OIL PRESSURE CIRCUIT FOR VEHICLE TRAVELING

PURPOSE:To positively prevent overheating, by making it impossible to drive a hydraulic motor when the oil temperature in an oil pressure circuit rises higher than a preset level. CONSTITUTION:When the oil temperature in a circuit rises up to an abnormal high temperature, 100 deg.C or higher for ins...

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Bibliographische Detailangaben
1. Verfasser:	YAMAZAKI SENJU
Format:	Patent
Sprache:	eng
Schlagworte:	ARRANGEMENT OF BRAKING ELEMENTS ON VEHICLES IN GENERAL ARRANGEMENT OR MOUNTING OF PLURAL DIVERSE PRIME-MOVERS INVEHICLES ARRANGEMENT OR MOUNTING OF PROPULSION UNITS OR OFTRANSMISSIONS IN VEHICLES ARRANGEMENTS IN CONNECTION WITH COOLING, AIR INTAKE, GASEXHAUST OR FUEL SUPPLY OF PROPULSION UNITS, IN VEHICLES AUXILIARY DRIVES FOR VEHICLES BRAKE CONTROL SYSTEMS OR PARTS THEREOF, IN GENERAL DREDGING FIXED CONSTRUCTIONS FOUNDATIONS HYDRAULIC ENGINEERING INSTRUMENTATION OR DASHBOARDS FOR VEHICLES PERFORMING OPERATIONS PORTABLE DEVICES FOR PREVENTING UNWANTED MOVEMENT OFVEHICLES SOIL SHIFTING TRANSPORTING VEHICLE BRAKE CONTROL SYSTEMS OR PARTS THEREOF VEHICLE MODIFICATIONS TO FACILITATE COOLING OF BRAKES VEHICLES IN GENERAL
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Beschreibung
Zusammenfassung:	PURPOSE:To positively prevent overheating, by making it impossible to drive a hydraulic motor when the oil temperature in an oil pressure circuit rises higher than a preset level. CONSTITUTION:When the oil temperature in a circuit rises up to an abnormal high temperature, 100 deg.C or higher for instance, on traveling of a vehicle, an oil temperature switch 13 is switched to a high temperature contact side and electric current is conducted in the solenoid 12a of an electromagnetic switching valve 12. As a result, the electromagnetic switching valve 12 is changed over to the open side and a bypass line 11 is placed in connection. And hence, a closed circuit 5 is brought to a short-circuit. Accordingly, the pressurized oil delivered from a hydraulic pump 3 is returned to the suction side through the bypass line 11 and hence, the supply of pressurized oil is disconnected against the hydraulic motor 4 and the drive thereof is made impossible. In this way, when the oil temperature in an oil pressure circuit is overheated, the drive of hydraulic motor 4 is made impossible regardless of the operator's will and the oil pressure circuit is prevented from overheating. And it is effectively cooled by the cooling fan of an engine.