本文選題：液壓掘巖機 + 有限元分析��； 參考：《合肥工業(yè)大學》2015年碩士論文

【摘要】：液壓掘巖機是一種用于對巖石、混凝土等較硬材質(zhì)進行扒掘、剝離、破碎的工程設備,它不僅可以進行扒掘、剝離,而且可以扒掘、剝離和破碎同時進行。目前該產(chǎn)品未在市場上推廣,對其的研究還處于初期階段,因此對液壓掘巖機的設計研究是目前最需要的。從結構上講,液壓掘巖機主要由沖擊器殼體、沖擊器、掘巖鉤組成,但液壓沖擊器的設計研究較為成熟,且掘巖鉤是液壓掘巖機的工作部件,所以對掘巖鉤的研究是重點。由于液壓掘巖機的工作過程與沖擊擺、打樁機和液壓破碎錘類似,所以本文主要參考它們的分析理論對掘巖機進行了分析。本文首先對液壓沖擊器的基本原理及其關鍵部件的研究狀況做了概述,并根據(jù)企業(yè)提供的設計要求進行液壓沖擊器的設計計算,再根據(jù)其計算結果,對液壓掘巖機的關鍵零部件進行建模,然后對已經(jīng)設計的液壓掘巖機進行有限元分析,提出了掘巖機的優(yōu)化意見。其次,利用沖擊擺的理論分析出了掘巖鉤與轉(zhuǎn)軸安裝的最佳位置,提出了掘巖鉤的另一種結構模型：利用楔形樁的分析方法對掘巖鉤的承載能力進行了分析,推算出了掘巖鉤頂端的極限承載力的估算公式和掘巖鉤側面的承載力估算公式,證明了承載力與掘巖鉤的結構尺寸和介質(zhì)的性能參數(shù)有關,然后用沖擊機械碰撞研究常用的應力波分析方法分析掘巖鉤中應力波的傳播特性,得出了應力波的傳播與掘巖鉤的結構參數(shù)有關。最后通過ANSYS/LS-DYNA軟件仿真模擬了短釬桿沖擊掘巖鉤的過程,并根據(jù)其后處理結果說明了掘巖鉤參數(shù)對沖擊力和應力波傳播的影響情況。
[Abstract]:Hydraulic rock excavator is a kind of engineering equipment used to dig, peel and break hard materials such as rock and concrete. It not only can be excavated and stripped, but also can be excavated, stripped and broken at the same time. At present, the product has not been popularized in the market, and the research on it is still in the initial stage, so the design and research of hydraulic rock excavator is the most needed at present. From the structure point of view, hydraulic rock excavator is mainly composed of impactor shell, impactor and rock excavator hook, but the design and research of hydraulic impactor is more mature, and rock excavating hook is the working part of hydraulic rock excavator, so the research of rock excavating hook is the key point. Because the working process of hydraulic rock excavator is similar to that of impact pendulum, pile driver and hydraulic crushing hammer, this paper mainly refers to their analysis theory to analyze the rock excavator. In this paper, the basic principle of the hydraulic impactor and the research status of the key components are summarized, and the design calculation of the hydraulic impactor is carried out according to the design requirements provided by the enterprise, and then according to the calculation results, The key parts of hydraulic rock excavator are modeled, then the finite element analysis of the hydraulic rock excavator has been carried out, and the optimization advice of the excavator is put forward. Secondly, by using the theory of impact pendulum, the optimum position of rock hooks and shaft installation is analyzed, and another structural model of rock excavating hook is put forward: the bearing capacity of rock excavating hook is analyzed by using the analysis method of wedge-shaped pile. The formulas for estimating the ultimate bearing capacity of the top of the excavating hook and the bearing capacity of the side of the excavating hook are derived. It is proved that the bearing capacity is related to the structural size of the excavating hook and the performance parameters of the medium. Then the propagation characteristics of stress wave in rock excavating hook are analyzed by using the stress wave analysis method which is commonly used in the research of impact mechanical collision. It is concluded that the propagation of stress wave is related to the structural parameters of rock excavating hook. Finally, the process of rock hooks with short drill rod impact is simulated by ANSYS- LS-DYNA software, and the influence of rock hook parameters on the propagation of impact force and stress wave is explained according to the post-processing results.
【學位授予單位】：合肥工業(yè)大學
【學位級別】：碩士
【學位授予年份】：2015
【分類號】：TU63

【參考文獻】

相關期刊論文 前7條

1 楊博瀚;井晶;申海峰;宗冬冬;;動能彈對金屬靶板侵徹的數(shù)值模擬分析[J];群文天地;2011年24期

2 蔡燕燕;俞縉;鄭春婷;戚志博;宋博學;;楔形樁樁頂縱向振動阻抗的解析解[J];巖土工程學報;2011年S2期

3 許同樂;;液壓破碎錘技術應用問題的研究[J];煤礦機械;2008年12期

4 湯建剛;;分裂機液壓錘在聯(lián)合采礦掘進中的應用[J];建筑機械;2007年15期

5 王進;馬軍星;;液壓式混凝土和巖石分裂機及其應用[J];建筑機械;2005年12期

6 曾月進,邵力群,馮禮恭,馬國祥,王道明,嚴朝華;楔形樁的承載力[J];西部探礦工程;2004年11期

7 劉杰,王忠海;楔形樁承載力試驗研究[J];天津大學學報;2002年02期

，

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