發(fā)布時間：2018-06-15 00:41

  本文選題：轉(zhuǎn)向液壓系統(tǒng) + 傳熱　； 參考：《中南大學學報(自然科學版)》2016年05期

【摘要】：基于集中參數(shù)法建立裝載機液壓轉(zhuǎn)向系統(tǒng)的傳熱仿真模型,并對高速跑車試驗工況進行仿真分析。針對50型輪式裝載機幾種典型作業(yè)方式,對同軸流量放大轉(zhuǎn)向系統(tǒng)和流量放大轉(zhuǎn)向系統(tǒng)2種配置的裝載機利用傳熱模型分別進行熱平衡仿真計算,并計算2種轉(zhuǎn)向液壓系統(tǒng)的功率損失。研究結(jié)果表明:仿真與試驗結(jié)果一致,證明模型準確可信。目前裝載機熱平衡工業(yè)性試驗中普遍采用的I形鏟裝循環(huán)工況,并不是裝載機液壓系統(tǒng)最大熱負荷工況。同軸流量放大轉(zhuǎn)向液壓系統(tǒng)裝載機在T形作業(yè)中熱平衡溫度與環(huán)境溫差最高為74.3℃;流量放大轉(zhuǎn)向液壓系統(tǒng)裝載機在V形作業(yè)中熱平衡溫度與環(huán)境溫差最高為62.64℃。
[Abstract]:The heat transfer simulation model of hydraulic steering system of loader is established based on the lumped parameter method, and the simulation analysis of the test condition of high-speed sports car is carried out. Aiming at several typical operation modes of 50 type wheel loader, the heat balance simulation calculation of two kinds of loaders with coaxial flow amplifying steering system and flow amplifying steering system using heat transfer model is carried out respectively. The power loss of two steering hydraulic systems is calculated. The results show that the simulation results are consistent with the experimental results, and the model is accurate and reliable. At present, I type shovel cycle is widely used in industrial tests of thermal balance of loaders, which is not the maximum heat load condition of hydraulic system of loaders. The maximum difference between heat balance temperature and ambient temperature in T-shaped operation is 74.3 鈩，

本文編號：2019742