裝配圖低位放頂煤液壓支架的設(shè)計(1),裝配,低位,放頂煤,液壓,支架,設(shè)計 畢業(yè)設(shè)計論文 支撐掩護式液壓支架 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 ,是煤礦實現(xiàn)采煤、運輸和支護等所有工序 全部機械化的重要環(huán)節(jié)。 支撐掩護式支架是以支撐為主 ,掩護為輔的液壓支架 ,用來控制采場頂板下沉斷裂及 冒落 ,保證控頂距內(nèi)頂板完整和必要的回采空間。對支撐掩護式液壓支架的結(jié)構(gòu)特點及合 理應(yīng)用等進行了簡要介紹。為保證支架的合理工作狀態(tài) ,應(yīng)盡量縮短降架時間 ,快速移架 ,及 時支護 ,并保持足夠的支架初撐力在詳細分析液壓支架初撐力與直接頂相互作用機理的基 礎(chǔ)上,對支架合理初撐力的確定進行了分析研究,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 初撐力 畢業(yè)設(shè)計論文 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 液壓支架分級分布式微機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分布式微機電液控制系統(tǒng)的原理，給出了液壓支架的3種控制模型，設(shè)計了以MCS-51單片機為核心的液壓支架控制器，進行了控制器的硬件設(shè)計和軟件調(diào)試。 　　關(guān)鍵詞　集散型控制系統(tǒng)；液壓支架；單片機 　　中圖分類號　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 　　采煤工作面綜合機械化設(shè)備CCME(Coalface Complex Mechanical Equipements),主要由采煤機、液壓支架和刮板運輸機(俗稱煤溜子)等設(shè)備組成。液壓支架是綜合機械化采煤工作面的主要設(shè)備之一，它分散布置在整個采煤工作面上。一個工作面一般裝備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)計了液壓支架分級分布式微機電液控制系統(tǒng)。 中文摘要 　 ? 課題根據(jù)當前綜合機械化采煤工作面所采用支護方式暴露出來的問題，提出采用自移式超前支護液壓支架對綜放面端頭進行超前支護；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，提出將虛擬樣機技術(shù)應(yīng)用到液壓支架的設(shè)計開發(fā)中。在支架投入生產(chǎn)之前在計算機上仿真和修改數(shù)字樣機，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而增加的成本。本課題也為其他機械產(chǎn)品的開發(fā)提供了一個成功的范例。課題介紹了虛擬樣機技術(shù)、國內(nèi)外液壓支架的發(fā)展狀況以及利用虛擬樣機技術(shù)進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、承載原理以及應(yīng)用MALTAB語言編寫M文件的方式自動計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)的特點和常用的液壓基本回路，設(shè)計出自移式超前支架的液壓控制系統(tǒng)，提出基于虛擬樣機技術(shù)的液壓控制系統(tǒng)的實現(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)計不合理的因素，計算出自移式超前支架的質(zhì)量、體積、轉(zhuǎn)動慣量等物理特性，并且完成了從3D實體模型圖到2D工程圖的生成。將零部件的3D模型按照Parasolid標準輸出“.x_t”文件，為ANSYS進行有限元分析做準備。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)下變形量的大小驗證零部件的設(shè)計是否合理。 ? 外文摘要 　 ? 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. 高強度結(jié)構(gòu)鋼的焊接試驗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 　 ? 本文對抗拉強度為800 高強鋼WH80的焊接性能進行了研究，實驗數(shù)據(jù)表明高強鋼WH80可以用于支架設(shè)計。初步總結(jié)了一套焊接工藝，包括預(yù)熱溫度的確定、低強度匹配的可行性、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)實踐。對支架整架結(jié)構(gòu)件裝配體進行了應(yīng)力分析，建立了具體的分析模型，對于外載荷的處理、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化結(jié)構(gòu)模型。通過研究，可以得出如下結(jié)論： (1) 高強鋼WH80屬于低焊接冷裂紋敏感性鋼，可用作支架設(shè)計板材。 (2) WH80鋼可以選用比母材強度低的焊接材料J707RH進行焊接，以使接頭強度與母材強度等強。 (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。對于WH8O高強鋼為防止脆化，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，在實際設(shè)計中應(yīng)考慮在該區(qū)域施以高強度板材，而無需整架采用高強度板材，以節(jié)省支架成本。 ? 外文摘要 　 ? 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 ,是煤礦實現(xiàn)采煤、運輸和支護等所有工序全部機械化的重要環(huán)節(jié)。結(jié)合多年的液壓支架制造經(jīng)驗 ,分析了液壓支架標準化現(xiàn)狀及弊端 ,進而對液壓支架標準化的實施途徑提出了建議 ,以期對推動液壓支架標準化的進程有所裨益 【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. 在詳細分析液壓支架初撐力與直接頂相互作用機理的基礎(chǔ)上,對支架合理初撐力的確定進行了分析研究,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. 綜合分析了國產(chǎn)液壓支架與國外先進國家支架間在技術(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)當前綜合機械化采煤工作面所采用支護方式暴露出來的問題，提出采用自移式超前支護液壓支架對綜放面端頭進行超前支護；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，提出將虛擬樣機技術(shù)應(yīng)用到液壓支架的設(shè)計開發(fā)中。在支架投入生產(chǎn)之前在計算機上仿真和修改數(shù)字樣機，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而增加的成本。本課題也為其他機械產(chǎn)品的開發(fā)提供了一個成功的范例。 課題介紹了虛擬樣機技術(shù)、國內(nèi)外液壓支架的發(fā)展狀況以及利用虛擬樣機技術(shù)進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、承載原理以及應(yīng)用MATLAB 語言編寫M 文件的方式自動計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)的特點和常用的液壓基本回路，設(shè)計出自移式超前支架的液壓控制系統(tǒng)，提出基于虛擬樣機技術(shù)的液壓控制系統(tǒng)的實現(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)計不合理的因素，計算出自移式超前支架的質(zhì)量、體積、轉(zhuǎn)動慣量等物理特性，并且完成了從3D 實體模型圖到2D 工程圖的生成。將零部件的3D 模型按照Parasolid 標準輸出“.x_t”文件，為ANSYS 進行有限元分析做準備。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)下變形量的大小驗證零部件的設(shè)計是否合理。 關(guān)鍵詞：虛擬樣機，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 ,是煤礦實現(xiàn)采煤、運輸和支護等所有工序全部機械化的重要環(huán)節(jié)。 支撐掩護式支架是以支撐為主 ,掩護為輔的液壓支架 ,用來控制采場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。對支撐掩護式液壓支架的結(jié)構(gòu)特點及合理應(yīng)用等進行了簡要介紹。為保證支架的合理工作狀態(tài) ,應(yīng)盡量縮短降架時間 ,快速移架 ,及時支護 ,并保持足夠的支架初撐力在詳細分析液壓支架初撐力與直接頂相互作用機理的基礎(chǔ)上,對支架合理初撐力的確定進行了分析研究,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. 液壓支架的應(yīng)用及意義 隨著工業(yè)技術(shù)的不斷發(fā)展，國民經(jīng)濟對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年英國裝備了世界上第一個液壓支架工作滿開始，采煤技術(shù)實現(xiàn)了綜合機械化。綜合機械化采煤，就是工作面采煤，運輸和支護三大主要生產(chǎn)環(huán)節(jié)都實現(xiàn)機械化。也就是說，采用滾筒式或刨削式等采煤機械落煤與裝煤；工作面重型可彎曲運輸機，以及與之適應(yīng)的順槽轉(zhuǎn)載機和可伸縮皮帶運輸機等運煤；自移 式液壓支架支護和管理頂板。這幾種設(shè)備相互配合，組成了綜合機械化采煤設(shè)備。 液壓支架是以高壓液體為動力，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，能實現(xiàn)支撐，降落移架和推移運輸機等一整套工序。液壓支架技術(shù)上先進，經(jīng)濟上合理，安全上可靠，當前世界各國都在不斷地提高采煤工作面的綜合機械化水平。 我國于1964年開始研制液壓支架，已先后試制了MZ-1928型,TZ型,BZZC型,WKM-400型,DM-400型,YZ型,ZYZ型,ZY型等多種形式的液壓支架，并在開灤，大同，陽泉，鶴壁，徐州，銅川，義馬，淮北等局礦進行了試驗和使用，取得了較好的效果。1974年以來，從西德，英國，前蘇聯(lián)和波蘭等國引進了許多不同類型的液壓支架。實踐證明，液壓支架具有強度高，支護性能好，移設(shè)速度快，安全可靠等優(yōu)點，能使采煤工作面達到高產(chǎn)量，高回采率和高工效，能大大減輕勞動強度，降低成本和掘進率，實現(xiàn)安全生產(chǎn)。 國外放頂煤液壓支架 放頂煤綜采能否成功還取決于能否針對具體的使用條件進行放頂煤液壓支架的合理選型和設(shè)計。一般說來，它要滿足對頂煤具有良好的支護效果，同時還要滿足順利放煤，運煤，行人，通風(fēng)，移架和對采煤工作干擾小等一系列要求。國外的放頂煤液壓支架發(fā)展較早。法國60年代初就成批生產(chǎn)放頂煤液壓支架?，F(xiàn)將各主要放頂煤液壓支架生產(chǎn)國家研制，生產(chǎn)，使用的放頂煤支架及其主要特點做一簡要介紹。 法國放頂煤液壓支架；法國主要生產(chǎn)放頂煤液壓支架的為瑪雷爾公司。其生產(chǎn)的第一代放頂煤液壓支架是帶香蕉尾架的支撐掩護式支架。由于第一代香蕉尾梁式支架存在工人在尾梁處放煤不安全；處理大塊煤困難；頂Kn/架煤排放無法有效控制等，常造成壓死輸送機的現(xiàn)象。而且，該支架工作阻力也較低，僅1500。第二代放頂煤支架按照此基礎(chǔ)上作了較大的改進，基本避免了這些缺陷。工作阻力增加到3000--4000 Kn/架。支架間安設(shè)防到防滑千斤頂，使支架可以在傾角30度的工作面使用。擴大了支架啊的使用范圍。 英國放頂煤液壓支架；英國生產(chǎn)放頂煤液壓支架的主要有道梯公司和伽力克公司。英國70年代才開始研制放頂煤液壓支架。由于英國國內(nèi)吧不采用放頂煤開采，其生產(chǎn)的放頂煤液壓支架主要用于出口。支架的主要特點為：放煤門面積大，便于頂煤垮落進入后部輸送機；采用四連桿機構(gòu)，頂梁對頂板的接觸及支架穩(wěn)定性較好，后輸送機置于支架加長底座上。利用工作面輸送機的移溜千斤頂回液進入后部立柱，使后輸送機相對與支架向后推出，而放頂煤位置不變。 德國放頂煤液壓支架：德國70年代末80年代初開始生產(chǎn)放頂煤液壓支架。有代表性的支架為bs2.2型插板式支撐掩護 畢業(yè)設(shè)計說明書 第2頁 共2頁 目 錄 前 言…………………………………………………………………………1 一、 緒　論 …………………………………………………………………2 1.1 液壓支架的作用及發(fā)展歷史 ………………………………………………2 1.1.1 液壓支架的應(yīng)用及意義…… ……………………………………………………2 1.1.2 國外放頂煤液壓支架 ……………………………………………………………2 1.1.3 液壓支架的發(fā)展動向 ……………………………………………………………3 1.2 設(shè)計目的 ……………………………………………………………………4 1.3 設(shè)計要求 ……………………………………………………………………4 1.4 放頂煤液壓支架的分類……………………………… ……………………5 1.5 低位放頂煤液壓支架的特點…………………………… …………………5 1.6 低位放頂煤液壓支架的適應(yīng)性……………………… ……………………7 1.7 低位放頂煤液壓支架的主要結(jié)構(gòu)………………………… ………………7 1.7.1 低位放項煤支架主要部件設(shè)計要求………………………… …………………8 1.7.2前粱的設(shè)計………………………………………………… … …………………9 1.7.2頂粱的設(shè)計………………………………………………… … ………………10 1.7.4 掩護梁的設(shè)計……………………………………………………………………11 1.7.5 底座的設(shè)計………………………………………………………………………12 1.7.6 四連桿機構(gòu)的連桿設(shè)計…………………………………………………………14 1.7.7 推移機構(gòu)的設(shè)計…………………………………………………………………15 1.7.8 放煤口及放煤機構(gòu)的設(shè)計………………………………………………………16 二、 液壓支架的結(jié)構(gòu)設(shè)計……………………………………………………18 2.1 液壓支架的選型…………………………………………………………18 2.1.1 液壓支架結(jié)構(gòu)類型的優(yōu)選……………………………………………………18　　2.1.2液壓支架的架形選擇原則… …………………………………………………19 2.1.3影響架形選擇的因素 …………………………………………………………20 2.2 主要設(shè)計參數(shù)……………………………………………………………21 2.3液壓支架的結(jié)構(gòu)設(shè)計 ……………………………………………………23 2.3.1液壓支架主要結(jié)構(gòu)參數(shù)和形式的確定…………………………………23 2.3.2液壓支架的總體布置…………………………………………………………29 2.3.3支架的主要結(jié)構(gòu)………………………………………………………………30 2.3.4主要參數(shù)的確定………………………………………………………………34 2.4擬定液壓系統(tǒng)…… ………………………………………………………39 三、 支架的強度計算…………………………………………………………42 3.1 支架的工作狀態(tài) …………………………………………………………42 3.2 支架載荷的確定 …………………………………………………………42 3.3 支架受力分析 ……………………………………………………………43 3.3.1各主要參數(shù)的影響……………………………………………………………46 3.3.2各主要部件的強度校核………………………………………………………48 3.4 支架受力的影響因素 ……………………………………………………66 3.5 強度條件 …………………………………………………………………67 四、 液壓支架的使用操作及維護 ……………………………………………62 4.1 液壓支架操作 ……………………………………………………………69 4.2 液壓支架操作維護要求 …………………………………………………64 4.3 液壓支架操作管理事項 …………………………………………………70 五、 液壓支架常見故障及其排除 …………………………………………72 5.1 結(jié)構(gòu)件和連接銷軸 ………………………………………………………72 5.2 液壓系統(tǒng)及液壓元件 ……………………………………………………72 5.3 支架在操作和支護過程中的故障 ………………………………………73 結(jié) 論……………………………………………………………………………75 致 謝……………………………………………………………………………76 參考書目…………………………………………………………………………77 附 錄…………………………………………………………………………78