| 摘要 |
PURPOSE:To detect the damage of a bearing during operation at an early stage, by providing electrodes constituting a capacitor using a lubricant as a dielectric material between a rotary shaft and the condenser itself in the side of a bearing metal and measuring the apparent dielectric constant of the lubricant. CONSTITUTION:Electrodes 5, 6 are embedded in a bearing metal 1 in an insulated state through insulators 7, 8 and displacement measuring devices 9, 10 are fixed to the outside of a bearing metal 2. The electrodes 5, 6 are connected to an electrostatic capacity meter 11 through lead wires 5a, 5b and the outputs of the displacement measuring devices 9, 10 are guided to a damage discrimation circuit 13 through leads 9a, 10a. |
