CAM BRAKE AUTOMATIC SLACK ADJUSTING MECHANISM

摘要

1510395 Automatically adjustable brake actuators ROCKWELL INTERNATIONAL CORP 4 Feb 1976 [3 March 1975] 04314/76 Heading F2E On application of the brake by lever 40 a link 61, 55 causes a plunger 51 to move axially when the application stroke is excessively long and a spring-loaded detent 71 co-operating with threads on the plunger rotates the latter during the return stroke to effect stroke adjustment. The link is connected to a piston 54 movable between abutments in the plunger interior with lost-motion d. The threads of detent 71 are buttressed and the actuating stroke must be greater than d plus the movement necessary for a plunger tooth to ride over a tooth of the detent before adjustment will occur on the return stroke. The plunger is splined to the shaft 46 of the conventional worm 45; the output shaft 19 of the worm gear 74 effects rotation of the actuating cam of a drum or disc brake.