Spline diagnostic device, winch and electric vehicle

The invention provides a spline diagnostic device, a winch, and an electric vehicle, which can confirm wear and deterioration states of gears of a spline shaft without detaching the spline shaft from a hub, and do not need to open the vicinity of the spline shaft for maintenance of a sensor itself....

Ausführliche Beschreibung

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Bibliographische Detailangaben
Hauptverfasser:	DEGUCHI KENTA, MOMOSE SHUNYA, OIKAWA YUGO, TAKEWAKI TOMOYA, KANEKO SATORU
Format:	Patent
Sprache:	chi ; eng
Schlagworte:	BLASTING CAPSTANS ENGINEERING ELEMENTS AND UNITS GEARING GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVEFUNCTIONING OF MACHINES OR INSTALLATIONS HAULING HEATING HOISTING HOISTS LIFTING LIGHTING MEASURING MECHANICAL ENGINEERING PERFORMING OPERATIONS PHYSICS TACKLES, e.g. PULLEY BLOCKS TESTING TESTING STATIC OR DYNAMIC BALANCE OF MACHINES ORSTRUCTURES TESTING STRUCTURES OR APPARATUS NOT OTHERWISE PROVIDED FOR THERMAL INSULATION IN GENERAL TRANSPORTING WEAPONS WINCHES
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Beschreibung
Zusammenfassung:	The invention provides a spline diagnostic device, a winch, and an electric vehicle, which can confirm wear and deterioration states of gears of a spline shaft without detaching the spline shaft from a hub, and do not need to open the vicinity of the spline shaft for maintenance of a sensor itself. The present invention is provided with: a current measurement unit that measures the current of a motor that drives a spline shaft; a frequency component calculation unit that calculates a specific frequency component by performing frequency analysis on the current measured by the current measurement unit; and a wear state estimation unit that estimates the wear state of the gear of the spline shaft on the basis of the specific frequency component calculated by the frequency component calculation unit. Since the wear and deterioration state of the gear of the spline shaft can be estimated on the basis of the current of the motor, open inspection of the spline is not required. Since a current sensor is provided in a