滑轮是由可绕中心轴转动有沟槽的圆盘和跨过圆盘的柔索(绳、胶带、钢索、链条等)所组成的可以绕着中心轴转动的简单机械。可看作变形的杠杆。属于杠杆类简单机械。关于滑轮的绘品最早出现于一幅西元前八世纪的亚述浮雕。这浮雕展示的是一种非常简单的滑轮,只能改变施力方向,主要目的是为了方便施力,并不会给出其它任何机械利益。在中国,滑轮装置的绘制最早出现于汉代的画像砖、陶井模。阿基米德贡献出很多关于简单机械的知识,详细地解释滑轮 The pulley is a simple machine that can be rotated around a central axis, consisting of a circular disk that rotates around a central axis and a flexible cable that runs across the disk (rope, tape, wire rope, chain, etc.). Can be seen as a lever of deformation. Belongs to simple mechanical class. Pictorials on pulleys first appeared in an Assyrian relief from the eighth century BC. This relief shows a very simple pulley that can only change the direction of force, the main purpose is to facilitate the application of force, does not give any other mechanical benefits. In China, the sketch of pulley device first appeared in the Han Dynasty portrait brick, Tao mold. Archimedes contributed a lot of knowledge about simple machines, explaining pulleys in detail