However, block and tackle pulleys have made our tasks easier. A good example is the construction of a big project. You must have seen those constructors lift the heavy objects via block and tackle containing more than two pulleys. And that is the perfect example for a block and tackle....
block and tackle 美 英 n.复滑车 网络滑车组 复数:blocks and tackles 权威英汉双解 英汉 英英 网络释义 block-and-tackle n. 1. 滑轮组;滑车组a piece of equipment for lifting heavy objects, which works by a system of ropes and pulleys (= small wheels around which the ropes are stretched) ...
(Mechanical Engineering) a hoisting device in which a rope or chain is passed around a pair of blocks containing one or more pulleys. The upper block is secured overhead and the lower block supports the load, the effort being applied to the free end of the rope or chain ...
Block and tackle, combination of a flexible rope, or cable, and pulleys commonly used to augment pulling force; it can be used to lift heavy weights or to exert large forces in any direction. In the Figure there are four freely rotating pulleys, two on t
A block and tackle is an arrangement of rope and pulleys that allows you to trade force for distance. In this edition of How Stuff Works we will look at how a block and tackle works, and also examine several other force-multiplying devices! Understanding the Block and Tackle Imagine that ...
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block and tackle 英[blɔk ænd ˈtækl] 美[blɑk ənd ˈtækəl] 释义 n. 滑轮,滑车设备 实用场景例句 全部 滑轮 Block and tackle: Combination of pulleys with rope or cable, commonly used to augment pulling force.
A block and tackle or only tackle is a system of two or more pulleys with a rope or cable threaded between them, usually used to lift heavy loads.The pulleys
吊杆滑轮组boom tackle 双滑轮组twin pulley block 吊钩滑轮组hook assembly 双语例句 1. I finally hoisted him up with a block and tackle. 我最终用滑轮组把他拉了上去。 —— 柯林斯例句 2. A pulley or a system of pulleys set in a casing. ...
Once the system is riven, tie a knot at the end of the rope to secure it. To use the block and tackle, fix the standing block to a point, and attach the moving block to whatever you want to move. By pulling on the rope, you will shorten the distance between the two pulleys becau...