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WO2012088860A1 - 变速桥 - Google Patents

变速桥 Download PDF

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Publication number
WO2012088860A1
WO2012088860A1 PCT/CN2011/076457 CN2011076457W WO2012088860A1 WO 2012088860 A1 WO2012088860 A1 WO 2012088860A1 CN 2011076457 W CN2011076457 W CN 2011076457W WO 2012088860 A1 WO2012088860 A1 WO 2012088860A1
Authority
WO
WIPO (PCT)
Prior art keywords
shifting
shaft
gear
transmission
power
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Ceased
Application number
PCT/CN2011/076457
Other languages
English (en)
French (fr)
Inventor
易小刚
李建科
刘昌林
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Hunan Sany Intelligent Control Equipment Co Ltd
Sany Heavy Industry Co Ltd
Original Assignee
Hunan Sany Intelligent Control Equipment Co Ltd
Sany Heavy Industry Co Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Hunan Sany Intelligent Control Equipment Co Ltd, Sany Heavy Industry Co Ltd filed Critical Hunan Sany Intelligent Control Equipment Co Ltd
Publication of WO2012088860A1 publication Critical patent/WO2012088860A1/zh
Anticipated expiration legal-status Critical
Ceased legal-status Critical Current

Links

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60B—VEHICLE WHEELS; CASTORS; AXLES FOR WHEELS OR CASTORS; INCREASING WHEEL ADHESION
    • B60B25/00—Rims built-up of several main parts ; Locking means for the rim parts
    • B60B25/04—Rims with dismountable flange rings, seat rings, or lock rings
    • B60B25/14—Locking means for flange rings or seat rings
    • B60B25/20—Arrangement of screws, bolts, or shouldered pins
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60B—VEHICLE WHEELS; CASTORS; AXLES FOR WHEELS OR CASTORS; INCREASING WHEEL ADHESION
    • B60B23/00—Attaching rim to wheel body
    • B60B23/04—Attaching rim to wheel body by bayonet joint, screw-thread, or like attachments
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60B—VEHICLE WHEELS; CASTORS; AXLES FOR WHEELS OR CASTORS; INCREASING WHEEL ADHESION
    • B60B23/00—Attaching rim to wheel body
    • B60B23/06—Attaching rim to wheel body by screws, bolts, pins, or clips
    • B60B23/10—Attaching rim to wheel body by screws, bolts, pins, or clips arranged axially
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60K—ARRANGEMENT OR MOUNTING OF PROPULSION UNITS OR OF TRANSMISSIONS IN VEHICLES; ARRANGEMENT OR MOUNTING OF PLURAL DIVERSE PRIME-MOVERS IN VEHICLES; AUXILIARY DRIVES FOR VEHICLES; INSTRUMENTATION OR DASHBOARDS FOR VEHICLES; ARRANGEMENTS IN CONNECTION WITH COOLING, AIR INTAKE, GAS EXHAUST OR FUEL SUPPLY OF PROPULSION UNITS IN VEHICLES
    • B60K17/00—Arrangement or mounting of transmissions in vehicles
    • B60K17/04—Arrangement or mounting of transmissions in vehicles characterised by arrangement, location or kind of gearing
    • B60K17/06—Arrangement or mounting of transmissions in vehicles characterised by arrangement, location or kind of gearing of change-speed gearing
    • B60K17/08—Arrangement or mounting of transmissions in vehicles characterised by arrangement, location or kind of gearing of change-speed gearing of mechanical type
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60K—ARRANGEMENT OR MOUNTING OF PROPULSION UNITS OR OF TRANSMISSIONS IN VEHICLES; ARRANGEMENT OR MOUNTING OF PLURAL DIVERSE PRIME-MOVERS IN VEHICLES; AUXILIARY DRIVES FOR VEHICLES; INSTRUMENTATION OR DASHBOARDS FOR VEHICLES; ARRANGEMENTS IN CONNECTION WITH COOLING, AIR INTAKE, GAS EXHAUST OR FUEL SUPPLY OF PROPULSION UNITS IN VEHICLES
    • B60K17/00—Arrangement or mounting of transmissions in vehicles
    • B60K17/04—Arrangement or mounting of transmissions in vehicles characterised by arrangement, location or kind of gearing
    • B60K17/16—Arrangement or mounting of transmissions in vehicles characterised by arrangement, location or kind of gearing of differential gearing
    • B60K17/165—Arrangement or mounting of transmissions in vehicles characterised by arrangement, location or kind of gearing of differential gearing provided between independent half axles
    • 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
    • F16H2200/00—Transmissions for multiple ratios
    • F16H2200/003—Transmissions for multiple ratios characterised by the number of forward speeds
    • F16H2200/0034—Transmissions for multiple ratios characterised by the number of forward speeds the gear ratios comprising two forward speeds
    • 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
    • F16H3/089—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 all of the meshing gears being supported by a pair of parallel shafts, one being the input shaft and the other the output shaft, there being no countershaft involved

Definitions

  • the present invention relates generally to the field of power transmission equipment for vehicles, and more particularly to a shifting bridge that integrates the functions of a transmission, a drive shaft and a transaxle.
  • the power transmission mechanism of the vehicle generally includes a gearbox, a transmission shaft and a drive axle, wherein the gearbox is used for transmitting power and changing different speed ratios of the transmission system to obtain a larger driving speed range; the transmission shaft transmits the power transmission of the transmission.
  • the drive axle is mainly used to realize differential travel between the left and right drive wheels in the transmission system, and further expands the deceleration range of the transmission system and increases the drive torque while transmitting power.
  • the gearbox, transmission shaft and drive axle are three separate components. As shown in Fig. 1, the traditional power transmission route is: engine ⁇ coupling ⁇ hydraulic torque converter ⁇ gearbox 10—Drive shaft 11—Drive axle 12—balance box ⁇ wheel.
  • This structure mainly has the following defects: (1) The installation space of the transmission system is large; (2) The power transmission path is long, the transmission performance is poor, and the transmission efficiency is reduced; (3) The parts are large, the manufacturing is complicated, the manufacturing cost is high, and it is easy. Insufficient faults, etc., which reduces the reliability of the whole machine.
  • the present invention provides a simple and compact structure, few components, low cost, reduced installation space, short power transmission route, high transmission efficiency, and achievable.
  • a shifting bridge that combines shifting, power transmission and drive functions.
  • the present invention adopts the following technical solutions:
  • a shifting bridge includes an axle housing and an integrated transmission system installed in the axle housing, the integrated transmission system including a power input shaft, a shifting device and a differential connected in sequence by a gear, the differential The outputs on both sides are respectively connected to a power output device.
  • a speed reduction device is disposed between the differential and the power output device.
  • the shifting device is a clutch device.
  • a reverse gear is provided in the shifting device.
  • a deceleration shaft is disposed between the shifting device and the differential.
  • the deceleration shaft is coupled to a parking brake.
  • An input gear is fixedly mounted on the power input shaft, and the input gear is meshed with a fixed gear on the shifting device, and three reduction gears are fixedly mounted on the deceleration shaft, and the reduction gears are located on the two sides.
  • a shifting gear is engaged with the shifting gear on the shifting device, and a reduction gear located in the middle meshes with the large gear of the differential.
  • the invention has the advantages that: the shifting bridge of the invention is integrated into a whole by assembling the transmission system in the same axle housing, and the shifting portion and the driving portion are driven by the meshing transmission gears, so that It integrates shifting, power transmission and drive functions.
  • the gearbox, drive shaft and drive axle are three separate components, eliminating the need for couplings and torque converters. And the independent drive shaft components between the gearbox and the drive axle, which reduce the number of components, shorten the power transmission path, and improve the transmission efficiency.
  • the structure is simple and compact, the manufacturing cost is reduced, the required installation space is reduced, and the installation is convenient. The advantages of installation, failure to cause failure, and improved reliability of the whole machine.
  • FIG. 1 is a schematic diagram of a power transmission route of the prior art
  • Figure 2 is a schematic view of the power transmission route of the present invention.
  • Figure 3 is a cross-sectional structural view of the present invention.
  • Figure 4 is a schematic front view showing the structure of the present invention mounted on a frame
  • Figure 5 is a top plan view of the present invention mounted on a frame.
  • the shifting bridge of the present invention comprises a axle housing 8, and the axle housing 8 is provided with an integrated transmission system integrating speed shifting, power transmission and driving functions, and the integrated transmission system includes sequentially
  • the gear input shaft is connected to the power input shaft 1, the shifting device 2 and the differential 4, and the output ends of the differential 4 are connected to a power output device 6 through a speed reducing device 5, and the input end of the speed reducing device 5 is
  • the output of the differential 4 is connected, and the output of the reduction gear 5 is connected to the input of the power take-off 6.
  • the shifting portion and the driving portion transmit power through the meshing transmission gears, which enables the integration of the shifting, power transmission and driving functions, compared to the conventional transmission route.
  • the structure eliminates the coupling, the torque converter and the independent drive shaft components between the transmission and the drive axle, reducing the number of components, shortening the power transmission path, improving the transmission efficiency, and further improving the structure. Simple and compact, the installation space is reduced and easy to install.
  • both ends of the power input shaft 1 are mounted on the axle housing 8 through bearings, and an input gear 101 is fixedly mounted therein, and the input gear 101 meshes with the fixed gear 201 on the shifting device 2.
  • the power input shaft 1 is a hollow short shaft, and the output shaft of the motor 14 is directly fixedly connected with one end of the inner cavity of the power input shaft 1, compared with the conventional transmission route. It eliminates the need for couplings and torque converters and is more compact.
  • a deceleration shaft 3 is provided between the shifting device 2 and the differential 4, and the shifting device 2, the deceleration shaft 3, and the differential 4 are sequentially connected by gear meshing transmission.
  • the shifting device 2 is a selectively coupled multi-speed clutch device including a shifting shaft 202 parallel to the power input shaft 1. Both ends of the shifting shaft 202 are supported by the axle housing 8 via bearings, and are provided at both ends thereof.
  • the shaft end cover has a plurality of oil grooves on the shift shaft 202 for filling the lubricating oil.
  • a fixed gear 201 is disposed in the middle of the shift shaft 202 for engaging with the input gear 101 on the power input shaft 1.
  • the shift shaft 202 is respectively provided with a friction clutch 203 and a shift on both sides of the fixed gear 201.
  • Gear 204, shifting gear 204 is coupled to a corresponding friction clutch 203.
  • the shifting device 2 is also provided with a reverse gear position.
  • the deceleration shaft 3 is disposed in parallel with the power input shaft 1, and the two ends thereof are mounted on the axle housing 8 through bearings.
  • the deceleration shaft 3 is fixedly mounted with three reduction gears 301, wherein the reduction gears 301 and the differential 4 located in the middle
  • the large gears 401 are engaged, and the reduction gears 301 on both sides are selectively meshed with the shifting gears 204 on the shifting device 2, and different powers are output when the different gears in the shifting device 2 are engaged.
  • the deceleration shaft 3 is connected to a parking brake 7.
  • the deceleration device 5 at the output end of the differential 4 is a planetary reduction device
  • the power output device 6 is a half shaft.
  • the end of the half shaft connected to the planetary reduction device is supported on the axle housing 8 by two tapered roller bearings.
  • the other end of the axle shaft extends out of the axle housing 8 and is connected to the drive wheel.
  • the axle housing 8 extends to both sides at a position where the power output device 6 is installed, so as to have a substantially "T" shape as a whole, so as to minimize the outer contour size of the axle housing 8, so that the axle housing 8 is Smaller in size and more compact.
  • the "T"-shaped axle housing 8 is symmetrically provided with a connecting seat fixedly connected to the frame at its two wings, and each side of the connecting seat is provided with four square-shaped connecting holes for threading the bolts 9.
  • the shifting bridge of the present invention is mounted on the bottom of the frame 13 by bolts 9 of eight M24 X 140 which are inserted through the connecting holes in the axle housing 8, and the bolts 9 on the respective connecting seats.
  • the longitudinal distance L3 is 350 mm
  • the lateral distance L1 is 145 mm
  • the distance L2 between the bolts 9 on the inner side of the two connecting seats is 715 mm.
  • Power transmission route the output power of the motor 14 is transmitted to the power input shaft 1 and then the shift gear 2 is driven to rotate via its input gear 101. After the one or more friction clutches 203 in the shifting device 2 are combined, the power is transmitted through the gear 204 is sequentially transmitted to the deceleration shaft 3 and the differential 4, and the differential 4 transmits power to the deceleration devices 5 on both sides, and finally the power output device 6 directly or indirectly outputs power to the drive wheels.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Transportation (AREA)
  • Structure Of Transmissions (AREA)
  • Arrangement Of Transmissions (AREA)

Description

变速桥
【技术领域】
本发明主要涉及到车辆的动力传递设备领域， 特指一种可将变速箱、 传动轴和驱动桥的 功能整合为一体的变速桥。
【背景技术】
车辆的动力传递机构一般包含有变速箱、 传动轴、 驱动桥， 其中变速箱用于传递动力、 变换传动系统不同的速比， 以获得较大的行车速度范围； 传动轴将变速箱的动力传递给驱动 桥； 驱动桥在传动系统中主要用于实现左右驱动轮间的差速行驶， 在传递动力的同时进一步 扩大传动系统的减速范围， 增大驱动扭矩。 在传统的动力传递机构中， 变速箱、 传动轴和驱 动桥为三个独立的部件， 如图 1所示， 传统的动力传递路线为： 发动机→联轴器→液力变矩 器→变速箱 10—传动轴 11—驱动桥 12—平衡箱→车轮。 这种结构主要存在以下缺陷： （1 ) 传动系统的安装空间大； （2)动力传递路线长， 传动性能差、 传动效率降低； （3 )零部件多、 制造复杂、 制造成本高， 且容易产生故障等不足， 从而降低了整机的可靠性。
【发明内容】
本发明所要解决的技术问题是： 针对现有技术存在的技术问题， 本发明提供一种结构简 单紧凑、 零部件少、 成本低、 安装空间减小、 动力传递路线短、 传动效率高、 可集变速、 动 力传递和驱动功能于一体的变速桥。
为解决上述技术问题， 本发明采用以下技术方案：
一种变速桥， 包括桥壳以及装设于桥壳内的一体化传动系统， 所述一体化传动系统包括 通过齿轮依次连接的动力输入轴、 换档装置以及差速器， 所述差速器两侧的输出端分别与一 动力输出装置连接。
作为对本发明的进一步改进：
所述差速器与动力输出装置之间设有减速装置。
所述换档装置为离合器装置。
所述换档装置中设有后退档。
所述换档装置与差速器之间设有减速轴。
所述减速轴与一停车制动器相连。
所述动力输入轴上固定装设有一个输入齿轮， 所述输入齿轮与所述换档装置上的固定齿 轮啮合传动， 所述减速轴上固定装设有三个减速齿轮， 位于两侧的减速齿轮与所述换档装置 上的换档齿轮啮合传动， 位于中间的减速齿轮与所述差速器的大齿轮啮合传动。 与现有技术相比， 本发明的优点在于： 本发明的变速桥， 通过将传动系统装设于同一个 桥壳内整合为一个整体， 变速部分与驱动部分通过相互啮合的传动齿轮传动， 使其能集变速、 动力传递以及驱动功能于一体， 相比传统的动力传递路线中变速箱、 传动轴和驱动桥为三个 独立的部件来说， 其省去了联轴器、 液力变矩器以及连接变速箱和驱动桥之间的独立的传动 轴部件， 使其零部件减少、 动力传递路线缩短、 传动效率提高， 具有结构简单紧凑、 制造成 本降低、 所需的安装空间减小、 便于安装、 不容易产生故障、 整机可靠性提高的优点。
【附图说明】
图 1是现有技术的动力传递路线示意图；
图 2是本发明的动力传递路线示意图；
图 3是本发明的剖视结构示意图；
图 4是本发明装设于车架上的主视结构示意图；
图 5是本发明装设于车架上的俯视结构示意图。
图例说明
1、 动力输入轴； 101、 输入齿轮； 2、 换档装置； 201、 固定齿轮； 202、 换档轴； 203、 摩擦离合器； 204、 换档齿轮； 3、 减速轴； 301、 减速齿轮； 4、 差速器； 401、 大齿轮； 5、 减速装置； 6、 动力输出装置； 7、 停车制动器； 8、 桥壳； 9、 螺栓； 10、 变速箱； 11、 传动 轴； 12、 驱动桥； 13、 车架； 14、 马达。
【具体实施方式】
下面结合具体实施例及附图对本发明作进一步的说明。
如图 2和图 3所示， 本发明的变速桥， 包括桥壳 8， 桥壳 8内装设有集变速、 动力传递 以及驱动功能于一体的一体化传动系统， 该一体化传动系统包括依次通过齿轮啮合传动连接 的动力输入轴 1、换档装置 2以及差速器 4， 差速器 4的两侧输出端均通过一减速装置 5与一 动力输出装置 6连接， 减速装置 5的输入端与差速器 4的输出端连接， 减速装置 5的输出端 与动力输出装置 6的输入端连接。 通过将传动系统整合安装在同一个桥壳中成为一个整体， 变速部分与驱动部分通过相互啮合的传动齿轮传递动力， 使其能集变速、 动力传递以及驱动 功能于一体， 相比传统的传动路线来说， 该结构省去了联轴器、 液力变矩器以及连接变速箱 和驱动桥之间的独立的传动轴部件， 使其零部件减少、 动力传递路线缩短、 传动效率提高， 结构更简单紧凑， 安装空间减小， 便于安装。
本实施例中， 动力输入轴 1的两端通过轴承装设于桥壳 8上， 其中部固定装设有一个输 入齿轮 101， 该输入齿轮 101与换档装置 2上的固定齿轮 201啮合传动。 动力输入轴 1为空 心短轴， 马达 14的输出轴直接与动力输入轴 1的内腔一端固定连接， 相比传统的传动路线， 其省去了联轴器和液力变矩器， 结构更紧凑。
本实施例中， 换档装置 2与差速器 4之间设有一根减速轴 3， 换档装置 2、减速轴 3以及 差速器 4依次通过齿轮啮合传动连接。 换档装置 2为可选择性结合的多档离合器装置， 其包 括与动力输入轴 1平行的换档轴 202， 换档轴 202的两端通过轴承支撑于桥壳 8上， 其两端 设有轴端盖， 换档轴 202上设有多条油槽用于加注润滑油。 换档轴 202中部装设有一个固定 齿轮 201， 用于与动力输入轴 1上的输入齿轮 101啮合， 换档轴 202上于固定齿轮 201的两 侧分别设有一个摩擦离合器 203和一个换档齿轮 204，换档齿轮 204与相应的摩擦离合器 203 连接。 换档装置 2中还设有后退档位。 减速轴 3与动力输入轴 1平行设置， 其两端通过轴承 装设于桥壳 8上， 减速轴 3上固定装设有三个减速齿轮 301， 其中，位于中间的减速齿轮 301 与差速器 4的大齿轮 401啮合， 位于两侧的减速齿轮 301可选择性地与换档装置 2上的换档 齿轮 204啮合传动， 当换档装置 2中的不同档位离合时， 将输出不同的动力。 减速轴 3与一 停车制动器 7相连。
本实施例中， 差速器 4输出端的减速装置 5为行星减速装置， 动力输出装置 6为半轴， 半轴与行星减速装置相连的一端通过两个圆锥滚子轴承支撑于桥壳 8上， 半轴的另一端伸出 桥壳 8外并与驱动轮连接。
本实施例中，桥壳 8于装设动力输出装置 6的位置处向两侧延伸，使其整体呈大致的" T" 字形， 以尽量减小桥壳 8的外轮廓尺寸， 使桥壳 8体积更小， 结构更紧凑。 "T"字形桥壳 8 上于其两翼处对称设有可与车架固定连接的连接座， 每侧的连接座上均设有四个呈方形布置 的连接孔， 用于穿设螺栓 9。 如图 4和图 5所示， 本发明的变速桥通过穿设于桥壳 8上连接 孔内的八个 M24 X 140的螺栓 9装设于车架 13底部， 各连接座上螺栓 9之间的纵向距离 L3 为 350毫米， 横向距离 L1为 145毫米， 两个连接座上靠内侧的螺栓 9之间距离 L2为 715毫 米。
动力传递路线：马达 14的输出动力传递给动力输入轴 1后经其输入齿轮 101驱动换档装 置 2旋转， 换档装置 2中的一个或多个摩擦离合器 203结合后， 动力经其换档齿轮 204依次 传递给减速轴 3和差速器 4， 差速器 4将动力传递给两侧的减速装置 5， 最后由动力输出装置 6将动力直接或间接输出给驱动轮。
以上所述仅是本发明的优选实施方式， 本发明的保护范围并不仅局限于上述实施例， 凡 属于本发明思路下的技术方案均属于本发明的保护范围。 应当指出， 对于本技术领域的普通 技术人员来说， 在不脱离本发明原理前提下的若干改进和润饰， 均应视为本发明的保护范围。

Claims

禾 J 要
1. 一种变速桥， 其特征在于： 包括桥壳 （8) 以及装设于桥壳 （8) 内的一体化传动系 统， 所述一体化传动系统包括通过齿轮依次连接的动力输入轴 （1)、 换档装置 （2) 以及差 速器 （4)， 所述差速器 （4) 两侧的输出端分别与一动力输出装置 （6) 连接。
2. 根据权利要求 1所述的变速桥， 其特征在于： 所述差速器 （4) 与动力输出装置 （6) 之间设有减速装置 （5)。
3. 根据权利要求 1或 2所述的变速桥， 其特征在于： 所述换档装置（2)为离合器装置。
4. 根据权利要求 3所述的变速桥， 其特征在于： 所述换档装置 （2) 中设有后退档。
5. 根据权利要求 1或 2所述的变速桥， 其特征在于： 所述换档装置 （2) 与差速器 （4) 之间设有减速轴 （3)。
6. 根据权利要求 5所述的变速桥， 其特征在于： 所述减速轴 （3) 与一停车制动器 （7) 相连。
7. 根据权利要求 6所述的变速桥， 其特征在于： 所述动力输入轴 （1) 上固定装设有一 个输入齿轮 （101)， 所述输入齿轮 （101) 与所述换档装置 （2) 上的固定齿轮 （201) 啮合 传动， 所述减速轴 （3) 上固定装设有三个减速齿轮 （301)， 位于两侧的减速齿轮 （301) 与 所述换档装置 （2) 上的换档齿轮 （204) 啮合传动， 位于中间的减速齿轮 （301) 与所述差 速器 （4) 的大齿轮 （401) 啮合传动。
PCT/CN2011/076457 2010-12-30 2011-06-28 变速桥 Ceased WO2012088860A1 (zh)

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