CN107143636A - A kind of loading machine three-stage Hydromechanical Stepless Transmission device - Google Patents
A kind of loading machine three-stage Hydromechanical Stepless Transmission device Download PDFInfo
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- CN107143636A CN107143636A CN201710299592.5A CN201710299592A CN107143636A CN 107143636 A CN107143636 A CN 107143636A CN 201710299592 A CN201710299592 A CN 201710299592A CN 107143636 A CN107143636 A CN 107143636A
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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
- F16H3/00—Toothed gearings for conveying rotary motion with variable gear ratio or for reversing rotary motion
- F16H3/44—Toothed gearings for conveying rotary motion with variable gear ratio or for reversing rotary motion using gears having orbital motion
- F16H3/76—Toothed gearings for conveying rotary motion with variable gear ratio or for reversing rotary motion using gears having orbital motion with an orbital gear having teeth formed or arranged for obtaining multiple gear ratios, e.g. nearly infinitely variable
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- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
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- Control Of Transmission Device (AREA)
Abstract
Continuously variable transmittion is combined with three-stage hydraulic machinery the invention discloses a kind of loading machine, comprising three hydro-mechanical segments, is started to walk using hydro-mechanical segment, it is possible to increase low speed rotation efficiency.The transmission device is specifically included：Importation, hydraulic speed regulation loop, point confluence 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 fixed axis gear transmission mechanism of hydraulic machinery, reverse gear mechanism and output par, c.The transmission device carries out confluxing for hydraulic power and mechanical output using planetary mechanism, and converging the hydro-mechanical segments of fast forms by three sections of point squares is continuously connected and forms.Ith section is used to start to walk, and the IIth section is used for low speed working condition, and the IIIth section is used to walk at a high speed.Astern condition is two sections, and respectively reverse gear I section of hydraulic machinery and II section of the hydraulic machinery that reverses gear.Due to compound using hydraulic power and mechanical output, it is ensured that high transmission efficiency and low oil consumption during operation and transition.
Description
Technical field
Invention is related to a kind of continuously variable transmittion, and in particular to a kind of three-stage hydraulic machinery is combined continuously variable transmittion,
Belong to technical field of power transmission.
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.
CN104136812A, CN104136813A, US2006/0276291A1 of Caterpillar Tractor disclose a kind of dress
Carrier aircraft includes the hydro-mechanical segment and the mechanical section of a high-speed hydraulic of two continuous change, two with many gear hydromechanical transmissions
Individual continuous hydro-mechanical segment is respectively used to starting and low speed operation, and high-speed hydraulic machinery section is used for transition of walking.Due to using
The two-way of hydraulic machinery power is combined, hydraulic pressure road transmitting portions power, therefore transmission efficiency is compared with hydraulic machine power shifting speed change
Case is greatly improved.But switch between continuous hydro-mechanical segment and the mechanical section of high-speed hydraulic, the speed of Hydraulic Elements does not connect
Continuous, there is speed difference in clutch, it is impossible to realize power shifting.
ZF companies US8328676B2 discloses a kind of loader hydraulic mechanical driving device, using 2 or 3 hydraulic pressure
Robotic segments, using point speed remittance square (Output split) and the power dividing form for dividing speed to converge fast (Compound split), biography
Efficiency of movement is higher.Hydraulic Elements power needed for 2 hydro-mechanical segment transmission schemes is larger；3 hydro-mechanical segment transmission schemes,
Switch between 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 2 segmentation hydromechanical transmission, pure
The starting of hydraulic pressure section and hydro-mechanical segment operation and walking.The B1 of Dana Rexroth company EP 2 280 192 disclose one kind 3
Segmentation 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 loading machine with three sections of continuous hydraulic mechanical driving devices, using five bars point
Confluence mechanism realizes three continuous hydro-mechanical segments, is respectively used to starting, low speed operation and walks at a high speed；Reverse gear shift includes two
Individual hydro-mechanical segment.Three active section continuous changes, the speed consecutive variations of Hydraulic Elements, clutch switches without speed difference, manipulates
Simply, transmission efficiency.
Described loading machine three-stage Hydromechanical Stepless Transmission device includes：Importation, hydraulic speed regulation loop, point
Confluence mechanism, I section of fixed axis gear transmission mechanism of hydraulic machinery, II section of fixed axis gear transmission mechanism of hydraulic machinery, hydraulic machinery III
Section fixed axis gear transmission mechanism, reverse gear mechanism and output par, c；
The importation includes：Axle A, the gear A being fixed on axle A and gear S, axle B and the gear being fixed on axle B
T；The gear A is connected with a point confluence mechanism, gear S and gear the T engagement；The mechanical output for coming from engine passes through axle
It is divided into two-way after A inputs：Gear S, gear T, axle B are passed sequentially through all the way passes to hydraulic speed regulation loop；Another road is passed sequentially through
Gear A passes to a point confluence mechanism；
The hydraulic speed regulation loop includes：Hydraulic pump, hydraulic motor and slippage pump；The hydraulic pump is two-way variable displacement pump；
The hydraulic pump constitutes closed hydraulic loop with hydraulic motor, and the slippage pump maintains the low pressure of closed hydraulic loop, and
Control oil pressure is provided for hydraulic pump；The hydraulic pump is connected with axle B；The hydraulic pump converts the mechanical output for coming from axle B
To pass to hydraulic motor by hydraulic circuit after hydraulic energy；Hydraulic energy transfer is that mechanical energy is transferred to point by the hydraulic motor
Confluence mechanism；
Described point of confluence mechanism includes the external toothing pair being made up of the first sun gear, double star wheel, planet carrier, the second sun gear
Star is arranged and the first gear ring, the second gear ring；First sun gear and hydraulic motor are connected, and first gear ring and gear C are connected,
Gear A engagement in the gear C and input mechanism；Second gear ring and gear R are connected；Second sun gear and gear
P is connected；Planet carrier and the gear Q is connected；
Described I section of fixed axis gear transmission mechanism of hydraulic machinery includes：Gear M, clutch KV1, gear D and gear F；Institute
Gear M is stated to engage with the gear R in described point of confluence mechanism；The clutch KV1Drive end and the tooth that is supported on housing
The gear shaft for taking turns D is connected, and Partner is connected with the gear M；Gear D and gear the F engagements, the gear F and output section
Split-phase connects；
Described II section of fixed axis gear transmission mechanism of hydraulic machinery includes：Gear N and clutch KV2；The gear N and described
The gear P engagements divided in confluence mechanism；The clutch KV2Drive end and the gear shaft of gear D that is supported on housing consolidate
Even, Partner is connected with gear N；
Described III section of fixed axis gear transmission mechanism of hydraulic machinery includes：Gear J, gear I and clutch KV3；Described point of remittance
Gear Q in stream mechanism is engaged by gear J with the gear I；The clutch KV3Drive end and be supported on housing
Gear H gear shaft is connected, and Partner is connected with gear I；
The reverse gear mechanism includes：Clutch KR1, clutch KR2, gear K, gear L and gear E；The gear K and liquid
Gear M engagements in I section of fixed axis gear transmission mechanism of press mechanical pressing；Gear L and hydro-mechanical segment fixed axis gear II driver
Gear N engagements in structure；The clutch KR1With clutch KR2Drive end with the gear for the gear E being supported on housing
Axle is connected, clutch KR1Partner be connected with gear K, clutch KR2Partner be connected with gear L；The gear E and tooth
F engagements are taken turns, gear F is connected with output par, c；
The output par, c includes：Gear H, the gear G being meshed with gear H, it is supported on housing and coaxial with gear G
Affixed output shaft；The gear F and the gear H are coaxially affixed.
Beneficial effect：
(1) three continuous hydro-mechanical segments can be achieved using five bars point confluence mechanism in the present invention, and the Ith section is used to start to walk,
IIth section is used for low speed operation, and the IIIth section is used to walk at a high speed；Hydro-mechanical segment starts to walk, and can improve the transmission efficiency of low speed；Section
Between switching only need to manipulate 1 clutch, can be achieved to take over seamlessly.
(2) present invention is combined using the power of hydraulic pressure and machinery, and hydraulic pressure road transmitting portions power, most of power passes through
Mechanical road transmission, realizes high transmission efficiency and variable speed, can improve the oil consumption of operating efficiency and reduction engine.It is whole stepless
Speed governing, can make engine often work in economic speed, improve fuel economy, reduce the noise of engine.
(3) the zero-speed difference switching of intersegmental clutch can be achieved, improves the life-span of clutch friction plate, simplifies gearshift and patrol
Collect the design with steerable system.
(4) due to the presence of hydraulic speed regulation system, power shifting can be achieved, next section of clutch is first engaged, then unclamp
The clutch of the preceding paragraph, it is ensured that the not interrupt output of power, improves operating efficiency.
(5) 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 combined the transmission sketch of continuously variable transmittion for the hydraulic machinery of the present invention；
Hydraulic pump, motor rotary speed figures of the Fig. 2 for the present invention；
Fig. 3 is hydraulic pump maximum pressure figure of the invention；
Fig. 4 is maximum output torque figure of the invention；
Fig. 5 is efficiency chart of the invention.
Wherein：1- housings, 2- hydraulic pumps, 3- slippage pumps, 4- gear As, the gear rings of 5- first, 6- gear Cs, the sun of 7- first
Wheel, 8- hydraulic motors, 9- double stars wheel, 10- clutches KV2, 11- gear Ds, 12- clutches KR2, 13- gear E, 14- gears F,
15- gear G, 16- output shaft, 17- gear H, 18- clutches KV3, 19- gear I, 20- clutches KR1, 21- gear J, 22- teeth
Take turns K, 23- gear L, 24- gear M, 25- clutch KV1, 26- gear N, 27- gear P, 28- gear Q, 29- gears R, 30-
Two sun gears, 31- planet carriers, the gear rings of 32- second, 33- power taking axle A, 34- gear S, 35- gear T, 36- power taking axles B.
Embodiment
The present invention will now be described in detail with reference to the accompanying drawings and examples.
The present embodiment provides a kind of loading machine and is combined continuously variable transmittion with three-stage hydraulic machinery, includes three hydraulic presses
Tool section, is started to walk, it is possible to increase low speed rotation efficiency using hydro-mechanical segment.Compared to loading machine hydraulic machine power shifting speed change
Case, the transmission device that the present embodiment is provided can greatly improve the transmission efficiency of transmission device, and engine can be made often to work in
Economic speed is interval, reduces oil consumption and the noise level of loading machine.
The transmission device carries out confluxing for hydraulic power and mechanical output using planetary mechanism, is converged by three sections of point squares fast
Continuously linking is formed the hydro-mechanical segment of (Input split) form.Ith section is used to start to walk, and the IIth section is used for low speed operation work
Condition, the IIIth section is used to walk at a high speed.Due to being combined using hydraulic power and mechanical output, transmission efficiency is changed compared with hydraulic machine power
Keep off gearbox high；The high transmission efficiency during operation and transition and low oil consumption can be ensured.Astern condition is two sections, is respectively fallen
I section of gear hydraulic machinery and II section of the hydraulic machinery that reverses gear.
As shown in figure 1, the transmission device is specifically included：Importation, hydraulic speed regulation loop, point confluence mechanism, hydraulic press
I section of fixed axis gear transmission mechanism of tool, II section of fixed axis gear transmission mechanism of hydraulic machinery, III section of fixed axis gear driver of hydraulic machinery
Structure, reverse gear mechanism and output par, c.
Wherein importation includes：Power taking axle A33, the gear A 4 being fixed on power taking axle A33 and gear S34, power taking axle
The B36 and gear T35 being fixed on power taking axle B36；Gear C 6 in gear A 4 and point confluence mechanism is engaged, gear S34 and tooth
Take turns T35 engagements.Power taking axle B36 is connected with hydraulic pump 2；Come from the mechanical output of engine by after power taking axle A33 inputs points
Into two-way：Gear S34, gear T35, power taking axle B36 are passed sequentially through all the way passes to hydraulic speed regulation loop；Lead to successively all the way in addition
Cross gear A 4, gear C 6 and pass to a point confluence mechanism.
Hydraulic speed regulation loop includes：Hydraulic pump 2, hydraulic motor 8 and slippage pump 3；Hydraulic pump 2 is two-way variable displacement pump, hydraulic pressure
Motor 8 is fixed displacement motor；Hydraulic pump 2 constitutes closed hydraulic loop with hydraulic motor 8, and slippage pump 3-dimensional holds closed hydraulic loop
Low pressure, and provide control oil pressure for hydraulic pump 2.Hydraulic pump 2 and power taking axle B36 are connected, hydraulic motor 8 and the machine that point confluxes
The first sun gear 7 in structure is connected.The mechanical output for coming from power taking axle B36 is converted into after hydraulic energy by hydraulic pump 2 and passed through
Hydraulic circuit passes to hydraulic motor 8, and hydraulic energy transfer is that mechanical energy drives sun gear 7 by hydraulic motor 8, so that by this portion
Power is divided to be passed back to mechanical circuit again.
It is divided to confluence mechanism to arrange and add what two gear rings (the first gear ring 5, the second gear ring 32) were constituted by external toothing double star
Five-rod, the external toothing double star row is included by the first sun gear 7, double star wheel 9, the sun gear 30 of planet carrier 31 and second；Machine
Tool road power is inputted from the first gear ring 5, and hydraulic pressure road power is inputted from the first sun gear 7, the second gear ring 32, the second sun gear 30,
Planet carrier 31 is respectively I section of hydraulic machinery, II section of hydraulic machinery, the output of III section of hydraulic machinery.Wherein the first sun gear 7 and liquid
Pressure motor 8 is connected；First gear ring 5 and gear C 6 are connected, and the gear A 4 of gear C 6 and input mechanism is engaged；The He of second gear ring 32
Gear R29 is connected, the gear M24 engagements in I section of fixed axis gear transmission mechanism of gear R29 and hydraulic machinery；Second sun gear 30
It is connected with gear P27, the gear N26 engagements in II section of fixed axis gear transmission mechanism of gear P27 and hydraulic machinery；The He of planet carrier 31
Gear Q28 is connected, and III section of fixed axis gear gear wheel J21 of gear Q28 and hydraulic machinery is meshed.Come from input mechanism
Inputted, can distinguished after confluxing through a point confluence mechanism by the sun gear 7 of gear C 6 and first respectively with the power of hydraulic speed regulation loop
Hydraulic machinery I is corresponded to by gear R29, gear P27, gear Q28 outputs, II, III section of gear, specific gear stages are depended on
Hydraulic machinery I, II, the clutch connecting state of III section of gear.
I section of fixed axis gear transmission mechanism of hydraulic machinery includes：Gear R29, gear M24, clutch KV125th, gear D 11
With gear F14.Gear K22 in its middle gear M24 and gear R29 engagements, opposite side and reverse gear mechanism is meshed；Clutch
KV1The gear shaft of 25 drive end and the gear D 11 being supported on housing 1 is connected, and Partner is connected with gear M24, works as clutch
Device KV1During 25 engagement, power can be transferred to gear D 11 by gear M24.Gear D 11 and gear F14 are meshed, gear F14 and
The gear H17 of output par, c is connected.As clutch KV1During 25 engagement, the power for coming from point confluence mechanism passes through hydraulic machinery I
The transmission mechanism output of section fixed axis gear, power flow direction is gear R29, gear M24, gear D 11, gear F14, gear H17.
II section of fixed axis gear transmission mechanism of hydraulic machinery includes：Gear P27, gear N26, clutch KV210 and and liquid
I section of fixed axis gear transmission mechanism of press mechanical pressing shared gear D 11 and gear F14.Its middle gear N26 and gear P27 engagements, gear
Gear L23 in N26 opposite sides and reverse gear mechanism is meshed；Clutch KV210 drive end and the tooth being supported on housing 1
The gear shaft for taking turns D11 is connected, and Partner is connected with gear N26, as clutch KV1During 25 engagement, gear N26 can be by power
It is transferred to gear D 11.Gear D 11 and gear F14 are meshed, and the gear H17 of gear F14 and output par, c is connected.Work as clutch
KV2During 10 engagement, the power for coming from point confluence mechanism is exported by II section of fixed axis gear transmission mechanism of hydraulic machinery, power flow
To for gear P27, gear N26, gear D 11, gear F14, gear H17.
III section of fixed axis gear transmission mechanism of hydraulic machinery includes：Gear Q28, gear J21, gear I19 and clutch
KV318.Its middle gear J21 sides and gear Q28 engagements, opposite side and gear I19 are meshed；Clutch KV318 drive end with
The gear shaft for the gear H17 being supported on housing 1 is connected, and Partner is connected with gear I19, as clutch KV3During 18 engagement, tooth
Power can be transferred to gear H17 by wheel I19.As clutch KV3During 18 engagement, the power for coming from point confluence mechanism passes through liquid
Press mechanical pressing section III fixed axis gear transmission mechanism output, power flow direction is gear Q28, gear J21, gear I19, gear H17.
Reverse gear mechanism includes：Clutch KR120th, clutch KR212nd, gear K22, gear L23, gear E13 and gear F14.
Gear M24 engagements in I section of fixed axis gear transmission mechanism of its middle gear K22 and hydraulic machinery；Gear L23 and hydro-mechanical segment are fixed
Gear N26 engagements in the transmission mechanism of shaft gear II；Clutch KR120 and clutch KR212 drive end is with being supported on housing
The gear shaft of gear E13 on 1 is connected, clutch KR120 Partner is connected with gear K22, clutch KR212 Partner
It is connected with gear L23, as clutch KR1During 20 engagement, power can be transferred to gear 13E by gear K22, as clutch KR212
Engagement when, power can be transferred to gear E13 by gear L23；Gear E13 and gear F14 engagements, gear F14 and output section
Gear H17 in point is connected.As clutch KR1During 20 engagement, come from the power of I section of fixed axis gear transmission mechanism of hydraulic machinery
Reversely exported by gear M24, gear K22, gear E13, gear F14, gear H17, for the I section of gear of hydraulic machinery that reverse gear.When
Clutch KR2During 12 engagement, the power for coming from II section of fixed axis gear transmission mechanism of hydraulic machinery passes through gear N26, gear
L23, gear E13, gear F14, gear H17 are reversely exported, for the II section of gear of hydraulic machinery that reverse gear.
Output par, c includes：Gear H17, the gear G15 being meshed with gear H17, it is supported on housing 1 and and gear
The coaxial affixed output shafts 16 of G15, engine power is output to loading machine after hydromechanical transmission case by output par, c
Front-rear axle.
The transmission device of the present embodiment has two power takings mouthful, is PTO1 and PTO2, difference connecting shaft A33 and axle B36.
The transmission principle that each section of the continuously variable transmittion is：
First paragraph is I section of hydraulic machinery：Engine passes through gear S34, gear T35 all the way by the axle A33 power inputted
Hydraulic pump 2 is delivered to, then is delivered to hydraulic motor 8, the first sun gear 7；Another road is delivered to first by gear A 4, gear C 6
Gear ring 5, two-way power converges in point confluence mechanism.In this mode, clutch KV125 engagements, power after converging is from the
Two gear rings 32 are exported, then in turn through gear R29, gear M24, clutch KV125th, gear D 11, gear F14, gear H17
With gear G15 outputs.
Second segment is II section of hydraulic machinery：Engine passes through gear S34, gear T35 all the way by the axle A33 power inputted
Hydraulic pump 2 is delivered to, then is delivered to hydraulic motor 8, the first sun gear 7；Another road is delivered to first by gear A 4, gear C 6
Gear ring 5, two-way power converges in point confluence mechanism.In this mode, clutch KV210 engagements, power after converging is from the
Two sun gears 30 are exported, then in turn through gear P27, gear N26, clutch KV210th, gear D 11, gear F14, gear
H17 and gear G15 outputs.
3rd section is III section of hydraulic machinery：Engine passes through gear S34, gear T35 all the way by the axle A33 power inputted
Hydraulic pump 2 is delivered to, then is delivered to hydraulic motor 8, the first sun gear 7；Another road is delivered to first by gear A 4, gear C 6
Gear ring 5, two-way power converges in point confluence mechanism.In this mode, clutch KV318 engagements, power after converging is from row
Carrier 31 is exported, then in turn through gear Q28, gear J21, gear I19, clutch KV318th, gear H17 and gear G15 are defeated
Go out..
Reverse gear I section of hydraulic machinery：The power that engine is inputted by axle A33 is all the way by gear S34, gear T35 transmission
To hydraulic pump 2, then it is delivered to hydraulic motor 8, the first sun gear 7；Another road is delivered to the first gear ring by gear A 4, gear C 6
5, two-way power converges in point confluence mechanism.In this mode, clutch KR120 engagements, power after converging is from the second tooth
Circle 32 is exported, by gear R29, gear M24, gear K22, clutch KR120th, gear E13, gear F14, gear H17 and tooth
Take turns G15 outputs.
Reverse gear II section of hydraulic machinery：The power that engine is inputted by axle A33 is all the way by gear S34, gear T35 transmission
To hydraulic pump 2, then it is delivered to hydraulic motor 8, the first sun gear 7；Another road is delivered to the first gear ring by gear A 4, gear C 6
5, two-way power converges in point confluence mechanism.In this mode, clutch KR212 engagement, the power after converging from second too
Sun wheel 30 is exported, by gear P27, gear N26, gear L23, clutch KR212nd, gear E13, gear F14, gear H17 and
Gear G15 is exported.
The present invention to change section logic as shown in table 1.
The three-stage hydraulic machinery of table 1 changes a section logic
The achievable power of the present invention changes section, during intersegmental linking, can first engage next section of clutch, then separate the preceding paragraph
Clutch, realize power does not interrupt transmission, it is ensured that not interrupting for power transmission, improves operating efficiency, and ensure relaxing for gearshift
Adaptive.
5 tons of loading machines are matched in the present embodiment, hydraulic pump, the rotating speed of motor are with the laws about modified speed of speed as shown in Fig. 2 liquid
The invariablenes turning speed of press pump, it is proportional to engine speed.The rotating speed of hydraulic motor is continually changing, so as to realize the nothing of output speed
Level regulation.The maximum pressure of hydraulic pump is with the laws about modified speed of speed as shown in figure 3, pressure progressively drops with the increase of hydro-mechanical segment
It is low.The maximum output torque of the present embodiment is with the laws about modified speed of speed as shown in figure 4, efficiency curve is as shown in figure 5, solid line is pure
The efficiency curve of III section of I section of hydraulic machinery, II section of hydraulic machinery and hydraulic machinery, dotted line is hydraulic machine dynamic power shift gear box
Efficiency curve.It follows that the transmission efficiency of the transmission device in the present embodiment becomes apparently higher than hydraulic machine power shifting
Fast case.
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 (3)
1. a kind of loading machine three-stage Hydromechanical Stepless Transmission device, it is characterised in that including：Importation, hydraulic pressure are adjusted
Fast loop, point confluence mechanism, I section of fixed axis gear transmission mechanism of hydraulic machinery, hydraulic machinery II section of fixed axis gear transmission mechanism, liquid
III section of fixed axis gear transmission mechanism of press mechanical pressing, reverse gear mechanism and output par, c；
The importation includes：Axle A (33), the gear A (4) being fixed on axle A (33) and gear S (34), axle B (36) and solid
It is connected on the gear T (35) on axle B (36)；The gear A (4) is connected with a point confluence mechanism, the gear S (34) and gear T
(35) engage；Come from the mechanical output of engine by being divided into two-way after axle A (33) inputs：Gear S is passed sequentially through all the way
(34), gear T (35), axle B (36) pass to hydraulic speed regulation loop；Another road passes sequentially through gear A (4) and passes to the machine that point confluxes
Structure；
The hydraulic speed regulation loop includes：Hydraulic pump (2), hydraulic motor (8) and slippage pump (3)；The hydraulic pump (2) is two-way
Variable pump；The hydraulic pump (2) constitutes closed hydraulic loop with hydraulic motor (8), and the slippage pump (3) maintains Closed Hydraulic to return
The low pressure on road, and provide control oil pressure for hydraulic pump (2)；The hydraulic pump (2) is connected with axle B (36)；The hydraulic pump
(2) mechanical output for coming from axle B (36) is converted into after hydraulic energy and hydraulic motor (8) is passed to by hydraulic circuit；It is described
Hydraulic energy transfer is that mechanical energy is transferred to a point confluence mechanism by hydraulic motor (8)；
Described point of confluence mechanism includes being made up of the first sun gear (7), double star wheel (9), planet carrier (31), the second sun gear (30)
External toothing double star row and the first gear ring (5), the second gear ring (32)；First sun gear (7) and hydraulic motor (8) are connected,
First gear ring (5) and gear C (6) are connected, gear A (4) engagement in the gear C (6) and input mechanism；Described second
Gear ring (32) and gear R (29) are connected；Second sun gear (30) and gear P (27) are connected；The planet carrier (31) and tooth
Q (28) is taken turns to be connected；
Described I section of fixed axis gear transmission mechanism of hydraulic machinery includes：Gear M (24), clutch KV1(25), gear D (11) and tooth
Take turns F (14)；The gear M (24) is engaged with the gear R (29) in described point of confluence mechanism；The clutch KV1(25) master
The gear shaft of moved end and the gear D (11) being supported on housing (1) is connected, and Partner is connected with the gear M (24)；The tooth
D (11) and gear F (14) engagements are taken turns, the gear F (14) is connected with output par, c；
Described II section of fixed axis gear transmission mechanism of hydraulic machinery includes：Gear N (26) and clutch KV2(10)；The gear N
(26) gear P (27) engagements and in described point of confluence mechanism；The clutch KV2(10) drive end is with being supported on housing
(1) gear shaft of the gear D (11) on is connected, and Partner is connected with gear N (26)；
Described III section of fixed axis gear transmission mechanism of hydraulic machinery includes：Gear J (21), gear I (19) and clutch KV3(18)；Institute
The gear Q (28) stated in point confluence mechanism is engaged by gear J (21) with the gear I (19)；The clutch KV3(18)
Drive end and the gear H (17) being supported on housing (1) gear shaft are connected, and Partner is connected with gear I (19)；
The reverse gear mechanism includes：Clutch KR1(20), clutch KR2(12), gear K (22), gear L (23) and gear E
(13)；Gear M (24) engagements in I section of fixed axis gear transmission mechanism of the gear K (22) and hydraulic machinery；The gear L
(23) gear N (26) engagements and in the transmission mechanism of hydro-mechanical segment fixed axis gear II；The clutch KR1And clutch (20)
KR2(12) gear E (13) of the drive end with being supported on housing (1) gear shaft is connected, clutch KR1(20) passive
End is connected with gear K (22), clutch KR2(12) Partner is connected with gear L (23)；The gear E (13) and gear F
(14) engage, gear F (14) is connected with output par, c；
The output par, c includes：Gear H (17), the gear G (15) being meshed with gear H (17), be supported on housing (1) and
With the coaxial affixed output shafts (16) of gear G (15)；The gear F (14) and the gear H (17) are coaxial affixed.
2. a kind of loading machine three-stage Hydromechanical Stepless Transmission device as claimed in claim 1, it is characterised in that the nothing
Gear stage includes three hydro-mechanical segments：
First paragraph is I section of hydraulic machinery：In this mode, the clutch KV125 engagements；The power inputted by axle A (33)
Hydraulic pump (2) is delivered to by gear S (34), gear T (35) all the way, then the first sun gear is delivered to by hydraulic motor (8)
(7)；Another road is delivered to the first gear ring (5) by gear A (4), gear C (6), after two-way power converges in point confluence mechanism
From the second gear ring (32) output, then in turn through gear R (29), gear M (24), clutch KV1(25), gear D (11), tooth
Take turns F (14), gear H (17) and gear G (15) outputs；
Second segment is II section of hydraulic machinery：In this mode, clutch KV2(10) engage, the power one inputted by axle A (33)
Road is delivered to hydraulic pump (2) by gear S (34), gear T (35), then is delivered to the first sun gear by hydraulic motor (8)
(7)；Separately riches all the way is delivered to the first gear ring (5) by gear A (4), gear C (6), and two-way power converges in point confluence mechanism
Exported afterwards from the second sun gear (30), then in turn through gear P (27), gear N (26), clutch KV2(10), gear D
(11), gear F (14), gear H (17) and gear G (15) outputs；
3rd section is III section of hydraulic machinery：In this mode, clutch KV3(18) engage, the power one inputted by axle A (33)
Road is delivered to hydraulic pump (2) by gear S (34), gear T (35), then is delivered to the first sun gear by hydraulic motor (8)
(7)；Separately riches all the way is delivered to the first gear ring (5) by gear A (4), gear C (6), and two-way power converges in point confluence mechanism
Exported afterwards from planet carrier (31), then in turn through gear Q (28), gear J (21), gear I (19), clutch KV3(18), tooth
Take turns H (17) and gear G (15) outputs.
3. a kind of loading machine three-stage Hydromechanical Stepless Transmission device as claimed in claim 1, it is characterised in that the nothing
Gear stage reverses gear including two hydro-mechanical segments：
Reverse gear I section of hydraulic machinery：In this mode, clutch KR1(20) engage, pass through all the way by axle A (33) power inputted
Gear S (34), gear T (35) are delivered to hydraulic pump (2), then are delivered to the first sun gear (7) by hydraulic motor (8)；It is another
Road hair is delivered to the first gear ring (5) by gear A (4), gear C (6), two-way power converge in point confluence mechanism after from second
Gear ring (32) is exported, then in turn through gear R (29), gear M (24), gear K (22), clutch KR1(20), gear E
(13), gear F (14), gear H (17) and gear G (15) outputs；
Reverse gear II section of hydraulic machinery：In this mode, clutch KR2(12) engage, passed through all the way by axle A (33) power inputted
Cross gear S (34), gear T (35) and be delivered to hydraulic pump (2), then the first sun gear (7) is delivered to by hydraulic motor (8)；Separately
Riches all the way is delivered to the first gear ring (5) by gear A (4), gear C (6), two-way power converge in point confluence mechanism after from the
Two sun gears (30) are exported, then in turn through gear P (27), gear N (26), gear L (23), clutch KR2(12), gear
E (13), gear F (14), gear H (17) and gear G (15) outputs.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710299592.5A CN107143636B (en) | 2017-05-02 | 2017-05-02 | Loading machine three-stage Hydromechanical Stepless Transmission device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710299592.5A CN107143636B (en) | 2017-05-02 | 2017-05-02 | Loading machine three-stage Hydromechanical Stepless Transmission device |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN107143636A true CN107143636A (en) | 2017-09-08 |
| CN107143636B CN107143636B (en) | 2019-04-19 |
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ID=59774007
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201710299592.5A Active CN107143636B (en) | 2017-05-02 | 2017-05-02 | Loading machine three-stage Hydromechanical Stepless Transmission device |
Country Status (1)
| Country | Link |
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| CN (1) | CN107143636B (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2019195993A1 (en) * | 2018-04-10 | 2019-10-17 | 北京理工大学 | Loader three-stage hydraulic mechanical stepless transmission device |
| CN113090731A (en) * | 2021-03-23 | 2021-07-09 | 北京理工大学 | Multi-power flow composite stepless transmission device |
| 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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| GB2498752A (en) * | 2012-01-26 | 2013-07-31 | Jc Bamford Excavators Ltd | Transmission with torque converter having a hollow shaft |
| WO2016102572A1 (en) * | 2014-12-23 | 2016-06-30 | Naf Neunkirchener Achsenfabrik Ag | Power split gearbox for a motor vehicle |
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| JP2001108062A (en) * | 1999-10-05 | 2001-04-20 | Komatsu Ltd | Hydraulic driving device for working machine |
| GB2498752A (en) * | 2012-01-26 | 2013-07-31 | Jc Bamford Excavators Ltd | Transmission with torque converter having a hollow shaft |
| CN102537269A (en) * | 2012-02-07 | 2012-07-04 | 北京理工大学 | Three-section hydraulic mechanical continuous stageless transmission device and method thereof |
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| WO2019195993A1 (en) * | 2018-04-10 | 2019-10-17 | 北京理工大学 | Loader three-stage hydraulic mechanical stepless transmission device |
| CN113090731A (en) * | 2021-03-23 | 2021-07-09 | 北京理工大学 | Multi-power flow composite stepless transmission device |
| 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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| Publication number | Publication date |
|---|---|
| CN107143636B (en) | 2019-04-19 |
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