Regulating rod drive of nuclear reactor

A regulating rod drive of a nuclear reactor, comprising a guide tube and a signalling device to signal the engagement of the drive with the regulating rod, which signalling device is installed in a hermetically sealed housing and includes a spring-loaded sensing rod, whereof one end interacts with the regulating rod, and an armature of a ferromagnetic material. Also placed in said housing and kinematically interconnected are a grip control mechanism comprising a rotary tube coupled to a control pin which controls profiled grips, and a bar driving mechanism having a bar with said profiled grips and a disengaging means including a driving element connected via a self-braking reduction gear to an electromotor arranged outside the hermetically sealed housing and a driven element connected to a gear of a kinematic pair for the conversion of rotative motion into reciprocating motion, whose toothed member is coupled to the bar, the upper portion of said toothed member being placed in a jacket, whereupon there is mounted an inductive transducer of the lower position of the regulating rod, and a means to transmit the torque of the electromotor, which is rigidly coupled to the electromotor shaft, the profiled grips control mechanism and the bar driving mechanism, which is also electromagnetically coupled to the signalling device for signalling the engagement of the drive with the regulating rod and interacts with the guide tube mounted on the drive housing.