This project is a research on the electro-hydraulic integrated performance design methods and means of hydraulic excavators in the field of construction machinery, and belongs to the field of mechanical design principles and methods.
With the implementation of "Made in China 2025", digital and intelligent design of construction machinery products has become necessary. The project "Mechanical, Electrical and Hydraulic Integrated Performance Design Platform and Application for Hydraulic Excavators" follows the systematic product design methodology based on the premise of the overall system, and utilizes the rapid development of analytical technologies such as fluid, solid, and electromechanical coupling. The multidisciplinary integration of system design and control expression aims to integrate serial design under the guidance of the customized design method route for the overall performance of hydraulic excavators For coupling and conflict problems (between main systems and subsystems, between different media, between different physical fields, etc.), the "integrated design" method is used to expand the solution set space of design objects with specific matching object conditions, and a support has been built. A technical platform for innovative design of new products for large-scale construction machinery.
The "Mechanical, Electrical and Hydraulic Integrated Performance Design Platform and Application of Hydraulic Excavator" includes the "20-ton Excavator Parametric Analysis and Performance Simulation System" and the "20-ton Excavator Performance Test" in cooperation with Shanshi Machinery Co., Ltd. Two sub-projects. The "Mechanical, Electrical and Hydraulic Integrated Performance Design Platform and Application of Hydraulic Excavator" is an integration of the results of the above projects, and its contents are summarized as follows: ① In order to solve the problem of customized performance design of hydraulic excavators, a series of original core technologies such as "Hydraulic Excavator Electro-hydraulic Large-scale System Integrated Modeling Theory","Overall Performance Evaluation Indicators","Hydraulic Excavator Performance Test Process and Specifications","Complete Machine Operation Efficiency Comparison Method" have been developed, and the "Hydraulic Excavator Performance Customized Design Method and Systematic Process" have been established, and the performance design theory of hydraulic excavators has been developed.② The "Mechanical, Electrical and Hydraulic Integrated Performance Design Platform for Hydraulic Excavators" has been developed, which can realize rapid response virtual design of the system performance of serialized complete products.③ The above project achievement is composed of the combination of "theory" and "platform":"Hydraulic Excavator Mechanical, Electrical and Hydraulic Integrated Performance Design Platform", which not only realizes the design methodological innovation of "Mechanical, Electrical and Hydraulic Large-Scale System Integrated Design", but also fills the gap in the digital design of hydraulic excavator dynamic performance.④ The project results create a platform-based design model during the performance design process of the hydraulic excavator, which not only solves the problem of separation of organizational structure between new product development and customized design, but also solves the process of new product development and rapid design of customized products. Separation problem. Its platform-based parametric design method has important performance design functions for the research and development of hydraulic components, control strategies and virtual manufacturing of large electromechanical and hydraulic systems of excavator type.
The parameterization and diversified functions of the project platform provide a basic guarantee for the rapid advancement of innovative and customized products of hydraulic excavators in the international market, and have a significant role in promoting the company's competition-driving capabilities and informatization level. It has been successfully promoted and applied in projects such as "Parametric Analysis and Performance Simulation System for 20-Ton Excavators" of Shanshi Machinery Co., Ltd.,"Performance Test of 20-Ton Excavator" and Zoomlion Heavy Industry Co., Ltd."Performance Simulation, Verification and Display of 300-Ton Ultra-Large Hydraulic Excavator" and obtained market recognition. After years of application practice, a company has realized the development of a customized series of excavators, with cumulative new sales of more than 2 billion yuan and an increase of 340 million yuan in tax revenue.
During the project, he obtained 4 invention patents, 1 software copyright, published 3 monographs or teaching materials, won 2 awards, published 3 relevant doctoral thesis, 16 master's degree thesis, and published more than 20 relevant high-quality journals and conference papers.