Damping or prevention of vibrations in industrial trucks
AssigneeTechnische Universität München
InventorsMichael Kleeberger, Michael Buhl, Michael Schipplick, Willibald Günthner, Boris Lohmann, Rudy Eid
Life of this patent
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Abstract
An industrial truck is shown with a lifting frame, on which a load-receiving section is arranged so as to be movable vertically. The load-receiving section has at least one degree of movement freedom with respect to the lifting frame, which lies in a plane perpendicular to the main direction of travel of the industrial truck and has at least one horizontal component. In addition, a vibration control system is provided for damping or preventing vibrations in the relative position of load-receiving section and lifting frame.
Claims19
Industrial truck having one or more intended operations for moving an object along one or more intended degrees of freedom, the industrial truck comprising:
- a lifting frame, on which a load-receiving section is arranged so as to be movable vertically during one of the intended operations, wherein the load-receiving section has at least one unintended motion degree of freedom in relation to the lifting frame for damping or preventing vibrations in the lifting frame in a direction transversely to a main direction of travel of said industrial truck, said unintended motion degree of freedom lying in a plane perpendicular to the main direction of travel of said industrial truck and having at least one horizontal component, and means for either damping or preventing vibrations in a relative position between the load-receiving section and the lifting frame along said at least one unintended motion degree of freedom, wherein said industrial truck is not configured to move said load-receiving section along said at least one unintended motion degree of freedom during any of the intended operations for moving an object along the one or more intended degrees of freedom.
A method for damping or preventing vibrations in an industrial truck having one or more intended operations for moving an object along one or more intended degrees of freedom, the industrial truck having a lifting frame, on which a load-receiving section is arranged so as to be vertically displaceable during one of the intended operations, the method comprising:
- actively or semi-actively producing a force or a movement between the lifting frame and the load-receiving section;
- and controlling or regulating the force or movement so that vibrations are either damped or prevented in the relative position of the load-receiving section with respect to the lifting frame along an unintended motion degree of freedom of the load-receiving section in relation to the lifting frame for damping or preventing vibrations in the lifting frame in a direction transversely to a main direction of travel of said industrial truck, wherein the unintended motion degree of freedom lies in a plane perpendicular to the main direction of travel of the industrial truck and having at least one horizontal component, wherein said industrial truck is not configured to move said load-receiving section along said at least one unintended motion degree of freedom during any of the intended operations for moving an object along the one or more intended degrees of freedom.
Dependencies are inferred from the claim text.