汽车底盘构造汽车自动变速器29-3ppt课件共30页

合集下载
  1. 1、下载文档前请自行甄别文档内容的完整性,平台不提供额外的编辑、内容补充、找答案等附加服务。
  2. 2、"仅部分预览"的文档,不可在线预览部分如存在完整性等问题,可反馈申请退款(可完整预览的文档不适用该条件!)。
  3. 3、如文档侵犯您的权益,请联系客服反馈,我们会尽快为您处理(人工客服工作时间:9:00-18:30)。

Animation: One-Way Roller Clutch
Rear Clutch Housing
Roller Clutch
Rear Carrier with Lo & Rev.
Clutch Hub
18
Carrier with Pinions
This carrier has four pinion gears. The carrier is constructed so that it can be held in reaction by a multidisc clutch. It is also
torque converter through a multidisc clutch. It can be the input when the clutch is applied. This ring/ internal gear can be driven by the forward clutch
Parts of a carrier are shown.
10
7.转速及旋转方向
固定件 主动件 从动件 转速 旋转方向
太阳轮 行星架 减速
齿圈
与主动件同向
行星架 太阳轮 加速
齿圈 行星架 减速
太阳轮
与主动件同向
行星架 齿圈 加速
太阳轮 齿圈 减速
行星架
与主动件反向
齿圈 太阳轮 加速

11
Planetenübersetzung Formeltabelle
12
Animation: Clutch Operation
Forward Clutch
Front Ring/ Internal Gear
16
Connections, Output
At least one of the members will be connected to the transmission output shaft so it can transfer torque to the
final drive. Splines are used to connect this front carrier to the output shaft. Note that a complete planetary
gearset is shown with all three members.
三、行星齿轮机构在自动变速器上的应用
➢ 有三个行星排,可组合出四个档位 ➢ 不同行星排有的元件是公用的 ➢ 固定元件的动作由制动器和单向离合器完成
13
Automatic Transmission Gearsets
14
Simple Gear Set
A planetary gear set has three major components: A sun gear in the center, A planet carrier with two or more pinion gears, and A ring/internal gear. These are also
connected to another gearset member.
Planet Pinion Gear
Hub for Lo and Reverse Clutch
19
Planet Pinions
The pinion gears are mounted in the carrier so they can rotate freely on their shaft.
一、行星齿轮机构
行星 齿轮
中心 齿轮
行星 架
齿圈
组装 图
1
2
行星齿轮机构的组成
3
二、行星齿轮变速原理
➢ 行星轮力平衡条件:
F1=F2
F3=-2F1
r
➢ 三元件上的力矩分别为:
太阳轮M1=F1r1
∵α=z2/z1=r2/r1,
r3=(r1+r2)/2
∴齿圈M2=F2r2=αF1r1 ∴行星架 M3=F3r3=-(α+1)F1r1 ➢ 能量守恒三元件输入和输出功率
called members.
Carrier with Planet Pinion
Gears
Ring/Internal Gear
Sun Gear
15
Connections, Input
At least one, or two, of these members will be connected to the
行星架和太阳 轮转向相同。
8
5.变速原理(减速)
当太阳轮固 定齿圈输入, 行星架输出时 为减速传动, 传动比为:
i=n2/n3=1+1/α
齿圈和行星架 转向相同。
9
6.变速原理(倒挡)
当行星架固定, 太阳轮输入, 齿圈输出时, 为减速传动, 传动比为: n1+αn2-(1+α)n3=0 ∵n3=0 ∴n1/n2=-α 太阳轮和齿圈 转向相反。
的代数和等于零
M1ω1+Mω2+Mω3=0
➢ n +αn -(1+α)n =0
4
1.行星齿轮机构变速比计算
传动比i=从动件齿
数/主动件齿数
n1+αn2-(1+α)n3=0
5
2.变速原理(加速)
当太阳轮固定,行星架 输入,齿圈输出时传 动比为:
n1+αn2-(1+α)n3=0 ∵n1=0 ∴i=n3/n2=α/(1+1/α)<1
Splines Front Carrier
Output Shaft
17
Connections, Reaction
When a gear ratio change is desired, one of the members must be held stationary in reaction. This carrier can be held by a roller clutch or multidisc clutch. A band is also used to hold the reaction member.
➢ 为超速传动
➢ 行星架和齿圈转向相同。
6
3.变速原理(加速)
当齿圈固定, 行星架输入, 太阳轮输出时 为超速传动, 传动比为: i=n3/n1=α/(1+α)<1 行星架和太阳 轮转向相同。
7
4.变速原理(减速)
当齿圈固定, 太阳轮输入, 行星架输出时 为减速传动, 传动比为:
i=n1/n3=1+α
相关文档
最新文档