ELECTROHYDRAULIC REMOTE ACTUATOR Russian patent published in 2005 - IPC

FIELD: mechanical engineering.

SUBSTANCE: actuator comprises main control channels made of controller and feedback pickup connected with the main electrohydraulic distributor through a logic unit. The reserve channels, at least one of which is made of press button switches, are connected in parallel to the hydraulic distributor. The press button switches are connected to the reserve power source from one side and to the reserve electrohydraulic distributor from the other side and are connected to the logic AND circuits through the logic OR circuit and storage unit . The AND circuits are connected between the logic unit and the main electrohydraulic distributor. At least one of the hydraulic passages has throttle between the main electrohydraulic distributor and actuator. The additional electrohydraulic stop valve is connected to the hydraulic passage in parallel to the throttle. The actuator has a chamber provided with the conical braking surface and braking device made of spring-loaded braking conical sleeve that reciprocates on the output shaft and is in a contact with the conical braking surface of the housing. The hydraulic chamber of the braking device is in communication with the pressure and drain pipelines through hydraulic spaces in the additional electrohydraulic distributor.

EFFECT: increased speed of response.

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