CN105946561A - Power dividing-converging type high-horsepower tractor transmission device - Google Patents
Power dividing-converging type high-horsepower tractor transmission device Download PDFInfo
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- CN105946561A CN105946561A CN201610324769.8A CN201610324769A CN105946561A CN 105946561 A CN105946561 A CN 105946561A CN 201610324769 A CN201610324769 A CN 201610324769A CN 105946561 A CN105946561 A CN 105946561A
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60K—ARRANGEMENT OR MOUNTING OF PROPULSION UNITS OR OF TRANSMISSIONS IN VEHICLES; ARRANGEMENT OR MOUNTING OF PLURAL DIVERSE PRIME-MOVERS IN VEHICLES; AUXILIARY DRIVES FOR VEHICLES; INSTRUMENTATION OR DASHBOARDS FOR VEHICLES; ARRANGEMENTS IN CONNECTION WITH COOLING, AIR INTAKE, GAS EXHAUST OR FUEL SUPPLY OF PROPULSION UNITS IN VEHICLES
- B60K17/00—Arrangement or mounting of transmissions in vehicles
- B60K17/04—Arrangement or mounting of transmissions in vehicles characterised by arrangement, location, or kind of gearing
- B60K17/06—Arrangement or mounting of transmissions in vehicles characterised by arrangement, location, or kind of gearing of change-speed gearing
- B60K17/08—Arrangement or mounting of transmissions in vehicles characterised by arrangement, location, or kind of gearing of change-speed gearing of mechanical type
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60K—ARRANGEMENT OR MOUNTING OF PROPULSION UNITS OR OF TRANSMISSIONS IN VEHICLES; ARRANGEMENT OR MOUNTING OF PLURAL DIVERSE PRIME-MOVERS IN VEHICLES; AUXILIARY DRIVES FOR VEHICLES; INSTRUMENTATION OR DASHBOARDS FOR VEHICLES; ARRANGEMENTS IN CONNECTION WITH COOLING, AIR INTAKE, GAS EXHAUST OR FUEL SUPPLY OF PROPULSION UNITS IN VEHICLES
- B60K17/00—Arrangement or mounting of transmissions in vehicles
- B60K17/34—Arrangement or mounting of transmissions in vehicles for driving both front and rear wheels, e.g. four wheel drive vehicles
- B60K17/344—Arrangement or mounting of transmissions in vehicles for driving both front and rear wheels, e.g. four wheel drive vehicles having a transfer gear
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60K—ARRANGEMENT OR MOUNTING OF PROPULSION UNITS OR OF TRANSMISSIONS IN VEHICLES; ARRANGEMENT OR MOUNTING OF PLURAL DIVERSE PRIME-MOVERS IN VEHICLES; AUXILIARY DRIVES FOR VEHICLES; INSTRUMENTATION OR DASHBOARDS FOR VEHICLES; ARRANGEMENTS IN CONNECTION WITH COOLING, AIR INTAKE, GAS EXHAUST OR FUEL SUPPLY OF PROPULSION UNITS IN VEHICLES
- B60K6/00—Arrangement or mounting of plural diverse prime-movers for mutual or common propulsion, e.g. hybrid propulsion systems comprising electric motors and internal combustion engines ; Control systems therefor, i.e. systems controlling two or more prime movers, or controlling one of these prime movers and any of the transmission, drive or drive units Informative references: mechanical gearings with secondary electric drive F16H3/72; arrangements for handling mechanical energy structurally associated with the dynamo-electric machine H02K7/00; machines comprising structurally interrelated motor and generator parts H02K51/00; dynamo-electric machines not otherwise provided for in H02K see H02K99/00
- B60K6/20—Arrangement or mounting of plural diverse prime-movers for mutual or common propulsion, e.g. hybrid propulsion systems comprising electric motors and internal combustion engines ; Control systems therefor, i.e. systems controlling two or more prime movers, or controlling one of these prime movers and any of the transmission, drive or drive units Informative references: mechanical gearings with secondary electric drive F16H3/72; arrangements for handling mechanical energy structurally associated with the dynamo-electric machine H02K7/00; machines comprising structurally interrelated motor and generator parts H02K51/00; dynamo-electric machines not otherwise provided for in H02K see H02K99/00 the prime-movers consisting of electric motors and internal combustion engines, e.g. HEVs
- B60K6/22—Arrangement or mounting of plural diverse prime-movers for mutual or common propulsion, e.g. hybrid propulsion systems comprising electric motors and internal combustion engines ; Control systems therefor, i.e. systems controlling two or more prime movers, or controlling one of these prime movers and any of the transmission, drive or drive units Informative references: mechanical gearings with secondary electric drive F16H3/72; arrangements for handling mechanical energy structurally associated with the dynamo-electric machine H02K7/00; machines comprising structurally interrelated motor and generator parts H02K51/00; dynamo-electric machines not otherwise provided for in H02K see H02K99/00 the prime-movers consisting of electric motors and internal combustion engines, e.g. HEVs characterised by apparatus, components or means specially adapted for HEVs
- B60K6/36—Arrangement or mounting of plural diverse prime-movers for mutual or common propulsion, e.g. hybrid propulsion systems comprising electric motors and internal combustion engines ; Control systems therefor, i.e. systems controlling two or more prime movers, or controlling one of these prime movers and any of the transmission, drive or drive units Informative references: mechanical gearings with secondary electric drive F16H3/72; arrangements for handling mechanical energy structurally associated with the dynamo-electric machine H02K7/00; machines comprising structurally interrelated motor and generator parts H02K51/00; dynamo-electric machines not otherwise provided for in H02K see H02K99/00 the prime-movers consisting of electric motors and internal combustion engines, e.g. HEVs characterised by apparatus, components or means specially adapted for HEVs characterised by the transmission gearings
- B60K6/365—Arrangement or mounting of plural diverse prime-movers for mutual or common propulsion, e.g. hybrid propulsion systems comprising electric motors and internal combustion engines ; Control systems therefor, i.e. systems controlling two or more prime movers, or controlling one of these prime movers and any of the transmission, drive or drive units Informative references: mechanical gearings with secondary electric drive F16H3/72; arrangements for handling mechanical energy structurally associated with the dynamo-electric machine H02K7/00; machines comprising structurally interrelated motor and generator parts H02K51/00; dynamo-electric machines not otherwise provided for in H02K see H02K99/00 the prime-movers consisting of electric motors and internal combustion engines, e.g. HEVs characterised by apparatus, components or means specially adapted for HEVs characterised by the transmission gearings with the gears having orbital motion
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60K—ARRANGEMENT OR MOUNTING OF PROPULSION UNITS OR OF TRANSMISSIONS IN VEHICLES; ARRANGEMENT OR MOUNTING OF PLURAL DIVERSE PRIME-MOVERS IN VEHICLES; AUXILIARY DRIVES FOR VEHICLES; INSTRUMENTATION OR DASHBOARDS FOR VEHICLES; ARRANGEMENTS IN CONNECTION WITH COOLING, AIR INTAKE, GAS EXHAUST OR FUEL SUPPLY OF PROPULSION UNITS IN VEHICLES
- B60K6/00—Arrangement or mounting of plural diverse prime-movers for mutual or common propulsion, e.g. hybrid propulsion systems comprising electric motors and internal combustion engines ; Control systems therefor, i.e. systems controlling two or more prime movers, or controlling one of these prime movers and any of the transmission, drive or drive units Informative references: mechanical gearings with secondary electric drive F16H3/72; arrangements for handling mechanical energy structurally associated with the dynamo-electric machine H02K7/00; machines comprising structurally interrelated motor and generator parts H02K51/00; dynamo-electric machines not otherwise provided for in H02K see H02K99/00
- B60K6/20—Arrangement or mounting of plural diverse prime-movers for mutual or common propulsion, e.g. hybrid propulsion systems comprising electric motors and internal combustion engines ; Control systems therefor, i.e. systems controlling two or more prime movers, or controlling one of these prime movers and any of the transmission, drive or drive units Informative references: mechanical gearings with secondary electric drive F16H3/72; arrangements for handling mechanical energy structurally associated with the dynamo-electric machine H02K7/00; machines comprising structurally interrelated motor and generator parts H02K51/00; dynamo-electric machines not otherwise provided for in H02K see H02K99/00 the prime-movers consisting of electric motors and internal combustion engines, e.g. HEVs
- B60K6/42—Arrangement or mounting of plural diverse prime-movers for mutual or common propulsion, e.g. hybrid propulsion systems comprising electric motors and internal combustion engines ; Control systems therefor, i.e. systems controlling two or more prime movers, or controlling one of these prime movers and any of the transmission, drive or drive units Informative references: mechanical gearings with secondary electric drive F16H3/72; arrangements for handling mechanical energy structurally associated with the dynamo-electric machine H02K7/00; machines comprising structurally interrelated motor and generator parts H02K51/00; dynamo-electric machines not otherwise provided for in H02K see H02K99/00 the prime-movers consisting of electric motors and internal combustion engines, e.g. HEVs characterised by the architecture of the hybrid electric vehicle
- B60K6/44—Series-parallel type
- B60K6/445—Differential gearing distribution type
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60K—ARRANGEMENT OR MOUNTING OF PROPULSION UNITS OR OF TRANSMISSIONS IN VEHICLES; ARRANGEMENT OR MOUNTING OF PLURAL DIVERSE PRIME-MOVERS IN VEHICLES; AUXILIARY DRIVES FOR VEHICLES; INSTRUMENTATION OR DASHBOARDS FOR VEHICLES; ARRANGEMENTS IN CONNECTION WITH COOLING, AIR INTAKE, GAS EXHAUST OR FUEL SUPPLY OF PROPULSION UNITS IN VEHICLES
- B60K6/00—Arrangement or mounting of plural diverse prime-movers for mutual or common propulsion, e.g. hybrid propulsion systems comprising electric motors and internal combustion engines ; Control systems therefor, i.e. systems controlling two or more prime movers, or controlling one of these prime movers and any of the transmission, drive or drive units Informative references: mechanical gearings with secondary electric drive F16H3/72; arrangements for handling mechanical energy structurally associated with the dynamo-electric machine H02K7/00; machines comprising structurally interrelated motor and generator parts H02K51/00; dynamo-electric machines not otherwise provided for in H02K see H02K99/00
- B60K6/20—Arrangement or mounting of plural diverse prime-movers for mutual or common propulsion, e.g. hybrid propulsion systems comprising electric motors and internal combustion engines ; Control systems therefor, i.e. systems controlling two or more prime movers, or controlling one of these prime movers and any of the transmission, drive or drive units Informative references: mechanical gearings with secondary electric drive F16H3/72; arrangements for handling mechanical energy structurally associated with the dynamo-electric machine H02K7/00; machines comprising structurally interrelated motor and generator parts H02K51/00; dynamo-electric machines not otherwise provided for in H02K see H02K99/00 the prime-movers consisting of electric motors and internal combustion engines, e.g. HEVs
- B60K6/50—Architecture of the driveline characterised by arrangement or kind of transmission units
- B60K6/54—Transmission for changing ratio
- B60K6/543—Transmission for changing ratio the transmission being a continuously variable transmission
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60Y—INDEXING SCHEME RELATING TO ASPECTS CROSS-CUTTING VEHICLE TECHNOLOGY
- B60Y2200/00—Type of vehicle
- B60Y2200/20—Off-Road Vehicles
- B60Y2200/22—Agricultural vehicles
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60Y—INDEXING SCHEME RELATING TO ASPECTS CROSS-CUTTING VEHICLE TECHNOLOGY
- B60Y2300/00—Purposes or special features of road vehicle drive control systems
- B60Y2300/70—Control of gearings
- B60Y2300/74—Reducing shift shocks
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
- Y02T10/00—Road transport of goods or passengers
- Y02T10/60—Other road transportation technologies with climate change mitigation effect
- Y02T10/62—Hybrid vehicles
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- Structure Of Transmissions (AREA)
Abstract
The invention discloses a power dividing-converging type high-horsepower tractor transmission device which comprises a front axle, a rear axle, a gear transfer case, an electromechanical compound transmission system and a power output transmission case. The electromechanical compound transmission system comprises an engine, a first motor, a second motor, a power distributor, a planetary reducer and a power integrated piece. The power integrated piece is connected with an input shaft of the gear transfer case through an external engagement gear. A rear output shaft of the gear transfer case is connected with the rear axle. A front output shaft of the gear transfer case is connected with the front axle. An output shaft of the engine is connected with the power output transmission case sequentially through an elastic coupler, the first motor, the power distributor and a clutch. According to the power dividing-converging type high-horsepower tractor transmission device, the power of the engine is divided at the input end and converged on a wheel driving shaft at the output end, stepless speed change and compound driving of two power flows can be achieved, and the power dividing-converging type high-horsepower tractor transmission device has the advantages of being simple in transmission structure, small in occupied space, high in transmission efficiency, low in emission amount, low in oil consumption and easy to operate.
Description
Technical field
The invention belongs to agricultural machinery technological field, be specifically related to a kind of power dividing and converge formula driving device for tractor.
Background technology
nullThe actuating device of China's agricultural traction engine particularly big-powered tractor uses the change speed gear box of gear type mostly at present，When utilizing tractor to plough，Need low travel speed and big output moment of torsion，Tractor is on road surface during transport driving，Need relatively high travel speed and little output moment of torsion，For adapting to the frequent variation of external load and stroke resistance，Change speed gear box need can be in good time change rotating speed and moment of torsion，This typically requires the gearshift row increasing change speed gear box，The structure necessarily making change speed gear box is complicated and heavy，And though the static pressure transmission mode using hydraulic pump to add motor can realize stable infinitely variable speeds，But it is relatively low to there is transmission efficiency、The problems such as element cost is high，But it is short to there is cruising time in pure motorized motions、The shortcomings such as charging inconvenience，For big-powered tractor，It is big to there is volume in jumbo accumulator、Heavy Weight、High in cost of production problem；And the drive system using electromotor, electromotor, motor, change speed gear box to be sequentially connected in series setting can be applied on big-powered tractor, but the power that electromotor sends first is transferred to electric energy by electromotor, mechanical energy is transferred to again by motor, there is twice energy conversion in whole actuating device, cause drive inefficient, simultaneously because electromotor is directly connected to electromotor, generator speed is low and motor installed power is big, equally exist motor volume and weight is big, car load difficulty in arrangement, the problems such as cost is high.
nullNow with automobile production producer start to develop the change speed gear box of power dividing，The structure of change speed gear box can be simplified，Realize stepless shift function，The Prius hybrid power system (THS) of Toyota Company is exactly the infinitely variable speed transmission using power split formula，And it has been successfully applied to automotive field，THS actuating device is according to the operating mode of automobile，There is multiple-working mode，System controls complexity，Its drive system mainly meets the automobile control needs to direction of advance speed，Prius automobile is when reversing，Tail-off，Storage battery energy is used to carry out pure electronic reversing，When this is mainly due to reversing，Motor (gear ring) reversion of Prius，If electromotor is still in work，I.e. planet carrier is rotating forward，According to planetary mechanism differential principle，The speed that electromotor (sun gear) rotates forward can be made faster，Exceed the rated speed of permission，Affect the service life of gear and bearing，Therefore Prius reversing uses electric-only mode，And back-up speed is difficult to too fast，The all parts that can make planetary mechanism is operated in the restriction range of speeds.
And tractor operating mode is changeable, Function Class is various, work under bad environment, travel speed and the output pull strength of tractor will be accurately controlled in direction of advance and astern direction, the operating mode of reversing long-time for tractor, if employing electric-only mode, then need the biggest accumulator capacity, cause car load layout difficulty, therefore the THS actuating device of Prius is to be not suitable for using on tractor；In addition Prius automobile is when urban district travels, meeting frequently braking and acceleration, Brake energy recovery is considerable, additionally for vehicle starting and astern condition, all uses pure electronic mode to travel, therefore Prius automobile is equipped with a larger capacity accumulator, and tractor is often at field work, travel speed is low, and Brake energy recovery is limited, and tractor moves forward and backward and is both needed to externally export pull strength, it is therefore desirable to existing actuating device is improved.
Summary of the invention
For solving the problems referred to above, the invention discloses a kind of power dividing and converge formula big-powered tractor actuating device, engine power is shunted at input, meet on wheel drive shaft at outfan, tractor is made all to utilize the power of electromotor to be driven when moving forward and backward, by suitable control strategy, can realize tractor has wider stepless speed regulation scope and bigger pull strength moving forward and backward on direction, driving means has drive mechanism simple in construction, easy and simple to handle, transmission efficiency advantages of higher, the operating point of electromotor can be improved simultaneously, improve the fuel economy of electromotor and improve emission performance.
For reaching above-mentioned purpose, technical scheme is as follows:
nullA kind of power dividing converges formula big-powered tractor actuating device，It is characterized in that: include propons、Back axle、Gear transfer box、Electromechanical combined drive system、Power output transmission case、Yielding coupling，Described electromechanical combined drive system includes electromotor、A number motor、No. two motors、Power divider、Planetary reduction gear and power set part，Described power divider、Planetary reduction gear is gear structure，Described power divider has three to connect end，It is respectively the sun gear one of planetary gears、Gear ring one and planet carrier one，Described planet carrier one is connected with the output shaft of electromotor，Gear ring one is connected with a motor power shaft，Sun gear one is connected with power set part，Described planetary reduction gear has two secondary connection ends and a fixing end，Its first secondary end that connects corresponds to sun gear two，It is connected with the output shaft of No. two motors，Second secondary connection end corresponds to gear ring two and is connected with power set part，Fixing end corresponds to planet carrier two and maintains static，Power set part is connected with the gear ring two of planetary reduction gear，It is connected with the sun gear one of power divider by external gear pump again，By power set part general power input gear transfer case，The rear output shaft of gear transfer box is connected with back axle，Front output shaft is connected with propons，The output shaft of described electromotor passes sequentially through yielding coupling、A number motor、Power divider，It is connected with power output transmission case by clutch again，Described electromotor、A number motor and power divider are coaxially arranged，No. two motors、Planetary reduction gear and power set part are coaxially arranged，The described power output transmission case other end is provided with power output shaft.
As a modification of the present invention, described power divider is binary single planetary gear.
As a modification of the present invention, described planetary reducer is the single planetary gear of single-degree-of-freedom.
As a modification of the present invention, described electromotor is diesel engine, and a described motor is magneto alternator, and described No. two motors are permasyn morot.
The invention has the beneficial effects as follows:
nullA kind of power dividing of the present invention converges formula big-powered tractor actuating device，The transmission mode converged again after using power dividing，By power divider, engine power is shunted: a part flows to Electric Drive part，Another part flows to mechanical driving part，Two parts power finally meets on wheel drive shaft，Jointly drive walking，By the conservative control of control system，Enable the working condition according to tractor，It is electrical power and mechanical output the driving power reasonable distribution of electromotor，Make two-way transmission collaborative work，Realizing while stepless shift function steadily realizes，The operating point of electromotor can be improved，Thus improve working performance and the fuel economy of tractor，Motor installed power is little simultaneously，It is prone to motor structure on tractor arrange and install，Simultaneously take account of tractor to exist and move forward and backward and be required to the operating mode of work，Electromotor and motor have been carried out specific placement，Make tractor when retreating，Engine power is still used to carry out driven by power，Ensure that tractor still can be with stepless speed regulation and given play to suitable pull strength when reversing，Guarantee that tractor advances、Direction of retreat reliably working.
Accompanying drawing explanation
Fig. 1 is embodiments of the invention schematic diagram.
Fig. 2 is the structural representation of power divider of the present invention.
Fig. 3 is the structural representation of the planetary reduction gear described in this.
Fig. 4 is low-speed tractor shelves electric power distribution ratio of the present invention.
Fig. 5 is tractor top gear electric power distribution ratio of the present invention.
Fig. 6 is low-speed tractor shelves pull strength characteristic curve of the present invention.
Fig. 7 is tractor top gear pull strength characteristic curve of the present invention.
Fig. 8 is the present invention electromechanical combined drive system astern condition planetary structure nomographic chart.
Fig. 9 is Prius automobile THS system astern condition planetary mechanism nomographic chart of the present invention.
Reference numerals list:
1, propons, 2, electromotor, 3, yielding coupling, 4, engine output shaft, 5, a number motor, 6, power divider, 7, power set part, 8, planetary reduction gear, 9, No. two motors, 10, clutch, 11, back axle, 12, power output transmission case, 13, power output shaft, 14, rear output shaft, 15, gear transfer box, 16, front output shaft, 18, external gear pump, 61, sun gear one, 62, planetary gear one, 63, gear ring one, 64, planet carrier one, 81, gear ring two, 82, planet carrier two, 83, planetary gear two, 84, sun gear two.
Detailed description of the invention
Below in conjunction with the accompanying drawings and detailed description of the invention, it is further elucidated with the present invention, it should be understood that following detailed description of the invention is merely to illustrate the present invention rather than limits the scope of the present invention.It should be noted that the word "front", "rear" used in describing below, "left", "right", "up" and "down" refer to the direction in accompanying drawing, word " interior " and " outward " refer respectively to the direction towards or away from particular elements geometric center.
nullAs shown in Figure 1，A kind of power dividing of the present invention converges formula big-powered tractor actuating device，Comprise propons 1、Back axle 11、Gear transfer box 15、Electromechanical combined drive system、Power output transmission case 12，Electromechanical combined drive system includes electromotor 2、A number motor 5、No. two motors 9、Power divider 6、Planetary reduction gear 8 and power set part 7，A number motor 5 is configured to electromotor，No. two motors 9 are configured to motor，In space layout，Described electromotor 2、A number motor 5 and power divider 6 are coaxially arranged，No. two motors 9、Planetary reduction gear 8 and power set part 7 are coaxially arranged，By 7 general power input gear transfer cases 15 of power set part，The rear output shaft 14 of gear transfer box 15 is connected with back axle 11，Front output shaft 16 is connected with propons 1，The output shaft 4 of electromotor is after the interconnection function through yielding coupling 3，Sequentially pass through a motor 5、Power divider 6，It is connected with the power output transmission case 12 of tractor by clutch 10 again，Power output transmission case 12 other end is provided with power output shaft 13，By regulation power output transmission case 12 speed ratio，The demand of power output shaft 13 different operating rotating speed can be realized.
A kind of power dividing of the present invention converges formula big-powered tractor actuating device, power divider 6 comprises sun gear 1, planetary gear 1, gear ring 1 and planet carrier one 64 three and connects end, as shown in Figure 2: power divider 6 is the simple planetary arrangement of two-freedom, the first connection end is planet carrier 1 and is connected with the output shaft 4 of electromotor；Its second connection end is configured to planetary gear ring 1 and the power shaft with a motor 5 is connected；Its 3rd connection end is configured to sun gear 1 and is connected with power set part 7, and the effect of power divider 6 is that the output of electromotor 2 is divided into electrical power and mechanical output two parts, and externally exports.
A kind of power dividing of the present invention converges formula big-powered tractor actuating device, planetary reduction gear 8 is the simple planetary arrangement of single-degree-of-freedom, comprise gear ring 2 81, planet carrier 2 82, planetary gear 2 83 and sun gear 2 84, described planetary reduction gear 8 has two secondary ends and fixing ends of connecting, as shown in Figure 3: its first secondary end that connects is sun gear 2 84 and the output shaft with No. two motors 9 is connected；Its second secondary end that connects is configured to gear ring 2 81 and is connected with power set part 7；Its fixing end for planet carrier 2 82 and maintains static.
Power set part 7 is connected with the gear ring 2 81 of planetary reduction gear, it is connected with the sun gear 1 of power divider 6 by external gear pump 18 again, the effect of power set part 7 is electrical power and mechanical output to be collected, and sends the follow-up drive mechanism of tractor to.
nullA kind of power dividing of the present invention converges formula big-powered tractor actuating device，Specific works principle is as follows: the power of electromotor 2 output initially enters power divider 6 through engine output shaft 4，By the shunting action of power divider 6, the power (rotating speed and moment of torsion) of electromotor 2 is shunted: a part of engine power flows to a motor 5 through the gear ring 1 of power divider，This part is Electric Drive，A motor 5 is driven to generate electricity by gear ring 1，The electrical power sent is after motor module controller，Output is to No. two motors 9，By No. two motors 9, external rotation is done work，Electric energy is become mechanical energy，Export on the sun gear 2 84 of planetary reduction gear 8，Exported by gear ring 2 81 again，The engine power of another part flows to the sun gear 1 of power divider 6，For machine driving，Two-part power finally meets at power set part 7，Pass to follow-up gear transfer box 15，By rear output shaft 14 and front output shaft 16, general power distributed to back axle 11 and propons 1，Realize the driving walking of tractor，Use height quick change gear lock unit，Tractor can be made to carry out farm work and II grade (top gear) carries out hauling operation at I grade (bottom gear)，Control by motor module controller，The output speed of controlled power transmission，So that the rotating speed of whole system outfan and moment of torsion consecutive variations，Realize stepless shift function smooth transition，Break will not occur in speed-change process.
Working condition according to tractor, under the conservative control of electric machine control system, two-way transmission collaborative work can be made, the power making electromotor obtains an equitable breakdown, tractor shows the pulling figure of excellence, such as Fig. 4, 5 show electrical power and the mechanical output power sharing ratio schematic diagram under the different travel speed of tractor, Fig. 6, 7 is the pull strength characteristic curve of tractor, with I grade of (bottom gear of tractor, less than 20km/h) work as a example by explanation, the advance speed of I grade of working area of tractor is 0-20km/h, during tractor starting, need relatively large driving force, engine power is mainly converted to electrical power, this makes full use of the characteristic of motor low-speed big, carry out the driven by power of high pulling torque, play power-actuated advantage；nullBelow 6km/h (this is the ploughing operating rate that tractor is conventional) shown in Fig. 6，Tractor can give play to maximum drawbar pull，Along with improving constantly of tractor speed，Required driving force reduces，Under the regulation of electric machine control system，Electrical power is made to taper into and mechanical output becomes larger，As shown in Figure 4 and Figure 6，When speed is 6km/h，Electrical power becomes 73%，Mechanical output becomes 27%，When speed increases to 15km/h，Electrical power is reduced to 27%，Mechanical output increases to 73%，Pull strength gradually reduces，When reaching the max speed 20km/h，It is only machine driving，Power percentage is smooth to be changed，Both the efficient feature of machinery driving efficiency had been made full use of，Pull strength also reduces to minima simultaneously，Meet vehicle and travel theory，It is 0～-15km/h that tractor retreats speed，During retrogressing，Engine power becomes electrical power by electromotor，Motor is made to invert，Machine driving is reactive power，System effectiveness has decline，But still stepless speed regulation can be realized and given play to relatively large traction，Such as Fig. 6，Ensure that tractor can be in retrogressing duty for a long time，Fig. 5 and Fig. 7 is power-division ratios and the pull strength characteristic curve of II grade of traffic zone of tractor，Its feature is similar with I grade of working area，And principle is identical.
The present invention has carried out special arrangement to the installation site of electromotor (motor 5) Yu motor (No. two motors 9), during reversing, generator speed can be prevented too high, the planetary mechanism nomographic chart being illustrated in figure 8 in the present invention, inverted by motor, realize astern condition, now power set part 7 inverts, i.e. sun gear 1 reversion of power divider 6, and planet carrier (being connected with the output shaft of electromotor) can only rotate forward, structure due to planet circular system, relation between 3 part rotating speeds is always a straight line with gear ratio as proportionate relationship, therefore the gear ring of electromotor speedup for a moment, but increasing degree is less, still in the admissible range of speeds, therefore can realize being driven vehicle backing by engine power；And during Prius reversing automobile, as used engine power to be driven, the then sun gear rotating speed meeting superelevation of electromotor, Fig. 9 is Prius automobile THS system planetary mechanism nomographic chart, dotted line position in figure, the sun gear of electromotor exceeds the speed limit, therefore Prius reversing automobile, use electric-only mode, make (planet carrier rotating speed is zero) to stall, and speed is difficult to too fast, just can make the sun gear rotating speed of electromotor within allowing the range of speeds, solid line position as shown in Figure 9, THS system is unsuitable for tractor and uses.
Due to for mechanical-electric compound drive, therefore the motor installed power under this kind of drive can reduce compared with series model, and motor is high-speed electric expreess locomotive, by improving the rotating speed of motor, the volume and weight that can make motor is significantly reduced, therefore this use type of drive is used, it is easy to accomplish motor structure on big-powered tractor is arranged and installed.
Electromotor 2 of the present invention is diesel engine, better economy, and fault is few, and maintenance is easy, reliable operation, sturdy and durable, the life-span is long, and a described motor 5 uses magneto alternator, described No. two motors 9 to use permasyn morot, volume is little, is lost low, and efficiency is high, saves the energy.
nullA kind of power dividing of the present invention converges formula big-powered tractor actuating device，The transmission mode converged again after using power dividing，By power divider, engine power is shunted: a part flows to Electric Drive part，Another part flows to mechanical driving part，Two parts power finally meets on wheel drive shaft，Jointly drive walking，By the conservative control of control system，Enable the working condition according to tractor，It is electrical power and mechanical output the driving power reasonable distribution of electromotor，Make two-way transmission collaborative work，Realizing while stepless shift function steadily realizes，The operating point of electromotor can be improved，Thus improve working performance and the fuel economy of tractor，Motor installed power is little simultaneously，It is prone to motor structure on tractor arrange and install，Simultaneously take account of tractor to exist and move forward and backward and be required to the operating mode of work，Electromotor and motor have been carried out specific placement，Make tractor when retreating，Engine power is still used to carry out driven by power，Ensure that tractor still can be with stepless speed regulation and given play to suitable pull strength when reversing，Guarantee that tractor advances、Direction of retreat reliably working.
A kind of power dividing of the present invention converges formula big-powered tractor actuating device, the drive system transmission efficiency that before overcoming, tractor is arranged in series is the highest, the shortcoming that motor installed power is big, actuating device of the present invention, engine power is shunted at input, meet on wheel drive shaft at outfan, tractor is made all to utilize the power of electromotor to be driven when moving forward and backward, the overall efficiency of power transmission is higher, reach more than 92%, both ensure that transmission efficiency, installing space and weight of equipment can be reduced again, speed change is steady, tractor has wider stepless speed regulation scope and bigger pull strength moving forward and backward on direction, improve work efficiency.
Above-described embodiment limits the present invention, the technical scheme that the mode of all employing equivalents or equivalent transformation is obtained the most in any form, all falls within protection scope of the present invention.
Claims (4)
- null1. a power dividing converges formula big-powered tractor actuating device，It is characterized in that: include propons、Back axle、Gear transfer box、Electromechanical combined drive system、Power output transmission case、Yielding coupling，Described electromechanical combined drive system includes electromotor、A number motor、No. two motors、Power divider、Planetary reduction gear and power set part，Described power divider、Planetary reduction gear is gear structure，Described power divider has three to connect end，It is respectively the sun gear one of planetary gears、Gear ring one and planet carrier one，Described planet carrier one is connected with the output shaft of electromotor，Gear ring one is connected with a motor power shaft，Sun gear one is connected with power set part by external gear pump，Described planetary reduction gear has two secondary connection ends and a fixing end，Its first secondary end that connects corresponds to sun gear two，It is connected with the output shaft of No. two motors，Second secondary connection end corresponds to gear ring two and is connected with power set part，Fixing end corresponds to planet carrier two and maintains static，Power set part is connected with the gear ring two of planetary reduction gear，It is connected with the sun gear one of power divider by external gear pump again，By power set part general power input gear transfer case，The rear output shaft of gear transfer box is connected with back axle，Front output shaft is connected with propons，The output shaft of described electromotor passes sequentially through yielding coupling、A number motor、Power divider，It is connected with power output transmission case by clutch again，Described electromotor、A number motor and power divider are coaxially arranged，No. two motors、Planetary reduction gear and power set part are coaxially arranged，The described power output transmission case other end is provided with power output shaft.
- A kind of power dividing the most according to claim 1 converges formula big-powered tractor actuating device, it is characterised in that: described power divider is binary single planetary gear.
- A kind of power dividing the most according to claim 1 converges formula big-powered tractor actuating device, it is characterised in that: described planetary reducer is the single planetary gear of single-degree-of-freedom.
- A kind of power dividing the most according to claim 1 converges formula big-powered tractor actuating device, it is characterised in that: described electromotor is diesel engine, and a described motor is magneto alternator, and described No. two motors are permasyn morot.
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| CN201610324769.8A CN105946561A (en) | 2016-05-17 | 2016-05-17 | Power dividing-converging type high-horsepower tractor transmission device |
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| CN201610324769.8A CN105946561A (en) | 2016-05-17 | 2016-05-17 | Power dividing-converging type high-horsepower tractor transmission device |
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Application publication date: 20160921 |