弋力EALY高压变量泵VDC-1A-F40C-20
区别编辑
1.在变量叶片泵中,当叶片处于压油区时,叶片底部通压力油,当叶片处于吸油区时,叶片底部通吸油腔,这样,叶片的顶部和底部的液压力基本平衡,这就避免了定量叶片泵在吸油区定子内表面严重磨损的问题.如果在吸油腔叶片底部仍通压力油,叶片顶部就会给定子内表面以较大的摩擦力,以致减弱了压力反馈的作用。
2.叶片也有倾角,但倾斜方向正好与定量叶片泵相反,这是因为变量叶片泵的叶片上下压力是平衡的,叶片在吸油区向外运动主要依靠其旋转时的离心惯性作用.根据力学分析,这样的倾斜方向更有利于叶片在离心惯性作用下向外伸出。
3.变量叶片泵结构复杂,轮廓尺寸大,相对运动的机件多,泄漏较大,轴上承受不平衡的径向液压力,噪声较大,容积效率和机械效率都没有定量叶片泵高;但是,它能按负载压力自动调节流量,在功率使用上较为合理,可减少油液发热。
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弋力EALY高压变量泵VDC-1A-F40C-20
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弋力EALY高压变量泵VDC-1A-F40C-20
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弋力EALY高压变量泵VDC-1A-F40C-20
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