Analysis of Kinetic Accuracy and Reliability of Space Four-links Mechanism
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摘要: 提出了一种任意空间四连杆机构运动输出的求解方法,并从可靠性角度出发,考虑杆长尺寸偏差、铰链间隙和磨损等因素,建立可靠性简化模型,分析了任意空间四连杆机构输出运动精度的可靠性。再以某型飞机舱门锁机构为算例,计算其锁定精度可靠性。最后建立对比模型,分析磨损量变化对该类机构可靠性的影响,为机构可靠性计算提供参考,具有重要的工程应用价值。Abstract: In this paper,a new method for solving output angles of arbitrarily space four-links mechanism is developed.The simplified model is established considering dimension errors of link length,including angles of links,initial clearances of hinges and different wear loss from reliability standpoint.Then reliability of kinetic accuracy of arbitrarily space four-links mechanism is analyzed.Futhermore,an example of lock mechanism on door system of a certain airplane is given,of which the reliability of kinetic precision is calculated by such method.Finally,a contrast model is built in order to provide reference for analyzing the effects imposed on reliability by different wear loss in engineering calculation.
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Key words:
- space four-links /
- wear /
- clearance /
- kinetic accuracy /
- reliability
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