【摘要】：全液壓轉(zhuǎn)向器作為一種輸出功率較大的全助力轉(zhuǎn)向器,廣泛應(yīng)用于大型工程機(jī)械。傳統(tǒng)的依靠增加內(nèi)部通流面積來提高排量的轉(zhuǎn)向器,體積過大、安裝不便,而具有流量放大功能的同軸流量放大轉(zhuǎn)向器依然存轉(zhuǎn)向沖擊振動(dòng)的問題,同時(shí)流量放大倍數(shù)不夠高。雙向緩沖負(fù)荷傳感大流量放大全液壓轉(zhuǎn)向器是為了解決上述問題而設(shè)計(jì)的新型全液壓轉(zhuǎn)向器。由該轉(zhuǎn)向器組成的轉(zhuǎn)向系統(tǒng)具有排量大、功率高、轉(zhuǎn)向穩(wěn)定的優(yōu)點(diǎn)。為了進(jìn)一步優(yōu)化其靜動(dòng)態(tài)性能,本論文將對(duì)該轉(zhuǎn)向系統(tǒng)的靜動(dòng)態(tài)性能進(jìn)行仿真分析和研究,提出轉(zhuǎn)向器的改進(jìn)設(shè)計(jì)措施及結(jié)構(gòu)方案。 目前,對(duì)液壓轉(zhuǎn)向系統(tǒng)的靜動(dòng)態(tài)特性進(jìn)行研究比較經(jīng)濟(jì)、有效、實(shí)用的方法是運(yùn)用相關(guān)的計(jì)算機(jī)軟件進(jìn)行仿真分析。液壓轉(zhuǎn)向系統(tǒng)靜動(dòng)態(tài)特性的仿真分析能有效縮短設(shè)計(jì)周期,避免重復(fù)試驗(yàn)及加工從而降低成本。同時(shí)在設(shè)計(jì)階段就能及時(shí)、準(zhǔn)確地預(yù)測(cè)轉(zhuǎn)向系統(tǒng)的靜動(dòng)態(tài)性能,從而為轉(zhuǎn)向系統(tǒng)的調(diào)試節(jié)省時(shí)間,還可以通過仿真分析更加深入地了解所設(shè)計(jì)轉(zhuǎn)向系統(tǒng)的各項(xiàng)性能。 本論文首先分析了雙向緩沖負(fù)荷傳感大流量放大全液壓轉(zhuǎn)向系統(tǒng)的工作原理及系統(tǒng)的元件組成。運(yùn)用流量連續(xù)方程和力平衡方程建立了液壓轉(zhuǎn)向系統(tǒng)的靜態(tài)和動(dòng)態(tài)數(shù)學(xué)模型,并進(jìn)行了系統(tǒng)的靜態(tài)特性分析。在液壓轉(zhuǎn)向系統(tǒng)動(dòng)態(tài)數(shù)學(xué)模型的基礎(chǔ)上,根據(jù)系統(tǒng)的工作原理,在具有液壓專業(yè)特點(diǎn)的MSC.Easy5仿真軟件中,建立了各個(gè)元器件的仿真模型,并根據(jù)各組成部分的關(guān)系建立了整個(gè)轉(zhuǎn)向系統(tǒng)的仿真模型。在輸入轉(zhuǎn)向階躍信號(hào)下,仿真分析雙向緩沖負(fù)荷傳感大流量放大全液壓轉(zhuǎn)向系統(tǒng)的動(dòng)態(tài)特性。根據(jù)仿真分析的結(jié)論提出轉(zhuǎn)向器的結(jié)構(gòu)優(yōu)化方案,并將結(jié)構(gòu)優(yōu)化后的樣機(jī)實(shí)測(cè)實(shí)驗(yàn)性能參數(shù)與結(jié)構(gòu)優(yōu)化后的仿真性能參數(shù)對(duì)比分析。 結(jié)果表明,該轉(zhuǎn)向系統(tǒng)可以使轉(zhuǎn)向器輸出流量放大4倍,并且具有雙向緩沖和轉(zhuǎn)向穩(wěn)定的良好性能。這些仿真分析結(jié)論對(duì)進(jìn)一步的產(chǎn)品升級(jí)和優(yōu)化設(shè)計(jì)具有非常重要的指導(dǎo)意義和參考價(jià)值。
[Abstract]:As a full-power steering gear with high output power, full-hydraulic steering gear is widely used in large-scale construction machinery. The traditional steering gear which depends on increasing the internal flow passage area to improve the displacement is too large in volume and inconvenient to install. However the coaxial flow amplification steering gear with the function of flow amplification still has the problem of steering shock vibration and the flow amplification ratio is not high enough at the same time. A new type of full hydraulic steering gear is designed to solve the above problems. The steering system composed of the steering gear has the advantages of large displacement, high power and stable steering. In order to further optimize the static and dynamic performance of the steering system, the static and dynamic performance of the steering system is simulated and analyzed, and the improved design measures and structural scheme of the steering gear are put forward. At present, it is economical, effective and practical to study the static and dynamic characteristics of hydraulic steering system. The simulation analysis of static and dynamic characteristics of hydraulic steering system can effectively shorten the design cycle, avoid repeated tests and processing, and thus reduce the cost. At the same time, the static and dynamic performance of the steering system can be predicted in time and accurately in the design stage, thus saving time for the debugging of the steering system, and the performance of the steering system can be further understood through simulation analysis. In this paper, the principle and components of the full hydraulic steering system with bidirectional buffering load sensing and large flow amplification are analyzed. The static and dynamic mathematical models of the hydraulic steering system are established by using the flow continuity equation and the force balance equation, and the static characteristics of the system are analyzed. On the basis of the dynamic mathematical model of hydraulic steering system, according to the working principle of the system, the simulation model of each component is established in the MSC.Easy5 simulation software with hydraulic specialty characteristics. The simulation model of the whole steering system is established according to the relation of each component. Under the input steering step signal, the dynamic characteristics of a bidirectional buffer load sensing and amplifying full hydraulic steering system are simulated and analyzed. According to the conclusion of simulation analysis, the structure optimization scheme of steering gear is put forward, and the measured experimental performance parameters after structural optimization are compared with the simulation performance parameters after structural optimization. The results show that the steering system can amplify the output flow of the steering gear by 4 times and has good performance of bidirectional buffering and steering stability. These conclusions of simulation analysis have very important guiding significance and reference value for further product upgrading and optimization design.
【學(xué)位授予單位】：華東交通大學(xué)
【學(xué)位級(jí)別】：碩士
【學(xué)位授予年份】：2011
【分類號(hào)】：TH137

【參考文獻(xiàn)】

相關(guān)期刊論文 前10條

1 馮海明;鍵合圖在液壓系統(tǒng)建模和仿真中的應(yīng)用[J];北京工業(yè)職業(yè)技術(shù)學(xué)院學(xué)報(bào);2002年01期

2 羅勇;工程模塊化建模在電廠仿真的運(yùn)用[J];江西電力職業(yè)技術(shù)學(xué)院學(xué)報(bào);2004年01期

3 崔勝民;鉸接轉(zhuǎn)向工程機(jī)械動(dòng)態(tài)數(shù)學(xué)模型的建立[J];工程機(jī)械;1991年05期

4 王浩孚,張榮昌;流量放大閥放大特性的探討[J];工程機(jī)械;1993年08期

5 黃振德,李福榮,吳繼飛;同軸流量放大器及其應(yīng)用[J];工程機(jī)械;1999年12期

6 裴蘭華;全液壓轉(zhuǎn)向器及其應(yīng)用[J];工程機(jī)械與維修;1996年01期

7 張愛武,張金偉;工程機(jī)械的液壓轉(zhuǎn)向系統(tǒng)分析[J];工程機(jī)械與維修;1999年12期

8 吳繼飛,李福榮;國內(nèi)外大排量全液壓轉(zhuǎn)向器技術(shù)水平對(duì)比[J];工程機(jī)械與維修;2001年01期

9 王同建,張子達(dá),劉昕暉,羅士軍;全液壓轉(zhuǎn)向器數(shù)學(xué)模型的建立與仿真[J];機(jī)床與液壓;2005年08期

10 裘俊紅，胡上序，龔建平;模塊化建模和仿真技術(shù)及對(duì)常壓蒸餾的實(shí)時(shí)穩(wěn)態(tài)仿真[J];計(jì)算機(jī)工程與應(yīng)用;1995年06期

相關(guān)碩士學(xué)位論文 前5條

1 荊小懷;裝載機(jī)液壓轉(zhuǎn)向系統(tǒng)的數(shù)字仿真與特性分析[D];吉林大學(xué);2004年

2 寧悅;裝載機(jī)流量放大轉(zhuǎn)向系統(tǒng)特性研究[D];吉林大學(xué);2006年

3 雷軍波;全液壓轉(zhuǎn)向系統(tǒng)的靜動(dòng)態(tài)理論建模仿真研究[D];華僑大學(xué);2006年

4 王磊;液壓支架液壓系統(tǒng)的仿真研究[D];山東科技大學(xué);2009年

5 陸倩倩;流量放大全液壓轉(zhuǎn)向系統(tǒng)的仿真分析及試驗(yàn)[D];浙江大學(xué);2010年

，

本文編號(hào)：2314420