CN107246467A - Loader hydraulic mechanical stepless transmission device - Google Patents
Loader hydraulic mechanical stepless transmission device Download PDFInfo
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- CN107246467A CN107246467A CN201710299575.1A CN201710299575A CN107246467A CN 107246467 A CN107246467 A CN 107246467A CN 201710299575 A CN201710299575 A CN 201710299575A CN 107246467 A CN107246467 A CN 107246467A
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- Prior art keywords
- gear
- hydraulic
- planet
- clutch
- power
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Classifications
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16H—GEARING
- F16H47/00—Combinations of mechanical gearing with fluid clutches or fluid gearing
- F16H47/02—Combinations of mechanical gearing with fluid clutches or fluid gearing the fluid gearing being of the volumetric type
- F16H47/04—Combinations of mechanical gearing with fluid clutches or fluid gearing the fluid gearing being of the volumetric type the mechanical gearing being of the type with members having orbital motion
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16H—GEARING
- F16H47/00—Combinations of mechanical gearing with fluid clutches or fluid gearing
- F16H47/02—Combinations of mechanical gearing with fluid clutches or fluid gearing the fluid gearing being of the volumetric type
- F16H47/04—Combinations of mechanical gearing with fluid clutches or fluid gearing the fluid gearing being of the volumetric type the mechanical gearing being of the type with members having orbital motion
- F16H2047/045—Combinations of mechanical gearing with fluid clutches or fluid gearing the fluid gearing being of the volumetric type the mechanical gearing being of the type with members having orbital motion the fluid gearing comprising a plurality of pumps or motors
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 reverse gear mechanism.The transmission device carries out confluxing for hydraulic power and mechanical output using planetary mechanism, and converging the hydro-mechanical segment linkings of fast power dividing forms by three point squares forms, and 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 US8328676B2 discloses 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, adopts Gear Planet Transmission and divides the machine that confluxes
Structure realizes three hydro-mechanical segments, is respectively used to starting, low speed operation and walks at a high speed;Hydro-mechanical segment starts to walk, and can improve low
The transmission efficiency of speed;Intersegmental switching only need to manipulate 1 clutch, can be achieved to take over seamlessly.
The loader hydraulic mechanical stepless transmission device includes:Hydraulic speed regulation loop, planet point confluence mechanism, hydraulic machinery
I section of fixed axis gear transmission mechanism, II section of fixed axis gear transmission mechanism of hydraulic machinery, III section of fixed axis gear transmission mechanism of hydraulic machinery
And reverse gear mechanism;
The hydraulic speed regulation loop includes:The closed hydraulic loop being made up of hydraulic pump and hydraulic motor;The hydraulic pump
It is connected with the axle for being connected with gear R;The gear R is engaged with the gear S being fixed on input shaft;The power of engine is from described
After input shaft input, a part enters closed hydraulic loop by the hydraulic pump and mechanical energy is converted into hydraulic energy, after pass through
The gear D being connected on the hydraulic motor power output shaft enters point confluence mechanism progress power and converged;
The planet point confluence mechanism includes three planet rows, gear A, gear B, gear C, gear P and gear Q;Institute
State gear C, the first planet toothrow circle and third planet seniority among brothers and sisters carrier it is coaxially affixed, the gear C is engaged with the gear S;The
One planet rows of planetary frame, third planet toothrow circle, the second planet row planet carrier and gear A are connected;Third planet row sun gear,
Second planet row sun gear and the gear P are connected;It is solid with the gear D meshed gears B and the first planet row sun gear
Even;Second planet row gear ring and the gear Q are connected;
Described I section of fixed axis gear transmission mechanism of hydraulic machinery includes:Engaged with the gear Q in the planet point confluence mechanism
Gear M, pass through clutch KV1The E and gear E meshed gears H being connected with the gear M;
Described II section of fixed axis gear transmission mechanism of hydraulic machinery includes:Nibbled with the gear P in the planet point confluence mechanism
The gear N of conjunction, pass through clutch KV2The E and gear E meshed gears H being connected with the gear N;
Described III section of fixed axis gear transmission mechanism of hydraulic machinery includes:Nibbled with the gear A in the planet point confluence mechanism
The gear G of conjunction, with the gear G meshed gears I, pass through clutch KV3The gear H being connected with the gear I;
The gear H is engaged with being connected in output shaft gear J;
The reverse gear mechanism includes:With the gear M meshed gears K, with the gear N meshed gears L, with it is described
Gear H meshed gears F;The gear K passes through reverse clutch KR1It is connected with the gear F, the gear L passes through reverse gear
Clutch KR2It is connected with the gear F.
Also include in the hydraulic speed regulation loop:Slippage pump, the slippage pump maintains the low pressure of the closed hydraulic loop
Pressure, and provide control oil pressure for the hydraulic pump.
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 KV1Engagement;From the gear enter the mechanical output of planet point confluence mechanism with
It is defeated from the gear Q after the hydraulic power for entering planet point confluence mechanism from the gear B converges in planet point confluence mechanism
Go out, then pass sequentially through the gear M, clutch KV1, gear E, gear H, gear J be transferred to output shaft;
During for low speed operation, the clutch KV2Engagement;Enter the mechanical work of planet point confluence mechanism from the gear
After rate and the hydraulic power for entering planet point confluence mechanism from the gear B converge in planet point confluence mechanism, from the tooth
P outputs are taken turns, gear N, clutch KV is then passed sequentially through2, gear E, gear H, gear J be transferred to output shaft;
During for walking at a high speed, the clutch KV3Engagement;Enter the mechanical work of planet point confluence mechanism from the gear
After rate and the hydraulic power for entering planet point confluence mechanism from the gear B converge in planet point confluence mechanism, from the tooth
A outputs are taken turns, gear G, gear I, clutch KV is then passed sequentially through3, gear H, gear J be transferred to output shaft.
The continuously variable transmittion has two hydro-mechanical segments of reversing gear:
As the reverse clutch KR1During engagement, the continuously variable transmittion is in I section of the hydraulic machinery that reverses gear;Come from row
The power of star point confluence mechanism inputs reverse gear mechanism by the gear M, then passes sequentially through gear K, reverse clutch KR1、
Gear F, gear H, gear J are transferred to output shaft;
As the reverse clutch KR2During engagement, the continuously variable transmittion is in II section of reverse gear hydraulic machinery:Come from row
The power of star point confluence mechanism inputs reverse gear mechanism by the gear N, then passes sequentially through gear L, reverse clutch KR2、
Gear F, gear H, gear J are transferred to output shaft.
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, is transmitted all the way by the first planet row sun gear
To the hydraulic pump, then by the hydraulic motor, be delivered to gear K, after pass through the tooth that is connected with the second planet row gear ring
Wheel N is passed back to a point confluence mechanism;Complete to conflux with being directly entered in the power of planet point confluence mechanism in planet point confluence mechanism
Afterwards, exported by the gear C being connected with the first planet row sun gear from planet point confluence mechanism, then pass sequentially through gear F,
Clutch K1, gear S, gear I, clutch KL be 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;In planet point confluence mechanism using with I section of the hydraulic machinery that reverses gear it is same by the way of complete to conflux after, by with
The connected gear of two planet row planet carriers is exported from planet point confluence mechanism;Then in turn through gear J, clutch K2, tooth
Wheel G, gear L, gear S, gear I, clutch KL are transferred to output shaft.
Beneficial effect:
(1) it is combined using the power of hydraulic pressure and machinery, 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.
(2) using planet point confluence mechanism, using point fast power dividing form of square remittance, the hydraulic machinery of three can be achieved
Section, I section of hydro-mechanical segment is used to start to walk, and II section of hydro-mechanical segment is used for low speed operation, and III section of hydro-mechanical segment is used to go at a high speed
Walk;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 smoothly to cut
Change.
(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 each hydro-mechanical segment, be suitable for working condition, improve
In the life-span of clutch friction plate, simplify the design of shift logic and steerable system.Between hydro-mechanical segment, because hydraulic pressure is adjusted
The presence of speed system, can be achieved power shifting, first engages next section of clutch, then unclamp the clutch of the preceding paragraph, it is ensured that dynamic
The not interrupt output of power, it is ensured that 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 the transmission sketch that the hydraulic machinery is combined continuously variable transmittion;
Wherein:1- housings, 2- hydraulic pumps, 3- slippage pumps, 4- gears S, 5- input shaft, 6- gear As, 7- gear Bs, 8- gears
The planet row sun gear of C, 9- first, 10- the first planet rows of planetary frame, 11- hydraulic motors, 12- the first planet toothrows circle, 13- teeth
Take turns D, 14- gear E, 15- gear F, 16- gear G, 17- gear H, 18- clutch KV3, 19- gear I, 20- gears J, 21- it is defeated
Shaft, 22- gear K, 23- gear L, 24- reverse clutches KR2, 25- reverse clutches KR1, 26- gear M, 27- gears N, 28-
Clutch KV2, 29- clutches KV1, the second planet rows of 30- gear ring, the second planet rows of 31- planet carrier, 32- the second planet row sun
Wheel, 34- gear P, 35- gear Q, 37- axle A, 38- third planet row sun gear, 39- third planets seniority among brothers and sisters carrier, 40- the third lines
Star toothrow circle, 41- gear R, 42- 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 using hydro-mechanical segment, improves the transmission efficiency of speed operation.Utilize hydraulic speed regulation loop and the work(of mechanical circuit
Rate is combined, and the power of hydraulic pressure road transmitting portions realizes high transmission efficiency and stepless speed regulation.Compared to loading machine hydraulic machine
Dynamic power shift gear box, the present invention can greatly improve the transmission efficiency of transmission device, and engine can be made often to work in economic turn
It is fast interval, reduce oil consumption and the noise level of loading machine.
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 reverse gear mechanism.
Be connected gear S4 on input shaft 5, and the other end of input shaft 5 is power taking mouthful PTO2.Gear S4 and it is connected in axle
37 gear R41 are meshed;One end of axle 37 and hydraulic pump 2 are connected, and the other end is power taking mouthful PTO1, and this section can be by engine
Power is delivered to hydraulic speed regulation loop.Gear S4 is also engaged with the gear C 8 in planet point confluence mechanism simultaneously, by engine
Power is delivered to planet point confluence mechanism.
Hydraulic speed regulation loop includes:Hydraulic pump 2, hydraulic motor 11 and slippage pump 3;Wherein hydraulic pump 2 is two-way variable displacement pump,
Hydraulic motor 11 is fixed displacement motor, hydraulic pump 2 and the composition closed hydraulic loop of hydraulic motor 11, is commonly connected to hydraulic pump 2
Slippage pump 3-dimensional on axle 37 holds the low pressure of closed circuit, and provides control oil pressure for volume adjustable hydraulic pump 2.Come from and start
A power part for machine enters hydraulic circuit by hydraulic pump 2 and slippage pump 3 and mechanical energy is converted into hydraulic energy, after pass through connection
Gear D 13 on the power output shaft of hydraulic motor 11 enters point confluence mechanism progress power and converged.
Planet point confluence mechanism is made up of three planet rows, wherein gear C 8, the first planet toothrow circle 12 and third planet
Seniority among brothers and sisters carrier 39 is coaxially fixed on axle B42, and gear C 8 is engaged with gear S4;First planet rows of planetary frame 10, third planet row
The gear A 6 of gear ring 40, the second planet row planet carrier 31 and empty set on axle B42 is connected;The third line of empty set on axle B42
Star row sun gear 38, the second planet row sun gear 32 and gear P34 are connected;Gear B 7 and empty set of the empty set on axle B42 exist
The first planet row sun gear 9 on axle B42 is connected, and gear B 7 is engaged with gear D 13;Second planet row gear ring 30 and empty set are in axle
Gear Q35 on B42 is connected.The mechanical output for coming from engine inputs planet point confluence mechanism from gear 8, comes from hydraulic pressure
The hydraulic power in loop engages input planet point confluence mechanism with gear B 7 by gear D 13, and two parts power is dividing the machine that confluxes
Coupled in structure.Its middle gear Q35 is I section of output of hydraulic machinery, and gear P34 is II section of output of hydraulic machinery, and gear A 6 is hydraulic pressure
III section of output of machinery.
I section of fixed axis gear transmission mechanism of hydraulic machinery includes:Gear M26, clutch KV129th, gear E14, gear H17,
With gear J20.Its middle gear M26 and planet point confluence mechanism gear Q35 engagements, and gear M26 and clutch KV129 master
Moved end is connected, clutch KV129 Partner is connected with gear E14, gear E14 and gear H17 engagements, gear H17 and gear
J20 is engaged, and gear J20 is connected on output shaft 21.As clutch KV1During 29 engagement, come from the work(of planet point confluence mechanism
Then rate passes sequentially through gear M26, clutch KV from the mechanical I section of fixed axis gear transmission mechanism of gear M26 input hydraulic pressures129th, tooth
Wheel E14, gear H17, gear J20 are transferred to output shaft 21, are exported from output shaft 21.
II section of fixed axis gear transmission mechanism of hydraulic machinery includes:Gear N27, clutch KV228th, gear E14, gear H17,
With gear J20.Gear P34 engagements in its middle gear N27 and planet point confluence mechanism, and gear N27 and clutch KV228
Drive end is connected, clutch KV228 Partner is connected with gear E14, gear E14 and gear H17 engagements, gear H17 and tooth
J20 engagements are taken turns, gear J20 is connected on output shaft 21.As clutch KV2During 28 engagement, come from planet point confluence mechanism
Then power pass sequentially through gear N27, clutch from the mechanical II section of fixed axis gear transmission mechanism of gear N27 input hydraulic pressures
KV228th, gear E14, gear H17, gear J20 are transferred to output shaft 21, are exported from output shaft 21.
III section of fixed axis gear transmission mechanism of hydraulic machinery includes:By gear G16, gear I19, clutch KV318th, gear
H17, gear J20.The gear A 6 of its middle gear G16 and planet point confluence mechanism is engaged, while engaged with gear I19, and gear
I19 and clutch KV318 Partner is connected, clutch KV318 drive end is fixedly connected with gear H17, gear H17 and gear
J20 is engaged, and gear J20 is connected on output shaft 21.As clutch KV3During 18 engagement, come from the work(of planet point confluence mechanism
Then rate passes sequentially through gear G16, gear I19, clutch from the mechanical III section of fixed axis gear transmission mechanism of gear G16 input hydraulic pressures
Device KV318th, gear H17, gear J20 are transferred to output shaft 21, are exported from output shaft 21.
Reverse gear mechanism includes:Gear K22, reverse clutch KR125th, gear L23, reverse clutch KR224 and gear F15.
The coaxial empty sets of its middle gear K22 and gear L23 are on gear F15 gear shaft, gear K22 and I section of dead axle tooth of hydraulic machinery
Gear N27 in gear M26 engagements in wheel drive mechanism, II section of fixed axis gear transmission mechanism of gear L23 and hydraulic machinery is nibbled
Close, gear F15 is engaged with gear H17.Reverse clutch KR125 drive end is connected with gear K22, Partner and gear F15
Gear shaft it is affixed;Reverse clutch KR224 drive end is connected with gear L23, and the gear shaft of Partner and gear F15 is consolidated
Connect.
Engine power is inputted from input shaft 5, 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 KV129 engagements, remaining clutch disconnects;Come from
In planet point confluence mechanism power from the mechanical I section of fixed axis gear transmission mechanism of gear M26 input hydraulic pressures, then pass sequentially through tooth
Take turns M26, clutch KV129th, gear E14, gear H17, gear J20 are transferred to output shaft 21, are exported from output shaft 21.
Second segment is II section of hydraulic machinery:Under the operating mode, clutch KV228 engagements, remaining clutch disconnects;Come from
In planet point confluence mechanism power from the mechanical II section of fixed axis gear transmission mechanism of gear N27 input hydraulic pressures, then pass sequentially through
Gear N27, clutch KV228th, gear E14, gear H17, gear J20 are transferred to output shaft 21, are exported from output shaft 21.
3rd section is III section of hydraulic machinery:Under the operating mode, clutch KV318 engagements, remaining clutch disconnects;Come from
In planet point confluence mechanism power from the mechanical III section of fixed axis gear transmission mechanism of gear G16 input hydraulic pressures, then pass sequentially through
Gear G16, gear I19, clutch KV318th, gear H17, gear J20 are transferred to output shaft 21, are exported from output shaft 21.
I section of reverse gear hydraulic machinery:Under the operating mode, reverse clutch KR125 engagements, remaining clutch disconnects;Come from
Reverse gear mechanism inputted by gear M26 in the power of planet point confluence mechanism, pass sequentially through gear M26, gear K22, reverse gear from
Clutch KR125th, gear F15, gear H17, gear J20 are transferred to output shaft 21, are exported from output shaft 21.
II section of reverse gear hydraulic machinery:Under the operating mode, reverse clutch KR224 engagements, remaining clutch disconnects;Come from
Reverse gear mechanism inputted by gear N27 in the power of planet point confluence mechanism, pass sequentially through gear N27, gear L23, reverse gear from
Clutch KR224th, gear F15, gear H17, gear J20 are transferred to output shaft 21, are exported from output shaft 21.
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 A37 and input shaft
5。
The transmission device carries out confluxing for hydraulic power and mechanical output using planetary mechanism, and speed power are converged by three point squares
The hydro-mechanical segment linking of shunting form is formed.I section of hydraulic machinery is used to start to walk, and II section of hydraulic machinery is used for low speed operation work
Condition, III section of hydraulic machinery is used to walk at a high speed.Due to being combined using hydraulic power and mechanical output, transmission efficiency is compared with hydraulic machine
Dynamic power shift gear box is high;The high transmission efficiency during operation and transition and low oil consumption can be ensured.Astern condition is two sections, is fallen
II section of I section of range hydromechanical and reverse gear hydraulic machinery.
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 (5)
1. loader hydraulic mechanical stepless transmission device, it is characterised in that including:Hydraulic speed regulation loop, planet 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 of hydraulic machinery
Transmission mechanism and reverse gear mechanism;
The hydraulic speed regulation loop includes:The closed hydraulic loop being made up of hydraulic pump (2) and hydraulic motor (11);The hydraulic pressure
Pump (2) is connected with being connected with the axle (37) of gear R (41);The gear R (41) and the gear S (4) being fixed on input shaft (5)
Engagement;The power of engine is after the input shaft (5) input, and a part enters Closed Hydraulic by the hydraulic pump (2) and returned
Mechanical energy is converted into hydraulic energy by road, after entered by the gear D (13) being connected on the hydraulic motor (11) power output shaft
Enter point confluence mechanism progress power to converge;
The planet point confluence mechanism include three planet rows, gear A (6), gear B (7), gear C (8), gear P (34) and
Gear Q (35);The gear C (8), the first planet toothrow circle (12) and third planet seniority among brothers and sisters carrier (39) are coaxial affixed, described
Gear C (8) is engaged with the gear S (4);First planet rows of planetary frame (10), third planet toothrow circle (40), the second planet row
Planet carrier (31) and gear A (6) are connected;Third planet row's sun gear (38), the second planet row sun gear (32) and described
Gear P (34) is connected;It is connected with the gear D (13) meshed gears B (7) and the first planet row sun gear (9);Second planet
Toothrow circle (30) and the gear Q (35) are connected;
Described I section of fixed axis gear transmission mechanism of hydraulic machinery includes:Engaged with the gear Q (35) in the planet point confluence mechanism
Gear M (26), pass through clutch KV1(29) E (14) and gear E (14) meshed gears being connected with the gear M (26)
H(17);
Described II section of fixed axis gear transmission mechanism of hydraulic machinery includes:Nibbled with the gear P (34) in the planet point confluence mechanism
The gear N (27) of conjunction, pass through clutch KV2(28) E (14) being connected with the gear N (27), the tooth engaged with gear E (14)
Take turns H (17);
Described III section of fixed axis gear transmission mechanism of hydraulic machinery includes:Engaged with the gear A (6) in the planet point confluence mechanism
Gear G (16), with gear G (16) the meshed gears I (19), pass through clutch KV3(18) with gear I (19) phase
Gear H (17) even;
The gear H (17) is engaged with being connected in output shaft (21) gear J (20);
The reverse gear mechanism includes:With gear M (26) the meshed gears K (22) and gear N (27) meshed gears
L (23) and gear H (17) the meshed gears F (15);The gear K (22) passes through reverse clutch KR1(25) with it is described
Gear F (15) is connected, and the gear L (23) passes through reverse clutch KR2(24) it is connected with the gear F (15).
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 (3), the slippage pump (3) maintains the low pressure of the closed hydraulic loop, and is the hydraulic pump
(2) control oil pressure is provided.
3. loader hydraulic mechanical stepless transmission device as claimed in claim 1 or 2, it is characterised in that the stepless transmission dress
The forward gear put 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 KV1(29) engage;Enter the mechanical output of planet point confluence mechanism from the gear (8)
After converging from the gear B (7) into the hydraulic power of planet point confluence mechanism in planet point confluence mechanism, from the tooth
Q (35) outputs are taken turns, the gear M (26), clutch KV is then passed sequentially through1(29), gear E (14), gear H (17), gear J
(20) it is transferred to output shaft (21);
During for low speed operation, the clutch KV2(28) engage;Enter the machinery of planet point confluence mechanism from the gear (8)
After power and the hydraulic power for entering planet point confluence mechanism from the gear B (7) converge in planet point confluence mechanism, from institute
Gear P (34) outputs are stated, gear N (27), clutch KV is then passed sequentially through2(28), gear E (14), gear H (17), gear J
(20) it is transferred to output shaft (21);
During for walking at a high speed, the clutch KV3(18) engage;Enter the machinery of planet point confluence mechanism from the gear (8)
After power and the hydraulic power for entering planet point confluence mechanism from the gear B (7) converge in planet point confluence mechanism, from institute
Gear A (6) output is stated, gear G (16), gear I (19), clutch KV is then passed sequentially through3(18), gear H (17), gear J
(20) it is transferred to output shaft (21).
4. loader hydraulic mechanical stepless transmission device as claimed in claim 1 or 2, it is characterised in that the stepless transmission dress
Put with two hydro-mechanical segments of reversing gear:
As the reverse clutch KR1(25) when engaging, the continuously variable transmittion is in I section of the hydraulic machinery that reverses gear;Come from planet
Divide the power of confluence mechanism to input reverse gear mechanism by the gear M (26), then pass sequentially through gear K (22), reverse gear clutch
Device KR1(25), gear F (15), gear H (17), gear J (20) are transferred to output shaft (21);
As the reverse clutch KR2(24) when engaging, the continuously variable transmittion is in II section of reverse gear hydraulic machinery:Come from row
The power of star point confluence mechanism inputs reverse gear mechanism by the gear N (27), then pass sequentially through gear L (23), reverse gear from
Clutch KR2(24), gear F (15), gear H (17), gear J (20) are transferred to output shaft (21).
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 delivered to the hydraulic pump (8) by the first planet row sun gear (9) all the way, then by the hydraulic motor (10), passes
Be delivered to gear K (27), after a point confluence mechanism is passed back to by the gear N (29) being connected with the second planet row gear ring (32);It is expert at
Star point confluence mechanism and be directly entered in the power of planet point confluence mechanism after completion confluxes, by with the first planet row sun gear
(9) connected gear C (7) is exported from planet point confluence mechanism, then passes sequentially through gear F (16), clutch K1(14), tooth
Wheel S (26), gear I (20), clutch KL (21) are 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;Used and the hydraulic press that reverses gear in planet point confluence mechanism
I section of same mode of tool is completed after confluxing, and is converged by the gear (28) being connected with the second planet row planet carrier (31) from planet point
Flow in mechanism and export;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).
5. loader hydraulic mechanical stepless transmission device as claimed in claim 1 or 2, it is characterised in that the axle A (37) and
Input shaft (5) is provided with power taking mouthful.
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Cited By (3)
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WO2019195992A1 (en) * | 2018-04-10 | 2019-10-17 | 北京理工大学 | Three-section mechanical composite stepless transmission apparatus for use in engineering machinery |
CN110397732A (en) * | 2019-08-02 | 2019-11-01 | 合肥工业大学 | A kind of dynamic property speed change optimal control method considering HMT transmission efficiency |
CN113090731A (en) * | 2021-03-23 | 2021-07-09 | 北京理工大学 | Multi-power flow composite stepless transmission device |
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CN103453104A (en) * | 2013-07-22 | 2013-12-18 | 北京理工大学 | Four-segment hydraulic mechanical composite transmission device |
RU2013124307A (en) * | 2013-05-28 | 2014-12-10 | Евгений Владимирович Габай | TRANSMISSION WITH HYDRAULIC INTER-axle and inter-wheel DIFFERENTIAL RELATIONS AND AUTOMATIC CONTROL OF THE MODES OF THEIR LOCKING FOR THE WHEELED VEHICLE |
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US20050106958A1 (en) * | 2003-09-22 | 2005-05-19 | Kazuhiko Ohtsuki | Boat propulsion system |
CN102943859A (en) * | 2012-11-23 | 2013-02-27 | 天津工程机械研究院 | Hydraulic mechanical continuously variable transmission for loader |
RU2013124307A (en) * | 2013-05-28 | 2014-12-10 | Евгений Владимирович Габай | TRANSMISSION WITH HYDRAULIC INTER-axle and inter-wheel DIFFERENTIAL RELATIONS AND AUTOMATIC CONTROL OF THE MODES OF THEIR LOCKING FOR THE WHEELED VEHICLE |
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WO2019195992A1 (en) * | 2018-04-10 | 2019-10-17 | 北京理工大学 | Three-section mechanical composite stepless transmission apparatus for use in engineering machinery |
CN110397732A (en) * | 2019-08-02 | 2019-11-01 | 合肥工业大学 | A kind of dynamic property speed change optimal control method considering HMT transmission efficiency |
CN113090731A (en) * | 2021-03-23 | 2021-07-09 | 北京理工大学 | Multi-power flow composite stepless transmission device |
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