Detection method and device for detecting abrasive dust, judgment method and device and engineering machinery

Abstract

The invention relates to the field of engineering machinery and discloses a detection method and device for detecting abrasive dust, a judgment method and device and engineering machine.The detection method comprises steps that real-time current of a monitoring circuit is obtained, the monitoring circuit is connected with an abrasive dust adsorption module, the abrasive dust adsorption module is used for adsorbing abrasive dust existing in oil liquid, whenever the abrasive dust adsorption module adsorbs the abrasive dust, the real-time current changes; whether the real-time current changes or not is judged; and according to the judgment result, whether the abrasive dust exists in the oil liquid or not is judged. The method is advantaged in that the situation that the circuit cannot be connected due to the fact that the abrasive dust size is small or the abrasive dust falling point is not located between the circuit connecting points is avoided, probability of missing detection is reduced, and reliability is improved.

Description

technical field [0001] The invention relates to the field of construction machinery, in particular to a detection method and device for detecting wear debris, a determination method and device, and construction machinery. Background technique [0002] The boom rotation mechanism is a hydraulic direct drive mechanism, which converts the translation of the piston in the mechanism into the axial rotation of the boom through hydraulic drive. Due to the long-term operation of the boom rotation mechanism under complex working conditions such as heavy loads, the continuous meshing between the gears leads to surface wear, especially when the rotation mechanism repeatedly starts and stops, shock vibration occurs, which aggravates the wear between the gears. Long-term wear and tear will make the gear fit gap in the mechanism larger, making it unable to move smoothly, and eventually causing the structure to be scrapped. [0003] How to detect the wear of the gear teeth during the use ...

AI Technical Summary

Problems solved by technology

The detection method of connecting the circuit through the grinding debris will also fail to connect the circuit due to the small size of the grinding debris, or because the iron filings do not fall between the magnetic steel and the metal sheet during the adsorption process, resulting in the circuit being unable to connect, and thus missing detection.

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