| 摘要 |
<p>An electronic pull-ruler for laser tracking positioning in a wheel dynamic balancer comprises a ruler head (1), an outer pole (2), an inner pole (3), a bracket (4), a linear resistor (5), a sliding rail (6), a carbon brush assembly (7), a rotation shaft (8), a shaft sleeve (9), a potentiometer assembly (10) and a photoelectric sensor (11). The ruler head (1) is composed of a motor fixing base (12), a step motor (13), a rotation head (14), an optical dot laser indicator (15) and a first jacking screw (16). The photoelectric sensor (11) is fixed on the outer wall of the front end of the inner pole (3). The front end of the inner pole (3) is fixed and connected with the rear end of the motor fixing base (12). The step motor (13) is fixed within the motor fixing base (12). The driving output shaft of the step motor (13) is fixed and connected with the rotation head (14) on the motor fixing base (12). The optical dot laser indicator (15) and the first jacking screw (16) are fixed on the rotation head (14). The first jacking screw (16) is positioned on a circumference corresponding to the groove (17) of the photoelectric sensor (11).</p> |
