CN107859723A - A kind of multi-mode hydraulic machinery stepless speed change device - Google Patents
A kind of multi-mode hydraulic machinery stepless speed change device Download PDFInfo
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- CN107859723A CN107859723A CN201711163954.4A CN201711163954A CN107859723A CN 107859723 A CN107859723 A CN 107859723A CN 201711163954 A CN201711163954 A CN 201711163954A CN 107859723 A CN107859723 A CN 107859723A
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- speed change
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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
- F16H47/00—Combinations of mechanical gearing with fluid clutches or fluid gearing
- F16H47/02—Combinations of mechanical gearing with fluid clutches or fluid gearing the fluid gearing being of the volumetric type
- F16H47/04—Combinations of mechanical gearing with fluid clutches or fluid gearing the fluid gearing being of the volumetric type the mechanical gearing being of the type with members having orbital motion
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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
- F16H47/00—Combinations of mechanical gearing with fluid clutches or fluid gearing
- F16H47/02—Combinations of mechanical gearing with fluid clutches or fluid gearing the fluid gearing being of the volumetric type
- F16H47/04—Combinations of mechanical gearing with fluid clutches or fluid gearing the fluid gearing being of the volumetric type the mechanical gearing being of the type with members having orbital motion
- F16H2047/045—Combinations of mechanical gearing with fluid clutches or fluid gearing the fluid gearing being of the volumetric type the mechanical gearing being of the type with members having orbital motion the fluid gearing comprising a plurality of pumps or motors
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- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
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Abstract
The present invention relates to Vehicle Engineering drive apparatus field, specifically a kind of multi-mode hydraulic machinery stepless speed change device.Including housing and the double planet wheel rows of mixing machinery speed changer and hydraulic transformer that are arranged in parallel in housing, it is additionally provided with housing for controlling the independent speed change output of double planet wheel rows of mixing machinery speed changer, the independent speed change output of control hydraulic transformer or control double planet wheel rows of mixing machinery speed changer and the pattern gear of hydraulic transformer mixing speed change output to switch execution system；It is contemplated that being not only able to realize large-scale stepless speed regulation performance, and it disclosure satisfy that multi-mode demand of the vehicle in different operating mode downward drivings.
Description
Technical field
The present invention relates to Vehicle Engineering drive apparatus field, specifically a kind of multi-mode hydraulic machinery variable speed dress
Put.
Background technology
Hydraulic drive, which has, arranges that convenient, power density is big, output torque and rotating speed are not influenceed, easily by input speed
The advantages that realizing stepless speed regulation and automatically controlling, but the weak points such as transmission efficiency is low simultaneously be present, especially at a high speed and low speed
Transmission condition, this low deficiency of transmission efficiency are more prominent.Gear mechanism transmission have transmit motion accurately and reliably, instantaneous transmission
Than it is constant, compact-sized, can be achieved compared with big speed ratio, transmit the advantages that power big and transmission efficiency, but be not easy to realize automatic
Speed change, it can not more realize variable speed.In operation, transmission system generally requires to transmit relatively high power medium-and-large-sized engineering machinery,
And requirement can carry out efficient speed and torque conversion according to working condition and load change to power source.Single use
Machine driving or hydraulic drive are all difficult to perfection and meet requirement of the medium-and-large-sized engineering machinery to transmission system.
The content of the invention
The present invention is intended to provide a kind of multi-mode hydraulic machinery stepless speed change device, the device is not only able to realize on a large scale
Stepless speed regulation performance, and disclosure satisfy that multi-mode demand of the vehicle in different operating mode downward drivings.
In order to solve the above technical problems, the technical solution adopted by the present invention is：A kind of stepless change of multi-mode hydraulic machinery
Speed variator, including housing and the double planet wheel rows of mixing machinery speed changer and hydraulic transformer that are arranged in parallel in housing, in housing
It is additionally provided with for controlling the independent speed change output of double planet wheel rows of mixing machinery speed changer, the independent speed change output of control hydraulic transformer or control
Double planet wheel rows of mixing machinery speed changer and the pattern gear switching execution system of hydraulic transformer mixing speed change output；The double planet wheel rows of mixing
Mechanical transmission includes the preceding planet row being arranged in series by same root solar shaft and rear planet row；Solar shaft is opposite to each other in rear planet
One end of row is arranged on hull outside and for being connected as input shaft with driving engine；The preceding planet row includes fixation and set
Put the preceding sun gear on the solar shaft, sun gear and preceding before the front ring gear being rotatably provided in housing, engagement are connected to
Multiple preceding planetary gears between gear ring and the preceding planet carrier being arranged on multiple preceding planetary gears, are coaxially fixed on preceding planet carrier
Provided with first gear；The rear sun gear that planet row includes being fixedly installed on the solar shaft described afterwards, it is rotatably provided in shell
Rear gear ring, engagement in body are connected to multiple rear planetary gears between rear sun gear and rear gear ring and are arranged on multiple rear planets
Rear planet carrier on wheel, second gear is coaxially fixed with rear gear ring, it is coaxial on rear planet carrier on there is one end to be located in
The output shaft of hull outside, the part on output shaft in housing are fixed with the 3rd gear.
Preferably, the hydraulic transformer includes volume adjustable hydraulic pump and the variable delivery hydraulic horse being connected by hydraulic circuit
Reach, the 4th gear is fixed with the input shaft of volume adjustable hydraulic pump, and the 4th gear engages connection with first gear, in variable
On the output shaft of hydraulic motor can clutch be provided with engage with second gear connect the 5th gear and engage company with the 3rd gear
The 6th gear connect.
Preferably, the pattern gear switching execution system includes being arranged in inner walls and for controlling front ring gear to turn
Dynamic the first brake, be arranged in inner walls and for the second brake of ring gear against rotation after controlling, be arranged on the 5th tooth
Take turns the first clutch between variable hydraulic motor output shaft and be arranged on the 6th gear and variable hydraulic motor output shaft
Between second clutch.
Preferably, the multi-mode hydraulic machinery stepless speed change device is also held including one for the switching of control model gear
The hydraulic control system of row system, volume adjustable hydraulic pump and variable hydraulic motor, hydraulic control system include hydraulic oil container, repairing
Pump, perform hydraulic pump, brake magnetic valve, clutch solenoid valve, the first servo for adjusting variable delivery hydraulic pump output flow
Variable device and the second servo variable displacement device for adjusting variable hydraulic motor input flow rate；Slippage pump and execution hydraulic pump
Arrival end be connected respectively with hydraulic oil container, the port of export of slippage pump passes through repairing check valve and high-pressure safety valve and variable liquid
Hydraulic circuit between press pump and variable hydraulic motor is connected；The clutch solenoid valve, brake magnetic valve, first are watched
Take variable device and the second servo variable displacement device to be connected with performing the port of export of hydraulic pump respectively, brake magnetic valve is three
Four-way reversing valve, two of which interface in brake magnetic valve four-way interface is respectively with performing the port of export and hydraulic pressure of hydraulic pump
Fuel tank connects, and two other interface passes through one-way throttle valve and the first brake execution machine for controlling the first brake respectively
Structure and for controlling the second brake executing agency of second brake to connect；Clutch solenoid valve is with H type middle-position machines
Can three position four-way directional control valve, two of which interface in clutch solenoid valve four-way interface is respectively with performing the outlet of hydraulic pump
End connects with hydraulic oil container, two other interface with for control one of first clutch and second clutch pair of oil pockets from
Clutch executing agency connects.
Preferably, in the braking electromagnetic valve and perform and be provided with and hydraulic pressure on connecting line between the port of export of hydraulic pump
The main overflow valve of fuel tank connection.
Beneficial effect
A kind of multi-mode hydraulic machinery stepless speed change device of the present invention at work, by the preceding planet row of series connection and after
Planet row is used as mechanical transmission path, is used as hydraulic drive road by the volume adjustable hydraulic pump and variable hydraulic motor of series connection
Footpath, the logicality of each brake and each clutch is controlled to realize purely mechanic pattern, hydraulic pressure by hydraulic control system
Transmission conversion under mechanical mixture dynamic mode and pure hydraulic pressure pattern, improves slewing range, largely meets large-scale
The multi-state work requirements such as the long range transition operation of engineering machinery.Purely mechanic pattern transmission efficiency, can be used for long-distance height
The transition traveling of speed；Hydraulic machinery hybrid mode can realize stepless speed regulation performance on the basis of machine driving, adapt to
Property it is strong, be adapted to most of duty requirements；Although pure hydraulic pressure pattern transmission efficiency is low compared with hydraulic machinery hybrid mode, energy
Engine is enough set to operate at high efficient area all the time, output torque rotating speed is not influenceed by input torque rotating speed, disclosure satisfy that engineering
The power demand of mechanical big load low speed.
A kind of multi-mode hydraulic machinery stepless speed change device of the present invention relative to applying more hydraulic press at present
Tool buncher, on the premise of more multi-mode is met, structure is simpler compact, and the switching control of multi-state multi-mode is more
Flexibly, maintain working truck speed under different phase and switch to obtain stationarity, reduce impact, improve the power of vehicle
Property.And the present apparatus need not set reverse gear apparatus, under pure hydraulic pressure pattern, Hydraulic Elements can meet rotary speed-torque coordinate
The four-quadrant operation demand of plane, advance with retreating performance almost symmetry, and simple hydraulic machinery hybrid transmission is usually
To set and reverse gear in rearmounted gearbox, to evade the area's self-locking situation of reversing gear being likely to occur during use.
Brief description of the drawings
Fig. 1 is schematic structural view of the invention；
Fig. 2 is the schematic diagram of the hydraulic control system part of the present invention；
Marked in figure：1st, the first brake, 2, front ring gear, 3, preceding planetary gear, 4, volume adjustable hydraulic pump, the 5, the 4th gear, 6, the sun
Axle, 7, housing, 8, first gear, 9, preceding sun gear, 10, preceding planet carrier, 11, second brake, 12, rear planetary gear, 13, after too
Sun wheel, 14, rear planet carrier, 15, second gear, the 16, the 3rd gear, 17, output shaft, 18, variable hydraulic motor, the 19, the 5th tooth
Wheel, 20, second clutch, the 21, the 6th gear, 22, first clutch, 23, rear gear ring, 24, hydraulic oil container, 25, slippage pump,
26th, hydraulic pump is performed, 27, brake magnetic valve, 28, clutch solenoid valve, the 29, first servo variable displacement device, the 30, second servo
Variable device, 31, repairing check valve, 32, high-pressure safety valve, 33, one-way throttle valve, the 34, first brake executing agency, 35,
Second brake executing agency, 36, double oil pocket clutch actuating mechanisms, 37, main overflow valve.
Embodiment
As shown in Figures 1 and 2, a kind of multi-mode hydraulic machinery stepless speed change device of the invention, including housing 7 and simultaneously
Connection is arranged on double planet wheel rows of mixing machinery speed changer and hydraulic transformer in housing 7, is additionally provided with housing 7 for controlling double-planet
Arrange the output of mechanical transmission independent speed change, the independent speed change output of control hydraulic transformer or control double planet wheel rows of mixing machinery speed changer and
The pattern gear switching execution system of hydraulic transformer mixing speed change output.
Double planet wheel rows of mixing machinery speed changer includes the preceding planet row being arranged in series by same root solar shaft 6 and rear planet row；
Solar shaft 6 is arranged on the outside of housing 7 and for being connected as input shaft with driving engine in one end of rear planet row opposite to each other；Before
Planet row connects including the preceding sun gear 9 being fixedly installed on solar shaft 6, the front ring gear 2 being rotatably provided in housing 7, engagement
It is connected to preceding multiple preceding planetary gears 3 between sun gear 9 and front ring gear 2 and the preceding planet carrier being arranged on multiple preceding planetary gears 3
10, coaxially it is fixed with first gear 8 on preceding planet carrier 10；Planet row is included after being fixedly installed on solar shaft 6 too afterwards
Sun wheel 13, the rear gear ring 23 that is rotatably provided in housing 7, engagement are connected to multiple between rear sun gear 13 and rear gear ring 23
Planetary gear 12 and the rear planet carrier 14 being arranged on multiple rear planetary gears 12 afterwards, second is coaxially fixed with rear gear ring 23
Gear 15, it is coaxial on rear planet carrier 14 on have the output shaft 17 that one end is located in outside housing 7, shell is located on output shaft 17
Part in body 7 is fixed with the 3rd gear 16.
Hydraulic transformer includes the volume adjustable hydraulic pump 4 and variable hydraulic motor 18 being connected by hydraulic circuit, is becoming
Measure and be fixed with the 4th gear 5 on the input shaft of hydraulic pump 4, and the 4th gear 5 engages connection with first gear 8, in variable liquid
On the output shaft 17 of pressure motor 18 can clutch be provided with engage with second gear 15 connect the 5th gear 19 and with the 3rd gear
6th gear 21 of 16 engagement connections.
Pattern gear switching execution system includes being arranged on the inwall of housing 7 and for controlling the first of the rotation of front ring gear 2
Brake 1, the second brake 11 for being arranged on the inwall of housing 7 and being rotated for gear ring 23 after controlling, it is arranged on the 5th gear
First clutch 22 between 19 and the output shaft 17 of variable hydraulic motor 18 and it is arranged on the 6th gear 21 and variable delivery hydraulic horse
Second clutch 20 up between 18 output shafts 17.
Multi-mode hydraulic machinery stepless speed change device also includes one and is used for control model gear switching execution system, variable
The hydraulic control system of hydraulic pump 4 and variable hydraulic motor 18, hydraulic control system include hydraulic oil container 24, slippage pump 25,
Perform hydraulic pump 26, brake magnetic valve 27, clutch solenoid valve 28, for adjust the output flow of volume adjustable hydraulic pump 4 first
Servo variable displacement device 29 and the second servo variable displacement device 30 for adjusting the input flow rate of variable hydraulic motor 18；Slippage pump 25
Be connected respectively with hydraulic oil container 24 with the arrival end for performing hydraulic pump 26, the port of export of slippage pump 25 by repairing check valve 31 with
And the hydraulic circuit between high-pressure safety valve 32 and volume adjustable hydraulic pump 4 and variable hydraulic motor 18 is connected；Clutch electromagnetism
Valve 28, brake magnetic valve 27, the first servo variable displacement device 29 and the second servo variable displacement device 30 are respectively with performing hydraulic pump
26 port of export connection, in braking electromagnetic valve and perform and be provided with and hydraulic oil on connecting line between the port of export of hydraulic pump 26
The main overflow valve 37 that case 24 connects.Brake magnetic valve 27 is three position four-way directional control valve, in the four-way interface of brake magnetic valve 27
Two of which interface respectively with perform hydraulic pump 26 the port of export and hydraulic oil container 24 be connected, two other interface passes through respectively
One-way throttle valve 33 is with the first brake executing agency 34 for the first brake 1 of control and for controlling second brake
11 second brake executing agency 35 connects；Clutch solenoid valve 28 is the three position four-way directional control valve with H type Median Functions,
Two of which interface in the four-way interface of clutch solenoid valve 28 is respectively with performing the port of export and hydraulic oil container 24 of hydraulic pump 26
Connection, two other interface perform with a double oil pocket clutches for controlling first clutch 22 and second clutch 20
Mechanism 36 connects.
The present invention punishes two-way from the rotating speed that solar shaft 6 inputs in preceding planet row, wherein being all the way hydraulic pressure road, passes through variable
The discharge capacity of hydraulic pump 4 and variable hydraulic motor 18 is adjusted, and rotating speed is delivered into rear planet row, and another way is mechanical road, and input turns
Speed is directly delivered to the rear sun gear 13 of rear planet row, then rotating speed is delivered to the rear planet carrier 14 of rear planet row, i.e. device is defeated
Shaft 17 is connected with rear planet carrier 14, obtains final output rotating speed.
The various modes control logic such as following table of the hydraulic machinery stepless speed change device：
| Pattern | First brake | Second brake | First clutch | Second clutch |
| Purely mechanic pattern | × | ● | × | × |
| Hybrid mode | ● | × | ● | × |
| Pure hydraulic pressure pattern | ● | × | × | ● |
"●" represents to play a role；"×" represents not play a role
If the characterisitic parameter of preceding planet row is, the characterisitic parameter of rear planet row is, then preceding planet be booked sufficient characteristic equation, rear planet row meets characteristic equation。
Wherein,Respectively preceding sun gear 9, front ring gear 2, the rotating speed of preceding planet carrier 10；Respectively rear sun gear 13, rear gear ring 23, the rotating speed of rear planet carrier 14.
The first brake 1 is set between the front ring gear 2 and housing 7 of preceding planet row, rear planet row rear gear ring 23 with
Second brake 11 is set between housing 7, hydraulic machinery is realized by the opening and closing for adjusting the first brake 1 and second brake 11
Switching between stepless speed change device various modes.
6th tooth of a 5th 19, low speed of gear of one high speed is installed on the armature spindle of variable hydraulic motor 18
Take turns 21 and for respectively by the 5th gear 19 of high speed and the armature spindle of the 6th gear 21 and variable hydraulic motor 18 of low speed
The first clutch 22 and second clutch 20 being fixedly connected, by the opening and closing for controlling first clutch 22 and second clutch 20
To realize that the transmission of the 6th gear 21 and the 3rd gear 16 of the 5th gear 19 of high speed and second gear 15 either low speed connects
Connect.
The not locking of first brake 1, front ring gear 2 separate with housing 7, and preceding each component of planet row is in free state, now
Volume adjustable hydraulic pump 4 inputs without rotating speed, and hydraulic pressure road does not have power transmission, then engine power row after preceding planet row is delivered to
The rear sun gear 13 of star row；The locking of second brake 11, rear gear ring 23 are fixed on housing 7, and rear planet row is that single input list is defeated
Do well, cut-off clutch magnetic valve 28, the left and right chamber oil pressure of double oil pocket clutch actuating mechanisms 36 is equal, and piston rod is in spring
In the presence of return to middle position state, now first clutch 22 and second clutch 20 do not play a role, power directly by
Rear sun gear 13 is delivered to rear planet carrier 14 and exported, and now speed change gear is in purely mechanic transmission condition.
The locking of first brake 1, front ring gear 2 are fixed on housing 7, and preceding planet row is single-input single-output state, is started
Mechanomotive force is realized at preceding planet row divides square, all the way through hydraulic pressure road transmission, is transmitted all the way through mechanical road；Second brake 11 does not close
Lock, first clutch 22 engage, and rear planet row inputs single output states, fiveth gear 19 of the hydraulic pressure road power Jing Guo high speed for two
Rear planet row is delivered to, the output speed of planet carrier 14 after the discharge of rear planet realizes that power flow concentration, final power pass through, this time-varying
Speed variator is in machinery and hydraulic hybrid transmission mode, adjusts volume adjustable hydraulic pump 4 and variable hydraulic motor 18 in hydraulic pressure road
Discharge capacity, so as to change the size and Orientation of hydraulic drive branch road output speed, so as to realize to the rotating speed of device output shaft 17
Control, mixed drive can be divided into speedup and two kinds of operating modes of slowing down.
The locking of first brake 1, front ring gear 2 are fixed on housing 7, and preceding planet row is single-input single-output state, is started
Mechanomotive force is realized at preceding planet row divides square, all the way through hydraulic pressure road transmission, the planet row after mechanical road is delivered to all the way；Second system
The dynamic not locking of device 11, second clutch 20 engage, and rear gear ring 23 is free state, so as to which mechanical road power passes at rear planet row
Interruption is passed, hydraulic pressure road power is delivered to the 3rd gear 16 by the 6th gear 21 of low speed, finally from the output speed of output shaft 17.
Now speed change gear is in pure hydraulic stepless transmission mode, adjusts volume adjustable hydraulic pump 4 and variable delivery hydraulic horse in hydraulic drive branch road
Up to 18 discharge capacity, change the size and Orientation of hydraulic pressure road output speed, device output shaft 17 is advanced or retreated so as to realize
Stepless speed regulation control.
Under purely mechanic pattern, the resultant gear ratio of speed change gearFor device output speedWith input speedIt
Than that is,, under this kind of pattern,According to rear planet row
Characteristic equation can obtain, therefore the resultant gear ratio that can obtain speed change gear is：.In vehicle operation, when purely mechanic transmission disclosure satisfy that job requirements, should try one's best makes
With purely mechanic transmission condition, to obtain higher transmission efficiency and speed.
, can be on the basis of purely mechanic transmission by adjusting variable liquid in hydraulic pressure road under mechanical-hydraulic hybrid mode
The discharge capacity of press pump 4 and variable hydraulic motor 18 realizes the function of stepless speed regulation.If 5 turns of the rotating speed of first gear 8 and the 4th gear
The ratio between speed is, the ratio between the rotating speed of the 5th gear 19 of high speed and the rotating speed of second gear 15 are, volume adjustable hydraulic pump 4 and variable liquid
The ratio between rotating speed of pressure motor 18 is, under this operating mode,According to
The characteristic equation of preceding planet row can obtain：The rotating speed of preceding planet carrier 10, the rotating speed of variable hydraulic motor 18 are that second gear 15 turns
Speed is, can be obtained according to the characteristic equation of preceding planet row：
, conditions above, which is brought into, to be obtained：The resultant gear ratio of speed change gear:。
This kind of pattern can meet power demand of the engineering machinery in high speed transition operation.
Under pure hydraulic drive pattern, volume adjustable hydraulic pump 4 and variable hydraulic motor 18 are tandem working relation, engine
Whole power only pass through volume adjustable hydraulic pump 4 and variable hydraulic motor 18 by hydraulic pressure road transmission, the now gearratio of whole system
Discharge capacity adjust and realize.If the ratio between the rotating speed of the 6th gear 21 of low speed and the rotating speed of the 3rd gear 16 are, disregarding hydraulic pressure road
In the case of pressure and leakage loss, the resultant gear ratio of speed change gear：.This kind
Pattern can meet engineering machinery low-speed big operating mode and reverse gear traveling the needs of.
The hydraulic control system that multi-mode hydraulic machinery stepless speed change device uses, it is main to complete to volume adjustable hydraulic pump 4, become
Measure the control of hydraulic motor 18, the first brake 1, second brake 11, second clutch 20 and first clutch 22.Wherein,
The hydraulic control circuit of volume adjustable hydraulic pump 4 and variable hydraulic motor 18 performs hydraulic cylinder, two by two electric proportional valves, two swash plates
Individual 31, one, the repairing check valve of high-pressure safety valve 32, two flushing valve, a flushing overflow valve and a cooling device composition；
The hydraulic control of first brake 1 and second brake 11 is by 27, two one-way throttle valves 33 of a brake magnetic valve
Formed with the first brake executing agency 34, second brake executing agency 35.
Control to volume adjustable hydraulic pump 4 and the discharge capacity of variable hydraulic motor 18 is realized by electric proportional valve, by proportioning valve
Control signal is inputted respectively, so as to control the swash plate of volume adjustable hydraulic pump 4 to perform the piston rod position and variable hydraulic motor of hydraulic cylinder
18 swash plates perform the piston rod position of hydraulic cylinder, so as to realize the displacement control to volume adjustable hydraulic pump 4 and variable hydraulic motor 18,
So as to obtain required gearratio.
Control to first clutch 22 and second clutch 20 by the three-position four-way electromagnetic directional valve of H type Median Functions Lai
Realize, by inputting control signal to clutch solenoid valve 28, so as to change the liquid for flowing into double oil pocket clutch actuating mechanisms 36
Force feed flow direction, and then change the piston rod position of double oil pocket clutch actuating mechanisms 36, final piston rod driving clutch comes real
Existing first clutch 22 and second clutch 20 respectively with the engagement of the 5th gear 19 of high speed and the 6th gear 21 of low speed and
Separation.It is embodied as：Under hydraulic machinery hybrid mode, in the presence of electric signal, the valve element of clutch solenoid valve 28 is left
Move, now double hydraulic cylinder left chamber oil-feeds of oil pocket clutch actuating mechanism 36, pressure rise, right chamber is fuel-displaced, and pressure reduces, so as to living
Stopper rod against the force of the spring moves right, and driving second clutch 20 engages with the 6th gear 21 of low speed, first clutch 22
Separated with the 5th gear 19 of high speed, realize the power transmission under hybrid mode；Under pure hydraulic pressure pattern, in the work of electric signal
Under, clutch solenoid valve 28 moves to right, now double hydraulic cylinder right chamber oil-feeds of oil pocket clutch actuating mechanism 36, pressure rise, left
Chamber is fuel-displaced, and pressure reduces, so as to which piston rod against the force of the spring is moved to the left, driving first clutch 22 and the 5th tooth of high speed
The engagement of wheel 19, second clutch 20 separate with the 6th gear 21 of low speed, realize the power transmission under pure hydraulic pressure pattern；It is purely mechanic
Under pattern, flowed into without electric current, the piston rod of double hydraulic cylinders of oil pocket clutch actuating mechanism 36 recovers under spring force
Centre position, so that first clutch 22 is not engaged with the 5th gear 19 of high speed and second clutch 20 and the 6th of low speed
Gear 21 does not engage, and realizes the power transmission under purely mechanic pattern.
Control to the first brake 1 and second brake 11 is all by a shared three-position four-way electromagnetic directional valve and one
Individual one-way throttle valve 33 is realized, by giving brake magnetic valve 27 to input control signal, the first brake is flowed into so as to change
The hydraulic oil of executing agency 34 and second brake executing agency 35 flows to, and then changes the first brake executing agency 34 and the
The piston rod position of two brake executing agencies 35, final piston rod driving brake come realize front ring gear 2 and rear gear ring 23 with
The locking and unblock of housing 7.It is embodied as：Under purely mechanic pattern, under electric signal effect, the valve element of brake magnetic valve 27 is right
Move, hydraulic oil flows into the oil pocket of second brake executing agency 35, oil pocket pressure by one-way throttle valve 33 corresponding with rear gear ring 23
Power raises, and promotes piston rod against the force of the spring to stretch out oil cylinder, and driving second brake 11 implements locking braking to rear gear ring 23,
Meanwhile the high-pressure oil flow oil return box in the oil pocket of the first brake executing agency 34, pressure reduce, work of the piston rod in spring force
Oil cylinder is retracted under, so as to implement unlocking motion to front ring gear 2 to the first brake 1.Under hydraulic machinery hybrid mode,
Under electric signal effect, the valve element of brake magnetic valve 27 is moved to left, and hydraulic oil is flowed by one-way throttle valve 33 corresponding with front ring gear 2
Enter the oil pocket of the first brake executing agency 34, oil pocket pressure rise, promote piston rod against the force of the spring to stretch out oil cylinder, driving the
One brake 1 implements locking braking to front ring gear 2, meanwhile, the high-pressure oil flow oil return in the oil pocket of second brake executing agency 35
Case, pressure reduce, and piston rod is retracted to oil cylinder in the presence of spring force, so as to which second brake 11 is implemented to rear gear ring 23
Unlocking motion.Under pure hydraulic pressure pattern, the course of work and the hydraulic machinery hybrid power mould of the first brake 1 and second brake 11
The course of work of formula is the same, will not be repeated here.
Claims (5)
- A kind of 1. multi-mode hydraulic machinery stepless speed change device, it is characterised in that：Including housing（7）And it is arranged in parallel in housing （7）Interior double planet wheel rows of mixing machinery speed changer and hydraulic transformer, in housing（7）Inside it is additionally provided with for controlling double planet wheel rows of mixing machinery to become The fast independent speed change of device exports, the independent speed change of control hydraulic transformer exports or control double planet wheel rows of mixing machinery speed changer and hydraulic speed-changing The pattern gear switching execution system of device mixing speed change output；The double planet wheel rows of mixing machinery speed changer includes passing through the same root sun Axle（6）The preceding planet row and rear planet row being arranged in series；Solar shaft（6）Opposite to each other housing is arranged in one end of rear planet row（7） Outside simultaneously is used to be connected with driving engine as input shaft；The preceding planet row includes being fixedly installed on the solar shaft（6） On preceding sun gear（9）, be rotatably provided in housing（7）In front ring gear（2）, engagement be connected to preceding sun gear（9）And nipper Circle（2）Between multiple preceding planetary gears（3）And it is arranged on multiple preceding planetary gears（3）On preceding planet carrier（10）, in preceding planet Frame（10）On be coaxially fixed with first gear（8）；Planet row includes being fixedly installed on the solar shaft after described（6）On after Sun gear（13）, be rotatably provided in housing（7）In rear gear ring（23）, engagement be connected to rear sun gear（13）With rear gear ring （23）Between it is multiple after planetary gears（12）And it is arranged on multiple rear planetary gears（12）On rear planet carrier（14）, in rear gear ring （23）On be coaxially fixed with second gear（15）, in rear planet carrier（14）Going up on coaxial has one end to be located in housing（7）It is outside Output shaft（17）, in output shaft（17）It is upper to be located at housing（7）Interior part is fixed with the 3rd gear（16）.
- A kind of 2. multi-mode hydraulic machinery stepless speed change device according to claim 1, it is characterised in that：The hydraulic pressure becomes Fast device includes the volume adjustable hydraulic pump being connected by hydraulic circuit（4）And variable hydraulic motor（18）, in volume adjustable hydraulic pump（4） Input shaft on be fixed with the 4th gear（5）, and the 4th gear（5）With first gear（8）Engagement connection, in variable delivery hydraulic horse Reach（18）Output shaft（17）On can clutch be provided with and second gear（15）Engage the 5th gear of connection（19）And with the 3rd Gear（16）Engage the 6th gear of connection（21）.
- A kind of 3. multi-mode hydraulic machinery stepless speed change device according to claim 2, it is characterised in that：The pattern gear Position switching execution system includes being arranged on housing（7）On inwall and for controlling front ring gear（2）The first brake rotated（1）、 It is arranged on housing（7）On inwall and for gear ring after controlling（23）The second brake of rotation（11）, be arranged on the 5th gear （19）And variable hydraulic motor（18）Output shaft（17）Between first clutch（22）And it is arranged on the 6th gear（21）With Variable hydraulic motor（18）Output shaft（17）Between second clutch（20）.
- A kind of 4. multi-mode hydraulic machinery stepless speed change device according to claim 3, it is characterised in that：The multi-mode Hydraulic machinery stepless speed change device also includes one and is used for control model gear switching execution system, volume adjustable hydraulic pump（4）And Variable hydraulic motor（18）Hydraulic control system, hydraulic control system includes hydraulic oil container（24）, slippage pump（25）, perform liquid Press pump（26）, brake magnetic valve（27）, clutch solenoid valve（28）, for adjusting volume adjustable hydraulic pump（4）The of output flow One servo variable displacement device（29）And for adjusting variable hydraulic motor（18）Second servo variable displacement device of input flow rate（30）； Slippage pump（25）With execution hydraulic pump（26）Arrival end respectively with hydraulic oil container（24）Connection, slippage pump（25）The port of export lead to Cross repairing check valve（31）And high-pressure safety valve（32）With volume adjustable hydraulic pump（4）And variable hydraulic motor（18）Between hydraulic pressure Circulation line is connected；The clutch solenoid valve（28）, brake magnetic valve（27）, the first servo variable displacement device（29）And the Two servo variable displacement devices（30）Respectively with performing hydraulic pump（26）The port of export connection, brake magnetic valve（27）For 3-position 4-way Reversal valve, brake magnetic valve（27）Two of which interface in four-way interface is respectively with performing hydraulic pump（26）The port of export and Hydraulic oil container（24）Connection, two other interface pass through one-way throttle valve respectively（33）With for controlling the first brake（1）'s First brake executing agency（34）And for controlling second brake（11）Second brake executing agency（35）Connection； Clutch solenoid valve（28）For the three position four-way directional control valve with H type Median Functions, clutch solenoid valve（28）In four-way interface Two of which interface respectively with perform hydraulic pump（26）The port of export and hydraulic oil container（24）Connection, two other interface with For controlling first clutch（22）And second clutch（20）A double oil pocket clutch actuating mechanism（36）Connection.
- A kind of 5. multi-mode hydraulic machinery stepless speed change device according to claim 4, it is characterised in that：In the braking Magnetic valve and execution hydraulic pump（26）The port of export between connecting line be provided with and hydraulic oil container（24）The main overflow of connection Valve（37）.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201711163954.4A CN107859723B (en) | 2017-11-21 | 2017-11-21 | A kind of multi-mode hydraulic machinery stepless speed change device |
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| CN201711163954.4A CN107859723B (en) | 2017-11-21 | 2017-11-21 | A kind of multi-mode hydraulic machinery stepless speed change device |
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| CN107859723A true CN107859723A (en) | 2018-03-30 |
| CN107859723B CN107859723B (en) | 2019-05-21 |
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| CN201711163954.4A Expired - Fee Related CN107859723B (en) | 2017-11-21 | 2017-11-21 | A kind of multi-mode hydraulic machinery stepless speed change device |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN113099835A (en) * | 2021-05-19 | 2021-07-13 | 山东巨明机械有限公司 | Non-row self-propelled corn harvester |
| CN115013525A (en) * | 2022-05-31 | 2022-09-06 | 合肥工业大学 | Control method for transmission mode switching of double-flow transmission speed change system |
| US20220373072A1 (en) * | 2020-07-20 | 2022-11-24 | Jiangsu University | Power split and power convergence combined hydro-mechanical hybrid transmission device |
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| DE102012218974A1 (en) * | 2011-12-09 | 2013-06-13 | Robert Bosch Gmbh | Method of switching between transmission ranges of power distribution transmission, involves closing and opening clutch arrangements and vice versa in different speed ranges, where operating time period of arrangements is predefined |
| CN105090427A (en) * | 2015-09-09 | 2015-11-25 | 长安大学 | Mechanical-hydraulic hybrid stepless speed change device with secondary elements |
| CN205350221U (en) * | 2016-01-19 | 2016-06-29 | 曹金强 | Stepless speed changer |
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| CN2221124Y (en) * | 1995-03-10 | 1996-02-28 | 王宪平 | Tandem planetary gear differential sped reducer |
| RU2307758C1 (en) * | 2006-07-24 | 2007-10-10 | Государственное образовательное учреждение высшего профессионального образования "Южно-Уральский государственный университет" | Transmission of high-speed crawler vehicle |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| US20220373072A1 (en) * | 2020-07-20 | 2022-11-24 | Jiangsu University | Power split and power convergence combined hydro-mechanical hybrid transmission device |
| US11614151B2 (en) * | 2020-07-20 | 2023-03-28 | Jiangsu University | Power split and power convergence combined hydro-mechanical hybrid transmission device |
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| CN115013525A (en) * | 2022-05-31 | 2022-09-06 | 合肥工业大学 | Control method for transmission mode switching of double-flow transmission speed change system |
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| CN107859723B (en) | 2019-05-21 |
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