Figure 3.6. Lock of the docking frame (Soyuz APDA). 1. passive clamp; 2. axis of rotation during firing; 3. taring of the spring; 4. pyrotechnic bolt; 5. pulley; 6. eccentric shaft; 7. closure sensor. Of great importance is the monitoring of the state of the lock system during preparation for flight and during flight. The locks use telemetric sensors which indicate the closed position of the active clamps (Figure 3.6), which makes it possible to monitor the linkage of all clamps and their tightening. For more uniform distribution of the forces on the locks on the forward flange of the docking frame, the width of the casing of the lock and, consequently, the support base, was specially increased, which was equivalent to an increase in the number of locks. The lock has active and passive clamps. The eccentric shaft of the active clamp is installed on needle-like bearings which have a high support capacity; however, when these bearings rotated, significant axial forces were created. Thus, the mechanism has additional ball bearings, which play the role of two-sided supports. In locks designed for one-time short-term docking, to decrease the size and mass of the construction, only ball bearings can be used, for example, cageless low-rotation bail bearings with increased bearing capacity. These ball
RkJQdWJsaXNoZXIy MTU5NjU0Mg==