本文選題：液壓泥炮 + 連桿機(jī)構(gòu)　； 參考：《華北理工大學(xué)》2017年碩士論文

【摘要】：泥炮是高爐必備的重要設(shè)備之一,其主要作用是在高爐出鐵結(jié)束后迅速準(zhǔn)確堵塞出鐵口,保證高爐能夠順利進(jìn)入到下一個(gè)冶煉循環(huán)。泥炮一旦出現(xiàn)故障,不能正常堵口,必將導(dǎo)致高爐停產(chǎn),甚至造成重大安全事故。所以泥炮的工作質(zhì)量和使用壽命直接關(guān)系到企業(yè)的安全生產(chǎn)和經(jīng)濟(jì)利益。運(yùn)用機(jī)械原理連桿機(jī)構(gòu)運(yùn)動(dòng)分析的相關(guān)理論,對(duì)液壓泥炮連桿機(jī)構(gòu)進(jìn)行運(yùn)動(dòng)學(xué)分析,獲得液壓泥炮工作過程中關(guān)鍵點(diǎn)的速度曲線及加速度曲線,通過運(yùn)動(dòng)曲線的相關(guān)數(shù)據(jù)分析與使用經(jīng)驗(yàn)選擇0米、0.7米、1.2米三個(gè)位置作為連桿機(jī)構(gòu)有限元分析的參考位置;運(yùn)用Solidworks軟件建立液壓泥炮構(gòu)件模型并完成裝配,將模型導(dǎo)入ANSYS Workbench后進(jìn)行前期的接觸關(guān)系與材質(zhì)設(shè)置;在三個(gè)典型位置分別運(yùn)用軟件的瞬態(tài)結(jié)構(gòu)分析模塊(transient structural)對(duì)液壓泥炮關(guān)鍵部件進(jìn)行運(yùn)動(dòng)仿真,獲得沖擊過程中應(yīng)力分布云圖。結(jié)果顯示在液壓缸桿的沖擊載荷作用下,三連桿在1.2米位置時(shí)的最大應(yīng)力遠(yuǎn)遠(yuǎn)超出材料的屈服強(qiáng)度,存在斷裂危險(xiǎn),二連桿在常規(guī)位置時(shí)最大應(yīng)力接近材料的屈服強(qiáng)度,存在安全隱患。為了提高機(jī)構(gòu)的可靠性,從材料和結(jié)構(gòu)方面對(duì)二連桿和三連桿提出了改進(jìn)建議。對(duì)改進(jìn)后的連桿機(jī)構(gòu)重新建模并使用軟件進(jìn)行驗(yàn)證,改進(jìn)后的連桿機(jī)構(gòu)可以滿足沖擊過程中的強(qiáng)度要求。
[Abstract]:Mud gun is one of the most important equipment in blast furnace. Its main function is to block the iron outlet quickly and accurately after the blast furnace is finished, so as to ensure that the blast furnace can enter the next smelting cycle smoothly.Once the mud gun fails, it will lead to the shutdown of the blast furnace and even the serious safety accident.Therefore, the working quality and service life of clay gun are directly related to the safety of production and economic interests of enterprises.In this paper, the kinematics analysis of the linkage mechanism of hydraulic mud gun is carried out by using the relevant theory of kinematic analysis of the linkage mechanism of the mechanical principle, and the velocity and acceleration curves of the key points in the working process of the hydraulic mud gun are obtained.Through the analysis of the relevant data of the motion curve and the experience in use, three positions of 0 m 0. 7 m and 1. 2 m are selected as the reference position for the finite element analysis of the connecting rod mechanism, and the component model of the hydraulic mud gun is established by using Solidworks software and the assembly is completed.After the model is imported into ANSYS Workbench, the initial contact relation and material setting are carried out, and the transient structural analysis module of the software is used to simulate the motion of the key parts of the hydraulic mud gun in three typical locations, and the stress distribution cloud diagram during the impact process is obtained.The results show that under the impact load of the hydraulic cylinder rod, the maximum stress of the three-bar at the position of 1.2 meters far exceeds the yield strength of the material, and there is a risk of fracture. The maximum stress of the two-bar in the conventional position is close to the yield strength of the material.There are hidden dangers to safety.In order to improve the reliability of the mechanism, suggestions for improving the material and structure of the two and three linkages are put forward.The improved linkage mechanism is remodeled and verified by software. The improved linkage mechanism can meet the strength requirements during the impact process.
【學(xué)位授予單位】：華北理工大學(xué)
【學(xué)位級(jí)別】：碩士
【學(xué)位授予年份】：2017
【分類號(hào)】：TF321;TH112

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