| 摘要 |
PROBLEM TO BE SOLVED: To achieve structure for receiving the weight of a spindle in a uniformity test without causing the run-out of the spindle by pressing a sliding member toward a direction where the weight due to the press contact of a drum is supported. SOLUTION: A sliding member is pressed in the direction where weight due to the press contact of a rotary drum 30 is supported. More specifically, when an air cylinder 450 is actuated for moving a pusher, biasing is made to a taper surface for moving a block, thus moving a movable housing toward an upper-end 304 of a lock shaft, and bringing two ring members 401 (sliding members) into contact with the upper-end 304 of the lock shaft. In this manner, the weight being applied to a tire T and a spindle 100 by the rotary drum 30 can be supported by a weight support mechanism 400. Even when the spindle 100 may be inclined due to a manufacturing error or the like, the direction where the weight support mechanism 400 biases the spindle 100 is always fixed, thus preventing run-out.
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