Abstract

In recent years, the excavator hydraulic systems, the literature is not uncommon, but most of

the content documents of a topic for research, systematic exposition of modern hydraulic
excavator hydraulic system of the paper is less, so the research and design of hydraulic excavator
system has important practical and theoretical significance.

Hydraulic excavator of this thesis outlines the history of technology and its current

developments in the foreign country, outlines the development trend of hydraulic excavators,
hydraulic excavators used this hydraulic circuit for a simple set and analysis, subject to design
small hydraulic excavator hydraulic system design and analysis, and by further calculation to
determine the need for complete selection of hydraulic components. AutoCAD drawing using
hydraulic system diagram, work tank assembly, hydraulic layout, tank parts diagram. Finally,
tests prove the feasibility of this design.

Keywords：Hydraulic System，Excavator