DEVICE FOR MEASURING UNDULATION OF BRAKE DISC IN RAILWAY WHEEL WITH BRAKE DISCS

摘要

A device for measuring undulation of a brake disc in a railway wheel with brake discs includes a wheel support supporting a hub's bore of the railway wheel; a first displacement gauge for measuring a height displacement of the brake disc frictional surface for one round to follow rotation of the wheel support; and a second displacement gauge for measuring a height displacement of a railway wheel rim surface for one round to follow rotation of the wheel support. A computing unit calculates a difference between maximum and minimum values of the height displacement of the frictional surface by acquiring measurement data from the first displacement gauge, calculates a difference between the maximum and minimum values of the height displacement of the rim's surface by acquiring measurement data from the second displacement gauge, and derives a difference between the both calculated differences as brake disc undulation.

主权项

1. A device for measuring undulation of a brake disc in a railway wheel with brake discs, a pair of brake discs being arranged to face each other across a web of a railway wheel, the brake disc being fastened to the railway wheel by bolts, the device comprising:
a wheel support supporting a hub's bore of the railway wheel, and rotating about a central axis of the railway wheel; a first displacement gauge provided to face a frictional surface of one of the brake discs, and measuring a height displacement of the frictional surface for one round to follow rotation of the wheel support; a second displacement gauge provided to face a rim's surface of the railway wheel on a side of the frictional surface, and measuring a height displacement of the rim's surface for one round to follow the rotation of the wheel support; and a computing unit calculating a difference between a maximum value and a minimum value of the height displacement of the frictional surface by acquiring measurement data from the first displacement gauge, calculating a difference between a maximum value and a minimum value of the height displacement of the rim's surface by acquiring measurement data from the second displacement gauge, and deriving a difference between the both calculated differences as undulation of the brake disc.