Design And Simulation Analysis Of Railway Ballast Recollecting Machine

The total mileage of my country’s railways is long,and the ballasted tracks are widely used.However,under the cyclic dynamic load of the train,stone ballast will have problems such as displacement and depression,which will cause safety hazards such as uneven track surface and non-compliance with the design requirements of section bearing capacity.Therefore,the railway slope needs regular maintenance.After investigation,large-scale ballast recollecting machines have been used for railway overhaul and new laying railway lines.However,in mountainous areas and turnouts,the original operation method of 4~5 people in groups and use of large pull rakes to slope maintenance is still adopted.Therefore,it is very necessary to develop and promote the use of small or mediumsized railway slope maintenance machinery for railway works.This equipment is used for the standard slope finishing of the ballast,and can also be used for the ballast evening operation after the ballast is unloaded by large equipment.When the large-scale ballast recollecting machine is inconvenient to use or in mountainous areas or working hours are tight.It is of great significance in terms of efficiency,improvement of operation quality,liberation of labor,and reduction of railway maintenance costs.The article first introduces the research background of the subject,the research status of the ballast recollecting machine at home and abroad,and analyzes the advantages and disadvantages.and make a introduction of the development status of rigid-flexible coupling analysis technology and mechatronics technology.Then adopts the modular design method to carry out three modules.The structural design of the module takes the safety protection measures into account,and uses the digital design tool Solid works to carry out the three-dimensional model design.Further on transmission strength check and kinematic analysis was used to verify the feasibility of the equipment operation and the accuracy of the trajectory.The ballast trajectory obtained by the simulation of the control mode is used to select the best control mode.And the basis of kinematics,one beam is flexibly processed,and the rigid-flexible coupling dynamics analysis is performed to obtain the equivalent stress and strain of the beam with time.Finally,the hydraulic system and control system of the equipment ballast harvester are designed.The hydraulic system realizes double pump oil supply,drives the hydraulic motor to walk on the line and three-degreeof-freedom slope shaping,the control system adopts PLC control,and realizes two control modes of automatic ballast collection and manual inching ballast collection,which respectively meet the daily maintenance of the site with better conditions,the overhaul and the use of ballasts with poor initial conditions.In Siemens Debugging on S7 software is feasible.The ballast recollecting machine’s efficiency is 360m/h,which is 5.4times of manual ballast collection.The total weight of the ballast recollecting machine does not exceed 350 kg.And the equipment’s strength and rigidity meet the requirements of use.