| The underground Diaphragm wall hydraulic grab is a highly integrated special engineering machine that uses hydraulic power to drive the piston rod movement of the bucket hydraulic cylinder to drive the opening and closing of the left and right flaps arranged on the bucket.A device for excavating a Diaphragm wall by taking rock and soil.Underground Diaphragm wall hydraulic grabs are commonly used in excavation of deep foundation pit retaining walls,cut-off walls and load-bearing walls for foundations of high-rise and super-tall buildings;excavation of foundation pits and shield well retaining walls for subway construction;Digging of the wall.It is especially suitable for excavation and loading on one side of a narrow space.The hoisting system is one of the core components of the underground Diaphragm wall hydraulic grab.Its bearing capacity is very important for the safety performance of the underground Diaphragm wall hydraulic grab.In engineering applications,the hoisting frame deformation or weld cracking will occur.phenomenon.In order to solve the practical problems of this project,and provide reference for the design of the series of underground Diaphragm wall hydraulic grab hoisting system,this thesis designs,optimizes and optimizes the finite element mechanical strength calculation of the underground Diaphragm wall hydraulic grab hoisting system.This paper firstly designs and calculates the hydraulic grab hoisting system for underground Diaphragm wall.The limit conditions were selected,the mechanical analysis of the key components was carried out,and the model was created in the 3D software.Secondly,the finite element analysis method is used to simulate and analyze the key components of the hoisting system.Through the simulation results,it is judged that the design scheme of the underground Diaphragm wall hydraulic grab winch system can meet the use requirements.Finally,the hoisting frame is optimized according to the actual situation,and a more reasonable plan is obtained through a series of design optimization and simulation,and the welding structure and weld stress analysis are emphasized.The research results of the design and analysis of the hydraulic grab hoisting system of the underground Diaphragm wall provide a theoretical basis for the serial design and structural optimization of the underground Diaphragm wall hydraulic grab hoisting system.At the same time,the analysis method of this paper has high versatility,and its design idea can provide reference for the design and improvement of underground Diaphragm wall hydraulic grab structural parts. |