Wheel steel wire tension measuring device, tension adjusting equipment and tension adjusting method

The invention provides a wheel steel wire tension measuring device, tension adjusting equipment and tension adjusting method. The wheel steel wire tension measuring device comprises a wheel steel wire having vibration frequency, an incident light source, a light sensing element and an operational processor. The wheel steel wire vibrates between the incident light source and the light sensing element. The light sensing element receives the incident light source, and the wheel steel wire shields partial incident light source so that the light sensing element is enabled to form a steel wire shaded area. The steel wire shaded area is corresponding to the displacement of the vibrating wheel steel wire, and the light sensing element is enabled to output a steel wire displacement signal. The operational processor is electrically connected with the light sensing element and converts the steel wire displacement signal into a steel wire tension value before calibration. Therefore, the wheel steel wire tension is measur