Mechanical efficiency analysis of speed reducer with planetary gear and parallel shaft
To quantitatively analyze the efficiency of speed reducers with planetary gear and parallel shaft,calculation models for the transmission efficiency of planetary gear and parallel shaft reducers are derived,and the influence of motor torque and speed on the transmission efficiency of these two types of reducers is studied.The results show that the optimal efficiency of planetary gear reducers is concentrated in the medium torque and high speed operating conditions,while the optimal efficiency of parallel shaft reducers is concentrated in the low torque and high speed range;as the torque increases,the transmission efficiency of both types of reducers continuously decreases,and the transmission efficiency of planetary gear reducers is higher;as the speed increases,the transmission efficiency of both types of reducers continues to increase,and the transmission efficiency of parallel shaft reducers is higher;the main losses of the two types of reducers are concentrated in the gear meshing and bearing parts,the gear meshing loss of planetary gear reducers accounts for the highest proportion,while the transmission loss of parallel shaft reducers is concentrated in the bearing loss.
electric vehiclespeed reducertransmission efficiencytransmission losses
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