ZY86002550型掩護(hù)式液壓支架

機(jī)械論文編號:JX306 所有圖紙,任務(wù)書.論文字?jǐn)?shù):26628.頁數(shù):72
目錄
1 緒論 ...............................................................1
1.1 液壓支架的用途 ...................................................1
1.2液壓支架的工作原理 ................................................1
1.3 設(shè)計(jì)事項(xiàng) .........................................................2
1.3.1 設(shè)計(jì)目的 .......................................................2
1.3.2 對液壓支架的基本要求 ...........................................3
1.3.3 設(shè)計(jì)液壓支架必需的基本參數(shù) .....................................3
1.4 液壓支架的分類 ...................................................4
1.5 液壓支架的組成 ...................................................5
1.6 液壓支架的主要結(jié)構(gòu)件及其用途..................................... 6
1.6.1 頂梁........................................................... 6
1.6.2 底座........................................................ ...6
1.6.3 掩護(hù)梁......................................................... 6
1.6.4 活動側(cè)護(hù)板 .....................................................6
1.6.5 連桿........................................................... 7
1.7 液壓支架的液壓系統(tǒng) ...............................................7
1.7.1 液壓支架傳動系統(tǒng)的基本要求..................................... 7
1.7.2 液壓支架的液壓傳動特點(diǎn) .........................................7
1.8 液壓支架的選型................................................... 8
2 液壓支架的結(jié)構(gòu)設(shè)計(jì)  ................................................10
2.1 液壓支架的主要尺寸的確定 .........................................10
2.1.1 支架高度和伸縮比............................................... 10
2.1.2 支架間距 .......................................................10
2.1.3 底座長度 .......................................................11
2.1.4 頂梁長度的確定 .................................................11
2.1.5 立柱布置....................................................... 12
2.1.6 通風(fēng)斷面的計(jì)算 .................................................13
2.2 各部件結(jié)構(gòu)選擇 ...................................................14
2.2.1 頂梁 ...........................................................14
2.2.2 底座 ...........................................................16
2.2.3 立柱 ...........................................................17
2.2.4 推移裝置 .......................................................19
2.2.5 護(hù)幫千斤頂 .....................................................22
2.3 四連桿結(jié)構(gòu)....................................................... 22
2.3.1 四連桿機(jī)構(gòu)的作用 ...............................................22
2.3.2 四連桿機(jī)構(gòu)設(shè)計(jì)的要求 ...........................................23
2.3.3 四連桿機(jī)構(gòu)的設(shè)計(jì)............................................... 24
2.4液壓支架的主要技術(shù)參數(shù) ............................................33
3液壓系統(tǒng)  ...........................................................36
3.1 立柱和千斤頂 .....................................................36
3.2 支架液壓閥........................................................37
3.2.1 液控單向閥 .....................................................37
3.2.2 安全閥 .........................................................38
3.2.3 操縱閥......................................................... 38
3.2.4 液壓支架液壓閥的密封技術(shù)分析................................... 39
3.3 液壓支架液壓原理圖............................................... 40
3.4 液壓支架的控制方式 ...............................................41
3.4.1 手動控制....................................................... 41
3.4.2 自動控制....................................................... 41
3.5 液壓系統(tǒng)安裝、調(diào)試、保養(yǎng)......................................... 42
3.5.1 安裝：......................................................... 42
3.5.2 調(diào)試：........................................................ .50
3.5.3 保養(yǎng)：......................................................... 51
4 液壓支架的受力分析與校核 ...........................................53
4.1 液壓支架的支護(hù)性能與外載荷 .......................................53
4.2 液壓支架基本技術(shù)參數(shù)的確定....................................... 54
4.2.1 支護(hù)面積....................................................... 54
4.2.2 支護(hù)強(qiáng)度....................................................... 54
4.2.3 確定立柱的技術(shù)參數(shù) .............................................55
4.2.4 立柱的初撐力 ...................................................56
4.3立柱強(qiáng)度和穩(wěn)定性驗(yàn)算 ..............................................56
4.3.1立柱缸體強(qiáng)度驗(yàn)算 ................................................56
4.3.2立柱穩(wěn)定性驗(yàn)算 ..................................................58
4.3.3立柱活塞桿強(qiáng)度驗(yàn)算.............................................. 60
4.4 平衡千斤頂強(qiáng)度校核............................................... 62
5 液壓支架的發(fā)展趨勢..................................................64

結(jié)論 .................................................................66
參考文獻(xiàn) .............................................................67
致謝 .................................................................68
附錄 .................................................................69

摘   要
     掩護(hù)式支架作為上世紀(jì)70年代初剛出現(xiàn)的產(chǎn)品，其顯著特征是在頂梁末端和底座之間附加有掩護(hù)梁。掩護(hù)梁一般是傾斜的，鉸接在頂梁和底座之間。從運(yùn)動學(xué)講，它是穩(wěn)定的，這是掩護(hù)式支架最優(yōu)于框式支架和垛式支架的一點(diǎn)，掩護(hù)梁也完全封閉了采空區(qū)，從而能夠防止破碎頂板巖石掉入支撐工作面。因此，一般來說，掩護(hù)式支架的支撐工作面是較清潔的。
本文主要介紹了：液壓支架的發(fā)展歷程及發(fā)展趨勢；液壓支架的組成、作用和分類；液壓支架的液壓控制系統(tǒng)；液壓支架設(shè)計(jì)的一般步驟；液壓支架的操縱、維護(hù)、故障分析及處理等。在ZY8600型液壓支架的設(shè)計(jì)過程中，著重對頂梁、底座和立柱進(jìn)行了分析和設(shè)計(jì)，同時(shí)對液壓支架的液壓系統(tǒng)進(jìn)行了介紹。根據(jù)其常見失效形式、影響因素及基本設(shè)計(jì)要求，給出了重要結(jié)構(gòu)件的受力分析、強(qiáng)度和剛度的設(shè)計(jì)方法。在該支架的四連桿機(jī)構(gòu)設(shè)計(jì)中，采用了計(jì)算機(jī)求解。對立柱和平衡千斤頂進(jìn)行了強(qiáng)度和穩(wěn)定性效核。
關(guān)鍵詞：液壓支架、ZY8600、掩護(hù)式、結(jié)構(gòu)設(shè)計(jì)、采煤機(jī)械

ABSTRACT

Stand cover of the last century as the early 1970s emerging products, the notable features of the top beam between the terminal and the base of attaching a shield. Cover is generally inclined beams, the hinged roof beams and between the base. Kinematics from the speakers, it is stable, which is the optimal shield in the box-stent and the stent Crib 1:00, Leung also cover is closed goaf, so as to prevent the rock into the broken roof support Face. Therefore, in general, cover Stand Face the support of the cleaner.
This paper describes : hydraulic supports the development process and development trends; Hydraulic support the composition, role and classification; hydraulic supports the hydraulic control system; hydraulic supports the general design steps; hydraulic supports manipulation, maintenance, Fault analysis and processing. In ZY8600-hydraulic support the design process, focusing on the top beam and column base and the analysis and design Meanwhile hydraulic supports the right hydraulic system was introduced. According to their common failure mode, influencing factors and basic design requirements, is an important structure the force. Strength and stiffness of the design method. The stent in the four-bar linkage design, using a computer to solve. Column right balance between Jack and the strength and stability of nuclear efficiency.

Keywords : hydraulic support, ZY8600, shield, structural design, mechanical mining