| 摘要 |
PROBLEM TO BE SOLVED: To provide a calibration device capable of acquiring an accurate calibration value in calibration for applying reference load in a horizontal direction in a tire uniformity measuring apparatus. SOLUTION: A calibration device 1 including a load wheel 30 for receiving load from a rotationally driven tire W to calibrate the tire uniformity measuring apparatus for measuring the uniformity of the tire W based on the load applied to the load wheel 30 includes: a pressing part for pressing the outer peripheral surface of the load wheel 30; a locking part for locking a wire 6 to which a weight 5 is connected; a lever 3 having a fulcrum part supported by the fulcrum between the pressing part and the locking part; a pulley 2 around which the wire 6 is wound; and a support part for supporting the pulley 2. The pulley 2 has edge parts formed on both side surfaces and having tips passing through a center axis of the pulley 2, and the tips of the edge parts are linearly brought into contact with the support part to support the pulley 2 by the support part. COPYRIGHT: (C)2012,JPO&INPIT |
