ZL50裝載機(jī)液壓系統(tǒng)設(shè)計(jì)

機(jī)械論文編號(hào):JX394  論文字?jǐn)?shù):12648.頁(yè)數(shù):24

目 錄
1 緒論 1
2 裝載機(jī)傳動(dòng)系統(tǒng)分析 1
2.1 液壓傳動(dòng)系統(tǒng)的要求 1
2.2傳統(tǒng)的裝載機(jī)液壓糸統(tǒng) 2
2.2.1機(jī)械傳動(dòng)系統(tǒng) 2
2.2.2液力傳動(dòng)系統(tǒng) 3
2.2.3液壓傳動(dòng)系統(tǒng) 3
2.3液壓裝載機(jī)的總體構(gòu)成 4
2.3.1 裝載機(jī)液壓系統(tǒng)的基本構(gòu)成 4
2.3.2 ZL50裝載機(jī)液壓系統(tǒng)框圖 5
2.3.3 裝載機(jī)液壓行走系統(tǒng)的構(gòu)成 6
2.4工程機(jī)械中液壓傳動(dòng)的特點(diǎn) 8
3 裝載機(jī)設(shè)計(jì)的主要技術(shù)參數(shù) 9
4 裝載機(jī)液壓系統(tǒng)設(shè)計(jì) 10
4.1 裝載機(jī)工況分析、確定液壓系統(tǒng)的主要參數(shù) 10
4.1.1 執(zhí)行機(jī)構(gòu)的載荷組成與計(jì)算 10
4.1.2 初選系統(tǒng)工作壓力 13
4.1.3 計(jì)算液壓缸和液壓馬達(dá)所需要流量 13
4.2 制定基本方案和繪制液壓系統(tǒng)圖 13
4.2.1 制定系統(tǒng)方案 13
4.2.2 繪制液壓系統(tǒng)圖 14
4.2.3 液壓系統(tǒng)工作原理 15
5 液壓元件的選擇與專用件設(shè)計(jì) 17
5.1 液壓泵的選擇 17
5.2 確定液壓泵的驅(qū)動(dòng)功率 18
5.3 液壓閥的選擇 19
5.4 液壓油管設(shè)計(jì) 19
5.5 油箱容量的確定 19
結(jié)束語(yǔ) 20
謝辭 21
參考文獻(xiàn) 22

摘要
裝載機(jī)是一種作業(yè)效率高、機(jī)動(dòng)靈活、用途廣泛的工程機(jī)械，作業(yè)工況復(fù)雜多變，負(fù)荷變化頻繁、變化范圍大。如何最簡(jiǎn)單而又適宜地使發(fā)動(dòng)機(jī)和傳動(dòng)系統(tǒng)同外部負(fù)荷之間始終保持最合理的匹配，一直是裝載機(jī)傳動(dòng)系統(tǒng)長(zhǎng)期以來存在的問題。本論文以 ZL50 裝載機(jī)為對(duì)象，對(duì)其行液壓傳動(dòng)系統(tǒng)進(jìn)行設(shè)計(jì)計(jì)算，并對(duì)液壓系統(tǒng)各參數(shù)進(jìn)行了合理的選擇計(jì)算。
由于我們采用液壓傳動(dòng)，使系統(tǒng)不僅具有良好的無級(jí)調(diào)速性能和靈活布局的特點(diǎn)，而且可以進(jìn)行多種多樣的調(diào)節(jié)和控制。特別是采用了比例控制閥，使其與計(jì)算機(jī)控制技術(shù)相結(jié)合，可以實(shí)現(xiàn)裝載機(jī)等工程機(jī)械智能化、節(jié)能化、環(huán)�；�。

關(guān)鍵詞： 液壓系統(tǒng)   裝載機(jī)   液控元件  
Abstract：
Loader is a high operating efficiency and flexibility, uses a wide range of engineering machinery, complex and ever-changing operating conditions, load changes frequently, changes in range. How the most simple and appropriate to make the engine and drive system with the external load is always maintained between the most reasonable match, has been a long time loader transmission problem. In this paper, ZL50 loader for the object to its line of hydraulic drive system design, the hydraulic system and the parameters of the calculation of a reasonable choice.
Because we use hydraulic transmission, the system not only has good performance and flexibility of stepless speed regulation characteristics of the layout, but can a wide range of adjustment and control. In particular the use of a proportional control valve to make it compatible with computer control technology, can be achieved, such as construction machinery loader intelligent, energy-saving and environmental protection.

Key words：Hydraulic System   Loader   Fluid control components