低位放頂煤液壓支架的設(shè)計(jì)
低位放頂煤液壓支架的設(shè)計(jì),低位,放頂煤,液壓,支架,設(shè)計(jì)
xx大學(xué)
畢業(yè)設(shè)計(jì)
姓 名： 學(xué) 號(hào)：
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論文題目： 低位放頂煤液壓支架的設(shè)計(jì)
指導(dǎo)教師： 職 稱：
20 年 月
畢業(yè)設(shè)計(jì)任務(wù)書
學(xué) 院 機(jī)械與動(dòng)力工程學(xué)院
專業(yè)年級(jí)
學(xué)生姓名
任務(wù)下達(dá)日期： 20 年 月 日
設(shè)計(jì)日期： 20 年 月 日至 20 年 月 日
設(shè)計(jì)題目：低位放頂煤液壓支架設(shè)計(jì)
設(shè)計(jì)專題題目：低位放頂煤液壓支架頂梁及立柱
設(shè)計(jì)主要內(nèi)容和要求：
1. 設(shè)計(jì)要求：
完成液壓支架總體方案確定及設(shè)計(jì)
主要零部件設(shè)計(jì)
完成設(shè)計(jì)圖紙（折合0＃）3張
2. 主要工作參數(shù)：
頂板條件：老頂 Ⅲ級(jí)
直接頂 2類
底板比壓: 1.5MPa
工作阻力： 4000kN
推溜力： 150KN
拉架力： 300KN
泵站壓力：32MPa
適應(yīng)煤層傾角：<150
院長(zhǎng)簽字： 指導(dǎo)教師簽字：
大學(xué)畢業(yè)設(shè)計(jì)指導(dǎo)教師評(píng)閱書
指導(dǎo)教師評(píng)語（①基礎(chǔ)理論及基本技能的掌握；②獨(dú)立解決實(shí)際問題的能力；③研究?jī)?nèi)容的理論依據(jù)和技術(shù)方法；④取得的主要成果及創(chuàng)新點(diǎn)；⑤工作態(tài)度及工作量；⑥總體評(píng)價(jià)及建議成績(jī)；⑦存在問題；⑧是否同意答辯等）：
成績(jī)： 指導(dǎo)教師簽字：
年 月 日
畢業(yè)設(shè)計(jì)評(píng)閱教師評(píng)閱書
評(píng)閱教師評(píng)語（①選題的意義；②基礎(chǔ)理論及基本技能的掌握；③綜合運(yùn)用所學(xué)知識(shí)解決實(shí)際問題的能力；③工作量的大??；④取得的主要成果及創(chuàng)新點(diǎn)；⑤寫作的規(guī)范程度；⑥總體評(píng)價(jià)及建議成績(jī)；⑦存在問題；⑧是否同意答辯等）：
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畢業(yè)設(shè)計(jì)答辯及綜合成績(jī)
答 辯 情 況
提 出 問 題
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正確
基本正確
有一般性錯(cuò)誤
有原則性錯(cuò)誤
沒有
回答
答辯委員會(huì)評(píng)語及建議成績(jī)
答辯委員會(huì)主任簽字：
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學(xué)院領(lǐng)導(dǎo)小組綜合評(píng)定成績(jī)
學(xué)院領(lǐng)導(dǎo)小組負(fù)責(zé)人：
年 月 日
畢業(yè)設(shè)計(jì)（論文）開題報(bào)告
題目名稱
低位放頂煤液壓支架的設(shè)計(jì)
姓名
專業(yè)班級(jí)
學(xué)號(hào)
一、 選題的目的和意義
隨著工業(yè)技術(shù)的不斷發(fā)展，國(guó)民經(jīng)濟(jì)對(duì)煤炭需要量的日益增加，煤礦開采，特別是采煤工作免得生產(chǎn)技術(shù)面貌發(fā)生了巨大的變化。自1954年英國(guó)裝備了世界上第一個(gè)液壓支架工作滿開始，采煤技術(shù)實(shí)現(xiàn)了綜合機(jī)械化。綜合機(jī)械化采煤，就是工作面采煤，運(yùn)輸和支護(hù)三大主要生產(chǎn)環(huán)節(jié)都實(shí)現(xiàn)機(jī)械化。也就是說，采用滾筒式或刨削式等采煤機(jī)械落煤與裝煤；工作面重型可彎曲運(yùn)輸機(jī)，以及與之適應(yīng)的順槽轉(zhuǎn)載機(jī)和可伸縮皮帶運(yùn)輸機(jī)等運(yùn)煤；自移
式液壓支架支護(hù)和管理頂板。這幾種設(shè)備相互配合，組成了綜合機(jī)械化采煤設(shè)備。
液壓支架是以高壓液體為動(dòng)力，由若干液壓元件（油缸和滑件）與一些金屬結(jié)構(gòu)件組合而成的一種支撐和控制頂板的采煤工作面設(shè)備，能實(shí)現(xiàn)支撐，降落移架和推移運(yùn)輸機(jī)等一整套工序。液壓支架技術(shù)上先進(jìn)，經(jīng)濟(jì)上合理，安全上可靠，當(dāng)前世界各國(guó)都在不斷地提高采煤工作面的綜合機(jī)械化水平。
二、 國(guó)內(nèi)外研究綜述
我國(guó)目前液壓支架與發(fā)達(dá)國(guó)家的差距：
1.生成能力上的差距 我國(guó)目前大部分支架的可靠性與國(guó)外差距比較大。進(jìn)口支架工作面開機(jī)率達(dá)到90%以上，日產(chǎn)達(dá)到了30000t，年產(chǎn)達(dá)到10Mt，支架大修周期為產(chǎn)煤15Mt以上。而我國(guó)目前綜采工作面開機(jī)率平均為50%左右。支架大修周期為產(chǎn)煤量在4～5Mt左右。
2.支護(hù)性能參數(shù)的差距 發(fā)達(dá)國(guó)家在設(shè)計(jì)指導(dǎo)思想方面大多主張大馬拉小車，支架的工作阻力與支護(hù)強(qiáng)度普遍較大。工作阻力一般都在7000KN以上，最高達(dá)到10000KN，而我國(guó)目前支架的工作阻力與國(guó)外相比普遍偏低，平均在4000～5000KN，相差30%左右。
另外，國(guó)外支架中心距普遍采用1.75m，個(gè)別達(dá)到2m，我國(guó)支架中心距絕大多數(shù)為1.5m。
3. 結(jié)構(gòu)件材料的差距 目前國(guó)外σs＝700～800MPa的鋼材以廣泛應(yīng)用，而我國(guó)普遍使用的是σs＝450MPa以下的鋼板，相差30%～40%。
4.控制系統(tǒng)方面的差距 目前世界上一些發(fā)達(dá)國(guó)家支架的控制系統(tǒng)已廣泛采用電液控制系統(tǒng)，而我國(guó)目前很少采用電液控制，絕大部分為手動(dòng)。
液壓支架的發(fā)展趨勢(shì)：
1.提高支架的可靠性，另外加大支架的中心距也是必然趨勢(shì)；
2.二柱支架將是主導(dǎo)架型，目前我國(guó)的四柱支架要比二支柱支架數(shù)量多，相比較而言二柱支架具有明顯的優(yōu)勢(shì)；
3.采用大采高支架；
4.電液控制系統(tǒng)是液壓支架發(fā)展的方向；
5．放頂煤支架將是未來的主導(dǎo)架型；
三、畢業(yè)設(shè)計(jì)（論文）所用的方法
本次設(shè)計(jì)，是本人按照導(dǎo)師的要求，結(jié)合自己的興趣愛好，通過收集大量的理論資料，參加生產(chǎn)實(shí)習(xí)的基礎(chǔ)上，自主完成的畢業(yè)設(shè)計(jì)。其中，在設(shè)計(jì)過程中頂梁和立柱是設(shè)計(jì)的重點(diǎn)。另外，本論文還著重介紹了液壓支架的結(jié)構(gòu)，類型，工作原理，特點(diǎn)，液壓支架的維護(hù)和管理，及其常見的故障及排除方法。目的是通過對(duì)支掩式液壓支架進(jìn)行深入細(xì)致的了解和研究，在一定的理論基礎(chǔ)上，結(jié)合實(shí)踐認(rèn)識(shí)，鞏固所學(xué)知識(shí)，完成自主實(shí)踐與創(chuàng)新。
在設(shè)計(jì)過程中遇到的問題我們一般通過自己查閱資料和小組討論的方式解決，如確實(shí)有不能解決的問題我們就通過請(qǐng)教廠方技術(shù)人員和指導(dǎo)老師，爭(zhēng)取解決在畢業(yè)設(shè)計(jì)過程中所有問題。
四、主要參考文獻(xiàn)與資料獲得情況
參考文獻(xiàn)：
1. 主編《機(jī)械設(shè)計(jì)手冊(cè)》第三版 化學(xué)工業(yè)出版社1999．
2. 武同振 趙宏珠 吳國(guó)華主編《綜采綜掘高檔普采設(shè)備選型配套圖集》中國(guó)礦大出版社1993
3. 楊振復(fù) 羅恩波 主編《放頂煤開采技術(shù)與放頂煤液壓支架》煤炭工業(yè)出版社1995
4. 丁紹南編著《采煤工作面液壓支架設(shè)計(jì)》世界圖書出版社1992
5. 劉鴻文 主編《材料力學(xué)》第三版（上、下）高等教育出版社1992
6. 邢?？? 蔡坫 劉玉堂主編《煤礦支護(hù)手冊(cè)》煤碳工業(yè)出版社1993
五、畢業(yè)設(shè)計(jì)（論文）進(jìn)度安排（按周說明）
1. 5-6周 畢業(yè)實(shí)習(xí)
2. 6周 定出設(shè)計(jì)方案
3. 7-9周 設(shè)計(jì)總體方案設(shè)計(jì)裝配圖
4. 10-12周 零構(gòu)件設(shè)計(jì)
5. 13-14周 畢業(yè)設(shè)計(jì)說明書
六. 指導(dǎo)教師審批意見
指導(dǎo)教師： （簽名）
年 月 日
畢業(yè)設(shè)計(jì)論文 支撐掩護(hù)式液壓支架 中文摘要 現(xiàn)代煤礦高效工作面的關(guān)鍵設(shè)備液壓支架 ,是煤礦實(shí)現(xiàn)采煤、運(yùn)輸和支護(hù)等所有工序 全部機(jī)械化的重要環(huán)節(jié)。 支撐掩護(hù)式支架是以支撐為主 ,掩護(hù)為輔的液壓支架 ,用來控制采場(chǎng)頂板下沉斷裂及 冒落 ,保證控頂距內(nèi)頂板完整和必要的回采空間。對(duì)支撐掩護(hù)式液壓支架的結(jié)構(gòu)特點(diǎn)及合 理應(yīng)用等進(jìn)行了簡(jiǎn)要介紹。為保證支架的合理工作狀態(tài) ,應(yīng)盡量縮短降架時(shí)間 ,快速移架 ,及 時(shí)支護(hù) ,并保持足夠的支架初撐力在詳細(xì)分析液壓支架初撐力與直接頂相互作用機(jī)理的基 礎(chǔ)上,對(duì)支架合理初撐力的確定進(jìn)行了分析研究,并提出了合理支架初撐力的確定方法。 關(guān)鍵詞：液壓支架 支護(hù) 初撐力 畢業(yè)設(shè)計(jì)論文 ABSTRACT Hydraulic Support he hydraulic support is the key equipment in today's high production faces underground,it is important Standing shield hydraulic support can control the subsidence,rupture and inbreak of the stope roof,and assure the integrity of the roof and necessary extraction space.The structural feature and its rational application of standing shield hydraulic are introduced in brief.According to the paper,it is necessary to reduce the time of falling support,to move support quickly,to timber the roof in time and keep enough setting pressure. On the basis of analysis of the reciprocity mechanism of original pressure and direct roof, the author analyzes the setting methods of appropriate original pressure of powered support is put forward finally. Keywords: hydraulic support shoring put forward finally 液壓支架分級(jí)分布式微機(jī)電磁閥液壓控制系統(tǒng)
摘 要 以集散型控制理論為基礎(chǔ)，論述了綜采工作面液壓支架分級(jí)分布式微機(jī)電液控制系統(tǒng)的原理，給出了液壓支架的3種控制模型，設(shè)計(jì)了以MCS-51單片機(jī)為核心的液壓支架控制器，進(jìn)行了控制器的硬件設(shè)計(jì)和軟件調(diào)試。
關(guān)鍵詞 集散型控制系統(tǒng)；液壓支架；單片機(jī)
中圖分類號(hào) TP273；TD355.4
A Distributed Computer Control System
of Mining Hydraulic Support
Ma Chunyan Li Gengxin Yang Jiankang
(College of Information Engineering of TUT)(Jin Cheng Mining Bureau)
Abstract This paper presents the principles of distributed computer control system of mining hydraulic support for the coalface with complex cutting equipment on the basis of the distributed computer control theory.Three control modes of the hydraulic support are supplied in the paper.It also deals with the design of the hydraulic support controller with the pricipal part of a MCS-51 single chip computer.In addition,the hardware circuits design and software program adjustment of the controller are also mentioned in the paper.
Key words distributed computer control system;hydraulic support;
single chip microcomputer
采煤工作面綜合機(jī)械化設(shè)備CCME(Coalface Complex Mechanical Equipements),主要由采煤機(jī)、液壓支架和刮板運(yùn)輸機(jī)(俗稱煤溜子)等設(shè)備組成。液壓支架是綜合機(jī)械化采煤工作面的主要設(shè)備之一，它分散布置在整個(gè)采煤工作面上。一個(gè)工作面一般裝備100架左右或更多的液壓支架。為了有效地提高綜采工作面的生產(chǎn)效率和管理水平，本文以集散型控制系統(tǒng)DCCS(Distributed Computer Control Systems)理論為基礎(chǔ)，設(shè)計(jì)了液壓支架分級(jí)分布式微機(jī)電液控制系統(tǒng)。
中文摘要
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課題根據(jù)當(dāng)前綜合機(jī)械化采煤工作面所采用支護(hù)方式暴露出來的問題，提出采用自移式超前支護(hù)液壓支架對(duì)綜放面端頭進(jìn)行超前支護(hù)；考慮到現(xiàn)今液壓支架生產(chǎn)企業(yè)在產(chǎn)品開發(fā)過程中存在的種種弊端，提出將虛擬樣機(jī)技術(shù)應(yīng)用到液壓支架的設(shè)計(jì)開發(fā)中。在支架投入生產(chǎn)之前在計(jì)算機(jī)上仿真和修改數(shù)字樣機(jī)，縮短了研發(fā)周期，提高了產(chǎn)品質(zhì)量，減少了由于制造物理樣機(jī)而增加的成本。本課題也為其他機(jī)械產(chǎn)品的開發(fā)提供了一個(gè)成功的范例。課題介紹了虛擬樣機(jī)技術(shù)、國(guó)內(nèi)外液壓支架的發(fā)展?fàn)顩r以及利用虛擬樣機(jī)技術(shù)進(jìn)行自移式超前支架開發(fā)的意義；介紹了自移式超前支架的結(jié)構(gòu)特點(diǎn)、承載原理以及應(yīng)用MALTAB語言編寫M文件的方式自動(dòng)計(jì)算出自移式超前支架的主要技術(shù)參數(shù)；介紹了自移式超前支架液壓控制系統(tǒng)的特點(diǎn)和常用的液壓基本回路，設(shè)計(jì)出自移式超前支架的液壓控制系統(tǒng)，提出基于虛擬樣機(jī)技術(shù)的液壓控制系統(tǒng)的實(shí)現(xiàn)方法。在UG-NX環(huán)境下完成了自移式超前支架零部件的三維造型設(shè)計(jì)并采用自底向上的裝配方式，完成了支架的虛擬裝配，查找設(shè)計(jì)不合理的因素，計(jì)算出自移式超前支架的質(zhì)量、體積、轉(zhuǎn)動(dòng)慣量等物理特性，并且完成了從3D實(shí)體模型圖到2D工程圖的生成。將零部件的3D模型按照Parasolid標(biāo)準(zhǔn)輸出“.x_t”文件，為ANSYS進(jìn)行有限元分析做準(zhǔn)備。介紹了有限元法的基本原理及其求解步驟，在研究CAE技術(shù)和CAD技術(shù)之間的數(shù)據(jù)傳輸?shù)幕A(chǔ)上，提出利用ANSYS和UG-NX的數(shù)據(jù)接口，將UG-NX環(huán)境下輸出的“.x_t”文件導(dǎo)入ANSYS環(huán)境下，進(jìn)行網(wǎng)格劃分、約束加載求解、后處理，完成自移式超前支架主要承載部件（如頂梁等）的應(yīng)變、應(yīng)力分析，根據(jù)零部件在承載狀態(tài)下變形量的大小驗(yàn)證零部件的設(shè)計(jì)是否合理。
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外文摘要
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The thesis raises designing the automatic advanced hydraulic bracket to support the terminal of the working fields according to the problems exposed to the supporting method nowadays being used in mechanized coal cutting. Considering the hydraulic bracket company has many maladies during the development of the products, The thesis raises adopting Virtual Prototyping to design the product. By simulation and modifying digital prototyping on computer before product, we can reduce the costs and shorten the design interval and improve the quality of the products. The theme also provides a successful paradigm for the design of other machinery products. The thesis introduces Virtual Prototyping technology, development of the hydraulic supports and the significance of designing automatic advanced bracket based on Virtual Prototyping technology. The thesis introduces the structure features of the bracket, the principle for enduring the load and instructs a method of counting key technology parameters using MATLAB to edit M files. The features and the fundamental circuit of the hydraulic controlling system are also instructed, and the hydraulic controlling system of the automatic advanced bracket is designed, putting forward the method of emulating based on the Virtual Prototyping technology. The thesis achieves three dimension design for the parts of the bracket, and completes virtual assemble using Bottom-Up assembly, checking irrational factors in the design, counting the quality, volume and the retary inertia of the assembly solid and creating engineering drawing from 3D model to 2D view in UG-NX. “.x_t” files of the 3D models are exported by Parasolid standard and make ready for the analysis using ANSYS software. The thesis instructs the principle for the FEA and solving steps, put forward the method of guiding the “.x_t” file into ANSYS conditions based on the investigation of the interface between the CAE technology and CAD technology, making analysis of stress and strain for the main loading parts (ef. upper beam, etc) of the automatic advanced bracket by meshing, loading-solving and postprocessing, and verifying the result of the design of the parts in loading conditions according to the strain.
高強(qiáng)度結(jié)構(gòu)鋼的焊接試驗(yàn)及液壓支架有限元分析/THE WELDING EXPERIMENTS OF HIGH STRENGTH STRUCTURAL STEEL AND THE FINITE ELEMENT STRENHTH ANLYSIS OF FLUID POWER BEARER
中文摘要
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本文對(duì)抗拉強(qiáng)度為800 高強(qiáng)鋼WH80的焊接性能進(jìn)行了研究，實(shí)驗(yàn)數(shù)據(jù)表明高強(qiáng)鋼WH80可以用于支架設(shè)計(jì)。初步總結(jié)了一套焊接工藝，包括預(yù)熱溫度的確定、低強(qiáng)度匹配的可行性、焊接速度的選取以及線能量的確定等，這些研究方法與手段可以直接用于生產(chǎn)實(shí)踐。對(duì)支架整架結(jié)構(gòu)件裝配體進(jìn)行了應(yīng)力分析，建立了具體的分析模型，對(duì)于外載荷的處理、邊界條件的確定提出了具體的處理方法，建立了完整的支架簡(jiǎn)化結(jié)構(gòu)模型。通過研究，可以得出如下結(jié)論： (1) 高強(qiáng)鋼WH80屬于低焊接冷裂紋敏感性鋼，可用作支架設(shè)計(jì)板材。 (2) WH80鋼可以選用比母材強(qiáng)度低的焊接材料J707RH進(jìn)行焊接，以使接頭強(qiáng)度與母材強(qiáng)度等強(qiáng)。 (3) 預(yù)熱溫度的確定除考慮材料化學(xué)成份外，還應(yīng)考慮到晶向組織的變化。對(duì)于WH8O高強(qiáng)鋼為防止脆化，預(yù)熱溫度應(yīng)選定在120 左右。 (4) 支架在頂梁偏載工況下受力狀況最為惡劣，表現(xiàn)為支架頂梁、斜梁、前后連桿和底座等處都有較大的應(yīng)力分布。 (5) 最高Von Mises應(yīng)力分布表現(xiàn)為區(qū)域性、局部性的存在，在實(shí)際設(shè)計(jì)中應(yīng)考慮在該區(qū)域施以高強(qiáng)度板材，而無需整架采用高強(qiáng)度板材，以節(jié)省支架成本。
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外文摘要
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This topic research content was 800 high tensile steel WH80 welding performance conducts the research to the tensile strength, the empirical datum had indicated high tensile steel WH80 was allowed to use in the support design. This topic research initially summarized set of weldings crafts, including the preheating temperature determination, the low intensity match feasibility, the welding speed selection as well as the line energy indeed grades, these research techniques and the method may directly use in the production practice. Has carried on the stress analysis to the support entire frame structural element assembly body, has established the concrete analysis model, regarding outside load processing, the boundary condition determination proposed the concrete processing method, established the integrity support to simplify the structural model. Through the research, we may draw following conclusion: (1) High tensile steel WH80 belongs to the low welding cold crack sensitive steel and may serve as the support design plate. (2) The WH80 steel may select compared to parent metal intensity low welding material J707RH carries on the welding, causes the attachment intensity and the parent metal intensity and so on is strong. (3) Preheating temperature determination besides consideration material chemical composition, but also should consider the crystal to organization's change. For prevents the embrittlement regarding the WH8O high tensile steel, the preheating temperature should designate about 120. (4) The support carries under the operating mode in the top-beam the stress condition to be worst, displays for the support top-beam, Sloping beams, around the connecting rod and the foundation and so on place all has the bigger stress distribution. (5) Highest Von the Mises stress distribution performance for the regional characteristic, the partial existence, in the actual design should consider serves with the high strength plate in this region, but need not the entire frame to use the high strength plate, saves the support cost.
現(xiàn)代煤礦高效工作面的關(guān)鍵設(shè)備液壓支架 ,是煤礦實(shí)現(xiàn)采煤、運(yùn)輸和支護(hù)等所有工序全部機(jī)械化的重要環(huán)節(jié)。結(jié)合多年的液壓支架制造經(jīng)驗(yàn) ,分析了液壓支架標(biāo)準(zhǔn)化現(xiàn)狀及弊端 ,進(jìn)而對(duì)液壓支架標(biāo)準(zhǔn)化的實(shí)施途徑提出了建議 ,以期對(duì)推動(dòng)液壓支架標(biāo)準(zhǔn)化的進(jìn)程有所裨益
【英文摘要】 The hydraulic support is the key equipment in today's high production faces underground,it is important tache to realize the mechanisation of all process including mining,transport and shoring etc.Combining years experience of the hydraulic support production,author analysed hydraulic support standardization present situation and abuse,and then made suggestion about the implement channel of hydraulic support standardization,in order to for promote the process of hydraulic support standardization benifit.
在詳細(xì)分析液壓支架初撐力與直接頂相互作用機(jī)理的基礎(chǔ)上,對(duì)支架合理初撐力的確定進(jìn)行了分析研究,并提出了合理支架初撐力的確定方法。
【英文摘要】 On the basis of analysis of the reciprocity mechanism of original pressure and direct roof, the author analyzes the setting methods of appropriate original pressure of powered support is put forward finally.
綜合分析了國(guó)產(chǎn)液壓支架與國(guó)外先進(jìn)國(guó)家支架間在技術(shù)性能、控制系統(tǒng)、元件制造以及工作介質(zhì)等諸方面的差異,設(shè)計(jì)了以插裝閥為控制元件的液壓系統(tǒng),研究了以水為工作介質(zhì)的支架液壓元件制造技術(shù)。
【英文摘要】 The paper gives a synthetic analysis to the difference between homemade hydraulic timbering and imported one from advanced country on technical properties, control system, parts manufacture and working medium etc., designs the hydraulic system which is used plug-in valve as controlling part and researches the manufacturing technique of hydraulic part in timbering which is working by the medium of water
課題根據(jù)當(dāng)前綜合機(jī)械化采煤工作面所采用支護(hù)方式暴露出來的問題，提出采用自移式超前支護(hù)液壓支架對(duì)綜放面端頭進(jìn)行超前支護(hù)；考慮到現(xiàn)今液壓支架生產(chǎn)企業(yè)在產(chǎn)品開發(fā)過程中存在的種種弊端，提出將虛擬樣機(jī)技術(shù)應(yīng)用到液壓支架的設(shè)計(jì)開發(fā)中。在支架投入生產(chǎn)之前在計(jì)算機(jī)上仿真和修改數(shù)字樣機(jī)，縮短了研發(fā)周期，提高了產(chǎn)品質(zhì)量，減少了由于制造物理樣機(jī)而增加的成本。本課題也為其他機(jī)械產(chǎn)品的開發(fā)提供了一個(gè)成功的范例。
課題介紹了虛擬樣機(jī)技術(shù)、國(guó)內(nèi)外液壓支架的發(fā)展?fàn)顩r以及利用虛擬樣機(jī)技術(shù)進(jìn)行自移式超前支架開發(fā)的意義；介紹了自移式超前支架的結(jié)構(gòu)特點(diǎn)、承載原理以及應(yīng)用MATLAB 語言編寫M 文件的方式自動(dòng)計(jì)算出自移式超前支架的主要技術(shù)參數(shù)；介紹了自移式超前支架液壓控制系統(tǒng)的特點(diǎn)和常用的液壓基本回路，設(shè)計(jì)出自移式超前支架的液壓控制系統(tǒng)，提出基于虛擬樣機(jī)技術(shù)的液壓控制系統(tǒng)的實(shí)現(xiàn)方法。在UG-NX 環(huán)境下完成了自移式超前支架零部件的三維造型設(shè)計(jì)并采用自底向上的裝配方式，完成了支架的虛擬裝配，查找設(shè)計(jì)不合理的因素，計(jì)算出自移式超前支架的質(zhì)量、體積、轉(zhuǎn)動(dòng)慣量等物理特性，并且完成了從3D 實(shí)體模型圖到2D 工程圖的生成。將零部件的3D 模型按照Parasolid 標(biāo)準(zhǔn)輸出“.x_t”文件，為ANSYS 進(jìn)行有限元分析做準(zhǔn)備。介紹了有限元法的基本原理及其求解步驟，在研究CAE技術(shù)和CAD技術(shù)之間的數(shù)據(jù)傳輸?shù)幕A(chǔ)上，提出利用ANSYS 和UG-NX 的數(shù)據(jù)接口UG-NX 環(huán)境下輸出的“.x_t”文件導(dǎo)入ANSYS 環(huán)境下，進(jìn)行網(wǎng)格劃分、約束加載求解、后處理，完成自移式超前支架主要承載部件（如頂梁等）的應(yīng)變、應(yīng)力分析，根據(jù)零部件在承載狀態(tài)下變形量的大小驗(yàn)證零部件的設(shè)計(jì)是否合理。
關(guān)鍵詞：虛擬樣機(jī)，自移式超前支架，Parasolid，ANSYS
ABSTRACT
The thesis raises designing the automatic advanced hydraulic bracket to support the
terminal of the working fields according to the problems exposed to the supporting methodnowadays being used in mechanized coal cutting. Considering the hydraulic bracket companyhas many maladies during the development of the products, The thesis raises adopting Virtual Prototyping to design the product. By simulation and modifying digital prototyping oncomputer before product, we can reduce the costs and shorten the design interval and improvethe quality of the products. The theme also provides a successful paradigm for the design ofother machinery products.
The thesis introduces Virtual Prototyping technology, development of the hydraulic
supports and the significance of designing automatic advanced bracket based on VirtualPrototyping technology. The thesis introduces the structure features of the bracket, theprinciple for enduring the load and instructs a method of counting key technology parametersusing MATLAB to edit M files. The features and the fundamental circuit of the hydrauliccontrolling system are also instructed, and the hydraulic controlling system of the automaticadvanced bracket is designed, putting forward the method of emulating based on the VirtualPrototyping technology. The thesis achieves three dimension design for the parts of thebracket, and completes virtual assemble using Bottom-Up assembly, checking irrationalfactors in the design, counting the quality, volume and the retary inertia of the assembly solidand creating engineering drawing from 3D model to 2D view in UG-NX. “.x_t” files of the3D models are exported by Parasolid standard and make ready for the analysis using ANSYSsoftware. The thesis instructs the principle for the FEA and solving steps, put forward themethod of guiding the “.x_t” file into ANSYS conditions based on the investigation of theinterface between the CAE technology and CAD technology, making analysis of stress andstrain for the main loading parts (ef. upper beam, etc) of the automatic advanced bracket bymeshing, loading-solving and postprocessing, and verifying the result of the design of theparts in loading conditions according to the strain.
Keywords：Virtual Prototyping, automatic advanced bracket, Parasolid, ANSYS
II
現(xiàn)代煤礦高效工作面的關(guān)鍵設(shè)備液壓支架 ,是煤礦實(shí)現(xiàn)采煤、運(yùn)輸和支護(hù)等所有工序全部機(jī)械化的重要環(huán)節(jié)。
支撐掩護(hù)式支架是以支撐為主 ,掩護(hù)為輔的液壓支架 ,用來控制采場(chǎng)頂板下沉斷裂及冒落 ,保證控頂距內(nèi)頂板完整和必要的回采空間。對(duì)支撐掩護(hù)式液壓支架的結(jié)構(gòu)特點(diǎn)及合理應(yīng)用等進(jìn)行了簡(jiǎn)要介紹。為保證支架的合理工作狀態(tài) ,應(yīng)盡量縮短降架時(shí)間 ,快速移架 ,及時(shí)支護(hù) ,并保持足夠的支架初撐力在詳細(xì)分析液壓支架初撐力與直接頂相互作用機(jī)理的基礎(chǔ)上,對(duì)支架合理初撐力的確定進(jìn)行了分析研究,并提出了合理支架初撐力的確定方法。
【英文摘要】The hydraulic support is the key equipment in today's high production faces underground,it is important
Standing shield hydraulic support can control the subsidence,rupture and inbreak of the stope roof,and assure the integrity of the roof and necessary extraction space.The structural feature and its rational application of standing shield hydraulic are introduced in brief.According to the paper,it is necessary to reduce the time of falling support,to move support quickly,to timber the roof in time and keep enough setting pressure. On the basis of analysis of the reciprocity mechanism of original pressure and direct roof, the author analyzes the setting methods of appropriate original pressure of powered support is put forward finally.
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