Analysis And Optimization Design Of Hydraulic Excavator Working Device Dynamic Simulation

As agricultural production has been more national attention, agricultural machinery has entered a stage of rapid development. Agricultural hydraulic excavator as part of agricultural machinery, which studies increasingly gained in importance month researchers.Hydraulic excavators are mainly used for agricultural production, rural construction,compared with conventional hydraulic excavator, and a continuation of the basic structure of agricultural excavator generic composition. But compared with the general excavator,the excavator has some advantages of small size, flexibility, suitability for rural farming characteristics. Working device as a core part of agricultural hydraulic excavator includes boom, arm, bucket, and the connecting parts cylinder.The working device of agricultural excavator works with other objects directly in contact, and its performance will directly determine the success or failure of equipment design. The more traditional design methods are used in current design of the hydraulic excavator, and this affects the quality and performance of equipment design, while increasing the workload of the designer to extend the design cycle. Aiming at this situation,the use of virtual prototyping technology to agricultural hydraulic excavator working device simulation, analysis of the movement of the device, the force, and to provide a basis for optimizing the design of the device. The main work is following as:(1)In-depth research and development present situation of agricultural mini excavator design was research and analysis, clearly understand the development process in the design problems of the excavator. For virtual prototyping technology development status and application of the status quote a brief introduction so that readers have a basic knowledge and understanding of virtual prototyping technology.(2)According to agricultural hydraulic excavator and design parameters proposed agricultural hydraulic excavator design, and each member carried out the design and size of the structure is determined. And by the use of CAD software, Pro/e 3D model of agricultural hydraulic excavator of each member, and the whole assembly were established.After the text of the motion simulation, stress analysis and optimization design of the boom laid the foundation.(3)The mathematical knowledge of kinematics and dynamics of agricultural hydraulic excavator was used to the analysis. Also the excavation and resistance of thebucket were analyzed and calculated.(4)By using ADAMS software, the movement of agricultural hydraulic excavator was modeled and simulated, and the motion curve of excavators is obtained; and by analyzing its situation of its force, the maximum stress situation is obtained.(5)Using ANSYS, optimization module for the boom of agricultural hydraulic excavator is analyzed.