Optimization And Simulation Analysis Of Linkage Flip-gate Hoist For Large Span

The significance of the Hydraulic project in the Poyang Lake is to recover and adjust the relationship between rivers and lakes. Also we want to solve the problem that the water level dropping too fast and protect the water resource comprehensively. The Hydraulic project is mainly composed of sluice, ship lock, fishway etc. The sluice has multiple large orifice discharge channels spanning 60 meters. The dry season of the Poyang Lake is about lasting half an year. The amplitude of the water level is usually up to 10 meters. Some high demands are made for the oversized orifice hydraulic steel gate and sluice gate hoist because of low-speed, heavy load, high water level and long time to station. So the research for large aperture and high-level amplitude and hydraulic gate hoist equipment will be a key driver of the whole project.Based on the extensive research for domestic and foreign large hydraulic gate and hoisting equipment, we propose three agency programs for the gate and gate hoist. By comparing their advantages and disadvantages, we determined the structure of a pattern of six linkage flip-gate hoist. The linkage flip-gate hoist is driven by the four hydraulic cylinders, the cylinders are symmetrically arranged on both sides of the gate. We establish a parametric kinematics model of the agency and obtain expressions of the displacement, velocity and acceleration for the key components by simplifying the shutter hoist. We use ADAMS to simulate the motion of linkage flip-gate hoist. Then, on the basis of kinematic analysis, build the dynamical modeling of Lagrange and analyze the force of the hoist and obtain a expression of the driving force of the hydraulic cylinder. According to kinetic equations, we use the driving force peak of hoist as the main optimization goal, both compact drive smoothness and structure, a multi-objective optimization model dynamics hoist mechanism, and in accordance with the multi-objective genetic algorithms dynamic optimization model optimization solution to obtain a six-bar opening and closing mechanism of structural parameters of the optimal solution. Finally, we use the software ADAMS to do dynamics simulation of the hoist based on the optimization solutions. Through doing these, we can obtain the kinematic and dynamic characteristics of each component, and dynamics simulation based on finite element analysis and verification of the main link member.The dynamics analysis and finite element results show that the designed linkage flip-gate hoist can meet the technical requirements and design units offered. The dynamics optimized structure parameters can greatly reduce cylinder driving force required. Also we can improve the stability and reliability of the gate running the compactness of the structure. Therefore, the design of this paper has engineering application value.