圆环链热浸镀铝试验系统设计与分析

发布时间：2018-04-09 21:47

本文选题：圆环链　切入点：热浸镀铝　出处：《华北理工大学》2017年硕士论文

【摘要】：圆环链作为牵引链广泛应用于刮板输送机、刨煤机、滚筒采煤机等煤矿井下工作机上。由于煤矿井下环境恶劣,圆环链易因磨损和腐蚀而发生断裂现象。所以,圆环链质量好坏直接影响了其工作的安全性和可靠性。圆环链材质为钢,在钢材表面热浸镀铝可改善钢材的耐蚀、耐磨、耐候等性能,但由于链环环环相扣,热镀时连接处易产生漏渡、粘结、缝隙不易获得连续均匀的浸镀层等技术难题在国内一直没有得到解决,所以对其研究有着十分重要的意义。首先,基于钢丝钢带热浸镀铝工艺过程完成了圆环链热浸镀铝工艺路线试验系统设计。针对圆环链镀铝时产生的问题开发研究了振动系统。并对工艺过程中各个装置进行了简单介绍和选择,基于Creo软件建立了生产线的三维几何模型。然后,基于Creo软件对镀铝时振动的链轮和链环进行造型。并运用Adams软件,模拟了在三种不同转速、四种不同振动位移、五种不同链轮中心距下链轮链环的振动情况,得到了浸入铝液的两个链环振动过程中在不同振动参数下连接处的位移变化规律。验证了振动能够使圆环链连接处分离产生缝隙使铝液可以进入从而获得连续均匀的热镀层。并通过对比分析得到了最优的振动参数。最后,根据仿真得到的最优参数对激振器进行选型,完成了振动系统的造型设计。并对振动系统中激振器的底座进行静力分析和模态分析以校核其强度,验证了激振器底座在工作过程中强度足够,且不会和激振器发生共振现象。研究提出了圆环链热浸镀铝工艺过程,设计了振动系统并进行了关键结构件的造型设计与分析。并通过动力学仿真验证了振动过程中浸入铝液中的链环连接处能够实现彻底分离,解决了圆环链热浸镀铝过程中产生的漏渡、粘结等问题,为圆环链热浸镀铝振动系统设计提供依据。
[Abstract]:Circular chain is widely used as traction chain in coal mine underground working machines such as scraper conveyor, coal planner, drum shearer and so on.Because of the poor underground environment, the ring chain is easy to fracture due to wear and corrosion.Therefore, the chain quality directly affects the safety and reliability of its work.The material of circular chain is steel. Hot dip aluminizing on the surface of steel can improve the corrosion resistance, wear resistance and weather resistance of steel.The technical problems such as continuous and uniform dipping coating are not easy to be obtained in China, so it is of great significance to study them.Firstly, based on the hot dip aluminizing process of steel wire and steel strip, the experimental system of circular chain hot dip aluminizing process is designed.The vibration system is developed to solve the problems caused by aluminizing of circular chain.Each device is introduced and selected in the process, and the 3D geometric model of production line is established based on Creo software.Then, based on Creo software, the vibration sprocket and chain ring are modeled.Using Adams software, the vibration of sprocket chain is simulated under three different rotational speeds, four different vibration displacements and five different sprocket center distances.The displacement variation of two chain rings immersed in aluminum liquid under different vibration parameters is obtained.It is proved that the vibration can separate the connection of the circular chain and produce a gap so that the liquid aluminum can enter and obtain a continuous and uniform hot coating.The optimal vibration parameters are obtained by comparative analysis.Finally, the vibration exciter is selected according to the optimal parameters obtained by simulation, and the modeling design of the vibration system is completed.The static analysis and modal analysis of the base of the vibrator in the vibration system are carried out to check its strength. It is proved that the base of the exciter is strong enough in the working process and will not resonate with the exciter.The technological process of hot dip aluminizing of circular chain is studied and the vibration system is designed and the modeling design and analysis of key structural parts are carried out.The dynamic simulation shows that the link joint can be separated completely in the process of vibration, which solves the problems of leakage and bonding in the process of hot dip aluminizing of circular chain.It provides the basis for the design of the vibration system of circular chain hot dip aluminizing.
【学位授予单位】：华北理工大学
【学位级别】：硕士
【学位授予年份】：2017
【分类号】：TD407

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