径向柱塞泵 特征:各柱塞排列在传动轴半径方向,即柱塞中心线垂直于传动轴中心线 1. 径向柱塞泵的工作原理 结构:定子、转子、柱塞、配油轴等 ↓ ↓ 偏心 固定 工作原理:V密形成——同上 上半周,吸油 V密变化——转子顺转< 下半周,压油 排量 V = πd22ez/4 2) 流量 qt = Vn =πd22ezn/4 q = Vnηpv =πd22eznηpv/4 变量原理:径向柱塞泵的排量和流量 改变偏心距的大小和方向, 即可以改变输出油液的大小和方向。 阀配流径向柱塞泵的工作原理 径向柱塞泵的特点: 流量大,压力高,便于作成多排柱塞的形式,工作可靠但径向尺寸大, 自吸能力差, 配流轴径向力不平衡,易磨损,间隙不能补偿, 故限制了转速和压力的提高。
力士乐柱塞泵A4CSG系列特点
◆采用斜盘设计的可变排量轴向柱塞泵,适用于闭路中的液压传动装置。
◆流量与输入速度和排量成比例。通过调整斜盘,可对其进行无极调节。
◆所需辅助泵和所有必要的控制阀均采用集成方式。
◆一个公共辅助泵用于升压和 EP 控制压力
◆紧凑设计(长度极短)
◆合理的功率/重量比
◆低噪音等级
◆长久的使用寿命
◆高效率
◆全新的电动液压控制 EP,具有比例线圈和零排量位置(功率损耗时)
◆多泵组合的通轴传动也可用于集成辅助泵
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