Stabilizing of forest work unit
First Claim
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1. A method for stabilizing at least one frame part of a forest work unit having a plurality of frame parts, wherein the method comprises the steps of:
- determining a first component of a moment applied to the at least one frame part of the forest work unit by a payload carried by the at least one frame part to be supported of the forest work unit, the first component acting about a longitudinal rotation axis of the forest work unit;
determining on the basis of at least the first component of the moment applied by the payload to the at least one frame part to be supported a magnitude and direction of at least one support moment required for stabilizing the at least one frame part;
generating and adjusting the required support moment to a magnitude and direction with at least one actuator to stabilize the at least one frame part; and
applying the required support moment to the at least one frame part.
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Abstract
A method for stabilizing at least one frame part of a forest work unit involves determining a moment applied by a payload of the forest work unit to a frame part to be supported and determining a magnitude and direction of at least one support moment needed at least for stabilizing the frame part on the basis of the moment applied by the payload to the frame part to be supported. An arrangement for stabilizing at least one frame part of a forest work unit comprises means for carrying out said determinations.
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Citations
21 Claims
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1. A method for stabilizing at least one frame part of a forest work unit having a plurality of frame parts, wherein the method comprises the steps of:
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determining a first component of a moment applied to the at least one frame part of the forest work unit by a payload carried by the at least one frame part to be supported of the forest work unit, the first component acting about a longitudinal rotation axis of the forest work unit; determining on the basis of at least the first component of the moment applied by the payload to the at least one frame part to be supported a magnitude and direction of at least one support moment required for stabilizing the at least one frame part; generating and adjusting the required support moment to a magnitude and direction with at least one actuator to stabilize the at least one frame part; and applying the required support moment to the at least one frame part. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8)
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9. An arrangement for stabilizing at least one frame part of a forest work unit having a plurality of frame parts, wherein the arrangement comprises:
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a control system, the control system configured to; determine a component of a moment applied to the at least one frame part of the forest work unit by a payload carried by the at least one frame part to be supported of the forest work unit, the component acting about a longitudinal rotation axis of the forest work unit; and determine on the basis of at least the moment applied by the payload to the at least one frame part to be supported a magnitude and direction of at least one support moment required for stabilizing the at least one frame part; and at least one actuator connected to the at least one frame part, the at least one actuator generating the required support moment to a magnitude and direction to stabilize the at least one frame part. - View Dependent Claims (10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20)
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21. An arrangement for stabilizing at least one frame part of a forest work unit having a plurality of frame parts, wherein at least two frame parts are rotatable relative to one another substantially about the longitudinal rotation axis of the forest work unit, the arrangement comprising:
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a control system, the control system configured to; determine a component of a moment applied to the at least one frame part of the forest work unit by a payload carried by the at least one frame part to be supported of the forest work unit, the component acting about an at least substantially longitudinal rotation axis of the forest work unit; and determine on the basis of at least the moment applied by the payload to the at least one frame part to be supported a magnitude and direction of at least one support moment required for stabilizing the at least one frame part; and at least one actuator connected to the at least one frame part, the at least one actuator generating the required support moment to a magnitude and direction to stabilize the at least one frame part, wherein said at least two frame parts comprise a first frame part comprising said frame part to be supported to which the moment caused by the payload is primarily directed, and a second frame part comprising a supporting frame part to which the load of the moment caused by the payload is distributed and/or transferred to by means of stabilization by generating the required support moment by means of the at least one actuator.
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Specification