Invention Grant
- Patent Title: Apparatus and method for cylinder changeover with a mechanically lockable force-building cylinder
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Application No.: US16768661Application Date: 2018-12-03
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Publication No.: US11577481B2Publication Date: 2023-02-14
- Inventor: Werner Haendle , Achim Helbig , Christoph Boes , Michael Sieber
- Applicant: MOOG GmbH
- Applicant Address: DE Boeblingen
- Assignee: MOOG GmbH
- Current Assignee: MOOG GmbH
- Current Assignee Address: DE Boeblingen
- Agency: Harter Secrest & Emery LLP
- Priority: DE102017129117.2 20171207
- International Application: PCT/EP2018/083384 WO 20181203
- International Announcement: WO2019/110530 WO 20190613
- Main IPC: B30B15/16
- IPC: B30B15/16 ; B29C45/67 ; B30B1/32 ; F15B21/14

Abstract:
An electro-hydrostatic drive for realizing a rapid movement and a force-building movement, comprising a hydro-machine with variable volume and/or rotational speed, driven by an electric motor, for providing a volume-flow of a hydraulic fluid, a first cylinder with a housing, a piston, a cylinder rod, and a first and a second cylinder chamber, a second cylinder with a piston, a cylinder rod, and a first and a second cylinder chamber, a moveable carrier plate, a pillar, and a clamping apparatus to clamp and/or unclamp the first cylinder to the pillar, where the hydraulic drive has a closed hydraulic circuit, which has, when run, a positive pressure above atmospheric pressure and which, by utilizing the hydro-machine, can pressurize either the first or the second cylinder chamber of the first cylinder and/or the first or the second cylinder chamber of the second cylinder. The moveable carrier plate is connected both to the first cylinder and to the second cylinder. For the force-building movement, the first cylinder is clamped, by the clamping apparatus, to the pillar and one cylinder chamber of the first cylinder is pressurized with the hydraulic fluid, and for the rapid movement, the first cylinder is unclamped, by the clamping apparatus, from the pillar and one cylinder chamber of the second cylinder is pressurized with the hydraulic fluid.
Public/Granted literature
- US20210170709A1 Apparatus and Method for Cylinder Changeover with a Mechanically Lockable Force-Building Cylinder Public/Granted day:2021-06-10
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