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未饱和开口状态下改进型双自由度液压缸轴向位移波形研究
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浙江省交通运输厅交通教育科研专项计划项目(2015J04);特种装备制造与先进加工技术教育部浙江省重点实验室开放基金项目(EM2018120103)


Study on Axial Displacement Waveform of an Improved Twodimension Freedom Hydraulic Cylinder with Unsaturated Opening
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    摘要:

    介绍一种改进型双自由度液压缸,活塞上反向均匀设置2组沟槽,缸套上对应设置4组窗口。该液压缸在结构上利用活塞杆的旋转运动,并通过加工于活塞上的压沟槽与加工于缸套上的窗口相配合构成周期性开关的重叠开口,实现液压缸2个敏感腔与油源、油箱周期性沟通,活塞在压力差作用下实现周期性往复运动。由于双自由度液压缸往复运动主要受到缸套窗口轴向开度影响,推导出二者关系的解析式。研究表明:当缸套窗口轴向开度小于某一临界值时,液压缸轴向位移波形失真度就可以有效控制在948%以内。研究结论为推广双自由度液压缸的工程应用提供了参考。

    Abstract:

    An improved twodimension freedom hydraulic cylinder was introduced.Two groups of grooves were reversely arranged evenly in the piston, which were corresponded to the windows in the cylinder sleeve.The periodic overlapping openings were formed between the grooves processed on the piston and the windows processed on the cylinder sleeve when the piston rod rotated.The hydraulic oil in the two chambers of the cylinder communicated with the oil source and the tank periodically.Then the piston driven by the pressure difference achieved a periodic reciprocating axial motion. Because the axial movement of the piston was affected by the axial opening of the cylinder sleeve window, the analytical expression between the two factors above was derived. Research shows that the displacement waveform distortion of the piston rod reciprocating motion is no more than 948% as long as the axial length of the cylinder sleeve windows is below a critical value.This research provides reference for the engineering applications of the twodimension freedom hydraulic cylinder.

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白继平,胡启祥.未饱和开口状态下改进型双自由度液压缸轴向位移波形研究[J].机床与液压,2019,47(22):70-74.
. Study on Axial Displacement Waveform of an Improved Twodimension Freedom Hydraulic Cylinder with Unsaturated Opening[J]. Machine Tool & Hydraulics,2019,47(22):70-74

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  • 在线发布日期: 2020-03-12
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