STRUCTURE FOR MANAGING DEGREE OF OIL CONTAMINATION OF WORKING MACHINE

PROBLEM TO BE SOLVED: To decide a maintenance period of an oil filter and the like appropriately by providing a dust sensor whose output value varies according to a deposit amount of wear metal powder on an oil filter part in a machine utilizing lubricant oil of a gear-driven speed-change gear as wo...

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Bibliographische Detailangaben
1. Verfasser:	MIZOTA HIDEAKI
Format:	Patent
Sprache:	eng
Schlagworte:	AGRICULTURE ANIMAL HUSBANDRY BLASTING CRANKCASE VENTILATING ENGINE PLANTS IN GENERAL FERTILISING FISHING FORESTRY HEATING HUMAN NECESSITIES HUNTING LIGHTING LUBRICATING INTERNAL COMBUSTION ENGINES LUBRICATING OF MACHINES OR ENGINES IN GENERAL MACHINES OR ENGINES IN GENERAL MECHANICAL ENGINEERING PERFORMING OPERATIONS PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL PLANTING SEPARATION SOWING STEAM ENGINES TRANSPORTING TRAPPING WEAPONS
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Beschreibung
Zusammenfassung:	PROBLEM TO BE SOLVED: To decide a maintenance period of an oil filter and the like appropriately by providing a dust sensor whose output value varies according to a deposit amount of wear metal powder on an oil filter part in a machine utilizing lubricant oil of a gear-driven speed-change gear as working oil of its hydraulic actuator. SOLUTION: A riding rice-transplanter equipped with a seedling-planting apparatus capable of up-and-down stroking on the back of a running body utilizes lubricant oil of a gear-driven speed-change gear 40 as working oil for a lifting cylinder 3. Wherein the lubricant oil of the gear-driven speed-change gear 40 is absorbed as the working oil of the lifting cylinder 3 and force-fed to solenoid valve 28 by a hydraulic pump 41 whose suction side is provided with oil filters 42A, 42B. The oil filter 42B is provided with a dust sensor S4 comprising a magnetic resistance element and the like so that an output value varies according to a deposit amount of wear metal powder depositing on the oil filter 42B. When the output value from the dust sensor S4 by a controlling device 21 surpasses a specified threshold value, an alarm device 38C is operated.