| 摘要 |
<p>A fluid operated actuator for activating the clutch mechanism of a clutchoperated cable drum is disclosed wherein the clutch mechanism rotates with a shaft upon which the cable drum is jouralled and is operable to engage the cable drum for rotation with the shaft by axially displacing a portion of the clutch mechanism. The actuator, which is cylindrical in geometry and includes a cylindrical bore, is engaged to the end of the rotating shaft and being adjacent to the axially displacing portion of the clutch mechanism. A piston is slidably retained in the actuator bore and a number of circumferentially spaced apart thrust pins that are slidably retained in openings of the actuator endwall structurally link the piston with an annular plate that is positioned between the actuator endwall and the axially displaceable portion of the clutch. As fluid pressure is introduced into the cylindrical bore through a rotary fluid coupling in the opposite endwall of the actuator, the piston forces the thrust pins and annular plate against the clutch mechanism to axially displaced the clutch mechanism and engage the cable drum to the rotatable shaft.</p> |
