HST cooling circuit

There are provided: an HST hydraulic circuit that is formed through a closed circuit connection of a variable displacement hydraulic pump 2 and first and second variable displacement hydraulic motors 3 and 4; a charge pump 6 that replenishes the HST hydraulic circuit with hydraulic oil; a cooling ci...

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Bibliographische Detailangaben
Hauptverfasser:	TAKEYAMA TSUYOSHI, HYODO KOJI, ISHIDA KAZUO, AOKI TADAYOSHI, KATSURAGI TAKEHIKO, KAWAHARA SHOROKU
Format:	Patent
Sprache:	eng
Schlagworte:	BLASTING BRAKES CLUTCHES COUPLINGS FOR TRANSMITTING ROTATION DETAILS OF FLUID-PRESSURE SYSTEMS, NOT OTHERWISE PROVIDED FOR ENGINEERING ELEMENTS AND UNITS FLUID-PRESSURE ACTUATORS FLUID-PRESSURE ACTUATORS, e.g. SERVO-MOTORS GEARING GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVEFUNCTIONING OF MACHINES OR INSTALLATIONS HEATING HYDRAULICS OR PNEUMATICS IN GENERAL LIGHTING MECHANICAL ENGINEERING SYSTEMS ACTING BY MEANS OF FLUIDS IN GENERAL THERMAL INSULATION IN GENERAL WEAPONS
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Beschreibung
Zusammenfassung:	There are provided: an HST hydraulic circuit that is formed through a closed circuit connection of a variable displacement hydraulic pump 2 and first and second variable displacement hydraulic motors 3 and 4; a charge pump 6 that replenishes the HST hydraulic circuit with hydraulic oil; a cooling circuit through which an excess of the hydraulic oil that has been replenished from the charge pump 6 to the HST hydraulic circuit is returned to a reservoir through the hydraulic pump 2, the first hydraulic motor 3, and the second hydraulic motor 4; a hydraulic source 7 that supplies hydraulic oil to an hydraulic device other than the first and second hydraulic motors; and a merge circuit through which a portion of hydraulic oil from the hydraulic source 7 is merged into an intermediate oil line 22 that lies downstream of the first hydraulic motor 3 and upstream of the second hydraulic motor 4 in the cooling circuit.