Vibration absorption mechanism of self-actuated reactor shutdown mechanism

摘要

PURPOSE:To provide a vibration absorbing mechanism installed between an armature and a control rod to prevent the bending moment from being transferred to the attaching face between an electromagnet and the armature when the control rod is rolled and the bending moment is generated. CONSTITUTION:A connection section 30 fitted at the upper end of a control rod is suspended and hooked on a connection section 20 fitted at the lower end of an armature 11 via a spherical rolling contact joint constituted of a spherical surface 31 and a spherical seat 21 receiving it. When a control rod 12 is rolled, the spherical surface 31 and the spherical seat 21 are brought into rolling contact, only the control rod upper end connection section 30 suspended from the joint section and the control rod perform pendulum motion, and they absorb the vibration applied to the control rod 12.