Research On Key Technologies Of Railway Crossing Safety Equipment

In the construction process of power grid construction,it is often encountered that new overhead transmission lines intersect with existing railway lines.With the prosperity of China’s infrastructure construction,the crossover of overhead transmission lines has become increasingly frequent.The laying of transmission lines across railways is the construction of a railway crossing.According to the regulations of the railway department,when crossing construction is carried out,the railway must be provided with necessary protection.At present,cross-railway construction protection projects generally use artificial construction scaffolding on both sides of the railway,and then artificially set up protective nets on the top of the scaffold.This method of construction protection is highly dangerous and cumbersome.This paper analyzes and studies a variety of existing over-the-shelf protection schemes.Aiming at the typical working conditions of railway crossing,a new type of railway crossing safety protection scheme is proposed,and a set of railway crossing safety protection equipment suitable for this program is designed.Based on theoretical calculations and mechanical design,this paper refers to relevant specifications and designs and calculates the main components such as trusses,slewing bearings,and slewing drives.The three-dimensional design software was used to establish a digital prototype model for the complete machine,providing the original model for subsequent statics and dynamics research.Refer to the "Crane Design Code" and "Steel Structure Design Code",this paper analyzes the load conditions of the equipment under a variety of operating conditions,and analyzes the stability of equipment during the working process.The finite element software ANSYS was used to check the strength and stiffness of main towers and beams,verifying the rationality of the design.The multi-body dynamics software ADAMS was used to create the multi-body dynamics model of the machine.The working process of the single machine was simulated.In this paper,the trajectory of the center of gravity of the machine in the work process is obtained by programming,and the force of each leg in the process of rotation is analyzed.Finally,ADAMS and ANSYS were used for the joint simulation.The rigid-flexible coupling analysis was performed on the truss structure,and the force conditions of each cylinder in the working process were obtained when considering the truss elasticity.The new type of railway crossing safety protection scheme and equipment successfully replaced the existing protection solutions with high risk and large manual workload.The automation and standardization of railway crossing safety protection operations have been realized,and the protective effect and reliability of operations have been improved.