一种运输机后货舱门导向装置设计研究

Design of guide mechanism for certain transport aircraft's rear-cargo door

以导向装置传统设计方式为经验设计,容易造成导向轮下落速度不均甚至卡滞等问题,文中以某型运输机后货舱门中舱门导向装置为研究对象,从设计需求出发,综合考虑各类极限工况、结构边界条件、功能需求和工艺限制等影响,以控制滚轮下落速度为目标,推导了超大型定轴转动舱门导向滚轮的导向槽型面曲线方程,并根据曲线方程优化了中舱门导向装置设计,优化后的导向装置已应用于实际工作中,具有较高的参考价值。

The traditional design of guide mechanisms is empirical,as a result,the guide roller often suffers from an uneven falling speed or even stagnation.In this article,with the focus on the guide mechanism for certain transport aircraft's middle-cabin door and rear-cargo door,in order to meet the design requirements,efforts are made to explore various extreme working conditions,structural boundary conditions,functional requirements,processing limitations,and other factors;in order to control the guide roller's falling speed,the curve equation of the guide groove surface is derived,which is used for the ultra-large fixed-axis rotating cabin door's guide roller,and the guide mechanism for the middle-cabin door is designed according to the curve equation.The optimized guide mechanism is applied in the model work,with great reference in engineering.