A11VO型轴向柱塞泵动态特性研究
发布时间：2018-09-03 07:17
【摘要】：液压传动与控制技术是一种以液体为介质，利用液体的压力能来传递动力的工业控制技术。在液压系统中，其“心脏”为动力元件泵，与其他容积式的各类泵相比，斜盘式轴向变量柱塞泵由于其体积小、效率高、结构紧凑、容易实现无级调节等诸多优点而广泛地应用各工业领域中。现代工业的高速发展对轴向变量柱塞泵的性能要求越来越高。我国对柱塞泵的研究起步较晚，同时由于制造工艺上的限制，因此在对柱塞泵的研究与制造方面与美国，德国，日本等国家的先进水平有一定的差距。在分析国内外现状基础上，论文以斜盘式轴向柱塞泵为研究对象，从液压系统的层次上对其进行了理论分析与仿真研究。 主要内容如下： 第一章，阐述了本课题发展趋势和国内外研究现状以及研究的内容和意义。 第二章，首先对圆柱形缸体和圆锥形缸体的斜盘式轴向柱塞泵的柱塞进行了运动学分析，分别得出了相同工况下两种不同类型缸体柱塞的几何运动规律，缸体的倾角度对单柱塞瞬时流量脉动特性的影响，以及不同斜盘角度下流量脉动系数的变化规律。其次运用力学基本原理对锥形缸体斜盘式柱塞泵的关键部件如中心加力弹簧、柱塞与滑靴的受力状况进行了较详细分析，为后面章节中对锥形缸体斜盘式柱塞泵的动态研究提供了必要的理论依据和重要参考。 第三章，对斜盘式轴向柱塞泵整个系统进行子系统划分，然后从流量连续性方程，伯努力方程以及牛顿力学定理等出发，充分考虑轴向柱塞泵的泄漏，摩擦以及容积效应，，对轴向柱塞泵各个子系统模块进行数学理论分析，建立子系统及斜盘式轴向柱塞泵的理论数学模型。 第四章，在理论数学模型的基础上，建立斜盘式轴向柱塞泵的AMESim仿真模型，对其进行动态仿真实验研究。论文主要对斜盘式轴向柱塞泵在压力控制状态，和压力流量控制状态下的脉动特性以及瞬态响应特性进行研究，着重研究了主要参数对脉动以及瞬态响应的影响。 第五章，利用有限元软件ANSYS-Workbench对斜盘式轴向柱塞泵中的主轴进行模态分析和谐振分析，以避免径向方向柱塞泵在工作中出现共振现象，完成泵轴谐振分析，得到交变载荷作用下泵轴的谐响应规律。
[Abstract]:Hydraulic transmission and control technology is a kind of industrial control technology which uses liquid as medium and uses the pressure energy of liquid to transfer power. In hydraulic system, its "heart" is a power component pump. Compared with other kinds of displacement pumps, the oblique disc axial variable piston pump is compact because of its small volume, high efficiency and compact structure. Easy to realize stepless regulation and many other advantages and widely used in various industrial fields. With the rapid development of modern industry, the performance of axial variable piston pump is becoming more and more important. The research of piston pump in our country started late, and because of the limitation of manufacturing technology, there is a certain gap between the research and manufacture of piston pump and the advanced level of the United States, Germany, Japan and other countries. Based on the analysis of the present situation at home and abroad, the paper takes the oblique disc axial piston pump as the research object, carries on the theoretical analysis and the simulation research from the hydraulic system level. The main contents are as follows: in the first chapter, the development trend of this subject, the current research situation at home and abroad, and the content and significance of the research are described. In the second chapter, the kinematics of the plunger of the inclined disc axial piston pump of cylinder block and conical cylinder is analyzed, and the geometric motion laws of two different types of cylinder plunger under the same working condition are obtained respectively. The influence of the tilting angle of the cylinder block on the transient flow pulsation characteristics of a single plunger and the variation of the flow pulsation coefficient under different inclined disc angles. Secondly, the key components of the tapered cylinder inclined disc piston pump, such as the central force spring, the plunger and the sliding boots, are analyzed in detail by using the basic principles of mechanics. It provides the necessary theoretical basis and important reference for the dynamic research of the tapered cylinder oblique disc piston pump in the following chapters. In the third chapter, the whole system of oblique disc axial piston pump is divided into subsystems, and then the leakage, friction and volume effect of axial piston pump are fully considered from the flow continuity equation, Burroughs equation and Newtonian mechanics theorem. The mathematical models of each subsystem module of axial piston pump are analyzed and the theoretical models of the subsystem and the inclined disc axial piston pump are established. In chapter 4, based on the theoretical mathematical model, the AMESim simulation model of oblique disc axial piston pump is established, and the dynamic simulation experiment is carried out. In this paper, the pulsation characteristics and transient response characteristics of oblique disc axial piston pump under pressure control state and pressure flow control state are studied, and the influence of main parameters on pulsation and transient response is emphatically studied. In chapter 5, the modal analysis and resonance analysis of the spindle in the axial piston pump are carried out by using the finite element software ANSYS-Workbench, so as to avoid the resonance phenomenon in the work of the radial piston pump, and complete the resonance analysis of the shaft of the pump. The harmonic response of pump shaft under alternating load is obtained.
【学位授予单位】：兰州理工大学
【学位级别】：硕士
【学位授予年份】：2012
【分类号】：TH322
本文编号：2219299
[Abstract]:Hydraulic transmission and control technology is a kind of industrial control technology which uses liquid as medium and uses the pressure energy of liquid to transfer power. In hydraulic system, its "heart" is a power component pump. Compared with other kinds of displacement pumps, the oblique disc axial variable piston pump is compact because of its small volume, high efficiency and compact structure. Easy to realize stepless regulation and many other advantages and widely used in various industrial fields. With the rapid development of modern industry, the performance of axial variable piston pump is becoming more and more important. The research of piston pump in our country started late, and because of the limitation of manufacturing technology, there is a certain gap between the research and manufacture of piston pump and the advanced level of the United States, Germany, Japan and other countries. Based on the analysis of the present situation at home and abroad, the paper takes the oblique disc axial piston pump as the research object, carries on the theoretical analysis and the simulation research from the hydraulic system level. The main contents are as follows: in the first chapter, the development trend of this subject, the current research situation at home and abroad, and the content and significance of the research are described. In the second chapter, the kinematics of the plunger of the inclined disc axial piston pump of cylinder block and conical cylinder is analyzed, and the geometric motion laws of two different types of cylinder plunger under the same working condition are obtained respectively. The influence of the tilting angle of the cylinder block on the transient flow pulsation characteristics of a single plunger and the variation of the flow pulsation coefficient under different inclined disc angles. Secondly, the key components of the tapered cylinder inclined disc piston pump, such as the central force spring, the plunger and the sliding boots, are analyzed in detail by using the basic principles of mechanics. It provides the necessary theoretical basis and important reference for the dynamic research of the tapered cylinder oblique disc piston pump in the following chapters. In the third chapter, the whole system of oblique disc axial piston pump is divided into subsystems, and then the leakage, friction and volume effect of axial piston pump are fully considered from the flow continuity equation, Burroughs equation and Newtonian mechanics theorem. The mathematical models of each subsystem module of axial piston pump are analyzed and the theoretical models of the subsystem and the inclined disc axial piston pump are established. In chapter 4, based on the theoretical mathematical model, the AMESim simulation model of oblique disc axial piston pump is established, and the dynamic simulation experiment is carried out. In this paper, the pulsation characteristics and transient response characteristics of oblique disc axial piston pump under pressure control state and pressure flow control state are studied, and the influence of main parameters on pulsation and transient response is emphatically studied. In chapter 5, the modal analysis and resonance analysis of the spindle in the axial piston pump are carried out by using the finite element software ANSYS-Workbench, so as to avoid the resonance phenomenon in the work of the radial piston pump, and complete the resonance analysis of the shaft of the pump. The harmonic response of pump shaft under alternating load is obtained.
【学位授予单位】：兰州理工大学
【学位级别】：硕士
【学位授予年份】：2012
【分类号】：TH322
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