CN102678839A - Double-clutch transmission used in tractor - Google Patents

Double-clutch transmission used in tractor Download PDF

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Publication number
CN102678839A
CN102678839A CN2011104059439A CN201110405943A CN102678839A CN 102678839 A CN102678839 A CN 102678839A CN 2011104059439 A CN2011104059439 A CN 2011104059439A CN 201110405943 A CN201110405943 A CN 201110405943A CN 102678839 A CN102678839 A CN 102678839A
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China
Prior art keywords
gear
driven gear
shaft
clutch
transmission
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CN2011104059439A
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Chinese (zh)
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CN102678839B (en
Inventor
徐立友
周志立
谢金法
彭巧励
曹付义
郗建国
牛毅
李忠利
曹青梅
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Henan University of Science and Technology
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Henan University of Science and Technology
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Priority to CN201110405943.9A priority Critical patent/CN102678839B/en
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    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16H—GEARING
    • F16H3/00—Toothed gearings for conveying rotary motion with variable gear ratio or for reversing rotary motion
    • F16H3/02—Toothed gearings for conveying rotary motion with variable gear ratio or for reversing rotary motion without gears having orbital motion
    • F16H3/08—Toothed gearings for conveying rotary motion with variable gear ratio or for reversing rotary motion without gears having orbital motion exclusively or essentially with continuously meshing gears, that can be disengaged from their shafts
    • F16H3/087—Toothed gearings for conveying rotary motion with variable gear ratio or for reversing rotary motion without gears having orbital motion exclusively or essentially with continuously meshing gears, that can be disengaged from their shafts characterised by the disposition of the gears
    • F16H3/093—Toothed gearings for conveying rotary motion with variable gear ratio or for reversing rotary motion without gears having orbital motion exclusively or essentially with continuously meshing gears, that can be disengaged from their shafts characterised by the disposition of the gears with two or more countershafts
    • F16H2003/0931—Toothed gearings for conveying rotary motion with variable gear ratio or for reversing rotary motion without gears having orbital motion exclusively or essentially with continuously meshing gears, that can be disengaged from their shafts characterised by the disposition of the gears with two or more countershafts each countershaft having an output gear meshing with a single common gear on the output shaft
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16H—GEARING
    • F16H3/00—Toothed gearings for conveying rotary motion with variable gear ratio or for reversing rotary motion
    • F16H3/006—Toothed gearings for conveying rotary motion with variable gear ratio or for reversing rotary motion power being selectively transmitted by either one of the parallel flow paths
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16H—GEARING
    • F16H37/00—Combinations of mechanical gearings, not provided for in groups F16H1/00 - F16H35/00
    • F16H37/02—Combinations of mechanical gearings, not provided for in groups F16H1/00 - F16H35/00 comprising essentially only toothed or friction gearings
    • F16H37/04—Combinations of toothed gearings only
    • F16H37/042—Combinations of toothed gearings only change gear transmissions in group arrangement
    • F16H37/046—Combinations of toothed gearings only change gear transmissions in group arrangement with an additional planetary gear train, e.g. creep gear, overdrive

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Abstract

本发明涉及一种拖拉机中使用的双离合器变速器，包括两根同轴设置的输入轴和与输入轴平行设置的第一、二中间轴，两根输入轴上分别固定有奇数挡位主动齿轮和偶数挡位主动齿轮，第一中间轴上空套有与对应输入轴上的主动齿轮啮合传动的第一从动齿轮组；第二中间轴上空套有与对应输入轴上的主动齿轮传动连接的第二从动齿轮组和倒挡从动齿轮，第一、二中间轴上分别设有用于对应扭矩向外输出的扭矩输出段，倒挡从动齿轮与所述第一从动齿轮组中的其中一个从动齿轮啮合传动。本发明的目的在于在于提供一种结构更加紧凑的双离合变速器，本发明省去了原有倒挡惰轮及倒挡惰轮轴的布置，使结构更加紧凑，减少了零部件数量，节省制作成本，降低了安装难度。

Figure 201110405943

The invention relates to a dual-clutch transmission used in a tractor, which comprises two coaxially arranged input shafts and first and second intermediate shafts arranged parallel to the input shafts. The two input shafts are respectively fixed with odd-numbered gear driving gears and Even-numbered gear driving gears, the first driven gear set is vacantly sleeved on the first intermediate shaft and meshed with the driving gear on the corresponding input shaft; The second driven gear set and the reverse gear driven gear, the first and second intermediate shafts are respectively provided with torque output sections for outputting the corresponding torque outward, the reverse gear driven gear and the first driven gear set A driven gear meshes the transmission. The purpose of the present invention is to provide a dual-clutch transmission with a more compact structure. The present invention saves the arrangement of the original reverse idler gear and the reverse idler shaft, makes the structure more compact, reduces the number of parts, and saves production costs , reducing the difficulty of installation.

Figure 201110405943

Description

The dual-clutch transmission that uses in a kind of tractor
Technical field
The present invention relates to the speed changer technical field, relate in particular to the dual-clutch transmission that uses in a kind of tractor.
Background technique
The tractor speed changer adopts armstrong's patent gearshift modes such as sliding gear, engagement cover and synchronizer more at present, needs first cut-off clutch during the tractor gearshift, then speed changer is plucked neutral, block selecting again, gearshift, last engaging clutch.Like this, after clutch separation, before clutch engages again again, the power of motor can not be passed to wheel and go to drive the tractor operation, so produced the interruption of transmission of power in the shift process, gearshift slowly influences operating efficiency.Double-clutch automatic gearbox is a kind of novel automatic transmission; It with transmission gear by strange, even number is arranged in two two input shafts that clutch connected on; Accomplish the gearshift overshoot through alternately switching of clutch; Realized power gear shifting, this is particularly important concerning the tractor of on-load operation.
The concrete structure of existing dual-clutch transmission such as Chinese patent CN200410070324.9 disclosed a kind of " double clutch gearbox "; Comprise the input shaft that two coaxial settings and the output shaft through each self-corresponding clutch and corresponding motor are in transmission connection, double clutch gearbox also comprises reverse gear idler shaft and two jack shafts that laterally arrange with input shaft.Fixedly be equipped with the odd number gear driving gear (one, three retaining driving gears) that is used for the transmission of odd number gear on the input shaft in two input shafts; Fixedly be equipped with the even number gear driving gear (two, four retaining driving gears) that is used for the transmission of even number gear on another input shaft.Synchronizer through correspondence on one of them jack shaft on two jack shafts is connected with one, two, three and four retaining driven gears; Synchronizer through correspondence on another jack shaft is connected with five, six retaining and the driven gears that reverse gear.Wherein a retaining driving gear and a retaining driven gear mesh with the driven gear that reverses gear simultaneously; Two retaining driving gears are meshed with two retaining driven gears; Three retaining driving gears and three retaining driven gears and five retaining driven gears mesh simultaneously; Four retaining driving gears and four retaining driven gears and six retaining driven gears mesh simultaneously.Two jack shafts can be selected to be in transmission connection with corresponding driven gear through the corresponding synchronous device as required, and the output terminal of two jack shafts directly is in transmission connection with corresponding differential mechanism.The problem that existing dual-clutch transmission exists is: the cooperation of reversing gear between the idle pulley of installing on the driven gear that need reverse gear, reverse gear idler shaft and the corresponding idler shaft that reverses gear could be accomplished the process that corresponding vehicle reverses gear; The idler shaft that reverses gear makes not only with the use of idle pulley of reversing gear that the double-clutch speed changer occupation space is big, structure is not compact; Also increase the amount of parts of double-clutch speed changer, and then increased the cost of production and the installation difficulty of double-clutch speed changer.
Summary of the invention
The objective of the invention is to be to provide a kind of structure double-clutch speed changer of compactness more.
In order to address the above problem, technological scheme of the present invention is:
The dual-clutch transmission that uses in a kind of tractor; Comprise case of transmission; Be provided with input shaft that two coaxial settings and the output shaft through each self-corresponding clutch and corresponding motor be in transmission connection and first jack shaft and second jack shaft that laterally arranges with said input shaft in the case of transmission, wherein fixedly be equipped with the odd number gear driving gear that is used for the transmission of odd number gear on an input shaft; Fixedly be equipped with the even number gear driving gear that is used for the transmission of even number gear on another input shaft, be set with on described first jack shaft with corresponding input shaft on the first driven tooth wheels that selectively are in transmission connection with said first jack shaft of driving gear engagement driving and the synchronizer through corresponding setting on said first jack shaft; Be set with on described second jack shaft with corresponding input shaft on the second driven tooth wheels that driving gear is in transmission connection and synchronizer and said second jack shaft through corresponding setting on said second jack shaft selectively is in transmission connection with reverse gear driven gear; Be respectively equipped with on first and second jack shaft and be used for the outwards moment of torsion output section of output of corresponding moment of torsion, one of them the driven gear engagement driving in described reverse gear driven gear and the said first driven tooth wheels.
Input shaft and the coaxial outer input shaft that is sheathed on said interior input shaft periphery in described two input shafts comprise; Described clutch comprises first clutch, second clutch and the three-clutch that coaxial line is set up in parallel, and described interior input shaft is realized being in transmission connection with the output shaft of corresponding motor through second clutch; Described outer input shaft is realized being in transmission connection with the output shaft of corresponding motor through three-clutch; Described speed changer also is included in the load output shaft that coaxial output shaft that wear and through said first clutch and corresponding motor is in transmission connection in the input shaft in said, and said load output shaft is provided with the load power output section that is used for to the respective load outputting power.
Input shaft and the coaxial outer input shaft that is sheathed on said interior input shaft periphery in described two input shafts comprise; Described driving gear comprise the I, the III that are fixed on the said outer input shaft keep off shared driving gear and V, VII keep off shared driving gear and be fixed on said in IV, VI on the input shaft keep off shared driving gear and II, the shared driving gear that reverses gear, the described first driven tooth wheels comprise that empty cover is installed on III retaining driven gear, VII retaining driven gear, II retaining driven gear and the VI retaining driven gear on said first jack shaft; The described second driven tooth wheels comprise that the sky cover is installed on I retaining driven gear, V retaining driven gear and the IV retaining driven gear on said second jack shaft, and described synchronizer comprises that being installed on also can select III, the VII retaining synchronizer that is in transmission connection with said III retaining driven gear and VII retaining driven gear as required and can select as required on said first jack shaft keeps off II, the VI retaining synchronizer that driven gear is in transmission connection with said II retaining driven gear and VI; Described synchronizer also comprise be installed on said second jack shaft and can according to need select I, the V retaining synchronizer that is in transmission connection with said I retaining driven gear and V retaining driven gear and can select to keep off IV that driven gear and reverse gear be in transmission connection as required with IV, synchronizer reverses gear.
Described driven gear and the described II retaining driven gear engagement driving of reversing gear.
Beneficial effect of the present invention is: when tractor reverses gear operation; One of them driven gear in the first driven tooth wheels uses as the idle pulley that reverses gear, and first jack shaft uses as the idler shaft that reverses gear, and has saved the layout of original the reverse gear idle pulley and the idler shaft that reverses gear; Make structure compact more; Reduce amount of parts, saved fabricating cost, reduced installation difficulty.
Description of drawings
Fig. 1 is the structural representation of the embodiment of the invention;
Fig. 2 is that the A of Fig. 1 is to section face figure.
Embodiment
The embodiment of the dual-clutch transmission that uses in a kind of tractor is shown in Fig. 1 ~ 2: comprise clutch device, case of transmission 3, control system of speed variator.
Clutch device comprises first clutch C1, second clutch C2, the three-clutch C3 that the clutch device input shaft 2 that links to each other with motor 1 bent axle and coaxial line are set up in parallel.
Be provided with speed changer main tank part and secondary box of gearbox part in the case of transmission 3, speed changer main tank part comprises outer input shaft 30, interior input shaft 32, load output shaft 19, first jack shaft 6, second jack shaft 22, main output shaft 10.Outer input shaft 30 1 ends are connected with three-clutch C3, and interior input shaft 32 1 ends are connected with second clutch C2, and load output shaft 19 1 ends are connected with clutch first clutch C1.Outer input shaft 30, interior input shaft 32 and the rotation of load output shaft 19 coaxial lines.Adopt space parallel to arrange between outer input shaft 30, interior input shaft 32, load output shaft 19 and first jack shaft 6, second jack shaft 22.
Be installed with I on the outer input shaft 30, III is kept off shared driving gear 31, V, VII are kept off shared driving gear 28.Be installed with IV on the interior input shaft 32, VI is kept off shared driving gear 25, II, shared driving gear 21 reverses gear.Load output shaft 19 is provided with the load power output section that is used for to corresponding agricultural machinery and implement even load outputting power; Load output shaft 19 is used for the part of tractor engine power consequently all is delivered to the agricultural machinery and implement even load with the mode of rotating mechanical energy, drives agricultural machinery and implement work.
Be installed with III, VII retaining synchronizer S1 on first jack shaft 6; II, VI retaining synchronizer S2; And first power output gear 20 that is used for the output of main tank power; Empty cover is equipped with the first driven tooth wheels, and the first driven tooth wheels comprise III retaining driven gear 4, VII retaining driven gear 5, VI retaining driven gear 7, II retaining driven gear 8.III retaining driven gear 4 keeps off shared driving gear 31 engagement driving with I, III; VII retaining driven gear 5 keeps off shared driving gear 28 engagement driving with V, VII; VI retaining driven gear 7 keeps off shared driving gear 25 engagement driving with IV, VI, II retaining driven gear 8 and II, shared driving gear 21 engagement driving of reversing gear.III, VII retaining synchronizer S1 optionally is delivered to the moment of torsion that III is kept off driven gear 4, VII retaining driven gear 5 on first jack shaft 6.II, VI retaining synchronizer S2 optionally is delivered to the moment of torsion that II is kept off driven gear 8, VI retaining driven gear 7 on first jack shaft 6.
Be installed with I, V retaining synchronizer S3 on second jack shaft 22; IV, synchronizer S4 reverses gear; And second power output gear 23 that is used for the output of main tank power; Empty cover is equipped with the second driven tooth wheels and comprises I retaining driven gear 29, V retaining driven gear 27 and IV retaining driven gear 26 with driven gear 24, the second driven tooth wheels that reverse gear.Wherein I retaining driven gear 29 keeps off shared driving gear 31 engagement driving with I, III; V retaining driven gear 27 keeps off shared driving gear 28 engagement driving with V, VII; IV retaining driven gear 26 keeps off shared driving gear 25 engagement driving with IV, VI; Reverse gear driven gear 24 and II retaining driven gear 8 engagement driving.I, V retaining synchronizer S3 optionally is delivered to the moment of torsion that I is kept off driven gear 29, V retaining driven gear 27 on second jack shaft 22, IV, reverse gear synchronizer S4 optionally with IV keep off driven gear 26, the moment of torsion of the driven gear 24 that reverses gear is delivered on second jack shaft 22.II retaining driven gear 8 uses as the idle pulley that reverses gear simultaneously, has saved the layout of the reverse gear idler shaft and the idle pulley that reverses gear, and makes structure compact more, has reduced amount of parts.In other embodiments of the invention, reverse gear driven gear 8 can also keep off driven gear 4, VII retaining driven gear 5 or VI retaining driven gear 7 engagement driving with III.
Be installed with active force driven gear 9 on the main output shaft 10; This gear simultaneously with first jack shaft 6 on first power output gear 20 and second power output gear, 23 engagements on second jack shaft 22, optionally moment of torsion of each retaining of main tank is delivered on the main output shaft 10 through synchronizer S1, S2, S3, S4.Main output shaft 10 uses as the secondary box of gearbox input shaft simultaneously.
The secondary box of gearbox part comprises that odd-side input shaft (also being main output shaft 10 simultaneously), the sun gear 11 of planetary gears, planet wheel 17, planet carrier 16, ring gear 18, height keep off synchronizer S5, secondary output shaft 14, the synchronous awl of high retaining and low retaining and bore 12 synchronously.Sun gear 11 coaxial being fixedly mounted on the odd-side input shaft.Be installed with planet carrier 16 on the secondary output shaft 14, also be provided with the driving dynamics output section that is used for the power of speed changer is exported to propons or back axle on the secondary output shaft.Be equipped with on the driving dynamics output section with power reach propons 53 driving gear 15 (be installed with on it high retaining synchronously awl), output power to the drive bevel gear 13 of back axle 54.Ring gear 18 keeps off synchronizer S5 with height and is fixed into a rigid unitary.Low retaining awl 12 synchronously is connected on the case of transmission 3 through certain device, and high retaining awl synchronously is fixed together with the driving gear 15 that power is reached propons 53.Height keeps off synchronizer S5 and optionally the transmission of power of odd-side input shaft 10 is arrived secondary output shaft 14.In other embodiments of the invention, speed changer main tank part and secondary box of gearbox part can also be divided in two housings.
Control system of speed variator be included in rotating speed that being used to of being provided with on the other case of transmission 3 of load output shaft 19, interior input shaft 32, outer input shaft 30, first jack shaft 6, second jack shaft 22 and secondary output shaft 14 detect each corresponding shaft with the running state of speed changer is discerned with the speed probe of judging 33, the electronic control unit (ECU) 50 that is connected with each speed probe 33, the clutch operation 51 that is connected with each Clutch Control and with each synchronizer control connection select shift control mechanism 52, clutch operation 51 and select shift control mechanism 52 control connections.During work; The sensor (not shown) of each speed probe 33 and other type is discerned the running state of speed changer and is judged; According to the schedule of setting, when the needs gear shift operation, electronic control unit (ECU) 50 sends instruction; Through clutch operation 51 with select shift control mechanism 52 to control the operation of each clutch and each synchronizer gearshift action, realization automatic speed changing respectively.
The speed changer main tank of dual-clutch transmission of the present invention comprises that partly seven forward gears and one reverses gear; Secondary box of gearbox partly comprises high and low two retainings; Can obtain (7+1) * 2 retaining through the major and minor case part of speed changer gear collocation, promptly 14 forward gears, 2 reverse gear.Gear is more, can satisfy the requirement of different tractor operation operating modes to speed, and each gear power transmission line of the major and minor case part of speed changer is:
Main tank I retaining: three-clutch C3 engages, and I, V retaining synchronizer S3 and I retaining driven gear 29 engage.Through this joint; Engine torque is passed to outer input shaft 30 through three-clutch C3; Moment of torsion keeps off shared driving gear 31, I retaining driven gear 29, I, V retaining synchronizer S3 via I, III and is passed to second jack shaft 22 then, and final torque is passed to odd-side input shaft (also being main output shaft 10 simultaneously) via second power output gear 23, active force driven gear 9.
Main tank II retaining: second clutch C2 engages, and II, VI retaining synchronizer S2 and II retaining driven gear 8 engage.Through this joint; Input shaft 32 in Engine torque is passed to through second clutch C2; Moment of torsion is passed to first jack shaft 6 via II, the shared driving gear 21 that reverses gear, II retaining driven gear 8, II, VI retaining synchronizer S2 then, and final torque is passed to odd-side input shaft (also being main output shaft 10 simultaneously) via first power output gear 20, active force driven gear 9.
Main tank III retaining: three-clutch C3 engages, and III, VII retaining synchronizer S1 and III retaining driven gear 4 engage.Through this joint; Engine torque is passed to outer input shaft 30 through three-clutch C3; Moment of torsion keeps off shared driving gear 31, III retaining driven gear 4, III, VII retaining synchronizer S1 via I, III and is passed to first jack shaft 6 then, and final torque is passed to odd-side input shaft (also being main output shaft 10 simultaneously) via first power output gear 20, active force driven gear 9.
Main tank IV retaining: second clutch C2 engages, and IV, reverse gear synchronizer S4 and IV retaining driven gear 26 engage.Through this joint; Input shaft 32 in Engine torque is passed to through second clutch C2; Moment of torsion keeps off shared driving gear 25, IV retaining driven gear 26, IV, the synchronizer S4 that reverses gear via IV, VI and is passed to second jack shaft 22 then, and final torque is passed to odd-side input shaft (also being main output shaft 10 simultaneously) via second power output gear 23, active force driven gear 9.
Main tank V retaining: three-clutch C3 engages, and I, V retaining synchronizer S3 and V retaining driven gear 27 engage.Through this joint; Engine torque is passed to outer input shaft 30 through three-clutch C3; Moment of torsion keeps off shared driving gear 28, V retaining driven gear 27, I, V retaining synchronizer S3 via V, VII and is passed to second jack shaft 22 then, and final torque is passed to odd-side input shaft (also being main output shaft 10 simultaneously) via second power output gear 23, active force driven gear 9.
Main tank VI retaining: second clutch C2 engages, and II, VI retaining synchronizer S2 and VI retaining driven gear 7 engage.Through this joint; Input shaft 32 in Engine torque is passed to through second clutch C2; Moment of torsion keeps off shared driving gear 25, VI retaining driven gear 7, II, VI retaining synchronizer S2 via IV, VI and is passed to first jack shaft 6 then, and final torque is passed to odd-side input shaft (also being main output shaft 10 simultaneously) via first power output gear 20, active force driven gear 9.
Main tank VII retaining: three-clutch C3 engages, and III, VII retaining synchronizer S1 and VII retaining driven gear 5 engage.Through this joint; Engine torque is passed to outer input shaft 30 through clutch C3; Moment of torsion keeps off shared driving gear 28, VII retaining driven gear 5, synchronizer S1 via V, VII and is passed to first jack shaft 6 then, and final torque is passed to odd-side input shaft (also being main output shaft 10 simultaneously) via first power output gear 20, active force driven gear 9.
Main tank reverses gear: second clutch C2 engages, and IV, reverse gear synchronizer S4 and the driven gear 24 that reverses gear engage.Through this joint; Input shaft 32 in Engine torque is passed to through clutch C2; Moment of torsion is passed to second jack shaft 22 via II, the shared driving gear 21 that reverses gear, the idle pulley that reverses gear (simultaneously as II retaining driven gear 8), the driven gear 24 that reverses gear, IV, the synchronizer S4 that reverses gear then, and final torque is passed to odd-side input shaft (also being main output shaft 10 simultaneously) via second power output gear 23, active force driven gear 9.
The low retaining of odd-side: height keeps off synchronizer S5 and hangs down retaining awl 12 joints synchronously, ring gear 18 lockings of planetary gears.Through this joint; The moment of torsion of main tank part is passed to secondary output shaft 14 via odd-side input shaft (also being main output shaft 10 simultaneously), sun gear 11, planet wheel 17, planet carrier 16; Final torque is passed to back axle 54 through drive bevel gear 13, perhaps is passed to propons 53 through driving gear 15.
The high retaining of odd-side: height keeps off synchronizer S5 and engages with the synchronous bevel gear 15 of high retaining, make the synchronous bevel gear of high retaining 15, height keep off synchronizer S5, secondary output shaft 14, planet carrier 17, ring gear 18 and become one, thereby whole planetary gears is an integral body.Through this joint; The moment of torsion of main tank part is passed to secondary output shaft 14 via odd-side input shaft (also being main output shaft 10 simultaneously), planetary gears; Final torque is passed to back axle 54 through drive bevel gear 13, perhaps is passed to propons 53 through driving gear 15.

Claims (4)

1.一种拖拉机中使用的双离合器变速器，包括变速器壳体，变速器壳体中设置有两根同轴设置并通过各自对应的离合器与相应发动机的输出轴传动连接的输入轴和与所述输入轴平行设置的第一中间轴和第二中间轴，其中一根输入轴上固定装配有用于奇数挡位传动的奇数挡位主动齿轮；另一个输入轴上固定装配有用于偶数挡位传动的偶数挡位主动齿轮，所述的第一中间轴上空套有与对应输入轴上的主动齿轮啮合传动并通过所述第一中间轴上对应设置的同步器有选择的与所述第一中间轴传动连接的第一从动齿轮组；所述的第二中间轴上空套有与对应输入轴上的主动齿轮传动连接并通过所述第二中间轴上对应设置的同步器与所述第二中间轴有选择的传动连接的第二从动齿轮组和倒挡从动齿轮，第一、二中间轴上分别设有用于对应扭矩向外输出的扭矩输出段，其特征在于：所述的倒挡从动齿轮与所述第一从动齿轮组中的其中一个从动齿轮啮合传动。 1. A dual-clutch transmission used in a tractor, comprising a transmission housing, in which two coaxial input shafts and output shafts connected to the corresponding engine through respective corresponding clutches and the input shafts are arranged in the transmission housing. The first intermediate shaft and the second intermediate shaft arranged in parallel, one of the input shafts is fixedly equipped with an odd-numbered gear driving gear for odd-numbered gear transmission; the other input shaft is fixedly equipped with an even gear for even-numbered gear transmission. Gear driving gear, the first intermediate shaft is vacantly sleeved with the driving gear on the corresponding input shaft for transmission, and is selectively transmitted with the first intermediate shaft through a synchronizer correspondingly arranged on the first intermediate shaft The connected first driven gear set; the second intermediate shaft is vacantly sleeved with the driving gear on the corresponding input shaft and is connected with the second intermediate shaft through a synchronizer correspondingly arranged on the second intermediate shaft The second driven gear set and the reverse gear driven gear are selectively connected by transmission. The first and second countershafts are respectively provided with torque output sections for outputting corresponding torque outwards. It is characterized in that: the reverse gear slave The driven gear is engaged with one of the driven gears in the first driven gear set for transmission. 2.根据权利要求1所述的双离合器变速器，其特征在于：所述的两个输入轴包括内输入轴和同轴套设于所述内输入轴外周的外输入轴，所述的离合器包括同轴线并列设置的第一离合器、第二离合器和第三离合器，所述的内输入轴通过第二离合器实现与相应发动机的输出轴传动连接；所述的外输入轴通过第三离合器实现与相应发动机的输出轴传动连接，所述的变速器还包括于所述内输入轴中同轴穿设的并通过所述第一离合器与相应发动机的输出轴传动连接的负载输出轴，所述负载输出轴上设有用于向相应负载输出动力的负载动力输出段。 2. The dual-clutch transmission according to claim 1, wherein the two input shafts include an inner input shaft and an outer input shaft coaxially sleeved on the outer periphery of the inner input shaft, and the clutch includes The first clutch, the second clutch and the third clutch arranged in parallel on the coaxial line, the inner input shaft realizes the transmission connection with the output shaft of the corresponding engine through the second clutch; the outer input shaft realizes the connection with the output shaft of the corresponding engine through the third clutch The output shaft of the corresponding engine is drivingly connected, and the transmission also includes a load output shaft coaxially passed through the inner input shaft and connected to the output shaft of the corresponding engine through the first clutch. The shaft is provided with a load power output section for outputting power to the corresponding load. 3.根据权利要求1所述的双离合器变速器，其特征在于：所述的两个输入轴包括内输入轴和同轴套设于所述内输入轴外周的外输入轴，所述的主动齿轮包括固连于所述外输入轴上的Ⅰ、Ⅲ挡共用主动齿轮和Ⅴ、Ⅶ挡共用主动齿轮及固连于所述内输入轴上的Ⅳ、Ⅵ挡共用主动齿轮和Ⅱ、倒挡共用主动齿轮，所述的第一从动齿轮组包括空套安装于所述第一中间轴上的Ⅲ挡从动齿轮、Ⅶ挡从动齿轮、Ⅱ挡从动齿轮和Ⅵ挡从动齿轮；所述的第二从动齿轮组包括空套安装于所述第二中间轴上的Ⅰ挡从动齿轮、Ⅴ挡从动齿轮和Ⅳ挡从动齿轮，所述的同步器包括安装于所述第一中间轴上的并可根据需要选择与所述Ⅲ挡从动齿轮和Ⅶ挡从动齿轮传动连接的Ⅲ、Ⅶ挡同步器及可根据需要选择与所述Ⅱ挡从动齿轮和Ⅵ挡从动齿轮传动连接的Ⅱ、Ⅵ挡同步器；所述的同步器还包括安装于所述第二中间轴上的并可根据需呀选择与所述Ⅰ挡从动齿轮和Ⅴ挡从动齿轮传动连接的Ⅰ、Ⅴ挡同步器及可根据需要选择与Ⅳ挡从动齿轮和倒挡齿轮传动连接的Ⅳ、倒挡同步器。 3. The dual-clutch transmission according to claim 1, wherein the two input shafts include an inner input shaft and an outer input shaft coaxially sleeved on the outer periphery of the inner input shaft, and the driving gear It includes the common driving gear for I and III gears and the common driving gear for V and VII gears fixedly connected to the outer input shaft, and the common driving gear for IV and VI gears and the common driving gear for II and reverse gears fixedly connected to the inner input shaft. The driving gear, the first driven gear set includes the driven gear of III gear, the driven gear of VII gear, the driven gear of II gear and the driven gear of VI gear which are installed on the first intermediate shaft without sleeve; The second driven gear set includes the I gear driven gear, the V gear driven gear and the IV gear driven gear installed on the second countershaft, and the synchronizer includes a gear mounted on the second intermediate shaft. On an intermediate shaft, the III and VII gear synchronizers that can be connected with the III gear driven gear and the VII gear driven gear can be selected according to the needs and can be selected with the II gear driven gear and the VI gear slave The Ⅱ and Ⅵ gear synchronizers connected by the driving gear transmission; the synchronizer also includes a gear that is installed on the second intermediate shaft and can be selected for transmission with the Ⅰ gear driven gear and the Ⅴ gear driven gear according to the needs. The connected I and V gear synchronizers and the IV and reverse gear synchronizers connected with the IV gear driven gear and the reverse gear can be selected as required. 4.根据权利要求3所述的双离合器变速器，其特征在于：所述的倒挡从动齿轮与所述的Ⅱ挡从动齿轮啮合传动。 4. The dual-clutch transmission according to claim 3, characterized in that: said reverse gear driven gear is meshed with said second gear driven gear for transmission.
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CN103982605B (en) * 2014-04-16 2016-07-06 河南科技大学 Shifter and use double; two clutch combined speed changers and the vehicle of this shifter
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