Conveyor Belt Support Analysis And Roller Replacement Vehicle Design

Belt conveyor as an important device,which can realize continuous conveying material play an important role in coal mining operation,in the process of rapid economic development in our country,the research of belt conveyor and continuously towards high capacity,high speed,long distance direction,it also produced some abuses,conveying system in the vast number of roller,Appear on the wear and fracture failure,such as maintenance task is very heavy,and the maintenance of the traditional way need to be replaced in the condition of conveyor system downtime to artificial rollers,work strength,high security risks,the serious influence the continuity of conveying system,to get rid of the artificial replacement of rollers,improve the efficiency of belt conveyor maintenance,study design the non-stop roller replacement vehicle.In order to study the stress state of supporting the conveyor belt running status.In this paper,a conveyor simulation model is established using Recur Dyn software,established a support arm model on both sides of the middle roller,according to the actual working condition of the conveyor and support arm work plan,set up the model parameters and the movement of the drive and carry on the simulation,converge to predetermined speed measured tape speed,The conveyor belt displacement of the support section meets the predetermined distance,which verifies the accuracy of the model,and the average longitudinal force value of the scaffold is 13086.5N and the maximum value is 15855N;the average lateral force value along the conveyor belt running direction is 282.5N and the maximum value is 497.4N.Based on the functional requirements of replacing rollers and the restriction conditions of working conditions of the belt conveyor referred to,combined with the force of the supporting arm,the overall scheme of replacing the supporting roller with the supporting belt and disassembling the rollers was put forward.Based on this,the overall structure and working mode of the replacement vehicle were designed,and the three-dimensional model of the replacement vehicle was established.To verify the replacement roller manipulator can work in narrow space smooth disassembling rollers,the connecting rod coordinate system is established based on the 3D model of the manipulator,and get the D-H parameters,find out the location of the connecting rod coordinate transformation matrix,through MATLAB toolbox robot to set up the manipulator model,use the monte carlo method to solve the manipulator movement space,The results show that the position of the manipulator can meet the replacement demand of any roller set.The displacement curves of the center of mass of the clamping arm,the damaged roller and the spare roller were obtained by simulation.The results show that the replacement process of the manipulator can be completed smoothly and smoothly.According to the working state of the manipulator and the support arm,the statics analysis is carried out by ANSYS software.The results show that the maximum equivalent stress of each mechanism is less than the allowable stress of the material,and the maximum deformation of the two telescopic arms is less than the allowable deflection.The structure was optimized under the condition of satisfying the working strength.The modal analysis of the optimized manipulator was carried out to obtain the natural frequency and vibration shape of the support arm.The results were compared with the calculated conveyor excitation results,and the results showed that the support arm would not resonate with the external excitation.There are 105 pictures,7 tables and 76 references in this paper...