US 11,933,327 B2 · Hydraulic actuator with no friction and zero leakage, and its drive system

Abstract

A hydraulic actuator with no friction and zero leakage and its drive system are provided. The hydraulic actuator includes a thickened disc structure A and a thickened disc structure B. The second end face of the thickened disc structure A is connected with the first end face of the thickened disc structure B, and a control cavity is formed between the second end face of the thickened disc structure A and the first end face of the thickened disc structure B. The drive oil access hole is arranged on the thickened disc structure B, and the control cavity is connected with the drive oil access hole. The displacement output method based on elastic deformation is adopted, which completely avoids the nonlinear phenomena such as leakage and friction, and reduces the difficulty of high-precision control of the actuator.

Claims16

Dependent claims

A hydraulic actuator with no friction and zero leakage, comprising a first thickened disc structure and a second thickened disc structure;

a second end face of the first thickened disc structure is connected to a first end face of the second thickened disc structure, and a control cavity is formed between the second end face of the first thickened disc structure and the first end face of the second thickened disc structure, a drive oil access hole is set on the second thickened disc structure, and the control cavity is connected with the drive oil access hole;
a convex platform is set on a first end face of the first thickened disc structure, and an installation flange is set on a second end face of the second thickened disc structure.

A hydraulic actuator with no friction and zero leakage, comprising a disc actuator I and a disc actuator II;

the disc actuator I and the disc actuator II each comprise a first thickened disc structure and a second thickened disc structure;
a second end face of the first thickened disc structure is connected to a first end face of the second thickened disc structure, and a control cavity is formed between the second end face of the first thickened disc structure and the first end face of the second thickened disc structure;
the control cavity of the disc actuator I is connected to the control cavity of the disc actuator II, and a drive oil access hole is set on the second thickened disc structure of the disc actuator I;
and
the drive oil access hole is connected with the control cavity of the disc actuator I.

2 more elements

Dependencies are inferred from the claim text.

Hydraulic actuator with no friction and zero leakage, and its drive system

Life of this patent

Hydraulic actuator with no friction and zero leakage, and its drive system

Life of this patent

Abstract

Claims16