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发明授权
CN101337650B 全液压电动叉车能量控制阀 有权 转让

全液压电动叉车能量控制阀
摘要：
全液压电动叉车能量控制阀，属于液压控制元件，现有技术存在没有车辆运行的变速功能、安全性能差等缺陷，本发明包括用于接液压泵出油口的主进油口、用于接叉车液压系统的出油口、用于接叉车液压系统行走马达的马达回油口和用于与油箱连接的油箱回油口，其特征是：所述的主进油口与出油口连通，在所述主进油口与出油口之间连接有二级溢流阀，所述二级溢流阀具有一个溢流口和一个液控油口；所述主进油口与出油口之间还连接有能量调节阀，所述的马达回油口与油箱回油口之间连接有受控于所述能量调节阀的能量补偿阀；所述的能量是指系统流量和压力。本发明用二级溢流阀通过液控切换有效的实现了系统两种压力工况，且结构简单、体积小、调节方便。
摘要（英）：

An energy control valve of a full hydraulic pressure electric forklift relates to hydraulic pressure control components, and aims to overcome the shortcomings of the prior art, such as no speed change function of the vehicle and poor safety performance, etc. The energy control valve comprises a main oil inlet, an oil outlet, a motor oil return port and an oil box oil return port. The energy control valve is characterized in that the main oil inlet communicates with the oil outlet; a double stage overflow valve is connected between the main oil inlet and the oil outlet; and the double stage overflow valve is provided with an overflow port and a hydraulic control oil port. The energy control valve of the full hydraulic pressure electric forklift realizes two pressure working conditions by using the double stage overflow valve through hydraulic control switching, and has the advantages of simple structure, small volume and convenient adjustment.

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