摘要：本文主要对小型挖掘机液压系统的设计进行了阐述。
Abstract: this paper mainly on small sized excavator hydraulic system design is discussed in this paper.
分析了挖掘机液压系统故障诊断研究中的几个关键问题，提出了挖掘机液压系统故障诊断研究策略。
Based on theory research, simulation modeling and experiment, fault detection and diagnosis approaches for the excavator's hydraulic system are systematically studied in this paper.
研究了挖掘机液压系统远程故障诊断的实现技术；提出了基于虚拟仪器的故障诊断系统的网络化实现方案。
This paper provided a remote fault diagnosis system for excavator hydraulic system based on network and virtual instrument technology.
试验证明，这些措施的采用，不仅提高了液压系统效率，而且使挖掘机的操纵性得到明显提高。
It has been proved in experiments that these methods not only improve the efficiency of the hydraulic system, but also the controllability of excavator.
运用CAD软件绘制了液压系统原理图，油缸零件图和小型挖掘机的总体装配图。
Using CAD software to draw a diagram of hydraulic system, hydraulic cylinder part drawing and assembly drawing of small excavator overall.
特雷克斯采矿设备部门生产世界最大的液压挖掘机、托运卡车、钻机和高壁采矿系统。
The mining equipment business of Terex produces the world's largest hydraulic excavators, rugged haul trucks, advanced drilling machines, and highwall mining systems.
为了提高液压挖掘机混合动力系统的效率，提出了一种对其动力系统进行优化的参数匹配方法。
In order to improve the efficiency of hybrid power system applied in hydraulic excavator, a parameter matching method was developed to optimize the power system.
本文介绍用微机控制液压挖掘机作业运动的原理、控制模型、系统软件以及试验台试验结果。
The principle, mathematical model, system software of a hydraulic excavator with micro computer controlled digging movement and it's bench test results are introduced in this paper.
用于JY320型液压挖掘机等的双泵双回路高压变量系统。
It is used in double pumps and circuits high pressure variable system on model JY320 hydraulic excavator.
以此提高液压挖掘机的工作效率和能量利用率，节省能源，减少发热，降低冷却系统负荷。
The machine is enabled to raise efficiency and effective rate of energy, to save power, to decrease created heat and load of the cooling system.
文章针对WLY202—CW全液压轮式挖掘机在运行初期所出现的液压先导系统特殊故障进行了分析，并依据分析结果顺利解决了因厂家制造缺陷所造成的该故障。
The paper a detail analysis on the fault occurred in the hydraulic guide system of WLY202-CW excavator. And fault treatment procedure and methods made on base of the analysis are also introduced.
该系统包括：数据控制装置30，设置在液压挖掘机1等的工程机械内，处理运行时间或日期与时刻；
The system includes: a data recording device (30) arranged in a construction machine such as a hydraulic shovel (1) and processing an operation time or date and time;
本文开发的故障诊断系统平台不仅可以用于回转装置液压马达的故障诊断，经拓展后还可用于挖掘机行走装置、工作装置液压系统。
The fault diagnosis system not only applies in the hydraulic motor of swivel gear but also in the running gear and working device of excavator after extending fault diagnosis system.
本文开发的故障诊断系统平台不仅可以用于回转装置液压马达的故障诊断，经拓展后还可用于挖掘机行走装置、工作装置液压系统。
The fault diagnosis system not only applies in the hydraulic motor of swivel gear but also in the running gear and working device of excavator after extending fault diagnosis system.
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