TESTING HYDRAULIC SERVO MACHINE FOR MECHANICAL TESTING OF MATERIALS

摘要

testing equipment. SUBSTANCE: proposed machine has loading gear with upper mobile gripper, hydraulic servo system of loading and control over loading parameters, actuating mechanism of return of electric displacement transducer to zero position. Hydraulic servo system includes pump plant, servo valve and device measuring displacement of active gripper which is electric displacement transducer. Servo valve has displacement feedback with electric displacement transducer. Actuating mechanism of return of electric displacement transducer to zero position is manufactured in the form of rack-and-gear drive-reduction gear with electric motor and rack. EFFECT: increased precision of measurement of movement and productivity of tests thanks to automatic keeping of zero position of electric displacement transducer and generation of signal of value of deformation of tested sample. 1 cl, 1 dwg