| As a new type of non-contact transmission device,the speed-regulating magnetic coupler changes the torque and speed from the input end to the output end by changing the air gap between the conductor and the permanent magnet disk group.It has the advantages of simple structure and convenient installation.In this paper,the DTC80/10/160S deep groove angle belt conveyor is selectedas the reference matching equipment,and the magnetic coupler is installed on the equi pment and speed is adjusted.The structural innovation of the magnetic coupler gap adjustment device is carried out,and the helical differential mechanism whichcan pro vide small displacementisintroduced.Compared with the existing magnetic coupler,the speed-regulating magnetic coupler has more stable movement and more accurate adj ustment precision.According to the structure of the transmission part and the basic laws of the magnetic circuit,the equivalent magnetic circuit diagram of the speed-regulating magnetic coupler is drawn,and the calculation formula of the transmission torque of the speed-regulating magnetic coupler is deduced,and the dimensions of the conductor plate and other parts are calculated.Then the screw differential mechanism design calculation and check.Using Ansys Maxwell software,the three-dimensional magnetic field modeling was carried out on the main transmission parts of the speed-regulating magnetic coupler,and the electromagnetic field finite element simulation was carried out on it under the transient condition.The size and distribution of conductor disk eddy current under the condition of various air gap and slip are compared.The relationship between the transmission torque and various factors affecting the speed regulation magnetic coupler and the influence of slip on various factors of the speed regulation magnetic coupler are analyzed.Through the finite element simulation analysis of the main parts of the spiral differential mechanism,the stress andtotal deformation of parts are obtained,which are within the respective allowable range,but the deviation is larger than the allowable range.Through the analysis,it is caused by the excessive size of the parts,so the structure is improved within the allowable range of strength. |
