CN106989155A - A kind of loading machine is combined continuously variable transmittion with hydraulic machinery - Google Patents
A kind of loading machine is combined continuously variable transmittion with hydraulic machinery Download PDFInfo
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- CN106989155A CN106989155A CN201710299594.4A CN201710299594A CN106989155A CN 106989155 A CN106989155 A CN 106989155A CN 201710299594 A CN201710299594 A CN 201710299594A CN 106989155 A CN106989155 A CN 106989155A
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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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Abstract
The present invention provides a kind of loading machine and is combined continuously variable transmittion with hydraulic machinery, and the transmission device includes：Hydraulic speed regulation loop, Zheng Dao mechanisms, point confluence mechanism, hydraulic pressure section fixed axis gear transmission mechanism, I section of fixed axis gear transmission mechanism of hydraulic machinery, II section of fixed axis gear transmission mechanism of hydraulic machinery and output par, c.The forward gear of the transmission device is respectively used to low speed operation and the at a high speed hydro-mechanical segment of walking comprising a hydraulic pressure starting section and two, three active section continuous changes, the speed consecutive variations of Hydraulic Elements, clutch switches without speed difference, manipulate simple, transmission efficiency, the power of required Hydraulic Elements is smaller；Reverse gear shift includes a hydraulic pressure section and a hydro-mechanical segment；Advance and reversing switching does not need clutch, can be achieved to take over seamlessly, on the one hand improve operating efficiency, on the other hand reduce the abrasion of clutch control element.
Description
Technical field
Invention is related to a kind of continuously variable transmittion, and in particular to a kind of hydraulic machinery is combined continuously variable transmittion, belongs to dynamic
Power drive technology field.
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, improves one of fuel economy, the developing direction as transmission system of wheel loader, domestic and international project machine
Tool producer actively develops the research of the transmission system.
CN104136812 A, CN104136813 A, the US2006/0276291 A1 of Caterpillar Tractor disclose one kind
Loading machine includes the hydro-mechanical segment and the mechanical section of a high-speed hydraulic of two continuous change with many gear hydromechanical transmissions,
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 adopting
It is combined with the two-way of hydraulic machinery power, hydraulic pressure road transmitting portions power, therefore transmission efficiency becomes compared with hydraulic machine power shifting
Fast case is greatly improved.But ahead and astern conversion needs to carry out the switching of clutch, manipulate slightly complicated.
ZF companies US8328676 B2 disclose a kind of loader hydraulic mechanical driving device, using two or three liquid
Press mechanical pressing section, using point speed remittance square (Output split) and the power dividing form for dividing speed to converge fast (Compound split),
Transmission efficiency is higher, but the power of required Hydraulic Elements is larger.
The content of the invention
In view of this, the present invention provides a kind of loading machine and is combined continuously variable transmittion with hydraulic machinery, and forward gear includes one
Individual hydraulic pressure starting section and two hydro-mechanical segments for being respectively used to low speed operation and high speed walking, three active section continuous changes,
The speed consecutive variations of Hydraulic Elements, clutch switches without speed difference, manipulates simple, transmission efficiency, the work(of required Hydraulic Elements
Rate is smaller；Reverse gear shift includes a hydraulic pressure section and a hydro-mechanical segment；Advance and reversing switching does not need clutch, can be achieved
Take over seamlessly, on the one hand improve operating efficiency, on the other hand reduce the abrasion of clutch control element.
A kind of loading machine is combined continuously variable transmittion with hydraulic machinery, including：Hydraulic speed regulation loop, Zheng Dao mechanisms, Fen Hui
Flow mechanism, hydraulic pressure section fixed axis gear transmission mechanism, I section of fixed axis gear transmission mechanism of hydraulic machinery, II section of dead axle tooth of hydraulic machinery
Wheel drive mechanism and output par, c；
The hydraulic speed regulation loop includes：Hydraulic pump, hydraulic motor and slippage pump, the hydraulic pump are two-way variable displacement pump；
The hydraulic pump constitutes closed hydraulic loop with hydraulic motor, and the slippage pump maintains the low pressure pressure of the closed hydraulic loop
Power, and provide control oil pressure for the hydraulic pump；
The Zheng Dao mechanisms include：Gear A, gear B, gear D, gear Q, gear R, gear S, clutch KV, clutch
KR and the input shaft being supported on housing, axle B and axle C；The power for coming from engine is incoming by the input shaft, described
Be connected gear Q, the gear Q and the gear R engagements that are connected on axle B on input shaft, the gear R and is connected on axle C
Gear S is engaged, and the hydraulic pump and slippage pump are connected with the axle C；The drive end of the clutch KV is connected on gear Q,
Partner is connected with the gear B, and gear B empty set is on the input shaft, when the clutch KV is combined, the gear Q
Power can be transferred to gear B；The gear B is engaged with gear D, and the gear D is connected on axle A；The clutch KR
Drive end be connected on the gear R, Partner is connected with gear A；The gear A empty set is on axle B, when clutch KR knots
During conjunction, the gear R can impart power to gear A, the gear A and gear D engagement；
Described point of confluence mechanism includes：The gear on external toothing duplex row is arranged and connected firmly to external toothing duplex；Nibbled outside described
Closing duplex row includes：Planet carrier, the first sun gear, double-planetary gear, gear ring and the second sun gear；It is connected on the planet carrier
Have and gear P is fixed with gear C, the gear ring, second sun gear is coaxially connected with gear N；First sun gear is consolidated
It is connected on axle A；
The hydraulic pressure section fixed axis gear transmission mechanism includes：Axle F, gear M, gear E, gear T, gear L, clutch K1With
Gear F；Gear M and gear E, the gear M are fixed with hydraulic motor and axle the F connections, axle F with dividing in confluence mechanism
Gear P is engaged, the gear E and gear T engagements, gear T and gear the L engagement；The clutch K1Drive end
Affixed with gear L of the empty set on axle G, post-boost phase is connected with the axle G, and be connected gear F on axle G, as the clutch K1Knot
During conjunction, the gear L can will be transmitted to gear F；
Described I section of fixed axis gear transmission mechanism of hydraulic machinery includes：Gear C, gear I, clutch K2And gear H；It is described
Gear C is engaged with gear I, and gear H is connected on axle E, and is engaged with gear F；The gear I empty sets are on axle E, the clutch
Device K2Drive end and gear I be connected, Partner is connected with axle E；As the clutch K2With reference to when, gear I can pass power
It is handed to axle E；
Described II section of fixed axis gear transmission mechanism of hydraulic machinery includes：Gear N, gear K, clutch K3；The gear N with
The gear K engagements, the gear K empty sets are on axle E；The clutch K3Drive end be connected on the gear K, passively
End is connected with axle E；As the clutch K3With reference to when, power can be transferred to axle E by the gear K；
The output par, c includes：Output shaft and the gear J being fixed on output shaft, the gear J are engaged with gear F.
The drive shift of the continuously variable transmittion includes pure hydraulic pressure section and two hydro-mechanical segments：
As the clutch K1With clutch K2During engagement, in pure hydraulic pressure section：Power is after input shaft is inputted, successively
Hydraulic pump is delivered to by gear Q, gear R and gear S, hydraulic pump passes to power after hydraulic motor, then sequentially passes through tooth
Wheel E, gear T, gear L, gear F and gear J are transferred to output shaft；
As the clutch KV, clutch K2During engagement, in I section of hydraulic machinery, mechanical output is inputted by input shaft
Afterwards, the first sun gear that gear Q, clutch KV, gear B, gear D are input in point confluence mechanism is sequentially passed through；Hydraulic pressure road work(
Rate sequentially passes through hydraulic motor, gear M, gear P, is input to gear ring；Two-way power is sequentially passed through after a point confluence mechanism is converged
Planet carrier, gear C, gear I, clutch K2, gear C, gear F, gear J be transferred to output shaft；
As the clutch KV, clutch K3During engagement, in II section of hydraulic machinery, mechanical output is inputted by input shaft
Afterwards, the first sun gear that gear Q, gear B, gear D are input in point confluence mechanism is sequentially passed through；Hydraulic pressure road power is sequentially passed through
Hydraulic motor, gear M, gear P are input to gear ring；Two-way power after a point confluence mechanism is converged, sequentially pass through the second sun gear,
Gear N, gear K, clutch K3, gear C, gear F, gear J be transferred to output shaft.
The reverse gear of the continuously variable transmittion includes reverse gear a pure hydraulic pressure section and a hydro-mechanical segment of reversing gear：
As the clutch K1With clutch K2During engagement, the variable direction of hydraulic pump is adjusted, changes the side of hydraulic motor
To be at reversing gear pure hydraulic pressure section：Power sequentially passes through gear Q, gear R and gear S and is delivered to after input shaft is inputted
Hydraulic pump, hydraulic pump passes to power after hydraulic motor, then sequentially passes through gear E, gear T, gear L, gear F and gear J
It is transferred to output shaft；
As the clutch KR, clutch K2During engagement, in hydro-mechanical segment of reversing gear, mechanical output is defeated by input shaft
After entering, the first sun gear that gear Q, gear R, gear A, gear D are input in point confluence mechanism is sequentially passed through；Hydraulic pressure road power
Gear ring is input to by hydraulic motor, gear M, gear P；Two-way power after a point confluence mechanism is converged, sequentially pass through planet carrier,
Gear C, gear I, clutch K2, gear C, gear F, gear J be 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.
Using three sections of continous ways, first paragraph is pure hydraulic pressure, for starting and low-reverse, advances and low-reverse operating mode is cut
Change and do not need clutch, can be achieved to take over seamlessly, on the one hand improve operating efficiency, on the other hand reduce clutch control element
Abrasion.Second segment, the 3rd section be hydro-mechanical segment, compared with conventional fluid torque machine power manual transmission, improve transmission efficiency.
(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, the life-span of clutch friction plate is improved；Intersegmental switching is only grasped
1 clutch is indulged, the design of shift logic and steerable system is simplified.
(5) 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.
Except a point confluence mechanism, other parts are driven using fixed axis gear, and loader drive mechanism input on the one hand can be achieved
With the center of output drop away from technique and processing cost on the other hand can be reduced.
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, 5- clutch KR, 6- gear B, 7- input shafts, 8-
Planet carrier, 9- gear Cs, 10- gear Ds, the sun gear of 11- axles A, 12- first, 13- hydraulic motors, 14- gear E, 15- gears F,
16- axle G, 17- gear H, 18- gear I, 19- clutches K2, 20- gear J, 21- axle D, 22- axle E, 23- clutches K3, 24- teeth
Take turns K, 25- gear L, 26- clutch K1, 27- gear M, 28- axle F, 29- double-planetary gear, the sun gears of 30- second, 31- gears
N, 32- gear P, 33- gear ring, 34- gear Q, 35- clutch KV, 36- axle B, 37- gear R, 38- gear S, 39- axle C, 40- teeth
Take turns T.
Embodiment
The present invention will now be described in detail with reference to the accompanying drawings and examples.
Present embodiments provide a kind of three-stage hydraulic machinery for loading machine and be combined continuously variable transmittion, transmission dress
Put comprising a hydraulic pressure starting section and two hydro-mechanical segments, can be big compared to loading machine hydraulic machine dynamic power shift gear box
Width improves the transmission efficiency of transmission device, and engine can be made often to work in economic speed is interval, reduce loading machine oil consumption and
Noise level；And advance and reversing switching do not need clutch, can be achieved to take over seamlessly.
The transmission device is carried out confluxing for hydraulic power and mechanical output using planetary mechanism, and first paragraph is pure hydraulic pressure section,
Second and third section is point hydro-mechanical segment of fast (input split) form of square remittance.First paragraph is used to start to walk and low-reverse；The
Two sections are used for low speed working condition, and due to being combined using hydraulic power and mechanical output, transmission efficiency is changed compared with hydraulic machine power
Keep off gearbox high；3rd section is used for high speed traveling, it is ensured that the efficient and low oil consumption during transition.Astern condition is two sections,
Reverse gear pure hydraulic pressure section and I section of the hydraulic machinery that reverses gear.
The transmission sketch of the transmission device as shown in figure 1, including：Hydraulic speed regulation loop, Zheng Dao mechanisms, point confluence mechanism,
Hydraulic pressure section fixed axis gear transmission mechanism, I section of fixed axis gear transmission mechanism of hydraulic machinery, II section of fixed axis gear driver of hydraulic machinery
Structure and output par, c.
Hydraulic speed regulation loop includes：Hydraulic pump 2, hydraulic motor 13 and slippage pump 3, hydraulic pump 2 are two-way variable displacement pump, hydraulic pressure
Motor 13 is fixed displacement motor.Hydraulic pump 2 constitutes closed hydraulic loop with hydraulic motor 13, and slippage pump 3-dimensional holds closed hydraulic loop
Low pressure, and for hydraulic pump 2 provide control oil pressure；The power for passing to hydraulic pump 2 passes to hydraulic pressure by hydraulic circuit
Motor 13.
Zheng Dao mechanisms include：Gear A 4, gear B 6, gear D 10, gear Q34, gear R37, gear S38, clutch
KV35, clutch KR5 and the input shaft 7 being supported on housing 1, axle B36 and axle C39.The power for coming from engine passes through
Input shaft 7 is incoming, and be connected gear Q34, gear Q34 and the gear R37 engagements being connected on axle B36, gear R37 on input shaft 7
With gear S38 engagements, the axle C39 affixed gear S38 in one end, the other end is connected with hydraulic pump 2 and slippage pump 3.Come from and start
The power of machine passes to gear Q34 to pass to gear R37 and gear S38 by input shaft 7, so pass to axle C39 and
Hydraulic pump 2, so as to pass to hydraulic speed regulation loop.Clutch KV35 drive end is connected on gear Q34, Partner and gear
B6 is connected；The empty set of gear B 6 is on input shaft 7.Gear B 6 is engaged with gear D 10, and gear D 10 is connected on axle A11, on axle A11
It is connected with the first sun gear 12 in point confluence mechanism.When clutch KV35 is combined, a gear Q34 power part is passed to
Gear B 6 is passed to, and then passes to by gear D 10, axle A11 the first sun gear 12 in point confluence mechanism.Clutch KR5
Drive end be connected on gear R37, Partner is connected with gear A 4；The empty set of gear A 4 is on axle B36, when clutch KR5 knots
During conjunction, gear R37 can impart power to gear A 4, and gear A 4 and gear D 10 are engaged.If with reference to clutch KR5, passing to
A gear R37 power part passes to gear A 4, and first in point confluence mechanism is then passed to by gear D 10, axle A11
Sun gear 12.
The gear that point confluence mechanism is arranged and connected firmly by external toothing duplex on top is constituted, and wherein external toothing duplex row includes：
Planet carrier 8, the first sun gear 12, double-planetary gear 29, the sun gear 30 of gear ring 33 and second；Gear is fixed with planet carrier 8
Gear P32 is fixed with C9, gear ring 33, the second sun gear 30 is coaxially connected with gear N31, and gear N31 and hydro-mechanical segment
Gear K24 engagements in II gear drive.The mechanical output for coming from engine is inputted by the first sun gear 12, is come from
Inputted in the hydraulic power of hydraulic motor 13 by gear P32, this point of confluence mechanism has two-way output to be respectively gear C 9 and tooth
Take turns N31, respectively I section of hydraulic machinery, the output of II section of hydraulic machinery.
Hydraulic pressure section fixed axis gear transmission mechanism includes：Axle F28, gear M27, gear E14, gear T40, gear L25, clutch
Device K126 and gear F15.Be fixed with gear M27 and gear E14 on hydraulic motor 13 and axle F28 connections, axle F28, gear M27 with
The gear P32 engagements divided in confluence mechanism, gear E14 and gear T40 engagements, gear T40 and gear L25 engagements；Clutch
K126 drive end is connected with gear L25 of the empty set on axle G16, and post-boost phase is connected with the axle G16 being supported on housing 1, axle
Be connected gear F15 on G16, as clutch K126 when combining, and gear L25 can will be transmitted to gear F15.Gear F15 and hydraulic pressure
Gear J20 engagements on gear H17 and output shaft 21 in the gear drive of robotic segments I.As clutch K126 when combining,
The power for coming from hydraulic motor 13 passes sequentially through axle F28, gear E14, gear T40, gear L25, clutch K126th, axle G16,
Gear F15, gear J20, output shaft 21 output power direct drive elevating conveyor.On the other hand, gear M27 and point confluence mechanism
In gear P32 engagements, the power of hydraulic motor 13 passes sequentially through axle F28, gear M27, gear P32 and passes to the machine that point confluxes
Structure.
I section of fixed axis gear transmission mechanism of hydraulic machinery includes：Gear C 9, gear I18, clutch K219th, gear H17 and tooth
Take turns F15.Wherein gear C 9 is engaged with gear I18, and gear H17 is connected on axle E22, and is engaged with gear F15；Gear F15 with
Gear J20 engagements on output shaft 21；Gear I18 empty sets are on axle E22, clutch K219 drive end is connected with gear I18,
Partner is connected with axle E22.As clutch K219 when combining, and power can be transferred to axle E22 by gear I18, and this time-division confluxes
The power output of planet carrier 8 in mechanism, then passes sequentially through gear C 9, gear I18, clutch K219th, axle E22, gear H17,
Gear F15, gear J20, final output shaft 21 output power.
II section of fixed axis gear transmission mechanism of hydraulic machinery includes：Gear N31, gear K24, clutch K323 and and hydraulic press
I section of fixed axis gear transmission mechanism of tool shared gear H17 and gear F15.With the coaxial affixed gear N31 of the second sun gear 30 with
Gear K24 is engaged, and gear K24 empty sets are on axle E22, and gear C 17 is connected on axle E22, and engaged with gear F15；Gear F15
Engaged with the gear J20 on output shaft 21；Clutch K323 drive end is connected on gear K24, and Partner is consolidated with axle E22
Even.As clutch K323 when combining, and power can be transferred to axle E22 by gear K24, now, and second in point confluence mechanism is too
Sun 30 power outputs of wheel, then pass sequentially through gear N31, gear K24, clutch K323rd, axle E22, gear H17, gear F15,
Gear J20, final output shaft 21 outputs power.
Output par, c includes：Output shaft 21 and the gear J20 being fixed on output shaft 21, engine power pass through hydraulic press
The front-rear axle of loading machine is output to after tool gearbox.
The transmission device has three power takings mouthful, is PTO1, PTO2 and PTO3, A axles 7, axle B36 and axle C39 are connected respectively.
The transmission principle that each section of the continuously variable transmittion is：
First paragraph is pure hydraulic pressure section：Under the pattern, clutch K126 and clutch K2(this section first combines clutch for 19 engagements
K219, in order to next section only need to manipulate a clutch just can be with, due to the two degree-of-freedom motion property of planet row, with reference to from
Clutch K219 motions will not interfere with.And next section when combining, but realize clutch KV35 without speed difference combination), engine
Power by input shaft 7 input after, sequentially pass through gear Q34, gear R37, gear S38 and axle C39 and be delivered to hydraulic pump 2,
Hydraulic pump 2 passes to power after hydraulic motor 13, then is delivered to gear E14, gear T40；Due to now clutch K126 connect
Close, the torque of hydraulic motor 13 is exported after gear L25 again, gear F15 and gear J20 deceleration.The achievable zero-speed of hydraulic pressure section
Starting, the cunning for reducing clutch starting is rubbed process, improves the reliability of parts；Hydraulic pressure section output speed accurately can may be used simultaneously
Control, is conducive to the Accurate Position Control in low speed loading process.
Second segment is I section of hydraulic machinery：In this mode, clutch KV35, clutch K219 engagements, engine power warp
Cross input shaft 7, gear Q34, clutch KV35, gear B 6, gear D 10, axle A11, then first be input in point confluence mechanism
Sun gear 12；Hydraulic pressure road power sequentially passes through hydraulic motor 13, axle F28, gear M27, gear P32, is input to gear ring 33.Two-way
Power sequentially passes through planet carrier 8, gear C 9, gear I18, clutch K after a point confluence mechanism is converged219th, axle E22, gear
C17, gear F15, gear J20, final output shaft 21 output power.
3rd section is II section of hydraulic machinery, in this mode, clutch KV35, clutch K323 engagements, engine power
By input shaft 7, gear Q34, gear B 6, gear D 10, axle A11, then the first sun gear 12 being input in point confluence mechanism；
Hydraulic pressure road power sequentially passes through hydraulic motor 13, axle F28, gear M27, gear P32, is input to gear ring 33.Two-way power is dividing
After confluence mechanism is converged, the second sun gear 30, gear N31, gear K24, clutch K are sequentially passed through323rd, axle E22, gear C 17,
Gear F15, gear J20, final output shaft 21 output power.
The power transmission route for pure hydraulic pressure Duan Yuchun hydraulic pressure section of reversing gear is identical, simply by the variable side of adjustment hydraulic pump 2
To the direction of change hydraulic motor 13.
Reverse gear I section of hydraulic machinery：In this mode, clutch KR5, clutch K219 engagements, engine power is by defeated
Enter axle 7, gear Q34, gear R37, clutch KR5, gear A 4, gear D 10, axle A11, be input to first in point confluence mechanism
Sun gear 12；Hydraulic pressure road power passes through hydraulic motor 13, axle F28, gear M27, gear P32, is input to gear ring 33.Two-way power
After a point confluence mechanism is converged, planet carrier 8, gear C 9, gear I18, clutch K are sequentially passed through219th, axle E22, gear C 17, tooth
F15, gear J20 are taken turns, final output shaft 21 outputs power.
The transmission device can realize that power changes section, during intersegmental linking, can first engage next section of clutch, then separate one
The clutch of section, that realizes power does not interrupt transmission, it is ensured that not interrupting for power transmission, improves operating efficiency, and ensure gearshift
Comfortableness.
The shift logic of the transmission device is as shown in table 1.
The present embodiment matches 5 tons of loading machines, and hydraulic pump, the rotating speed of motor are with the laws about modified speed of speed as shown in Fig. 2 curve
4 be the rotating speed of hydraulic pump, proportional to engine speed.The rotating speed of hydraulic motor is continually changing, so as to realize output speed
Step-less adjustment.Curve 1 is pure hydraulic pressure section motor rotary speed, and curve 2 is I section of motor rotary speed of hydraulic machinery, and curve 3 is hydraulic machinery II
Section motor rotary speed.The maximum pressure of hydraulic pump is with the laws about modified speed of speed as shown in figure 3, curve 1,2,3 corresponds to pure hydraulic pressure respectively
II section of section, I section of hydraulic machinery and hydraulic machinery.The torque capacity of output with speed laws about modified speed as shown in figure 4, curve 1,2,
3 correspond to II section of pure hydraulic pressure section, I section of hydraulic machinery and hydraulic machinery respectively.Efficiency curve as shown in figure 5, solid line be pure hydraulic pressure section,
The efficiency curve of II section of I section of hydraulic machinery and hydraulic machinery, dotted line is the efficiency of loading machine hydraulic machine dynamic power shift gear box
Curve.The efficiency of transmission device of the present invention is apparently higher than hydraulic machine dynamic power shift gear box.
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 is combined continuously variable transmittion with hydraulic machinery, it is characterised in that including：Hydraulic speed regulation loop, just falling
Mechanism, point confluence mechanism, hydraulic pressure section fixed axis gear transmission mechanism, I section of fixed axis gear transmission mechanism of hydraulic machinery, hydraulic machinery II
Section fixed axis gear transmission mechanism and output par, c；
The hydraulic speed regulation loop includes：Hydraulic pump (2), hydraulic motor (13) and slippage pump (3), the hydraulic pump (2) is double
To variable pump；The hydraulic pump (2) and hydraulic motor (13) constitute closed hydraulic loop, the slippage pump (3) maintain described in close
The low pressure of formula hydraulic circuit, and provide control oil pressure for the hydraulic pump (2)；
The Zheng Dao mechanisms include：Gear A (4), gear B (6), gear D (10), gear Q (34), gear R (37), gear S
(38), clutch KV (35), clutch KR (5) and the input shaft (7), axle B (36) and the axle C (39) that are supported on housing (1)；
The power for coming from engine is incoming by the input shaft (7), and be connected gear Q (34), the gear on the input shaft (7)
Q (34) and gear R (37) engagements being connected on axle B (36), the gear R (37) and the gear S being connected on axle C (39)
(38) engage, the hydraulic pump (2) and slippage pump (3) are connected with the axle C (39)；The drive end of the clutch KV (35) is consolidated
It is connected on gear Q (34), Partner is connected with the gear B (6), gear B (6) empty set is on the input shaft (7), when described
When clutch KV (35) is combined, power can be transferred to gear B (6) by the gear Q (34)；The gear B (6) and gear D
(10) engage, the gear D (10) is connected on axle A (11)；The drive end of the clutch KR (5) is connected in the gear R
(37) on, Partner is connected with gear A (4)；Gear A (4) empty set is on axle B (36), when clutch KR (5) is combined,
The gear R (37) can impart power to gear A (4), the gear A (4) and gear D (10) engagement；
Described point of confluence mechanism includes：The gear on external toothing duplex row is arranged and connected firmly to external toothing duplex；The external toothing is double
Townhouse includes：Planet carrier (8), the first sun gear (12), double-planetary gear (29), gear ring (33) and the second sun gear (30)；
It is fixed with the planet carrier (8) on gear C (9), the gear ring (33) and is fixed with gear P (32), second sun gear
(30) it is coaxial connected with gear N (31)；First sun gear (12) is fixed on axle A (11)；
The hydraulic pressure section fixed axis gear transmission mechanism includes：Axle F (28), gear M (27), gear E (14), gear T (40), gear
L (25), clutch K1And gear F (15) (26)；It is connected on the hydraulic motor (13) and axle F (28) connections, axle F (28) with teeth
Take turns M (27) and gear E (14), the gear M (27) is engaged with the gear P (32) in point confluence mechanism, the gear E (14) and
Gear T (40) engagement, the gear T (40) and gear L (25) engagements；The clutch K1(26) drive end and empty set
Gear L (25) on axle G (16) is affixed, and post-boost phase is connected with the axle G (16), and be connected gear F (15) on axle G (16), when
The clutch K1(26) when combining, the gear L (25) can will be transmitted to gear F (15)；
Described I section of fixed axis gear transmission mechanism of hydraulic machinery includes：Gear C (9), gear I (18), clutch K2And gear (19)
H(17)；The gear C (9) is engaged with gear I (18), and gear H (17) is connected on axle E (22), and is engaged with gear F (15)；
Gear I (18) empty sets are on axle E (22), the clutch K2(19) drive end is connected with gear I (18), Partner with
Axle E (22) is connected；As the clutch K2(19) when combining, power can be transferred to axle E (22) by gear I (18)；
Described II section of fixed axis gear transmission mechanism of hydraulic machinery includes：Gear N (31), gear K (24), clutch K3(23)；It is described
Gear N (31) is engaged with the gear K (24), and gear K (24) empty sets are on axle E (22)；The clutch K3(23)
Drive end is connected on the gear K (24), and Partner is connected with axle E (22)；As the clutch K3(23) it is described when combining
Power can be transferred to axle E (22) by gear K (24)；
The output par, c includes：Output shaft (21) and the gear J (20) being fixed on output shaft (21), the gear J (20)
Engaged with gear F (15).
2. loading machine as claimed in claim 1 is combined continuously variable transmittion with hydraulic machinery, it is characterised in that the stepless transmission
The drive shift of device includes pure hydraulic pressure section and two hydro-mechanical segments：
As the clutch K1And clutch K (26)2(19) when engaging, in pure hydraulic pressure section：Power is inputted by input shaft (7)
Afterwards, gear Q (34), gear R (37) and gear S (38) are sequentially passed through and is delivered to hydraulic pump (2), hydraulic pump (2) transmits power
After hydraulic motor (13), then sequentially pass through gear E (14), gear T (40), gear L (25), gear F (15) and gear J (20)
It is transferred to output shaft (21)；
As the clutch KV (35), clutch K2(19) when engaging, in I section of hydraulic machinery, mechanical output passes through input shaft
(7) after inputting, gear Q (34), clutch KV (35), gear B (6), gear D (10) is sequentially passed through and is input in point confluence mechanism
The first sun gear (12)；Hydraulic pressure road power sequentially passes through hydraulic motor (13), gear M (27), gear P (32), is input to tooth
Enclose (33)；Two-way power sequentially passes through planet carrier (8), gear C (9), gear I (18), clutch after a point confluence mechanism is converged
K2(19), gear C (17), gear F (15), gear J (20) are transferred to output shaft (21)；
As the clutch KV (35), clutch K3(23) when engaging, in II section of hydraulic machinery, mechanical output passes through input shaft
(7) after inputting, the first sun gear that gear Q (34), gear B (6), gear D (10) are input in point confluence mechanism is sequentially passed through
(12)；Hydraulic pressure road power sequentially passes through hydraulic motor (13), gear M (27), gear P (32) and is input to gear ring (33)；Two-way work(
Rate sequentially passes through the second sun gear (30), gear N (31), gear K (24), clutch K after a point confluence mechanism is converged3(23)、
Gear C (17), gear F (15), gear J (20) are transferred to output shaft (21).
3. loading machine as claimed in claim 1 is combined continuously variable transmittion with hydraulic machinery, it is characterised in that the stepless transmission
The reverse gear of device includes reverse gear a pure hydraulic pressure section and a hydro-mechanical segment of reversing gear：
As the clutch K1And clutch K (26)2(19) when engaging, the variable direction of adjustment hydraulic pump (2) changes hydraulic pressure horse
Up to the direction of (13), pure hydraulic pressure section of reversing gear is at：Power by input shaft (7) input after, sequentially pass through gear Q (34),
Gear R (37) and gear S (38) are delivered to hydraulic pump (2), and hydraulic pump (2) passes to power after hydraulic motor (13), then according to
Secondary process gear E (14), gear T (40), gear L (25), gear F (15) and gear J (20) are transferred to output shaft (21)；
As the clutch KR (5), clutch K2(19) when engaging, in hydro-mechanical segment of reversing gear, mechanical output passes through input shaft
(7) after inputting, gear Q (34), gear R (37), gear A (4), gear D (10) is sequentially passed through and is input in point confluence mechanism
First sun gear (12)；Hydraulic pressure road power is input to gear ring (33) by hydraulic motor (13), gear M (27), gear P (32)；
Two-way power sequentially passes through planet carrier (8), gear C (9), gear I (18), clutch K after a point confluence mechanism is converged2(19)、
Gear C (17), gear F (15), gear J (20) are transferred to output shaft (21).
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| CN201710299594.4A CN106989155B (en) | 2017-05-02 | 2017-05-02 | A kind of compound continuously variable transmittion of loading machine hydraulic machinery |
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| CN201710299594.4A CN106989155B (en) | 2017-05-02 | 2017-05-02 | A kind of compound continuously variable transmittion of loading machine hydraulic machinery |
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| CN106989155B CN106989155B (en) | 2019-01-22 |
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| CN113137462A (en) * | 2021-05-18 | 2021-07-20 | 吉林大学 | Walking transmission device of working vehicle and control method thereof |
| 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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| CN113137462A (en) * | 2021-05-18 | 2021-07-20 | 吉林大学 | Walking transmission device of working vehicle and control method thereof |
| 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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| CN106989155B (en) | 2019-01-22 |
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