Patent ID: 11881061
Assignee: KOMATSU LTD.
Field: Civil engineering (Other fields)
Classification: CPC E  G | IPC E  G

Claim 7:
8. A system including a work machine comprising:
a vehicular body;
a running wheel rotatably attached to the vehicular body;
a work implement operable with respect to the vehicular body;
an operation apparatus for operating the running wheel and the work implement; and
a controller that controls an operation by the work machine, wherein the controller determines that an ineffective operation, in which the work implement does not work in spite of an operation of the operation apparatus, is being performed during an excavation work based on an operation command value output from the operation apparatus, and outputs a time period for which the ineffective operation is being performed,
the work implement includes a bucket,
when the controller determines that work implement stall in which the work implement is unable to work is occurring during the excavation work, the controller outputs a time period for which the work implement stall is occurring,
the work implement includes a boom,
the operation apparatus includes a boom operation apparatus for operating the boom, and
the controller calculates a speed of raise of the boom based on a signal from a sensor, and when the operation command value output from the boom operation apparatus is larger than a second threshold value and the speed of raise is smaller than a third threshold value, the controller determines that the work implement stall is occurring.