Hydraulic ventilating flap actuator system - has first lever operated by pushing cylinder and second lever operated by pulling cylinder

摘要

The ventilation flap control system has two actuator cylinders connected to the ends of tw operating arms, one cylinder pushing its arm, the other pushing the second arm. The arms are supported by cables passing over pulleys. The two cylinders are connected to a hydraulic circuit, controlled by an electronic pulse system. This operates two electromagnetic valves for parallel lines each with a control valve, and a further set of manual valves by which the system can be controlled. Purge valves are fitted on the supply line and the lines connected to the operating cylinder. Their supply is also controlled by two three way valves at the input end.