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Wheel gear reducer optimal design parameters and its addendum modification research

Author: ZhongXinLi
Tutor: LiuDeShun；ZhuGuangHui
School: Hunan University of Science and Technology
Course: Mechanical Engineering
Keywords: Wheel reducer Optimization Multi-body dynamics Dynamic loads Addendum modification Response surface methodology
CLC: TH132.41
Type: Master's thesis
Year: 2011
Downloads: 140
Quote: 0
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Abstract


As China's coal, iron ore and other mineral resources exploitation industry's rapid development, China's mining transport equipment for advanced demand is also growing, mining electric wheel dump truck is one of the representative products. Wheel reducer electric wheel dump truck as mine with the core component, requiring its compact structure, light weight, smooth running, so the wheel reducer gear transmission system parameters to optimize the design and improve its mechanical properties, for improving mine electric wheel dump truck operating performance is important. This article takes a company mine electric wheel dump truck wheel reducer for the study, from the gear transmission parameter optimization modeling, optimization model solution methods, tooth dynamic load analysis, parameter optimization addendum modification four aspects of the wheel reducer theoretical analysis and numerical simulation. The main research work is as follows: (1) wheel gear reducer drive parameter optimization modeling. According wheel reducer design requirements and the actual processing conditions, to establish a modulus of teeth, modification coefficient, working tooth width of design variables, constraints with teeth, the basic design variable constraints, transmission performance constraints, gear strength constraints, tooth Top thickness and other constraints for the design constraints to the total mass of the smallest gear system for the design of a single objective optimization design model. (2) method for solving optimization model and wheel reducer optimal design. For wheel reducer optimal design model with discrete variables co-exist with the characteristics of continuous variables, and put forward feasible enumeration method combined with genetic algorithm solving method. Calculated by using MATLAB programming optimization of parameter values ??and the corresponding objective function value obtained wheel gear reducer parameter optimization design. (3) multi-body dynamics simulation of gear tooth dynamic factor analysis. Based on multi-body dynamics simulation software ADAMS, establish wheel reducer gear transmission center wheel and a large star wheel meshing tooth dynamic loads simulation model. Tooth obtained by simulation of the dynamic load time histories and dynamic load factor, basically consistent with the theoretical analysis, the gear tooth tip modification provides a theoretical basis for analysis. (4) top gear modification parameter optimization. The use of experimental design methods, establish the amount of gear tooth tip modification and dynamic load coefficient between the second-order response surface model. In order to optimize the dynamic load coefficient minimum goal, to obtain the optimal amount of addendum modification. When compared with non-modification improved dynamic load gear teeth characteristics. In this paper, through the establishment of wheel gear reducer parameter optimization model of wheel reducer optimized design; multi-body dynamics simulation through the gears and gear tooth tip modification amount optimized design, improved dynamic wheel gear reducer load characteristics. The wheel reducer gear transmission system parameter optimization and optimization of the amount of tip modification provides a theoretical basis and practical reference.

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CLC: > Industrial Technology > Machinery and Instrument Industry > Mechanical parts and gear > The transmission mechanism > Meshing > Gears and gearing
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