CN102808904A - Double-wet type dead axle and planet compound type mechanical speed change mechanism used for high-speed vehicle - Google Patents
Double-wet type dead axle and planet compound type mechanical speed change mechanism used for high-speed vehicle Download PDFInfo
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- CN102808904A CN102808904A CN2011101440240A CN201110144024A CN102808904A CN 102808904 A CN102808904 A CN 102808904A CN 2011101440240 A CN2011101440240 A CN 2011101440240A CN 201110144024 A CN201110144024 A CN 201110144024A CN 102808904 A CN102808904 A CN 102808904A
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Abstract
The invention relates to a double-wet type dead axle and planet compound type mechanical speed change mechanism used for a high-speed vehicle, belonging to the technical field of vehicle engineering. According to the double-wet type dead axle and planet compound type mechanical speed change mechanism, the scheme of the dead axle and planet compound type mechanical speed change mechanism is proposed according to a design concept of adopting the mixed matching of double-wet type gear shift control elements to carry out quick gear shift, wherein the speed change mechanism is provided with six forward gears and two reverse gears; an input structure of the speed change mechanism is adjusted to adapt to the longitudinal arrangement or the transverse arrangement of a vehicle power device, and an output structure of the speed change mechanism is adjusted to adapt to different drive requirements of a crawler-type vehicle or a multi-wheel drive wheel type vehicle; and a gear shift process of the speed change mechanism is guaranteed to be stable and quick by adopting the double-wet type gear shift control elements to carry out direct gear shift. The dead axle and planet compound type mechanical speed change mechanism has the characteristics of high transmission efficiency, high power density, simple structure, and the like and can be used for meeting the use requirements of high-speed high-mobility vehicles.
Description
Technical field
The present invention relates to a kind of mechanical speed change mechanism that is applied to hot-short, relate in particular to a kind of pair of wet type dead axle planet combined type mechanical speed change mechanism, belong to the Vehicle Engineering technical field.
Background technique
Transmission system is between power plant and driving wheel, and the various motor-driven function through control realization vehicle has irreplaceable effect.Gear is the core of transmission system, and the gear that development has high transmission efficiency, high power density and high reliability is pursuing one's goal of Vehicle Engineering technical field always.The advanced gear of the high rotating speed of following Mobility Enhancement Vehicle active demand, wide transmission range, high transmission efficiency, high power density.Though the multi-freedom degree of extensive use at present is the demand that main hydraulic mechanical transmission system has better satisfied motor-driven track-laying vehicle of contemporary height and wheeled vehicle with Three Degree Of Freedom; And has higher reliability; But owing to adopted fluid torque converter and oil supply system thereof in the transmission system; And make that the transmission efficiency of system is not high bigger with volume, can not satisfy the demand of following hot-short to the transmission system of high efficiency, small volume, lightweight.
Demand to following hot-short; Carrying out the extensive studies exploration aspect the advanced transmission of high transmission efficiency, high power density both at home and abroad,, combination drive transmission moving in the transmission of high integration hydraulic machine, fax, mechanical transmission, quiet liquid drive aspect such as transmission all has abundant achievement in research.Over nearly 10 years; China is obtaining significant achievement aspect the comprehensive transmission of track-laying vehicle fixed shaft type multi-freedom degree; Having had ripe approved product to drop into army uses; But the development progress aspect the comprehensive transmission of the planetary multi-freedom degree of track-laying vehicle is slow; Mainly be to receive the through engineering approaches design of complicated planet speed change mechanism and the restriction of manufacturing aspect weak foundation, still do not have corresponding approved product to supply army to use, aspect wheeled vehicle, still do not adopt the high-performance multi-freedom degree transmission system design proposal of wet type shift control element; Moving to pass the through engineering approaches research that dynamic and static liquid drives aspect the transmission then at the early-stage with combination drive in fax in China, also far can not satisfy the requirement of the practicality of finalizing the design.In the development experience of various transmissions, adopt two wet type shift control elements to realize that the mechanical transmission of fast slewing will be one of important development direction of following hot-short transmission system according to both at home and abroad.
Summary of the invention
The present invention provides a kind of hot-short with two wet type dead axle planet combined type mechanical speed change mechanisms; Through on dead axle gear basis, incorporating simple planet speed change mechanism; Can constitute and use the dead axle planet combined type multi-freedom degree gear that two wet type shift control elements carry out fast slewing, this mechanism will have high transmission efficiency, high power density and good yarage.
Hot-short is with two wet type dead axle planet combined type mechanical speed change mechanisms; Comprise gear casing, a cover two degrees of freedom planet speed change mechanism and a cover two degrees of freedom dead axle gear; Wherein the two degrees of freedom planet speed change mechanism comprises planet row, CH wet clutch and a BL wet brake; Planet row be made up of ring gear, planet carrier and sun gear; The CH wet clutch is between planet row's ring gear and sun gear, and the BL wet brake is between the casing of planet row's sun gear and combined type mechanical speed change mechanism; Two degrees of freedom dead axle gear is made up of four wet clutches, four groups of speed change gear pairs, speed change I axle and speed change II axles; Four wet clutches are respectively C1 wet clutch, C2 wet clutch, C 3 wet clutches and CR wet clutch, each wet clutch and the secondary corresponding connection of each group speed change gear.
Wherein: speed change II axle and speed change I axle are arranged in parallel in the gear box house up and down, arrange reverse driving gear, C3 driving gear, C1 driving gear, C1 wet clutch, C2 wet clutch, C2 driving gear on the speed change I axle from left to right successively, by dynamic bevel gear and planet speed change mechanism; Arrange left side planet row HL, reverse gear driven gear, CR wet clutch, C3 wet clutch, C3 driven gear, C1 driven gear, C2 driven gear and the right side capable row of the planet HR that confluxes that confluxes on the speed change II axle from left to right successively;
On speed change I axle, reverse driving gear and reverse idler gear directly mesh; The C3 driving gear directly meshes with the C3 driven gear that is positioned on the speed change II axle; The C1 driving gear directly meshes with C1 driven gear on being positioned at speed change II axle, the C1 driving gear adopts spline directly to connect with the passive part of C1 wet clutch; The passive part of C2 wet clutch adopts spline directly to connect with the C2 driving gear, and the C2 driving gear directly meshes with the C2 driven gear that is positioned on the speed change II axle; C1 wet clutch and C2 wet clutch are integrated in one, a shared clutch cylinder sleeve; Directly meshed with drive bevel gear, adopted spline directly to connect with planet row's ring gear by dynamic bevel gear by dynamic bevel gear; Speed change I axle right-hand member adopts spline directly to connect with planet row's planet carrier; The active part of CH wet clutch adopts spline directly to connect with planet row's ring gear, and the passive part of CH wet clutch adopts spline directly to connect with planet row's sun gear; The active part of BL wet brake adopts spline directly to connect with planet row's sun gear, and the passive part of BL wet brake 8 adopts Bolt Connection to be fixed on the casing of gear;
On speed change II axle, a left side conflux gearwheel be positioned at a left side conflux planet row HL left side, through the conflux sun gear of planet row HL of a splined left side, the conflux planet carrier employing spline of planet row HL of left pto and a left side directly connects; The right side conflux gearwheel be positioned at the right side conflux the capable row of planet HR right side, through the conflux sun gear of the capable row of planet HR of the splined right side, right pto directly connects with the planet carrier employing spline of the capable row of the right planet that confluxes HR14.CR wet clutch and C3 wet clutch 21 integrated designs in one, a shared clutch cylinder sleeve.In the gear of wheeled vehicle, arrange reverse gear driven gear, CR wet clutch, C3 wet clutch, C3 driven gear, C1 driven gear, C2 driven gear on the speed change II axle 16 from left to right successively.
When motor is vertically arranged, the axis separately of power input gear 1, shunting gear 2, oil feed pump actuation gear 32 and actuation gear 4 all with the parallel axes of drive bevel gear 3, shunting gear 2 and the coaxial duplicate gear of drive bevel gear 3 compositions.Power input gear 1 meshes with shunting gear 2 and oil feed pump actuation gear 32 simultaneously, and oil feed pump actuation gear 32 adopts splines directly to connect with oil feed pump 34; Actuation gear 4 directly meshes with oil feed pump actuation gear 32.
During the motor lateral arrangement, the axis separately of power input gear 1, oil feed pump actuation gear 32, actuation gear 4 is all parallel with speed change I axle 28, and power input gear 1 directly connects with the ring gear 7 of planet speed change mechanism.Oil feed pump actuation gear 32 meshes with power input gear 1 and actuation gear 4 simultaneously, and oil feed pump actuation gear 32 adopts splines directly to connect with oil feed pump 34.
In addition, when being applied to the high speed wheeled vehicle, combined type mechanical speed change mechanism removes left side gearwheel 26, left side planet row HL24, right side gearwheel 13 and the right side capable row of the planet HR14 that confluxes that confluxes that confluxes that confluxes.
Working principle: when 9 combinations of the CH of planet speed change mechanism wet clutch, when BL wet brake 8 separates; Realize that planet speed change mechanism is 1 from the velocity ratio of planet row's ring gear 7 to planet carrier 11; Straight speed change power to planet carrier 11, arrives speed change I axle 28 left ends by ring gear 7 constant-speed transmission of planet speed change mechanism; When 8 combinations of BL wet brake, when CH wet clutch 9 separates; Realize that planet speed change mechanism is (1+k)/k from the velocity ratio of planet row's ring gear 7 to planet carrier 11; K is planet row's a special parameter; Equal the ratio of planet row's the ring gear number of teeth 7 with sun gear 10 numbers of teeth on the numerical value, straight speed change power arrives speed change I axle 11 left ends after being passed to planet carrier 11 by ring gear 7 reductions of speed of planet speed change mechanism.
A wet type shift control element and the wet type shift control element of dead axle gear of each gear of combined type mechanical speed change mechanism through combining planet speed change mechanism simultaneously comes common the realization; Through mixing coupling, make combined type mechanical speed change mechanism have the straight speed changing function of six forward gearss and two reverse gears; When being applied to the high speed track-laying vehicle; Combined type mechanical speed change mechanism has with the steering power input mechanism mechanism of confluxing about joining; When being applied to the wheeled vehicle of the many wheel drive of high speed, combined type mechanical speed change mechanism is less than the mechanism of confluxing about joining with the steering power input mechanism.
Beneficial effect: the present invention has adopted two wet type shift control elements to carry out direct gear shift; Three-element kinematic relations such as ring gear, planet carrier and sun gear through the control planet speed change mechanism; And match with the dead axle gear; Guaranteed that combined type mechanical speed change mechanism gearshift procedure is steadily soft fast, can significantly improve the mobility of vehicle; The combined type mechanical speed change mechanism that is adopted has high transmission efficiency and specific power.Because two degrees of freedom planet speed change mechanism and dead axle gear are simple and reliable for structure, processing technology is simple.Combined type mechanical speed change mechanism has generalization preferably and seriation basis, and cost is low and the modification ability is strong, can satisfy the different driving demand of the wheeled vehicle of the many wheel drive of high speed track-laying vehicle and high speed.
Description of drawings
Fig. 1 is that high speed track-laying vehicle motor of the present invention is vertically arranged with the two direct gear shift mechanical speed change of wet type dead axle planet combined type mechanism driving sketches.
Fig. 2 is that high speed track-laying vehicle motor lateral arrangement of the present invention is with the two direct gear shift mechanical speed change of wet type dead axle planet combined type mechanism driving sketches.
Fig. 3 is that high speed wheeled vehicle motor lateral arrangement of the present invention is with the two direct gear shift mechanical speed change of wet type dead axle planet combined type mechanism driving sketches.
Wherein: 1. power input gear, 2. shunting gear, 3. drive bevel gear, 4. actuation gear, 5. by dynamic bevel gear, 6. gear casing; 7. ring gear, 8.BL wet brake, 9.CH wet clutch, 10. sun gear, 11. planet carriers, 12. right ptos; The gearwheel 13. conflux in the right side, 14. right sides planet row HR that confluxes, 15.C2 driven gear, 16. speed change II axles, 17.C2 wet clutch, 18.C1 wet clutch; 19.C1 driven gear, the 20.C3 driven gear, the 21.C3 wet clutch, the 22.CR wet clutch, 23. reverse gear driven gears, planet row HL confluxes on 24. left sides; The gearwheel 25. left pto, 26. left sides conflux, 27. reverse idler gears, 28. speed change I axles, 29. reverse driving gears; 30.C1 driving gear, 31.C3 driving gear, 32. oil feed pump actuation gears, 33.C2 driving gear, 34. oil feed pumps
Embodiment
As shown in Figure 1; When combined type mechanical speed change mechanism is applied to the high speed track-laying vehicle of the vertical layout of motor; The power input is through power input gear 1; Carry out power dividing after reaching shunting gear 2, the parallel drive bevel gear 3 of straight speed change power circuit and the actuation gear 4 of other power circuit such as steering power stream, fans drive power etc. of being input to of the power after the shunting; As shown in Figure 2; When combined type mechanical speed change mechanism is applied to the high speed track-laying vehicle of motor lateral arrangement; The power input is carried out power dividing at power input gear 1 place of combined type mechanical speed change mechanism; The straight power circuit directly is passed to the ring gear 7 of two degrees of freedom planet speed change mechanism, and other power circuit such as steering power stream, fans drive power etc. are passed to actuation gear 4 by power input gear 1 through oil feed pump actuation gear 32.As depicted in figs. 1 and 2; When combined type mechanical speed change mechanism is applied to the high speed track-laying vehicle; Combined type mechanical speed change mechanism has and the joining left side of steering power input mechanism gearwheel 26, left side planet row HL24, right side gearwheel 13 and the right side capable row of the planet HR14 that confluxes that confluxes that confluxes that confluxes; When being applied to the high speed wheeled vehicle, combined type mechanical speed change mechanism removes left side gearwheel 26, left side planet row HL24, right side gearwheel 13 and the right side capable row of the planet HR14 that confluxes that confluxes that confluxes that confluxes on the basis of Fig. 2.
2) straight speed change power circuit is passed to the ring gear 7 of two degrees of freedom planet speed change mechanism after by dynamic bevel gear 5 by drive bevel gear 3.The two degrees of freedom planet speed change mechanism is made up of the single star planet row of common interior outer gearing, CH wet clutch 9 and a BL wet brake 8; Planet row be made up of ring gear 7, planet carrier 11 and sun gear 10; CH wet clutch 9 is between planet row's ring gear 7 and sun gear 10, and BL wet brake 8 is between the casing 6 of sun gear that planet is arranged and combined type mechanical speed change mechanism.When 9 combinations of CH wet clutch, when BL wet brake 8 separates; Realize that planet speed change mechanism is 1 from the velocity ratio of planet row's ring gear 7 to planet carrier 11; Straight speed change power to planet carrier 11, arrives speed change I axle 28 left ends by ring gear 7 constant-speed transmission of planet speed change mechanism; When 8 combinations of BL wet brake, when CH wet clutch 9 separates; Realize that planet speed change mechanism is (1+k)/k from the velocity ratio of planet row's ring gear 7 to planet carrier 11; K is planet row's a special parameter; Equal the ratio of planet row's the ring gear number of teeth 7 with sun gear 10 numbers of teeth on the numerical value, straight speed change power arrives speed change I axle 11 left ends after being passed to planet carrier 11 by ring gear 7 reductions of speed of planet speed change mechanism.
The wet type shift control element of combined type mechanical speed change mechanism and the logical relation of gear are as shown in table 1.Each gear need combine a wet type shift control element of two degrees of freedom planet speed change mechanism and a wet type gear-changing component of two degrees of freedom dead axle gear to decide simultaneously.Each grade power transmission line is as shown in table 2.After the straight power gear transfer route listed according to table 2 is passed to speed change II axle 16; Constant speed is assigned to left side planet row HL24 and the right side capable row of the planet HR14 that confluxes that confluxes; Output behind left pto 25 and right pto 12 respectively at last; Powered vehicle both sides traveller realizes the vehicle straight respectively.
The wet type shift control element of table 1 combined type mechanical speed change mechanism and the logical relation of gear
In the table: ● represent this wet type shift control combination of elements
Each grade power transmission line table of table 2 pair wet type mechanical speed change mechanism
Combined type mechanical speed change mechanism is when being changed to adjacent next object gear by current gear; Make the combination oil pressure off-load of CH wet clutch 9 or BL wet brake 8 earlier; Make CH wet clutch 9 or BL wet brake 8 be in separated state; The ring gear 7 of planet speed change mechanism, planet carrier 11 and sun gear 10 are in free state, meanwhile, separate through the wet clutch that makes the dead axle gear in current gear, be in bonding state to the off-load control that combines oil pressure; With the wet clutch of correspondence and the power cut between speed change I axle 28 or the speed change II axle 16; Make combined type mechanical speed change mechanism be in neutral state, subsequently, through the dead axle gear is combined at the wet clutch of object gear to the pressure-controlled of building that combines oil pressure; Be wet clutch and the speed change I axle 28 or the speed change II axle 16 realization transmission of power of object gear; At last, through planet speed change mechanism is combined at the BL of object gear wet brake 8 or CH wet clutch 9, recover the transmission of power of planet speed change mechanism to the pressure-controlled of building that combines oil pressure.Through above-mentioned gearshift procedure; Realize combined type mechanical speed change mechanism by current gear switch to object gear; Wet clutch in the handoff procedure all cushions control and time-oriented sequential control through control hydraulic system with the oil pressure that combines of wet brake, and control oil is provided by oil feed pump 34.
Claims (6)
1. hot-short is with two wet type dead axle planet combined type mechanical speed change mechanisms; It is characterized in that comprising gear casing (6), a cover two degrees of freedom planet speed change mechanism and a cover two degrees of freedom dead axle gear; Wherein the two degrees of freedom planet speed change mechanism comprises planet row, CH wet clutch (9) and a BL wet brake (8); Ring gear (7), planet carrier (11) and sun gear (10) are drawn together in the planet package; CH wet clutch (9) is positioned between planet row's the ring gear (7) and sun gear (10), and BL wet brake (8) is positioned between planet row's the sun gear and gear casing (6); Two degrees of freedom dead axle gear comprises four wet clutches, four groups of speed change gear pairs, speed change I axle (28) and speed change II axles (16); Four wet clutches are respectively C1 wet clutch (18), C2 wet clutch (17), C3 wet clutch (21) and CR wet clutch (22), each wet clutch and the secondary corresponding connection of each group speed change gear; Speed change II axle (16) and speed change I axle (28) are arranged in parallel in gear casing (6) inside up and down, arrange reverse driving gear (29), C 3 driving gears (31), C1 driving gear (30), C1 wet clutch (18), C2 wet clutch (17), C2 driving gear (33) on the speed change I axle (28) from left to right successively, by dynamic bevel gear (5) and planet speed change mechanism; Arrange left side planet row HL (24), reverse gear driven gear (23), CR wet clutch (22), C3 wet clutch (21), C3 driven gear (20), C1 driven gear (19), C2 driven gear (15) and the right side capable row of the planet HR (14) that confluxes that confluxes on the speed change II axle (16) from left to right successively.
2. hot-short as claimed in claim 1 is characterized in that on speed change I axle (28) with two wet type dead axle planet combined type mechanical speed change mechanisms, reverse driving gear (29) and reverse idler gear (27) engagement; C3 driving gear (31) and C3 driven gear (20) engagement that is positioned on the speed change II axle (16); C1 driving gear (30) adopts splined with C1 driven gear (19) engagement, the C1 driving gear (30) that are positioned on the speed change II axle (16) with the passive part of C1 wet clutch (18); The passive part of C2 wet clutch (17) and C2 driving gear (33) adopt splined, C2 driving gear (33) and C2 driven gear (15) engagement that is positioned on the speed change II axle (16); C1 wet clutch (18) and the shared clutch cylinder sleeve of C2 wet clutch (17); The ring gear (7) that is meshed, arranged by dynamic bevel gear (5) and planet by dynamic bevel gear (5) and drive bevel gear (3) adopts splined; Speed change I axle (28) right-hand member and planet row's planet carrier (11) adopts splined; The active part of CH wet clutch (9) and planet row's ring gear (7) adopts splined, and the passive part of CH wet clutch (9) and planet row's sun gear (10) adopts splined; The active part of BL wet brake (8) and planet row's sun gear (10) adopts splined, and the passive part of BL wet brake (8) is fixed by bolts on the gear casing (6).
3. hot-short as claimed in claim 1 is with two wet type dead axle planet combined type mechanical speed change mechanisms; It is characterized in that on speed change II axle (16); A left side conflux gearwheel (26) be positioned at a left side conflux planet row HL (24) left side, through the conflux sun gear of planet row HL (24) of a splined left side, the conflux planet carrier of planet row HL (24) of left pto (25) and a left side adopts splined; The right side conflux gearwheel (13) be positioned at the right side conflux the capable row of planet HR (14) right side, through the conflux sun gear of planet capable row HR (14) of the splined right side, the conflux planet carrier of planet capable row HR (14) of right pto (12) and the right side adopts splined; CR wet clutch (22) and the shared clutch cylinder sleeve of C 3 wet clutches (21).
4. hot-short as claimed in claim 1 is with two wet type dead axle planet combined type mechanical speed change mechanisms; When it is characterized in that motor is vertically arranged; The axis separately of power input gear (1), shunting gear (2), oil feed pump actuation gear (32) and actuation gear (4) all with the parallel axes of drive bevel gear (3), shunt the coaxial duplicate gear of gear (2) and drive bevel gear (3) composition; Power input gear (1) meshes with shunting gear (2) and oil feed pump actuation gear (32) simultaneously, and oil feed pump actuation gear (32) adopts splined with oil feed pump (34); Actuation gear (4) and oil feed pump actuation gear (32) engagement.
5. hot-short as claimed in claim 1 is with two wet type dead axle planet combined type mechanical speed change mechanisms; When it is characterized in that the motor lateral arrangement; The axis separately of power input gear (1), oil feed pump actuation gear (32), actuation gear (4) is all parallel with speed change I axle (28), and power input gear (1) connects with the ring gear (7) of planet speed change mechanism; Oil feed pump actuation gear (32) meshes with power input gear (1) and actuation gear (4) simultaneously, and oil feed pump actuation gear (32) adopts splined with oil feed pump (34).
6. hot-short as claimed in claim 1 is with two wet type dead axle planet combined type mechanical speed change mechanisms; It is characterized in that when being applied to the high speed wheeled vehicle; Mechanism removes left side gearwheel (26), left side planet row HL (24), right side gearwheel (13) and the right side capable row of the planet HR (14) that confluxes that confluxes that confluxes that confluxes, and arranges reverse gear driven gear (23), CR wet clutch (22), C3 wet clutch (21), C3 driven gear (20), C1 driven gear (19), C2 driven gear (15) on the speed change II axle (16) from left to right successively.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201110144024.0A CN102808904B (en) | 2011-05-31 | 2011-05-31 | Double-wet type dead axle and planet compound type mechanical speed change mechanism used for high-speed vehicle |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201110144024.0A CN102808904B (en) | 2011-05-31 | 2011-05-31 | Double-wet type dead axle and planet compound type mechanical speed change mechanism used for high-speed vehicle |
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| Publication Number | Publication Date |
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| CN102808904A true CN102808904A (en) | 2012-12-05 |
| CN102808904B CN102808904B (en) | 2014-12-24 |
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| CN201110144024.0A Active CN102808904B (en) | 2011-05-31 | 2011-05-31 | Double-wet type dead axle and planet compound type mechanical speed change mechanism used for high-speed vehicle |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112747099A (en) * | 2021-01-08 | 2021-05-04 | 北京理工大学 | Military engineering machinery integrated transmission device |
| CN112776594A (en) * | 2021-01-08 | 2021-05-11 | 北京理工大学 | Integrated transmission case integration technology and overall arrangement scheme |
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| JP2007085517A (en) * | 2005-09-26 | 2007-04-05 | Kubota Corp | Variable speed transmission |
| CN2924171Y (en) * | 2006-05-31 | 2007-07-18 | 华南理工大学 | Dual-clutch type automatic transmission for preventing two-gear from being locked |
| CN201190775Y (en) * | 2008-04-03 | 2009-02-04 | 常林股份有限公司 | Transmission mechanism for integral power shifting hydraulic transmission for engineering machinery |
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Patent Citations (5)
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| JP2001278103A (en) * | 2000-03-30 | 2001-10-10 | Iseki & Co Ltd | Traveling drive device of crawler type mobile vehicle |
| CN1616853A (en) * | 2004-08-24 | 2005-05-18 | 吉林大学 | Double clutch type automatic gearbox |
| JP2007085517A (en) * | 2005-09-26 | 2007-04-05 | Kubota Corp | Variable speed transmission |
| CN2924171Y (en) * | 2006-05-31 | 2007-07-18 | 华南理工大学 | Dual-clutch type automatic transmission for preventing two-gear from being locked |
| CN201190775Y (en) * | 2008-04-03 | 2009-02-04 | 常林股份有限公司 | Transmission mechanism for integral power shifting hydraulic transmission for engineering machinery |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN112747099A (en) * | 2021-01-08 | 2021-05-04 | 北京理工大学 | Military engineering machinery integrated transmission device |
| CN112776594A (en) * | 2021-01-08 | 2021-05-11 | 北京理工大学 | Integrated transmission case integration technology and overall arrangement scheme |
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| Publication number | Publication date |
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| CN102808904B (en) | 2014-12-24 |
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Inventor after: Li Heyan Inventor after: Ma Biao Inventor after: He Song Inventor before: Li Heyan Inventor before: Ma Biao |
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