Hydro-mechanical actuator

Details Hydro-mechanical actuator Hydro-mechanical actuator

1983-05-02

1985-02-05

Husar, Francis S.

Machine element or mechanism

Mechanical movements

Reciprocating or oscillating to or from alternating rotary

72248, F16H 2520, B21B 3124, B21B 3132

Patent

active

044972156

ABSTRACT:
A hydro-mechanical actuator for adjustably positioning a part, for example a roll carriage of a vertical roll mill stand, is described in which an actuating member having a pusher is mechanically driven to approximate a desired position and then is adjustably displaced by a hydraulic mechanism. The actuator member has a threaded portion which engages a threaded nut secured against rotation by keys; hance rotation of the actuating member will cause its axial displacement. Rotation of the actuating member is by a driving splined sleeve which engages a splined portion of the actuating member. The hydraulic mechanism includes a piston which engages with the threaded nut which can move axially with the actuating member, so that the position of the actuating member, and pusher, can be adjusted by controllably varying the pressure applied to either side of the piston in the cylinder.

REFERENCES:
patent: 3910090 (1974-05-01), Lorenz

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