OPERATION MACHINE FOR VALVE

摘要

PROBLEM TO BE SOLVED: To provide an operation machine for a valve with a simple structure capable of indicating the same opening as an actual opening by rotating to the same angle as that of an output shaft carrier. SOLUTION: The operation machine for a valve is provided with a casing 42 for retaining an output shaft carrier 51; an input shaft 47 retained by a cover 43 through an opening instructor 45; a first internal gear 49 on an inner surface of the casing; a second internal gear 50; an eccentric bearing 57 retained by the output shaft carrier 51; an outer gear 59 fitted to an eccentric part 58 of the eccentric bearing 57 and engaged with the second internal gear 50; a carrier pin 61 loosely fitted in a pin hole 60 of the outer gear 59 and retained by the output shaft carrier 51; a planetary gear 63 engaged with a sun gear 65 of the input shaft 47 and the internal gear 49; an eccentric bearing 66 for an opening mete for retaining the gear shaft 64 of the planetary gear 63; an outer gear 68 for an opening meter fitted to the eccentric part 67 of the eccentric bearing 66 for an opening meter and engaged with an internal gear 69 for an opening meter; and a carrier pin 71 for an opening meter loosely fitted to a pin hole 70 of the outer gear 68 and retained by the opening instructor 45.