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CN105074093B 挖掘机的液压混合动力回转驱动系统 有权

挖掘机的液压混合动力回转驱动系统
摘要：
一种液压施工机器的混合动力回转驱动系统(1)包括：可变排量液压回转泵(3)，通过原动机(2)可操作；液压回转马达(16)，用于执行该机器的回转功能；蓄能器(10)；控制器(244)；回转控制阀组件(15)，布置在从回转泵延伸到回转马达的第一液压路径中，该回转控制阀组件具有流体式地将回转泵连接至回转马达的第一侧的第一位置和流体式地将回转泵连接至回转马达的第二侧的第二位置；以及蓄能器控制阀(12)，具有在蓄能器控制阀连接点处流体式地将蓄能器连接至第一液压路径的打开位置和流体式地将蓄能器与第一液压路径隔离的关闭位置。
摘要（英）：

A hybrid swing drive system (1) of a hydraulic construction machine includes a variable displacement hydraulic swing pump (3) operable by a prime mover (2); a hydraulic swing motor (16) for performing a swing function of the machine; an accumulator (10); a controller (244); a swing control valve assembly (15) disposed in a first hydraulic path extending from the swing pump to the swing motor, the swing control valve assembly having a first position fluidly connecting the swing pump to a first side of the swing motor and a second position fluidly connecting the swing pump to a second side of the swing motor; and an accumulator control valve (12) having an open position fluidly connecting the accumulator to the first hydraulic path at an accumulator control valve connection point and a closed position fluidly isolating the accumulator from the first hydraulic path.

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