaft 10, jack shaft 15 and unidirectional locking device 20;

On described the second output shaft 7, empty set is provided with the driving gear 8 that reverses gear, a gear driving gear 12 and two gear driving gears 14 successively;

Described reversing gear is provided with reverse gear synchronizer 11 between driving gear 8 and a described gear driving gear 12; Described reverse gear synchronizer 11 can move axially to R position or N position along the second output shaft 7 in company with synchronous the rotation also of the second output shaft 7, in the time that moving to R position, reverse gear synchronizer 11 reverse gear driving gear 8 and the second output shaft 7 can be locked and make to reverse gear driving gear 8 in company with the second output shaft 7 synchronous rotaries, will reverse gear driving gear 8 and the second output shaft 7 releases in the time that reverse gear synchronizer 11 moves to N position;

Between a described gear driving gear 12 and two gear driving gears 14, be provided with forward gear synchronizer 13; Described forward gear synchronizer 13 can move axially to I position or N position or II position along the second output shaft 7 in company with synchronous the rotation also of the second output shaft 7; In the time that moving to I position, forward gear synchronizer 13 can lock and make a gear driving gear 12 in company with the second output shaft 7 synchronous rotaries one gear driving gear 12 and the second output shaft 7; In the time that moving to II position, forward gear synchronizer 13 can lock and make two gear driving gears 14 in company with the second output shaft 7 synchronous rotaries two gear driving gears 14 and the second output shaft 7; In the time that forward gear synchronizer 13 moves to N position, one gear driving gear 12 and two is kept off to driving gears 14 simultaneously and the second output shaft 7 releases;

The driven gear 9 that reverses gear is fixed on reverse gear shaft 10; The two ends swivel bearing of described reverse gear shaft 10 is upper in system casing KT, described in the driven gear 9 that reverses gear often engage with reverse gear driving gear 8 and a gear driving gear 12 simultaneously;

On described jack shaft 15, be provided with successively main deceleration driving gear 16, a gear driven gear 17 and two gear driven gears 18;

Described main deceleration driving gear 16 often engages with main deceleration driven gear 22, and a described gear driven gear 17 often engages with a gear driving gear 12, and described two gear driven gears 18 often engage with two gear driving gears 14; Described main deceleration driven gear 22 is fixedly arranged on the housing of differential assembly 23; Described unidirectional locking device 20 comprises input end and output terminal, the output terminal of unidirectional locking device 20 is fixedly arranged on the one end with the jack shaft 15 of the adjacent side of two gear driven gears 18, the input end of unidirectional locking device 20 is fixedly arranged on one end of oil hydraulic motor axle 21, between described two gear driven gears 18 and described unidirectional locking device 20, is provided with the locking synchronization device 19 that reverses gear; The described locking synchronization device 19 that reverses gear rotates and can move axially to R position or N position along jack shaft 15 with jack shaft 15 is synchronous, in the time that the locking synchronization device 19 that reverses gear moves to R position, the input end of unidirectional locking device 20 is locked on jack shaft 15 and jack shaft 15 is synchronously rotated in company with the input end of unidirectional locking device 20, in the time that the locking synchronization device 19 that reverses gear moves to N position by the input end of unidirectional locking device 20 and jack shaft 15 releases.

In described hydraulic transmission controlling mechanism:

Hydraulic pressure drive control system mechanism comprises oil hydraulic pump HB, oil hydraulic motor HM, the first one-way valve SV1, the first accumulator AC1, the first solenoid valve EV1, hand control valve HV and hydraulic pressure oil groove TA; Described oil hydraulic pump HB is unidirectional change displacement volume formula oil hydraulic pump, and described oil hydraulic motor HM is two-way change displacement volume formula oil hydraulic motor;

The oil drain out O of described oil hydraulic pump HB is being communicated with the oil inlet P of the first one-way valve SV1, the oil inlet P of hydraulic fluid port A, the first solenoid valve EV1 and the filler opening a of lubricating oil flow controlling unit LC of the first accumulator AC1 simultaneously;

The drain tap T of the oil inlet P of described oil hydraulic pump HB, drain tap T, the hand control valve HV of the first one-way valve SV1 is all being communicated with hydraulic pressure oil groove TA;

The oil outlet A of described the first solenoid valve EV1 is being communicated with the oil inlet P of hand control valve HV, and the first hydraulic fluid port A of hand control valve HV is being communicated with the first hydraulic fluid port A of described oil hydraulic motor HM, and the second hydraulic fluid port B of hand control valve HV is being communicated with the second hydraulic fluid port B of oil hydraulic motor HM;

Described hydraulic transmission is a totally enclosed hydraulic servo control and actuator than controlling mechanism RC, comprises motor EM, electric oil pump DB, the second one-way valve SV2, the 3rd one-way valve SV3, the second accumulator AC2, the second solenoid valve EV2, the 3rd solenoid valve EV3, the 4th solenoid valve EV4, the first oil cylinder HC1, the second oil cylinder HC2 and hydraulic control fuel tank TC;

The output shaft of described motor EM is connecting the rotor of electric oil pump DB;

The oil drain out O of described electric oil pump DB is being communicated with the oil inlet P of described the second one-way valve SV2 and the oil inlet P of the 3rd one-way valve SV3 simultaneously; The oil outlet A of described the 3rd one-way valve SV3 is being communicated with the oil inlet P of the first hydraulic fluid port A, the 3rd solenoid valve EV3 and the oil inlet P of the 4th solenoid valve EV4 of the second solenoid valve EV2 simultaneously; The second hydraulic fluid port B of described the second solenoid valve EV2 is being communicated with the hydraulic fluid port A of described the second accumulator AC2; The hydraulic fluid port A of described the 3rd solenoid valve EV3 is being communicated with the hydraulic fluid port A of the second oil cylinder HC2 rodless cavity; The hydraulic fluid port A of described the 4th solenoid valve EV4 is being communicated with the hydraulic fluid port A of the first oil cylinder HC1 rodless cavity;

The drain tap T of the oil inlet P of described electric oil pump DB, the drain tap T of described the second one-way valve SV2, the 3rd solenoid valve EV3, the drain tap T of the 4th solenoid valve EV4 are all being communicated with hydraulic control fuel tank TC;

When to the second oil cylinder HC2 fuel feeding, can make its oil cylinder oil-filled, make the discharge capacity that singly turns of oil hydraulic motor HM strengthen simultaneously; In the time of the second oil cylinder HC2 draining, can make the discharge capacity that singly turns of oil hydraulic motor HM reduce; In the time that in the cylinder that maintains the second oil cylinder HC2, oil pressure is constant, can maintenance medium pressure motor HM singly to turn discharge capacity constant;

When to the first oil cylinder HC1 fuel feeding, can make its oil cylinder oil-filled, simultaneously make oil hydraulic pump HB singly turn discharge capacity strengthen; In the time of the first oil cylinder HC1 draining, can make the discharge capacity that singly turns of oil hydraulic pump HB reduce; In the time that in the cylinder that maintains the first oil cylinder HC1, oil pressure is constant, can maintenance medium press pump HB singly to turn discharge capacity constant;

The rotor of one end connecting fluid press pump HB of first output shaft 6 corresponding with hydraulic pressure drive control system mechanism; One end of the jack shaft 15 corresponding with oil hydraulic motor HM is connecting oil hydraulic motor axle 21 by output terminal and the input end of unidirectional locking device 20; Under forward gear operating mode, in the time that the rotating speed of oil hydraulic motor axle 21 is greater than the rotating speed of jack shaft 15, the input end of unidirectional locking device 20 and output terminal locking, make oil hydraulic motor axle 21 lock with jack shaft 15 and synchronize rotation; In the time that the rotating speed of oil hydraulic motor axle 21 is less than the rotating speed of jack shaft 15, the input end of unidirectional locking device 20 and output terminal release make oil hydraulic motor axle 21 and jack shaft 15 releases simultaneously;

Described the first solenoid valve EV1 and the second solenoid valve EV2 are 22 logical electromagnetic switch valves; Described hand control valve HV is 3 the 4 logical selector valves by manual control; Described the 3rd solenoid valve EV3 and the 4th solenoid valve EV4 are 33 logical line pressure ratio solenoid valves, or 3 the 3 wide modulated pressure ratio solenoid valves of promoting blood circulation.

Transfer gear TD has three kinds of structural designs:

The transfer gear TD of the first structure: power input shaft 1 is connecting planet carrier 2; On described planet carrier 2, be installed with plural planet wheel shaft, each planet wheel shaft upper sliding sleeve is provided with planet wheel 4, and plural planet wheel 4 all between sun gear 3 and ring gear 5, and often engages with sun gear 3 and ring gear 5 simultaneously; The wheel shaft of sun gear 3 is connecting the one end as the first output shaft 6 of the first output terminal of transfer gear TD; Described ring gear 5 is connecting the one end as the second output shaft 7 of the second output terminal of transfer gear TD.

The transfer gear TD of the second structure: power input shaft 1 is connecting ring gear 5; The wheel shaft of described sun gear 3 is connecting the one end as the first output shaft 6 of the first output terminal of transfer gear TD; Described planet carrier 2 is connecting the one end as the second output shaft 7 of the second output terminal of transfer gear TD; On described planet carrier 2, be installed with plural planet wheel shaft, each planet wheel shaft upper sliding sleeve is provided with planet wheel 4, and plural planet wheel 4 all between sun gear 3 and ring gear 5, and often engages with sun gear 3 and ring gear 5 simultaneously.

The transfer gear TD of the third structure: power input shaft 1 is connecting the wheel shaft of sun gear 3; Described planet carrier 2 is connecting the one end as the first output shaft 6 of the first output terminal of transfer gear TD; On described planet carrier 2, be installed with plural planet wheel shaft, each planet wheel shaft upper sliding sleeve is provided with planet wheel 4, and plural planet wheel 4 all between sun gear 3 and ring gear 5, and often engages with sun gear 3 and ring gear 5 simultaneously; Described ring gear 5 is connecting the one end as the second output shaft 7 of the second output terminal of transfer gear TD.

Related content in technique scheme is explained as follows:

1. in technique scheme, described lubricating oil flow controlling unit LC is made up of flow control valve CV and throttle valve TH, the filler opening a of lubricating oil flow controlling unit LC is being communicated with the oil drain out O of oil hydraulic pump HB, oil outlet b is being communicated with lubrication oil circuit interface LUO, in parallel flow control valve CV and throttle valve TH between the filler opening a of lubricating oil flow controlling unit LC and oil outlet b, wherein: the hydraulic fluid flow rate by flow control valve CV is along with the oil pressure of its oil inlet P raises and reduces gradually until be 0, hydraulic fluid flow rate by throttle valve TH is along with the oil pressure of its oil inlet P raises and increases gradually, but when the oil pressure of its oil inlet P is elevated to after certain value, the speed that hydraulic fluid flow rate by throttle valve TH increases slows down and constant flow of convergence gradually,

2. in technique scheme, described hydraulic transmission than adjustment module be one formed by motor EM, electric oil pump DB, the second one-way valve SV2, the 3rd one-way valve SV3, the second accumulator AC2, the second solenoid valve EV2, the 3rd solenoid valve EV3, the 4th solenoid valve EV4, the first oil cylinder HC1, the second oil cylinder HC2 and hydraulic control fuel tank TC independently, totally enclosed hydraulic transmission is than regulating system, for hydraulic transmission than the hydraulic oil liquid regulating in hydraulic transmission than adjustment module inner loop;

3. in technique scheme, described the first oil cylinder HC1 is fixedly installed with respect to the stator of oil hydraulic pump HB, can have two kinds of implementations:

(1) described the first oil cylinder HC1 is fixedly arranged on the stator of described oil hydraulic pump HB;

(2) stator of described the first oil cylinder HC1 and described oil hydraulic pump HB is fixedly arranged on described system casing KT simultaneously;

4. in technique scheme, described the second oil cylinder HC2 is fixedly installed with respect to the stator of oil hydraulic motor HM, can have two kinds of implementations:

(1) described the second oil cylinder HC2 is fixedly arranged on the stator of described oil hydraulic motor HM;

(2) stator of described the second oil cylinder HC2 and described oil hydraulic motor HM is fixedly arranged on described system casing KT simultaneously;

5. in technique scheme, described motor EM and described electric oil pump DB are fixedly installed and can have three kinds of implementations with respect to system casing KT:

(1) stator of described motor EM is fixedly arranged on the stator of described electric oil pump DB, and described electric oil pump DB is fixedly arranged on system casing KT;

(2) stator of described electric oil pump DB is fixedly arranged on the stator of described motor EM, and the stator of described motor EM is fixedly arranged on system casing KT;

(3) stator of the stator of described electric oil pump DB and described motor EM is fixedly arranged on system casing KT simultaneously.

Owing to having used technique scheme, the present invention has following advantages and effect:

1. conflux variable speed drive and hydraulic control system thereof of a kind of power transfer involved in the present invention, the mechanical transfer device adopting has the performance characteristic that the power automatically two output terminals shunted according to the size of two suffered working resistances of output terminal regulates and distributes, can realize the optimum Match of input power and outputting power in transmission process, effectively the overall efficiency of lifting vehicle transmission system;

2. conflux variable speed drive and hydraulic control system thereof of a kind of power transfer involved in the present invention, utilize mechanical transfer module to there is the performance characteristic that can automatically regulate the rotating speed of two output terminals according to the size of the suffered working resistance of two output terminal, can make transmission system there is the function of carrying out within the specific limits stepless speed regulation;

3. conflux variable speed drive and hydraulic control system thereof of a kind of power transfer involved in the present invention, in the time of vehicle start and anxious acceleration, can make full use of the feature that hydraulic transmission can realize big speed ratio, by strengthening the power of hydraulic transmission shunting transmission and transmitting with big speed ratio, can make the smooth-going starting of vehicle and improve fast the speed of a motor vehicle;

4. conflux variable speed drive and hydraulic control system thereof of a kind of power transfer involved in the present invention, travel at a relatively high speed and car speed and running resistance change when little at vehicle, can make full use of the performance characteristic of mechanical transfer device and the work characteristics of oil hydraulic pump, system is worked in mechanically operated mode separately, effectively improve overall system transmission efficiency;

5. conflux variable speed drive and hydraulic control system thereof of a kind of power transfer involved in the present invention, the hydraulic transmission regulating for the discharge capacity of oil hydraulic pump and oil hydraulic motor than adjustment module adopt independently, totally enclosed internal hydraulic pressure oil circulation, can effectively avoid sharing hydraulic oil liquid with hydraulic transmission and control system time, easily because oil contamination affects hydraulic transmission than the reliability of adjustment module and control accuracy;

6. conflux variable speed drive and hydraulic control system thereof of a kind of power transfer involved in the present invention, flow control valve CV and throttle valve TH in hydraulic transmission and control module, are adopted, under flow control valve CV and the common adjusting of throttle valve TH, can regulate and there is peak rate of flow restriction the fluid flow for system lubrication and cooling, can effectively avoid the fluid flow of lubrication and cooling to exceed actual demand and cause overall system Efficiency Decreasing, and because of the impact of the shunting action for system lubrication and cooling fluid on Hydraulic Power Transmission System working pressure.

Brief description of the drawings

Fig. 1 is conflux variable speed drive and hydraulic control system theory of constitution figure thereof of power transfer of the present invention.

Fig. 2 is the conflux first replacement scheme schematic diagram that is in transmission connection of mechanical transfer module in variable speed drive and hydraulic control system thereof of power transfer of the present invention.

Fig. 3 is the conflux second replacement scheme schematic diagram that is in transmission connection of mechanical transfer module in variable speed drive and hydraulic control system thereof of power transfer of the present invention.

Code name in figure: power input shaft 1, planet carrier 2, sun gear 3, planet wheel 4, ring gear 5, the first output shaft 6, the second output shaft 7, driving gear 8 reverses gear, driven gear 9 reverses gear, reverse gear shaft 10, reverse gear synchronizer 11, one gear driving gear 12, forward gear synchronizer 13, two gear driving gears 14, jack shaft 15, main deceleration driving gear 16, one gear driven gear 17, two gear driven gears 18, locking synchronization device 19 reverses gear, unidirectional locking device 20, oil hydraulic motor axle 21, main deceleration driven gear 22, differential assembly 23, oil hydraulic pump HB, oil hydraulic motor HM, electric oil pump DB, the first one-way valve SV1, the second one-way valve SV2, the 3rd one-way valve SV3, the first accumulator AC1, the second accumulator AC2, flow control valve CV, throttle valve TH, the first solenoid valve EV1, the second solenoid valve EV2, the 3rd solenoid valve EV3, the 4th solenoid valve EV4, hand control valve HV, the first oil cylinder HC1, the second oil cylinder HC2, motor EM, hydraulic pressure oil groove TA, hydraulic control fuel tank TC, system casing KT, transfer gear TD, hydraulic transmission is than adjustment module RC, lubricating oil flow controlling unit LC, lubrication oil circuit interface LUO, input power PI, outputting power PO.

Embodiment

Below in conjunction with accompanying drawing, by embodiment, the present invention is further described.

Embodiment 1:

Referring to Fig. 1, conflux variable speed drive and hydraulic control system thereof of a kind of power transfer is made up of mechanical transfer driving mechanism and hydraulic transmission controlling mechanism; Described mechanical transfer driving mechanism is made up of transfer gear TD and variable transmission mechanism, and described hydraulic transmission controlling mechanism is made up of than controlling mechanism RC hydraulic pressure drive control system mechanism and hydraulic transmission.

In described mechanical transfer driving mechanism:

Transfer gear TD is planetary wheeling mechanism, comprises power input shaft 1, planet carrier 2, sun gear 3, plural planet wheel 4, ring gear 5, the first output shaft 6 and the second output shaft 7.Power input shaft 1 is connecting planet carrier 2; On planet carrier 2, be installed with plural planet wheel shaft, each planet wheel shaft upper sliding sleeve is provided with planet wheel 4, and plural planet wheel 4 all between sun gear 3 and ring gear 5, and often engages with sun gear 3 and ring gear 5 simultaneously; The wheel shaft of sun gear 3 is connecting the one end as the first output shaft 6 of the first output terminal of transfer gear TD; Ring gear 5 is connecting the one end as the second output shaft 7 of the second output terminal of transfer gear TD.The second output shaft 7 is tubular axis, and described the first output shaft 6 is coaxially plugged in the second output shaft 7, and two ends are overhanging; Described the first output shaft 6 and the second output shaft 7 are respectively as the input shaft of variable transmission mechanism;

Keep off between driving gear 12 and be provided with reverse gear synchronizer 11 at the driving gear 8 and described that reverses gear; Reverse gear synchronizer 11 can move axially to R position or N position along the second output shaft 7 in company with synchronous the rotation also of the second output shaft 7, in the time that moving to R position, reverse gear synchronizer 11 reverse gear driving gear 8 and the second output shaft 7 can be locked and make to reverse gear driving gear 8 in company with the second output shaft 7 synchronous rotaries, will reverse gear driving gear 8 and the second output shaft 7 releases in the time that reverse gear synchronizer 11 moves to N position.

Between a gear driving gear 12 and two gear driving gears 14, forward gear synchronizer 13 is installed; Forward gear synchronizer 13 can move axially to I position or N position or II position along the second output shaft 7 in company with synchronous the rotation also of the second output shaft 7; In the time that moving to I position, forward gear synchronizer 13 can lock and make a gear driving gear 12 in company with the second output shaft 7 synchronous rotaries one gear driving gear 12 and the second output shaft 7; In the time that moving to II position, forward gear synchronizer 13 can lock and make two gear driving gears 14 in company with the second output shaft 7 synchronous rotaries two gear driving gears 14 and the second output shaft 7; In the time that forward gear synchronizer 13 moves to N position, one gear driving gear 12 and two is kept off to driving gears 14 simultaneously and the second output shaft 7 releases.

The driven gear 9 that reverses gear is fixedly installed on reverse gear shaft 10; The two ends swivel bearing of reverse gear shaft 10 is upper in system casing KT, and the driven gear 9 that reverses gear often engages with reverse gear driving gear 8 and a gear driving gear 12 simultaneously.

On described jack shaft 15, be installed with successively main deceleration driving gear 16, a gear driven gear 17 and two gear driven gears 18.

Described main deceleration driving gear 16 often engages with main deceleration driven gear 22, and a described gear driven gear 17 often engages with a gear driving gear 12, and described two gear driven gears 18 often engage with two gear driving gears 14; Described main deceleration driven gear 22 is fixedly arranged on the housing of differential assembly 23; Described unidirectional locking device 20 comprises input end and output terminal, and the output terminal of unidirectional locking device 20 is fixedly arranged on the one end with the jack shaft 15 of the adjacent side of two gear driven gears 18, and the input end of unidirectional locking device 20 is fixedly arranged on one end of oil hydraulic motor axle 21.Between two gear driven gears 18 and described unidirectional locking device 20, the locking synchronization device 19 that reverses gear is installed; The locking synchronization device 19 that reverses gear rotates and can move axially to R position or N position along jack shaft 15 with jack shaft 15 is synchronous, in the time that the locking synchronization device 19 that reverses gear moves to R position, the input end of unidirectional locking device 20 is locked on jack shaft 15 and jack shaft 15 is synchronously rotated in company with the input end of unidirectional locking device 20, in the time that the locking synchronization device 19 that reverses gear moves to N position by the input end of unidirectional locking device 20 and jack shaft 15 releases.

In hydraulic transmission controlling mechanism:

Referring to Fig. 1, hydraulic pressure drive control system mechanism comprises oil hydraulic pump HB, oil hydraulic motor HM, the first one-way valve SV1, the first accumulator AC1, the first solenoid valve EV1, hand control valve HV and hydraulic pressure oil groove TA; Oil hydraulic pump HB is unidirectional change displacement volume formula oil hydraulic pump, and it singly turns discharge capacity can be 0 to carrying out step-less adjustment between maximum pump discharge in discharge capacity.Oil hydraulic motor HM is two-way change displacement volume formula oil hydraulic motor, and it singly turns discharge capacity can be 0 to carrying out step-less adjustment between maximum pump discharge in discharge capacity.

The oil drain out O of described oil hydraulic pump HB is being communicated with the oil inlet P of the first one-way valve SV1, the oil inlet P of hydraulic fluid port A, the first solenoid valve EV1 and the filler opening a of lubricating oil flow controlling unit LC of the first accumulator AC1 simultaneously; The drain tap T of the oil inlet P of oil hydraulic pump HB, drain tap T, the hand control valve HV of the first one-way valve SV1 is all being communicated with hydraulic pressure oil groove TA.

The oil outlet A of described the first solenoid valve EV1 is being communicated with the oil inlet P of hand control valve HV, and the first hydraulic fluid port A of hand control valve HV is being communicated with the first hydraulic fluid port A of described oil hydraulic motor HM, and the second hydraulic fluid port B of hand control valve HV is being communicated with the second hydraulic fluid port B of oil hydraulic motor HM.

Hydraulic pressure drive control system mechanism also comprises lubricating oil flow controlling unit LC, comprises flow control valve CV and throttle valve TH; Flow control valve CV is the internal control formula flow control valve that leaks, the single hole throttle valve that throttle valve TH is big L/D ratio.The filler opening a of lubricating oil flow controlling unit LC is being communicated with the oil inlet P of flow control valve CV and the oil inlet P of throttle valve TH simultaneously, and the oil outlet A of described flow control valve CV and the oil outlet A of throttle valve TH are being communicated with the oil outlet b of lubricating oil flow controlling unit LC simultaneously; Described oil outlet b is being communicated with lubrication oil circuit interface LUO.

Described hydraulic transmission is a totally enclosed hydraulic servo control and actuator than adjustment module RC, comprises motor EM, electric oil pump DB, the second one-way valve SV2, the 3rd one-way valve SV3, the second accumulator AC2, the second solenoid valve EV2, the 3rd solenoid valve EV3, the 4th solenoid valve EV4, the first oil cylinder HC1, the second oil cylinder HC2 and hydraulic control fuel tank TC.

The output shaft of motor EM is connecting the rotor of electric oil pump DB; The oil drain out O of electric oil pump DB is being communicated with the oil inlet P of described the second one-way valve SV2 and the oil inlet P of the 3rd one-way valve SV3 simultaneously; The oil outlet A of described the 3rd one-way valve SV3 is being communicated with the oil inlet P of the first hydraulic fluid port A, the 3rd solenoid valve EV3 and the oil inlet P of the 4th solenoid valve EV4 of the second solenoid valve EV2 simultaneously; The second hydraulic fluid port B of described the second solenoid valve EV2 is being communicated with the hydraulic fluid port A of described the second accumulator AC2; The hydraulic fluid port A of described the 3rd solenoid valve EV3 is being communicated with the hydraulic fluid port A of the second oil cylinder HC2 rodless cavity; The hydraulic fluid port A of described the 4th solenoid valve EV4 is being communicated with the hydraulic fluid port A of the first oil cylinder HC1 rodless cavity.The drain tap T of the oil inlet P of electric oil pump DB, the drain tap T of the second one-way valve SV2, the 3rd solenoid valve EV3, the drain tap T of the 4th solenoid valve EV4 are all being communicated with hydraulic control fuel tank TC.

When to the second oil cylinder HC2 fuel feeding, can make its oil cylinder oil-filled, make the discharge capacity that singly turns of oil hydraulic motor HM strengthen simultaneously; In the time of the second oil cylinder HC2 draining, can make the discharge capacity that singly turns of oil hydraulic motor HM reduce; In the time that in the cylinder that maintains the second oil cylinder HC2, oil pressure is constant, can maintenance medium pressure motor HM singly to turn discharge capacity constant.

When to the first oil cylinder HC1 fuel feeding, can make its oil cylinder oil-filled, simultaneously make oil hydraulic pump HB singly turn discharge capacity strengthen; In the time of the first oil cylinder HC1 draining, can make the discharge capacity that singly turns of oil hydraulic pump HB reduce; In the time that in the cylinder that maintains the first oil cylinder HC1, oil pressure is constant, can maintenance medium press pump HB singly to turn discharge capacity constant.

The rotor of one end connecting fluid press pump HB of first output shaft 6 corresponding with hydraulic pressure drive control system mechanism; One end of the jack shaft 15 corresponding with oil hydraulic motor HM is connecting oil hydraulic motor axle 21 by output terminal and the input end of unidirectional locking device 20; Under forward gear operating mode, in the time that the rotating speed of oil hydraulic motor axle 21 is greater than the rotating speed of jack shaft 15, the input end of unidirectional locking device 20 and output terminal locking, make oil hydraulic motor axle 21 lock with jack shaft 15 and synchronize rotation; In the time that the rotating speed of oil hydraulic motor axle 21 is less than the rotating speed of jack shaft 15, the input end of unidirectional locking device 20 and output terminal release make oil hydraulic motor axle 21 and jack shaft 15 releases simultaneously.

The first solenoid valve EV1 and the second solenoid valve EV2 are 22 logical electromagnetic switch valves; Hand control valve HV is 3 the 4 logical selector valves by manual control; The 3rd solenoid valve EV3 and the 4th solenoid valve EV4 are 33 logical line pressure ratio solenoid valves, or 3 the 3 wide modulated pressure ratio solenoid valves of promoting blood circulation.

The working principle of the present embodiment is as follows:

Vehicle neutral:

When vehicle neutral, reverse gear synchronizer 11 is in N position, forward gear synchronizer 13 is in N position, reverse gear locking synchronization device 19 in N position, the discharge capacity that singly turns of oil hydraulic pump HB is 0, the discharge capacity that singly turns of oil hydraulic motor HM is 0, the first solenoid valve EV1 makes its oil inlet P be communicated with oil outlet A in the 1st valve position, hand control valve HV makes its oil inlet P in the 2nd valve position, the first hydraulic fluid port A, the second hydraulic fluid port B and drain tap T all interconnect, flow control valve CV makes to be communicated with completely between its oil inlet P and oil outlet A in complete on state, motor EM no electric circuit, electric oil pump DB does not work, the second solenoid valve EV2 ends its first hydraulic fluid port A and the second hydraulic fluid port B in the 1st valve position simultaneously, the 3rd solenoid valve EV3 makes its oil inlet P cut-off in the 1st valve position, hydraulic fluid port A is communicated with drain tap T, the 4th solenoid valve EV4 makes its oil inlet P cut-off in the 1st valve position, hydraulic fluid port A is communicated with drain tap T, the first oil cylinder HC1 in cylinder without oil condition, the second oil cylinder HC2 in cylinder without oil condition, power input shaft 1 input power, because two output terminal sun gears 3 and the ring gear of mechanical transfer module TD now are neither tied, mechanical transfer module TD does not form transfer effect, and therefore vehicle maintains state of rest.

The starting of vehicle forward gear and acceleration:

When vehicle is converted to forward gear starting by neutral position state, forward gear synchronizer 13 moves I position, the second output shaft 7 and a gear driving gear 12 are locked, because vehicle is now in the state of rest of starting not yet, vehicle inertia power by driving wheel of vehicle through differential mechanism 23, main deceleration driven gear 22, main deceleration driving gear 16, jack shaft 15, one gear driven gear 17, one gear driving gear 12, forward gear synchronizer 13, the second output shaft 7 forms fixed constraint to ring gear 5, power input shaft 1 forms surely than transmission sun gear 3, but because the discharge capacity that singly turns of oil hydraulic pump HB is 0, make it not form constraint to the first output shaft 6 and sun gear 3, thereby make mechanical transfer module TD not produce shunting gearing, afterwards, hand control valve HV is moved to the 1st valve position, is made its oil inlet P be communicated with the first hydraulic fluid port A, the second hydraulic fluid port B connection drain tap T by the 2nd valve position, the second solenoid valve EV2 energising makes its first hydraulic fluid port A be communicated with the second hydraulic fluid port B, make the fluid that stores in the second accumulator AC2 oil inlet P fuel feeding of the oil inlet P to the 3rd solenoid valve EV3 and the 4th solenoid valve EV4 simultaneously, now, as the oil liquid pressure storing in the second accumulator AC2 is not enough to drive the first oil cylinder HC1 and the second oil cylinder HC2 work, motor EM is switched on, drive electric oil pump DB from hydraulic control fuel tank TC, sucked fluid by its oil inlet P and discharge through oil drain out O, the fluid of being discharged by the oil drain out O of electric oil pump DB is after the oil inlet P and oil outlet A of the 3rd one-way valve SV3, the first hydraulic fluid port A to the second solenoid valve EV2 simultaneously, the oil inlet P fuel feeding of the oil inlet P of the 3rd solenoid valve EV3 and the 4th solenoid valve EV4, the fluid of the first hydraulic fluid port A that is transported to the second solenoid valve EV2 is the hydraulic fluid port A fuel feeding to the second accumulator AC2 through its second hydraulic fluid port B, subsequently, to the 3rd solenoid valve EV3 power at full capacity, make its by the 1st valve position be converted to that the 3rd valve position, oil inlet P are communicated with hydraulic fluid port A, the fluid that makes to be transported to its oil inlet P through hydraulic fluid port A to the second oil cylinder HC2 fuel feeding, make the discharge capacity that singly turns of oil hydraulic motor HM reach maximum value, the 4th solenoid valve EV4 power supply is also strengthened to supply current gradually, make it be converted to gradually the 2nd valve position by the 1st valve position, oil inlet P is communicated with hydraulic fluid port A and drain tap T simultaneously, and oil inlet P is strengthened with supply current with the degree that is communicated with of hydraulic fluid port A, oil inlet P is communicated with degree with increasing and reduce with supply current with drain tap T's, the fluid of oil inlet P that is transported to the 4th solenoid valve EV4 through hydraulic fluid port A to the first oil cylinder HC1 fuel feeding, and fuel feeding oil pressure is along with the oil inlet P of the 4th solenoid valve and the degree that is communicated with of hydraulic fluid port A strengthen and raise, thereby make oil hydraulic pump HB singly turn that discharge capacity increases gradually and along with the oil inlet P of the 4th solenoid valve and the degree that is communicated with of hydraulic fluid port A strengthen and increase, along with the discharge capacity that singly turns of oil hydraulic pump HB increases gradually by 0, oil hydraulic pump HB starts to suck from hydraulic pressure oil groove TA by its oil inlet P fluid and discharges through its oil drain out O, fluid amount and the increase that singly turns discharge capacity with it of the suffered flowed friction of rotor thereof that oil hydraulic pump HB sucks and discharges increase, thereby the power that makes the first output shaft 6 and the suffered rotation condition power of sun gear 3 and pto＝power take-off 1 transfer be delivered to ring gear 5 increases gradually, the power that transfer is delivered to ring gear 5 passes to jack shaft 15 through the second output shaft 7, forward gear synchronizer 13, a gear driving gear 12, a gear driven gear 17 with mechanical drive mode, in the fluid that oil hydraulic pump HB discharges, a part is transported to lubrication oil circuit interface LUO through lubricating oil flow controlling unit LC, another part is through oil inlet P and the oil outlet A of the first solenoid valve EV1, the oil inlet P of hand control valve and the first hydraulic fluid port A enter the first hydraulic fluid port A of oil hydraulic motor HM and drive its rotor and external outputting power, make the rotating speed of the oil hydraulic motor axle 21 being in transmission connection with the rotor of oil hydraulic motor HM higher than the rotating speed of jack shaft 15, unidirectional locking device 20 is locked, thereby make the power being delivered on sun gear 3 by power input shaft 1 transfer be delivered to jack shaft 15 with hydraulic transmission mode, along with the rotor of oil hydraulic motor HM rotates, the fluid that enters the first hydraulic fluid port A of oil hydraulic motor HM flow back into hydraulic control fuel tank TC through the second hydraulic fluid port B and the drain tap T of its second hydraulic fluid port B, hand control valve HV, above-mentioned be delivered to power on jack shaft 15 and conflux with mechanical drive mode and hydraulic transmission mode respectively after, pass to differential mechanism 23 and wheel is formed to driving force through main deceleration driving gear 16, main deceleration driven gear 22, vehicle start in the time that formed driving force is enough large, while needing to continue to accelerate after the starting of vehicle forward gear, by increase the power inputted of power input shaft 1 and rotating speed or continue to strengthen oil hydraulic pump HB singly turn discharge capacity and its singly turn after discharge capacity reaches maximum value, reduce gradually oil hydraulic motor HM singly turn rotating speed that discharge capacity makes its rotor output increase or increase simultaneously power that power input shaft 1 inputs and rotating speed, continuation strengthen oil hydraulic pump HB singly turn discharge capacity and its singly turn after discharge capacity reaches maximum value, reduce gradually oil hydraulic motor HM singly turn discharge capacity, can make vehicle continue to accelerate.

Vehicle forward gear at the uniform velocity travels.

In the time that vehicle accelerates to certain speed and need to enter at the uniform velocity travelling state, maintenance medium press pump HB singly to turn discharge capacity constant, simultaneously progressively reduce the supply current to the 3rd solenoid valve EV3 until be 0, make fluid that the 3rd solenoid valve EV3 is progressively converted to the 1st valve position, the second hydraulic jack HC2 by its 2nd valve position gradually the discharge capacity that singly turns emptying, that make oil hydraulic motor HM be tending towards gradually 0; Subsequently, the first solenoid valve EV1 energising makes it be converted to the 2nd valve position, oil inlet P and hydraulic fluid port A by the 1st valve position to end simultaneously, the fluid that oil hydraulic pump HB discharges can only flow to lubrication oil circuit interface LUO through lubricating oil flow controlling unit LC, the fluid flow that oil hydraulic pump HB is discharged due to the metering function of lubricating oil flow controlling unit LC is restricted, thereby the rotor that makes oil hydraulic pump maintains certain rotating speed, and then make to form and determine than transmission between power input shaft 1 and differential mechanism 12, make vehicle enter at the uniform velocity travelling state.

When vehicle at the uniform velocity travels, due to the first solenoid valve EV1 in the 2nd valve position, interrupted the oil feeding line to oil hydraulic motor HM, make the rotor speed of oil hydraulic motor HM and the rotating speed of oil hydraulic motor axle 21 rotating speed lower than jack shaft 15, thereby make 20 releases of unidirectional locking device.

When vehicle travels with a gear, can realize acceleration, the deceleration of vehicle in certain speed range and at the uniform velocity travel by controlling the power inputted of power input shaft 1 and rotating speed.

The gearshift of vehicle forward gear.

In the time that vehicle need to change to two gears by a gear, the first solenoid valve EV1 energising ends its oil inlet P and oil outlet A in the 2nd valve position simultaneously, and the discharge capacity that singly turns of oil hydraulic pump HB is adjusted to 0, makes mechanical transfer module TD lose transfer effect; Subsequently, forward gear synchronizer 13 is moved to II position, first with after gear driving gear 12 releases the second output shaft 7 is locked with two gear driving gears 14 again by I position, afterwards, the discharge capacity that singly turns of oil hydraulic pump HB strengthens, makes its rotor to recover the rotation condition to the first output shaft 6 and sun gear 3 gradually by 0, make vehicle enter two gear travelling states.

When vehicle travels with two gears, can realize acceleration, the deceleration of vehicle in certain speed range and at the uniform velocity travel by controlling the power inputted of power input shaft 1 and rotating speed.

Contrary with above-mentioned shift process, can make vehicle change to a gear by two gears.

Vehicle reverse gear starting, accelerate and at the uniform velocity travel.

Vehicle is converted to by neutral position state when starting of reversing gear, reverse gear synchronizer 11 moves to R position, the second output shaft 7 and the driving gear 8 that reverses gear are locked, the locking synchronization device 19 that reverses gear moves to R position, jack shaft 15 and oil hydraulic motor axle 21 are locked, because vehicle is now in the state of rest of starting not yet, vehicle inertia power by driving wheel of vehicle through differential mechanism 23, main deceleration driven gear 22, main deceleration driving gear 16, jack shaft 15, one gear driven gear 17, driven gear 9 reverses gear, driving gear 8 reverses gear, reverse gear synchronizer 11 and the second output shaft 7 form fixed constraint to ring gear 5, power input shaft 1 forms surely than transmission sun gear 3, but because the discharge capacity that singly turns of oil hydraulic pump HB is 0, make it not form constraint to the first output shaft 6 and sun gear 3, thereby make mechanical transfer module TD not produce shunting gearing, afterwards, hand control valve HV is moved to the 3rd valve position, is made its oil inlet P be communicated with the second hydraulic fluid port B, the first hydraulic fluid port A connection drain tap T by the 2nd valve position, the second solenoid valve EV2 energising makes its first hydraulic fluid port A be communicated with the second hydraulic fluid port B, make the fluid that stores in the second accumulator AC2 oil inlet P fuel feeding of the oil inlet P to the 3rd solenoid valve EV3 and the 4th solenoid valve EV4 simultaneously, now, as the fluid storing in the second accumulator AC2 is not enough to drive the first oil cylinder HC1 and the second oil cylinder HC2 work, motor EM is switched on, drive electric oil pump DB from hydraulic control fuel tank TC, sucked fluid by its oil inlet P and discharge through oil drain out O, the fluid of being discharged by the oil drain out O of electric oil pump DB is after the oil inlet P and oil outlet A of the 3rd one-way valve SV3, the first hydraulic fluid port A to the second solenoid valve EV2 simultaneously, the oil inlet P fuel feeding of the oil inlet P of the 3rd solenoid valve EV3 and the 4th solenoid valve EV4, the fluid of the first hydraulic fluid port A that is transported to the second solenoid valve EV2 is the hydraulic fluid port A fuel feeding to the second accumulator AC2 through its second hydraulic fluid port B, subsequently, subsequently, to the 3rd solenoid valve EV3 power at full capacity, make its by the 1st valve position be converted to that the 3rd valve position, oil inlet P are communicated with hydraulic fluid port A, the fluid that makes to be transported to its oil inlet P through hydraulic fluid port A to the second oil cylinder HC2 fuel feeding, make the discharge capacity that singly turns of oil hydraulic motor HM reach maximum value, the 4th solenoid valve EV4 power supply is also strengthened to supply current gradually, make it be converted to gradually the 2nd valve position by the 1st valve position, oil inlet P is communicated with hydraulic fluid port A and drain tap T simultaneously, and oil inlet P is strengthened with supply current with the degree that is communicated with of hydraulic fluid port A, oil inlet P is communicated with degree with increasing and reduce with supply current with drain tap T's, the fluid of oil inlet P that is transported to the 4th solenoid valve EV4 through hydraulic fluid port A to the first oil cylinder HC1 fuel feeding, and fuel feeding oil pressure is along with the oil inlet P of the 4th solenoid valve and the degree that is communicated with of hydraulic fluid port A strengthen and raise, thereby make oil hydraulic pump HB singly turn that discharge capacity increases gradually and along with the oil inlet P of the 4th solenoid valve and the degree that is communicated with of hydraulic fluid port A strengthen and increase, along with the discharge capacity that singly turns of oil hydraulic pump HB increases gradually by 0, oil hydraulic pump HB starts to suck from hydraulic pressure oil groove TA by its oil inlet P fluid and discharges through its oil drain out O, fluid amount and the increase that singly turns discharge capacity with it of the suffered flowed friction of rotor thereof that oil hydraulic pump HB sucks and discharges increase, thereby the power that makes the first output shaft 6 and the suffered rotation condition power of sun gear 3 and pto＝power take-off 1 transfer be delivered to ring gear 5 increases gradually, the power that transfer is delivered to ring gear 5 passes to jack shaft 15 and drives jack shaft 15 to rotate backward with mechanical drive mode through reverse gear driving gear 8, reverse gear driven gear 9 and a gear driven gear 17 of the second output shaft 7, reverse gear synchronizer 11, in the fluid that oil hydraulic pump HB discharges, a part is transported to lubrication oil circuit interface LUO through lubricating oil flow controlling unit LC, another part is through oil inlet P and the oil outlet A of the first solenoid valve EV1, the oil inlet P of hand control valve and the second hydraulic fluid port B enter the second hydraulic fluid port B of oil hydraulic motor HM and drive its rotor counterrotating and the input end through unidirectional locking device 20, reverse gear locking synchronization device 19 to jack shaft 15 outputting powers, thereby make the power being delivered on sun gear 3 by power input shaft 1 transfer be delivered to jack shaft 15 and drive jack shaft 15 to rotate backward with hydraulic transmission mode, along with the rotor of oil hydraulic motor HM rotates, the fluid that enters the second hydraulic fluid port B of oil hydraulic motor HM flow back into hydraulic control fuel tank TC through the first hydraulic fluid port A and the drain tap T of its first hydraulic fluid port A, hand control valve HV, above-mentioned be delivered to power on jack shaft 15 and conflux with mechanical drive mode and hydraulic transmission mode respectively after, pass to differential mechanism 23 and wheel is formed to reverse actuating force through main deceleration driving gear 16, main deceleration driven gear 22, when the enough vehicle startings of reversing gear greatly time of formed driving force.

When vehicle needs to continue to accelerate after reversing gear and starting to walk, by increase the power inputted of power input shaft 1 and rotating speed or continue to strengthen oil hydraulic pump HB singly turn discharge capacity and its singly turn after discharge capacity reaches maximum value, reduce gradually oil hydraulic motor HM singly turn rotating speed that discharge capacity makes its rotor output increase or increase simultaneously power that power input shaft 1 inputs and rotating speed, continuation strengthen oil hydraulic pump HB singly turn discharge capacity and its singly turn after discharge capacity reaches maximum value, reduce gradually oil hydraulic motor HM singly turn discharge capacity, can make the vehicle acceleration that continues to reverse gear.

In the time that vehicle accelerates to certain speed and need to enter at the uniform velocity travelling state, maintenance medium press pump HB singly to turn discharge capacity constant, simultaneously progressively reduce the supply current to the 3rd solenoid valve EV3 until be 0, make fluid that the 3rd solenoid valve EV3 is progressively converted to the 1st valve position, the second hydraulic jack HC2 by its 2nd valve position gradually the discharge capacity that singly turns emptying, that make oil hydraulic motor HM be tending towards gradually 0; Subsequently, the first solenoid valve EV1 energising makes it be converted to the 2nd valve position, oil inlet P and hydraulic fluid port A by the 1st valve position to end simultaneously, the fluid that oil hydraulic pump HB discharges can only flow to lubrication oil circuit interface LUO through lubricating oil flow controlling unit LC, the fluid flow that oil hydraulic pump HB is discharged due to the metering function of lubricating oil flow controlling unit LC is restricted, thereby the rotor that makes oil hydraulic pump maintains certain rotating speed, and then make between power input shaft 1 and differential mechanism 12 to form fixed than transmission, vehicle is entered reverse gear at the uniform velocity travelling state.

When vehicle travels to reverse gear, acceleration, the deceleration can realize vehicle and reverse gear by controlling the power inputted of power input shaft 1 and rotating speed time in certain speed range and at the uniform velocity travelling.

In above embodiment 1, provide concrete mode of execution as shown in Figure 1 about mechanical transfer module TD.But understand those skilled in the art will know that after content of the present invention, planet carrier 2 in mechanical transfer module TD in the present invention, being in transmission connection of sun gear 3 and ring gear 5 can also adopt the first replacement scheme as shown in Figure 2, be that described power input shaft 1 is in transmission connection with ring gear 5, described sun gear 3 is as the first output terminal of mechanical transfer module, described planet carrier 2 is as the second output terminal of mechanical transfer module, or adopt the second replacement scheme as shown in Figure 3, be that described power input shaft 1 is in transmission connection with sun gear 3, described planet carrier 2 is as the first output terminal of mechanical transfer module, described ring gear 5 is as the second output terminal of mechanical transfer module, its essence is dynamic branch and the differential drive realizing between power intake and two clutch ends, and a just typical embodiment of accompanying drawing 1.

Above-described embodiment is only explanation technical conceive of the present invention and feature, and its object is to allow the personage who is familiar with the affiliated art of the present invention can understand content of the present invention and implement according to this, can not limit the scope of the invention with this.All equivalences that Spirit Essence is done according to the present invention change or modify, within all should being encompassed in protection scope of the present invention.

Embodiment 2:

Referring to Fig. 2, the power input shaft 1 of transfer gear TD is connecting ring gear 5; The wheel shaft of described sun gear 3 is connecting the one end as the first output shaft 6 of the first output terminal of transfer gear TD; Described planet carrier 2 is connecting the one end as the second output shaft 7 of the second output terminal of transfer gear TD; On described planet carrier 2, be installed with plural planet wheel shaft, each planet wheel shaft upper sliding sleeve is provided with planet wheel 4, and plural planet wheel 4 all between sun gear 3 and ring gear 5, and often engages with sun gear 3 and ring gear 5 simultaneously.

Other structure is with embodiment 1.

Working principle is with embodiment 1.

Embodiment 3:

Referring to Fig. 3, the power input shaft 1 of transfer gear TD is connecting the wheel shaft of sun gear 3; Described planet carrier 2 is connecting the one end as the first output shaft 6 of the first output terminal of transfer gear TD; On described planet carrier 2, be installed with plural planet wheel shaft, each planet wheel shaft is provided with planet wheel 4, and plural planet wheel 4 all between sun gear 3 and ring gear 5, and often engages with sun gear 3 and ring gear 5 simultaneously; Described ring gear 5 is connecting the one end as the second output shaft 7 of the second output terminal of transfer gear TD.

Other structure is with embodiment 1.

Working principle is with embodiment 1.

Claims

1. conflux variable speed drive and hydraulic control system thereof of power transfer, is characterized in that: be made up of mechanical transfer driving mechanism and hydraulic transmission controlling mechanism; Described mechanical transfer driving mechanism is made up of transfer gear TD and variable transmission mechanism, and described transfer gear TD has an input end and two output terminals; Described hydraulic transmission controlling mechanism is made up of than controlling mechanism RC hydraulic pressure drive control system mechanism and hydraulic transmission; The size of two suffered working resistances of output terminal of described transfer gear TD automatically regulates and distributes shunted power, make transmission system there is the function of carrying out within the specific limits stepless speed regulation, realize the optimum Match of input power and outputting power in transmission process, effectively the overall efficiency of lifting vehicle transmission system; Described hydraulic pressure drive control system mechanism comprises oil hydraulic pump HB, oil hydraulic motor HM, and two output terminals of transfer gear TD are respectively the input end of oil hydraulic pump HB, oil hydraulic motor HM; Described hydraulic transmission than controlling mechanism adopt independently, totally enclosed internal hydraulic pressure oil circulation, can effectively avoid sharing hydraulic oil liquid with hydraulic transmission and control system time, easily because oil contamination affects hydraulic transmission than the reliability of adjustment module and control accuracy;

2. conflux variable speed drive and hydraulic control system thereof of power transfer according to claim 1, it is characterized in that: in described mechanical transfer driving mechanism: transfer gear TD is planetary wheeling mechanism, comprise power input shaft (1), planet carrier (2), sun gear (3), plural planet wheel (4), ring gear (5), the first output shaft (6) and the second output shaft (7); Wherein the second output shaft (7) is tubular axis, and described the first output shaft (6) is coaxially plugged in the second output shaft (7), and two ends are overhanging; Described the first output shaft (6) and the second output shaft (7) are respectively as the input shaft of variable transmission mechanism;

Variable transmission mechanism comprises the first output shaft (6), the second output shaft (7), reverse gear shaft (10), jack shaft (15) and unidirectional locking device (20);

On described the second output shaft (7), empty set is provided with the driving gear that reverses gear (8), a gear driving gear (12) and two gear driving gears (14) successively; Between the described driving gear that reverses gear (8) and a described gear driving gear (12), be provided with reverse gear synchronizer (11); Described reverse gear synchronizer (11) rotates and can move axially to R position or N position along the second output shaft (7) in company with the second output shaft (7) is synchronous, in the time that moving to R position, reverse gear synchronizer (11) driving gear that reverses gear (8) and the second output shaft (7) can be locked and make to reverse gear driving gear (8) in company with the second output shaft (7) synchronous rotary, in the time that reverse gear synchronizer (11) moves to N position, will reverse gear driving gear (8) and the second output shaft (7) release;

Between a described gear driving gear (12) and two gear driving gears (14), be provided with forward gear synchronizer (13); Described forward gear synchronizer (13) rotates and can move axially to I position or N position or II position along the second output shaft (7) in company with the second output shaft (7) is synchronous; In the time that moving to I position, forward gear synchronizer (13) can lock and make a gear driving gear (12) in company with the second output shaft (7) synchronous rotary one gear driving gear (12) and the second output shaft (7); In the time that moving to II position, forward gear synchronizer (13) can lock and make two gear driving gears (14) in company with the second output shaft (7) synchronous rotary two gear driving gears (14) and the second output shaft (7); In the time that forward gear synchronizer (13) moves to N position, one gear driving gear (12) and two is kept off to driving gears (14) simultaneously and the second output shaft (7) release; The driven gear (9) that reverses gear is fixed on reverse gear shaft (10); The two ends swivel bearing of described reverse gear shaft (10) is upper in system casing KT, described in the driven gear (9) that reverses gear keep off driving gear (12) with the driving gear that reverses gear (8) and simultaneously and often engage; On described jack shaft (15), be provided with successively main deceleration driving gear (16), a gear driven gear (17) and two gear driven gears (18);

Described main deceleration driving gear (16) often engages with main deceleration driven gear (22), and a described gear driven gear (17) often engages with a gear driving gear (12), and described two gear driven gears (18) often engage with two gear driving gears (14); Described main deceleration driven gear (22) is fixedly arranged on the housing of differential assembly (23); Described unidirectional locking device (20) comprises input end and output terminal, the output terminal of unidirectional locking device (20) is fixedly arranged on the one end with the jack shaft (15) of the adjacent side of two gear driven gears (18), the input end of unidirectional locking device (20) is fixedly arranged on one end of oil hydraulic motor axle (21), between described two gear driven gears (18) and described unidirectional locking device (20), is provided with the locking synchronization device (19) that reverses gear; The described locking synchronization device (19) that reverses gear rotates and can move axially to R position or N position along jack shaft (15) with jack shaft (15) is synchronous, the input end of unidirectional locking device (20) is locked in to jack shaft (15) in the time that the locking synchronization device (19) that reverses gear moves to R position and goes up and make jack shaft (15) synchronously to rotate in company with the input end of unidirectional locking device (20), in the time that the locking synchronization device (19) that reverses gear moves to N position by the input end of unidirectional locking device (20) and jack shaft (15) release;

In described hydraulic transmission controlling mechanism:

Described hydraulic transmission is a totally enclosed hydraulic servo control and actuator than adjustment module RC, comprises motor EM, electric oil pump DB, the second one-way valve SV2, the 3rd one-way valve SV3, the second accumulator AC2, the second solenoid valve EV2, the 3rd solenoid valve EV3, the 4th solenoid valve EV4, the first oil cylinder HC1, the second oil cylinder HC2 and hydraulic control fuel tank TC;

The oil drain out O of described electric oil pump DB is being communicated with the oil inlet P of described the second one-way valve SV2 and the oil inlet P of the 3rd one-way valve SV3 simultaneously; The oil outlet A of described the 3rd one-way valve SV3 is being communicated with the oil inlet P of the first hydraulic fluid port A, the 3rd solenoid valve EV3 and the oil inlet P of the 4th solenoid valve EV4 of the second solenoid valve EV2 simultaneously; The second hydraulic fluid port B of described the second solenoid valve EV2 is being communicated with the hydraulic fluid port A of described the second accumulator AC2; The hydraulic fluid port A of described the 3rd solenoid valve EV3 is being communicated with the hydraulic fluid port A of the second oil cylinder HC2 rodless cavity; The hydraulic fluid port A of described the 4th solenoid valve EV4 is being communicated with the hydraulic fluid port A of the first oil cylinder HC1 rodless cavity; The drain tap T of the oil inlet P of described electric oil pump DB, the drain tap T of described the second one-way valve SV2, the 3rd solenoid valve EV3, the drain tap T of the 4th solenoid valve EV4 are all being communicated with hydraulic control fuel tank TC;

When to the first oil cylinder HC1 fuel feeding, can make its oil cylinder oil-filled, simultaneously make oil hydraulic pump HB singly turn discharge capacity strengthen; In the time of the first oil cylinder HC1 draining, can make the discharge capacity that singly turns of oil hydraulic pump HB reduce; In the time that in the cylinder that maintains the first oil cylinder HC1, oil pressure is constant, can maintenance medium press pump HB singly to turn discharge capacity constant; The rotor of one end connecting fluid press pump HB of first output shaft (6) corresponding with hydraulic pressure drive control system mechanism; One end of the jack shaft (15) corresponding with oil hydraulic motor HM is connecting oil hydraulic motor axle (21) by output terminal and the input end of unidirectional locking device (20); Under forward gear operating mode, in the time that the rotating speed of oil hydraulic motor axle (21) is greater than the rotating speed of jack shaft (15), the input end of unidirectional locking device (20) and output terminal locking, make oil hydraulic motor axle (21) lock with jack shaft (15) and synchronize rotation; In the time that the rotating speed of oil hydraulic motor axle (21) is less than the rotating speed of jack shaft (15), the input end of unidirectional locking device (20) and output terminal release make oil hydraulic motor axle (21) and jack shaft (15) release simultaneously;

3. conflux variable speed drive and hydraulic control system thereof of power transfer according to claim 2, is characterized in that: the power input shaft (1) of described transfer gear TD is connecting planet carrier (2); Described planet carrier is installed with plural planet wheel shaft on (2), each planet wheel shaft upper sliding sleeve is provided with planet wheel (4), plural planet wheel (4) is all positioned between sun gear (3) and ring gear (5), and often engages with sun gear (3) and ring gear (5) simultaneously; The wheel shaft of sun gear (3) is connecting the one end as first output shaft (6) of the first output terminal of transfer gear TD; Described ring gear (5) is connecting the one end as second output shaft (7) of the second output terminal of transfer gear TD.

4. conflux variable speed drive and hydraulic control system thereof of power transfer according to claim 2, is characterized in that: the power input shaft (1) of described transfer gear TD is connecting ring gear (5); The wheel shaft of described sun gear (3) is connecting the one end as first output shaft (6) of the first output terminal of transfer gear TD; Described planet carrier (2) is connecting the one end as second output shaft (7) of the second output terminal of transfer gear TD; Described planet carrier is installed with plural planet wheel shaft on (2), each planet wheel shaft upper sliding sleeve is provided with planet wheel (4), plural planet wheel (4) is all positioned between sun gear (3) and ring gear (5), and often engages with sun gear (3) and ring gear (5) simultaneously.

5. conflux variable speed drive and hydraulic control system thereof of power transfer according to claim 2, is characterized in that: the power input shaft (1) of described transfer gear TD is connecting the wheel shaft of sun gear (3); Described planet carrier (2) is connecting the one end as first output shaft (6) of the first output terminal of transfer gear TD; Described planet carrier is installed with plural planet wheel shaft on (2), each planet wheel shaft upper sliding sleeve is provided with planet wheel (4), plural planet wheel (4) is all positioned between sun gear (3) and ring gear (5), and often engages with sun gear (3) and ring gear (5) simultaneously; Described ring gear (5) is connecting the one end as second output shaft (7) of the second output terminal of transfer gear TD.

6. conflux variable speed drive and hydraulic control system thereof of power transfer according to claim 2, it is characterized in that: described hydraulic pressure drive control system mechanism also comprises lubricating oil flow controlling unit LC, and described lubricating oil flow controlling unit LC comprises flow control valve CV and throttle valve TH; The filler opening a of lubricating oil flow controlling unit LC is being communicated with the oil inlet P of flow control valve CV and the oil inlet P of throttle valve TH simultaneously, and the oil outlet A of described flow control valve CV and the oil outlet A of throttle valve TH are being communicated with the oil outlet b of lubricating oil flow controlling unit LC simultaneously; Described oil outlet b is being communicated with lubrication oil circuit interface LUO.

7. conflux variable speed drive and hydraulic control system thereof of power transfer according to claim 2, is characterized in that: described unidirectional locking device (20) is roller chute type overrunning clutch, or free wheeling sprag clutch.

8. conflux variable speed drive and hydraulic control system thereof of power transfer according to claim 2, it is characterized in that: described oil hydraulic pump HB is unidirectional variable displacement vane pump, or unidirectional change discharge capacity axial piston pump, it singly turns discharge capacity can be 0 to carrying out step-less adjustment between maximum pump discharge in discharge capacity.

9. conflux variable speed drive and hydraulic control system thereof of power transfer according to claim 2, it is characterized in that: described oil hydraulic motor HM is two-way change discharge capacity sliding-vane motor, or two-way change discharge capacity axial piston motor, it singly turns discharge capacity can be 0 to carrying out step-less adjustment between maximum pump discharge in discharge capacity.

10. conflux variable speed drive and hydraulic control system thereof of power transfer according to claim 2, is characterized in that: described motor EM is micro-constant electric motor with speed, or miniature adjustable bow curved roll speed motor.