(EN) A control rod drive mechanism (CRDM) comprises a lead screw, a motor threadedly coupled with the lead screw to linearly drive the lead screw in an insertion direction or an opposite withdrawal direction, a latch assembly secured with the lead screw and configured to (i) latch to a connecting rod and to (ii) unlatch from the connecting rod, the connecting rod being free to move in the insertion direction when unlatched, and a release mechanism configured to selectively unlatch the latch assembly from the connecting rod.
(ZH)
控制棒驱动机构(CRDM)包括:导螺杆;螺纹地连接到导螺杆的电动机,其沿着插入方向或相反的拔出方向线性地驱动导螺杆;固定在导螺杆上的闩定组件,其构造成:(i)闩定到连接杆,以及(ii)从连接杆中脱开闩定;连接杆,当闩定件脱开闩定时,连接杆自由地沿插入方向移动;以及释放机构,其构造成有选择地从连接杆中脱开闩定组件的闩定。