Electric proportional combination control valve block for PTO wet clutch of tractor

An electric proportional combination control valve block for a PTO wet clutch of a tractor is provided with a valve body, and an oil inlet, an oil outlet and a PTO clutch oil inlet are formed in the valve body. An oil duct, an electromagnetic directional valve, a pilot-operated overflow valve, a one...

Ausführliche Beschreibung

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Bibliographische Detailangaben
Hauptverfasser:	YUAN JING, CAO LIUJIAN, LI WENJUAN, CHEN JINGFANG, YAO XUEXIA, DONG HAO, ZHAO XIN, PEI GAOYUAN, LIU TAO
Format:	Patent
Sprache:	chi ; 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 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:	An electric proportional combination control valve block for a PTO wet clutch of a tractor is provided with a valve body, and an oil inlet, an oil outlet and a PTO clutch oil inlet are formed in the valve body. An oil duct, an electromagnetic directional valve, a pilot-operated overflow valve, a one-way valve and an electric proportional pressure reducing valve are arranged in the valve body; when the electric proportional pressure reducing valve and the electromagnetic reversing valve are disconnected, an oil inlet of the PTO clutch is communicated with a control oil port of the pilot operated overflow valve through the electric proportional pressure reducing valve and the electromagnetic reversing valve, and the oil inlet of the PTO clutch is communicated with an oil outlet through the electric proportional pressure reducing valve. And the oil inlet is communicated with an oil inlet of the PTO clutch through an electric proportional pressure reducing valve. According to the utility model, the control of aut