Hydraulic actuator arrangement
AssigneeCaterpillar Inc.
InventorsOliver Martyn Hayes, Simon Richard Conway
Life of this patent
Estimating the term…
Abstract
A hydraulic actuator with a sensor mounted on the actuator cylinder for determining the position of the actuator. The arrangement comprises a hydraulic actuator which includes a cylinder having a bore in which a piston is slidably mounted for movement along the cylinder to extend and retract the hydraulic actuator. The cylinder has a side wall and a cylinder aperture extending through the side wall. A wire actuated encoder is mounted on the external surface of the cylinder, which has a wire which extends through the cylinder aperture and is attached to the piston for determining a stroke position of the piston within the cylinder.
Claims8
A hydraulic actuator arrangement comprising:
- a hydraulic actuator comprising a cylinder having a bore in which a piston is slidably mounted for movement along the cylinder to extend and retract the hydraulic actuator, said cylinder comprising a side wall and a cylinder aperture extending through the side wall;
- and
- a wire actuated encoder mounted on an external surface of the cylinder, said wire actuated encoder comprising a wire which extends through the cylinder aperture and is attached to the piston for determining a stroke position of the piston within the cylinder;
- and
- a mounting arrangement comprising, a mounting plate attached to the external surface of the cylinder and the wire actuated encoder attached to the mounting plate, and interlocking members located on the wire actuated encoder and the mounting plate respectively, wherein the mounting arrangement is configured such that, when the wire actuated encoder is externally mounted on the cylinder, the wire is directed into the cylinder.
A hydraulic actuator arrangement comprising:
- a hydraulic actuator comprising a cylinder having a bore in which a piston is slidably mounted for movement along the cylinder to extend and retract the hydraulic actuator, said cylinder comprising a side wall and a cylinder aperture extending through the side wall;
- and
- a wire actuated encoder mounted on an external surface of the cylinder, said wire actuated encoder comprising a wire which extends through the cylinder aperture and is attached to the piston for determining a stroke position of the piston within the cylinder;
- and
- a wire guide configured to guide the wire from the cylinder aperture along the cylinder bore to the piston.
A hydraulic actuator arrangement comprising:
- a hydraulic actuator comprising a cylinder having a bore in which a piston is slidably mounted for movement along the cylinder to extend and retract the hydraulic actuator, said cylinder comprising a side wall and a cylinder aperture extending through the side wall;
- and
- a wire actuated encoder mounted on an external surface of the cylinder, said wire actuated encoder comprising a wire which extends through the cylinder aperture and is attached to the piston for determining a stroke position of the piston within the cylinder;
- and
- a wire guide configured to guide the wire from the wire actuated encoder to the cylinder aperture.
Dependencies are inferred from the claim text.