PICKUP FOR PROTECTING TURBO-MACHINE AGAINST INCREASING SPEED OF SHAFT ROTATION Russian patent published in 1995 - IPC

FIELD: heat power engineering. SUBSTANCE: pickup has ring striker 1. The inner side of the striker is in contact with shaft 3 within the boundaries of the semi-circumference. The cross-section of shaft 3 at this part is made as a square or trapezium having contact surfaces defined by flat surfaces of the shaft. The opposite side of the inner side of the striker is positioned equidistantly to flat surfaces of shaft 3 or curved side of the shaft defined by the radius. The roller of the stop member is provided with stop 8 positioned in the body of the ring striker and made up as a lock screw. The pickup can be provided with the pair of the strikers which are mounted on the shaft having contact surfaces pointing in opposite directions. EFFECT: enhanced reliability. 6 cl, 4 dwg