Wear prognosis method and maintenance method
AssigneeWirtgen GmbH
InventorsSven Paulsen, Stefan Wagner, Cyrus Barimani
Life of this patent
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Abstract
A wear prognosis method and a maintenance method for an earth working machine are disclosed, along with an apparatus for performing the method. Provision is made that the current wear state of one or more earth working tools is sensed. The residual wear capacity until the wear limit is reached is then ascertained from the current wear state.
Claims18
A method of determining wear for an earth working machine having at least one earth working tool with a first wear state, the method comprising during an earth working operation of the earth working machine:
- continuously determining, via a controller, an actual work output of the earth working machine from one or more machine parameters;
- determining, via the controller, a second wear state of the at least one earth working tool, based on a calculated change in wear from the first wear state corresponding to the continuously determined actual work output and a material property of a corresponding substrate worked since beginning the earth working operation;
- predicting, via the controller, a remaining work output until a third wear state of the at least one earth working tool, based on an expected change in wear from the second wear state corresponding to a material property of a substrate yet to be worked during the earth working operation;
- and
- selectively storing in a memory unit and subsequently employing the determined second wear state as the first wear state.
A system for determining wear for an earth working machine having at least one earth working tool with a first wear state, the system comprising:
- a controller configured to continuously ascertain one or more machine parameters of the earth working machine during an earth working operation;
- and
- wherein the controller is configured during the earth working operation of the earth working machine to
- determine an actual work output of the earth working machine from the one or more machine parameters;
- determine a second wear state of the at least one earth working tool, based on a calculated change in wear from the first wear state corresponding to the continuously determined actual work output and a material property of a corresponding substrate worked since beginning the earth working operation;
- predict a remaining work output until a third wear state of the at least one earth working tool, based on an expected change in wear from the second wear state corresponding to a material property of a substrate yet to be worked during the earth working operation;
- and
- selectively store in a memory and subsequently employ the determined second wear state as the first wear state.
Dependencies are inferred from the claim text.