Performance Analysis And Optimization Design Of Working Device Of Stone Forklift Loader

Stone forklift loader is a new type of construction machinery spawned by the stone mining industry.Stone forklift loader must have good comprehensive performance in order to meet the actual working requirements of mining.The working device is the actuator of the stone forklift loader.As the key component of the shovel loading and lifting work,the overall performance of the work device structure directly affects the operating efficiency of the stone forklift loading truck,fuel economy and other complete machine work performance.At present,the domestic stone forklift loading truck manufacturers mainly adopt the design method of replacing the function accessories or using experience based on the wheel loader working device,which severely limits the improvement of the overall performance of the forklift loader.The thesis focuses on the typical working conditions during the working process of stone forklift loader based on the actual work requirements.According to the main technical parameters of the forklift truck,the design and calculation of the boom and the driving hydraulic cylinder of the forklift truck working device are carried out.At the same time,according to the requirements of the fork movement,the size of the rocker arm,the connecting rod and other components are calculated and calculated,and the fork is completed.The position coordinates of the key hinge points of the working device were obtained by establishing the motion equation of the key components in the forklift loading operation process.The kinematics simulation of the working device of the forklift was carried out based on Adams.The transmission angle between the various parts of the transfer mechanism and the change of the angle between the fork and the horizontal line during the operation of the fork-lift truck were studied.At the same time,according to the kinematics equation of the forklift loading device,the influence of the length of the rocker arm and the length of the connecting rod on the translation performance of the fork is obtained based on mathematical simulation.According to the practical application requirements of the stone fork loading work device,the linear combination analysis of the dual objectives of the transmission performance and the fork translation performance of the stone forklift loading device was performed using the linear weighted sum method.The particle swarm optimization algorithm was adopted.The design of the rocker arm and connecting rod length is used to optimize the structure of the forklift truck.At the same time,the key factors affecting the lifting performance of the forklift truck are analyzed,and the position of the key hinge point of the boom hydraulic cylinder is optimized.According to the optimized results,the analysis results can be obtained.During the lifting process of the blocks,the change range of the fork angle is reduced from 25° to 5°,and the translation performance of the working device is significantly improved.The research of this topic provides a basis for the research and development of domestic large-tonnage stone forklifts.It has guiding significance for optimizing the design of forklift loading work equipment,improving the performance of existing forklift trucks,and will help promote the development of the domestic stone industry.At the same time,the research results of this paper have reference significance for the optimization of other engineering machinery.