本文選題：舉升機(jī)構(gòu) + 仿真分析�。� 參考：《河北工程大學(xué)》2016年碩士論文

【摘要】：自卸車作為一種運(yùn)輸松散貨物的機(jī)械,具有卸載效率高,勞動(dòng)強(qiáng)度低等特點(diǎn),幾十年來在國(guó)內(nèi)外獲得迅速發(fā)展與普及。自卸車的舉升機(jī)構(gòu)是卸載過程中承受主要載荷的關(guān)鍵部件,對(duì)于設(shè)備的安全性和可靠性有著重要作用,直接影響著自卸車整車壽命,提高自卸車舉升機(jī)構(gòu)的性能和穩(wěn)定性是一個(gè)亟待解決的問題。研究表明,自卸車舉升機(jī)構(gòu)的裝卸載性能與穩(wěn)定性受其鉸接點(diǎn)的空間位置、材料,零部件質(zhì)量等因素的影響。因此,研究自卸車舉升機(jī)構(gòu),對(duì)提高裝卸載性能與穩(wěn)定性有著十分重要的意義。本文以EQ3093型號(hào)自卸車舉升機(jī)構(gòu)為研究對(duì)象,進(jìn)行相關(guān)研究,研究的主要內(nèi)容包括:1、針對(duì)EQ3093型自卸車前推式舉升機(jī)構(gòu)的結(jié)構(gòu)特點(diǎn)和工作原理進(jìn)行數(shù)學(xué)模型建立;2、根據(jù)自卸車舉升機(jī)構(gòu)的結(jié)構(gòu)與位置參數(shù),在Solidworks軟件中建立舉升機(jī)構(gòu)三維模型,并對(duì)其進(jìn)行虛擬裝配和干涉檢查;3、把無干涉要求的裝配體模型以.X_T格式導(dǎo)入到RecurDyn軟件中,對(duì)其進(jìn)行運(yùn)動(dòng)學(xué)與動(dòng)力學(xué)仿真分析,通過仿真分析,判斷設(shè)計(jì)結(jié)果是否合理;4、運(yùn)用ANSYS Workbench對(duì)舉升機(jī)構(gòu)三角臂進(jìn)行有限元分析,得出四種不同工況下的應(yīng)力應(yīng)變分布圖;根據(jù)分析結(jié)果完成對(duì)三角臂的拓?fù)鋬?yōu)化,使之在滿足剛度和強(qiáng)度的條件下,實(shí)現(xiàn)三角臂輕量化設(shè)計(jì)的目的;5、在對(duì)舉升機(jī)構(gòu)優(yōu)化的基礎(chǔ)上,考慮制造精度和安裝誤差等隨機(jī)性誤差對(duì)舉升機(jī)構(gòu)的影響,對(duì)其穩(wěn)健性優(yōu)化設(shè)計(jì),得出符合實(shí)際情況的優(yōu)化結(jié)果,滿足舉升機(jī)構(gòu)的可靠性要求。本文通過多種軟件完成對(duì)自卸車舉升機(jī)構(gòu)的仿真分析和三角臂拓?fù)鋬?yōu)化設(shè)計(jì),在滿足強(qiáng)度和剛度的前提下,三角臂的質(zhì)量由優(yōu)化前的27.182kg縮減到17.78kg,質(zhì)量減少到初始模型的65.411%,實(shí)現(xiàn)了輕量化設(shè)計(jì)的要求。最后加入制造精度和安裝誤差等隨機(jī)性誤差,完成自卸車舉升機(jī)構(gòu)的穩(wěn)健性優(yōu)化設(shè)計(jì),使優(yōu)化結(jié)果更趨合理可靠。
[Abstract]:As a kind of machinery for transporting loose goods, dump truck has the characteristics of high unloading efficiency and low labor intensity. It has been developed rapidly and popularized at home and abroad in recent decades. The lifting mechanism of the dump truck is the key component to bear the main load in the unloading process, which plays an important role in the safety and reliability of the equipment, and directly affects the life of the dump truck as a whole. It is an urgent problem to improve the performance and stability of the lifting mechanism of dump truck. The results show that the loading and unloading performance and stability of the lifting mechanism of the dump truck are affected by the space position of the hinge point, the material, the quality of the parts and so on. Therefore, it is very important to study the lifting mechanism of dump truck to improve the loading and unloading performance and stability. This paper takes the lifting mechanism of EQ3093 type dump truck as the research object, carries on the correlation research, The main contents of the study include: 1. According to the structural characteristics and working principle of the forward lifting mechanism of the EQ3093 type dump truck, the mathematical model is established. According to the structure and position parameters of the lifting mechanism of the dump truck, the three-dimensional model of the lifting mechanism is established in Solidworks software. Then virtual assembly and interference inspection are carried out, and the non-interference requirement assembly model is imported into RecurDyn software in the format of .XStat, and the kinematics and dynamics simulation analysis is carried out, and the simulation analysis is carried out. To judge whether the design result is reasonable or not, the finite element analysis of the triangular arm of the lifting mechanism is carried out by using ANSYS Workbench, and the stress-strain distribution diagram under four different working conditions is obtained, and the topology of the triangular arm is optimized according to the analysis results. Under the condition of satisfying the stiffness and strength, the aim of realizing the lightweight design of the triangular arm is 5. On the basis of the optimization of the lifting mechanism, the influence of the random errors such as manufacturing precision and installation error on the lifting mechanism is considered. For the robust optimization design, the optimization results are obtained, which meet the reliability requirements of the lifting mechanism. In this paper, the simulation analysis of the lifting mechanism of the dump truck and the topology optimization design of the triangular arm are completed by a variety of software. Under the premise of satisfying the strength and rigidity, The weight of the triangular arm is reduced from 27.182kg to 17.78 kg, and the mass is reduced to 65.411 of the initial model, which realizes the requirement of lightweight design. Finally, random errors such as manufacturing precision and installation error are added to complete the robust optimization design of the lifting mechanism of the dump truck, which makes the optimization result more reasonable and reliable.
【學(xué)位授予單位】：河北工程大學(xué)
【學(xué)位級(jí)別】：碩士
【學(xué)位授予年份】：2016
【分類號(hào)】：U469.4

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本文編號(hào)：1985416