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学生手工制作拉线回力车小发条惯性回力车小制作模型材拉线小车

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    ¥3.1
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    ¥3.0
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  • 3 set
  • Exchage Rate 1 CNY ≈ 0.1419 USD
  • Weight 1.0 kg/set
  • Stock num 5558 set
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  • Description
 
 
 
 

拉线回力车

 

回力车是根据它的的后胎连接的“轴”与回力齿轮内的齿轮固定相连,当手向后对车做功(拖)时,后轮向后旋转,通过轴传递力给回力齿轮做功,齿轮带动回力齿轮结构(弹簧结构或橡皮筋结构)将手做的动能转化为势能(例如橡皮筋旋转拉长或弹簧压缩等等)

当手放开时,小车失去了保持其平衡的一个力,即通过手压车时车后胎与地面间被增大了的摩擦力(即F1中通常所说的抓地力),回力齿轮便反向通过轴释放势能做功,于是轴通过旋转将势能转化为功能。

 

由于通常回力车被设计成后轮前转驱动(即在车左看车轮为逆时针),回力齿轮便被设计成后转储能(即在车左看车轮为顺时针),又因为通常车轴的固定性方向,所以只要回力齿轮蓄的能够大(即转数够多)或与地面间的静摩擦力够小,回力车便可以通过回力齿轮这个心脏的能量输出前进

-简单的说,就是回力车“记住”了你给它的力量

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主图 (2) - 副本

 

 

Update time:20240827105934


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