CN106989155B - A kind of compound continuously variable transmittion of loading machine hydraulic machinery - Google Patents
A kind of compound continuously variable transmittion of loading machine hydraulic machinery Download PDFInfo
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- CN106989155B CN106989155B CN201710299594.4A CN201710299594A CN106989155B CN 106989155 B CN106989155 B CN 106989155B CN 201710299594 A CN201710299594 A CN 201710299594A CN 106989155 B CN106989155 B CN 106989155B
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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 compound continuously variable transmittion of loading machine hydraulic machinery, which includes: hydraulic speed regulation loop, Zheng Dao mechanism, point confluence mechanism, hydraulic section of 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 includes the hydro-mechanical segment that a hydraulic starting section and two are 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, manipulation is simple, transmission efficiency is high, and the power of required Hydraulic Elements is smaller；Reverse gear shift includes one hydraulic section and a hydro-mechanical segment；Advance and reversing switching does not need clutch, it can be achieved that smoothly switching, on the one hand improves 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 compound continuously variable transmittion of hydraulic machinery belongs to dynamic
Power transmission technical field.
Background technique
Currently, engineering machinery loading machine generallys use hydraulic machine dynamic power shift gear box, 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 shifting hydraulic mechanical transmission 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, improves fuel economy, becomes one of developing direction of 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 is with more gear hydromechanical transmissions, 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 shifting
Fast case is greatly improved.But ahead and astern converts the switching for needing to carry out clutch, and manipulation is slightly complicated.
ZF company US8328676 B2 discloses a kind of loader hydraulic mechanical driving device, using two or three liquid
Press mechanical pressing section, the power dividing form converged square (Output split) using point speed and speed is divided to converge fast (Compound split),
Transmission efficiency is higher, but the power of required Hydraulic Elements is larger.
Summary of the invention
In view of this, the present invention provides a kind of compound continuously variable transmittion of loading machine hydraulic machinery, forward gear includes one
A hydraulic starting section and two hydro-mechanical segments for being respectively used to low speed operation and walking at a high speed, three active section continuous changes,
The speed consecutive variations of Hydraulic Elements, clutch switch without speed difference, and manipulation is simple, and transmission efficiency is high, the function of required Hydraulic Elements
Rate is smaller；Reverse gear shift includes one hydraulic section and a hydro-mechanical segment；Advance and reversing switching do not need clutch, it can be achieved that
It smoothly switches, on the one hand improves operating efficiency, on the other hand reduce the abrasion of clutch control element.
A kind of compound continuously variable transmittion of loading machine hydraulic machinery, comprising: hydraulic speed regulation loop, Zheng Dao mechanism, Fen Hui
Flow mechanism, hydraulic section of fixed axis gear transmission mechanism, II section of I section of fixed axis gear transmission mechanism of hydraulic machinery, hydraulic machinery dead axle tooth
Wheel drive mechanism and output par, c；
The hydraulic speed regulation loop includes: hydraulic pump, hydraulic motor and slippage pump, and 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 pressure of the closed hydraulic loop
Power, and control oil pressure is provided for the hydraulic pump；
The Zheng Dao mechanism includes: gear A, gear B, gear D, gear Q, gear R, gear S, clutch KV, clutch
KR and the input shaft being supported on shell, axis B and axis C；Power from engine is incoming by the input shaft, described
On input shaft be connected gear Q, the gear Q and the gear R being connected on axis B engagement, the gear R be connected on axis C
Gear S engagement, the hydraulic pump and slippage pump are connected with the axis 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 axis 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 axis B, when clutch KR is tied
When conjunction, the gear R can impart power to gear A, the gear A and gear D engagement；
Described point of confluence mechanism includes: that the gear on external toothing duplex row is arranged and connected firmly to external toothing duplex；It is 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
There is gear C, gear P is fixed on the gear ring, second sun gear is coaxially connected with gear N；First sun gear is solid
It connects on axis A；
The hydraulic section of fixed axis gear transmission mechanism includes: axis F, gear M, gear E, gear T, gear L, clutch K1With
Gear F；The hydraulic motor is connected with axis F, and gear M and gear E, the gear M are fixed on axis F and is divided in confluence mechanism
Gear P engagement, the gear E and gear T engagement, the gear T and gear L engagement；The clutch K1Drive end
Affixed with gear L of the empty set on axis G, post-boost phase is connected with the axis G, and be connected gear F on axis G, as the clutch K1Knot
When conjunction, the gear L can will be transmitted to gear F；
I section of fixed axis gear transmission mechanism of the 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 axis E, and is engaged with gear F；The gear I empty set is on axis E, the clutch
Device K2Drive end and gear I be connected, Partner and axis E are connected；As the clutch K2In conjunction with when, gear I can pass power
It is handed to axis E；
II section of fixed axis gear transmission mechanism of the hydraulic machinery includes: gear N, gear K, clutch K3；The gear N with
The gear K engagement, the gear K empty set is on axis E；The clutch K3Drive end be connected on the gear K, passively
End is connected with axis E；As the clutch K3In conjunction with when, power can be transferred to axis E by the gear K；
The output par, c includes: output shaft and the gear J being fixed on output shaft, and the gear J is engaged with gear F.
The drive shift of the continuously variable transmittion includes pure hydraulic section and two hydro-mechanical segments:
As the clutch K1With clutch K2When engagement, be in pure hydraulic section: power is after input shaft inputs, successively
Be transmitted to hydraulic pump by gear Q, gear R, gear S, hydraulic pump by power transfer to hydraulic motor after, then successively pass through tooth
Wheel E, gear T, gear L, gear F and gear J are transferred to output shaft；
As the clutch KV, clutch K2When engagement, it is in hydraulic machinery I sections, mechanical output is inputted by input shaft
Afterwards, the first sun gear in point confluence mechanism successively is imported by gear Q, clutch KV, gear B, gear D；Hydraulic pressure road function
Rate successively passes through hydraulic motor, gear M, gear P, is input to gear ring；Two-way power successively passes through after a point confluence mechanism is converged
Planet carrier, gear C, gear I, clutch K2, gear H, gear F, gear J be transferred to output shaft；
As the clutch KV, clutch K3When engagement, it is in hydraulic machinery II sections, mechanical output is inputted by input shaft
Afterwards, the first sun gear in point confluence mechanism successively is input to by gear Q, gear B, gear D；Hydraulic pressure road power successively passes through
Hydraulic motor, gear M, gear P, are input to gear ring；Two-way power successively passes through second sun after a point confluence mechanism is converged
Wheel, gear N, gear K, clutch K3, gear H, gear F, gear J be transferred to output shaft.
The reverse gear of the continuously variable transmittion includes a reverse gear pure hydraulic section and a reverse gear hydro-mechanical segment:
As the clutch K1With clutch K2When engagement, the variable direction of hydraulic pump is adjusted, the side of hydraulic motor is changed
To be at pure hydraulic section of reverse gear: power is successively transmitted to by gear Q, gear R, gear S after input shaft inputs
Hydraulic pump, hydraulic pump by power transfer to hydraulic motor after, then successively pass through gear E, gear T, gear L, gear F and gear
J is transferred to output shaft；
As the clutch KR, clutch K2When engagement, it is in reverse gear hydro-mechanical segment, mechanical output is defeated by input shaft
After entering, the first sun gear in point confluence mechanism successively is input to by gear Q, gear R, gear A, gear D；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, successively by planet carrier,
Gear C, gear I, clutch K2, gear H, gear F, gear J be transferred to output shaft.
The utility model has the advantages that
(1) hydraulic compound with mechanical power, hydraulic pressure road transmitting portions power is used, 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.
(2) use three sections of continous ways, first segment be it is pure hydraulic, for start to walk and low-reverse, advance and low-reverse work
Condition switching does not need clutch, it can be achieved that smoothly switching, and on the one hand improves operating efficiency, on the other hand reduces clutch control
The abrasion of element.Second segment, third section improve transmission compared with conventional fluid torque machine power manual transmission for hydro-mechanical segment
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 of clutch switches between achievable section, improves the service life of clutch friction plate；Switching is only grasped between section
1 clutch is indulged, the design of shift logic and steerable system is simplified.
(5) due to the presence of hydraulic speed regulation system, it can be achieved that power shifting, first engages next section of clutch, unclamp again
The clutch of the preceding paragraph guarantees the not interrupt output of power, improves operating efficiency.
Except confluence mechanism is divided, 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.
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, 5- clutch KR, 6- gear B, 7- input shaft, 8-
Planet carrier, 9- gear C, 10- gear D, the first sun gear of 11- axis A, 12-, 13- hydraulic motor, 14- gear E, 15- gear F,
16- axis G, 17- gear H, 18- gear I, 19- clutch K2, 20- gear J, 21- axis D, 22- axis E, 23- clutch K3, 24- tooth
Take turns K, 25- gear L, 26- clutch K1, 27- gear M, 28- axis F, 29- double-planetary gear, the second sun gear of 30-, 31- gear
N, 32- gear P, 33- gear ring, 34- gear Q, 35- clutch KV, 36- axis B, 37- gear R, 38- gear S, 39- axis C, 40- tooth
Take turns T.
Specific embodiment
The present invention will now be described in detail with reference to the accompanying drawings and examples.
Present embodiments provide a kind of compound continuously variable transmittion of three-stage hydraulic machinery for loading machine, transmission dress
Setting can be big compared to loading machine hydraulic machine dynamic power shift gear box comprising a hydraulic starting section and two hydro-mechanical segments
Width improves the transmission efficiency of transmission device, and engine can be made often to work in economic speed section, reduce loading machine oil consumption and
Noise level；And advances and move backward to switch and do not need clutch, it can be achieved that smoothly switching.
The transmission device carries out the confluence of hydraulic power and mechanical output using planetary mechanism, and first segment is pure hydraulic section,
Second and third section is the hydro-mechanical segment for dividing square to converge fast (input split) form.First segment is for starting and low-reverse；The
Two sections are used for low speed working condition, and due to compound using hydraulic power and mechanical output, transmission efficiency is changed compared with hydraulic machine power
It is high to keep off gearbox；Third section is used for high speed traveling, it is ensured that the efficient and low oil consumption during transition.Astern condition is two sections,
It reverses gear and pure hydraulic section and reverses gear I section of hydraulic machinery.
The transmission schematic diagram of the transmission device is as shown in Figure 1, comprising: hydraulic speed regulation loop, Zheng Dao mechanism, divide confluence mechanism,
II section of hydraulic section of fixed axis gear transmission mechanism, I section of fixed axis gear transmission mechanism of hydraulic machinery, hydraulic machinery fixed axis gear driver
Structure and output par, c.
Hydraulic speed regulation loop includes: hydraulic pump 2, hydraulic motor 13 and slippage pump 3, and hydraulic pump 2 is two-way variable displacement pump, hydraulic
Motor 13 is fixed displacement motor.Hydraulic pump 2 and hydraulic motor 13 form closed hydraulic loop, and slippage pump 3 maintains closed hydraulic loop
Low pressure, and provide control oil pressure for hydraulic pump 2；Pass to hydraulic pump 2 power passed to by hydraulic circuit it is hydraulic
Motor 13.
Zheng Dao mechanism includes: 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 shell 1, axis B36 and axis C39.Power from engine passes through
Input shaft 7 is incoming, and be connected gear Q34, gear Q34 and the gear R37 being connected on axis B36 engagement on input shaft 7, gear R37
It is engaged with gear S38, the affixed gear S38 in one end of axis C39, the other end is connect with hydraulic pump 2 and slippage pump 3.From starting
The power of machine passes to gear Q34 by input shaft 7 to passing to gear R37 and gear S38, so pass to axis C39 and
Hydraulic pump 2, to pass to hydraulic speed regulation loop.The drive end of clutch KV35 is connected on gear Q34, Partner and gear
B6 is connected；6 empty set of gear B is on input shaft 7.Gear B 6 is engaged with gear D 10, and gear D 10 is connected on axis A11, on axis A11
The first sun gear 12 being connected in point confluence mechanism.When clutch KV35 is combined, power a part of gear Q34 is passed to
Gear B 6 is passed to, and then passes to the first sun gear 12 in point confluence mechanism by gear D 10, axis A11.Clutch KR5
Drive end be connected on gear R37, Partner is connected with gear A 4；4 empty set of gear A is on axis B36, when clutch KR5 is tied
When conjunction, gear R37 can impart power to gear A 4, and gear A 4 and gear D 10 engage.If being passed in conjunction with clutch KR5
Power a part of gear R37 passes to gear A 4, and first in point confluence mechanism is then passed to by gear D 10, axis A11
Sun gear 12.
The gear that point confluence mechanism is arranged and connected firmly by external toothing duplex in top is constituted, and wherein external toothing duplex row includes:
Planet carrier 8, the first sun gear 12, double-planetary gear 29, gear ring 33 and the second sun gear 30；Gear is fixed on planet carrier 8
C9 is fixed with gear P32 on gear ring 33, and the second sun gear 30 is coaxially connected with gear N31, and gear N31 and hydro-mechanical segment
Gear K24 engagement in II gear drive.Mechanical output from engine is inputted by the first sun gear 12, is come from
It is inputted in the hydraulic power of hydraulic motor 13 by gear P32, it is respectively gear C 9 and tooth that this point of confluence mechanism, which has two-way output,
Take turns N31, the respectively output of I section of hydraulic machinery, II section of hydraulic machinery.
Hydraulic section of fixed axis gear transmission mechanism includes: axis F28, gear M27, gear E14, gear T40, gear L25, clutch
Device K126 and gear F15.Hydraulic motor 13 is connected with axis F28, is fixed with gear M27 and gear E14 on axis F28, gear M27 with
Divide the gear P32 engagement in confluence mechanism, gear E14 and gear T40 engagement, gear T40 and gear L25 engagement；Clutch
K1Gear L25 of 26 drive end and empty set on axis G16 is connected, and post-boost phase is connected with the axis G16 being supported on shell 1, axis
Be connected gear F15 on G16, as clutch K1When 26 combination, gear L25 can will be transmitted to gear F15.Gear F15 and hydraulic
Gear J20 engagement on gear H17 and output shaft 21 in I gear drive of robotic segments.As clutch K1When 26 combination,
Axis F28, gear E14, gear T40, gear L25, clutch K are passed sequentially through from the power of hydraulic motor 13126, axis G16,
Gear F15, gear J20, output shaft 21 output power and directly drive elevating conveyor.On the other hand, gear M27 and divide confluence mechanism
In gear P32 engagement, the power of hydraulic motor 13 passes sequentially through axis F28, gear M27, gear P32 and passes to a point confluence machine
Structure.
I section of fixed axis gear transmission mechanism of hydraulic machinery includes: gear C 9, gear I18, clutch K219, gear H17 and tooth
Take turns F15.Wherein gear C 9 is engaged with gear I18, and gear H17 is connected on axis E22, and is engaged with gear F15；Gear F15 with
Gear J20 engagement on output shaft 21；Gear I18 empty set is on axis E22, clutch K219 drive end and gear I18 is connected,
Partner and axis E22 are connected.As clutch K2When 19 combination, power can be transferred to axis E22, this time-division confluence by gear I18
8 output power of planet carrier in mechanism, then passes sequentially through gear C 9, gear I18, clutch K219, axis 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 engagement, on axis E22, gear H17 is connected on axis E22 gear K24 empty set, and is engaged with gear F15；Gear F15
It is engaged with the gear J20 on output shaft 21；Clutch K323 drive end is connected on gear K24, and Partner and axis E22 are solid
Even.As clutch K323 when combining, and power can be transferred to axis E22 by gear K24, at this point, divide in confluence mechanism second too
Sun 30 output powers of wheel, then pass sequentially through gear N31, gear K24, clutch K323, axis E22, gear H17, gear F15,
Gear J20, final output shaft 21 output power.
Output par, c includes: output shaft 21 and the gear J20 that is fixed on output shaft 21, and engine power passes through hydraulic press
The front-rear axle of loading machine is output to after tool gearbox.
There are three power taking mouths for transmission device tool, are PTO1, PTO2 and PTO3, are separately connected A axis 7, axis B36 and axis C39.
The transmission principle that each section of the continuously variable transmittion are as follows:
First segment is pure hydraulic section: under the mode, clutch K126 and clutch K2(this section first combines clutch for 19 engagements
K219, in order to next section need to only manipulate a clutch can, due to the two degree-of-freedom motion property of planet row, in conjunction with from
Clutch K219 movements will not interfere with.And when next section of combination, but realize clutch KV35 without speed difference combination), engine
Power after the input of input shaft 7, be successively transmitted to hydraulic pump 2 by gear Q34, gear R37, gear S38 and axis C39,
Hydraulic pump 2 by power transfer to hydraulic motor 13 after, then be transmitted to gear E14, gear T40；Due to clutch K at this time126 connect
It closes, the torque of hydraulic motor 13 exports after gear L25 again, gear F15 and gear J20 deceleration.Hydraulic section of achievable zero-speed
Starting, the cunning for reducing clutch starting are rubbed process, and the reliability of components is improved；Hydraulic section of output revolving speed can accurately 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
Input shaft 7, gear Q34, clutch KV35, gear B 6, gear D 10, axis A11 are crossed, then first be input in point confluence mechanism
Sun gear 12；Hydraulic pressure road power successively passes through hydraulic motor 13, axis F28, gear M27, gear P32, is input to gear ring 33.Two-way
Power successively passes through planet carrier 8, gear C 9, gear I18, clutch K after a point confluence mechanism is converged219, axis E22, gear
H17, gear F15, gear J20, final output shaft 21 output power.
Third 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, axis A11, then the first sun gear 12 being input in point confluence mechanism；
Hydraulic pressure road power successively passes through hydraulic motor 13, axis F28, gear M27, gear P32, is input to gear ring 33.Two-way power is dividing
After confluence mechanism is converged, successively pass through the second sun gear 30, gear N31, gear K24, clutch K323, axis E22, gear H17,
Gear F15, gear J20, final output shaft 21 output power.
Reverse gear pure hydraulic section it is identical as pure hydraulic section of power transmission route, simply by adjustment hydraulic pump 2 variable side
To the direction of change hydraulic motor 13.
It reverses gear I section of hydraulic machinery: in this mode, clutch KR5, clutch K219 engagements, engine power is by defeated
Enter axis 7, gear Q34, gear R37, clutch KR5, gear A 4, gear D 10, axis A11, first be input in point confluence mechanism
Sun gear 12；Hydraulic pressure road power passes through hydraulic motor 13, axis F28, gear M27, gear P32, is input to gear ring 33.Two-way power
After a point confluence mechanism is converged, successively pass through planet carrier 8, gear C 9, gear I18, clutch K219, axis E22, gear H17, tooth
F15, gear J20 are taken turns, final output shaft 21 outputs power.
The transmission device can realize that power changes section, when being connected between section, can first engage next section of clutch, then separate one
The clutch of section, that realizes power does not interrupt transmitting, guarantees not interrupting for power transmission, improves operating efficiency, and guarantee to shift gears
Comfort.
The shift logic of the transmission device is as shown in table 1.
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, curve
4 be the revolving speed of hydraulic pump, proportional to engine speed.The revolving speed of hydraulic motor constantly changes, to realize output revolving speed
Step-less adjustment.Curve 1 is pure hydraulic section of 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 with speed laws about modified speed as shown in figure 3, curve 1,2,3 respectively correspond it is pure hydraulic
Section, I section of hydraulic machinery and II section of hydraulic machinery.The torque capacity of output with speed laws about modified speed as shown in figure 4, curve 1,2,
3 respectively correspond pure hydraulic section, I section of hydraulic machinery and II section of hydraulic machinery.Efficiency curve as shown in figure 5, solid line be pure hydraulic section,
The efficiency curve that I section and II section of hydraulic machinery of hydraulic machinery, dotted line are 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 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 compound continuously variable transmittion of loading machine hydraulic machinery characterized by comprising hydraulic speed regulation loop is just falling
Mechanism divides confluence mechanism, hydraulic section of 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), and the hydraulic pump (2) is double
To variable pump；The hydraulic pump (2) and hydraulic motor (13) form closed hydraulic loop, close described in slippage pump (3) maintenance
The low pressure of formula hydraulic circuit, and control oil pressure is provided for the hydraulic pump (2)；
The Zheng Dao mechanism includes: 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) being supported on shell (1), axis B (36) and axis C (39)；
Power from engine is incoming by the input shaft (7), is connected gear Q (34) on the input shaft (7), the gear
Q (34) and the gear R (37) being connected on axis B (36) engagement, the gear R (37) and the gear S being connected on axis C (39)
(38) it engages, the hydraulic pump (2) and slippage pump (3) are connected with the axis C (39)；The drive end of the clutch KV (35) is solid
It is connected on gear Q (34), Partner is connected with the gear B (6), and 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) it engages, the gear D (10) is connected on axis 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 axis B (36), when clutch KR (5) combine,
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: that 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 gear C (9), is fixed with gear P (32) on the gear ring (33), second sun gear on the planet carrier (8)
(30) coaxial connected with gear N (31)；First sun gear (12) is fixed on axis A (11)；
The hydraulic section of fixed axis gear transmission mechanism includes: axis F (28), gear M (27), gear E (14), gear T (40), gear
L (25), clutch K1(26) and gear F (15)；The hydraulic motor (13) and axis F (28) connection are connected on axis F (28) with teeth
Wheel M (27) and gear E (14), the gear M (27) 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) engagement；The clutch K1(26) drive end and empty set
Gear L (25) on axis G (16) is affixed, and post-boost phase is connected with the axis G (16), is connected gear F (15) on axis G (16), when
The clutch K1(26) when combining, the gear L (25) can will be transmitted to gear F (15)；
I section of fixed axis gear transmission mechanism of the hydraulic machinery includes: gear C (9), gear I (18), clutch K2(19) and gear
H(17)；The gear C (9) is engaged with gear I (18), and gear H (17) is connected on axis E (22), and is engaged with gear F (15)；
Gear I (18) empty set is on axis E (22), the clutch K2(19) drive end and gear I (18) are connected, Partner with
Axis E (22) is connected；As the clutch K2(19) when combining, power can be transferred to axis E (22) by gear I (18)；
II section of fixed axis gear transmission mechanism of the 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 set is on axis E (22)；The clutch K3(23)
Drive end is connected on the gear K (24), and Partner and axis E (22) are connected；As the clutch K3(23) described when combining
Power can be transferred to axis 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)
It is engaged with gear F (15).
2. the compound continuously variable transmittion of loading machine hydraulic machinery as described in claim 1, which is characterized in that the stepless transmission
The drive shift of device includes pure hydraulic section and two hydro-mechanical segments:
As the clutch K1(26) and clutch K2(19) when engaging, be in pure hydraulic section: power is inputted by input shaft (7)
Afterwards, it is successively transmitted to hydraulic pump (2) by gear Q (34), gear R (37), gear S (38), hydraulic pump (2) gives power transfer
After hydraulic motor (13), then successively 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)；
When the clutch KV (35), clutch K2(19) when engaging, it is in hydraulic machinery I sections, mechanical output passes through input shaft
(7) it after inputting, is successively imported into point confluence mechanism by gear Q (34), clutch KV (35), gear B (6), gear D (10)
The first sun gear (12)；Hydraulic pressure road power successively passes through hydraulic motor (13), gear M (27), gear P (32), is input to tooth
It encloses (33)；Two-way power successively passes through planet carrier (8), gear C (9), gear I (18), clutch after a point confluence mechanism is converged
K2(19), gear H (17), gear F (15), gear J (20) are transferred to output shaft (21)；
When the clutch KV (35), clutch K3(23) when engaging, it is in hydraulic machinery II sections, mechanical output passes through input shaft
(7) after inputting, the first sun gear in point confluence mechanism successively is input to by gear Q (34), gear B (6), gear D (10)
(12)；Hydraulic pressure road power successively passes through hydraulic motor (13), gear M (27), gear P (32), is input to gear ring (33)；Two-way function
Rate successively passes through the second sun gear (30), gear N (31), gear K (24), clutch K after a point confluence mechanism is converged3(23)、
Gear H (17), gear F (15), gear J (20) are transferred to output shaft (21).
3. the compound continuously variable transmittion of loading machine hydraulic machinery as described in claim 1, which is characterized in that the stepless transmission
The reverse gear of device includes a reverse gear pure hydraulic section and a reverse gear hydro-mechanical segment:
As the clutch K1(26) and clutch K2(19) when engaging, the variable direction of hydraulic pump (2) is adjusted, hydraulic horse is changed
Up to the direction of (13), be at pure hydraulic section of reverse gear: power after input shaft (7) input, successively by gear Q (34),
Gear R (37), gear S (38) are transmitted to hydraulic pump (2), hydraulic pump (2) by power transfer to hydraulic motor (13) after, then successively
By being transferred to output shaft (21) to gear E (14), gear T (40), gear L (25), gear F (15) and gear J (20)；
When the clutch KR (5), clutch K2(19) when engaging, it is in reverse gear hydro-mechanical segment, mechanical output passes through input shaft
(7) it after inputting, is successively input in point confluence mechanism by gear Q (34), gear R (37), gear A (4), gear D (10)
First sun gear (12)；Hydraulic pressure road power is input to gear ring (32) by hydraulic motor (13), gear M (27), gear P (32)；
Two-way power successively passes through planet carrier (8) gear C (9), gear I (18), clutch K after a point confluence mechanism is converged2(19)、
Gear H (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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| CN108278348B (en) * | 2018-04-10 | 2020-02-04 | 北京理工大学 | Three-section type mechanical composite stepless transmission device for engineering machinery |
| CN109488740B (en) * | 2019-01-02 | 2024-09-24 | 石河子大学 | Single-row bipolar type hydraulic mechanical stepless speed changer |
| CN113137462B (en) * | 2021-05-18 | 2022-05-03 | 吉林大学 | Walking transmission device of working vehicle and control method thereof |
| 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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| DE102007018999A1 (en) * | 2007-04-21 | 2008-10-30 | Zf Friedrichshafen Ag | Power split transmission |
| KR101485619B1 (en) * | 2007-10-02 | 2015-01-22 | 젯트에프 프리드리히스하펜 아게 | Hydrostatic-mechanical power split transmission |
| DE102009045087B4 (en) * | 2009-09-29 | 2022-06-15 | Zf Friedrichshafen Ag | Transmission device with power split |
| DE102013204747A1 (en) * | 2013-03-19 | 2014-09-25 | Zf Friedrichshafen Ag | Transmission device with secondary coupled power split |
| CN205298454U (en) * | 2015-11-11 | 2016-06-08 | 潍柴动力股份有限公司 | Hydraulic pressure machinery infinitely variable transmission for loader |
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