CN107143636B - Loading machine three-stage Hydromechanical Stepless Transmission device - Google Patents
Loading machine three-stage Hydromechanical Stepless Transmission device Download PDFInfo
- Publication number
- CN107143636B CN107143636B CN201710299592.5A CN201710299592A CN107143636B CN 107143636 B CN107143636 B CN 107143636B CN 201710299592 A CN201710299592 A CN 201710299592A CN 107143636 B CN107143636 B CN 107143636B
- Authority
- CN
- China
- Prior art keywords
- gear
- hydraulic
- clutch
- section
- axis
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16H—GEARING
- F16H47/00—Combinations of mechanical gearing with fluid clutches or fluid gearing
- F16H47/02—Combinations of mechanical gearing with fluid clutches or fluid gearing the fluid gearing being of the volumetric type
- F16H47/04—Combinations of mechanical gearing with fluid clutches or fluid gearing the fluid gearing being of the volumetric type the mechanical gearing being of the type with members having orbital motion
-
- 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
Abstract
The invention discloses a kind of loading machine compound continuously variable transmittions of three-stage hydraulic machinery, include three hydro-mechanical segments, are started to walk using hydro-mechanical segment, can be improved low speed rotation efficiency.The transmission device specifically 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, III section of fixed axis gear transmission mechanism of hydraulic machinery, reverse gear mechanism and output par, c.The transmission device carries out the confluence of hydraulic power and mechanical output using planetary mechanism, is continuously connected by the hydro-mechanical segment of three sections of points of fast forms of squares remittance.Ith section is used to start to walk, and the IIth section is used for low speed working condition, and the IIIth section for walking at a high speed.Astern condition is two sections, respectively I section and II section of reverse gear hydraulic machinery of reverse gear hydraulic machinery.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 compound continuously variable transmittion of three-stage hydraulic machinery,
Belong to technical field of power transmission.
Background technique
Currently, engineering machinery loading machine generallys use hydraulic machine Powershift transmission, due to the needs of loading operation,
Acutely, hydraulic moment variator efficiency is lower, and leading to transmission system highest transmission efficiency is about 75% for speed and engine load variation.
Hydrostatic drive can facilitate realization stepless speed regulation, so that loading machine engine is often worked in economic speed section, can be improved
The efficiency of energy utilization of vehicle；But the efficiency of hydraulic pump motor enclosed speed control loop as used in Hydrostatic drive is relatively low, therefore
Compared with power shift hydraulic mechanical gear box, the Improvement of Hydrostatic drive is limited.
Hydrostatic-mechanical Transmission is by the compound of mechanical output and hydraulic power, it can be achieved that efficient stepless transmission, makes to start
Machine maintains stable load, is conducive to improve fuel economy, becomes one of developing direction of 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
Loading machine multi-range hydromechanical transmission, hydro-mechanical segment and a high-speed hydraulic machinery section comprising two continuous change,
Two continuous hydro-mechanical segments are respectively used to starting and low speed operation, and high-speed hydraulic machinery section is for transition of walking.Due to adopting
Two-way with hydraulic machinery power is compound, hydraulic pressure road transmitting portions power, therefore transmission efficiency becomes compared with hydraulic machine power shift
Fast case is greatly improved.But switch between continuous hydro-mechanical segment and high-speed hydraulic machinery section, the speed of Hydraulic Elements is not
Continuously, there are speed differences for clutch, can not achieve power shift.
ZF company US8328676 B2 discloses a kind of loader hydraulic mechanical driving device, hydraulic using 2 or 3
Robotic segments, the power dividing form converged square (Output split) using point speed and speed is divided to converge fast (Compound split), pass
Efficiency of movement is higher.Hydraulic Elements power needed for 2 hydro-mechanical segment transmission schemes is larger；3 hydro-mechanical segment transmission schemes,
Between IIth and the IIIth section switching still remain Hydraulic Elements speed it is discontinuous.
2014/0305113 A1 of Dana Rexroth company US discloses a kind of 2 segmentation hydromechanical transmissions, pure
Hydraulic section of starting and hydro-mechanical segment operation and walking.2 280 192 B1 of Dana Rexroth company EP discloses one kind 3
Segmentation hydromechanical transmission, pure hydraulic section of starting, two hydro-mechanical segments are respectively used to operation and walking, can get higher
Transmission efficiency.But two schemes are all made of hydraulic section of starting, and efficiency starts to walk low compared with hydro-mechanical segment.
Summary of the invention
In view of this, the present invention provides a kind of loading machine 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 high speed and walks；Reverse gear includes two
A hydro-mechanical segment.Three active section continuous changes, the speed consecutive variations of Hydraulic Elements, clutch switch without speed difference, manipulation
Simply, transmission efficiency is high.
The loading machine three-stage Hydromechanical Stepless Transmission device includes: importation, hydraulic speed regulation loop, divides
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: axis A, the gear A being fixed on axis A and gear S, axis B and the gear being fixed on axis B
T；The gear A is connected with a point confluence mechanism, the gear S and gear T engagement；Mechanical output from engine passes through axis
It is divided into two-way after A input: passes sequentially through gear S, gear T, axis B all the way and pass to hydraulic speed regulation loop；Another way passes 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 and hydraulic motor form closed hydraulic loop, and the slippage pump maintains the low pressure of closed hydraulic loop, and
Control oil pressure is provided for hydraulic pump；The hydraulic pump and axis B are connected；The hydraulic pump will be converted from the mechanical output of axis 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 of the first sun gear, double star wheel, planet carrier, the second sun gear
Star row 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 importation；Second gear ring and gear R are connected；Second sun gear and gear
P is connected；The planet carrier and gear Q are connected；
I section of fixed axis gear transmission mechanism of the 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 shell
The gear shaft for taking turns D is connected, and Partner is connected with the gear M；The gear D and gear F engagement, the gear F and output section
Split-phase connects；
II section of fixed axis gear transmission mechanism of the hydraulic machinery includes: gear N and clutch KV2；The gear N and described
Divide the gear P engagement in confluence mechanism；The clutch KV2Drive end and the gear shaft of gear D that is supported on shell it is solid
Even, Partner is connected with gear N；
III section of fixed axis gear transmission mechanism of the 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 shell
The gear shaft of gear H 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 engagement in I section of fixed axis gear transmission mechanism of press mechanical pressing；In the gear L and hydraulic II section of fixed axis gear transmission mechanism
Gear N engagement；The clutch KR1With clutch KR2Drive end it is solid with the gear shaft for the gear E being supported on shell
Even, clutch KR1Partner be connected with gear K, clutch KR2Partner be connected with gear L；The gear E and gear F
Engagement, gear F are connected with output par, c；
The output par, c includes: gear H, is meshed with gear H gear G, it is supported on shell and coaxial with gear G
Affixed output shaft；The gear F and the gear H are coaxially affixed.
The utility model has the advantages that
(1) present invention divides confluence mechanism, it can be achieved that three continuous hydro-mechanical segments using five bars, the Ith section for starting to walk,
IIth section is used for low speed operation, and the IIIth section for walking at a high speed；Hydro-mechanical segment starting, can be improved the transmission efficiency of low speed；Section
Between switching only need to manipulate 1 clutch, it can be achieved that smoothly switching.
(2) present invention uses hydraulic compound with mechanical power, and hydraulic pressure road transmitting portions power, most of power passes through
Mechanical road transmitting, realizes high transmission efficiency and variable speed, and operating efficiency can be improved and reduce the oil consumption of engine.It is whole stepless
Speed regulation, can make engine often work in economic speed, improve fuel economy, reduce the noise of engine.
(3) the zero-speed difference of clutch switches between achievable section, improves the service life of clutch friction plate, simplifies gear shift and patrol
Collect the design with steerable system.
(4) due to the presence of hydraulic speed regulation system, it can be achieved that power shift, first engages next section of clutch, unclamp again
The clutch of the preceding paragraph guarantees the not interrupt output of power, improves operating efficiency.
(5) except confluence mechanism is divided, other parts are driven using fixed axis gear, and it is defeated that loader drive mechanism on the one hand can be achieved
Enter and on the other hand the center drop that exports is away from can reduce technique and processing cost.
Detailed description of the invention
Fig. 1 is the transmission schematic diagram of the compound continuously variable transmittion of hydraulic machinery of the invention；
Fig. 2 is hydraulic pump of the invention, motor rotary speed figure；
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- shell, 2- hydraulic pump, 3- slippage pump, 4- gear A, the first gear ring of 5-, 6- gear C, first sun of 7-
Wheel, 8- hydraulic motor, 9- double star wheel, 10- clutch KV2, 11- gear D, 12- clutch KR2, 13- gear E, 14- gear F,
15- gear G, 16- output shaft, 17- gear H, 18- clutch KV3, 19- gear I, 20- clutch KR1, 21- gear J, 22- tooth
Take turns K, 23- gear L, 24- gear M, 25- clutch KV1, 26- gear N, 27- gear P, 28- gear Q, 29- gear R, 30-
Two sun gears, 31- planet carrier, the second gear ring of 32-, 33- power taking axis A, 34- gear S, 35- gear T, 36- power taking axis B.
Specific 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 compound continuously variable transmittions of three-stage hydraulic machinery, include three hydraulic presses
Tool section, is started to walk using hydro-mechanical segment, can be improved low speed rotation efficiency.Compared to loading machine hydraulic machine power gear shift speed change
Case, transmission device provided by the present embodiment can greatly improve the transmission efficiency of transmission device, and engine can be made often to work in
Economic speed section reduces oil consumption and the noise level of loading machine.
The transmission device carries out the confluence of hydraulic power and mechanical output using planetary mechanism, is converged by three sections of points of squares fast
The hydro-mechanical segment of (Input split) form is continuously connected.Ith section is used to start to walk, and the IIth section is used for low speed operation work
Condition, the IIIth section for walking at a high speed.Due to compound using hydraulic power and mechanical output, transmission efficiency is changed compared with hydraulic machine power
Shelves gearbox is high；It can guarantee the high transmission efficiency and low oil consumption during operation and transition.Astern condition is two sections, is respectively fallen
I section and II section of reverse gear hydraulic machinery of range hydromechanical.
As shown in Figure 1, the transmission device specifically includes: importation, hydraulic speed regulation loop, point confluence mechanism, hydraulic press
III section of I section of fixed axis gear transmission mechanism of tool, II section of fixed axis gear transmission mechanism of hydraulic machinery, hydraulic machinery fixed axis gear driver
Structure, reverse gear mechanism and output par, c.
Wherein importation includes: power taking axis A33, the gear A 4 being fixed on power taking axis A33 and gear S34, power taking axis
The B36 and gear T35 being fixed on power taking axis B36；Gear A 4 and the gear C 6 divided in confluence mechanism engage, gear S34 and tooth
Take turns T35 engagement.Power taking axis B36 and hydraulic pump 2 are connected；Mechanical output from engine passes through after power taking axis A33 input points
At two-way: passing sequentially through gear S34, gear T35, power taking axis B36 all the way and pass to hydraulic speed regulation loop；In addition successively lead to all the way
Cross gear A 4, gear C 6 passes 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
Motor 8 is fixed displacement motor；Hydraulic pump 2 and hydraulic motor 8 form closed hydraulic loop, and slippage pump 3 maintains closed hydraulic loop
Low pressure, and control oil pressure is provided for hydraulic pump 2.Hydraulic pump 2 and power taking axis B36 are connected, and hydraulic motor 8 and divide confluence mechanism
In the first sun gear 7 be connected.Pass through after hydraulic pump 2 is converted into hydraulic energy from the mechanical output of power taking axis B36 and passes through liquid
It pushes back road and passes to hydraulic motor 8, hydraulic energy transfer is that mechanical energy drives sun gear 7 by hydraulic motor 8, thus by this part function
Rate is passed back to mechanical circuit again.
Being divided to confluence mechanism is to arrange and add what two gear rings (the first gear ring 5, the second gear ring 32) formed by external toothing double star
Five-rod, the external toothing double star row includes by the first sun gear 7, double star wheel 9, planet carrier 31 and the second sun gear 30；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 the output of I section of hydraulic machinery, II section of hydraulic machinery, 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 importation engages；Second gear ring 32 and tooth
It takes turns R29 to be connected, the gear M24 engagement in I section of fixed axis gear transmission mechanism of gear R29 and hydraulic machinery；Second sun gear, 30 He
Gear P27 is connected, the gear N26 engagement in II section of fixed axis gear transmission mechanism of gear P27 and hydraulic machinery；Planet carrier 31 and tooth
It takes turns Q28 to be connected, III section of fixed axis gear gear wheel J21 of gear Q28 and hydraulic machinery is meshed.From importation and
The power of hydraulic speed regulation loop passes through gear C 6 and the input of the first sun gear 7 respectively, can lead to respectively after point confluence mechanism confluence
Gear R29, gear P27, gear Q28 output are crossed corresponding to hydraulic machinery I, II, III section of gear, specific gear stages are depending on liquid
Press mechanical pressing 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 KV125,11 and of gear D
Gear F14.Its middle gear M24 and gear R29 is engaged, and the gear K22 in the other side and reverse gear mechanism is meshed；Clutch
KV1The gear shaft of 25 drive end and the gear D 11 being supported on shell 1 is connected, and Partner is connected with gear M24, works as clutch
Device KV1When 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 KV1When 25 engagement, from dividing the power of confluence mechanism to pass through hydraulic machinery I
Section fixed axis gear transmission mechanism output, power flow direction are 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 engagement, gear
Gear L23 in the other side N26 and reverse gear mechanism is meshed；Clutch KV210 drive end and the gear being supported on shell 1
The gear shaft of D11 is connected, and Partner is connected with gear N26, as clutch KV1When 25 engagement, gear N26 can transmit power
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.As clutch KV210
When engagement, from the power of confluence mechanism is divided, by II section of fixed axis gear transmission mechanism output of hydraulic machinery, power flow direction is
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.The side its middle gear J21 and gear Q28 engagement, the other side and gear I19 are meshed；Clutch KV318 drive end with
The gear shaft for being supported on the gear H17 on shell 1 is connected, and Partner is connected with gear I19, as clutch KV3When 18 engagement, tooth
Power can be transferred to gear H17 by wheel I19.As clutch KV3When 18 engagement, the power from point confluence mechanism passes through liquid
III section of fixed axis gear transmission mechanism output of press mechanical pressing, power flow direction is gear Q28, gear J21, gear I19, gear H17.
Reverse gear mechanism includes: clutch KR120, clutch KR212, gear K22, gear L23, gear E13 and gear F14.
Gear M24 engagement in I section of fixed axis gear transmission mechanism of its middle gear K22 and hydraulic machinery；Gear L23 and II section of hydraulic machinery
Gear N26 engagement in fixed axis gear transmission mechanism；Clutch KR120 and clutch KR212 drive end be supported on shell
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 KR1When 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 engagement, gear F14 and output section
Gear H17 in point is connected.As clutch KR1When 20 engagement, from the power of I section of fixed axis gear transmission mechanism of hydraulic machinery
It is reversely exported by gear M24, gear K22, gear E13, gear F14, gear H17, is I section of gear of reverse gear hydraulic machinery.When
Clutch KR2When 12 engagement, the power 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, and are II section of gear of reverse gear hydraulic machinery.
Output par, c includes: gear H17, is meshed with gear H17 gear G15, it is supported on shell 1 and and gear
The coaxial affixed output shaft 16 of G15, engine power are output to loading machine by output par, c after hydromechanical transmission case
Front-rear axle.
There are two power taking mouths for the transmission device tool of the present embodiment, are PTO1 and PTO2, are separately connected axis A33 and axis B36.
The transmission principle that each section of the continuously variable transmittion are as follows:
First segment is I section of hydraulic machinery: power of the engine by axis A33 input passes through gear S34, gear T35 all the way
It is transmitted to hydraulic pump 2, then is transmitted to hydraulic motor 8, the first sun gear 7；Another way is transmitted to first by gear A 4, gear C 6
Gear ring 5, two-way power converge in point confluence mechanism.In this mode, clutch KV125 engagements, power after converging is from the
Two gear rings 32 output, then in turn through gear R29, gear M24, clutch KV125, gear D 11, gear F14, gear H17
It is exported with gear G15.
Second segment is II section of hydraulic machinery: power of the engine by axis A33 input passes through gear S34, gear T35 all the way
It is transmitted to hydraulic pump 2, then is transmitted to hydraulic motor 8, the first sun gear 7；Another way is transmitted to first by gear A 4, gear C 6
Gear ring 5, two-way power converge in point confluence mechanism.In this mode, clutch KV210 engagements, power after converging is from the
Two sun gears 30 output, then in turn through gear P27, gear N26, clutch KV210, gear D 11, gear F14, gear
H17 and gear G15 output.
Third section is III section of hydraulic machinery: power of the engine by axis A33 input passes through gear S34, gear T35 all the way
It is transmitted to hydraulic pump 2, then is transmitted to hydraulic motor 8, the first sun gear 7；Another way is transmitted to first by gear A 4, gear C 6
Gear ring 5, two-way power converge in point confluence mechanism.In this mode, clutch KV318 engagements, power after converging is from row
Carrier 31 exports, then in turn through gear Q28, gear J21, gear I19, clutch KV318, gear H17 and gear G15 are defeated
Out.
I section of reverse gear hydraulic machinery: power of the engine by axis A33 input passes through gear S34, gear T35 transmitting all the way
To hydraulic pump 2, then it is transmitted to hydraulic motor 8, the first sun gear 7；Another way is transmitted 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
32 output of circle, by gear R29, gear M24, gear K22, clutch KR120, gear E13, gear F14, gear H17 and tooth
Take turns G15 output.
II section of reverse gear hydraulic machinery: power of the engine by axis A33 input passes through gear S34, gear T35 transmitting all the way
To hydraulic pump 2, then it is transmitted to hydraulic motor 8, the first sun gear 7；Another way is transmitted 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
30 output of sun wheel, by gear P27, gear N26, gear L23, clutch KR212, gear E13, gear F14, gear H17 and
Gear G15 output.
It is of the invention that change section logic as shown in table 1.
1 three-stage hydraulic machinery of table changes a section logic
The present invention can be achieved power and change section, when being connected between section, can first engage next section of clutch, then separate the preceding paragraph
Clutch, that realizes power does not interrupt transmitting, guarantees not interrupting for power transmission, improves operating efficiency, and guarantees relaxing for gear shift
Adaptive.
In the present embodiment match 5 tons of loading machines, hydraulic pump, motor revolving speed 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 revolving speed of hydraulic motor constantly changes, to realize the nothing of output revolving speed
Grade is adjusted.The maximum pressure of hydraulic pump is with the laws about modified speed of speed as shown in figure 3, pressure is gradually dropped with the increase of hydro-mechanical segment
It is low.The maximum output torque of the present embodiment with speed laws about modified speed as shown in figure 4, efficiency curve as shown in figure 5, solid line be it is pure
I section of hydraulic machinery, II section of hydraulic machinery and III section of hydraulic machinery of efficiency curve, dotted line are hydraulic machine Powershift transmission
Efficiency curve.It follows that the transmission efficiency of the transmission device in the present embodiment is apparently higher than the change of hydraulic machine power shift
Fast case.
In conclusion the above is merely preferred embodiments of the present invention, being not intended to limit the scope of the present invention.
All within the spirits and principles of the present invention, any modification, equivalent replacement, improvement and so on should be included in of the invention
Within protection scope.
Claims (3)
1. a kind of loading machine three-stage Hydromechanical Stepless Transmission device characterized by comprising importation, hydraulic tune
Confluence mechanism, I section of fixed axis gear transmission mechanism of hydraulic machinery, hydraulic machinery II section of fixed axis gear transmission mechanism, liquid are divided in fast circuit
III section of fixed axis gear transmission mechanism of press mechanical pressing, reverse gear mechanism and output par, c；
The importation includes: axis A (33), the gear A (4) being fixed on axis A (33) and gear S (34), axis B (36) and solid
Meet the gear T (35) on axis B (36)；The gear A (4) is connected with a point confluence mechanism, the gear S (34) and gear T
(35) it engages；Mechanical output from engine is by being divided into two-way after axis A (33) input: passing sequentially through gear S all the way
(34), gear T (35), axis B (36) pass to hydraulic speed regulation loop；Another way passes sequentially through gear A (4) and passes to a point confluence machine
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) and hydraulic motor (8) form closed hydraulic loop, and the slippage pump (3) maintains Closed Hydraulic to return
The low pressure on road, and control oil pressure is provided for hydraulic pump (2)；The hydraulic pump (2) and axis B (36) are connected；The hydraulic pump
(2) hydraulic motor (8) are passed to by hydraulic circuit after hydraulic energy being converted into from the mechanical output of axis B (36)；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 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 importation；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) are taken turns to be connected；
I section of fixed axis gear transmission mechanism of the hydraulic machinery includes: gear M (24), clutch KV1(25), gear D (11) and tooth
It takes 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
Moved end and the gear shaft for the gear D (11) being supported on shell (1) are connected, and Partner is connected with the gear M (24)；The tooth
D (11) and gear F (14) engagement are taken turns, the gear F (14) is connected with output par, c；
II section of fixed axis gear transmission mechanism of the hydraulic machinery includes: gear N (26) and clutch KV2(10)；The gear N
(26) it is engaged with the gear P (27) divided in confluence mechanism；The clutch KV2(10) drive end and it is supported on shell
(1) gear shaft of the gear D (11) on is connected, and Partner is connected with gear N (26)；
III section of fixed axis gear transmission mechanism of the 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)
The gear shaft of drive end and the gear H (17) being supported on shell (1) is 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) engagement in I section of fixed axis gear transmission mechanism of the gear K (22) and hydraulic machinery；The gear L
(23) gear N (26) engagement and in II section of fixed axis gear transmission mechanism of hydraulic machinery；The clutch KR1(20) and clutch
KR2(12) drive end is connected with the gear shaft for the gear E (13) being supported on shell (1), 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) it engages, gear F (14) is connected with output par, c；
The output par, c includes: gear H (17), is meshed with gear H (17) gear G (15), be supported on shell (1) and
With the coaxial affixed output shaft (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 described in claim 1, which is characterized in that the nothing
Gear stage includes three hydro-mechanical segments:
First segment is I section of hydraulic machinery: in this mode, the clutch KV1(25) it engages；The power inputted by axis A (33)
Hydraulic pump (2) are transmitted to by gear S (34), gear T (35) all the way, are transmitted to the first sun gear using hydraulic motor (8)
(7)；Another way is transmitted to the first gear ring (5) by gear A (4), gear C (6), after two-way power converges in point confluence mechanism
It is exported from the second gear ring (32), 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) output；
Second segment is II section of hydraulic machinery: in this mode, clutch KV2(10) it engages, the power one inputted by axis A (33)
Road is transmitted to hydraulic pump (2) by gear S (34), gear T (35), is transmitted to the first sun gear using hydraulic motor (8)
(7)；Another way is transmitted to the first gear ring (5) by gear A (4), gear C (6), after two-way power converges in point confluence mechanism
It is exported 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) output；
Third section is III section of hydraulic machinery: in this mode, clutch KV3(18) it engages, the power one inputted by axis A (33)
Road is transmitted to hydraulic pump (2) by gear S (34), gear T (35), is transmitted to the first sun gear using hydraulic motor (8)
(7)；Another way is transmitted to the first gear ring (5) by gear A (4), gear C (6), after two-way power converges in point confluence mechanism
It is exported from planet carrier (31), then in turn through gear Q (28), gear J (21), gear I (19), clutch KV3(18), gear
H (17) and gear G (15) output.
3. a kind of loading machine three-stage Hydromechanical Stepless Transmission device as described in claim 1, which is characterized in that the nothing
The reverse gear of gear stage includes two hydro-mechanical segments:
I section of reverse gear hydraulic machinery: in this mode, clutch KR1(20) it engages, passes through all the way by the power that axis A (33) input
Gear S (34), gear T (35) are transmitted to hydraulic pump (2), are transmitted to the first sun gear (7) using hydraulic motor (8)；It is another
Road is transmitted to the first gear ring (5) by gear A (4), gear C (6), two-way power converge in point confluence mechanism after from the second tooth
(32) output is enclosed, 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) output；
II section of reverse gear hydraulic machinery: in this mode, clutch KR2(12) it engages, is passed through all the way by the power that axis A (33) input
Cross gear S (34), gear T (35) is transmitted to hydraulic pump (2), be transmitted to the first sun gear (7) using hydraulic motor (8)；Separately
Be transmitted to the first gear ring (5) by gear A (4), gear C (6) all the way, two-way power converge in point confluence mechanism after from second
Sun gear (30) output, 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) output.
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 CN107143636A (en) | 2017-09-08 |
| CN107143636B true CN107143636B (en) | 2019-04-19 |
Family
ID=59774007
Family Applications (1)
| 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 |
|---|---|
| CN (1) | CN107143636B (en) |
Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP3584467B1 (en) * | 2018-04-10 | 2021-11-17 | Beijing Institute Of Technology | 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 |
| 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 |
Family Cites Families (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| 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 |
| CN102537269B (en) * | 2012-02-07 | 2013-04-17 | 北京理工大学 | Three-section hydraulic mechanical continuous stageless transmission device |
| CN102943859B (en) * | 2012-11-23 | 2015-07-08 | 天津工程机械研究院 | Hydraulic mechanical continuously variable transmission for loader |
| EP3037692B1 (en) * | 2014-12-23 | 2018-02-07 | NAF Neunkirchener Achsenfabrik AG | Power split drive for a motor vehicle |
| CN106369136B (en) * | 2016-12-07 | 2018-11-16 | 重庆大学 | The compound continuously variable transmission device of two-part hydraulic machinery |
-
2017
- 2017-05-02 CN CN201710299592.5A patent/CN107143636B/en active Active
Also Published As
| Publication number | Publication date |
|---|---|
| CN107143636A (en) | 2017-09-08 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN107143638B (en) | The compound continuously variable transmittion of hydraulic machinery | |
| CN107143636B (en) | Loading machine three-stage Hydromechanical Stepless Transmission device | |
| CA2363653A1 (en) | Hydro-mechanical continuously variable transmission | |
| CN1793702B (en) | Variable-speed device | |
| CN108533701B (en) | Multi-section multi-clutch type hydraulic mechanical continuously variable transmission with double planet rows | |
| US4976665A (en) | Vehicle drive device with a hydrostatic-mechanical power splitting transmission | |
| CN106989155B (en) | A kind of compound continuously variable transmittion of loading machine hydraulic machinery | |
| CN104329433A (en) | Double-flow transmission gearbox for hydraulic machine of tractor | |
| CN108397534B (en) | Three-section type hydraulic mechanical stepless transmission device of loader | |
| CN108278348B (en) | Three-section type mechanical composite stepless transmission device for engineering machinery | |
| CN107191567B (en) | The mechanical compound continuously variable transmittion of loader hydraulic | |
| CN107246467B (en) | Stepless transmission device for hydraulic machinery of loader | |
| CN107143637B (en) | A kind of loading machine Hydromechanical Stepless Transmission device | |
| CN107152510B (en) | Loader hydraulic mechanical stepless transmission device | |
| CN104500684A (en) | Ten-gear hydrodynamic transmission for vehicle | |
| CN109578544B (en) | Single-planet-row multi-mode hydraulic mechanical stepless speed changer | |
| EP3584467B1 (en) | Loader three-stage hydraulic mechanical stepless transmission device | |
| CN104329434A (en) | Hydraulic mechanical dual-power flow transmission gearbox | |
| US20060162329A1 (en) | Hydrostatic multi-motor drive | |
| CN109268454A (en) | A kind of worm-gear type two keeps off speed change gear and its method for changing speed | |
| CN109519513B (en) | Engineering machine and hydraulic mechanical composite gearbox thereof | |
| EP3779238B1 (en) | A hydro-mechanical continuously variable transmission apparatus with three ranges for construction machinery | |
| CN108006188A (en) | A kind of dual-speed hydraulic hybrid electric drive system | |
| KR101832852B1 (en) | Control method of continuously variable transmission | |
| CN208503397U (en) | A kind of infinitely variable speed transmission |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant |