变速原理 ：换挡原理 ：变向原理 ： Doublestage gear-driven sketch map Forward block Back block gear-driven steering relation 第一轴 first shaft 第一轴常啮合传动齿轮first shaft mesh driven gear 第一轴齿轮接合齿圈 first gear jointing annulus 六挡同步器锁环sixth synchronizer lock ring 接合套jointing suite 五挡同步器锁环fifth synchronizer lock ring 五挡齿轮接合齿圈fifth gear jointing annulus 第二轴五挡齿轮second fifth gear 第二轴四挡齿轮 second shaft fourth gear 四挡齿轮接合齿圈 fourth gear jointing annulus 四挡同步器锁环fourth synchronizer lock ring 第二轴三挡齿轮 second shaft third gear 第二轴二挡齿轮 second shaft second gear 二挡齿轮接 合齿圈 second gear jointing annulus 第二轴一挡 齿轮second shaft first gear 接合套 jointing suite 接合套 jointing suite 倒挡齿轮接合齿圈back action gear jointing annulus 第二轴倒挡齿轮 second shaft back action gear 接合套 jointing suite 第二轴 Second shaft 花键毂 spline hub 中间轴倒挡齿轮 middle shaft back action gear 倒挡中间齿轮back action middle gear 中间轴一挡齿轮 middle shaft first gear 中间轴二挡齿轮 middle shaft second gear 中间轴三挡齿轮 middle shaft third gear 中间轴四挡齿轮 middle shaft fourth gear 中间轴五挡齿轮 middle shaft fivth gear 中间轴常啮合传动齿轮 middle shaft mesh driven gear 中间轴middle shaft 到挡轴back action shaft 三轴变速器three shaft transmission Horizontal placed engine doubleshaft mission 输入轴input shaft 一挡主动齿轮first driving gear 倒挡主动齿轮back action driving gear 二挡主动齿轮seconde drive gear 三挡主动齿轮third drive gear 四挡主动齿轮 Fourth drive gear 输出轴 output shaft 四挡从动齿轮fourth driven gear 三四挡同步器接合套third、 fourth balking ring 三挡从动齿轮third driven gear 二挡从动齿轮 seconde driven gear 接合套Jointing suite 一挡从动齿轮first driven gear 主减速器从动齿轮main retarder driven gear 差速器diff 主减速器从动齿轮main retarder driven gear 接合齿圈 jointing annulus 第二轴seconde shaft section plan 第一轴first shaft 滚针轴承 needle bearing 接合齿圈 jointing annulus 锁环circlet 滑块slider 定位销knockpin 接合套jointing suite 锁环circlet 齿轮gear 衬套bush 卡环snap ring 卡环snap ring 卡环snap ring 滚针轴承needle bearing 花键毂spline hub 弹簧spring 齿轮gear 挡圈sprag check ring balking ring sketch map 2 outside view 锁环circlet 接合套jointing suite 花键毂spline hub 弹簧spring 滑块slider定位销knockpin 锁环circlet 接合齿圈 Jointing annulus 摩擦锥盘cone of friction 摩擦锥环cone of friction ring定位销 knockpin 接合套 Jointing suite 接合齿圈 Jointing annulus 第二轴 seconde shaft 锁销lockpin 花键毂spline hub Lockpin interia synchronizer 锁销lockpin 接合套 Jointing suite 接合套 Jointing suite 定位销 knockpin 钢球 friction ball 弹簧spring back action shifting fork mission shift drive sketch map pressure spring self locking pin changeover governor elect block shaft declutch shift shaft Five shifting fork Five adapterskirt Five shifting plate three、four shifting fork Three shifting fork stick shift dolly bar stick shift hound rod drive link Buttonhead deflector rod ball socket deflector rod drive link footstep 换挡轴 change lever 拨叉shifting fork拨叉shifting fork拨叉shifting fork拨叉shifting fork 拨块shifting junk 倒挡back action shifting junk 倒挡拨叉 轴back action shifting fork shaft 拨叉轴 shifting junk shaft 换挡轴changeover governor shaft 叉形拨杆 forkdeflector rod 拨块shifting junk 自锁弹簧self locking spring 自锁钢球self locking friction ball 互锁销mutual cotter Orientation friction ball Orientation spring declutch shift shaft Mutual lockup pin Mutual lockup friction ball Transmission cover Transmision lockup set Orientation friction ball declutch shift shaft declutch shift shaft declutch shift shaft Mutual lockup friction ball Mutual lockup pin gearlever reverse gear dial set reverse gear spring reverse gear pin Spring lockpin reverse gear pin BJ212 doubleshaft land cruiserpower transfer sketch map Flange set driving gear input shaft Middle shaft pinion Back axle output shaft front axle joint sleeveSpline gear front axle output shaft Regularity mesh high gear Shift slide gear middle shaft big gear 。