
滑車組;滑輪組
I finally hoisted him up with a block and tackle.
我最終用滑輪組把他拉了上去。
I finally hoisted him up with a block and tackle.
我最終用滑輪組把他吊了上去。
When opening, carrying or installing it, please use block and tackle, chain block, fork lift truck or other assistant devices.
在開箱·搬運·安裝時,請使用吊滑輪,起重機,叉式升運機等輔助設備。
The drilling line is reeled over the crown block and traveling block to gain mechanical advantage in a block and tackle or pulley fashion.
鑽井用鋼絲繩通過天車和遊動滑車以滑輪組的形式獲得機械上效益。
The problem about mechanical efficiency of tackle-block is the key point in junior high school mechanics and also the difficult point.
滑輪組機械效率問題是初中力學中的重點,也是初中力學解題的難點。
|tackle block/sheave block;[機]滑車組;滑輪組
Block and Tackle(滑輪組)是由多個滑輪(定滑輪和動滑輪)與繩索組合而成的機械裝置,主要用于改變力的方向或實現省力效果。其核心原理是通過分散負載,以較小的輸入力提升較重的物體。
滑輪組的機械優勢(Mechanical Advantage, MA)取決于動滑輪數量與繩索段數。例如:
$$ MA = frac{F{text{輸出}}}{F{text{輸入}}} = frac{text{支撐負載的繩索段數}}{text{摩擦系數}} $$
理想狀态下(忽略摩擦),MA等于直接提升負載的繩索段數。例如,4段繩索的滑輪組理論可省力75%。
通過合理配置滑輪數量與繩索走向,滑輪組在提升效率與安全性上始終是基礎機械傳動的核心解決方案。
“block and tackle” 是一個機械工程領域的術語,具體解釋如下:
如需了解更多示例或曆史背景,可參考海詞詞典和滬江英語的詳細解析。
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