液压轮式装载机传动系统性能研究
发布时间：2019-07-03 13:28
【摘要】：液压驱动装载机在自动控制，系统结构，动力性等诸多方面相比传统驱动方式的装载机具有很大优势。液压装载机在国外已经得到较好的应用，而在国内的研究最近几年才受到重视。 本文首先分析了装载机的行走系统负荷特点和发动机工作特点，提出了发动机与外负荷的匹配方案，而且提出了装载机两种工作模式；接着本文提出了在作业工况进行泵的恒功率控制、马达的高压自动变量控制以及泵的变功率控制互相配合的控制方案，而在启动阶段采用转速液压控制策略，并提出了应对发动机超载的控制策略；然后，本文进行了液压装载机驱动系统参数的匹配和校核，给出了参数匹配原则。并结合参数和控制理论估算了液压驱动装载机在工作阶段的传动效率，证明了本文控制策略在系统经济性方面也是合理的；最后本文采用液压仿真软件结合参数匹配结果，，对系统的控制策略进行仿真，证明了本文提出的控制策略的可行性。对静液压驱动车辆的研究具有一定的借鉴意义。
[Abstract]:Hydraulic drive loader has great advantages over traditional drive loader in many aspects, such as automatic control, system structure, power and so on. Hydraulic loaders have been well applied abroad, but the domestic research has only been paid attention to in recent years. In this paper, the load characteristics of the walking system and the working characteristics of the engine are analyzed, the matching scheme between the engine and the external load is put forward, and two working modes of the loader are put forward. Then this paper puts forward the control scheme of constant power control of pump, high pressure automatic variable control of motor and variable power control of pump in working condition, and adopts the hydraulic control strategy of rotating speed in the starting stage, and puts forward the control strategy to deal with engine overload. Then, this paper carries on the matching and checking of the parameters of the driving system of hydraulic loader, and gives the principle of parameter matching. Combined with the parameter and control theory, the transmission efficiency of the hydraulic drive loader in the working stage is estimated, which proves that the control strategy in this paper is also reasonable in the system economy. Finally, the hydraulic simulation software combined with the parameter matching results is used to simulate the control strategy of the system, which proves the feasibility of the control strategy proposed in this paper. It has certain reference significance for the research of hydrostatic driven vehicle.
【学位授予单位】：长安大学
【学位级别】：硕士
【学位授予年份】：2012
【分类号】：TH243
本文编号：2509428
[Abstract]:Hydraulic drive loader has great advantages over traditional drive loader in many aspects, such as automatic control, system structure, power and so on. Hydraulic loaders have been well applied abroad, but the domestic research has only been paid attention to in recent years. In this paper, the load characteristics of the walking system and the working characteristics of the engine are analyzed, the matching scheme between the engine and the external load is put forward, and two working modes of the loader are put forward. Then this paper puts forward the control scheme of constant power control of pump, high pressure automatic variable control of motor and variable power control of pump in working condition, and adopts the hydraulic control strategy of rotating speed in the starting stage, and puts forward the control strategy to deal with engine overload. Then, this paper carries on the matching and checking of the parameters of the driving system of hydraulic loader, and gives the principle of parameter matching. Combined with the parameter and control theory, the transmission efficiency of the hydraulic drive loader in the working stage is estimated, which proves that the control strategy in this paper is also reasonable in the system economy. Finally, the hydraulic simulation software combined with the parameter matching results is used to simulate the control strategy of the system, which proves the feasibility of the control strategy proposed in this paper. It has certain reference significance for the research of hydrostatic driven vehicle.
【学位授予单位】：长安大学
【学位级别】：硕士
【学位授予年份】：2012
【分类号】：TH243
【参考文献】
相关期刊论文 前10条
1 张京明,赵桂范,姜立标;发动机特性计算模型在整车性能计算中的应用[J];车用发动机;2000年03期
2 孙祖望 ,孙树仁 ,李太杰 ,陈宜俊 ,张义甫;履带推土机牵引动力学的试验研究[J];工程机械;1983年02期
3 宋玉中 ,诸文农 ,许纯新;轮式装载机动态性能试验研究[J];工程机械;1987年01期
4 张云龙,诸文农,许纯新;装载机传动系载荷样本长度的确定[J];工程机械;1994年06期
5 李孝明;浅谈我国装载机的发展[J];工程机械;1999年01期
6 黄旭就,谢萍;柳工ZL50G型轮式装载机[J];工程机械;2003年04期
7 李志勇;静液压传动装载机[J];工程机械与维修;1999年04期
8 杨一岳,金山;静液压传动轮式装载机发展概况[J];工程机械与维修;1998年12期
9 战兴群,张炎华,赵克定;二次调节扭矩加载系统动态特性的研究[J];中国工程科学;2000年07期
10 乔现云;静液压传动轮式装载机的发展前景[J];港口装卸;1999年03期
相关硕士学位论文 前4条
1 陈超;工程车辆液压驱动非线性系统控制策略与仿真研究[D];长安大学;2005年
2 贾海波;轮式装载机传动系载荷谱测试与编制方法研究[D];吉林大学;2009年
3 刘少辉;某型装载机液压系统载荷谱的编制[D];集美大学;2009年
4 袁江;小功率全液压平地机行驶驱动系统研究[D];长安大学;2009年
本文编号：2509428
本文链接：https://www.wllwen.com/kejilunwen/jixiegongcheng/2509428.html
