The purpose of this study is to explore the mechanical behavior of the main shaft device of JKM4.5×6 hoist in the working environment.By establishing a mathematical model based on the actual working conditions,and using SolidWorks software to construct a three-dimensional geometric model,the finite element analysis method is used to carry out static simulation,modal analysis and transient analysis of the main shaft device of the hoist.The results show that the maximum equivalent stress of the spindle device is 37.33 MPa,which is located in the contact area between the spindle flange and the friction wheel.The maximum deformation is 0.395 mm,which appears at the contact between the spindle and the motor.The natural frequencies of the spindle device are mainly concentrated in 215 Hz,227 Hz,259 Hz and 290 Hz.In particular,when the hoist works for 4.5 seconds,the main shaft device shows significant stress fluctuations,and the maximum stress value reaches 73.4 MPa at the peak of the shock wave.The relevant research results are of great significance for guiding the design and optimization of the main shaft device of the hoist and ensuring its stability and safety.
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