The invention discloses a power reversing power high-low gear hydraulic system special for a tractor. Comprising an oil suction filter, a constant flow pump, a high-pressure filter, a full-hydraulic steering gear, a steering oil cylinder, a system pressure control valve, a lubricating pressure control valve, an energy accumulator, a first electromagnetic reversing valve, a second electromagnetic reversing valve, an F clutch control valve, an R clutch control valve, a PTO clutch control valve, a lubricating filter control valve, an HI clutch control valve and an LOW clutch control valve. Traditional mechanical reversing is replaced, switching of the valve under different action requirements is stable and reliable, impact is avoided, the action is sensitive, the reaction time is short, and the working requirements under different requirements can be met; the electrification degree is high, the control accuracy of the proportional valve is higher, the gear, the shaft and the like can be lubricated and cooled, and the service life of mechanical parts is protected; and the hydraulic system is high in automation degree, reasonable in overall space arrangement and convenient to maintain and repair.

    本发明公开了一种专门用于拖拉机的动力换向动力高低档液压系统,包括吸油过滤器、恒流泵、高压过滤器、全液压转向器、转向油缸、系统压力控制阀、润滑压力控制阀、蓄能器、第一电磁换向阀、第二电磁换向阀、F离合器控制阀、R离合器控制阀、PTO离合器控制阀、润滑过滤器控制阀、HI离合器控制阀和LOW离合器控制阀,本发明取代传统的机械式换向,不同动作要求下阀的切换稳定可靠,无冲击,动作灵敏,反应时间段,能够实现不同要求下的工作需求;电气化程度高、比例阀控制精准度更高,还可以对齿轮和轴等进行润滑和冷却,保护机械零件的使用寿命;且自动化程度高,液压系统总体空间布置合理,便于维护和保养。


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    Title :

    Power reversing power high-low gear hydraulic system special for tractor


    Additional title:

    一种专门用于拖拉机的动力换向动力高低档液压系统


    Contributors:
    ZHANG JUN (author) / CHANG FEILONG (author) / LU FENGXIANG (author) / GU SHICHEN (author) / YUE ZHIWEI (author)

    Publication date :

    2022-04-05


    Type of media :

    Patent


    Type of material :

    Electronic Resource


    Language :

    Chinese


    Classification :

    IPC:    F15B SYSTEMS ACTING BY MEANS OF FLUIDS IN GENERAL , Druckmittelbetriebene Systeme allgemein / B60K Anordnung oder Einbau von Antriebseinheiten oder von Kraft- bzw. Drehmomentübertragungen in Fahrzeugen , ARRANGEMENT OR MOUNTING OF PROPULSION UNITS OR OF TRANSMISSIONS IN VEHICLES / F16H Getriebe , GEARING



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