本文關鍵詞： 裝載機 液壓傳動 組合傳動 系統(tǒng)設計 建模仿真　出處：《長安大學》2014年碩士論文　論文類型：學位論文

【摘要】：隨著中國經濟的快速發(fā)展、基礎設施的不斷完善，使得中國成為工程機械最大的市場之一。裝載機是工程機械的主要機種之一，可以完成鏟掘、裝卸、運輸?shù)榷喾N工況作業(yè)，廣泛應用于公路、鐵路、水電、建筑、港口、礦山等建設工程行業(yè)。傳動系統(tǒng)是裝載機的重要組成系統(tǒng)之一，決定著整機的性能。 液壓機械組合傳動裝載機克服了傳統(tǒng)的液力傳動系統(tǒng)高效區(qū)范圍窄、整機性能低、傳動準確性和剛度不夠高、可控性差、布置形式單一等缺點并繼承了液力傳動系統(tǒng)的大多數(shù)優(yōu)點。盡管液壓機械組合傳動技術日趨成熟并早已投入生產使用，但是國內液壓和電子技術比較落后，液壓機械組合傳動在裝載機上的應用研究較少。本文以液壓機械組合傳動技術在裝載機上的應用為研究內容，對液壓機械組合傳動型裝載機進行了較為全面的研究。 在查閱大量國內外相關專業(yè)資料及文獻的基礎上，本文概述了國內外液壓機械組合傳動型裝載機的研究現(xiàn)狀及發(fā)展趨勢，介紹了液壓機械組合傳動與液力機械傳動相比所具有的優(yōu)勢。 闡述了液壓機械組合傳動方案的幾種形式，并舉例簡單介紹了液壓機械組合傳動系統(tǒng)的工作原理，并對液壓機械組合傳動裝置的特性及與發(fā)動機的匹配控制進行了分析。 在國內常見的ZL50裝載機基本參數(shù)的基礎上，根據(jù)前面的分析對其液壓機械組合傳動系統(tǒng)進行設計計算，確定液壓泵、液壓馬達等的選型，并在此基礎上建立了各個環(huán)節(jié)的數(shù)學模型。 根據(jù)所設計的液壓機械組合傳動系統(tǒng)各參數(shù)和已建立的數(shù)學模型，分別利用AMESim軟件進行變量泵、變量馬達和整個液壓機械組合傳動系統(tǒng)的仿真，并進行仿真分析。結果表明所設計的液壓機械組合傳動系統(tǒng)是正確的，完全可以應用于裝載機的生產中。另外，在設計整個系統(tǒng)時，，應布局合理，減少管道長度，這樣能使系統(tǒng)獲得較好的動態(tài)響應。
[Abstract]:With the rapid development of Chinese economy, the improvement of infrastructure, the Chinese market has become one of the biggest construction machinery. The loader is one of the main types of engineering machinery, can complete digging, loading and unloading, transportation and other operation conditions, widely used in highway, railway, hydropower, construction, ports, mines and other construction projects industry. Drive system is an important component of system of loader, determines the performance of the whole machine.
To overcome the traditional high efficiency hydraulic transmission system of a narrow range of hydraulic machinery driving loader, the performance is low, the transmission accuracy and stiffness is not high enough, poor controllability, disadvantages of layout of single and inherits most of the advantages of the hydraulic drive system. Although the combination of hydraulic machinery transmission technology matures and has been put into production and use, but domestic hydraulic and electronic technology is relatively backward, hydraulic mechanical transmission in the application of combined loading machine less. Based on the hydraulic mechanical transmission technology in the application of combination loader as the research content, the combination of hydraulic mechanical drive type loader is studied.
On the basis of consulting a large number of domestic and foreign related professional materials and documents, this paper summarizes the research status and development trend of hydraulic mechanical combined transmission loaders at home and abroad, and introduces the advantages of hydraulic mechanical combined transmission compared with hydraulic mechanical transmission.
This paper expounds several forms of the combined transmission scheme of hydraulic machinery, and briefly introduces the working principle of the hydraulic mechanical combined transmission system with examples, and analyzes the characteristics of the hydraulic mechanical combined transmission device and the matching control with the engine.
On the basis of the basic parameters of ZL50 loaders commonly used in China, based on the above analysis, the hydraulic mechanical combined transmission system is designed and calculated, and the selection of hydraulic pumps, hydraulic motors and so on is determined. Based on that, a mathematical model of all links is established.
According to the parameters of the hydraulic mechanical transmission system of the combination of design and has established a mathematical model of the variable pump, respectively using AMESim software, simulation of variable motor and the hydraulic mechanical driving system, and simulation analysis is carried out. The results show that the hydraulic machinery combination drive system design is correct, can be applied to the loader the production. In addition, in the design of the whole system, should rationally, reduce the length of the pipeline, which makes the system have better dynamic response.

【學位授予單位】：長安大學
【學位級別】：碩士
【學位授予年份】：2014
【分類號】：TH243

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