| 摘要 |
PURPOSE: A relative displacement measuring apparatus is provided to obtain a three dimensional position of an axle and position data thereof by measuring a relative displacement between a body frame and the axle. CONSTITUTION: A relative displacement measuring apparatus includes a housing(30) installed between a body frame(10) and an axle(20) of a vehicle. The housing(30) is formed at an upper surface thereof with a plurality of perforation holes, which is aligned in a circular pattern. A lifting shaft(40) is movably installed in the perforation holes. An upper end of the lifting shaft(40) makes contact with the body frame(10). A probe(50) is arranged at a lower portion of the lifting shaft(40) in such a manner that a lower end of the probe(50) makes contact with the axle(20). A position sensor(60) is connected to the probe(50) so as to detect a relative displacement between the body frame(10) and the axle(20).
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