Abstract
As China's construction machinery excavator main models have been widely used in a variety of construction operations. Excavator product's core technology is the excavator as a result of poor working conditions, requested action to achieve the complexity of its implementation of the system so the design of high demands, the implementation of systems engineering machinery hydraulic system is the most complex. Therefore, the analysis of excavator hydraulic system design in promoting the development of China's excavator of great significance. Excavator at home and abroad in gathering relevant information to implement the system on the basis of the excavator about the history of the development of the implementation of the system and execution system excavator dynamics of technology development has been analyzed and summarized. Papers on a variety of excavators working condition were analyzed, the system summed up the excavator's hydraulic system design requirements. Excavator system in accordance with the implementation of the design requirements, the use of paper in general multi-way valve, with special control valves and a simple electronic control system, design a set for my LS produced constant power control system of hydraulic shovels. The graduation project is the subject of the implementation of mechanism design excavator. Mini-excavator from multiple systems, including hydraulic system, transmission system, control system, the working devices, chassis, turntable, fuel tanks, engine installation. I focused on the design of the analysis and design of small hydraulic excavator design implementation. Select the topics of domestic quality and technical performance are close to the design requirements of 16 ~ 20t excavator as the base type, and on this basis to study abroad, advanced models, design of hydraulic excavators of our system side by map general assembly drawing and the corresponding parts diagram and parts diagram. The use of Auto CAD drawings of the basic two-dimensional graphics software.
Key words:Construction machinery excavator; Actuators; Ssterm