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制動器的功能、分類、特點與應用

2014-10-26 18:36 作者:管理員17 來源:未知 瀏覽: 字號:

摘要:第3章 制動器 I制動器的功能、分類、特點與應用 制動器是用于機構或機器減速或使其停止的裝 置。有時也用作調節或限制機構或機器的運動速度。 它是保證機構成機器正常安全工作的重要部件。 電力制動(再生制動、渦流制動、反接制動等) 只能消耗機構或機器的一

第3章 制動器
I制動器的功能、分類、特點與應用
    制動器是用于機構或機器減速或使其停止的裝
置。有時也用作調節或限制機構或機器的運動速度。
它是保證機構成機器正常安全工作的重要部件。
    電力制動(再生制動、渦流制動、反接制動等)
只能消耗機構或機器的一部分動能,減小或限制其運
動速度,不能便運動停止。機械式制動器則具有減
速、停止及支持等功能.本章重點論述后者。
    為了減小制動轉矩,縮小制動器尺寸.通常將制
動器裝在機構的高速軸上.或裝在減速器的輸人軸
上。某些安全制動器則裝在低速軸或卷簡軸上,以防
在傳動機構中斷軸時物品的墜落。特殊情況下也有將
制動器裝在其他軸上的。
    按工作狀態分,制動器可分為常閉式和常開式。
常閉式制動器靠彈筑或重力的作用經常處于緊閘狀
態,而機構運行時,則用人力或松網器使制動器松
閘。與此相反,常開式制動器經常處于松閘狀態,只
有施加外力時才能使其緊閘。
    制動器主要由制動架、摩擦元件和松閘器等所組
成。許多制動器還裝有自動調整間隙的裝置o
    常用制動器性能特點及應用見表13.3-1。
常用制動器性能特點及應用

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