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北華航天工業(yè)學院畢業(yè)論文
目錄
摘要·················································································································Ⅰ
ABSTRACT·····································································································Ⅱ
前言···················································································································1
1汽車起重機的類型與結構···············································································2
1.1汽車起重機的分類·······················································································2
1.2汽車起重機的結構及舉升機構的特點·························································2
1.3汽車起重機液壓系統(tǒng)的構成形式·································································3
1.4 汽車起重機的發(fā)展狀況··············································································4
2汽車起重機舉升機構設計···············································································6
2.1確定舉升機構傳動方案···············································································6
2.2舉升機構的設計計算···················································································6
2.2.1鋼絲繩的選擇·····························································································6
2.2.2卷筒的設計計算·························································································7
2.2.3滑輪的選用·······························································································11
2.2.4吊鉤的選用·······························································································13
2.2.5液壓馬達的選擇·······················································································14
2.2.6液壓泵的選擇···························································································15
2.2.7減速器的選擇···························································································17
2.2.8制動器的選擇···························································································18
2.2.9 聯(lián)軸器的選擇··························································································20
3液壓系統(tǒng)的設計····························································································20
3.1 液壓系統(tǒng)主要組成····················································································20
3.2 舉升機構的液壓回路················································································21
3.3變幅機構液壓回路·····················································································22
3.4 回轉機構液壓回路····················································································23
3.5吊臂伸縮機構液壓回路·············································································23
3.6支腿液壓回路····························································································24
4總結···············································································································26
致謝·················································································································27
參考文獻··········································································································28
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