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http://dx.doi.org/10.14775/ksmpe.2021.20.12.044

Gear Strength Evaluation of Electric Axle for Construction Machinery using Simulation Model  

Han, Hyun-Woo (Department of Biosystems Engineering, Seoul National University)
Park, Young-Jun (Department of Biosystems Engineering, Seoul National University)
Lee, Ki-Hun (Technical Laboratory, Seil Industrial Co., Ltd.)
Oh, Joo-Young (Advanced Mechatronics R&D Group, Korea Institute of Industrial Technology)
Kim, Jeong-Gil (Smart Agricultural Machinery R&D Group, Korea Institute of Industrial Technology)
Publication Information
Journal of the Korean Society of Manufacturing Process Engineers / v.20, no.12, 2021 , pp. 44-53 More about this Journal
Abstract
As environmental issues have emerged worldwide, emission gas regulations have been strengthened. In the construction machinery sector, studies have been actively conducted to utilize the power source of electric motors owing to the increasing demand for zero emissions. In this study, the gear specifications of an electric axle for construction machinery were selected by considering the specifications of the motor, gear tooth contact pattern, and face load factor. The gear strength evaluation was performed at the system level using the simulation model. The bending and contact strength of the spiral bevel gears and the bending strength of the planetary gear set showed a safety factor of 1 or more. However, the contact strength of the planetary gear set showed a safety factor of 0.92. Conservative results were derived by performing the analysis under the rated load condition of the motor. However, the ratio of the equivalent torque to the rated torque of the motor was 45% or less, hence, it was determined that no difficulties should arise regarding the durability of the axle.
Keywords
Electric Axle; Gear Strength; Misalignment; Contact Pattern; Face Load Factor;
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