縱軸式掘進(jìn)機(jī)

論文編號(hào):JX1528  論文字?jǐn)?shù):19950.頁(yè)數(shù):63

摘  要
 隨著掘進(jìn)機(jī)在煤礦中使用數(shù)量的增多，它的工作性能也得到了更多關(guān)注。穩(wěn)定性是評(píng)價(jià)掘進(jìn)機(jī)工作性能的一項(xiàng)重要指標(biāo)，因此對(duì)它的研究很有意義。
 本文首先根據(jù)縱軸式掘進(jìn)機(jī)整機(jī)受力分析，建立了掘進(jìn)機(jī)穩(wěn)定性分析模型，根據(jù)掘進(jìn)機(jī)截割頭載荷的計(jì)算和掘進(jìn)機(jī)穩(wěn)定性模型，利用編寫(xiě)的MATLAB程序分析了縱軸式掘進(jìn)機(jī)工作的穩(wěn)定性以及掘進(jìn)機(jī)在幾個(gè)極端位置的工作穩(wěn)定性情況；根據(jù)建立的穩(wěn)定性模型中設(shè)置的偏載，可以模擬出掘進(jìn)機(jī)重心位置變化對(duì)掘進(jìn)機(jī)工作穩(wěn)定性的影響。其次，研究了掘進(jìn)機(jī)截割頭的結(jié)構(gòu)與參數(shù)變化對(duì)掘進(jìn)機(jī)工作穩(wěn)定性的影響。最后通過(guò)粒子群算法理論和MATLAB程序?qū)�掘進(jìn)機(jī)的運(yùn)動(dòng)參數(shù)進(jìn)行了優(yōu)化，使得掘進(jìn)機(jī)的工作穩(wěn)定性更高。
 
關(guān)鍵詞：縱軸式掘進(jìn)機(jī)；穩(wěn)定性；重心；截割頭；粒子群算法理論

Abstract
 More roadheader has being used in coal mine ,more attention has being attracted to the work capability of roadheader. One of the important factors of roadheader work performance eva luation is stability, and it is valuable to do research on stability.
 This paper first sets up a model of roadheader stability according to the stress analysis of the whole longitudinal roadheader. MATLAB programme was used to analyze longitudinal roadheader working stability and stability of several extreme positions which is based on the calculated load of cutting head and the roadheader stability model . We can simulate the  influence to roadheader stability aroused by the change of roadheader gravity center positions according to the deflexion load which is set in the established model. In the next place, we have studied the influence to roadheader stability arosed by the different structures and parameters of cutting head. At last, we have optimized the movement parameters of  roaderheader by  Partical Swarm Optimization theory and MATLAB programme which conduces a better stability to roadheader.

Key words：longitudinal roadheader；stability；gravity center；cutting head；  Partical Swarm Optimization theory

目 錄
1 引言……………………………………………………………………………1
1.1 部分?jǐn)嗝婢蜻M(jìn)機(jī)國(guó)內(nèi)外現(xiàn)狀………………………………………………1
1.2 選題的意義…………………………………………………………………2
1.3 選題的目的…………………………………………………………………3
1.4 課題的內(nèi)容…………………………………………………………………3
2 縱軸式掘進(jìn)機(jī)的結(jié)構(gòu)及工作特點(diǎn)……………………………………………5
2.1掘進(jìn)機(jī)的結(jié)構(gòu)………………………………………………………………5
2.2 掘進(jìn)機(jī)的工作情況…………………………………………………………6
2.3 掘進(jìn)機(jī)穩(wěn)定性模型的建立…………………………………………………6
2.4 掘進(jìn)機(jī)截割頭轉(zhuǎn)角和懸臂擺角與時(shí)間的關(guān)系……………………………9
2.5 本章小結(jié)……………………………………………………………………9
3 縱軸式掘進(jìn)機(jī)工作過(guò)程的穩(wěn)定性分析………………………………………10
3.1 掘進(jìn)機(jī)截割頭載荷的計(jì)算…………………………………………………10
3.1.1 截齒受力的經(jīng)驗(yàn)計(jì)算公式………………………………………………10
3.1.2 截割頭載荷的分析……………………………………………………11
3.2 縱軸式掘進(jìn)機(jī)工作過(guò)程穩(wěn)定性的計(jì)算機(jī)模擬…………………………14
3.2.1 模擬工具………………………………………………………………14
3.2.2 模擬過(guò)程及結(jié)果………………………………………………………16
3.2.3 縱軸式掘進(jìn)機(jī)極限位置穩(wěn)定性分析…………………………………19
3.3 本章小結(jié)…………………………………………………………………21
4重心對(duì)縱軸式掘進(jìn)機(jī)穩(wěn)定性的影響…………………………………………23
4.1重心位置變化對(duì)掘進(jìn)機(jī)向上、向下截割穩(wěn)定性的影響…………………23
4.2 重心位置變化對(duì)掘進(jìn)機(jī)橫向截割穩(wěn)定性的影響………………………25
4.3 本章小結(jié)…………………………………………………………………26
5 截割頭結(jié)構(gòu)與參數(shù)對(duì)掘進(jìn)機(jī)穩(wěn)定性的影響………………………………27
5.1 結(jié)構(gòu)參數(shù)…………………………………………………………………27
5.1.1 截割頭的錐角…………………………………………………………27
5.1.2 截割頭的尺寸…………………………………………………………31
5.2 截齒排列與工作參數(shù)……………………………………………………35
5.2.1 截線間距………………………………………………………………35
5.2.2 每線齒數(shù)………………………………………………………………40
5.3 運(yùn)動(dòng)參數(shù)…………………………………………………………………44
5.3.1 掘進(jìn)機(jī)截割頭的轉(zhuǎn)速…………………………………………………44
5.3.2 掘進(jìn)機(jī)截割頭的橫切速度……………………………………………47
5.4 本章小結(jié)…………………………………………………………………51
6 基于粒子群算法的掘進(jìn)機(jī)截割頭運(yùn)動(dòng)參數(shù)優(yōu)化設(shè)計(jì)……………………52
6.1 粒子群算法簡(jiǎn)介…………………………………………………………52
6.2 問(wèn)題的描述及模型建立…………………………………………………53
6.2.1 設(shè)計(jì)變量的選取………………………………………………………53
6.2.2 目標(biāo)函數(shù)的建立………………………………………………………53
6.2.3 約束條件的建立………………………………………………………54
6.3 模型求解…………………………………………………………………54
6.3.1 求解過(guò)程………………………………………………………………54
6.3.2 算法的參數(shù)設(shè)置………………………………………………………55
6.4 計(jì)算結(jié)果與分析…………………………………………………………56
6.5 本章小結(jié)…………………………………………………………………58
結(jié)論……………………………………………………………………………59
致謝……………………………………………………………………………61
參考文獻(xiàn)………………………………………………………………………62