可独立调节的四通电液比例插装集成单元及其应用

发布时间：2018-04-10 22:12

本文选题：二通插装阀 + MINISO标准　；参考：《浙江大学》2012年硕士论文

【摘要】：液压控制回路有双负载腔联动式控制、单负载腔联动式控制和单负载腔独立式控制三种方式。单负载腔独立式控制回路遵循了一个基本的组合原则：最少液阻原则。可以概括为：在采用通过调整液流阻力进行流量控制的“控制液压传动”中,全部可控执行器的“受控腔”控制回路都可以通过最少或较少的液阻来加以组成。这应当成为评价液压控制回路和系统设计合理性的基本原则之一。单负载腔独立式控制回路的基本控制元件是二通插装阀。由于比例控制技术、伺服控制技术及数字控制技术等与二通插装技术相结合,二通插装阀的性能得到了很大的提高,但现有市售的国内外二通插装阀产品,安装孔符合IS07368标准,主要应用于大中功率或称为高压大流量的液压传动与控制中。实际上,二通插装阀还具有在中小功率液压控制中被大量应用,尤其是在采用集成化连接时被大量采用的很大潜力和空间。其技术关键在于急需对现有的二通插装阀市售产品进行规模性和整体性的重组和结构创新。为此,上海人豪液压集成开发室总设计师黄人豪先生提出了MINISO型二通插装阀,包括小型化和小规格的先导控制阀、组合式法兰控制盖板、小型化主级及其模块化组合等主要内容。通过学习MINISO标准,论文设计了16通径的MINISO型位移—力反馈比例节流阀、MINISO型位移—力反馈单向比例节流阀和MINISO型间接检测式比例压力阀。文中分析了每个MINISO阀的基本结构、工作原理和设计计算；其后,建立每个MINISO阀的数学模型,利用专业的液压仿真软件AMESim对设计参数进行优化；优化后,使用SolidWorks软件设计MINISO阀的三维视图,使用AutoCAD软件绘制零件图和装配图,然后制定工艺并送厂加工；加工和装配完成后,对MINISO型比例节流阀和比例压力阀进行了性能测试试验,包括动态和静态试验,验证了MINISO标准的可行性。最后设计了基于MINISO标准的四通集成块,与两个单向比例节流阀和两个比例压力阀构成可独立调节的四通电液比例插装集成单元,对挖掘机动臂油缸进行单负载腔的独立式控制,实现了在主泵卸荷卸流的情况下,动臂下降过程中的负负载流量再生。
[Abstract]:There are three types of hydraulic control loop: dual load cavity linkage control, single load cavity linkage control and single load cavity independent control.The single-load cavity independent control loop follows a basic combination principle: the principle of minimum liquid resistance.It can be concluded that in the "controlled hydraulic transmission" which is controlled by adjusting the flow resistance, the "controlled cavity" control loop of all controllable actuators can be made up of the least or less liquid resistance.This should be one of the basic principles for evaluating the rationality of hydraulic control circuit and system design.The basic control element of single-load cavity independent control loop is two-way cartridge valve.Because of the combination of proportional control technology, servo control technology and digital control technology, the performance of two-way cartridge valve has been greatly improved. However, the installation hole of domestic and foreign two-way cartridge valve products is in line with IS07368 standard.Mainly used in large and medium power or called high pressure and large flow hydraulic transmission and control.In fact, the two-way cartridge valve also has the great potential and space to be widely used in medium and small power hydraulic control, especially in the use of integrated connection.The technical key lies in the urgent need to restructure and innovate the existing two-way cartridge valve market products on a scale and integrity basis.For this reason, Mr. Huang Renhao, chief designer of Shanghai Renhao hydraulic Integrated Development Room, has proposed MINISO two-way cartridge valves, including miniaturized and small-size pilot control valves, combined flange control covers,Miniaturization of the principal stage and its modular combination and other main contents.By studying the MINISO standard, the paper designs MINISO displacement force feedback proportional throttle valve with 16 diameter and MINISO indirect detection proportional pressure valve with displacement-force feedback one-way proportional throttle valve.In this paper, the basic structure, working principle and design calculation of each MINISO valve are analyzed. Then, the mathematical model of each MINISO valve is established, and the design parameters are optimized by using the professional hydraulic simulation software AMESim.Using SolidWorks software to design 3D view of MINISO valve, using AutoCAD software to draw part drawing and assembly drawing, and then working out the process and sending it to the factory for processing. After processing and assembling, the performance tests of MINISO proportional throttle valve and proportional pressure valve are carried out.The feasibility of MINISO standard is verified by both dynamic and static tests.Finally, a four-way integrated block based on MINISO standard is designed, which is composed of two unidirectional proportional throttle valves and two proportional pressure valves. The four-way electro-hydraulic proportional interpolation and integration unit can be adjusted independently, and the single load cavity of the excavator arm oil cylinder is controlled independently.Under the condition of the main pump unloading and unloading, the negative carrier flow regeneration is realized during the falling of the arm.
【学位授予单位】：浙江大学
【学位级别】：硕士
【学位授予年份】：2012
【分类号】：TH137

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