5吨装载机用多路阀的优化设计与开发
发布时间：2019-05-19 23:46
【摘要】：装载机液压系统是装载机最关键的系统,而装载机用多路换向阀则是整个液压系统的最关键元件；本文根据国内装载机液压系统的技术指标及对多路阀换向阀的要求,设计开发了一款应用于国内5吨装载机液压系统的多路换向阀,对其功能和工作原理进行了分析及理论计算,确定了产品的主要尺寸及参数。 本文利用数值模拟这一先进的设计手段和功能强大的流体仿真软件COSMOSFloworks对阀体流道结构进行了基于流场仿真的优化分析,以计算流体动力学(CFD)理论为基础建立了适合多路阀压力损失、流速、流动研究的数值分析模型,并通过仿真数据与试验数据的分析比较,验证了分析模型的合理性和仿真方法的正确性,为同类产品的优化开发探索了一个可行的途径。 本文基于流场仿真,对两种非全周开口的节流槽的压力流量特性、流速流动状态进行了研究分析对比,并与理论计算及试验数据进行了分析对比； 本文基于有限元分析软件COSMOSWORKS,对阀体进行了强度、应力、变形以及安全系数优化分析,对疲劳寿命进行了分析研究。 本文对仿真分析结果采用先进的计算机测量测试技术进行了技术性能、微动特性、瞬态特性、可靠性寿命进行了试验验证,一方面考核了产品的各项技术指标,另一方面对仿真计算进行了验证分析对比。
[Abstract]:The hydraulic system of the loader is the most critical system of the loader, and the multi-way directional valve used in the loader is the most key component of the whole hydraulic system. According to the technical index of hydraulic system of domestic loader and the requirement of multi-valve directional valve, a multi-way directional valve applied to the hydraulic system of domestic 5-ton loader is designed and developed in this paper. The function and working principle of the product are analyzed and calculated theoretically, and the main dimensions and parameters of the product are determined. In this paper, numerical simulation is used as an advanced design method and powerful fluid simulation software COSMOSFloworks to optimize the flow channel structure of valve body based on flow field simulation. Based on the (CFD) theory of computational fluid dynamics, a numerical analysis model suitable for the study of pressure loss, velocity and flow of multi-channel valves is established, and the simulation data are compared with the experimental data. The rationality of the analysis model and the correctness of the simulation method are verified, and a feasible way for the optimal development of the same kind of products is explored. In this paper, based on the flow field simulation, the pressure and flow characteristics and velocity flow state of two kinds of throttle with non-full cycle opening are studied and compared, and compared with the theoretical calculation and experimental data. In this paper, the strength, stress, deformation and safety factor of the valve body are optimized based on the finite element analysis software COSMOSWORKS, and the fatigue life is analyzed and studied. In this paper, the simulation results are verified by advanced computer measurement and testing technology, such as technical performance, fretting characteristics, transient characteristics and reliability life. On the one hand, the technical indexes of the product are evaluated. On the other hand, the simulation calculation is verified and compared.
【学位授予单位】：山东大学
【学位级别】：硕士
【学位授予年份】：2012
【分类号】：TH243
本文编号：2481167
[Abstract]:The hydraulic system of the loader is the most critical system of the loader, and the multi-way directional valve used in the loader is the most key component of the whole hydraulic system. According to the technical index of hydraulic system of domestic loader and the requirement of multi-valve directional valve, a multi-way directional valve applied to the hydraulic system of domestic 5-ton loader is designed and developed in this paper. The function and working principle of the product are analyzed and calculated theoretically, and the main dimensions and parameters of the product are determined. In this paper, numerical simulation is used as an advanced design method and powerful fluid simulation software COSMOSFloworks to optimize the flow channel structure of valve body based on flow field simulation. Based on the (CFD) theory of computational fluid dynamics, a numerical analysis model suitable for the study of pressure loss, velocity and flow of multi-channel valves is established, and the simulation data are compared with the experimental data. The rationality of the analysis model and the correctness of the simulation method are verified, and a feasible way for the optimal development of the same kind of products is explored. In this paper, based on the flow field simulation, the pressure and flow characteristics and velocity flow state of two kinds of throttle with non-full cycle opening are studied and compared, and compared with the theoretical calculation and experimental data. In this paper, the strength, stress, deformation and safety factor of the valve body are optimized based on the finite element analysis software COSMOSWORKS, and the fatigue life is analyzed and studied. In this paper, the simulation results are verified by advanced computer measurement and testing technology, such as technical performance, fretting characteristics, transient characteristics and reliability life. On the one hand, the technical indexes of the product are evaluated. On the other hand, the simulation calculation is verified and compared.
【学位授予单位】：山东大学
【学位级别】：硕士
【学位授予年份】：2012
【分类号】：TH243
【引证文献】
相关硕士学位论文 前1条
1 牛宏杰;装载机多路阀与先导阀匹配方法研究[D];吉林大学;2013年
，本文编号：2481167
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