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第十章　间歇运动机构

11.1 棘轮机构

11.2 槽轮机构

11.1 棘轮机构

11．1．1 棘轮机构的工作原理及类型

1.棘轮机构的工作原理

2.棘轮机构的分类


双向棘轮机构	回转棘爪双向棘轮机构

双棘爪棘轮机构	内啮合棘轮机构

11．1．2 棘轮转角的调节方法

1.改变主动摇杆摆角的大小调节棘轮的转角

2.利用遮板调节棘轮的转角

利用遮板调节棘轮的转角

11．1．3 棘轮机构的特点及应用

轮齿式棘轮机构有结构简单、工作可靠、棘轮转角的大小可进行有级调节、制造方便等优点，但也有传动时有噪声和冲击，棘轮轮齿易磨损等缺点，所以常用于低速、轻载下实现间歇运动。


牛头刨床	卷扬机制动安全装置(动画演示）

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