| 摘要 |
<p>PURPOSE:To make the travel distance of a travel car measurable in an accurate manner. CONSTITUTION:Since a driven wheel in a oblique position in relation to a driving wheel 13 is used as a speed detecting wheel 14 to which an encoder 15 is connected, if merely taking care that a lower end of this speed detecting wheel 14 is made so as not to become the highest, this wheel 14 is made contact with a guide rail 1 surely at all times, namely, any racing is prevented and wheel revolution (travel distance) is surely findable.</p> |
