CN109611520A - Electro-motive vehicle stepless speed variator system - Google Patents
Electro-motive vehicle stepless speed variator system Download PDFInfo
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- CN109611520A CN109611520A CN201811645331.5A CN201811645331A CN109611520A CN 109611520 A CN109611520 A CN 109611520A CN 201811645331 A CN201811645331 A CN 201811645331A CN 109611520 A CN109611520 A CN 109611520A
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- 230000007246 mechanism Effects 0.000 claims abstract description 97
- 230000001105 regulatory effect Effects 0.000 claims abstract description 91
- 230000005540 biological transmission Effects 0.000 claims abstract description 65
- 239000003921 oil Substances 0.000 claims description 218
- 239000010720 hydraulic oil Substances 0.000 claims description 60
- 238000001816 cooling Methods 0.000 claims description 20
- 239000010687 lubricating oil Substances 0.000 claims description 12
- 230000001050 lubricating effect Effects 0.000 claims description 8
- 230000009194 climbing Effects 0.000 abstract description 5
- 238000004804 winding Methods 0.000 description 17
- 230000008859 change Effects 0.000 description 10
- 230000009467 reduction Effects 0.000 description 9
- 230000009471 action Effects 0.000 description 5
- 238000000034 method Methods 0.000 description 5
- 230000003321 amplification Effects 0.000 description 3
- 238000010586 diagram Methods 0.000 description 3
- 230000000694 effects Effects 0.000 description 3
- 230000005611 electricity Effects 0.000 description 3
- 239000012530 fluid Substances 0.000 description 3
- 239000000314 lubricant Substances 0.000 description 3
- 238000003199 nucleic acid amplification method Methods 0.000 description 3
- 230000008569 process Effects 0.000 description 3
- 238000011897 real-time detection Methods 0.000 description 3
- 230000001360 synchronised effect Effects 0.000 description 2
- 239000003638 chemical reducing agent Substances 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 230000035772 mutation Effects 0.000 description 1
- 238000004080 punching Methods 0.000 description 1
- 230000035939 shock Effects 0.000 description 1
Classifications
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16H—GEARING
- F16H7/00—Gearings for conveying rotary motion by endless flexible members
- F16H7/02—Gearings for conveying rotary motion by endless flexible members with belts; with V-belts
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16H—GEARING
- F16H57/00—General details of gearing
- F16H57/02—Gearboxes; Mounting gearing therein
- F16H57/028—Gearboxes; Mounting gearing therein characterised by means for reducing vibration or noise
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16H—GEARING
- F16H61/00—Control functions within control units of change-speed- or reversing-gearings for conveying rotary motion ; Control of exclusively fluid gearing, friction gearing, gearings with endless flexible members or other particular types of gearing
- F16H61/38—Control of exclusively fluid gearing
- F16H61/40—Control of exclusively fluid gearing hydrostatic
- F16H61/4008—Control of circuit pressure
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- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Control Of Transmission Device (AREA)
Abstract
The invention discloses a kind of electro-motive vehicle stepless speed variator system, the hydraulic executing systems of the gear ratio including stepless speed changing mechanism and for adjusting stepless speed changing mechanism.Stepless speed changing mechanism includes driving pulley, driven pulley and the transmission belt being set on driving pulley and driven pulley；Hydraulic executing system includes oil pump, first pressure oil circuit and second pressure oil circuit；First pressure oil circuit and second pressure oil circuit are connect with oil pump, and the first pressure regulating valve for adjusting oil pressure is equipped in first pressure oil circuit, the second pressure regulating valve for adjusting oil pressure is equipped in second pressure oil circuit.Electro-motive vehicle stepless speed variator system of the invention, by the way that hydraulic executing system is arranged, realize that the gear ratio of stepless speed changing mechanism is adjusted, it can make entire stepless speed variator system that cost that is energy-efficient and reducing vehicle application may be implemented, vehicle low-speed dynamic and grade climbing performance not only can be improved, while the energy utilization rate of vehicle can be improved.
Description
Technical field
The invention belongs to transmission technology fields, specifically, the present invention relates to a kind of electro-motive vehicle variable speed
System.
Background technique
Typical electro-motive vehicle transmission system is made of constant-speed ratio reduction gearing, and motor power is direct by reduction gearing
It is transmitted to wheel, motor power can not realize the adjusting of torque and revolving speed to adapt to vehicle driving, in order to full by retarder
Sufficient vehicle low-speed big demand and high speed travel demand, and electro-motive vehicle is all by improving Motor torque and revolving speed at present
To meet the needs of vehicle.
Although current power drive system can substantially meet vehicle use demand, current system limitations compare
Greatly, as compared with conventional truck, dynamic property and max. speed are obviously relatively low, and pure electric power consumption height, at the same integral vehicle cost compared with
Height, and since the high revolving speed operational shock noise problem of motor is prominent.It is a series of in order to solve single reduction gear system bring
Deficiency, the patent document of Publication No. CN104534037A disclose a kind of two-speed automatic transmission that electro-motive vehicle uses,
It includes input shaft, jackshaft, the first cylindrical gear pair, the second cylindrical gear pair, third cylindrical gear pair, the first torque transfer
Device, the second torque transmitter, planet gear transmission device and differential assembly.The program increases compared to single reduction gear
Add a gear, effectively increases the dynamic property and power consumption performance of former power drive system；But since only there are two gear, nothings
Method plays electric efficiency and torque to greatest extent, so that the dynamic property of pure electric vehicle and power consumption performance can not be sent out
Maximum horizontal is waved, simultaneously because there are a wide range of mutation of motor speed during two gear switches, vehicle punching can be generated
Sense is hit, the driver comfort of vehicle is influenced.Therefore, it is necessary to a kind of function is more perfect, power consumption is lower, the higher electricity of driver comfort
Drive vehicle stepless speed variator system.
Summary of the invention
The present invention is directed at least solve one of the technical problems existing in the prior art.For this purpose, the present invention provides a kind of electricity
Drive vehicle stepless speed variator system, it is therefore an objective to improve the energy utilization rate of vehicle.
To achieve the goals above, the technical scheme adopted by the invention is as follows: electro-motive vehicle stepless speed variator system, packet
It includes:
Stepless speed changing mechanism comprising driving pulley, driven pulley and be set on driving pulley and driven pulley
Transmission belt；And
Hydraulic executing system comprising oil pump, for guiding hydraulic oil to driving pulley and being used to adjust driving pulley
The first pressure oil circuit of groove width and for by hydraulic oil guide to driven pulley and be used to adjust driven pulley groove width second pressure
Power oil circuit；First pressure oil circuit and second pressure oil circuit are connect with oil pump, are equipped in first pressure oil circuit for adjusting oil pressure
First pressure regulating valve is equipped with the second pressure regulating valve for adjusting oil pressure in second pressure oil circuit.
The first pressure regulating valve is two-position three way magnetic valve.
The second pressure regulating valve is two-position three way magnetic valve.
The hydraulic executing system further include connect with the first pressure regulating valve and the second pressure regulating valve and
Hydraulic oil is guided to the cooling and lubricating oil circuit that at specified parts specified parts are carried out with cooling and lubricating.
The first oil pressure sensor for detecting oil pressure is equipped in the first pressure oil circuit.
The second oil pressure sensor for detecting oil pressure is equipped in the second pressure oil circuit.
The electro-motive vehicle stepless speed variator system further include:
Power transfer mechanism, for realizing the power transmitting between driving motor and the stepless speed changing mechanism.
The power transfer mechanism include the first gear connecting with the driving motor and engaged with first gear and with
The second gear of the stepless speed changing mechanism connection.
The electro-motive vehicle stepless speed variator system further include:
Power transfer mechanism, for realizing the power transmitting between stepless speed changing mechanism and deceleration mechanism.
The power transfer mechanism includes the first gear connecting with the stepless speed changing mechanism and engages with first gear
And the second gear being connect with the deceleration mechanism.
Electro-motive vehicle stepless speed variator system of the invention realizes stepless speed changer by the way that hydraulic executing system is arranged
The gear ratio of structure is adjusted, can make entire stepless speed variator system may be implemented it is energy-efficient and reduce vehicle application at
This, not only can be improved vehicle low-speed dynamic and grade climbing performance, while can improve the energy utilization rate of vehicle, and make electricity
Machine does not need work in high speed area, can substantially improve power drive system because the high rotary speed working bring vibration of motor is made an uproar
Mail topic, while the cost that vehicle substantially reduces driving motor and electric-control system to the high-revolving demand of motor can be reduced.
Detailed description of the invention
This specification includes the following drawings, and shown content is respectively:
Fig. 1 is the structural schematic diagram of embodiment one；
Fig. 2 is the structural schematic diagram of embodiment two；
Fig. 3 is the structural schematic diagram of embodiment three；
In the figure, it is marked as 1, driving motor；2, driving pulley；3, transmission belt；4, driven pulley；5, deceleration driving gear；
6, reduction driven gear；7, oil pump；8, the second oil pressure sensor；9, cooling and lubricating oil circuit；10, the second pipeline；11, the second tooth
Wheel；12, second pressure regulating valve；13, working connection；14, first pressure regulating valve；15, the first pipeline；16, the first oil pressure senses
Device；17, first gear.
Specific embodiment
Below against attached drawing, by the description of the embodiment, making to a specific embodiment of the invention further details of
Explanation, it is therefore an objective to those skilled in the art be helped to have more complete, accurate and deep reason to design of the invention, technical solution
Solution, and facilitate its implementation.
Embodiment one
As shown in Figure 1, present embodiments providing a kind of electro-motive vehicle stepless speed variator system, including stepless speed changing mechanism
With the hydraulic executing system of the gear ratio for adjusting stepless speed changing mechanism.Stepless speed changing mechanism includes driving pulley 2, driven belt
Wheel 4 and the transmission belt 3 for being set on driving pulley 2 and driven pulley 4 and be annular；Hydraulic executing system includes oil pump 7, uses
In by hydraulic oil guide to driving pulley 2 and be used to adjust driving pulley 2 pulley groove groove width first pressure oil circuit and be used for
By hydraulic oil guide to driven pulley 4 and be used to adjust driven pulley 4 pulley groove groove width second pressure oil circuit；First pressure
Oil circuit and second pressure oil circuit are connect with oil pump 7, and the first pressure regulating valve for adjusting oil pressure is equipped in first pressure oil circuit
14, the second pressure regulating valve 12 for adjusting oil pressure is equipped in second pressure oil circuit.
As shown in Figure 1, stepless speed changing mechanism is variable v-belt drive, one end of transmission belt 3 is wound on driving pulley 2
On, on driven pulley 4, the driving pulley 2 of stepless speed changing mechanism is connect the other end of transmission belt 3 with driving motor 1, is driven
Movable belt pulley 2 receives the power generated by driving motor 1, and driven pulley 4 is connect by deceleration mechanism with differential mechanism and the speed reducer
Structure play the role of slow down increase square, deceleration mechanism and be one-stage gear mechanism, realize the transmitting of power, the deceleration mechanism include with from
Movable belt pulley 4 is the deceleration driving gear 5 of coaxial arrangement and is fixedly installed on the shell of differential mechanism and nibbles with deceleration driving gear 5
The reduction driven gear 6 of conjunction.For driving motor 1 in driving vehicle travel process, the power that driving motor 1 generates will be by stepless
Gear, deceleration mechanism and differential mechanism are output to wheel, can realize stepless speed regulation by stepless transmission, realize low vehicle
It is low by making stepless transmission work be output to wheel raising vehicle after large transmission ratio is by the amplification of driving motor torque when fast
The dynamic property of speed, while in middle high speed, by reducing stepless transmission work by motor speed in lower transmission ratio
Output, enables motor to work in middle and slow speed of revolution efficient region, which compares currently used single-speed deceleration device, not only may be used
To improve vehicle low-speed dynamic and grade climbing performance, while the energy utilization rate of vehicle can be improved, and motor is not needed
Work can substantially improve power drive system because of the high rotary speed working bring vibrating noise problem of motor in high speed area,
The cost that vehicle substantially reduces driving motor and electric-control system to the high-revolving demand of motor can be reduced simultaneously.
As shown in Figure 1, realized when the adjusting of the gear ratio of stepless speed changing mechanism by hydraulic executing system, hydraulic execution
System provides hydraulic oil to driving pulley 2 and driven pulley 4, realizes the tune of the groove width size of driving pulley 2 and driven pulley 4
Section, increases or reduces the winding radius of transmission belt 3, and then realizes the adjusting of gear ratio.For driving pulley 2, when driving band
After entering hydraulic oil in wheel 2, under action of hydraulic force, the groove width of the pulley groove of driving pulley 2 reduces, the winding half of transmission belt 3
Diameter increases；For driven pulley 4, after entering hydraulic oil in driven pulley 4, under action of hydraulic force, the belt wheel of driven pulley 4
The groove width of slot reduces, and the winding radius of transmission belt 3 increases.The adjusting of the gear ratio of stepless speed changing mechanism passes through the volume of transmission belt 3
Around radius consecutive variations and realize.
As shown in Figure 1, first pressure regulating valve 14 be two-position three way magnetic valve, have an oil inlet, one it is fuel-displaced
Mouth and an oil return opening, first pressure oil circuit further includes the first pipeline connecting with first pressure regulating valve 14 and driving pulley 2
15, first pressure regulating valve 14 is used to adjust the oil pressure of the first pipeline 15, one end of the first pipeline 15 and first pressure regulating valve
14 oil outlet connection, the other end of the first pipeline 15 are connect with driving pulley 2, and oil pump 7 passes through working connection 13 and first pressure
The oil inlet of regulating valve 14 connects, and the hydraulic oil that oil pump 7 pumps enters in first pressure regulating valve 14 through working connection 13, oil pump 7
For electric oil pump.When the oil inlet and outlet of first pressure regulating valve 14 is in connected state, oil return opening is closed, into the
Hydraulic oil in one pressure-regulating valve 14 is flowed out from oil outlet, and hydraulic oil enters in driving pulley 2 through the first pipeline 15 again；When
The oil return opening and oil outlet of one pressure-regulating valve 14 when connected state, close by oil inlet, the hydraulic oil warp in driving pulley 2
First pipeline 15 enters in first pressure regulating valve 14, flows out into the hydraulic oil in first pressure regulating valve 14 from oil return opening,
Driving pulley 2 carries out draining, and the groove width of the pulley groove of driving pulley 2 increases, and the winding radius of transmission belt 3 reduces.
As shown in Figure 1, second pressure regulating valve 12 is also two-position three way magnetic valve, go out with an oil inlet, one
Hydraulic fluid port and an oil return opening, second pressure oil circuit further include the second pipe connecting with second pressure regulating valve 12 and driven pulley 4
Road 10, second pressure regulating valve 12 are used to adjust the oil pressure of the second pipeline 10, and one end of the second pipeline 10 and second pressure are adjusted
The oil outlet of valve 12 connects, and the other end of the second pipeline 10 is connect with driven pulley 4, and oil pump 7 passes through working connection 13 and the second pressure
The oil inlet of force regulating valve 12 connects, and the hydraulic oil that oil pump 7 pumps enters in second pressure regulating valve 12 through working connection 13.When
When the oil inlet and outlet of two pressure-regulating valves 12 is in connected state, oil return opening is closed, into second pressure regulating valve 12
In hydraulic oil from oil outlet flow out, hydraulic oil again through the second pipeline 10 enter driven pulley 4 in；When second pressure regulating valve 12
Oil return opening and oil outlet when connected state, oil inlet is closed, and the hydraulic oil in driven pulley 4 enters through the second pipeline 10
It in second pressure regulating valve 12, is flowed out into the hydraulic oil in second pressure regulating valve 12 from oil return opening, driven pulley 4 is let out
The groove width of oil, the pulley groove of driven pulley 4 increases, and the winding radius of transmission belt 3 reduces.
As shown in Figure 1, hydraulic executing system further includes connecting with first pressure regulating valve 14 and second pressure regulating valve 12
And hydraulic oil is guided to the cooling and lubricating oil circuit 9 that at specified parts specified parts are carried out with cooling and lubricating, cooling and lubricating oil circuit 9
It is connect with the oil return opening of the oil return opening of first pressure regulating valve 14 and second pressure regulating valve 12, driving pulley 2 and driven pulley 4
The hydraulic oil of middle outflow enters cooling and lubricating oil circuit 9 through first pressure regulating valve 14 and second pressure regulating valve 12 respectively, by cold
But lubricant passage way 9 guides hydraulic oil to specified parts, is used to carry out cooling and lubricating to component.
As shown in Figure 1, being equipped with the first oil pressure sensor 16 for detecting oil pressure in first pressure oil circuit, the first oil pressure is passed
Sensor 16 is mounted on the first pipeline 15, is equipped with the second oil pressure sensor 8 for detecting oil pressure in second pressure oil circuit, and second
Oil pressure sensor 8 is mounted on the second pipeline 10.Therefore the essence in order to guarantee first pressure oil circuit and second pressure oil circuit oil pressure
Really control, oil pressure sensor is installed respectively on two oil circuits, be used to real-time detection practical pressure, it is ensured that driving pulley 2 and from
The pressure of movable belt pulley 4 accurately controls.
In the present embodiment, two pressure-regulating valves are respectively outputted to working connection 13 by 7 output oil pressure of electric oil pump,
The pressure oil circuit pressure of driving pulley 2 and driven pulley 4 is controlled by control pressure-regulating valve so that driving pulley 2 and from
Movable belt pulley 4 continuously changes with the radius that engages of transmission belt 3, also just realizes by changing pressure and changes driving pulley 2 and driven
The cone pulley axial position of belt wheel 4 is also achieved that variable speed to realize the change of transmission ratio.
Embodiment two
As shown in Fig. 2, present embodiments providing a kind of electro-motive vehicle stepless speed variator system, including stepless speed changer
The hydraulic executing system of structure, power transfer mechanism and the gear ratio for adjusting stepless speed changing mechanism.Stepless speed changing mechanism includes
Driving pulley 2, driven pulley 4 and the transmission belt 3 for being set on driving pulley 2 and driven pulley 4 and be annular；Hydraulic execution
System include oil pump 7, for by hydraulic oil guide to driving pulley 2 and be used to adjust driving pulley 2 pulley groove groove width
One pressure oil circuit and for by hydraulic oil guide to driven pulley 4 and be used to adjust driven pulley 4 pulley groove groove width second
Pressure oil circuit；First pressure oil circuit and second pressure oil circuit are connect with oil pump 7, are equipped in first pressure oil circuit for adjusting oil pressure
First pressure regulating valve 14, the second pressure regulating valve 12 for adjusting oil pressure is equipped in second pressure oil circuit.Power transmitting
Mechanism is for realizing the power transmitting between driving motor 1 and stepless speed changing mechanism, power transfer mechanism and driving motor 1 and nothing
Grade gear connection.
As shown in Fig. 2, stepless speed changing mechanism is variable v-belt drive, one end of transmission belt 3 is wound on driving pulley 2
On, the other end of transmission belt 3 on driven pulley 4, the driving pulley 2 of stepless speed changing mechanism by power transfer mechanism with
Driving motor 1 connects, and power transfer mechanism receives the power generated by driving motor 1, and driving pulley 2, which is received, transmits machine by power
The power of structure transmitting, driven pulley 4, which is connect by deceleration mechanism with differential mechanism, and the deceleration mechanism plays the role of slowing down increases square, subtracts
Fast mechanism and be one-stage gear mechanism, realize the transmitting of power, which includes with driven pulley 4 be coaxially disposed subtract
Fast driving gear 5 and the reduction driven gear 6 for being fixedly installed on the shell of differential mechanism and being engaged with deceleration driving gear 5.It drives
For dynamic motor 1 in driving vehicle travel process, the power that driving motor 1 generates will pass through power transfer mechanism, stepless speed changer
Structure, deceleration mechanism and differential mechanism are output to wheel, can realize stepless speed regulation by stepless transmission, realize logical when low speed
It crosses so that stepless transmission work, which is output to wheel after large transmission ratio is by the amplification of driving motor torque, improves the dynamic of vehicle low speed
Power, while in middle high speed, by exporting stepless transmission work to reduce motor speed in lower transmission ratio, make
Obtaining motor can work in middle and slow speed of revolution efficient region, which compares currently used single-speed deceleration device, not only can be improved
Vehicle low-speed dynamic and grade climbing performance, while the energy utilization rate of vehicle can be improved, and make motor not need work and exist
High speed area can substantially improve power drive system because of the high rotary speed working bring vibrating noise problem of motor, while can
The cost of driving motor and electric-control system is substantially reduced to reduce vehicle to the high-revolving demand of motor.
As shown in Fig. 2, be the same as example 1, system is executed by hydraulic when the adjusting of the gear ratio of stepless speed changing mechanism
What system was realized, hydraulic executing system provides hydraulic oil to driving pulley 2 and driven pulley 4, realizes driving pulley 2 and driven pulley
The adjusting of 4 groove width size, increases or reduces the winding radius of transmission belt 3, and then realizes the adjusting of gear ratio.For driving
Belt wheel 2, after entering hydraulic oil in driving pulley 2, under action of hydraulic force, the groove width of the pulley groove of driving pulley 2 reduces, and passes
The winding radius of dynamic band 3 increases；For driven pulley 4, after entering hydraulic oil in driven pulley 4, under action of hydraulic force, from
The groove width of the pulley groove of movable belt pulley 4 reduces, and the winding radius of transmission belt 3 increases.The adjusting of the gear ratio of stepless speed changing mechanism is logical
It crosses the consecutive variations of the winding radius of transmission belt 3 and realizes.
As shown in Fig. 2, first pressure regulating valve 14 be two-position three way magnetic valve, have an oil inlet, one it is fuel-displaced
Mouth and an oil return opening, first pressure oil circuit further includes the first pipeline connecting with first pressure regulating valve 14 and driving pulley 2
15, first pressure regulating valve 14 is used to adjust the oil pressure of the first pipeline 15, one end of the first pipeline 15 and first pressure regulating valve
14 oil outlet connection, the other end of the first pipeline 15 are connect with driving pulley 2, and oil pump 7 passes through working connection 13 and first pressure
The oil inlet of regulating valve 14 connects, and the hydraulic oil that oil pump 7 pumps enters in first pressure regulating valve 14 through working connection 13, oil pump 7
For electric oil pump.When the oil inlet and outlet of first pressure regulating valve 14 is in connected state, oil return opening is closed, into the
Hydraulic oil in one pressure-regulating valve 14 is flowed out from oil outlet, and hydraulic oil enters in driving pulley 2 through the first pipeline 15 again；When
The oil return opening and oil outlet of one pressure-regulating valve 14 when connected state, close by oil inlet, the hydraulic oil warp in driving pulley 2
First pipeline 15 enters in first pressure regulating valve 14, flows out into the hydraulic oil in first pressure regulating valve 14 from oil return opening,
Driving pulley 2 carries out draining, and the groove width of the pulley groove of driving pulley 2 increases, and the winding radius of transmission belt 3 reduces.
As shown in Fig. 2, second pressure regulating valve 12 is also two-position three way magnetic valve, go out with an oil inlet, one
Hydraulic fluid port and an oil return opening, second pressure oil circuit further include the second pipe connecting with second pressure regulating valve 12 and driven pulley 4
Road 10, second pressure regulating valve 12 are used to adjust the oil pressure of the second pipeline 10, and one end of the second pipeline 10 and second pressure are adjusted
The oil outlet of valve 12 connects, and the other end of the second pipeline 10 is connect with driven pulley 4, and oil pump 7 passes through working connection 13 and the second pressure
The oil inlet of force regulating valve 12 connects, and the hydraulic oil that oil pump 7 pumps enters in second pressure regulating valve 12 through working connection 13.When
When the oil inlet and outlet of two pressure-regulating valves 12 is in connected state, oil return opening is closed, into second pressure regulating valve 12
In hydraulic oil from oil outlet flow out, hydraulic oil again through the second pipeline 10 enter driven pulley 4 in；When second pressure regulating valve 12
Oil return opening and oil outlet when connected state, oil inlet is closed, and the hydraulic oil in driven pulley 4 enters through the second pipeline 10
It in second pressure regulating valve 12, is flowed out into the hydraulic oil in second pressure regulating valve 12 from oil return opening, driven pulley 4 is let out
The groove width of oil, the pulley groove of driven pulley 4 increases, and the winding radius of transmission belt 3 reduces.
As shown in Fig. 2, hydraulic executing system further includes connecting with first pressure regulating valve 14 and second pressure regulating valve 12
And hydraulic oil is guided to the cooling and lubricating oil circuit 9 that at specified parts specified parts are carried out with cooling and lubricating, cooling and lubricating oil circuit 9
It is connect with the oil return opening of the oil return opening of first pressure regulating valve 14 and second pressure regulating valve 12, driving pulley 2 and driven pulley 4
The hydraulic oil of middle outflow enters cooling and lubricating oil circuit 9 through first pressure regulating valve 14 and second pressure regulating valve 12 respectively, by cold
But lubricant passage way 9 guides hydraulic oil to specified parts, is used to carry out cooling and lubricating to component.
As shown in Fig. 2, being equipped with the first oil pressure sensor 16 for detecting oil pressure in first pressure oil circuit, the first oil pressure is passed
Sensor 16 is mounted on the first pipeline 15, is equipped with the second oil pressure sensor 8 for detecting oil pressure in second pressure oil circuit, and second
Oil pressure sensor 8 is mounted on the second pipeline 10.Therefore the essence in order to guarantee first pressure oil circuit and second pressure oil circuit oil pressure
Really control, oil pressure sensor is installed respectively on two oil circuits, be used to real-time detection practical pressure, it is ensured that driving pulley 2 and from
The pressure of movable belt pulley 4 accurately controls.
It is the same as example 1, in the present embodiment, is exported respectively by 7 output oil pressure of electric oil pump to working connection 13
To two pressure-regulating valves, the pressure oil circuit pressure of driving pulley 2 and driven pulley 4 is controlled by control pressure-regulating valve,
So that driving pulley 2 and driven pulley 4 continuously change with the radius that engages of transmission belt 3, also just realizes by changing pressure and change
The cone pulley axial position for becoming driving pulley 2 and driven pulley 4 is also achieved that variable speed to realize the change of transmission ratio.
As shown in Fig. 2, power transfer mechanism includes the first gear 17 connecting with driving motor 1 and nibbles with first gear 17
The second gear 11 closed and connect with stepless speed changing mechanism, first gear 17 and second gear 11 are roller gear and the first tooth
Wheel 17 diameter be less than second gear 11 diameter, the driving axis connection of first gear 17 and driving motor 1, second gear 11 and
The axis connection of driving pulley 2, second gear 11 and 2 synchronous rotary of driving pulley.
When needing biggish gear reduction ratio, embodiment one is due to only a pair of of The gear deceleration, so leading to this
To very big (since speed ratio is the ratio between gear diameter) that the diameter of gear gear wheel needs to do, cause FCL volume very big,
Bring complete vehicle structure Layout Problem；In the present embodiment, power transfer mechanism also functions to deceleration and increases square effect, by two groups of front and back
Gear slows down to realize, due to the speed ratio product that total reduction ratio is two groups of teeth wheel, so using single group gear speed in the present embodiment
Than can significantly reduce, the diameter of gear wheel can be made to reduce, so that FCL mechanism is more compact, while by motor speed
By being input to stepless transmission mechanism after primary speed-down The gear deceleration, turning for stepless transmission input terminal can be effectively reduced
Speed, while the load of stepless transmission input terminal is improved (since stepless transmission is under opposite middle and slow speed of revolution and middle high load
Working efficiency can be more excellent), so when using low torque pot motor system variable speed can be improved with this solution
The transmission efficiency of device system, to improve Full Vehicle System efficiency.
Embodiment three
As shown in figure 3, present embodiments providing a kind of electro-motive vehicle stepless speed variator system, including stepless speed changer
The hydraulic executing system of structure, power transfer mechanism and the gear ratio for adjusting stepless speed changing mechanism.Stepless speed changing mechanism includes
Driving pulley 2, driven pulley 4 and the transmission belt 3 for being set on driving pulley 2 and driven pulley 4 and be annular；Hydraulic execution
System include oil pump 7, for by hydraulic oil guide to driving pulley 2 and be used to adjust driving pulley 2 pulley groove groove width
One pressure oil circuit and for by hydraulic oil guide to driven pulley 4 and be used to adjust driven pulley 4 pulley groove groove width second
Pressure oil circuit；First pressure oil circuit and second pressure oil circuit are connect with oil pump 7, are equipped in first pressure oil circuit for adjusting oil pressure
First pressure regulating valve 14, the second pressure regulating valve 12 for adjusting oil pressure is equipped in second pressure oil circuit.Power transmitting
Mechanism for realizing the power transmitting between stepless speed changing mechanism and deceleration mechanism, power transfer mechanism and stepless speed changing mechanism and
The connection of deceleration mechanism.
As shown in figure 3, stepless speed changing mechanism is variable v-belt drive, one end of transmission belt 3 is wound on driving pulley 2
On, on driven pulley 4, the driving pulley 2 of stepless speed changing mechanism is connect the other end of transmission belt 3 with driving motor 1, is driven
Movable belt pulley 2 receives the power generated by driving motor 1, and driven pulley 4 is connect by power transfer mechanism with deceleration mechanism, power
Transmission mechanism receives the power that is transmitted by stepless speed changing mechanism, and deceleration mechanism is simultaneously connect and the deceleration mechanism plays and subtracts with differential mechanism
Speed increase square effect, deceleration mechanism and be one-stage gear mechanism, realize the transmitting of power, the deceleration mechanism include and power transmitting machine
The deceleration driving gear 5 of structure connection and be fixedly installed on the shell of differential mechanism and the deceleration engaged with deceleration driving gear 5 from
Moving gear 6.Driving motor 1 driving vehicle travel process in, driving motor 1 generate power will by stepless speed changing mechanism,
Power transfer mechanism, deceleration mechanism and differential mechanism are output to wheel, and stepless speed regulation can be realized by stepless transmission, realize
It is whole by making stepless transmission work be output to wheel raising after large transmission ratio is by the amplification of driving motor torque when low speed
The dynamic property of vehicle low speed, while in middle high speed, by reducing stepless transmission work by motor in lower transmission ratio
Revolving speed output, enables motor to work in middle and slow speed of revolution efficient region, which compares currently used single-speed deceleration device, no
Vehicle low-speed dynamic and grade climbing performance only can be improved, while the energy utilization rate of vehicle can be improved, and make motor not
It needs work in high speed area, power drive system can be substantially improved because the high rotary speed working bring vibrating noise of motor is asked
Topic, while the cost that vehicle substantially reduces driving motor and electric-control system to the high-revolving demand of motor can be reduced.
As shown in figure 3, identical with embodiment one and embodiment two, when adjusting of the gear ratio of stepless speed changing mechanism, passes through
What hydraulic executing system was realized, hydraulic executing system provides hydraulic oil to driving pulley 2 and driven pulley 4, realizes driving pulley 2
With the adjusting of the groove width size of driven pulley 4, the winding radius of transmission belt 3 is increased or reduced, and then realizes the tune of gear ratio
Section.For driving pulley 2, after entering hydraulic oil in driving pulley 2, under action of hydraulic force, the pulley groove of driving pulley 2
Groove width reduces, and the winding radius of transmission belt 3 increases；For driven pulley 4, after entering hydraulic oil in driven pulley 4, hydraulic
Under power effect, the groove width of the pulley groove of driven pulley 4 reduces, and the winding radius of transmission belt 3 increases.The speed change of stepless speed changing mechanism
The adjusting of ratio is realized by the consecutive variations of the winding radius of transmission belt 3.
As shown in figure 3, first pressure regulating valve 14 be two-position three way magnetic valve, have an oil inlet, one it is fuel-displaced
Mouth and an oil return opening, first pressure oil circuit further includes the first pipeline connecting with first pressure regulating valve 14 and driving pulley 2
15, first pressure regulating valve 14 is used to adjust the oil pressure of the first pipeline 15, one end of the first pipeline 15 and first pressure regulating valve
14 oil outlet connection, the other end of the first pipeline 15 are connect with driving pulley 2, and oil pump 7 passes through working connection 13 and first pressure
The oil inlet of regulating valve 14 connects, and the hydraulic oil that oil pump 7 pumps enters in first pressure regulating valve 14 through working connection 13, oil pump 7
For electric oil pump.When the oil inlet and outlet of first pressure regulating valve 14 is in connected state, oil return opening is closed, into the
Hydraulic oil in one pressure-regulating valve 14 is flowed out from oil outlet, and hydraulic oil enters in driving pulley 2 through the first pipeline 15 again；When
The oil return opening and oil outlet of one pressure-regulating valve 14 when connected state, close by oil inlet, the hydraulic oil warp in driving pulley 2
First pipeline 15 enters in first pressure regulating valve 14, flows out into the hydraulic oil in first pressure regulating valve 14 from oil return opening,
Driving pulley 2 carries out draining, and the groove width of the pulley groove of driving pulley 2 increases, and the winding radius of transmission belt 3 reduces.
As shown in figure 3, second pressure regulating valve 12 is also two-position three way magnetic valve, go out with an oil inlet, one
Hydraulic fluid port and an oil return opening, second pressure oil circuit further include the second pipe connecting with second pressure regulating valve 12 and driven pulley 4
Road 10, second pressure regulating valve 12 are used to adjust the oil pressure of the second pipeline 10, and one end of the second pipeline 10 and second pressure are adjusted
The oil outlet of valve 12 connects, and the other end of the second pipeline 10 is connect with driven pulley 4, and oil pump 7 passes through working connection 13 and the second pressure
The oil inlet of force regulating valve 12 connects, and the hydraulic oil that oil pump 7 pumps enters in second pressure regulating valve 12 through working connection 13.When
When the oil inlet and outlet of two pressure-regulating valves 12 is in connected state, oil return opening is closed, into second pressure regulating valve 12
In hydraulic oil from oil outlet flow out, hydraulic oil again through the second pipeline 10 enter driven pulley 4 in；When second pressure regulating valve 12
Oil return opening and oil outlet when connected state, oil inlet is closed, and the hydraulic oil in driven pulley 4 enters through the second pipeline 10
It in second pressure regulating valve 12, is flowed out into the hydraulic oil in second pressure regulating valve 12 from oil return opening, driven pulley 4 is let out
The groove width of oil, the pulley groove of driven pulley 4 increases, and the winding radius of transmission belt 3 reduces.
As shown in figure 3, hydraulic executing system further includes connecting with first pressure regulating valve 14 and second pressure regulating valve 12
And hydraulic oil is guided to the cooling and lubricating oil circuit 9 that at specified parts specified parts are carried out with cooling and lubricating, cooling and lubricating oil circuit 9
It is connect with the oil return opening of the oil return opening of first pressure regulating valve 14 and second pressure regulating valve 12, driving pulley 2 and driven pulley 4
The hydraulic oil of middle outflow enters cooling and lubricating oil circuit 9 through first pressure regulating valve 14 and second pressure regulating valve 12 respectively, by cold
But lubricant passage way 9 guides hydraulic oil to specified parts, is used to carry out cooling and lubricating to component.
As shown in figure 3, being equipped with the first oil pressure sensor 16 for detecting oil pressure in first pressure oil circuit, the first oil pressure is passed
Sensor 16 is mounted on the first pipeline 15, is equipped with the second oil pressure sensor 8 for detecting oil pressure in second pressure oil circuit, and second
Oil pressure sensor 8 is mounted on the second pipeline 10.Therefore the essence in order to guarantee first pressure oil circuit and second pressure oil circuit oil pressure
Really control, oil pressure sensor is installed respectively on two oil circuits, be used to real-time detection practical pressure, it is ensured that driving pulley 2 and from
The pressure of movable belt pulley 4 accurately controls.
It is identical with embodiment one and embodiment two, in the present embodiment, by 7 output oil pressure of electric oil pump to working connection
13 are respectively outputted to two pressure-regulating valves, and the pressure of driving pulley 2 and driven pulley 4 is controlled by control pressure-regulating valve
Oil circuit pressure also passes through change with regard to realizing so that driving pulley 2 and driven pulley 4 continuously change with the radius that engages of transmission belt 3
Pressure is also achieved that change the cone pulley axial position of driving pulley 2 and driven pulley 4 to realize the change of transmission ratio
Variable speed.
As shown in figure 3, power transfer mechanism includes the first gear 17 and and first gear connecting with stepless speed changing mechanism
17 engagements and the second gear 11 connecting with deceleration mechanism, first gear 17 and second gear 11 are roller gear and the first tooth
Wheel 17 diameter be less than second gear 11 diameter, the axis connection of first gear 17 and driven pulley 4, first gear 17 with it is driven
4 synchronous rotary of belt wheel, second gear 11 are to be fixedly and coaxially connected with deceleration driving gear 5.
When the driving motor that vehicle uses is slow-speed of revolution high torque motor, (since stepless transmission is low turn in relatively
Fast and middle high working under load efficiency can be more excellent), embodiment two is compared, due to not to motor output speeds in the present embodiment
Further lower revolving speed, while torque is further amplified (stepless transmission can be disliked in the slow-speed of revolution and high working under load efficiency
Change), the transmission efficiency of stepless transmission system can be made to work in most efficient region, to improve Full Vehicle System efficiency.
The present invention is exemplarily described in conjunction with attached drawing above.Obviously, present invention specific implementation is not by above-mentioned side
The limitation of formula.As long as using the improvement for the various unsubstantialities that the inventive concept and technical scheme of the present invention carry out；Or not
It is improved, above-mentioned conception and technical scheme of the invention are directly applied into other occasions, in protection scope of the present invention
Within.
Claims (10)
1. electro-motive vehicle stepless speed variator system characterized by comprising
Stepless speed changing mechanism comprising driving pulley, driven pulley and the transmission being set on driving pulley and driven pulley
Band；And
Hydraulic executing system comprising oil pump, for guiding hydraulic oil to driving pulley and being used to adjust driving pulley groove width
First pressure oil circuit and for by hydraulic oil guide to driven pulley and be used to adjust driven pulley groove width second pressure oil
Road；First pressure oil circuit and second pressure oil circuit are connect with oil pump, and first for adjusting oil pressure is equipped in first pressure oil circuit
Pressure-regulating valve is equipped with the second pressure regulating valve for adjusting oil pressure in second pressure oil circuit.
2. electro-motive vehicle stepless speed variator system according to claim 1, which is characterized in that the first pressure is adjusted
Valve is two-position three way magnetic valve.
3. electro-motive vehicle stepless speed variator system according to claim 1, which is characterized in that the second pressure is adjusted
Valve is two-position three way magnetic valve.
4. electro-motive vehicle stepless speed variator system according to any one of claims 1 to 3, which is characterized in that described hydraulic
Execution system further includes connecting with the first pressure regulating valve and the second pressure regulating valve and hydraulic oil is guided to specified
At component specified parts are carried out with the cooling and lubricating oil circuit of cooling and lubricating.
5. electro-motive vehicle stepless speed variator system according to any one of claims 1 to 4, which is characterized in that described first
The first oil pressure sensor for detecting oil pressure is equipped in pressure oil circuit.
6. electro-motive vehicle stepless speed variator system according to any one of claims 1 to 5, which is characterized in that described second
The second oil pressure sensor for detecting oil pressure is equipped in pressure oil circuit.
7. electro-motive vehicle stepless speed variator system according to any one of claims 1 to 6, which is characterized in that further include:
Power transfer mechanism, for realizing the power transmitting between driving motor and the stepless speed changing mechanism.
8. electro-motive vehicle stepless speed variator system according to claim 7, which is characterized in that the power transfer mechanism
The for engaging including the first gear that is connect with the driving motor and with first gear and being connect with the stepless speed changing mechanism
Two gears.
9. electro-motive vehicle stepless speed variator system according to any one of claims 1 to 6, which is characterized in that further include:
Power transfer mechanism, for realizing the power transmitting between stepless speed changing mechanism and deceleration mechanism.
10. electro-motive vehicle stepless speed variator system according to claim 9, which is characterized in that the power transmits machine
Structure includes the first gear connecting with the stepless speed changing mechanism and engages with first gear and connect with the deceleration mechanism
Second gear.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201811645331.5A CN109611520B (en) | 2018-12-30 | 2018-12-30 | Continuously variable transmission system for electrically driven vehicle |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201811645331.5A CN109611520B (en) | 2018-12-30 | 2018-12-30 | Continuously variable transmission system for electrically driven vehicle |
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| CN109611520A true CN109611520A (en) | 2019-04-12 |
| CN109611520B CN109611520B (en) | 2024-06-21 |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112628366A (en) * | 2019-10-09 | 2021-04-09 | 吴健铭 | Speed change mechanism of electric locomotive |
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| US20150001031A1 (en) * | 2011-12-30 | 2015-01-01 | Shenzhen Byd Auto R&D Company Limited | Driving system and electric vehicle comprising the same |
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| CN109611520B (en) | 2024-06-21 |
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