本文選題：土壓平衡 + 頂管機(jī)��； 參考：《安徽理工大學(xué)》2014年碩士論文

【摘要】：土壓平衡頂管機(jī)是一種集多項技術(shù)于一體的地下管道鋪設(shè)設(shè)備,具有使用土質(zhì)范圍廣、性能穩(wěn)定、環(huán)境污染小和地面變形小等優(yōu)異性能。近年來,伴隨著我國城市化進(jìn)程的加快,土壓平衡頂管機(jī)的使用范圍日益廣泛,研究其驅(qū)動系統(tǒng)的相關(guān)設(shè)計理論與設(shè)計方法,可為頂管機(jī)設(shè)備的設(shè)計制造提供一定的理論參考。 本文首先分析了國內(nèi)外頂管機(jī)行業(yè)的發(fā)展歷史與研究現(xiàn)狀,重點(diǎn)分析了土壓平衡頂管機(jī)的驅(qū)動方式和驅(qū)動系統(tǒng)的發(fā)展方向,提出液壓驅(qū)動方式具有安裝尺寸小、成本低以及適應(yīng)劇變工況等優(yōu)點(diǎn)更適合作為土壓平衡頂管機(jī)的驅(qū)動方式,并以工稱直徑(?)2200mm土壓平衡頂管機(jī)為例,采用理論分析、參數(shù)計算和模擬仿真等方法,設(shè)計出其液壓驅(qū)動系統(tǒng)并進(jìn)行性能仿真。 論文所設(shè)計的土壓平衡頂管機(jī)液壓驅(qū)動系統(tǒng)分為刀盤驅(qū)動系統(tǒng)、糾偏驅(qū)動系統(tǒng)和輸土驅(qū)動系統(tǒng),其中刀盤驅(qū)動系統(tǒng)采用變量泵—變量馬達(dá)閉式容積控制回路、油缸“#”字型布置的糾偏驅(qū)動系統(tǒng)、輸土系統(tǒng)采用變量泵—定量馬達(dá)開式容積控制回路,利用蓄能器實(shí)現(xiàn)出土閘口的緊急關(guān)閉�；谏鲜龌A(chǔ),完成了各系統(tǒng)參數(shù)匹配計算與關(guān)鍵液壓元件選型,建立了AMESim仿真模型并進(jìn)行仿真分析。仿真結(jié)果表明：刀盤驅(qū)動系統(tǒng)調(diào)速平穩(wěn),在劇變載荷條件下0.5s內(nèi)刀盤能夠穩(wěn)定至額定轉(zhuǎn)速工作；糾偏系統(tǒng)能在負(fù)載剛度1e-7N/m及以下的土層中正常工作；輸土系統(tǒng)在負(fù)載波動條件下,能穩(wěn)定工作,蓄能器在緊急情況下能快速關(guān)閉出土閘口。論文設(shè)計的液壓驅(qū)動系統(tǒng)能夠滿足實(shí)際工程需要,為土壓平衡頂管機(jī)液壓驅(qū)動系統(tǒng)進(jìn)一步優(yōu)化設(shè)計提供一定參考。
[Abstract]:The soil pressure balanced pipe jacking machine is a kind of underground pipeline laying equipment which integrates many technologies. It has excellent performances such as wide range of use of soil, stable performance, small environmental pollution and small surface deformation.In recent years, with the acceleration of urbanization in China, the application of soil-pressure balanced pipe-jacking machine is becoming more and more extensive. To study the relevant design theory and design method of its driving system can provide a certain theoretical reference for the design and manufacture of pipe-jacking machine equipment.In this paper, the development history and research status of pipe-jacking machine at home and abroad are analyzed, and the driving mode and driving system of soil-pressure balanced pipe-jacking machine are emphatically analyzed. It is pointed out that the hydraulic driving mode has small installation size.The advantages of low cost and adapting to sudden changes are more suitable as the driving mode of the soil pressure balancing pipe jacking machine. Taking the weighing diameters of 2200mm earth pressure balancing pipe jacking machine as an example, the methods of theoretical analysis, parameter calculation and simulation are adopted, such as theoretical analysis, parameter calculation and simulation, etc.The hydraulic drive system is designed and its performance is simulated.The hydraulic driving system of the soil pressure balancing pipe jacking machine is divided into three parts: the cutter head drive system, the deviation correction drive system and the soil conveying drive system, in which the cutter head drive system adopts the closed volumetric control loop of variable variable pump and variable variable motor.The displacement correction drive system of "#" type of cylinder is arranged, the open volume control loop of variable pump and quantitative motor is adopted in the soil transportation system, and the emergency closure of unearthed gate is realized by accumulator.On the basis of the above, the parameter matching calculation and the selection of key hydraulic components are completed, and the AMESim simulation model is established and analyzed.The simulation results show that the speed regulation of the cutter head drive system is stable, the cutter head can work steadily to the rated speed within 0.5 s under the condition of sudden load change, and the bias correction system can work normally in the soil layer with load stiffness 1e-7N/m and below.Under the condition of load fluctuation, the system can work stably, and the accumulator can close the unearthed gate quickly in the case of emergency.The hydraulic drive system designed in this paper can meet the practical engineering requirements and provide a certain reference for the further optimization design of the hydraulic drive system of the soil pressure balance pipe jacking machine.
【學(xué)位授予單位】：安徽理工大學(xué)
【學(xué)位級別】：碩士
【學(xué)位授予年份】：2014
【分類號】：TU990.3

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