小猴爬杆

• 作 者: 韩志毅
• 出 处: 小学科技
• 发表日期: 2004年期
• 关键词: 小猴 爬杆 向上爬 提水 工作原理 圆片 轴旋转 灌溉农田 中心孔 线刻

风车,是人类最早发明的一种利用风能的装置。在3000多年前,古希腊人就开始使用风车来提水、灌溉农田、磨制面粉了。我国的风车最早出现于汉朝,至今也有2000多年的历史。“小猴爬杆”是一件利用风作动力的科学小玩具,它的工作原理与风车有些相似。在风的吹动下,叶轮带动转轴旋转,并将悬挂小猴的细线卷绕起来,于是小猴就顺着竹签向上爬去。如果叶轮不转,在重力作用下小猴自动降落,遇风又再次爬升,周而复始,很是有趣。

Windmill, is one of the earliest human invention of wind energy using the device. More than 3,000 years ago, the ancient Greeks began using windmills to lift water, irrigate farmlands and mill flour. Our country's windmill first appeared in the Han Dynasty, so far it has a history of more than 2,000 years. “Monkey climb pole” is a science-based toy powered by the wind, and its working principle is somewhat similar to a windmill. In the wind blowing, the impeller drive shaft rotation, and hang the monkey's thin thread winding up, so the monkey along the bamboo sticks to climb up. If the impeller does not turn, the monkey automatically falls under the action of gravity, and the wind climbs again and again and again. It is very interesting.