【摘要】：在工程機(jī)械中,液壓系統(tǒng)是十分重要的核心部件之一,液壓系統(tǒng)的可靠性對(duì)于整機(jī)性能至關(guān)重要。通過(guò)對(duì)液壓系統(tǒng)的動(dòng)態(tài)性能的仿真、分析與研究,可以為整機(jī)性能的提高和優(yōu)化提供理論依據(jù),縮短開(kāi)發(fā)周期,降低研發(fā)成本。 本課題以某機(jī)型裝載機(jī)液壓系統(tǒng)為研究對(duì)象,利用SimulationX仿真軟件對(duì)工作裝置液壓系統(tǒng)進(jìn)行了仿真建模,建立了整機(jī)工作裝置的多體動(dòng)力學(xué)模型,得到了工作裝置液壓系統(tǒng)及其元件的動(dòng)態(tài)性能、不同負(fù)荷情況下的壓力-流量特性等性能指標(biāo)。 本文主要進(jìn)行了以下幾部分的工作：建立了某型號(hào)裝載機(jī)整機(jī)工作裝置液壓系統(tǒng)及其元件的仿真模型,分析了工作裝置液壓系統(tǒng)及其各個(gè)元件的動(dòng)態(tài)性能參數(shù)；建立了工作裝置機(jī)械機(jī)構(gòu)的多體動(dòng)力學(xué)模型,分析了各回路的壓力、流量等特性參數(shù)；通過(guò)一系列實(shí)驗(yàn),測(cè)試工作裝置液壓系統(tǒng)在不同工況下的動(dòng)態(tài)特性,將實(shí)驗(yàn)結(jié)果與仿真結(jié)果進(jìn)行對(duì)比,進(jìn)一步完善了仿真模型,同時(shí)也為繼續(xù)在該模型基礎(chǔ)上對(duì)裝載機(jī)液壓系統(tǒng)的優(yōu)化匹配研究提供實(shí)際依據(jù)。 本文對(duì)裝載機(jī)各個(gè)工作裝置的液壓系統(tǒng)進(jìn)行了建模,得出了理想的仿真結(jié)果；跟實(shí)驗(yàn)數(shù)據(jù)進(jìn)行對(duì)比,為以后裝載機(jī)的技術(shù)改進(jìn)和系統(tǒng)優(yōu)化提供模型參考；通過(guò)對(duì)裝載機(jī)液壓系統(tǒng)的建模仿真與實(shí)驗(yàn)研究,全面掌握裝載機(jī)液壓系統(tǒng)的動(dòng)態(tài)性能,包括各元件的在不同作業(yè)狀況下的壓力-流量特性、流量脈動(dòng)、壓力瞬態(tài)峰值等性能參數(shù),為整機(jī)液壓系統(tǒng)性能的優(yōu)化打下基礎(chǔ)。
[Abstract]:In construction machinery, hydraulic system is one of the most important components, and the reliability of hydraulic system is very important to the performance of the whole machine. Through the simulation, analysis and research of the dynamic performance of the hydraulic system, it can provide the theoretical basis for the improvement and optimization of the performance of the whole machine, shorten the development period and reduce the research and development cost. In this paper, the hydraulic system of a certain loader is taken as the research object, and the simulation modeling of the hydraulic system of the working device is carried out by using the SimulationX simulation software, and the multi-body dynamics model of the working device of the whole machine is established. The dynamic performance of the hydraulic system and its components and the pressure-flow characteristics under different loads are obtained. The main work of this paper is as follows: the simulation model of the hydraulic system and its components of a certain type loader is established, and the dynamic performance parameters of the hydraulic system of the working device and its components are analyzed. The multi-body dynamic model of the mechanical mechanism of the working device is established, and the characteristic parameters of each loop, such as pressure and flow rate, are analyzed, and the dynamic characteristics of the hydraulic system of the working device under different working conditions are tested through a series of experiments. By comparing the experimental results with the simulation results, the simulation model is further improved, and the practical basis is provided for the further research on the optimization and matching of the loader hydraulic system based on the model. In this paper, the hydraulic system of each working device of the loader is modeled, and the ideal simulation results are obtained, and compared with the experimental data, the model reference is provided for the technical improvement and system optimization of the loader in the future. Through modeling, simulation and experimental study on hydraulic system of loader, the dynamic performance of hydraulic system of loader, including pressure-flow characteristic and flow pulsation of each component under different working conditions, is mastered. The pressure transient peak and other performance parameters lay the foundation for the optimization of the hydraulic system performance of the whole machine.
【學(xué)位授予單位】：山東大學(xué)
【學(xué)位級(jí)別】：碩士
【學(xué)位授予年份】：2011
【分類(lèi)號(hào)】：TH137;TH243

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本文編號(hào)：2200369