【正文】 河北工程大學(xué)畢業(yè)設(shè)計(jì) I 摘 要 本次設(shè)計(jì)的內(nèi)容是 分體頂梁柔性 液壓支架， 我在本次 設(shè)計(jì)中主要負(fù)責(zé)該支架的液壓系統(tǒng)部分。 此次任務(wù)包括立柱、伸縮油缸、銷(xiāo)軸的的設(shè)計(jì)與計(jì)算，立柱由液壓油缸組成；伸縮油缸在頂梁部分，銷(xiāo)軸主要用于油缸與耳板之間的連接。 這種支架最大的特點(diǎn)是采用垂直 柔性 導(dǎo)桿結(jié)構(gòu)來(lái)代替?zhèn)鹘y(tǒng)的四連桿結(jié)構(gòu) ；采用分體式頂梁代替整體頂梁 。這種支架因結(jié)構(gòu)簡(jiǎn)單、重量輕、造價(jià)低、節(jié)省空間， 大大減輕了支架的整體重量，梁采用伸縮式的，支撐過(guò)程中能與地板接觸，不僅起到一定的掩護(hù)作用，而且還能起到一定的支撐作用，使支架更穩(wěn)定。 關(guān)鍵詞：液壓支架；分體頂梁 ； 柔性； 液壓油缸； 河北工程大學(xué)畢業(yè)設(shè)計(jì) II Abstract The design is flexible beam at the top of the hydraulic support, I am in this design is mainly responsible for the part of the hydraulic system of the stent. The taskincluding the column, telescopic cylinders, the pin design and calculation, to play a supportive role column, posed by the hydraulic cylinder。 telescopic part of the fuel tank in the roof beams, pin mainly used in the fuel tank and the connection between the ear plate. Column posed of the hydraulic cylinder。 telescopic part of the fuel tank in the roof beams, pin mainly used in the fuel tank and the connection between the ear plate. The greatest feature of this stent is flexible vertical guide structure to replace the traditional fourbar linkage structure。 the use of splittype roof top beam instead of the whole beam. Stent because of this simple structure, light weight, low cost and save space, reduce the overall weight of the stent, the use of telescopic beam, and support the process of contact with the floor, cover not only play a role, but also play a supporting role, so that a more stable support. Key words: hydraulic support。 points of the top beam； flexible； hydraulic cylinder。 河北工程大學(xué)畢業(yè)設(shè)計(jì) III 目 錄 摘要 ........................................................................................................................ I Abstract .................................................................................................................. II 第 1 章 緒論 ........................................................................................................ 1 液壓支架的發(fā)展現(xiàn)狀 ............................................................................................ 1 國(guó)外液壓支架的發(fā)展現(xiàn)狀 ........................................................................... 1 .............................................................................. 2 我國(guó)液壓支架研究與應(yīng) 用中存在的問(wèn)題 ............................................................ 2 本課題研究的意義 ................................................................................................ 3 第 2 章 架型的選擇 .............................................................................................. 5 支架機(jī)構(gòu)形式的比較分析 ....................................................................................... 5 垛式液壓支架的特點(diǎn) ................................................................................... 5 四連桿機(jī)構(gòu)液壓支架 ................................................................................... 5 單擺桿機(jī)構(gòu)液壓支架 ................................................................................... 6 第 3 章 總體結(jié)構(gòu)設(shè)計(jì) ........................................................................................ 8 支架基本參數(shù)的確定 .............................................................................................. 8 支架高度 ....................................................................................................... 8 支架伸縮比 ................................................................................................... 8 支架間距 ....................................................................................................... 8 支架寬度 ....................................................................................................... 8 底座長(zhǎng)度 ....................................................................................................... 9 頂梁長(zhǎng)度 ....................................................................................................... 9 支架工作阻力 ............................................................................................. 10 頂梁結(jié)構(gòu)設(shè)計(jì) ........................................................................................................ 10 頂梁形式的選擇 ......................................................................................... 10 伸縮梁結(jié)構(gòu)設(shè)計(jì) ......................................................................................... 11 底座結(jié)構(gòu)設(shè)計(jì) ........................................................................................................ 11 底座的選型 .................................................................................................. 12 確定底座結(jié)構(gòu)尺寸 ................................................................................... 12 柔性導(dǎo)桿穩(wěn)定機(jī)構(gòu)的設(shè)計(jì) .................................................................................... 13 彈簧鋼板長(zhǎng)度的確定 ................................................................................. 13 河北工程大學(xué)畢業(yè)設(shè)計(jì) IV 彈簧鋼板截面尺寸及板片數(shù)量的確定 ..................................................... 14 立柱的確定 ............................................................................................................. 16 工作阻 力的確定 .......................................................................................... 16 立柱的確定 .................................................................................................. 18 推移千斤頂 ............................................................................................................. 20 推移裝置的選型 .......................................................................................... 20 推移前千斤頂?shù)拇_定 ................................................................................. 21 伸縮梁千斤頂?shù)拇_定 ............................................................................................ 22 第 4 章 頂梁強(qiáng)度校核 ........................................................................................ 23 材料的選擇 ..........................................................