Research On The Key Technology Of Compound Driving Device For Mine Rail Locomotive

Mine auxiliary transportation is an important part of the coal mine production process.Increasing the auxiliary transportation level can realize the reduction of staff and efficiency of coal production enterprises,which has an important impact on the development of coal mines.Comparative analysis of four driving methods: horizontal friction drive,vertical compound drive,pin gear drive and gear rack drive.The research shows that the pin gear transmission mode is suitable for the ground track but not for the suspension track system.The rack and pinion and horizontal friction drive are suitable for the suspension track and not for the ground track.Higher.The vertical composite drive can be flexibly applied to both ground and suspension conditions,and only needs to lay the rack when the climbing section needs to be engaged with the drive,which significantly reduces the application cost.After summarizing the existing drive technology research,a new vertical composite drive-based electric traction monorail crane design scheme is proposed to meet the current long-distance,no-reload,large-capacity green transportation requirements of coal mining.First,the friction and wear performance of the vertical composite drive device was tested.After plasma cladding technology was applied to the surface of the composite drive wheel,an alloy coating with a low wear rate and a high friction coefficient was obtained,which can effectively improve Drive wheel service life.At the same time,in order to realize the non-stop automatic engagement of the composite drive device during the operation of the monorail crane,an automatic conversion mechanism capable of automatically realizing the calibration of the gear phase angle was developed.It has been verified by experiments that the mechanism can accurately achieve the automatic locomotive into the rail.In order to verify the rationality of the technical scheme of the composite drive device designed in this paper,Solid Works software was used to establish a three-dimensional model of the composite drive and track system,and the models were imported into Workbench and ADAMS software for numerical simulation.The simulation results show that the deformation of the monorail crane composite drive device and track system under extreme working conditions is within the allowable strength range of the material.After a modal analysis of the composite drive wheel,it is found that the natural frequency differs greatly from the working frequency of the motor,and the monorail crane will not resonate during operation.The output torque of the monorail crane under three different working conditions of transport container,personnel and hydraulic support increases with the increase of the climbing angle,and the smaller output torque fluctuation of the motor can meet the power requirements under various working conditions.Finally,applying the technical advantages of 3D printing to the trial production of the composite drive wheel and the track system cooperating with it,a reduced version of the test model was obtained.By assembling and testing the test model,the general law of gear meshing in the drive conversion process of the composite drive device is obtained,which has important guiding significance for optimizing the design scheme.