Research And Design Of Automatic Walking Positioning System For Hydroelectric Power Station Gantry Crane

As an important component of the hydropower station,the gantry crane is responsible for the task of opening and closing the dam gate,and plays an important role in the operation of the hydraulic gate.The positioning efficiency and positioning accuracy of the gantry crane during operation have an important impact on the execution of the gate opening and closing task.At present,the gantry crane still adopts the traditional control method,that is,the ground commander relies on visual inspection to instruct the door operator to perform manual control,and the positioning accuracy and positioning efficiency are low during operation.How to achieve accurate positioning of gantry cranes in production applications and improve positioning efficiency has always been the research focus of gantry cranes.In this paper,the gantry crane of Song Jianghe Xiao Shan Power Station is taken as the research object.Aiming at the problems and shortcomings of the gantry crane traveling mechanism during walking and positioning,a set of gantry crane automatic walking positioning system based on RFID technology is designed to improve its positioning.Accuracy and positioning efficiency.Firstly,by analyzing the structure,working characteristics,frequency control principle and braking characteristics of the gantry crane traveling mechanism,the influence of the braking inertia of the gantry crane traveling mechanism on the positioning accuracy during the braking process is further studied.Secondly,the braking process of the gantry crane traveling mechanism is analyzed,the braking distance and braking time of the trolley running mechanism under different braking conditions are calculated,and the simulation is carried out by using MATLAB software.Finally,the simulation results are applied to the positioning system.