【正文】 ...............................................................1 液壓故障診斷的現況和發(fā)展趨勢 .................................................................................1 國外液壓故障診斷的現況和發(fā)展趨勢 ....................................................................1 國外液壓故障診斷的現況和發(fā)展趨勢 ....................................................................2 現有主要主要故障分析法 .............................................................................................22 汽車式起重機支腿結構及液壓系統 .................................................................................................4 汽車起重機支腿結構 .....................................................................................................4 汽車起重機支腿液壓系統 .............................................................................................6 汽車起重機支腿液壓系統分析 ................................................................................6 汽車起重機支腿液壓系統優(yōu)化方案 ........................................................................73 故障分析法原理 .......................................................................................................................................9 故障樹分析法概述 .........................................................................................................9 故障樹的建立 .................................................................................................................9 FTA 的符號及其運算 ...............................................................................................9 FTA 方法步驟及程序 .............................................................................................114 基于故障樹對汽車起重機支腿液壓系統故障分析 ..................................................................13 汽車起重機支腿液壓系統故障分析 ...........................................................................13 汽車起重機支腿液壓系統故障樹分析 .......................................................................13 建立故障樹 ..............................................................................................................13 定性分析 ..................................................................................................................15 故障排除分析 ..............................................................................................................17 總結 ...............................................................................................................................18致 謝 .............................................................................................................................................................19參考文獻 ........................................................................................................................................................20摘 要本文在對汽車起重機支腿功能、組成、工作特點和液壓系統進行分析的基礎上，對汽車起重機液壓系統系提出優(yōu)化方案。在優(yōu)化支腿液壓系統過程中，對支腿液壓回路進行典型工況分析，確定了液壓系統要求，并結合優(yōu)化思路擬定液壓系統原理圖。并結合實例“支腿不動作”典型故障進行了定性分析，利用故障樹根據故障現象分析其發(fā)生原因，為汽車起重機液壓系統故障的診斷、預測和預防提供可靠依據。At the same time，Analysis of the outrigger hydraulic system of mon fault and using the method of fault tree analysis, chart to automobile a leg hydraulic fault diagnosis analysis. Combined with the example of a leg not action，Qualitative analysis of the typical fault，the fault tree analysis according to the fault phenomena which occurred for truck crane reasons, hydraulic system failure diagnosis, prediction and prevention provide reliable basis.Keywords: truck crane, outrigger hydraulic system, hydraulic fault diagnosis, fault tree analysis