Device for measuring rotating speed and displacement of main shaft of hydraulic turbine unit

The utility model discloses a rotating speed and displacement measuring device for a main shaft of a hydraulic turbine unit, which comprises the main shaft rotationally supported by a bearing body, a measuring disc arranged at a non-driving end of the main shaft, a bearing gland arranged at the outer end of the bearing body, and a bearing end cover arranged at the outer end of the bearing gland, a plurality of notches are evenly formed in the outer circumference of the measuring disc, a rotating speed sensor is arranged on the outer circumference of the bearing gland and is perpendicular to the main shaft, and the front end of the rotating speed sensor is matched with the outer circumference of the measuring disc. The axial displacement sensor is perpendicular to the corresponding end face of the measuring disc, and a set gap is formed between the front end of the axial displacement sensor and the measuring disc. 本实用新型公开了一种液力透平机组主轴转速及位移测量装置，包括由轴承体进行转动支承的主轴，还包括装设在主轴非驱动端的测量盘，装设在轴承体外端的轴承压盖以及安装在轴承压盖外端的轴承端盖，测量盘外圆周