CN107152510A - Loader hydraulic mechanical stepless transmission device - Google Patents
Loader hydraulic mechanical stepless transmission device Download PDFInfo
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- CN107152510A CN107152510A CN201710299574.7A CN201710299574A CN107152510A CN 107152510 A CN107152510 A CN 107152510A CN 201710299574 A CN201710299574 A CN 201710299574A CN 107152510 A CN107152510 A CN 107152510A
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- gear
- clutch
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- power
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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
- F16H37/00—Combinations of mechanical gearings, not provided for in groups F16H1/00 - F16H35/00
- F16H37/02—Combinations of mechanical gearings, not provided for in groups F16H1/00 - F16H35/00 comprising essentially only toothed or friction gearings
- F16H37/06—Combinations of mechanical gearings, not provided for in groups F16H1/00 - F16H35/00 comprising essentially only toothed or friction gearings with a plurality of driving or driven shafts; with arrangements for dividing torque between two or more intermediate shafts
- F16H37/08—Combinations of mechanical gearings, not provided for in groups F16H1/00 - F16H35/00 comprising essentially only toothed or friction gearings with a plurality of driving or driven shafts; with arrangements for dividing torque between two or more intermediate shafts with differential gearing
- F16H37/0833—Combinations of mechanical gearings, not provided for in groups F16H1/00 - F16H35/00 comprising essentially only toothed or friction gearings with a plurality of driving or driven shafts; with arrangements for dividing torque between two or more intermediate shafts with differential gearing with arrangements for dividing torque between two or more intermediate shafts, i.e. with two or more internal power paths
- F16H37/084—Combinations of mechanical gearings, not provided for in groups F16H1/00 - F16H35/00 comprising essentially only toothed or friction gearings with a plurality of driving or driven shafts; with arrangements for dividing torque between two or more intermediate shafts with differential gearing with arrangements for dividing torque between two or more intermediate shafts, i.e. with two or more internal power paths at least one power path being a continuously variable transmission, i.e. CVT
- F16H2037/088—Power split variators with summing differentials, with the input of the CVT connected or connectable to the input shaft
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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
- F16H37/00—Combinations of mechanical gearings, not provided for in groups F16H1/00 - F16H35/00
- F16H37/02—Combinations of mechanical gearings, not provided for in groups F16H1/00 - F16H35/00 comprising essentially only toothed or friction gearings
- F16H37/06—Combinations of mechanical gearings, not provided for in groups F16H1/00 - F16H35/00 comprising essentially only toothed or friction gearings with a plurality of driving or driven shafts; with arrangements for dividing torque between two or more intermediate shafts
- F16H37/08—Combinations of mechanical gearings, not provided for in groups F16H1/00 - F16H35/00 comprising essentially only toothed or friction gearings with a plurality of driving or driven shafts; with arrangements for dividing torque between two or more intermediate shafts with differential gearing
- F16H37/0833—Combinations of mechanical gearings, not provided for in groups F16H1/00 - F16H35/00 comprising essentially only toothed or friction gearings with a plurality of driving or driven shafts; with arrangements for dividing torque between two or more intermediate shafts with differential gearing with arrangements for dividing torque between two or more intermediate shafts, i.e. with two or more internal power paths
- F16H37/084—Combinations of mechanical gearings, not provided for in groups F16H1/00 - F16H35/00 comprising essentially only toothed or friction gearings with a plurality of driving or driven shafts; with arrangements for dividing torque between two or more intermediate shafts with differential gearing with arrangements for dividing torque between two or more intermediate shafts, i.e. with two or more internal power paths at least one power path being a continuously variable transmission, i.e. CVT
- F16H2037/088—Power split variators with summing differentials, with the input of the CVT connected or connectable to the input shaft
- F16H2037/0886—Power split variators with summing differentials, with the input of the CVT connected or connectable to the input shaft with switching means, e.g. to change ranges
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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
- F16H2200/00—Transmissions for multiple ratios
- F16H2200/20—Transmissions using gears with orbital motion
- F16H2200/2002—Transmissions using gears with orbital motion characterised by the number of sets of orbital gears
- F16H2200/2005—Transmissions using gears with orbital motion characterised by the number of sets of orbital gears with one sets of orbital gears
Abstract
The present invention discloses a kind of loader hydraulic mechanical stepless transmission device, including：Hydraulic speed regulation loop, planet point confluence mechanism, hydraulic machinery fixed axis gear transmission mechanism and Zheng Dao mechanisms.The transmission device realizes two or three hydro-mechanical segments using planet point confluence mechanism, is respectively used to starting, low speed operation (and walking at a high speed)；Reverse gear shift includes two hydro-mechanical segments.Circulating power is all not present in each hydro-mechanical segment, and compared to hydraulic machine dynamic power shift gear box, the transmission device can obtain higher transmission efficiency.And intersegmental switching only need to manipulate 1 clutch, can be achieved to take over seamlessly.
Description
Technical field
Invention is related to a kind of continuously variable transmittion, and in particular to one kind is suitable for loader hydraulic mechanical stepless transmission dress
Put.
Background technology
At present, engineering machinery loading machine generally use hydraulic machine dynamic power shift gear box, due to loading operation the need for,
Speed and engine load change are violent, and hydraulic moment variator is less efficient, and it is about 75% to cause transmission system highest transmission efficiency.
Hydrostatic drive can conveniently realize stepless speed regulation, loading machine engine is often worked in economic speed interval, can improve
The efficiency of energy utilization of vehicle；But because the efficiency of the hydraulic pump motor enclosed speed control loop used in Hydrostatic drive is relatively low, therefore
Compared with power shifting hydraulic mechanical transmission box, the Improvement of Hydrostatic drive is limited.
Hydrostatic-mechanical Transmission makes to start by compound, the achievable efficient stepless transmission of mechanical output and hydraulic power
Machine maintains stable load, is conducive to improving one of fuel economy, the developing direction as transmission system of wheel loader, both at home and abroad
Engineering machinery producer actively develops the research of the drive technology.
CN104136812 A, CN104136813 A, the US2006/0276291 A1 of Caterpillar Tractor disclose one
Kind of loading machine is with many gear hydromechanical transmissions, hydro-mechanical segment and a high-speed hydraulic machinery comprising two continuous change
Section, two continuous hydro-mechanical segments are respectively used to starting and low speed operation, and high-speed hydraulic machinery section is used for transition of walking.Due to
It is combined using the two-way of hydraulic machinery power, hydraulic pressure road transmitting portions power, therefore transmission efficiency is compared with hydraulic machine power shifting
Gearbox is greatly improved.
ZF companies US8328676 B2 disclose a kind of loader hydraulic mechanical driving device, using two or three liquid
Press mechanical pressing section, using point speed remittance square (Output split) and the power dividing form for dividing speed to converge fast (Compound split),
Transmission efficiency is higher.But the Hydraulic Elements power needed for two hydro-mechanical segment transmission schemes is larger；Three hydro-mechanical segments are passed
Dynamic scheme, switch between the IIth and the IIIth section still exist Hydraulic Elements speed it is discontinuous.
The A1 of Dana Rexroth company US 2014/0305113 disclose a kind of two-part hydromechanical transmission, pure
The starting of hydraulic pressure section and hydro-mechanical segment operation and walking.Dana Rexroth companies EP 2280192B1 disclose a kind of three sections
Formula hydromechanical transmission, pure hydraulic pressure section starting, two hydro-mechanical segments are respectively used to operation and walking, can obtained higher
Transmission efficiency.But two schemes are using hydraulic pressure section starting, and efficiency starts to walk low compared with hydro-mechanical segment.
The content of the invention
In view of this, the present invention provides a kind of loader hydraulic mechanical stepless transmission device, is started to walk using hydro-mechanical segment,
Improve the transmission efficiency of transmission system of wheel loader；And intersegmental switching only need to manipulate 1 clutch, can be achieved to take over seamlessly.
Described loader hydraulic mechanical stepless transmission device includes：Hydraulic speed regulation loop, planet point confluence mechanism, hydraulic pressure
I section of fixed axis gear transmission mechanism of machinery, II section of fixed axis gear transmission mechanism of hydraulic machinery, III section of fixed axis gear transmission of hydraulic machinery
Mechanism and Zheng Dao mechanisms；
The hydraulic speed regulation loop includes：The closed hydraulic loop being made up of hydraulic pump and hydraulic motor；The hydraulic pump
For two-way variable displacement pump, the hydraulic motor is double-action variable displacement motor；
The Zheng Dao mechanisms include：Axle B, input shaft, gear A, gear B, gear P, gear Q, clutch KV and clutch
KR；The gear P being fixed on the input shaft is connected by gear Bs of the clutch KV with empty set on input shaft；It is fixed in institute
The gear Q stated on axle B is connected by gear As of the clutch KR with empty set on axle B；The gear Q is engaged with gear P；
The planet point confluence mechanism includes：Two planet rows, gear C, gear D, gear M and gear N；Wherein the first row
Star row sun gear, the second planet row sun gear and the gear C are coaxially connected, and the hydraulic motor and the first planet row are too
Sun wheel is connected；Second planet row planet carrier is connected with the first planet toothrow circle and gear M, the first planet rows of planetary frame with it is described
Gear D is connected, and the gear D is engaged with gear A and gear B respectively；Second planet row gear ring is connected with the gear N；It is described
Gear N and engaged with the coaxial affixed gear K of hydraulic pump；
Described I section of fixed axis gear transmission mechanism of hydraulic machinery includes：Gear F, clutch K1, gear S, gear I and clutch
Device KL；The gear F is engaged with the gear C in the planet point confluence mechanism；The gear F passes through clutch K1With gear S
It is connected, the gear S is engaged with gear I；The gear I is connected by clutch KL with output shaft；
Described II section of fixed axis gear transmission mechanism of hydraulic machinery includes：Gear J, clutch K2, gear G, gear L, gear
S, gear I and clutch KL；Its middle gear J is engaged with the gear M in the planet point confluence mechanism, while the gear J is logical
Cross clutch K2It is connected with gear G, the gear G and is engaged with the coaxial affixed gears of the gear S；
Described III section of fixed axis gear transmission mechanism of hydraulic machinery includes：Gear J, clutch K2, gear G, gear L, gear
E, gear H and clutch KH；Engaged with the coaxial affixed gear E and gear H of the gear L, the gear H passes through clutch KH
It is connected with output shaft.
The forward gear of the continuously variable transmittion includes three hydro-mechanical segments, is respectively used to starting, low speed operation and high speed
Walking；
During for starting to walk, the clutch KV, clutch K1, clutch KL engagement；Power from the input shaft input after,
Gear P, clutch KV, gear B, gear D are sequentially passed through into planet point confluence mechanism；Hereafter power is divided into two-way：It is straight all the way
Connect and be output to gear C by the first planet row sun gear；Another road sequentially pass through be connected with the second planet row gear ring gear N,
Gear K is delivered to hydraulic pump, is then output to gear C by hydraulic motor；Two-way power is passed sequentially through after gear C confluxes
Gear F, clutch K1, gear S, gear I, clutch KL be transferred to output shaft；
During for low speed operation, clutch KV, clutch K2, clutch KL engagement；Power is after input shaft input, successively
Enter planet point confluence mechanism by gear P, clutch KV, gear B, gear D；This rear portion power passes through and the second planet
The connected gear N of toothrow circle is delivered to gear K, then is delivered to hydraulic pump by gear K, then transmits reversion by hydraulic motor
Star point confluence mechanism, power is completed in planet point confluence mechanism after confluxing, and is exported by gear M；Then in turn through gear
J, clutch K2, gear G, gear L, gear S, gear I, clutch KL be transferred to output shaft；
During for walking at a high speed, clutch KV, clutch K2, clutch KH engagement, power from input shaft input after, successively
Enter planet point confluence mechanism by gear P, clutch KV, gear B, gear D；This rear portion power passes through and the second planet
The connected gear N of toothrow circle is delivered to gear K, then is delivered to hydraulic pump by gear K, then transmits reversion by hydraulic motor
Star point confluence mechanism, power is completed in planet point confluence mechanism after confluxing, and is exported by gear M；Then in turn through gear
J, clutch K2, gear G, gear L, gear E, gear H, clutch KH be transferred to output shaft.
The continuously variable transmittion has two hydro-mechanical segments of reversing gear：
As the clutch KR, clutch K1, clutch KL engagements when, the continuously variable transmittion is in and reversed gear hydraulic machinery
I section；Power sequentially passes through gear P, gear Q, clutch KR, gear A, gear D and confluxed into planet point after input shaft input
Mechanism；Hereafter power is divided into two-way：Planet point confluence mechanism is directly entered all the way, and the first planet row sun gear is directly over all the way
It is output to gear C；Another road sequentially passes through the gear N being connected with the second planet row gear ring, gear K and is delivered to hydraulic pump, then
Gear C is output to by hydraulic motor；Two-way power passes sequentially through gear F, clutch K after gear C confluxes1, gear S, tooth
Wheel I, clutch KL are transferred to output shaft；
As the clutch KR, clutch K2, clutch KL engagements when, the continuously variable transmittion is in and reversed gear hydraulic machinery
II section；Motive sequentially passes through gear P, gear Q, clutch KR, gear A, gear D into planet point after input shaft input
Confluence mechanism；This rear portion power passes through the gear N being connected with the second planet row gear ring and is delivered to gear K, hydraulic pump, then
Planet point confluence mechanism is passed back to by hydraulic motor, power is completed in planet point confluence mechanism after confluxing, defeated by gear M
Go out, then in turn through gear J, clutch K2, gear G, gear L, gear S, gear I, clutch KL be transferred to output shaft.
Another loader hydraulic mechanical stepless transmission device that the present invention is provided includes：Hydraulic Adjustable Speed as described above is returned
Road, planet as described above point confluence mechanism, I section of fixed axis gear transmission mechanism of hydraulic machinery, II section of fixed axis gear of hydraulic machinery
Transmission mechanism and Zheng Dao mechanisms as described above；
Wherein described I section of fixed axis gear transmission mechanism of hydraulic machinery includes：Gear F, clutch K1, gear S and gear I；
The gear F is engaged with the gear C in the planet point confluence mechanism；The gear F passes through clutch K1Connect with gear S-phase,
The gear S is engaged with gear I；The gear I is fixed on output shaft；
Described II section of fixed axis gear transmission mechanism of hydraulic machinery includes：Gear J, clutch K2, gear G, gear S and gear
I；Its middle gear J is engaged with the gear M in the planet point confluence mechanism, while the gear J passes through clutch K2With gear G
It is connected, the gear G is engaged with gear I.
Beneficial effect：
(1) continuously variable transmittion is combined using the power of hydraulic pressure and machinery, and hydraulic pressure road transmitting portions power is most of
Power is transmitted by mechanical road, realizes high transmission efficiency and variable speed, can improve the oil consumption of operating efficiency and reduction engine.
(2) using planet point confluence mechanism, two or three hydro-mechanical segments can be achieved, wherein I section of hydraulic machinery is used for
Starting, II section of hydraulic machinery is used for low speed operation, and III section of hydraulic machinery is used to walk at a high speed；Hydro-mechanical segment starts to walk, and can improve
The transmission efficiency of low speed；Intersegmental switching only need to manipulate 1 clutch, can be achieved to take over seamlessly.
(3) whole stepless speed regulation, can make engine often work in economic speed, improve fuel economy, reduce hair
The noise of motivation.
(4) the zero-speed difference switching of intersegmental clutch can be achieved between II section of I section of hydraulic machinery and hydraulic machinery, be suitable for making
Industry operating mode, improves the life-span of clutch friction plate, simplifies the design of shift logic and steerable system.II section of hydraulic machinery and
Switch between III section of hydraulic machinery for speed difference, but be mainly used in walking transition operating mode at a high speed, do not influence operating efficiency.
(5) between II section of I section of hydraulic machinery and hydraulic machinery, due to the presence of hydraulic speed regulation system, achievable power is changed
Gear, first engages next section of clutch, then unclamp the clutch of the preceding paragraph, it is ensured that the not interrupt output of power, it is ensured that operation
Efficiency.
(6) except a point confluence mechanism, other parts are driven using fixed axis gear, loader drive mechanism on the one hand can be achieved defeated
Enter and on the other hand the center drop that exports away from can reduce technique and processing cost.
Brief description of the drawings
Fig. 1 is the transmission sketch of the compound continuously variable transmittion of hydraulic machinery in embodiment 1；
Fig. 2 is the transmission sketch of the compound continuously variable transmittion of hydraulic machinery in embodiment 2；
Wherein：1- housings, 2- axles A, 3- gear A, 4- axles B, 5- gear B, 6- input shafts, 7- gear Cs, 8- hydraulic motors,
9- the first planet row sun gears, 10- hydraulic pumps, 11- the first planet rows of planetary frame, 12- gear Ds, 13- the first planet toothrow circles,
14- clutches K1, 15- gears E, 16- gear F, 17- output shaft, 18- clutch KH, 19- gear H, 20- gear I, 21- clutches
Device KL, 22- gear G, 23- gear J, 24- clutch K2, 25- gear L, 26- gear S, 27- gear K, 28- gear M, 29- teeth
Take turns N, 30- second planet row sun gear, the second planet rows of 31- planet carrier, the second planet rows of 32- gear ring, 33- slippage pumps, 34- from
Clutch KV, 35- gear P, 36- clutch KR, 37- gear Q, 38- gear R
Embodiment
The present invention will now be described in detail with reference to the accompanying drawings and examples.
Embodiment 1：
The present embodiment provides a kind of loading machine and is combined continuously variable transmittion with three-stage hydraulic machinery, and the transmission device is used
Planet arrangement mechanism realizes three hydro-mechanical segments, is respectively used to starting, low speed operation and walks at a high speed；Reverse gear shift includes two liquid
Press mechanical pressing section.Circulating power is all not present in each hydro-mechanical segment, compared to hydraulic machine dynamic power shift gear box, the transmission device
Higher transmission efficiency can be obtained.
The continuously variable transmittion includes：Hydraulic speed regulation loop, planet point confluence mechanism, I section of fixed axis gear of hydraulic machinery are passed
Motivation structure, II section of fixed axis gear transmission mechanism of hydraulic machinery, III section of fixed axis gear transmission mechanism of hydraulic machinery and Zheng Dao mechanisms.
Wherein hydraulic speed regulation loop includes：Hydraulic motor 8, hydraulic pump 10 and slippage pump 33；Wherein hydraulic motor 8 is two-way
Variable displacement motor, hydraulic pump 10 is two-way variable displacement pump, hydraulic motor 8 and the composition closed hydraulic loop of hydraulic pump 10, with the phase of input shaft 6
Slippage pump 33 even maintains the low pressure of closed circuit, and provides control oil pressure for hydraulic motor 8 and hydraulic pump 10.Hydraulic pressure horse
It is connected up to 8 with the first planet row sun gear 9 in planet point confluence mechanism, hydraulic pump 10 is coaxial by connecting shaft and gear K27
It is connected.Mechanical energy is converted into after hydraulic energy by the power part for coming from engine by hydraulic pump 10 into hydraulic circuit,
This section hydraulic can be re-converted into mechanical energy by hydraulic motor 8 to return among point confluence mechanism.
Zheng Dao mechanisms include：Axle B4, input shaft 6, gear A 3, gear B 5, gear P35, gear Q37, clutch KV34 and
Clutch KR36.Wherein, gear B 5 of the clutch KV34 drive end and empty set on input shaft 6 be connected, Partner with it is coaxial
The gear P35 being fixed on input shaft 6 is connected.Gear D 12 in gear B 5 and planet point confluence mechanism is engaged.Clutch KR36
Gear A 3 on axle B4 of drive end and empty set be connected, Partner and the gear Q37 being coaxially fixed on axle B4 are connected, gear
Q37 is engaged with gear P35.Gear D 12 in gear A 3 and planet point confluence mechanism is engaged, while on gear Q37 and axle A2
Gear R38 is engaged.When clutch KV34 is engaged, the power of engine after the input of input shaft 6, pass sequentially through gear P35,
Clutch KV34, gear B 5, gear D 12 enter planet point confluence mechanism, and now gearbox is in forward gear.As clutch KR36
During engagement, the power of engine passes sequentially through gear P35, gear Q37, clutch KR36, gear after the input of input shaft 6
A3, gear D 12 enter a point confluence mechanism, and now gearbox is in reverse gear.
Planet is divided to confluence mechanism to be made up of two common planetary rows, wherein the first planet row sun gear 9, the second planet row are too
Sun wheel 30 and gear C 7 are coaxially connected by connecting shaft, and the hydraulic motor 8 is also connected with the connecting shaft.Second planet row
Gear M28 of the planet carrier 31 with the first planet toothrow circle 13 and empty set in the connecting shaft is connected, the first planet rows of planetary frame
11 and gear D 12 of the empty set in the connecting shaft be connected, the second planet row gear ring 32 and gear N29 of the empty set in the connecting shaft
It is connected, gear N29 and is engaged with the coaxial affixed gear K27 of hydraulic pump 10.Because hydraulic pump 10 passes through gear K27, gear N29
The second planet row gear ring 32 is connected, mechanical road power is after gear D 12 is from the input of the first planet rows of planetary frame 11, and a part is logical
Cross gear K27 and be delivered to hydraulic circuit.Gear C 7 is I section of output of hydraulic machinery, and gear M28 is hydraulic machinery II, III section of output.
I section of fixed axis gear transmission mechanism of hydraulic machinery includes：Gear F16, clutch K114th, gear S26, gear I20 and
Clutch KL21.Gear C 7 in its middle gear F16 and planet point confluence mechanism is engaged；Clutch K114 drive end passes through even
Spindle is connected with gear S26, and gear F16 of the Partner with empty set in the connecting shaft is connected；Gear S26 is with empty set in output shaft
Gear I20 engagements on 17；Gear I20 and clutch KL21 drive end connection, clutch KL21 Partner and output shaft
17 connections.As clutch K1When 14 and clutch KL21 is engaged, the power for coming from planet point confluence mechanism passes sequentially through gear
F16, clutch K114th, gear S26, gear I20, clutch KL21 are transferred to output shaft 17, are finally exported via output shaft 17.
II section of fixed axis gear transmission mechanism of hydraulic machinery includes：Gear J23, clutch K224th, gear G22, gear L25,
Gear S26, gear I20 and clutch KL21.Gear M28 engagements in its middle gear J23 and planet point confluence mechanism, while tooth
Take turns J23 and clutch K224 Partner is affixed, clutch K224 drive end and gear G22 are affixed, gear G22 and gear L25
Engagement, gear L25 and gear S26 are coaxially affixed, and gear I20s of the gear S26 with empty set on output shaft 17 is engaged；Gear I20
Connected with clutch KL21 drive end, clutch KL21 Partner and output shaft 17 are connected.When clutch K224 and clutch
When device KL21 is engaged, the power for coming from planet point confluence mechanism passes sequentially through gear J23, clutch K224th, gear G22, tooth
Wheel L25, gear S26, gear I20, clutch KL21 are transferred to output shaft 17, are finally exported via output shaft 17.
III section of fixed axis gear transmission mechanism of hydraulic machinery includes：Gear J23, clutch K224th, gear G22, gear L25,
Gear E15, gear H19 and clutch KH18.Gear M28 engagements in its middle gear J23 and planet point confluence mechanism, while tooth
Take turns J23 and clutch K224 Partner is affixed, clutch K224 drive end and gear G22 are affixed, gear G22 and gear L25
Engagement, gear L25 and gear E15 are coaxially affixed, and the gear H19 of gear E15 and empty set on output shaft 17 is meshed, gear
H19 is connected with clutch KH18 drive end, and clutch KH18 Partner is connected with output shaft 17.As clutch K224 and from
When clutch KH18 is engaged, the power for coming from planet point confluence mechanism passes sequentially through gear J23, clutch K224th, gear G22,
Gear L25, gear E15, gear H19, clutch KH18 are transferred to output shaft 17, are finally exported via output shaft 17.
Engine power is inputted from input shaft 6, and the front-rear axle of loading machine is output to after the continuously variable transmittion.The biography
Except planet point confluence mechanism, other parts are driven using fixed axis gear in dynamic device, the axle in transmission device is both supported upon housing 1
On.
The forward gear of the continuously variable transmittion includes three hydro-mechanical segments, is respectively used to starting, low speed operation and high speed
Walking, reverse gear shift includes two hydro-mechanical segments；Specific implementation is：
First paragraph is I section of hydraulic machinery：Under the operating mode, clutch KV34, clutch K114th, clutch KL21 is engaged；
Engine power sequentially passes through gear P35, clutch KV34, gear B 5, gear D 12 and enters planet point after the input of input shaft 6
Confluence mechanism, is delivered to the first planet rows of planetary frame 11 in point confluence mechanism.Hereafter power is divided into two-way：Power is direct all the way
Gear C 7 is output to by the first planet row sun gear 9；Another road power sequentially passes through what is be connected with the second planet row gear ring 32
Gear N29, gear K27 are delivered to hydraulic pump 10, into hydraulic circuit, are then output to gear C 7 by hydraulic motor 8；Two-way
Power is output to gear F16 after gear C 7 confluxes；Then clutch K is passed sequentially through114th, gear S26, gear I20, clutch
Device KL21 is transferred to output shaft 17, is finally exported via output shaft 17.
Second segment is II section of hydraulic machinery：Under the operating mode, clutch KV34, clutch K224th, clutch KL21 is engaged,
Engine power is after the input of input shaft 6, and gear P35, clutch KV34, gear B 5, gear D 12 enter planet and divide the machine that confluxes
Structure；This rear portion power passes through the gear N29 being connected with the second planet row gear ring 32 and is delivered to gear K27, then by gear
K27 is delivered to hydraulic pump 10, into hydraulic circuit, is then passed back to planet point confluence mechanism by hydraulic motor 8, power is expert at
Complete after confluxing, exported by gear M28, then in turn through gear J23, clutch K in star point confluence mechanism224th, gear
G22, gear L25, gear S26, gear I20, clutch KL21 are transferred to output shaft 17, are finally exported via output shaft 17.
3rd section is III section of hydraulic machinery：Under the operating mode, clutch KV34, clutch K224th, clutch KH18 is engaged,
Engine power sequentially passes through gear P35, clutch KV34, gear B 5, gear D 12 and enters planet point confluence mechanism.Engine
Power sequentially passes through gear P35, clutch KV34, gear B 5, gear D 12 and divides the machine that confluxes into planet after the input of input shaft 6
Structure；This rear portion power passes through the gear N29 being connected with the second planet row gear ring 32 and is delivered to gear K27, then by gear
K27 is delivered to hydraulic pump 10, into hydraulic circuit, is then passed back to planet point confluence mechanism by hydraulic motor 8, power is expert at
Complete after confluxing, exported by gear M28, then in turn through gear J23, clutch K224, gear in star point confluence mechanism
G22, gear L25, gear E15, gear H19, clutch KH18 are transferred to output shaft 17, are finally exported via output shaft 17.
Reverse gear I section of hydraulic machinery：Under the operating mode, clutch KR36, clutch K114th, clutch KL21 is engaged；Start
Mechanomotive force sequentially passes through gear P35, gear Q37, clutch KR36, gear A 3, gear D 12 and enters to enter a profession after the input of input shaft 6
Star point confluence mechanism, is delivered to the first planet rows of planetary frame 11 in point confluence mechanism.Hereafter power is divided into two-way：Power all the way
Directly gear C 7 is output to from the first planet row sun gear 9 and the second planet row sun gear 30；Another planet row of road power second
Gear ring 32 connected gear N29, gear K27 and hydraulic pump 10, into hydraulic circuit, are then output to tooth by hydraulic motor 8
Take turns C7；Two-way power is output to gear F16 after gear C 7 confluxes.Then clutch K114, gear S26, gear are passed sequentially through
I20, clutch KL21 are transferred to output shaft 17, are finally exported via output shaft 17.
Reverse gear II section of hydraulic machinery：Under the operating mode, clutch KR36, clutch K224th, clutch KL21 is engaged, and is started
Mechanomotive force sequentially passes through gear P35, gear Q37, clutch KR36, gear A 3, gear D 12 and enters to enter a profession after the input of input shaft 6
Star point confluence mechanism.This rear portion power passes through the gear N29 being connected with the second planet row gear ring 32 and is delivered to gear K27,
Hydraulic pump 10 is delivered to by gear K27 again, into hydraulic circuit, then planet is passed back to by hydraulic motor 8 and divides the machine that confluxes
Structure, power is completed in planet point confluence mechanism after confluxing, and is exported by gear M28, then in turn through gear J23, clutch
Device K224th, gear G22, gear L25, gear S26, gear I20, clutch KL21 are transferred to output shaft 17, finally via output
Axle 17 is exported.
The transmission device to change section logic as shown in table 1.
The three-stage hydraulic machinery of table 1 changes a section logic
The transmission device can realize power shifting, during the intersegmental linking of gearshift, only need to manipulate a clutch, can first engage
Next section of clutch, then separate the clutch of the preceding paragraph, that realizes power does not interrupt transmission, it is ensured that power transmission not in
It is disconnected, operating efficiency is improved, and ensure the comfortableness of gearshift.
The transmission device has two power takings mouthful, PTO1 and PTO2 as shown in Figure 1, difference connecting shaft A2 and axle B4.
The transmission device carries out confluxing for hydraulic power and mechanical output using planetary mechanism, and speed remittance square and two be divided to by one
The hydro-mechanical segment linking of individual point of fast (Compound split) power dividing form of speed remittance is formed.Wherein I section of hydraulic machinery with
In starting, II section of hydraulic machinery is used for low speed working condition, and III section of hydraulic machinery is used to walk at a high speed.Due to using hydraulic power
Compound with mechanical output, transmission efficiency is high compared with hydraulic machine dynamic power shift gear box；The height during operation and transition can be ensured
Transmission efficiency and low oil consumption.Astern condition is two sections, and reverse gear I section of hydraulic machinery and II section of the hydraulic machinery that reverses gear.
Embodiment 2：
As shown in Fig. 2 cancelling the design of height gear compared to Fig. 1 programs, that is, eliminate III section of dead axle tooth of hydraulic machinery
Wheel drive mechanism, therefore eliminate gear L25, gear E15, clutch KH18, clutch compared to the transmission device in embodiment 1
Device KL21 and gear H19.The forward gear of the continuously variable transmittion has two hydro-mechanical segments, and reverse gear is also two hydraulic machineries
Section.
Transmission device in the present embodiment includes：Hydraulic speed regulation loop, planet point confluence mechanism, I section of dead axle of hydraulic machinery
Gear drive, II section of fixed axis gear transmission mechanism of hydraulic machinery and Zheng Dao mechanisms.Wherein hydraulic speed regulation loop, planet point converge
The composition and annexation for flowing mechanism and Zheng Dao mechanisms are same as Example 1.
Due to eliminating clutch KL21, the gear I20 affixed with output shaft 17 is provided only with output shaft 22, in liquid
Clutch KV34, clutch K need to be only engaged during I section of press mechanical pressing127；The power of I section of fixed axis gear transmission mechanism of hydraulic machinery is passed
Passing route is：Engine power sequentially passes through gear P35, clutch KV34, gear B 5, gear D 12 and divides the machine that confluxes into planet
Structure.It is delivered to the first planet rows of planetary frame 11 in point confluence mechanism.Hereafter power is divided into two-way：Power is directly from first all the way
Planet row sun gear 9 is output to gear C 7；Another road power sequentially pass through be connected with the second planet row gear ring 32 gear N29,
Gear K27 is delivered to hydraulic pump 10, into hydraulic circuit, is then output to gear C 7 by hydraulic motor 8；Two-way power is in tooth
After wheel C7 confluxes, gear F16 is output to.Then clutch K is passed sequentially through114th, gear S26, gear I20 are transferred to output shaft
17, finally exported via output shaft 17.
II section of fixed axis gear transmission mechanism of hydraulic machinery includes：Gear J23, clutch K224th, gear G22 and gear I20.
Its middle gear G22 and gear I20 engagements.Clutch KV34 and clutch K need to be only engaged in II section of hydraulic machinery224；Hydraulic pressure
The power transmission line of mechanical II section of fixed axis gear transmission mechanism is：Engine power from input shaft 6 input after, gear P35, from
Clutch KV34, gear B 5, gear D 12 enter planet point confluence mechanism.This rear portion power passes through and the second planet row gear ring
32 connected gear N29 are delivered to gear K27, then are delivered to hydraulic pump 10 by gear K27, into hydraulic circuit, Ran Houjing
Cross hydraulic motor 8 and be passed back to planet point confluence mechanism, power is completed in planet point confluence mechanism after confluxing, by gear M28
Output, then in turn through gear J23, clutch K224th, gear G22, gear I20, are finally exported via output shaft 17.
Reverse gear I section of hydraulic machinery：Under the operating mode, clutch KR36, clutch K114 engagements；Engine power is from input
After axle 6 is inputted, sequentially pass through gear P35, gear Q37, clutch KR36, gear A 3, gear D 12 and divide the machine that confluxes into planet
Structure, is delivered to the first planet rows of planetary frame 11 in point confluence mechanism.Hereafter power is divided into two-way：Power is directly from first all the way
The planet row sun gear 30 of planet row sun gear 9 and second is output to gear C 7, and another road power passes through the second planet row gear ring 32
Gear K27 and hydraulic pump 10 are delivered to, into hydraulic circuit, then gear C 7 is output to by hydraulic motor 8；Two-way power exists
After gear C 7 confluxes, gear F16 is output to.Then clutch K is passed sequentially through114th, gear S26, gear I20, finally via defeated
Shaft 17 is exported.
Reverse gear II section of hydraulic machinery：Under the operating mode, clutch KR36, clutch K224 engagements, engine power is from defeated
Enter after the input of axle 6, sequentially pass through gear P35, gear Q37, clutch KR36, gear A 3, gear D 12 and divide the machine that confluxes into planet
Structure.This rear portion power passes through the gear N29 being connected with the second planet row gear ring 32 and is delivered to gear K27, then by gear
K27 is delivered to hydraulic pump 10, into hydraulic circuit, is then passed back to planet point confluence mechanism by hydraulic motor 8, power is expert at
Complete after confluxing, exported by gear M28, then in turn through gear J23, clutch K in star point confluence mechanism224th, gear
G22, gear I20, are finally exported via output shaft 17.
The design of height gear is eliminated compared to the scheme in embodiment 1, so that gear engagement number of times increase efficiency is reduced,
The overall power density of increased quality gear is reduced, gear is decreased accordingly, but need bigger hydraulic pump, motor
Power.
In summary, presently preferred embodiments of the present invention is these are only, is not intended to limit the scope of the present invention.
Within the spirit and principles of the invention, any modification, equivalent substitution and improvements made etc., should be included in the present invention's
Within protection domain.
Claims (6)
1. a kind of loader hydraulic mechanical stepless transmission device, it is characterised in that including：Hydraulic speed regulation loop, planet point conflux
Mechanism, I section of fixed axis gear transmission mechanism of hydraulic machinery, II section of fixed axis gear transmission mechanism of hydraulic machinery, III section of hydraulic machinery are fixed
Shaft gear transmission mechanism and Zheng Dao mechanisms；
The hydraulic speed regulation loop includes：The closed hydraulic loop being made up of hydraulic pump (10) and hydraulic motor (8)；The hydraulic pressure
Pump (10) is two-way variable displacement pump, and the hydraulic motor (8) is double-action variable displacement motor；
The Zheng Dao mechanisms include：Axle B (4), input shaft (6), gear A (3), gear B (5), gear P (35), gear Q (37),
Clutch KV (34) and clutch KR (36)；Be fixed in gear P (35) on the input shaft (6) by clutch KV (34) with
Gear B (5) of the empty set on input shaft (6) is connected；The gear Q (37) being fixed on the axle B (4) passes through clutch KR (36)
It is connected with gear A (3) of the empty set on axle B (4)；The gear Q (37) is engaged with gear P (35)；
The planet point confluence mechanism includes：Two planet rows, gear C (7), gear D (12), gear M (28) and gear N
(29)；Wherein the first planet row sun gear (9), the second planet row sun gear (30) and the gear C (7) are coaxially connected, and
The hydraulic motor (8) is connected with the first planet row sun gear (9)；Second planet row planet carrier (31) and the first planet toothrow circle
(13) and gear M (28) is connected, the first planet rows of planetary frame (11) and the gear D (12) are connected, the gear D (12) point
Do not engaged with gear A (3) and gear B (5)；Second planet row gear ring (32) is connected with the gear N (29)；The gear N
(29) and with the coaxial affixed gear K (27) of hydraulic pump (10) engage；
Described I section of fixed axis gear transmission mechanism of hydraulic machinery includes：Gear F (16), clutch K1(14), gear S (26), gear I
And clutch KL (21) (20)；The gear F (16) is engaged with the gear C (7) in the planet point confluence mechanism；The gear
F (16) passes through clutch K1(14) it is connected with gear S (26), the gear S (26) is engaged with gear I (20)；The gear I
(20) it is connected by clutch KL (21) with output shaft (17)；
Described II section of fixed axis gear transmission mechanism of hydraulic machinery includes：Gear J (23), clutch K2(24), gear G (22), gear
L (25), gear S (26), gear I (20) and clutch KL (21)；Its middle gear J (23) divides in confluence mechanism with the planet
Gear M (28) is engaged, while the gear J (23) passes through clutch K2(24) it is connected with gear G (22), the gear G (22)
Engaged with the coaxial affixed gear (25) of the gear S (26)；
Described III section of fixed axis gear transmission mechanism of hydraulic machinery includes：Gear J (23), clutch K2(24), gear G (22), gear
L (25), gear E (15), gear H (19) and clutch KH (18)；With the coaxial affixed gear E (15) of the gear L (25) and
Gear H (19) is engaged, and the gear H (19) is connected by clutch KH (18) with output shaft (17).
2. loader hydraulic mechanical stepless transmission device as claimed in claim 1, it is characterised in that the hydraulic speed regulation loop
In also include slippage pump (33), the slippage pump (33) maintains the low pressure of the closed hydraulic loop, and is the hydraulic pressure
Pump (10) and hydraulic motor (8) provide control oil pressure.
3. loader hydraulic mechanical stepless transmission device as claimed in claim 1, it is characterised in that also including axle A (2) and admittedly
It is connected on axle A (2) and gear Q (37) the meshed gears R (38)；Power taking is provided with the axle A (2) and axle B (4)
Mouthful.
4. the loader hydraulic mechanical stepless transmission device as described in claim 1,2 or 3, it is characterised in that the stepless transmission
The forward gear of device includes three hydro-mechanical segments, is respectively used to starting, low speed operation and walks at a high speed；
During for starting to walk, the clutch KV (34), clutch K1(14), clutch KL (21) is engaged；Power is from the input shaft
(6) after inputting, gear P (35), clutch KV (34), gear B (5), gear D (12) is sequentially passed through and divides the machine that confluxes into planet
Structure；Hereafter power is divided into two-way：The first planet row sun gear (9) is directly over all the way is output to gear C (7)；Another road is successively
Hydraulic pump (10) is delivered to by the gear N (29), the gear K (27) that are connected with the second planet row gear ring (32), then by liquid
Pressure motor (8) is output to gear C (7)；Two-way power passes sequentially through gear F (16), clutch K after gear C (7) confluxes1
(14), gear S (26), gear I (20), clutch KL (21) are transferred to output shaft (17)；
During for low speed operation, clutch KV (34), clutch K2(24), clutch KL (21) is engaged；Power is from input shaft (6)
After input, sequentially pass through gear P (35), clutch KV (34), gear B (5), gear D (12) and enter planet point confluence mechanism；This
Rear portion power passes through the gear N (29) being connected with the second planet row gear ring (32) and is delivered to gear K (27), then by gear
K (27) is delivered to hydraulic pump (10), is then passed back to planet point confluence mechanism by hydraulic motor (8), and power converges in planet point
Complete after confluxing, exported by gear M (28) in stream mechanism；Then in turn through gear J (23), clutch K2(24), gear G
(22), gear L (25), gear S (26), gear I (20), clutch KL (21) are transferred to output shaft 17；
During for walking at a high speed, clutch KV (34), clutch K2(24), clutch KH (18) is engaged, and power is from input shaft (6)
After input, sequentially pass through gear P (35), clutch KV (34), gear B (5), gear D (12) and enter planet point confluence mechanism；This
Rear portion power passes through the gear N (29) being connected with the second planet row gear ring (32) and is delivered to gear K (27), then by gear
K (27) is delivered to hydraulic pump (10), is then passed back to planet point confluence mechanism by hydraulic motor (8), and power converges in planet point
Complete after confluxing, exported by gear M (28) in stream mechanism；Then in turn through gear J (23), clutch K2(24), gear G
(22), gear L (25), gear E (15), gear H (19), clutch KH (18) are transferred to output shaft (17).
5. the loader hydraulic mechanical stepless transmission device as described in claim 1,2 or 3, it is characterised in that the stepless transmission
Device has two hydro-mechanical segments of reversing gear：
As the clutch KR (36), clutch K1(14) when, clutch KL (21) is engaged, the continuously variable transmittion is in and reversed gear
I section of hydraulic machinery；Power sequentially passes through gear P (35), gear Q (37), clutch KR (36), tooth after input shaft (6) input
Take turns A (3), gear D (12) and enter planet point confluence mechanism；Hereafter power is divided into two-way：Planet is directly entered all the way divides the machine that confluxes
Structure, is directly over the first planet row sun gear (9) and is output to gear C (7) all the way；Another road is sequentially passed through and the second planet toothrow
Circle (32) connected gear N (29), gear K (27) are delivered to hydraulic pump (10), are then output to gear by hydraulic motor (8)
C(7)；Two-way power passes sequentially through gear F (16), clutch K after gear C (7) confluxes1(14), gear S (26), gear I
(20), clutch KL (21) is transferred to output shaft (17)；
As the clutch KR (36), clutch K2(24) when, clutch KL (21) is engaged, the continuously variable transmittion is in and reversed gear
II section of hydraulic machinery；Motive sequentially passes through gear P (35), gear Q (37), clutch KR after input shaft (6) input
(36), gear A (3), gear D (12) enter planet point confluence mechanism；This rear portion power passes through and the second planet row gear ring
(32) connected gear N (29) is delivered to gear K (27), hydraulic pump (10), is then passed back to planet point by hydraulic motor (8)
Confluence mechanism, power is completed in planet point confluence mechanism after confluxing, and is exported by gear M (28), then in turn through gear J
(23), clutch K2(24), gear G (22), gear L (25), gear S (26), gear I (20), clutch KL (21) are transferred to
Output shaft (17).
6. a kind of loader hydraulic mechanical stepless transmission device, it is characterised in that including：Hydraulic pressure as described in claim 1
Speed control loop, planet as described in claim 1 point confluence mechanism, hydraulic machinery I section of fixed axis gear transmission mechanism, hydraulic press
II section of fixed axis gear transmission mechanism of tool and Zheng Dao mechanisms as described in claim 1；
Described I section of fixed axis gear transmission mechanism of hydraulic machinery includes：Gear F (16), clutch K1(14), gear S (26) and tooth
Take turns I (20)；The gear F (16) is engaged with the gear C (7) in the planet point confluence mechanism；The gear F (16) by from
Clutch K1(14) it is connected with gear S (26), the gear S (26) is engaged with gear I (20)；The gear I (20) is fixed in defeated
On shaft (17)；
Described II section of fixed axis gear transmission mechanism of hydraulic machinery includes：Gear J (23), clutch K2(24), gear G (22), gear
S (26) and gear I (20)；Its middle gear J (23) is engaged with the gear M (28) in the planet point confluence mechanism, while described
Gear J (23) passes through clutch K2(24) it is connected with gear G (22), the gear G (22) is engaged with gear I (20).
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| Application Number | Priority Date | Filing Date | Title |
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| CN201710299574.7A CN107152510B (en) | 2017-05-02 | 2017-05-02 | Loader hydraulic mechanical stepless transmission device |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710299574.7A CN107152510B (en) | 2017-05-02 | 2017-05-02 | Loader hydraulic mechanical stepless transmission device |
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| CN107152510B CN107152510B (en) | 2019-03-26 |
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| CN111536202A (en) * | 2020-04-29 | 2020-08-14 | 柳工柳州传动件有限公司 | Transmission device for loader, control method of transmission device and loader |
| CN115949716A (en) * | 2023-03-09 | 2023-04-11 | 北京理工大学 | Hydraulic mechanical composite stepless transmission device of high-speed engineering vehicle |
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| US20090011901A1 (en) * | 2005-12-19 | 2009-01-08 | Caterpillar Inc. | Oil warming strategy for transmission |
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| CN115949716A (en) * | 2023-03-09 | 2023-04-11 | 北京理工大学 | Hydraulic mechanical composite stepless transmission device of high-speed engineering vehicle |
| CN115949716B (en) * | 2023-03-09 | 2023-05-09 | 北京理工大学 | Hydraulic mechanical compound stepless transmission device for high-speed engineering vehicle |
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