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大慶石油學(xué)院
畢業(yè)設(shè)計(jì)（論文）任務(wù)書
題目 MG100型錨桿鉆機(jī)液壓系統(tǒng)設(shè)計(jì)
專業(yè) 機(jī)自03－4 學(xué)號(hào)030401140407 姓名 刁玉才
主要內(nèi)容、技術(shù)參數(shù)、基本要求、主要參考資料等：
1、 主要內(nèi)容
錨桿鉆機(jī)的總體方案設(shè)計(jì)；
錨桿鉆機(jī)的液壓動(dòng)力裝置設(shè)計(jì)分析；
錨桿鉆機(jī)的液壓系統(tǒng)原理設(shè)計(jì)分析；
錨桿鉆機(jī)的液壓系統(tǒng)的配件與三維布管設(shè)計(jì)。
2、 技術(shù)參數(shù)
鉆孔直徑 100～200 mm；
鉆頭轉(zhuǎn)速 0～80r/min；
鉆頭扭矩 900Nm；
鉆頭行程 2000～2500 mm ；
推力 50～60 kN；
沖擊頻率 2000～2200次/min ；
系統(tǒng)壓力 25MPa；
發(fā)動(dòng)機(jī) 100kW；
行走方式 履帶式；
重量 12000～14000 kg
3、基本要求
設(shè)計(jì)機(jī)器總體、液壓原理圖、液壓配件圖、液壓裝配圖、機(jī)器立體圖等，折合0號(hào)圖紙5張；
設(shè)計(jì)計(jì)算書40頁(yè)；
外文資料翻譯5000字。
4、主要參考資料
相關(guān)三維設(shè)計(jì)與仿真軟件及參考書籍；
相關(guān)機(jī)械設(shè)計(jì)手冊(cè)、液壓手冊(cè)、網(wǎng)上期刊文獻(xiàn)、相關(guān)樣本等。
完成期限： 4月9日～6月26日
指導(dǎo)教師簽名：
專業(yè)負(fù)責(zé)人簽名：
2007年 4月3日
大慶石油學(xué)院學(xué)生開題報(bào)告表
課題名稱
MG100型錨桿鉆機(jī)液壓系統(tǒng)設(shè)計(jì)
課題來(lái)源
北京建筑機(jī)械化研究院
課題類型
A
指導(dǎo)教師姓名
趙偉民
學(xué)生姓名
刁玉才
學(xué) 號(hào)
030401140407
專 業(yè)
機(jī)械設(shè)計(jì)制造及其自動(dòng)化
開題報(bào)告內(nèi)容：（調(diào)研資料的準(zhǔn)備，設(shè)計(jì)目的、要求、思路與預(yù)期成果；任務(wù)完成的階段內(nèi)容及時(shí)間安排；完成設(shè)計(jì)（論文）所具備的條件因素等。）
一 前期調(diào)研
鉆孔機(jī)械是地下水開采及基本建設(shè)基礎(chǔ)施工必不可少的設(shè)備， 鉆機(jī)產(chǎn)品也隨之進(jìn)入快速發(fā)展的階段。近年來(lái)， 國(guó)內(nèi)的許多廠家相繼生產(chǎn)出各種形式的反循環(huán)鉆機(jī)， 應(yīng)用于全國(guó)各地的橋梁、建筑、水利等工程施工過程中。但從現(xiàn)有的國(guó)產(chǎn)沖擊反循環(huán)鉆機(jī)的使用情況來(lái)看， 仍存在一些問題需要認(rèn)真討論與分析， 并在技術(shù)上作出相應(yīng)的改進(jìn)和提高， 才能更有利于我國(guó)鉆機(jī)制造業(yè)的發(fā)展， 并但從現(xiàn)有的國(guó)產(chǎn)沖擊反循環(huán)鉆機(jī)的使用情況來(lái)看，進(jìn)一步提高我國(guó)同類鉆機(jī)的設(shè)計(jì)和制造水平。其中錨桿鉆機(jī)是實(shí)現(xiàn)錨桿支護(hù)技術(shù)的重要機(jī)械設(shè)備,隨著錨桿支護(hù)技術(shù)的飛速發(fā)展,用于鉆鑿錨桿孔的錨桿鉆機(jī)也得到了快速發(fā)展。展望它的發(fā)展,有助于不斷促進(jìn)錨桿鉆機(jī)設(shè)備的技術(shù)進(jìn)步,使其更加適應(yīng)現(xiàn)代支護(hù)技術(shù)的需要。
以往鉆機(jī)的設(shè)計(jì)研制過程,比較注重鉆機(jī)本身的輸出特性,一味通過追求盡可能大的轉(zhuǎn)速和轉(zhuǎn)矩來(lái)提高鉆機(jī)的破巖鉆進(jìn)能力。但對(duì)于單體錨桿鉆機(jī)來(lái)說,要求體積小,重量輕,因而不能無(wú)限止地提高轉(zhuǎn)速、轉(zhuǎn)矩和推力。只有最大限度地提高鉆機(jī)輸出功率的利用率,即提高破巖鉆削效率,才能在有限的輸出功率下取得較高的鉆進(jìn)速度。
隨著錨噴支護(hù)技術(shù)的推廣和應(yīng)用，作為錨噴施工工具的錨桿鉆機(jī)的優(yōu)劣直接影響著錨桿孔施工和生產(chǎn)效率，錨桿鉆機(jī)按動(dòng)力源分電動(dòng)錨桿鉆機(jī)、氣動(dòng)錨桿鉆機(jī)和液壓錨桿鉆機(jī)。其中電動(dòng)錨桿鉆機(jī)的輸出特性較差,鉆孔速度低,電機(jī)可靠性及防水性存在嚴(yán)重問題,尚無(wú)良好的推進(jìn)方式。近期尚難大量用于井下錨桿支護(hù); 國(guó)產(chǎn)氣動(dòng)錨桿鉆機(jī)的水平逐步提高,齒輪氣動(dòng)馬達(dá)式已基本能代替進(jìn)口產(chǎn)品,但玻璃鋼支腿等部分的可靠性應(yīng)進(jìn)一步提高;柱塞馬達(dá)式錨桿鉆機(jī)尚處于小批量生產(chǎn)階段,尚需進(jìn)一步考核; 液壓錨桿鉆機(jī)輸出的扭矩高于氣動(dòng)錨桿鉆機(jī),與掘進(jìn)機(jī)配套是較優(yōu)越的工作方式。但輸出扭矩仍然偏低,液壓系統(tǒng)容易發(fā)熱。由于以礦物油為工作介質(zhì),在煤礦井下使用中存在安全隱患。由于液壓錨桿鉆機(jī)具有扭矩大、鉆削破巖性好等特點(diǎn)，從而得到推廣應(yīng)用。
二 參考文獻(xiàn)
[1]劉忠，龍國(guó)鍵，褚福磊，楊國(guó)平.國(guó)內(nèi)外液壓沖擊機(jī)械的發(fā)展研究 .建筑機(jī)械
1993年第9期.
[2]高瀾慶.國(guó)外鑿巖(穿孔)設(shè)備的發(fā)展動(dòng)態(tài). 礦山機(jī)械.2000年第3期
[3]蔡玲，王慶堅(jiān).關(guān)于國(guó)內(nèi)鉆機(jī)結(jié)構(gòu)改進(jìn)方向初探. 廣東交通職業(yè)技術(shù)學(xué)院學(xué)報(bào)、第4卷 第3期2005年9月
[4]孫正心.對(duì)錨桿鉆機(jī)研制中幾個(gè)問題的探討. 煤炭科學(xué)技術(shù). 第27卷 第12期1999年12月
[5]劉道禮，孫菊花，丁福軍，顧兵.工程錨桿鉆機(jī)結(jié)構(gòu)的設(shè). 煤礦機(jī)電. 2003年第5期
[6]吳剛，杜長(zhǎng)龍.沖擊旋轉(zhuǎn)式錨桿鉆機(jī)設(shè)計(jì)研究. 煤炭技術(shù). 第20卷第9期2001年9月
[7]王吉安. 淺析錨桿鉆機(jī)的研制現(xiàn)狀. 煤礦機(jī)械.2004年第9期
[8]鄧樂，毋林. 煤礦錨桿鉆機(jī)的現(xiàn)狀與發(fā)展方向. 中州煤炭.1995年第期
[9]馮超旭. 機(jī)掘巷道錨桿支護(hù)技術(shù)現(xiàn)狀分析. 煤礦機(jī)械.2002年第5期
[10]徐成富. 掘進(jìn)機(jī)錨桿鉆機(jī)共泵液壓系統(tǒng)應(yīng)用. 煤礦機(jī)械.第27卷第8期2006年8月
[11]吉軍，原思聰，王發(fā)展. 基于遺傳算法的無(wú)法液壓沖擊旋轉(zhuǎn)型錨桿鉆機(jī)動(dòng)力頭優(yōu)化設(shè)計(jì). 煤礦機(jī)械.第27卷第11期2006年11月
[12]周明連，秦庚仁，朱家緯. 液壓錨桿鉆機(jī)設(shè)計(jì). 煤礦機(jī)械.第3卷第3期
[13]機(jī)械設(shè)計(jì)手冊(cè). 第4卷.機(jī)械工業(yè)出版社.
[14]張利平. 液壓傳動(dòng)系統(tǒng)及設(shè)計(jì). 化學(xué)工業(yè)出版社.
三 設(shè)計(jì)目的
隨著液壓鉆孔機(jī)械十幾年的發(fā)展與實(shí)踐，日益顯示了其優(yōu)越性，打破了長(zhǎng)期以來(lái)氣動(dòng)鉆機(jī)的統(tǒng)治地位。與氣動(dòng)鉆孔機(jī)械相比，液壓鉆機(jī)鉆孔速度提高兩倍以上，噪聲降低20－25dB，功率消耗降低1/3，消除了工作面的油霧和水汽。近年來(lái)國(guó)內(nèi)外液壓鉆孔機(jī)械的發(fā)展相當(dāng)迅速，品種(或型號(hào))不斷增加，更新?lián)Q代速度也很快。
隨著國(guó)民經(jīng)濟(jì)的高速發(fā)展，為滿足地質(zhì)災(zāi)害治理及各種基本建設(shè)的需要，特別是西部大開發(fā)的進(jìn)行，大型建筑、高速公路和地質(zhì)災(zāi)害治理工程的上馬，特別是三峽工程，小灣、龍灘水電工程等大型水力工程的進(jìn)行，對(duì)巖土錨固鉆機(jī)的需求量越來(lái)越大，同時(shí)對(duì)其性能的要求也越來(lái)越高。液壓鉆機(jī)由于其布置靈活，鉆進(jìn)參數(shù)調(diào)整簡(jiǎn)易，早已成為國(guó)外鉆機(jī)廠的主導(dǎo)產(chǎn)品。以往液壓錨桿鉆機(jī)，整個(gè)體積較大，分體性能不好，造價(jià)較高，特別是目前西部大開發(fā)建設(shè)中的幾處大型水電工程，其邊坡治理、巖土錨固都是在高邊坡上進(jìn)行的，有的搭架高達(dá)100m。為此，在以往液壓錨桿鉆機(jī)的基礎(chǔ)上，研制、開發(fā)MG100型液壓錨固鉆機(jī)。
四 設(shè)計(jì)要求與設(shè)計(jì)思路
1 設(shè)計(jì)要求：
錨桿鉆機(jī)的總體設(shè)計(jì)；
錨桿鉆機(jī)的液壓系統(tǒng)原理分析與設(shè)計(jì)；
錨桿鉆機(jī)的液壓系統(tǒng)的動(dòng)力特性分析；
錨桿鉆機(jī)的液壓系統(tǒng)的三維布管設(shè)計(jì)
2 設(shè)計(jì)思路：
本課題所涉及的錨桿鉆機(jī)液壓系統(tǒng)設(shè)計(jì)是液壓錨桿鉆機(jī)的重要組成部分，它意在研究液壓錨桿鉆機(jī)的液壓原理與輔助部分，總體方案包括主機(jī)和泵站的液壓部分及接頭與管路等。主機(jī)的液壓部分主要由液壓馬達(dá)、沖擊液缸、主臂液缸、回轉(zhuǎn)液缸及支腿液缸等組成，液壓泵站主要由液壓泵、溢流閥、油箱和濾油器等組成。液壓馬達(dá)、沖擊液缸和支腿作為鉆機(jī)的執(zhí)行元件,其中前兩個(gè)中一個(gè)作旋轉(zhuǎn)運(yùn)動(dòng),輸出扭矩;一個(gè)作直線運(yùn)動(dòng),起到?jīng)_擊碎石機(jī)加壓的功能，支腿也作直線運(yùn)動(dòng)，作為鉆機(jī)工作時(shí)的支撐。主臂液缸及回轉(zhuǎn)液缸起到確定鉆進(jìn)位置及固定鉆桿的功能，通過它們可以實(shí)現(xiàn)在固定鉆機(jī)底盤的情況下，方便的改變鉆進(jìn)位置。液壓泵站為液壓系統(tǒng)提供具有一定壓力的液壓油。通過對(duì)錨桿鉆機(jī)液壓系統(tǒng)設(shè)計(jì)，進(jìn)而更好的推進(jìn)液壓錨桿鉆機(jī)的推廣應(yīng)用。
五 預(yù)期成果
設(shè)計(jì)完成MG100型錨桿鉆機(jī)機(jī)器總體及液壓原理圖；鉆機(jī)中所應(yīng)用的液壓配件圖；MG100型錨桿鉆機(jī)的液壓裝配圖及機(jī)器立體圖；完成液壓配件的選型計(jì)算；完成設(shè)計(jì)說明書。
六 任務(wù)完成的階段內(nèi)容及時(shí)間安排
4月9日～4月21日 （第1－2周）錨桿鉆機(jī)總體設(shè)計(jì)；
4月22日～5月12日（第3－5周）錨桿鉆機(jī)的液壓系統(tǒng)原理分析與設(shè)計(jì)；
5月13日～6月2日（第6－8周）錨桿鉆機(jī)的液壓系統(tǒng)配件圖設(shè)計(jì)；
6月3日～6月16日（第9－10周）錨桿鉆機(jī)的液壓系統(tǒng)三維布管設(shè)計(jì)；
6月17日～6月30日（第11－12周）論文寫作與整理，準(zhǔn)備答辯。
七 完成設(shè)計(jì)所具備的條件因素
1.通過四年的本科學(xué)習(xí)已經(jīng)掌握了基礎(chǔ)和專業(yè)基礎(chǔ)知識(shí)，具有一 定的分析和解決問題的能力；
2.較熟練的掌握和運(yùn)用計(jì)算機(jī)操作系統(tǒng)以及相關(guān)軟件，并正在學(xué)習(xí)專業(yè)軟件;
3.可以運(yùn)用所學(xué)外語(yǔ)知識(shí)查閱外文資料；
4.熟練的運(yùn)用所學(xué)文獻(xiàn)檢索知識(shí)查閱有關(guān)專業(yè)資料；
5.通過分析討論對(duì)所設(shè)計(jì)的內(nèi)容有了全面了解。
指導(dǎo)教師簽名： 日期：
1、課題來(lái)源：課題來(lái)源分為結(jié)合實(shí)際課題和自擬課題兩種，結(jié)合實(shí)際課題中來(lái)源于科研課題的要填寫確切基金項(xiàng)目、企事業(yè)單位項(xiàng)目，不能寫橫向、縱向課題等。
2、課題類型：A—工程設(shè)計(jì)；B—科學(xué)實(shí)驗(yàn)；C—軟件開發(fā)；D—理論研究；E—應(yīng)用研究。
大慶石油學(xué)院本科生畢業(yè)設(shè)計(jì)（論文）
摘 要
隨著高、重、大建筑的增多，錨桿支護(hù)技術(shù)應(yīng)用越來(lái)越廣泛，隨之鉆鑿錨孔的錨桿鉆機(jī)也得到了快速發(fā)展。
本文針對(duì)現(xiàn)有錨桿鉆機(jī)存在的堅(jiān)硬夾層及堅(jiān)硬圍巖等的不適應(yīng)問題，在收集、查閱大量資料的基礎(chǔ)上，提出了沖擊旋轉(zhuǎn)式液壓錨桿鉆機(jī)方案,并對(duì)其進(jìn)行設(shè)計(jì)研究，因錨桿鉆機(jī)的機(jī)構(gòu)比較復(fù)雜，所以重點(diǎn)放在錨桿鉆機(jī)的液壓系統(tǒng)設(shè)計(jì)。首先，在對(duì)沖擊旋轉(zhuǎn)鉆孔破巖機(jī)理進(jìn)行分析的基礎(chǔ)上,結(jié)合沖擊旋轉(zhuǎn)式液壓錨桿鉆機(jī)的總體方案設(shè)計(jì)，制定出沖擊旋轉(zhuǎn)式液壓錨桿鉆機(jī)的液壓工作原理方案，并對(duì)組成液壓系統(tǒng)的各個(gè)子系統(tǒng)的原理和特點(diǎn)作了詳細(xì)的分析。在此基礎(chǔ)上，對(duì)錨桿鉆機(jī)的液壓動(dòng)力裝置和系統(tǒng)原理進(jìn)行了具體設(shè)計(jì)，通過計(jì)算選取了各主要元件，利用三維設(shè)計(jì)軟件進(jìn)行管路連接和系統(tǒng)布置。
關(guān)鍵詞：錨桿鉆機(jī)；液壓系統(tǒng)；回轉(zhuǎn)沖擊器
Abstract
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Key words:Anchor drilling；Hydraulic system；Rotatory impactor
大慶石油學(xué)院本科生畢業(yè)設(shè)計(jì)（論文）
目 錄
第1章 緒論…………………………………………………………………………1
1.1 選題的背景、意義及目的……………………………………………1
1.2 國(guó)內(nèi)外研究狀況及分析………………………………………………3
1.3 課題所涉及的內(nèi)容……………………………………………………7
1.4 本章小結(jié)………………………………………………………………7
第2章 錨桿鉆機(jī)的總體設(shè)計(jì)………………………………………………………8
2.1 底盤……………………………………………………………………8
2.2 傳動(dòng)方式………………………………………………………………8
2.3 鉆進(jìn)方式………………………………………………………………9
2.4 主臂……………………………………………………………………10
2.5 夾緊機(jī)構(gòu)………………………………………………………………10
2.6 裝卸鉆桿裝置…………………………………………………………11
2.7 本章小結(jié)………………………………………………………………12
第3章 鉆機(jī)液壓動(dòng)力裝置設(shè)計(jì)……………………………………………………14
3.1 傳動(dòng)設(shè)計(jì)………………………………………………………………14
3.2 液壓沖擊器設(shè)計(jì)………………………………………………………17
3.3 本章小結(jié)………………………………………………………………23
第4章 錨桿鉆機(jī)液壓系統(tǒng)設(shè)計(jì)分析………………………………………………24
4.1 總體液壓原理圖………………………………………………………24
4.2 原理圖的各部分原理分析……………………………………………25
4.3 本章小節(jié)………………………………………………………………28
第5章 液壓系統(tǒng)配件的計(jì)算與選取………………………………………………29
5.1 動(dòng)力頭加壓馬達(dá)………………………………………………………29
5.2 主臂伸縮油缸…………………………………………………………29
5.3 裝卸鉆桿油缸…………………………………………………………30
5.4 變幅油缸………………………………………………………………31
5.5 變角油缸………………………………………………………………32
5.6 支腿油缸………………………………………………………………32
5.7 泵的選取………………………………………………………………33
5.8 本章小結(jié)………………………………………………………………34
第6章 整機(jī)穩(wěn)定性分……………………………………………………………35
6.1 質(zhì)量參數(shù)………………………………………………………………35
6.2 穩(wěn)定性計(jì)算……………………………………………………………36
6.3 本章小結(jié)………………………………………………………………38
結(jié)論 …………………………………………………………………………………49
參考文獻(xiàn) ……………………………………………………………………………40
致謝 …………………………………………………………………………………41
II
大慶石油學(xué)院2007屆本科畢業(yè)設(shè)計(jì)MG100型錨桿鉆機(jī)液壓系統(tǒng)設(shè)計(jì) 學(xué)生姓名：刁玉才 指導(dǎo)教師：趙偉民教授 課題來(lái)源：北京建筑機(jī)械化研究院概況鉆孔機(jī)械是地下水開采及 基本建設(shè)基礎(chǔ)施工必不可少的設(shè)備，隨著錨桿支護(hù)技術(shù)的飛速發(fā)展，用于鉆鑿錨桿孔的錨桿鉆機(jī)也得到了快速發(fā)展。目前，錨桿鉆機(jī)主要有電動(dòng)、氣動(dòng)、液動(dòng)三種形式。國(guó)內(nèi)外錨桿鉆機(jī)的研制現(xiàn)狀 目前國(guó)外應(yīng)用較為普遍的錨桿鉆機(jī)主要有風(fēng)動(dòng)和目前國(guó)外應(yīng)用較為普遍的錨桿鉆機(jī)主要有風(fēng)動(dòng)和液壓錨桿鉆機(jī)兩種，風(fēng)動(dòng)錨桿鉆機(jī)有澳大利亞的克萊液壓錨桿鉆機(jī)兩種，風(fēng)動(dòng)錨桿鉆機(jī)有澳大利亞的克萊姆公司姆公司W(wǎng)OMBATWOMBAT型型,瑞典瑞典PRB-300PRB-300型等；液壓錨桿鉆機(jī)型等；液壓錨桿鉆機(jī)有英國(guó)有英國(guó)WISPWISP型，澳大利亞型，澳大利亞PROBAMPROBAM型等型等 。特別是澳利。特別是澳利亞在風(fēng)動(dòng)錨桿鉆機(jī)方面一直保持著較為領(lǐng)先的技術(shù)和亞在風(fēng)動(dòng)錨桿鉆機(jī)方面一直保持著較為領(lǐng)先的技術(shù)和產(chǎn)品。產(chǎn)品。我國(guó)錨桿鉆機(jī)的研究始于我國(guó)錨桿鉆機(jī)的研究始于2020世紀(jì)世紀(jì)7070年代末，先后年代末，先后研制過機(jī)械支腿式錨桿鉆機(jī)，鉆車式錨桿鉆機(jī)研制過機(jī)械支腿式錨桿鉆機(jī)，鉆車式錨桿鉆機(jī),支腿支腿與導(dǎo)軌式液壓錨桿鉆機(jī)，支腿式氣動(dòng)錨桿鉆機(jī)與導(dǎo)軌式液壓錨桿鉆機(jī)，支腿式氣動(dòng)錨桿鉆機(jī),非機(jī)非機(jī)械傳動(dòng)電動(dòng)錨桿鉆機(jī)，機(jī)載式錨桿鉆機(jī)等錨桿鉆機(jī)。械傳動(dòng)電動(dòng)錨桿鉆機(jī)，機(jī)載式錨桿鉆機(jī)等錨桿鉆機(jī)。到現(xiàn)在已經(jīng)有風(fēng)動(dòng)、電動(dòng)、液動(dòng)三大系列到現(xiàn)在已經(jīng)有風(fēng)動(dòng)、電動(dòng)、液動(dòng)三大系列3030多個(gè)品種。多個(gè)品種。鉆機(jī)的技術(shù)參數(shù)：鉆孔直徑鉆孔直徑 100200 mm；鉆頭轉(zhuǎn)速鉆頭轉(zhuǎn)速 080r/min；鉆頭扭矩鉆頭扭矩 900Nm；鉆頭行程鉆頭行程 20002500 mm；推力推力 5060 kN；沖擊頻率沖擊頻率 20002200次次/min；系統(tǒng)壓力系統(tǒng)壓力 25MPa；發(fā)動(dòng)機(jī)發(fā)動(dòng)機(jī) 100kW；行走方式行走方式 履帶式；履帶式；重量重量 1200014000 kg 本課題所涉及的內(nèi)容通過對(duì)上述三種錨桿鉆機(jī)的特性分析，對(duì)比三種通過對(duì)上述三種錨桿鉆機(jī)的特性分析，對(duì)比三種錨桿鉆機(jī)的特點(diǎn)與性能，液壓錨桿鉆機(jī)由于有中、錨桿鉆機(jī)的特點(diǎn)與性能，液壓錨桿鉆機(jī)由于有中、高壓液壓泵站的支持，扭矩的增大有更大的空間，高壓液壓泵站的支持，扭矩的增大有更大的空間，因而液壓錨桿鉆機(jī)的應(yīng)用將越來(lái)越廣。所以選取因而液壓錨桿鉆機(jī)的應(yīng)用將越來(lái)越廣。所以選取液壓錨桿鉆機(jī)。本文通過對(duì)錨桿鉆機(jī)液壓系統(tǒng)設(shè)液壓錨桿鉆機(jī)。本文通過對(duì)錨桿鉆機(jī)液壓系統(tǒng)設(shè)計(jì)，進(jìn)而更好的推進(jìn)液壓錨桿鉆機(jī)的推廣應(yīng)用。計(jì)，進(jìn)而更好的推進(jìn)液壓錨桿鉆機(jī)的推廣應(yīng)用。所涉及的主要內(nèi)容有：鉆機(jī)的總體設(shè)計(jì)；液壓系所涉及的主要內(nèi)容有：鉆機(jī)的總體設(shè)計(jì)；液壓系統(tǒng)原理分析與設(shè)計(jì)；液壓系統(tǒng)的動(dòng)力特性分析；統(tǒng)原理分析與設(shè)計(jì)；液壓系統(tǒng)的動(dòng)力特性分析；液壓系統(tǒng)的三維布管設(shè)計(jì)以及相關(guān)論文的撰寫。液壓系統(tǒng)的三維布管設(shè)計(jì)以及相關(guān)論文的撰寫。鉆進(jìn)總體設(shè)計(jì)底盤：由于鉆機(jī)要適用于野外底盤：由于鉆機(jī)要適用于野外及比較泥濘的巷道作業(yè)，所及比較泥濘的巷道作業(yè)，所以選用履帶形底盤。以選用履帶形底盤。鉆進(jìn)方式：錨桿鉆機(jī)的鉆方式鉆進(jìn)方式：錨桿鉆機(jī)的鉆方式主要有旋轉(zhuǎn)式、沖擊式和沖主要有旋轉(zhuǎn)式、沖擊式和沖擊旋轉(zhuǎn)式為了能夠適應(yīng)在堅(jiān)擊旋轉(zhuǎn)式為了能夠適應(yīng)在堅(jiān)硬巖石層鉆進(jìn)，選用沖擊旋硬巖石層鉆進(jìn)，選用沖擊旋轉(zhuǎn)的鉆進(jìn)方式，右圖為三種轉(zhuǎn)的鉆進(jìn)方式，右圖為三種沖擊旋轉(zhuǎn)形式。沖擊旋轉(zhuǎn)形式。換鉆桿裝置：為了能夠?qū)崿F(xiàn)自動(dòng)換換鉆桿，參考美國(guó)阿換鉆桿裝置：為了能夠?qū)崿F(xiàn)自動(dòng)換換鉆桿，參考美國(guó)阿特拉斯公司的錨桿鉆機(jī)所用的換鉆裝置進(jìn)行設(shè)計(jì)，該特拉斯公司的錨桿鉆機(jī)所用的換鉆裝置進(jìn)行設(shè)計(jì)，該裝置類似于彈夾式，也是通過它的整體旋轉(zhuǎn)將鉆桿送裝置類似于彈夾式，也是通過它的整體旋轉(zhuǎn)將鉆桿送到指定位置來(lái)實(shí)現(xiàn)換鉆桿的。它的整體旋轉(zhuǎn)采用棘輪、到指定位置來(lái)實(shí)現(xiàn)換鉆桿的。它的整體旋轉(zhuǎn)采用棘輪、棘爪嚙合方式，通過油缸活塞帶動(dòng)棘爪移動(dòng)來(lái)推棘爪嚙合方式，通過油缸活塞帶動(dòng)棘爪移動(dòng)來(lái)推動(dòng)棘輪旋轉(zhuǎn)，從實(shí)現(xiàn)其動(dòng)棘輪旋轉(zhuǎn)，從實(shí)現(xiàn)其整體旋轉(zhuǎn)，將鉆桿送到整體旋轉(zhuǎn)，將鉆桿送到指定位置。利用棘輪、指定位置。利用棘輪、棘爪嚙合的方式，可以棘爪嚙合的方式，可以實(shí)現(xiàn)棘輪的定角度轉(zhuǎn)動(dòng)實(shí)現(xiàn)棘輪的定角度轉(zhuǎn)動(dòng)使鉆桿的送進(jìn)精度更高使鉆桿的送進(jìn)精度更高主臂：主臂多采用箱形結(jié)構(gòu)，分為整體式和可伸主臂：主臂多采用箱形結(jié)構(gòu)，分為整體式和可伸縮式兩種，整體式載荷分布均勻，能夠承受較縮式兩種，整體式載荷分布均勻，能夠承受較大的載荷，但當(dāng)?shù)妆P固定時(shí)鉆機(jī)的作業(yè)范圍?。淮蟮妮d荷，但當(dāng)?shù)妆P固定時(shí)鉆機(jī)的作業(yè)范圍小；可伸縮式雖然承受載荷能力沒有整體式好，但可伸縮式雖然承受載荷能力沒有整體式好，但底盤固定時(shí)鉆機(jī)的作業(yè)范圍大，能夠適應(yīng)多種底盤固定時(shí)鉆機(jī)的作業(yè)范圍大，能夠適應(yīng)多種工況要求，因此選用可伸縮式主臂。工況要求，因此選用可伸縮式主臂。夾緊機(jī)構(gòu)：因?yàn)殂@機(jī)的鉆夾緊機(jī)構(gòu)：因?yàn)殂@機(jī)的鉆孔直徑為孔直徑為100-200mm，為了能夠?qū)崿F(xiàn)對(duì)不同直為了能夠?qū)崿F(xiàn)對(duì)不同直徑鉆柱的夾緊，選用如徑鉆柱的夾緊，選用如右圖所示的夾緊機(jī)構(gòu)右圖所示的夾緊機(jī)構(gòu)。液壓動(dòng)力裝置設(shè)計(jì)傳動(dòng)設(shè)計(jì)傳動(dòng)設(shè)計(jì) 錨桿鉆機(jī)的動(dòng)力裝置采用液壓傳動(dòng)，動(dòng)力是由液壓馬錨桿鉆機(jī)的動(dòng)力裝置采用液壓傳動(dòng)，動(dòng)力是由液壓馬達(dá)傳出通過齒輪傳動(dòng)到鉆柱上，最終實(shí)現(xiàn)鉆進(jìn)。鉆進(jìn)達(dá)傳出通過齒輪傳動(dòng)到鉆柱上，最終實(shí)現(xiàn)鉆進(jìn)。鉆進(jìn)方式采用沖擊旋轉(zhuǎn)式，它的工作原理為：由液壓馬達(dá)方式采用沖擊旋轉(zhuǎn)式，它的工作原理為：由液壓馬達(dá)馬達(dá)驅(qū)動(dòng)內(nèi)外層鉆柱旋轉(zhuǎn)鉆進(jìn)，由高頻沖擊油缸驅(qū)動(dòng)馬達(dá)驅(qū)動(dòng)內(nèi)外層鉆柱旋轉(zhuǎn)鉆進(jìn)，由高頻沖擊油缸驅(qū)動(dòng)內(nèi)層鉆柱振動(dòng)，產(chǎn)生沿鉆進(jìn)方向沖擊力，使巖石產(chǎn)生內(nèi)層鉆柱振動(dòng)，產(chǎn)生沿鉆進(jìn)方向沖擊力，使巖石產(chǎn)生裂紋甚至破碎，從而實(shí)現(xiàn)沖擊碎巖的作用。這樣就易裂紋甚至破碎，從而實(shí)現(xiàn)沖擊碎巖的作用。這樣就易于內(nèi)外層鉆桿旋轉(zhuǎn)切屑巖石，從而實(shí)現(xiàn)有效地鉆進(jìn)。于內(nèi)外層鉆桿旋轉(zhuǎn)切屑巖石，從而實(shí)現(xiàn)有效地鉆進(jìn)。液壓沖擊器上圖為沖擊器的運(yùn)動(dòng)簡(jiǎn)圖，利用簡(jiǎn)單的力學(xué)方程即上圖為沖擊器的運(yùn)動(dòng)簡(jiǎn)圖，利用簡(jiǎn)單的力學(xué)方程即Fw=A(P1-P2)，初算液壓沖擊器活塞及活塞桿的直徑，初算液壓沖擊器活塞及活塞桿的直徑為為d=50mm，D=86mm。近似看作活塞在沖擊過程中。近似看作活塞在沖擊過程中為勻加速運(yùn)動(dòng)，沖程為勻加速運(yùn)動(dòng)，沖程s=10mm，沖擊頻率為，沖擊頻率為20002200次次/分。分。進(jìn)一步計(jì)算得出：進(jìn)一步計(jì)算得出：流量流量q=2.824L/s；儲(chǔ)油量?jī)?chǔ)油量 V=0.78L。液壓原理設(shè)計(jì)分析總體液壓原理圖總體液壓原理圖下圖為車體內(nèi)部布線圖原理的各部分分析一、動(dòng)力頭驅(qū)動(dòng)馬達(dá)一、動(dòng)力頭驅(qū)動(dòng)馬達(dá)如圖，由平衡閥、變量馬達(dá)和液壓減速機(jī)組如圖，由平衡閥、變量馬達(dá)和液壓減速機(jī)組成。油口成。油口P1和和P2與主油路換向閥相接，油口與主油路換向閥相接，油口S與油箱連接。其中與油箱連接。其中,平衡閥主要起到過載保護(hù)平衡閥主要起到過載保護(hù)的作用；馬達(dá)轉(zhuǎn)速可以通過減速機(jī)內(nèi)部控制，的作用；馬達(dá)轉(zhuǎn)速可以通過減速機(jī)內(nèi)部控制，也可以通過人為強(qiáng)制，其型號(hào)為依頓盤配流也可以通過人為強(qiáng)制，其型號(hào)為依頓盤配流4000系列馬達(dá)。系列馬達(dá)。加壓馬達(dá)該馬達(dá)主要應(yīng)實(shí)現(xiàn)，在鉆進(jìn)過程該馬達(dá)主要應(yīng)實(shí)現(xiàn)，在鉆進(jìn)過程中對(duì)動(dòng)力頭加壓和在換鉆桿過程中對(duì)動(dòng)力頭加壓和在換鉆桿過程中提升動(dòng)力頭，因此它應(yīng)具有自中提升動(dòng)力頭，因此它應(yīng)具有自動(dòng)鎖緊功能，該功能是通過進(jìn)油動(dòng)鎖緊功能，該功能是通過進(jìn)油控制一個(gè)單作用油缸來(lái)實(shí)現(xiàn)的?？刂埔粋€(gè)單作用油缸來(lái)實(shí)現(xiàn)的。高壓油在流入馬達(dá)之前分流，一高壓油在流入馬達(dá)之前分流，一路流入馬達(dá)，另一路通過梭閥油路流入馬達(dá)，另一路通過梭閥油缸，馬達(dá)工作時(shí)，油缸活塞縮回，缸，馬達(dá)工作時(shí)，油缸活塞縮回，解除自鎖；否則，活塞在彈簧作解除自鎖；否則，活塞在彈簧作用下伸出，實(shí)現(xiàn)自鎖，為了施工用下伸出，實(shí)現(xiàn)自鎖，為了施工過程中的安全，在油路中安裝平衡閥過程中的安全，在油路中安裝平衡閥。雙作用平衡閥在液壓系統(tǒng)中多處都用到了平在液壓系統(tǒng)中多處都用到了平衡閥，圖示為它的原理圖，圖衡閥，圖示為它的原理圖，圖中中P和和T為平衡閥的進(jìn)口；為平衡閥的進(jìn)口；A和和B為平衡閥的出口為平衡閥的出口。主要起到。主要起到液壓鎖和過載保護(hù)的功能。液液壓鎖和過載保護(hù)的功能。液壓鎖功能：當(dāng)系統(tǒng)停止對(duì)壓鎖功能：當(dāng)系統(tǒng)停止對(duì)P、T口供油時(shí)，在單向閥的作用下，口供油時(shí)，在單向閥的作用下，油液不能流回，即起到油液不能流回，即起到 液壓鎖液壓鎖緊的功能；緊的功能；過載保護(hù)功能過載保護(hù)功能;當(dāng)外當(dāng)外力過大或急劇變化使得力過大或急劇變化使得A、B口口壓力大于溢流閥調(diào)定壓力時(shí)，壓力大于溢流閥調(diào)定壓力時(shí)，溢流閥溢流，即起到過載保護(hù)溢流閥溢流，即起到過載保護(hù)的功能。的功能。支腿多路閥如圖，該部分的換向閥采用力士樂公司的差裝如圖，該部分的換向閥采用力士樂公司的差裝多路閥，插裝三位五通電磁換向閥，能夠?qū)崿F(xiàn)多路閥，插裝三位五通電磁換向閥，能夠?qū)崿F(xiàn)自動(dòng)泄油功能，液壓油通過自動(dòng)泄油功能，液壓油通過P 口流入多路閥，口流入多路閥，在閥塊中各電磁閥均處于中位時(shí)，油液通過兩在閥塊中各電磁閥均處于中位時(shí)，油液通過兩位兩通電磁換向閥的上位即通路經(jīng)位兩通電磁換向閥的上位即通路經(jīng)T口返回油箱；口返回油箱；當(dāng)電磁換向閥的上位或下位工作時(shí)進(jìn)油路的一當(dāng)電磁換向閥的上位或下位工作時(shí)進(jìn)油路的一部分液壓油通過梭閥作用于兩位兩通換向閥，部分液壓油通過梭閥作用于兩位兩通換向閥，使其下位工作，即自動(dòng)泄油回路斷開，保證該使其下位工作，即自動(dòng)泄油回路斷開，保證該部分液壓系統(tǒng)的正常工作，圖中的兩個(gè)溢流閥部分液壓系統(tǒng)的正常工作，圖中的兩個(gè)溢流閥均起到過載保護(hù)的功能。均起到過載保護(hù)的功能。結(jié)論本文通過對(duì)錨桿鉆機(jī)國(guó)內(nèi)外發(fā)展?fàn)顩r的分析，了解本文通過對(duì)錨桿鉆機(jī)國(guó)內(nèi)外發(fā)展?fàn)顩r的分析，了解了目前錨桿鉆機(jī)的主要分類，在對(duì)其優(yōu)缺點(diǎn)進(jìn)行分了目前錨桿鉆機(jī)的主要分類，在對(duì)其優(yōu)缺點(diǎn)進(jìn)行分析對(duì)比的基礎(chǔ)上，選取液壓錨桿鉆機(jī)進(jìn)行設(shè)計(jì)。析對(duì)比的基礎(chǔ)上，選取液壓錨桿鉆機(jī)進(jìn)行設(shè)計(jì)。在鉆機(jī)總體方案的確定中，通過方案對(duì)比的方式分在鉆機(jī)總體方案的確定中，通過方案對(duì)比的方式分別對(duì)鉆機(jī)的履帶、傳動(dòng)方式、鉆進(jìn)方式、主臂和夾別對(duì)鉆機(jī)的履帶、傳動(dòng)方式、鉆進(jìn)方式、主臂和夾緊機(jī)構(gòu)進(jìn)行了選型及設(shè)計(jì)。緊機(jī)構(gòu)進(jìn)行了選型及設(shè)計(jì)。在液壓動(dòng)力裝置的分析與設(shè)計(jì)中，了解了液壓振動(dòng)在液壓動(dòng)力裝置的分析與設(shè)計(jì)中，了解了液壓振動(dòng)沖擊器的形式及其工作原理，對(duì)比選取配流式液壓沖擊器的形式及其工作原理，對(duì)比選取配流式液壓沖擊器。并且對(duì)主要參數(shù)進(jìn)行計(jì)算。沖擊器。并且對(duì)主要參數(shù)進(jìn)行計(jì)算。在液壓原理部分中，通過對(duì)錨桿鉆機(jī)液壓原理圖的在液壓原理部分中，通過對(duì)錨桿鉆機(jī)液壓原理圖的分析，介紹了鉆機(jī)液壓系統(tǒng)的主要執(zhí)行元件及其輔分析，介紹了鉆機(jī)液壓系統(tǒng)的主要執(zhí)行元件及其輔助元件，并對(duì)原理圖中的各部分進(jìn)行了設(shè)計(jì)分析。助元件，并對(duì)原理圖中的各部分進(jìn)行了設(shè)計(jì)分析。在液壓系統(tǒng)中主要元件的選取上，通過相關(guān)手冊(cè)的在液壓系統(tǒng)中主要元件的選取上，通過相關(guān)手冊(cè)的公式進(jìn)行計(jì)算，并在力士樂、林德等公司的樣本及公式進(jìn)行計(jì)算，并在力士樂、林德等公司的樣本及手冊(cè)中進(jìn)行選取。手冊(cè)中進(jìn)行選取。最后通過計(jì)算、對(duì)比整機(jī)的傾翻力矩與反傾翻力矩最后通過計(jì)算、對(duì)比整機(jī)的傾翻力矩與反傾翻力矩進(jìn)行整機(jī)穩(wěn)定性分析。進(jìn)行整機(jī)穩(wěn)定性分析。歡迎各位老師提出寶貴意見!大慶石油學(xué)院本科生畢業(yè)設(shè)計(jì)（論文）
Anchor drilling
Document Type and Number:
United States Patent 4201270
Abstract:
An operator controlled roof bolter with a flexible shaft drill and a roof bolt inserter for drilling and inserting a roof bolt into an unsupported roof of a mine while the operator is positioned at an outby station under a supported roof. The flexible shaft roof drill is constrained to a frame of the roof bolter for pivoting movement between a rest position and a working position. The roof bolt inserter is mounted on a slide for linear movement and limited rotational movement between a retracted position and an extended position for positioning a roof bolt held by the inserter into registration with a hole drilled by the roof drill.
Inventors:
Ribich, William A. (Lexington, MA, US)
Hug, Hans A. (Weston, MA, US)
Bellows, Alfred H. (Belmont, MA, US)
Application Number:
906237
Filing Date: 05/15/1978
Publication Date: 05/06/1980
Primary Class: 173/193
Other Classes: 81/57.25, 81/57.41, 173/46, 173/52, 405/259.1, 405/303.
BACKGROUND OF THE INVENTION
1. Field of the Invention
The present invention relates to the supporting of underground mine roofs and, more particularly, is directed towards an apparatus for drilling holes in the roof of a mine and for inserting roof bolts into such holes.
2. Description of the Prior Art
In underground mines, the roof is supported by roof bolts which are inserted into holes drilled into the roof strata. An apparatus for drilling holes having a depth substantially greater than the height of the mine passageway in which the apparatus is located is described in U.S. Pat. No. 4,057,115. An apparatus for inserting roof bolts into the drilled holes is described in U.S. Pat. No. 4,003,233.
Although progress has been made in roof bolting apparatus, roof bolting remains one of the most hazardous mining occupations for several reasons. The operator inserting the roof bolt is stationed inby at an area in which the roof is unsupported. It is the operator's task to drill and to insert roof bolts in this unsupported area. Consequently, the operator is exposed to the hazard of having sections of the unsupported roof fall on him. Mine personnel have been injured by flying objects from the exposed rotating drill steel and tools employed to tighten the roof bolts. Workers are also exposed to the risk of being caught on and pulled into the rotating portions of the mining apparatus.
Attempts to develop roof bolters which are capable of remotely installing bolts have been met with limited success even for the simplest case when the bolts are shorter than the height of the mine passageway. Such attempts have resulted in complex and costly systems which suffer from low reliability due to many moving parts and continual readjustment. A need has arisen for an improved roof bolting system which does not suffer from the heretofore mentioned disadvantages.
What is claimed is:
1. An operator controlled roof bolting system for drilling holes in the roof strata of a mine and for inserting roof bolts into the drilled holes while the operator is in a safe area, said system comprising:
(a) a frame with an outby operator's station;
(b) roof drill means for drilling a hole in the roof strata, said roof drill means mounted to said frame for pivotal movement about an axis between a rest position and a working position;
(c) first means operatively connected to said roof drill means and said frame for pivotally moving said roof drill means about said axis between said rest position and said working position:
(d) roof bolt inserter means for inserting a roof bolt into a hole drilled in the roof strata by said roof drill means, said roof bolt inserter means mounted to said frame for movement between a retracted position and an extended position, said roof bolt inserter means including slide means mounted to said frame for pivoting movement about said axis; and
(e) second means operatively connected to said roof bolt inserter means and said frame for moving said roof bolt inserter means between said retracted position and said extended position, said roof bolt inserter means proximate to said operator's station when in said retracted position, whereby the operator can place a roof bolt in said roof bolt inserter means while remaining at said operator's station.
2. The system as claimed in claim 1 wherein said roof drill means is a flexible shaft roof drill.
3. The system as claimed in claim 1, wherein said roof drill means is a longer-than-seam height drill.
4. The system as claimed in claim 1 wherein said roof bolt inserter means includes a working head mounted to said slide means, said slide means pivotally mounted to said frame, third means operatively connected to said slide means and said frame for pivotally moving said slide means about said axis.
5. The system as claimed in claim 1, including a plate for pushing a roof bolt inserted into the drilled hole and plate means for moving said plate into engagement with the roof bolt, said plate means connected to said frame and said plate.
6. An operator controlled roof bolting system for drilling holes in the roof strata of a mine and for installing roof bolts into the drilled holes while the operator is in a safe or supported area, said system comprising: (a) a frame;
(b) roof drill means for drilling a hole in the roof strata, said roof drill means configured to drill a hole having a depth which is greater than the height of the mine, said roof drill means mounted to said frame for pivoting movement about an axis between a rest position and a working position;
(c) first actuator means operatively connected to said roof drill means and said frame for pivotally moving said roof drill means about said axis;
(d) roof bolt inserter means for inserting a roof bolt into a hole drilled in the roof strata by said roof drill means, said roof bolt inserter means including slide means and a working head, said slide means mounted to said frame for pivoting movement about said axis, said slide means linearly movable between a retracted position and an extended position, said working head carried by said slide means and linearly movable between said retracted position and said extended position, said working head configured to insert a roof bolt having a length which is no longer than the height of the mine into a hole drilled by said roof drill means, said drill means and said roof bolt inserter means independently movable about said axis;
(e) second actuator means operatively connected to said slide means for linearly moving said slide means between said retracted position and said extended position;
(f) third actuator means operatively connected to said slide means and said frame for pivotally moving said working head about said axis;
(g) said roof bolt inserter proximate to said operator's station when in said retracted position, whereby the operator can place a roof bolt in said roof bolt inserter while remaining at said operator's station.
7. The system as claimed in claim 6 wherein said roof drill means includes a drill and an arm, said drill carried by said arm, fourth actuator means operatively connected to said drill and said arm for moving said drill relative to said arm, said drill constrained for substantially vertical movement relative to said arm, said arm pivotally mounted to said frame for movement about said axis.
8. The system as claimed in claim 7 including torquer means mounted to said working head, said torquer means configured to engage the inserted roof bolt and to tighten the roof bolt to a perdetermined torque.
9. An operator controlled roof bolting system for drilling holes in the roof strata of a mine and for inserting roof bolts into the drilled holes while the operator is in a safe area, said system comprising:
(a) a frame with an outby operator's station;
(b) roof drill means for drilling a hole in the roof strata, said roof drill means pivotally mounted to said frame for pivotal movement about a first axis between a rest position and a working position;
(c) first means operatively connected to said roof drill means and said frame for pivotally moving said roof drill means about said first axis between said rest position and said working position;
(d) roof bolt inserter means for inserting a roof bolt into a hole drilled in the roof strata by said roof drill means, said roof bolt inserter means slidably mounted to said frame for slidable movement between a retracted position and an extended position; said roof bolt inserter means including a working head and slide means, said slide means pivotally mounted to said frame;
(e) second means operatively connected to said roof bolt inserter means and said frame for slidably moving said roof bolt inserter means between said retracted position and said extended position; and
(f) third means operatively connected to said slide means and said frame for pivotally moving said slide means about said first axis;
(g) said roof bolt inserter means proximate to said operator's station when in said retracted position, whereby the operator can place a roof bolt in said roof bolt inserter means while remaining at said operator's station.
10. An operator controlled roof bolting system for drilling holes in the roof strata of a mine and for inserting roof bolts into the drilled holes while the operator is in a safe area, said system comprising:
(a) a frame with an outby operator'station;
(b) a flexible shaft roof drill for drilling a hole in the roof strata, said roof drill mounted to said frame for movement between a rest position and a working position;
(c) first means operatively connected to said roof drill and said frame for moving said roof drill between said rest position and said working position;
(d) roof bolt inserter means for inserting a roof bolt into a hole drilled in the roof strata by said roof drill, said roof bolt inserter means mounted to said frame for movement between a retracted position and an extended position;
(e) second means operatively connected to said roof bolt inserter means and said frame for moving said roof bolt inserter means between said retracted position and said extended position, said roof bolt inserter means proximate to said operator's station when in said retracted position, whereby the operator can place a roof bolt in said roof bolt inserter means while remaining at said operator's station;
(f) third means mounted to said frame; and
(g) a plate mounted to said third means, said plate configured to push a roof bolt inserted into the drilled hole, said third means moving said plate into engagement with the roof bolt.
SUMMARY OF THE INVENTION
It is an object of the present invention to provide a roof bolting system which does not suffer from the heretofore mentioned disadvantages and limitations. A further object of the invention is to provide a simple and reliable roof bolting system for remote drilling and insertion of roof bolts, particularly bolts that are longer than the height of the mine passage.
Another object of the invention is to provide a simple and reliable roof bolting system with an outby operator's station for remote drilling and insertion of roof bolts in which an inserter is moved rearwardly towards an operator for reception of the bolt rather than having the bolt fed forwardly to the inserter from the operator. Such a system includes a rugged mechanism for moving the inserter which is simpler and more reliable than bolt feed systems.
Yet another object of the invention is to provide an operator controlled roof bolter with a flexible shaft roof drill or other longer than seam height drill and a roof bolt inserter for drilling and inserting a roof bolt into an unsupported roof of a mine while the operator is outby and is positioned under a supported roof. The flexible shaft roof drill is mounted to a frame of the roof bolter and is constrained for pivoted movement between a rest position and a working position. The roof bolt inserter is configured to bend and feed roof bolts having a length that is greater than the height of the mine passageway. A head of the roof bolt inserter is mounted on a slide for linear movement and limited rotational movement between a retracted position and an extended position in order to align the advancing roof bolt with a hole drilled in the roof strata of the mine by the flexible shaft roof drill. In the retracted position, the inserter is in place to receive a roof bolt from an operator without requiring the operator to leave a supported or safe area. The hole is drilled when the roof drill is in its working position. Upon completion of the drilling step, the roof drill is pivoted to its rest position and the roof bolter inserter is moved to its extended position. A controller is provided for aligning the roof bolt and the drilled hole. A hydraulically actuated plate pushes the inserted roof bolt further into the drilled hole. A torquer engages the inserted roof bolt and tightens the roof bolt to effect the roof support.
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