
滑车组;滑轮组
I finally hoisted him up with a block and tackle.
我最终用滑轮组把他拉了上去。
I finally hoisted him up with a block and tackle.
我最终用滑轮组把他吊了上去。
When opening, carrying or installing it, please use block and tackle, chain block, fork lift truck or other assistant devices.
在开箱·搬运·安装时,请使用吊滑轮,起重机,叉式升运机等辅助设备。
The drilling line is reeled over the crown block and traveling block to gain mechanical advantage in a block and tackle or pulley fashion.
钻井用钢丝绳通过天车和游动滑车以滑轮组的形式获得机械上效益。
The problem about mechanical efficiency of tackle-block is the key point in junior high school mechanics and also the difficult point.
滑轮组机械效率问题是初中力学中的重点,也是初中力学解题的难点。
|tackle block/sheave block;[机]滑车组;滑轮组
Block and Tackle(滑轮组)是由多个滑轮(定滑轮和动滑轮)与绳索组合而成的机械装置,主要用于改变力的方向或实现省力效果。其核心原理是通过分散负载,以较小的输入力提升较重的物体。
滑轮组的机械优势(Mechanical Advantage, MA)取决于动滑轮数量与绳索段数。例如:
$$ MA = frac{F{text{输出}}}{F{text{输入}}} = frac{text{支撑负载的绳索段数}}{text{摩擦系数}} $$
理想状态下(忽略摩擦),MA等于直接提升负载的绳索段数。例如,4段绳索的滑轮组理论可省力75%。
通过合理配置滑轮数量与绳索走向,滑轮组在提升效率与安全性上始终是基础机械传动的核心解决方案。
“block and tackle” 是一个机械工程领域的术语,具体解释如下:
如需了解更多示例或历史背景,可参考海词词典和沪江英语的详细解析。
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