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致謝
目錄
前言 6
1.液壓千斤頂總述 7
1.1選題背景 7
1.2液壓千斤頂?shù)母攀?8
2.1技術(shù)特點(diǎn) 9
2.2基礎(chǔ)參數(shù) 9
3.1液壓千斤頂工作原理 10
3.2液壓千斤頂總體設(shè)計(jì) 11
4.1液壓系統(tǒng)的設(shè)計(jì)步驟與設(shè)計(jì)要求 13
4.2進(jìn)行工況分析、確定液壓系統(tǒng)的主要參數(shù) 14
4.3液壓缸主要零件的結(jié)構(gòu)、材料及技術(shù)要求 15
5液壓缸的設(shè)計(jì)計(jì)算 18
5.1液壓缸的結(jié)構(gòu)尺寸計(jì)算 18
5.2活塞桿直徑強(qiáng)度及穩(wěn)定性校驗(yàn) 26
5.3液壓缸性能參數(shù)的計(jì)算 27
5.4液壓缸的結(jié)構(gòu)設(shè)計(jì) 28
6液壓輔助元件 36
6.1連接管件 36
6.2液壓管接頭 37
6.3閥類零件的選擇 38
6.4油箱的設(shè)計(jì) 40
6.5液壓油的選擇 42
7熱處理工藝 43
7.1液壓千斤頂熱處理 43
8彎曲桿手柄 44
8.1彎曲手柄的設(shè)計(jì) 44
8.2支座反力求解 44
8.3桿的剪切應(yīng)力Fs和彎矩M 44
8.4確定危險(xiǎn)截面 46
9總結(jié) 48
參考文獻(xiàn) 49
摘要
液壓千斤頂又稱油壓千斤頂，是一種采用活塞或液壓缸作為剛性頂舉件的千斤頂。 簡單起重設(shè)備一般只備有起升機(jī)構(gòu)，用以起升重物。構(gòu)造簡單、重量輕、便于攜帶，移動(dòng)方便。廣泛應(yīng)用于建筑、橋梁、公路鐵路建設(shè)、汽車維修、船舶維修等部門。
液壓千斤頂是典型的利用液壓傳動(dòng)來工作的設(shè)備。液壓傳動(dòng)是利用液體作為工作介質(zhì)來傳遞能量和進(jìn)行控制的傳動(dòng)方式，液壓傳動(dòng)是根據(jù)17世紀(jì)帕斯卡提出的液體靜壓力傳動(dòng)原理發(fā)展起來的一門新技術(shù)是工農(nóng)業(yè)中廣為引用的技術(shù)。通過手動(dòng)泵將油箱中的液壓油通過管閥送到液壓缸的底部來頂起活塞舉升重物。其將液壓能轉(zhuǎn)化成機(jī)械能，利用了密閉容器中止?jié)L體的壓力以同樣大小向四周傳遞的特性，具有輸出推力大的有點(diǎn)。
【關(guān)鍵詞】: 手動(dòng)泵、液壓缸、單向閥、截止閥、油箱、液壓傳動(dòng)
Abstract
Hydraulic jacks and say hydraulic jack, is a kind of adopts the piston or hydraulic cyli- ner for parts as rigid top jacks. Simple lifting equipment with hoisting mechanismonly commonly, to lifting weights. Simple structure, light weight, easy to carry,convenient to mo- ve Widely used in construction, bridge, road and railway construction, vehicle maintenance, ship maintenance and other departments.
Is a typical use of hydraulic jacks hydraulic equipment to work through the manual pump to the hydraulic oil tank through the valve to the hydraulic cylinder piston from the bottom to the top of lifting heavy objects. Hydraulic transmission is using liquid as medium to transmit energy and control the transmission way, hydraulic transmission is put forward according to the 17th century PASCAL static pressure transmission principle of liquid developed new technology is a door in the technology industry and agriculture widely cited.?It will be hydraulic energy into mechanical energy, use of the closed container body still rolling pressure to pass the same size as the surrounding properties, with output thrust a little big.
【Keywords】 hand-pump, hydraulic cylinder,single direction valve,stop- valve ,tank,hydraulic drive
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