CN102069702B - Electric drive earthmover travelling driving device - Google Patents
Electric drive earthmover travelling driving device Download PDFInfo
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- CN102069702B CN102069702B CN 201010616656 CN201010616656A CN102069702B CN 102069702 B CN102069702 B CN 102069702B CN 201010616656 CN201010616656 CN 201010616656 CN 201010616656 A CN201010616656 A CN 201010616656A CN 102069702 B CN102069702 B CN 102069702B
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- 238000000429 assembly Methods 0.000 claims abstract description 4
- 230000002457 bidirectional effect Effects 0.000 claims description 33
- 230000005540 biological transmission Effects 0.000 abstract description 7
- 238000006243 chemical reaction Methods 0.000 abstract description 6
- 238000005516 engineering process Methods 0.000 abstract description 6
- 238000000926 separation method Methods 0.000 abstract description 2
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Abstract
电传动推土机行走驱动装置属工程机械技术领域，本发明由发动机、发电机、功率逆变器、三个电动机、三组双向离合器总成和差速转向机构组成，双向离合器总成包括前离合器和后离合器，每个电动机的输出轴与相应的双向离合器的输入轴相联，双向离合器总成与差速转向机构相联，每个电动机与发电机相联，采用变频驱动技术，通过控制双向离合器的结合分离实现控制直线行走与转弯时的功率分配。本发明部件少、结构紧凑、传动效率高、控制简单、造价低廉。
The walking driving device of an electric transmission bulldozer belongs to the technical field of construction machinery. The invention consists of an engine, a generator, a power inverter, three electric motors, three sets of two-way clutch assemblies and a differential steering mechanism. The two-way clutch assembly includes a front clutch and a Rear clutch, the output shaft of each motor is connected with the input shaft of the corresponding two-way clutch, the two-way clutch assembly is connected with the differential steering mechanism, each motor is connected with the generator, and the frequency conversion drive technology is used to control the two-way clutch The combination and separation of control realizes the power distribution when walking in a straight line and turning. The invention has few parts, compact structure, high transmission efficiency, simple control and low cost.
Description
Technical field
The invention belongs to technical field of engineering machinery, be specifically related to a kind of new-type electric drive earthmover travelling driving device, it adopts three groups of bidirectional clutches, utilizes frequency conversion drive and control technology to realize the continuous turning of differential screw and steering device.
Background technology
In existing electric transmission bulldozer travel driving system, general travel driving system is generally finished jointly by two three phase alternating current motors and a HM Hydraulic Motor, and by two motor-driven, HM Hydraulic Motor is not worked this moment when the bulldozer straight line moving.When turning, drive HM Hydraulic Motor with hydraulic efficiency pressure system and carry out differential steering.
And self shortcoming is arranged in the above-mentioned travel driving system.Use hydraulic efficiency pressure system and HM Hydraulic Motor to turn to, the cost of complete machine is increased, the structure complicated is unfavorable for applying of electric transmission bulldozer.HM Hydraulic Motor exists shortcomings in real work.The first, the potential faults of hydraulic pressure be difficult for to find, so that working environment requires is high, can not be in overload and extreme environment work, otherwise damage easily.The second, the use cost of HM Hydraulic Motor is higher, comprises the cost of motor itself and the cost of maintenance etc., and its maintenance cost improves along with the degree of precision of motor thereupon.The 3rd, in load changing, transmitting ratio is unstable, can cause thus walking arrangement impact load to occur at work, affects service life.The weak points such as also there is leakage of oil in HM Hydraulic Motor in addition, and the serviceability temperature influence is larger.So in a lot of operating modes and be not suitable for using HM Hydraulic Motor.
Summary of the invention
The object of the invention is to: for higher this problem of hydraulic system structure more complicated, cost of electric transmission bulldozer use.Now adopt a kind of new walking driver module, namely three groups of double-clutchs are controlled straight-line travelling and turning, adopt frequency conversion drive and control technology, replace the power input of hydraulic efficiency pressure system and HM Hydraulic Motor, be used for driving the Power Train of bulldozer, thereby make bulldozer can carry out continuous turning.
Above-mentioned purpose of the present invention is achieved through the following technical solutions, and accompanying drawings is as follows:
The present invention is by driving engine 7, electrical generator 6, power inverter 5, electrical motor, the bidirectional clutch assembly, differential screw and steering device forms, electrical motor wherein is three, the bidirectional clutch assembly is three groups, each electrical motor all with power inverter 5, electrical generator 6 and driving engine 7 coupled in series, first group of bidirectional clutch assembly is by gear I1, front clutch IA, axle I2, rear power-transfer clutch IB, gear II3 and electric motor I 4 form, its axis I2 respectively with front clutch IA, rear power-transfer clutch IB connects firmly, and the right-hand member of axle I2 connects with electric motor I 4, axle II13 in the differential screw and steering device is parallel to axle I2, sun wheel III 19, sun wheel II 15 and sun wheel I8 all are fixed on the axle II 13; First group of bidirectional clutch assembly controlled respectively the combination of front clutch IA and rear power-transfer clutch IB by control system or separated, when front clutch IA in conjunction with the time, gear I1 and planetary ring gear III22 engagement, power-transfer clutch IB is in released state after this moment, gear II3 separates with pinion carrier II14, when front clutch IA separates, rear power-transfer clutch IB in conjunction with the time, 14 engagements of gear II3 and pinion carrier II; Second and third group bidirectional clutch assembly connects with two other electrical motor respectively.
The arrangement of three groups of bidirectional clutch assemblies is: arrange around circumferential 120 degree of axle II13; Gear I1, gear V101 and gear VI 102 circumferential 120 degree arrange that all the external tooth with planetary ring gear III22 meshes, and gear II 3, gear III31 and gear IV 32 circumferential 120 degree are arranged, all mesh with pinion carrier II14; Front clutch IA, front clutch IIA1, front clutch IIIA2 arrange that around circumferential 120 degree of axle II13 rear power-transfer clutch IB, front clutch II B1, front clutch IIIB2 arrange around circumferential 120 degree of axle II13.
Every group of bidirectional clutch, illustrate such as getting first group of bidirectional clutch, it links to each other with one of them electrical motor, bidirectional clutch is by front clutch IA, rear power-transfer clutch IB forms, control respectively front clutch IA by clutch actuating mechanism, the combination of rear power-transfer clutch IB or separation, when front clutch IA in conjunction with the time, gear I1 is to planetary ring gear III22 transferring power, power-transfer clutch IB is in released state after this moment, be gear II3 not to pinion carrier II14 transferring power, in like manner, when front clutch IA separates, rear power-transfer clutch IB in conjunction with the time, gear II 3 is to pinion carrier II 14 transferring power.
Get first group of bidirectional clutch assembly and illustrate, be comprised of gear I1, front clutch IA, axle I2, rear power-transfer clutch IB, gear II 3, electric motor I 4, the arrangement of every group of such bidirectional clutch assembly is: arrange three groups around axle II 13 circumferential 120 degree.Can utilize like this frequency conversion drive and control technology to be straight-line travelling or turning reasonable distribution power, can also carry out continuous turning simultaneously, namely Turning radius is from zero to infinity.
When the bulldozer straight-line travelling, the front clutch IA of bidirectional clutch, front clutch IIA1, front clutch IIIA2 must be in released state, the planetary ring gear III22 that is meshed with gear I1, gear V101, gear VI 102 must fix, then power-transfer clutch IB, power-transfer clutch IIB1, power-transfer clutch IIIB2 are in bonding state, at this moment gear II3, gear III31, gear IV32 and pinion carrier II14 engagement, the left end output shaft 20 of guarantee differential screw and steering device is identical with the speed of right-hand member output shaft 9 like this.So the speed of left end output shaft 20 and right-hand member output shaft 9 is only identical, be that the parameter by differential screw and steering device determines.The rotating speed of electric motor I 4 determines the speed of straight-line travelling, and the power of straight-line travelling is determined by the number of the electrical motor of working.When the bulldozer turning driving, according to the difference of Turning radius, by turning to control module to determine the distribution of power and the rotation direction of electrical motor 4, the combination of namely controlling three groups of bidirectional clutches with separate.Such as realizing pivot stud, can make front clutch IA, front clutch IIA1, front clutch IIIA2 combination, rear power-transfer clutch IB, power-transfer clutch IIB1, power-transfer clutch IIIB2 separate, and power has been passed to planetary ring gear III22 like this, and the unpowered input of pinion carrier II14.
Beneficial effect of the present invention is:
(1) cost is low.Because this module has replaced complicated hydraulic efficiency pressure system and HM Hydraulic Motor, adopt three groups of double-clutchs to drive differential screw and steering device, realize straight-line travelling and turning.
(2) need not gearshift.Combination by control clutch with separate simple and compact structure.
(3) driving efficiency is high.Because the transmission adopted mechanical drive, so has the highest driving efficiency.
(4) control is simple.Since the combination that just operates bidirectional clutch with separate, so control system is simple and easy to realize.
Description of drawings
Fig. 1 is the electric drive earthmover travelling driving device structural representation
Fig. 2 is one group of bidirectional clutch assembly structure scheme drawing
Fig. 3 is the right elevation of front clutch
Fig. 4 is the right elevation of rear power-transfer clutch
Of which: A. front clutch I A1. Ago Clutch II A2. Ago after clutch clutch Ⅲ B. I B1. Rear clutch IIB2. Rear clutch Ⅲ 1. Gears I 2. Axis I 3. Gears Ⅱ 4. Motor I 5. Power inverter 6. generator 7. engines 8 sun gear I 9. right end of the output shaft 10. carrier I 11. planetary gear I 12. planetary ring gear I 13. axis II 14. carrier II 15. sun wheel II 16 planetary gear II 17. planetary ring gear II18. planetary gear Ⅲ 19. sun wheel III 20. left output shaft 21. carrier Ⅲ 22. planetary ring gear Ⅲ 31. gears Ⅲ 32. gears Ⅳ 101. gears V 102. gear Ⅵ 181. planetary gear Ⅳ 182. planetary gear V
The specific embodiment
The present invention is by driving engine 7, electrical generator 6, power inverter 5, electrical motor, the bidirectional clutch assembly, differential screw and steering device forms, wherein electrical motor is three, the bidirectional clutch assembly is three groups, each electrical motor all with power inverter 5, electrical generator 6 and driving engine 7 coupled in series, first group of bidirectional clutch assembly is by gear I1, front clutch IA, axle I2, rear power-transfer clutch IB and gear II3 form, axle I2 respectively with front clutch IA, rear power-transfer clutch IB connects firmly, and the right-hand member of axle I2 is connected with electric motor I 4, axle II 13 is parallel to axle I2, sun wheel III 19, sun wheel II15 and sun wheel I8 all are fixed on the axle II 13; First group of bidirectional clutch assembly controlled respectively the combination of front clutch IA and rear power-transfer clutch IB by control system or separated, when front clutch IA in conjunction with the time, gear I1 and planetary ring gear III22 engagement, power-transfer clutch IB is in released state after this moment, gear II3 separates with pinion carrier II 14, when front clutch IA separates, rear power-transfer clutch IB in conjunction with the time, gear II 3 and 14 engagements of pinion carrier II; Second and third group bidirectional clutch assembly is connected with two other electrical motor respectively.
The arrangement of three groups of bidirectional clutch assemblies is: arrange around circumferential 120 degree of axle II13; Gear I1, gear V101 and gear VI 102 circumferential 120 degree arrange that all the external tooth with planetary ring gear III22 meshes, and gear II3, gear III31 and gear IV 32 circumferential 120 degree are arranged, all mesh with pinion carrier II14; Front clutch I A, front clutch IIA1, front clutch IIIA2 arrange that around circumferential 120 degree of axle II13 rear power-transfer clutch IB, front clutch II B1, front clutch IIIB2 arrange around circumferential 120 degree of axle II13.
Electric drive earthmover travelling driving device has used three groups of bidirectional clutches, utilizes frequency conversion drive and control technology to realize the continuous turning of differential screw and steering device, and namely this mechanism's Turning radius can be from zero to infinite.
In electric transmission bulldozer driving process, we are divided into following several running state with the bulldozer driving cycle:
1. straight-line travelling state: the power that sends from driving engine 7 directly sends electric power by electrical generator 6, through power inverter 5 conversions, pass on the electric motor I 4, size according to the power of needs in the straight-line travelling, determined to need to use the quantity of electrical motor by control unit, whether by forward-reverse determines turning to of electrical motor, determines the urgency of bulldozer forward-reverse or slow by the rotating speed of electrical motor.When straight-line travelling, rear power-transfer clutch IB combination, front clutch IA separates, and this moment, power was passed on the pinion carrier II 14 by gear II 3, and the planetary ring gear III22 of this moment is fixed, and guarantee left end output shaft 20, right-hand member output shaft 9 advance with identical speed or retreat like this.Determine the number of required electrical motor according to the size of straight-line travelling required drive.
2. pivot stud motoring condition: different from the straight-line travelling state is, after power is exported from electric motor I 4, power-transfer clutch IB separates after this moment, front clutch IA combination, power is input to planetary ring gear III22 from gear I1, and gear II3 is in light condition, and power passes to planetary ring gear III22 by gear I1, and divide two-way after satellite gear III 18: a route pinion carrier (low speed high torque) is to left end output shaft 20; Pinion carrier I10 to axle II13, to sun wheel I8, is passed to through sun wheel III 19 (the little torque of high speed, its hand of rotation is opposite with planetary ring gear) in another road, to 9 outputs of right-hand member output shaft.Control unit is according to slow quantity and the velocity of rotation that decides needs to use electrical motor of the urgency of turning process.
3. turning driving state: this state is between straight-line travelling state and the pivot stud state.Three electrical motors of this kind state all are in the work.(1) when slow the turning, control unit makes a front clutch IA in first group of bidirectional clutch be in bonding state, and power-transfer clutch IB is in released state after another; Front clutch II A1, the front clutch IIIA2 of other two groups of bidirectional clutches are in released state, and rear power-transfer clutch IIB1, rear power-transfer clutch IIIB2 are in bonding state.The output speed of one side is increased, and the output speed of opposite side reduces.(2) when sharply turning, control unit makes two groups of front clutch IIA1, front clutch IIIA2 in the bidirectional clutch be in bonding state, and then power-transfer clutch IIB1, rear power-transfer clutch IIIB2 are in released state; The front clutch IA of other first group of bidirectional clutch is in released state, and rear power-transfer clutch IB is in bonding state.Can make like this output speed of a side continue to increase, the output speed of opposite side continues to reduce.
Claims (2)
1. electric drive earthmover travelling driving device, by driving engine (7), electrical generator (6), power inverter (5), electrical motor, the bidirectional clutch assembly, differential screw and steering device forms, it is characterized in that described electrical motor is three, the bidirectional clutch assembly is three groups, each electrical motor all with power inverter (5), electrical generator (6) and driving engine (7) coupled in series, first group of bidirectional clutch assembly is by gear I (1), front clutch I (A), axle I (2), rear power-transfer clutch I (B) and gear II (3) form, its axis I (2) respectively with front clutch I (A), rear power-transfer clutch I (B) connects firmly, and the right-hand member of axle I (2) connects with electric motor I (4) in described three electrical motors, axle II (13) in the differential screw and steering device is parallel to axle I (2), sun wheel I (19), sun wheel II (15) and sun wheel III (8) all are fixed on the axle II (13); First group of bidirectional clutch assembly controlled respectively the combination of front clutch I (A) and rear power-transfer clutch I (B) by control system or separated, when front clutch I (A) in conjunction with the time, gear I (1) and planetary ring gear I (22) engagement, power-transfer clutch I (B) is in released state after this moment, gear II (3) separates with pinion carrier (14), when front clutch I (A) separates, rear power-transfer clutch I (B) in conjunction with the time, gear II (3) and pinion carrier (14) engagement; Second and third group bidirectional clutch assembly connects with other two electrical motors in described three electrical motors respectively.
2. by electric drive earthmover travelling driving device claimed in claim 1, it is characterized in that the arrangement of described three groups of bidirectional clutch assemblies is: arrange around circumferential 120 degree of axle II (13); Circumferential 120 degree of gear I (1), gear V (101) and gear VI (102) are arranged, all the external tooth with planetary ring gear I (22) meshes, circumferential 120 degree of gear II (3), gear III (31) and gear IV (32) are arranged, all mesh with pinion carrier (14); Front clutch I (A), front clutch II (A1), front clutch III (A2) arrange that around circumferential 120 degree of axle II (13) rear power-transfer clutch I (B), rear power-transfer clutch II (B1), rear power-transfer clutch III (B2) are arranged around circumferential 120 degree of axle II (13).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201010616656 CN102069702B (en) | 2010-12-31 | 2010-12-31 | Electric drive earthmover travelling driving device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201010616656 CN102069702B (en) | 2010-12-31 | 2010-12-31 | Electric drive earthmover travelling driving device |
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| Publication Number | Publication Date |
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| CN102069702A CN102069702A (en) | 2011-05-25 |
| CN102069702B true CN102069702B (en) | 2013-04-10 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN 201010616656 Expired - Fee Related CN102069702B (en) | 2010-12-31 | 2010-12-31 | Electric drive earthmover travelling driving device |
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Families Citing this family (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103863104B (en) * | 2014-03-28 | 2017-09-12 | 山推工程机械股份有限公司 | A kind of caterpillar and its power drive system and method |
| CN104005447B (en) * | 2014-05-06 | 2016-08-10 | 潍柴动力股份有限公司 | Bull-dozer and driving means thereof |
| CN104389979A (en) * | 2014-09-15 | 2015-03-04 | 江苏大学 | Hydraulic mechanical transmission with auxiliary steering function |
| CN111731263B (en) * | 2020-06-24 | 2021-07-02 | 中国北方车辆研究所 | Multi-mode high-power hydraulic driving system based on hybrid power and control method |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0773127A2 (en) * | 1995-11-13 | 1997-05-14 | Toyota Jidosha Kabushiki Kaisha | Hybrid vehicle drive system with clutch for controlling engine driven planetary gear connected to motor/generator |
| CN101277837A (en) * | 2005-09-29 | 2008-10-01 | 卡特彼勒公司 | Electric powertrain for work machine |
| CN101631688A (en) * | 2007-10-17 | 2010-01-20 | 丰田自动车株式会社 | Gear train unit with motor generator |
| CN201914108U (en) * | 2010-12-31 | 2011-08-03 | 吉林大学 | Electric-transmission bulldozer walking driving device |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2010061401A2 (en) * | 2008-11-28 | 2010-06-03 | Tata Motors Limited | Drive system for a vehicle |
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2010
- 2010-12-31 CN CN 201010616656 patent/CN102069702B/en not_active Expired - Fee Related
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0773127A2 (en) * | 1995-11-13 | 1997-05-14 | Toyota Jidosha Kabushiki Kaisha | Hybrid vehicle drive system with clutch for controlling engine driven planetary gear connected to motor/generator |
| CN101277837A (en) * | 2005-09-29 | 2008-10-01 | 卡特彼勒公司 | Electric powertrain for work machine |
| CN101631688A (en) * | 2007-10-17 | 2010-01-20 | 丰田自动车株式会社 | Gear train unit with motor generator |
| CN201914108U (en) * | 2010-12-31 | 2011-08-03 | 吉林大学 | Electric-transmission bulldozer walking driving device |
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| CN102069702A (en) | 2011-05-25 |
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