METHOD FOR DIAGNOSING EXCAVATOR AND APPARATUS THEREOF

摘要

In an embodiment of the present specification, provided is a diagnosis method for malfunction (or failure) of an excavator. The diagnosis method comprises the following steps of measuring the positions of an excavator boom, an excavator arm, and an excavator bucket with one and more sensors; measuring discharge pressure of a main pump operating the boom, the arm, and the bucket with a pressure sensor, while separately operating the boom, the arm, and the bucket; measuring the positions of the boom, the arm, and the bucket with one and more sensors after the operation; comparing the travel distance, which is calculated with the difference of the measured positions, and the travel distance of the boom, the arm, and the bucket, which is theoretically calculated based on the discharge pressure; and determining whether each of the boom, the arm, and the bucket is normal or not based on the comparing result.