本文選題：冷卻系統(tǒng) + 打樁機(jī)�。� 參考：《湘潭大學(xué)》2017年碩士論文

【摘要】：隨著我國基礎(chǔ)建設(shè)的高速發(fā)展,跨海大橋、高層建筑、鐵路高架橋等建設(shè)項(xiàng)目不斷增多,施工處的地質(zhì)條件越來越復(fù)雜,建設(shè)難度也越來越高,因此,對(duì)工程中所需要的大型工程設(shè)備的要求也越來越高,而樁工機(jī)械又是大型工程設(shè)備中的重中之重。600匹液壓打樁機(jī)是我國自行研制的大功率樁工機(jī)械,廣泛應(yīng)用于建筑、橋梁、碼頭和海洋工程等項(xiàng)目的樁基礎(chǔ)施工。由于打樁機(jī)作業(yè)環(huán)境復(fù)雜,且需要長時(shí)間高負(fù)荷運(yùn)行,因此其液壓油冷卻系統(tǒng)經(jīng)常出現(xiàn)過熱甚至嚴(yán)重過熱的問題,影響工程進(jìn)度及施工質(zhì)量。為解決600匹液壓打樁機(jī)液壓油冷卻系統(tǒng)的過熱問題,本文作者在大量查閱國內(nèi)外文獻(xiàn)并與打樁機(jī)生產(chǎn)廠家交流后,研制了適用于打樁機(jī)液壓油散熱的智能冷卻系統(tǒng)并運(yùn)用AMESim軟件對(duì)該系統(tǒng)仿真分析。通過智能冷卻系統(tǒng)的安裝測試結(jié)果表明,此智能冷卻系統(tǒng)較好的解決了600匹液壓打樁機(jī)液壓油過熱的問題。論文的具體研究內(nèi)容及創(chuàng)新成果如下:1.設(shè)計(jì)了針對(duì)600匹液壓打樁機(jī)的智能冷卻系統(tǒng),包括智能冷卻系統(tǒng)控制方案的設(shè)計(jì)、冷卻系統(tǒng)液壓元件的匹配、控制軟件算法的設(shè)計(jì)等;2.選擇最優(yōu)的散熱器制造材料并制定了散熱器焊接工藝;3.針對(duì)600匹液壓打樁機(jī)液壓油散熱器的散熱要求及安裝尺寸,確定了散熱器的結(jié)構(gòu)及尺寸參數(shù),并對(duì)散熱器進(jìn)行校核計(jì)算,同時(shí)對(duì)散熱器內(nèi)流體的阻力進(jìn)行了計(jì)算,計(jì)算出空氣及液壓油通過散熱器的阻力,為冷卻系統(tǒng)液壓元件的匹配提供依據(jù);4.運(yùn)用AMESim軟件建立了600匹液壓打樁機(jī)智能冷卻系統(tǒng)的仿真模型,依據(jù)智能控制原理建立了以氣-液換熱器、雙風(fēng)扇、熱負(fù)荷組件為主要分析對(duì)象的仿真模型,并利用軟件內(nèi)的控制元件和溫度傳感器組合,實(shí)現(xiàn)對(duì)風(fēng)扇轉(zhuǎn)速的智能控制,分別設(shè)置環(huán)境溫度為35℃和45℃,得出不同環(huán)境溫度下液壓油的溫度變化曲線;5.在35℃環(huán)境溫度下對(duì)智能冷卻系統(tǒng)進(jìn)行實(shí)機(jī)試驗(yàn),證明該智能冷卻系統(tǒng)完全滿足600匹液壓打樁機(jī)液壓油的散熱要求,通過試驗(yàn)結(jié)果與仿真結(jié)果對(duì)比,證明了基于AMESim軟件打樁機(jī)智能冷卻系統(tǒng)仿真建模的可行性,為冷卻系統(tǒng)的優(yōu)化設(shè)計(jì)提供了參考依據(jù)。
[Abstract]:With the rapid development of China's infrastructure, the number of construction projects such as cross-sea bridges, high-rise buildings and railway viaducts is increasing, and the geological conditions of the construction sites are becoming more and more complex and the construction is becoming more and more difficult. The requirement of large engineering equipment is higher and higher, and piling machinery is the most important part of the large engineering equipment. 600 hydraulic piling machines are high power piling machines developed by our country, which are widely used in buildings and bridges. Pile foundation construction for projects such as wharf and ocean engineering. Because the working environment of pile driver is complex and needs a long time and high load operation, the hydraulic oil cooling system often overheat or even seriously overheat, which affects the project progress and construction quality. In order to solve the overheating problem of the hydraulic oil cooling system of 600 hydraulic pile drivers, the author consulted a large number of literatures at home and abroad and communicated with the pile driver manufacturers. An intelligent cooling system suitable for the heat dissipation of hydraulic oil of pile driver is developed and simulated by AMESim software. The test results of the intelligent cooling system show that the intelligent cooling system can solve the problem of 600 hydraulic pile driver hydraulic overheating. The specific research contents and innovative results of this paper are as follows: 1. The intelligent cooling system for 600 hydraulic pile drivers is designed, including the design of the control scheme of the intelligent cooling system, the matching of the hydraulic components of the cooling system, the design of the control software algorithm and so on. The optimum radiator manufacturing material is selected and the welding process of radiator is made. According to the heat dissipation requirements and installation dimensions of hydraulic oil radiators of 600 hydraulic pile drivers, the structure and dimension parameters of the radiators are determined, the radiators are checked and calculated, and the resistance of the fluid in the radiator is calculated. The resistance of air and hydraulic oil through the radiator is calculated, which provides the basis for the matching of hydraulic components in cooling system. The simulation model of intelligent cooling system of 600 hydraulic pile drivers is established by using AMESim software. According to the principle of intelligent control, the simulation model of gas-liquid heat exchanger, double fan and heat load module is established. The intelligent control of fan rotational speed is realized by the combination of control element and temperature sensor in the software. The ambient temperature is set at 35 鈩，

本文編號(hào)：1914623