CN104390002A - 湿式二档自动变速器 - Google Patents
湿式二档自动变速器 Download PDFInfo
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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
- F16H61/00—Control functions within control units of change-speed- or reversing-gearings for conveying rotary motion ; Control of exclusively fluid gearing, friction gearing, gearings with endless flexible members or other particular types of gearing
- F16H61/0003—Arrangement or mounting of elements of the control apparatus, e.g. valve assemblies or snapfittings of valves; Arrangements of the control unit on or in the transmission gearbox
- F16H61/0009—Hydraulic control units for transmission control, e.g. assembly of valve plates or valve units
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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
- F16D—COUPLINGS FOR TRANSMITTING ROTATION; CLUTCHES; BRAKES
- F16D48/00—External control of clutches
- F16D48/02—Control by fluid pressure
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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
- F16H3/083—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 with radially acting and axially controlled clutching members, e.g. sliding keys
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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
- F16H61/00—Control functions within control units of change-speed- or reversing-gearings for conveying rotary motion ; Control of exclusively fluid gearing, friction gearing, gearings with endless flexible members or other particular types of gearing
- F16H61/0021—Generation or control of line pressure
- F16H61/0025—Supply of control fluid; Pumps therefore
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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
- F16H61/00—Control functions within control units of change-speed- or reversing-gearings for conveying rotary motion ; Control of exclusively fluid gearing, friction gearing, gearings with endless flexible members or other particular types of gearing
- F16H61/02—Control functions within control units of change-speed- or reversing-gearings for conveying rotary motion ; Control of exclusively fluid gearing, friction gearing, gearings with endless flexible members or other particular types of gearing characterised by the signals used
- F16H61/0262—Control functions within control units of change-speed- or reversing-gearings for conveying rotary motion ; Control of exclusively fluid gearing, friction gearing, gearings with endless flexible members or other particular types of gearing characterised by the signals used the signals being hydraulic
- F16H61/0265—Control functions within control units of change-speed- or reversing-gearings for conveying rotary motion ; Control of exclusively fluid gearing, friction gearing, gearings with endless flexible members or other particular types of gearing characterised by the signals used the signals being hydraulic for gearshift control, e.g. control functions for performing shifting or generation of shift signals
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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
- F16H61/00—Control functions within control units of change-speed- or reversing-gearings for conveying rotary motion ; Control of exclusively fluid gearing, friction gearing, gearings with endless flexible members or other particular types of gearing
- F16H61/68—Control functions within control units of change-speed- or reversing-gearings for conveying rotary motion ; Control of exclusively fluid gearing, friction gearing, gearings with endless flexible members or other particular types of gearing specially adapted for stepped gearings
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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
- F16H61/00—Control functions within control units of change-speed- or reversing-gearings for conveying rotary motion ; Control of exclusively fluid gearing, friction gearing, gearings with endless flexible members or other particular types of gearing
- F16H61/02—Control functions within control units of change-speed- or reversing-gearings for conveying rotary motion ; Control of exclusively fluid gearing, friction gearing, gearings with endless flexible members or other particular types of gearing characterised by the signals used
- F16H61/0202—Control functions within control units of change-speed- or reversing-gearings for conveying rotary motion ; Control of exclusively fluid gearing, friction gearing, gearings with endless flexible members or other particular types of gearing characterised by the signals used the signals being electric
- F16H61/0204—Control functions within control units of change-speed- or reversing-gearings for conveying rotary motion ; Control of exclusively fluid gearing, friction gearing, gearings with endless flexible members or other particular types of gearing characterised by the signals used the signals being electric for gearshift control, e.g. control functions for performing shifting or generation of shift signal
- F16H61/0213—Control functions within control units of change-speed- or reversing-gearings for conveying rotary motion ; Control of exclusively fluid gearing, friction gearing, gearings with endless flexible members or other particular types of gearing characterised by the signals used the signals being electric for gearshift control, e.g. control functions for performing shifting or generation of shift signal characterised by the method for generating shift signals
- F16H2061/0234—Adapting the ratios to special vehicle conditions
Abstract
本发明属于新能源汽车技术领域,涉及汽车换挡机构,具体地说是一种湿式二档自动变速器,包括后外壳,所述后外壳上连接有前外壳,所述后外壳的输入端设置有动力油泵,后外壳内与所述动力油泵相对一端设置有湿式变速离合器;所述动力油泵的输出端连接动力输入轴,动力输入轴的动力输入给湿式变速离合器,所述湿式变速离合器的动力输出给动力输出轴;所述动力输入轴转动支承于后外壳上,且动力输入轴另一端伸入前外壳内,且动力输入轴伸入前外壳的端部与电机连接盘相连接,动力输出轴转动支承于后外壳上,所述动力输入轴、动力输出轴相互平行设置。该变速器体积小、重量轻、额定转速高,额定驱动转矩大。
Description
技术领域
本发明属于新能源汽车技术领域,涉及汽车换挡机构,具体地说是一种湿式二档自动变速器。
背景技术
我国早在“八五”期间就将电动汽车列入重点研发攻关项目,“九五”将电动汽车列为重大科技产业工程,“十五”设立“863 计划”电动汽车重大科技专项,确立并坚持了“三纵三横”的研发布局,“十一五”又设立“863 计划”节能与新能源汽车重大项目继续资助新能源汽车的研发、应用和推广。
目前国内电动汽车与国外同类型车型相比还存在整车结构紧凑性、各总成之间配合不紧密等问题。为了解决这些问题,我国科技界正在努力使纯电动汽车各关键组成部件向模块化和一体化方向发展。
作为纯电动汽车的关键组成部件:驱动电机 ,其驱动电磁特性、受车载使用条件限制,直接使用电机驱动车辆存在着电能利用效率低、能耗大、加速度小、爬坡度不够等一系列弊病。
目前,国内车载动力驱动电机的额定输出转速2000r/min左右,额定输出转矩50Nm左右,在2000r/min以下电机的输出特性为恒转矩输出,在2000r/min以上电机的输出特性为恒功率输出。
当驱动电机工作在恒输出转矩区域时,耗能按平方倍率递增,对车载电源的续驶里程影响极大;当驱动电机工作在恒功率输出区域时,输出转矩随车速的提高而降低,直接影响车辆的加速度与爬坡性能。
驱动电机工作在2000r/min以下时,耗能成倍率增长,驱动电机工作在2000r/min以上时,驱动转矩成倍率降低;为使驱动电机经常工作在转速 2000r/min 左右,转矩 50Nm左右的高效工作点附近,就要求车辆的传动减速系统必须具有变速比的功能,使动力总成在汽车起步与低速行驶时,减速比增大,驱动电机工作在2000r/min 左右的额定转速点附近,当汽车的车速达到30~60km/h的城市道路经常使用车速时,减速比减小,使驱动电机仍然可以工作在2000r/min 左右的额定转速点附近,也即使驱动电机经常工作在高效点附近,有效的保证车辆的加速度、爬坡度、续驶里程与电池能量的利用。
经查新与调查,目前国内没有生产此类新能源汽车二档自动变速器的厂商,目前国内纯电动汽车电机驱动动力总成采用的是定速比的减速机构,并不完全符合电机的使用特性。为此研发了本发明设计、研发了本新能源汽车二档自动变速器。
发明内容
本发明针对上述问题,提供一种湿式二档自动变速器,该变速器体积小、重量轻、额定转速高,额定驱动转矩大。
按照本发明的技术方案:一种湿式二档自动变速器,其特征是:包括后外壳,所述后外壳上连接有前外壳,所述后外壳的输入端设置有动力油泵,后外壳内与所述动力油泵相对一端设置有湿式变速离合器;所述动力油泵的输出端连接动力输入轴,动力输入轴的动力输入给湿式变速离合器,所述湿式变速离合器的动力输出给动力输出轴;所述动力输入轴转动支承于后外壳上,且动力输入轴另一端伸入前外壳内,且动力输入轴伸入前外壳的端部与电机连接盘相连接,动力输出轴转动支承于后外壳上,所述动力输入轴、动力输出轴相互平行设置。
作为本发明的进一步改进,所述湿式变速离合器包括离合器壳体及转动设置于所述离合器壳体上的变速轴,变速轴后端轴径上套设有后端滚子轴承,所述后端滚子轴承后端设置有轴向调整垫,前端设置有后端轴承间隙垫,并在减速轴上对应于后端轴承间隙垫的前端设置低速输出齿轮;所述变速轴前端伸出离合器壳体外侧,并在变速轴伸出离合器壳体外侧的轴径上依次设置有后端轴承间隙垫、高速输出齿轮、前端轴承间隙垫、变速轴输出齿轮、前端滚子轴承;所述变速轴内部设置有横向油道,横向油道外端设置有油口丝堵,变速轴后端轴径上设置有进油连接套,所述变速轴的动力传递给动力输出轴;离合器壳体上设置有湿式离合器及控制活塞,湿式离合器的油槽端口与横向油道相接通。
作为本发明的进一步改进,所述高速输出齿轮通过连接花键设置于变速轴上。
本发明的技术效果在于:本发明产品结构简单、设计合理巧妙,提供一种与纯电动汽车驱动电机配套、组成新型动力总成的液控湿式二档自动变速器,以解决纯电动汽车电机动力总成要求;本发明产品体积小、重量轻、额定转速高、额定驱动转矩大。
附图说明
图1为本发明的结构示意图。
图2为本发明中湿式变速离合器的结构示意图。
具体实施方式
下面结合附图对本发明的具体实施方式作进一步的说明。
图1、2中,包括动力油泵1、动力输入轴2、动力输出轴3、湿式变速离合器4、进油连接套4.1、油口丝堵4.2、轴向调整垫4.4、后端滚子轴承4.5、后端轴承间隙垫4.6、低速输出齿轮4.7、湿式离合器4.8、控制活塞4.9、后端轴承间隙垫4.10、高速输出齿轮4.11、连接花键4.12、前端轴承间隙垫4.13、变速轴输出齿轮4.14、前端滚子轴承4.15、后外壳5、前外壳6、电机联接盘7等。
如图1、2所示,本发明是一种湿式二档自动变速器,包括后外壳5,所述后外壳5上连接有前外壳6,所述后外壳5的输入端设置有动力油泵1,后外壳5内与所述动力油泵1相对一端设置有湿式变速离合器4;所述动力油泵1的输出端连接动力输入轴2,动力输入轴2的动力输入给湿式变速离合器4,所述湿式变速离合器4的动力输出给动力输出轴3;所述动力输入轴2转动支承于后外壳5上,且动力输入轴2另一端伸入前外壳6内,且动力输入轴2伸入前外壳6的端部与电机连接盘7相连接,动力输出轴3转动支承于后外壳5上,所述动力输入轴2、动力输出轴3相互平行设置。
所述湿式变速离合器4包括离合器壳体及转动设置于所述离合器壳体上的变速轴,变速轴后端轴径上套设有后端滚子轴承4.5,所述后端滚子轴承4.5后端设置有轴向调整垫4.4,前端设置有后端轴承间隙垫4.6,并在减速轴上对应于后端轴承间隙垫4.6的前端设置低速输出齿轮4.7;所述变速轴前端伸出离合器壳体外侧,并在变速轴伸出离合器壳体外侧的轴径上依次设置有后端轴承间隙垫4.10、高速输出齿轮4.11、前端轴承间隙垫4.13、变速轴输出齿轮4.14、前端滚子轴承4.14;所述变速轴内部设置有横向油道,横向油道外端设置有油口丝堵4.2,变速轴后端轴径上设置有进油连接套4.1,所述变速轴的动力传递给动力输出轴3;离合器壳体上设置有湿式离合器4.8及控制活塞4.9,湿式离合器4.8的油槽端口与横向油道相接通。
所述高速输出齿轮4.11通过连接花键4.12设置于变速轴上。
本发明的工作过程如下:在工作时,压力油液经进油联接套4.1及设计在轴上的油道被输送到4.8湿式离合器,4.8湿式离合器具有二组相同的湿式摩擦片,右边的一组湿式摩擦片控制高速档的结合与分离,当4.9控制活塞不工作时,由一片碟形弹簧压紧,使4.11高速档齿轮接合工作;当操纵送入压力油液,使4.9控制活塞向左移动时,右侧的碟形弹簧被拉直,放松压紧右侧湿式摩擦片,使4.11高速档齿轮被分离,随即左侧的湿式摩擦片被4.9控制活塞压紧,使4.7低速档结合传递动力,当车速达到设定的转换值时,4.9控制活塞的压紧油液被放空,碟形弹簧复位,右侧的湿式摩擦片被碟形弹簧重新压紧,高速档齿轮接合工作传递动力,此时换挡系统不消耗动力,如此反复循环,可使纯电动汽车在尽可能多的时间内工作在驱动电机的高效区,达到有效提高续驶里程的目的。
Claims (3)
1.一种湿式二档自动变速器,其特征是:包括后外壳(5),所述后外壳(5)上连接有前外壳(6),所述后外壳(5)的输入端设置有动力油泵(1),后外壳(5)内与所述动力油泵(1)相对一端设置有湿式变速离合器(4);所述动力油泵(1)的输出端连接动力输入轴(2),动力输入轴(2)的动力输入给湿式变速离合器(4),所述湿式变速离合器(4)的动力输出给动力输出轴(3);所述动力输入轴(2)转动支承于后外壳(5)上,且动力输入轴(2)另一端伸入前外壳(6)内,且动力输入轴(2)伸入前外壳(6)的端部与电机连接盘(7)相连接,动力输出轴(3)转动支承于后外壳(5)上,所述动力输入轴(2)、动力输出轴(3)相互平行设置。
2.按照权利要求1所述的湿式二档自动变速器,其特征是:所述湿式变速离合器(4)包括离合器壳体及转动设置于所述离合器壳体上的变速轴,变速轴后端轴径上套设有后端滚子轴承(4.5),所述后端滚子轴承(4.5)后端设置有轴向调整垫(4.4),前端设置有后端轴承间隙垫(4.6),并在减速轴上对应于后端轴承间隙垫(4.6)的前端设置低速输出齿轮(4.7);所述变速轴前端伸出离合器壳体外侧,并在变速轴伸出离合器壳体外侧的轴径上依次设置有后端轴承间隙垫(4.10)、高速输出齿轮(4.11)、前端轴承间隙垫(4.13)、变速轴输出齿轮(4.14)、前端滚子轴承(4.14);所述变速轴内部设置有横向油道,横向油道外端设置有油口丝堵(4.2),变速轴后端轴径上设置有进油连接套(4.1),所述变速轴的动力传递给动力输出轴(3);离合器壳体上设置有湿式离合器(4.8)及控制活塞(4.9),湿式离合器(4.8)的油槽端口与横向油道相接通。
3.按照权利要求2所述的湿式二档自动变速器,其特征是:所述高速输出齿轮(4.11)通过连接花键(4.12)设置于变速轴上。
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Citations (10)
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