CN109488740A - A kind of single bipolar system hydraulic mechanical stepless gearbox - Google Patents
A kind of single bipolar system hydraulic mechanical stepless gearbox Download PDFInfo
- Publication number
- CN109488740A CN109488740A CN201910001465.1A CN201910001465A CN109488740A CN 109488740 A CN109488740 A CN 109488740A CN 201910001465 A CN201910001465 A CN 201910001465A CN 109488740 A CN109488740 A CN 109488740A
- Authority
- CN
- China
- Prior art keywords
- gear
- power
- shaft
- hydraulic
- planetary gear
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
Classifications
-
- 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
Landscapes
- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Structure Of Transmissions (AREA)
Abstract
The invention discloses a kind of single bipolar system hydraulic mechanical stepless gearboxes.It is characterised in that it includes power feed system, hydraulic pump-controlled speed adjustment system, conflux planetary gear set mechanism, clutch switching mechanism, hydraulic machinery back-off region section mechanism, rear axle output mechanism.Power input shaft (23) synchronize it is coaxial be equipped with single planetary gear set gear ring (6), planet carrier (9) and sun gear (20), single planetary gear set carrier (9) synchronize it is coaxial be equipped with double-planetary gear (7), power confluence and back kick graduating power.Planetary gear (10) are retreated to engage with hollow intermediate gear shaft (17) gear；Hollow intermediate gear shaft (17) is nested on jackshaft (19).The speed changer uses single bipolar system planet row, and lateral dimension is small.It combines mechanically operated high efficiency and hydraulicdriven successional advantage, exports after being converged by four section hydraulic machineries, improves operation convenience.
Description
Technical field
The invention belongs to hydraulic mechanical composite transmission fields, relate to a kind of single bipolar system hydraulic machinery variable speed
Device.
Background technique
As off roader is towards large-scale multipurpose, the development of multi-functional multiple working.When vehicle faces complex working condition
When, speed and engine load variation frequently, lead to the reduction of conventional mechanical transmission system effectiveness.To adapt to different operating conditions, pass
System speed changer transmits power by the mechanical structure with fixed drive ratio, can not achieve variable speed, if it is desired to multiple speed
Variation, need to increase gear change, increase the complex degree of structure of speed changer, cumbersome, not be able to satisfy vehicle in complex working condition
Under best power performance and fuel economy.
Compared with conventional transmissions, hydraulic mechanical stepless gearbox combine mechanically operated high efficiency with it is hydraulicdriven
Successional advantage has taken into account the matching relationship of transmission ratio, transmission efficiency and complex job operating condition.Vehicle is made under complex working condition
When industry, stepless transmission can continuously change transmission ratio according to the variation of handling situations, improve the fuel economy of vehicle.Together
When conventional transmissions shift when will appear power interruption and shift shock, stepless transmission, which can be realized, continuously changes section,
The shift shock for reducing vehicle improves the comfort of vehicle.Therefore, hydraulic mechanical stepless gearbox becomes both at home and abroad big
The research hotspot of power power car drive technology.
Major part hydraulic mechanical stepless gearbox all use more planet rows confluence machine power and hydraulic power is defeated at present
Enter, more planet row lateral dimensions are big, and structure is complicated, and processing difficulties influence power transmission efficiency.Therefore, a kind of single bipolar
The hydraulic mechanical stepless gearbox of formula reduces lateral dimension, is realized and is converged by compound planet gear, structure is simple, is adapted to
The application of modern high power off roader.
Summary of the invention
To solve the problems of the prior art, the present invention is directed to design one kind to can adapt to high-power non-road
Utilization of the road vehicles under complex working condition, the single bipolar system hydraulic mechanical stepless gearbox for range of infinitely variable speeds that there are two tools,
Have the characteristics that structure is simple, transmission efficiency is high simultaneously, speed changer is realized by the switching of 3 clutches and 2 brakes
Advance section retreats section and braking.
Single bipolar system hydraulic mechanical stepless gearbox provided by the invention: mainly including power feed system, hydraulic pump
It controls motor governing system, conflux planetary gear set mechanism, clutch switching mechanism, hydraulic machinery back-off region section mechanism, rear axle and exports machine
Structure；
The power feed system includes 1 power of engine through power input shaft 23, and hydraulic pressure road passes through the dynamic of power input shaft 23
Power shunts gear 4 and engages with variable pump shaft gear 24 is fixed on, while variable pump 25 imparts power to quantitatively through hydraulic circuit
Motor 2, fixed displacement motor 2 are engaged by fixed displacement motor output gear 5 with the connected gear 22 of the gear ring of gear ring 6, and mechanical road passes through dynamic
Empty set input sun gear 21 is engaged with double-planetary gear 7 on power input shaft 23.
The hydraulic Hydraulic Pump-Motor System includes variable pump 25 and fixed displacement motor 2, and variable pump 25 and fixed displacement motor 2 constitute pump
Horse-controlling motor closed circuit.
The conflux planetary gear set mechanism includes the tooth on external toothing planet row fixed axis gear pair and internal messing double-planetary gear
Wheel；External toothing planet row fixed axis gear pair includes fixed displacement motor output shaft gear pairi 2, planet carrier 9 and gear ring 6；Internal messing duplex
Gear on planetary gear includes double-planetary gear 7 and intermediate sun gear 20；Double-planetary gear 7 is housed, gear ring 6 is solid on planet carrier 9
The even connected gear 22 of gear ring, the intermediate sun gear 20 are coaxial connected with hollow intermediate gear shaft 17.
The clutch switching mechanism includes clutch KC8, clutch KL11, clutch KH13；Clutch KC8 drive end
It is connected with power input shaft 23, Partner and input sun gear 21 are connected；Clutch KL11 drive end and planet carrier 9 are connected, quilt
Moved end is connected with nested with hollow intermediate gear shaft 17, and when clutch KL11 is combined, power can be transferred to sky by planet carrier 9
Heart intermediate gear shaft 17；Clutch KH13 drive end and hollow intermediate gear shaft 17 are connected, and Partner and power output shaft 14 are solid
Even, when clutch KH13 is combined, power is transferred to power output shaft 14 by hollow intermediate gear shaft 17.
Hydraulic machinery back-off region section mechanism includes retreating planetary gear 10, hollow intermediate gear shaft 17, brake KR18；
Planetary gear 10 is retreated to engage with hollow 17 gear of intermediate gear shaft；Hollow intermediate gear shaft 17 is nested on jackshaft 19.
The rear axle output mechanism includes output front gear 12, output gear 15, power output shaft 14 and brake KP16；
Output front gear 12 is connect with hollow 17 empty set of intermediate gear shaft, and transmitting power is engaged with output gear 15；Power output shaft 14
Be connected output gear 15；Brake KP16 drive end and power output shaft 14 are connected, and Partner and cabinet 3 are connected.
Detailed description of the invention
Fig. 1 is single bipolar system hydraulic mechanical stepless gearbox structural schematic diagram.
In attached drawing: 1- engine；2- fixed displacement motor；3- cabinet；4- dynamic branch gear；5- fixed displacement motor output gear；
6- gear ring；7- double-planetary gear；8- clutch KC；9- planet carrier；10- retreats planetary gear；11- clutch KL；12- output
Front gear；13- clutch KH；14- power output shaft；15- output gear；16- brake KP；The hollow intermediate gear shaft of 17-；
18- brake KR；19- jackshaft；Sun gear among 20-；21- inputs sun gear；22- gear ring is connected gear；The input of 23- power
Axis；24- variable pump shaft gear；25- variable pump.
Specific embodiment
A kind of single bipolar system hydraulic mechanical stepless gearbox of the invention, 1 power of engine is defeated by power when work
Enter axis 23 and mechanical driving part and hydraulic drive portion are diverted to by input sun gear 21 and hydraulic power shunting gear 4 respectively
Point.Power confluence is carried out by double-planetary gear 7.Clutch KC8 separate when, clutch KL11, brake KR18 respectively in connection with
The pure hydraulic low-speed section and pure hydraulic High-speed section of gearbox thus；When clutch KC8 is combined, clutch KL11, brake
The hydraulic machinery low speed section and high-velocity section of gearbox are realized in the combination of KR18 with separating；Brake KR18 braking, power warp
Confluence realizes the work backwards of vehicle.Variable pump 25 is connect by high-pressure oil pipe with fixed displacement motor 2, this 25 discharge capacity ratio of variable pump by
Hydraulic Pump-Motor System electric control module controls realize discharge capacity ratio from -1~0~+1 variation, 2 output shaft revolving speed of fixed displacement motor from rotate forward~
Stopping~reversion variation, realizes the positive and negative rotation of gear ring 6.
When low speed section clutch KL11, high-velocity section clutch KH13 are in discrete state, each section gear pair
In idling conditions.At this time when pure hydraulic machinery gear clutch KC8 is combined, variator is in pure hydraulic section, when low
Fast section clutch is also in relation with speed changer is in the pure hydraulic low-speed stage at this time；When high segment clutch combines, speed changer at this time
In the pure hydraulic low-speed stage.
When tractor is in low speed section working condition, and 25 discharge capacity ratio of variable pump reaches -1, fixed displacement motor 2 is exported at this time
Axis revolving speed reaches reversion maximum value, after variable pump electronic control module receives tractor speedup signal, at this time clutch KC8 with
Low speed section clutch KL11 starts to work, and confluence situation is as follows: the state is acted on by planetary gear set, and confluence mode is planet
Gear set gear ring 6 and input sun gear 21 input, and planet carrier 9 exports, before power is by the output on hollow intermediate gear shaft 17
Gear 12 is engaged with output gear 15 passes to the outside output power of power output shaft 14.When in low speed section, due to variable
It pumps 25 constantly variation, the revolving speeds of motor output shaft of discharge capacity from -1 to+1 also to change from reversed maximum value to positive maximum value, planet
Gear set realizes the stepless speedup in the segment limit of low regime under the collective effect of machine power stream and hydraulic power stream.
When tractor is in high-velocity section working condition, and 25 discharge capacity ratio of variable pump reaches+1, fixed displacement motor 2 is exported at this time
Axis revolving speed reaches rotating forward maximum value, after variable pump electronic control module, which receives tractor, increases shelves signal, low speed section clutch
KL11 separation, high-velocity section clutch KH13 are combined.Situation of converging is as follows: the state is acted on by planetary gear set, mode of converging
It is inputted for planetary gear set ring gear and sun gear, intermediate sun gear 20 exports, and power passes through on hollow intermediate gear shaft 17
Gear pair and the outside output power of power output shaft 14.When in high-velocity section, not due to 25 discharge capacity ratio from+1 to -1 of variable pump
Disconnected variation, the revolving speed of motor output shaft also change from positive maximum value to reversed maximum value, and planetary gear set is in machine power stream
Under the collective effect of hydraulic power stream, the stepless speedup within the scope of high-velocity section is realized.
Section working condition is retreated when tractor is in, when 25 discharge capacity ratio of variable pump reaches -1, fixed displacement motor 2 is exported at this time
Axis revolving speed reaches reversion maximum value, after variable pump electronic control module receives tractor backing signal, at this time high-velocity section from
Clutch KH13 separation, brake KR18 work, confluence situation are as follows: the state is acted on by planetary gear set, and confluence mode is row
Star gear-wheel gear-ring 6 and input sun gear 21 input, and planet carrier 9 exports, power by retreat section gear pair and jackshaft with it is defeated
Shaft gear pair is through the outside output power of power output shaft 14.In retreat section when, due to 25 discharge capacity ratio of variable pump from -1 to+
1 constantly variation, the revolving speed of motor output shaft also changes from reversed maximum value to positive maximum value, moves in machine power stream with hydraulic
Under the collective effect of force flow, the stepless speedup within the scope of four sections is realized.
Above-described embodiment and figure only illustrate technical solution of the present invention with this rather than limit, although referring to better embodiment
Present invention innovation is described in detail, those skilled in the art should understand that, it can be to the skill of the invention
Art scheme is modified or equivalent replacement, without departing from the objective and range of the present invention program, because covering of the invention
In scope of the claims.
Claims (4)
1. a kind of single bipolar system hydraulic mechanical stepless gearbox, it is characterised in that: including power feed system, hydraulic pump horse-controlling
Up to speed-regulating system, conflux planetary gear set mechanism, clutch switching mechanism, hydraulic machinery back-off region section mechanism, rear axle output mechanism；Institute
Stating power feed system includes engine (1) power through power input shaft (23), and hydraulic pressure road passes through the dynamic of power input shaft (23)
Power shunts gear (4) and engages with variable pump shaft gear (24) is fixed on, while variable pump (25) transmits power through hydraulic circuit
Specified rate motor (2), fixed displacement motor (2) are nibbled by the gear ring of fixed displacement motor output gear (5) and gear ring (6) connected gear (22)
It closes, mechanical road is engaged by empty set input sun gear (21) on power input shaft (23) with double-planetary gear (7).
2. single bipolar system hydraulic mechanical stepless gearbox according to claim 1, it is characterised in that: the confluence planet
Row mechanism includes the gear on external toothing planet row fixed axis gear pair and internal messing double-planetary gear；Equipped with double on planet carrier (9)
Join planetary gear (7), gear ring (6) is connected, and gear ring is connected gear (22), and intermediate sun gear (20) and hollow intermediate gear shaft (17) are same
Axis is connected.
3. single bipolar system hydraulic mechanical stepless gearbox according to claims 1 and 2, it is characterised in that: the clutch
Device KC(8) drive end and power input shaft (23) are connected, and Partner and input sun gear (21) are connected；Clutch KL(11) actively
End is connected with planet carrier (9), and Partner is connected with nested with hollow intermediate gear shaft (17)；Clutch KH(13) drive end and empty
Heart intermediate gear shaft (17) is connected, and Partner and power output shaft (14) are connected.
4. single bipolar system hydraulic mechanical stepless gearbox according to claims 1 and 2, it is characterised in that: the retrogressing
Planetary gear (10) is engaged with hollow intermediate gear shaft (17) gear；Hollow intermediate gear shaft (17) is nested in jackshaft (19)
On.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910001465.1A CN109488740A (en) | 2019-01-02 | 2019-01-02 | A kind of single bipolar system hydraulic mechanical stepless gearbox |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910001465.1A CN109488740A (en) | 2019-01-02 | 2019-01-02 | A kind of single bipolar system hydraulic mechanical stepless gearbox |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN109488740A true CN109488740A (en) | 2019-03-19 |
Family
ID=65712174
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201910001465.1A Pending CN109488740A (en) | 2019-01-02 | 2019-01-02 | A kind of single bipolar system hydraulic mechanical stepless gearbox |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN109488740A (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109882559A (en) * | 2019-03-27 | 2019-06-14 | 河北英虎农业机械制造有限公司 | A kind of moving gear box for harvest machinery |
| CN112377593A (en) * | 2020-11-16 | 2021-02-19 | 重庆大学 | Double-stage planetary gear return flow type hydraulic mechanical stepless transmission system |
| CN112377592A (en) * | 2020-11-16 | 2021-02-19 | 重庆大学 | Single-stage planetary gear return flow type hydraulic mechanical stepless transmission system |
| CN114087334A (en) * | 2021-11-17 | 2022-02-25 | 浙江盘毂动力科技有限公司 | Hydraulic and mechanical combined type comprehensive transmission device and vehicle |
-
2019
- 2019-01-02 CN CN201910001465.1A patent/CN109488740A/en active Pending
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109882559A (en) * | 2019-03-27 | 2019-06-14 | 河北英虎农业机械制造有限公司 | A kind of moving gear box for harvest machinery |
| CN112377593A (en) * | 2020-11-16 | 2021-02-19 | 重庆大学 | Double-stage planetary gear return flow type hydraulic mechanical stepless transmission system |
| CN112377592A (en) * | 2020-11-16 | 2021-02-19 | 重庆大学 | Single-stage planetary gear return flow type hydraulic mechanical stepless transmission system |
| CN114087334A (en) * | 2021-11-17 | 2022-02-25 | 浙江盘毂动力科技有限公司 | Hydraulic and mechanical combined type comprehensive transmission device and vehicle |
| CN114087334B (en) * | 2021-11-17 | 2023-11-03 | 浙江盘毂动力科技有限公司 | Hydraulic mechanical combined type comprehensive transmission device and vehicle |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN109488740A (en) | A kind of single bipolar system hydraulic mechanical stepless gearbox | |
| CN101809330B (en) | Power split transmission | |
| CN108591410B (en) | Four-section type hydraulic mechanical stepless transmission device for tracked vehicle | |
| CN102359567A (en) | Full-automatic continuously variable transmission of tractor | |
| CN110360293B (en) | Hydraulic mechanical stepless speed changer | |
| CN207333618U (en) | A kind of hydraulic mechanical stepless gearbox | |
| CN109058403A (en) | A kind of power-diversion stepiess variable drive system | |
| CN111114278B (en) | Hybrid power driving system and vehicle | |
| CN104088978A (en) | Single-planet-row convergence hydraulic mechanical continuously variable transmission | |
| CN104329433B (en) | Double-flow transmission gearbox for hydraulic machine of tractor | |
| CN104595431A (en) | High-power tractor hydraulic machinery stepless speed changer | |
| CN202510651U (en) | Full-automatic continuously variable transmission of tractor | |
| CN107246467B (en) | Stepless transmission device for hydraulic machinery of loader | |
| CN108397534B (en) | Three-section type hydraulic mechanical stepless transmission device of loader | |
| CN103453104A (en) | Four-segment hydraulic mechanical composite transmission device | |
| CN109458439B (en) | Single-planet-row converging tractor stepless speed changing box and use method | |
| CN209654555U (en) | A kind of single bipolar system hydraulic mechanical stepless gearbox | |
| CN111692300B (en) | Mechanical hydraulic composite transmission device suitable for heavy vehicle | |
| CN109751381B (en) | Multifunctional stepless speed change transmission device | |
| CN109578544B (en) | Single-planet-row multi-mode hydraulic mechanical stepless speed changer | |
| CN113090731A (en) | Multi-power flow composite stepless transmission device | |
| CN108825747B (en) | Continuous variable transmission device for forklift | |
| CN107166005B (en) | Mechanical-hydraulic mixes stepless transfer gear box | |
| CN109466294A (en) | Two gear coaxial power shift power drive systems and process for gear | |
| CN107191567B (en) | The mechanical compound continuously variable transmittion of loader hydraulic |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination |