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Optimum Determination of Partial Transmission Ratios of Mechanical Driven Systems Using a Chain Drive and a Two-step helical gearbox

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Journal of Environmental Science and Engineering(B) 2017年第2期6卷 80-83页

作者： Vu Ngoc Pi Tran Thi Phuong Thao Dang Anh Tuan Mechanical Engineering Faculty Thai Nguyen University of Technology Thai Nguyen 250000 Vietnam

This paper presents a study on optimum determination of partial ratios of mechanical drive systems using a chain drive and two-step helical gearbox for getting minimum size of the system. The chosen objective function was the cross section dimension of the system. In solving the optimization problem, the design equation for pitting resistance of a gear set was investigated and equations on moment equilibrium condition of a mechanic system including a chain drive and two helical gear units and their regular resistance condition were analyses. From the results of the study, effective formulas for determination of the partial ratios of the chain drive and two-step helical gearboxes were introduced. As the formulas are explicit, the partial ratios can be calculated accurately and simply.

关键词： gearbox design optimum design helical gearbox chain drive transmission ratio.

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Multi-objective Optimization of a Two-Stage helical gearbox to Improve Efficiency and Reduce Height

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Journal of Environmental Science and Engineering(B) 2023年第5期12卷 236-247页

作者： Tran Quoc Hung Truong Thi Thu Huong Ha Noi University of Industry Bac Tu Liem District 143315Ha Noi cityVietnam Thai Nguyen University of Technology Thai Nguyen city 251750Vietnam

The goal of this research is to look at multi-target optimization of a two-stage helical gearbox in order to determine the best key design elements for reducing gearbox height and enhancing gearbox *** do this,the method known as Taguchi and GRA(Grey Relation Analysis)were used in two stages to address the *** single-objective optimization problem was addressed first to close the gap between variable levels,and then the multi-objective optimization problem was solved to determine the best primary design *** first and second stage CWFWs(Coefficients of Wheel Face Width),ACS(Permissible Contact Stresses),and first stage gear ratio were also *** study’s findings were utilized to identify the best values for five critical design aspects of a two-stage helical gearbox.

关键词： helical gearbox multi-objective optimization gear ratio gearbox height gearbox efficiency.

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Acoustics Based Monitoring and Diagnostics for the Progressive Deterioration of helical gearboxes

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Chinese Journal of Mechanical Engineering 2021年第4期34卷 98-109页

作者： Kaibo Lu James Xi Gu Hongwei Fan Xiuquan Sun Bing Li Fengshou Gu College of Mechanical and Vehicle Engineering Taiyuan University of TechnologyTaiyuan 030024China School of Engineering University of BoltonBolton BL35ABUK College of Mechanical Engineering Xi’an University of Science and TechnologyXi’an 710054China Centre for Efficiency and Performance Engineering University of HuddersfieldHuddersfield HD13DHUK. School of Industrial Automation Beijing Institute of TechnologyZhuhai 519088China

gearbox condition monitoring(CM)plays a significant role in ensuring the operational reliability and efficiency of a wide range of critical industrial systems such as wind turbines and *** and timely diagnosis of gear faults will improve the maintenance of gearboxes operating under sub-optimal conditions,avoid excessive energy consumption and prevent avoidable damages to *** study focuses on developing CM for a multi-stage helical gearbox using airborne *** on signal phase alignments,Modulation Signal Bispectrum(MSB)analysis allows random noise and interrupting events in sound signals to be suppressed greatly and obtains nonlinear modulation features in association with gear *** coherence is evaluated for selecting the reliable bi-spectral peaks for indication of gear deterioration.A run-to-failure test of two industrial gearboxes was tested under various loading *** omnidirectional microphones were fixed near the gearboxes to sense acoustic information during *** has been shown that compared against vibration based CM,acoustics can perceive the responses of vibration in a larger areas and contains more comprehensive and stable information related to gear dynamics variation due to ***,the MSB magnitude peaks at the first three harmonic components of gear mesh and rotation components are demonstrated to be sufficient in characterizing the gradual deterioration of gear ***,the combining of MSB peaks with baseline normalization yields more accurate monitoring trends and diagnostics,allowing the gradual deterioration process and gear wear location to be represented more consistently.

关键词： Acoustics Modulation Signal Bispectrum helical gearbox Gear wear

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Optimum Determination of Partial Transmission Ratios of Three-Step helical gearboxes for Getting Minimum Cross Section Dimension

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Journal of Environmental Science and Engineering(A) 2016年第11期5卷 570-573页

作者： Vu Ngoc Pi Nguyen Khac Tuan Thai Nguyen University of Technology Thai Nguyen 23000 Vietnam

This paper presents a new study on optimum calculation of partial ratios of three-step helical gearboxes. The chosen objective function is the cross section dimension of the gearbox. In solving the optimization problem, the design equation for pitting resistance of a gear set was investigated and equations on moment equilibrium condition of a mechanic system including three gear units and their regular resistance condition are analyses. From the results of the study, effective formula for determination of the partial ratios of three-step helical gearboxes is introduced. As the formulas are explicit, the partial ratios can be calculated accurately and simply.

关键词： gearbox design optimum design helical gearbox transmission ratio.

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