SIMPLIFIED LINK DEVICE IN OIL DISTRIBUTION BOX OF CONTROLLABLE PITCH PROPELLER SYSTEM

PURPOSE: A simplified link device in an oil distribution box of a controllable pitch propeller system is provided to reduce the failure rate and the weight of the oil distribution box. CONSTITUTION: A simplified link device in an oil distribution box of a controllable pitch propeller system comprises a guide pipe, a yoke(2), a bearing assembly(3), and a shaft(4). The guide pipe is connected to the shaft on top and pivoted around the connection part. The yoke is inserted in the hollow(B) of the guide pipe on top and connected to the bearing assembly on bottom, and is pivoted around the connection part. The bearing assembly induces the angular motion of the yoke by moving back and forth along with a dual hydraulic pipe(5) reciprocating back and forth. The shaft transfers the angular motion of the guide pipe to a pitch angle meter connected to the exterior of the oil distribution box.