Phonic wheel formula switching axle

The utility model provides a phonic wheel formula switching axle, it includes mounting flange, motor output switching axle, phonic wheel and is used for fixed mounting magnetic sensor's fixed bolster, the phonic wheel is fixed motor output switching is epaxial, motor output switching axle sleeve dress is on speed sensor test equipment's motor output shaft, mounting flange includes outer ultrasion vibration sysytem, interior ultrasion vibration sysytem and transition drum, be equipped with the opening on the transition drum, motor output switching axle sets up in the transition drum, interior ultrasion vibration sysytem fixes on speed sensor test equipment, outer ultrasion vibration sysytem opens all around has the installation through -hole, during the test, alternator formula speed sensor fixes the ring flange outside on the ultrasion vibration sysytem through the installation through -hole, and alternator formula speed sensor's pivot receives motor drive rotatory, and magnetism speed sensor passes through the fixed bolster and installs on mounting flange, just to the phonic wheel, receives the phonic wheel excitation production signal of telecommunication.