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发明公开
CN104271962A 控制阀组件 有权

控制阀组件
摘要：
本发明公开了一种动力机(100)和动力机的动力转换系统(106)。在示例实施例中，动力转换系统包括：泵(206)，配置为提供加压液压流体的源；以及控制阀组件(204，300)，接收液压流体。控制阀组件包括：第一阀元件(308)，配置为当第一阀元件在第一和第二致动位置(342，346)时将液压流体引导至致动器(314)。控制阀组件还包括第一阀元件下游的第二阀元件(310)。第一阀元件在非致动位置(344)与第一和第二致动位置之间可移动，并且配置为将从致动器接收到的液压流体通过第二致动位置引导至第二阀元件，并且通过第一致动位置引导从致动器接收到的液压流体以旁路掉第二阀元件。
摘要（英）：

A power machine (100) and a power conversion system (106) for a power machine are disclosed. In an exemplary embodiment, the power conversion system includes a pump (206) configured to provide a source of pressurized hydraulic fluid and a control valve assembly (204, 300) to receive the hydraulic fluid. The control valve assembly includes a first valve element (308) configured to direct hydraulic fluid to an actuator (314) when the first valve element is in first and second actuated positions (342, 346). The control valve assembly also includes a second valve element (310) downstream of the first valve element. The first valve element is moveable between an unactuated position (344) and the first and second actuated positions and is configured to direct hydraulic fluid received from the actuator through the second actuated position to the second valve element and to direct hydraulic fluid received from the actuator through the first actuated position to bypass the second valve element.

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