Electro-hydraulic Actuator With High Torque Hydraulic System Design And Structure Strength Analysis

With the development of industrial automation market level, the application of the valves with actuators, presented greater torque, longer travel, higher precision, better stability, fast cutting, accurate regulation, and high-end technical performance requirements. The electro-hydraulic actuators through continuous development and fully able to implement these requirements.For the understanding of domestic and foreign research status and the advantages of the electro-hydraulic actuator, combined with demand for new product development and market its full energy-saving, environmental protection, and a series of advantages, developed in this paper is a method for fast cutting, high torque output, used in electro-hydraulic actuators on large diameter valves. By calculating the design reduces the valve switching time, so the valve is fully open and close time increased to ≤0.5s, design actuators for the introduction of Scotch, with its unique torque curve to become the best driver most rotary valves the control mechanism for the large diameter valves provide workers with greater open torque. The hydraulic system uses various hydraulic components assembled according to the principles of logic, built a small cylinder integrated design with no additional configuration huge hydraulic station, reducing the overall size of the actuator, making assembly easy.In this paper, the design of electro-hydraulic actuator main finished the following section. First, the design of the hydraulic system diagram, through calculation and analysis make sure that the various hydraulic components models; secondly, the application of SolidWorks software for electro-hydraulic actuators for three-dimensional modeling, and global interference checking and motion simulation project implementing agencies for problem detection to be modified and improved, initially completed the overall design of the model; and finally, the use of finite element analysis software, the main driver for the actuator components strength analysis at maximum torque, to determine the stress and strain in line with working conditions.