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According to the characteristics of planetary gear transmission, the optimal design of the dual-input planetary reducer needs to meet the basic conditions of planetary gear design, such as the strength principle of the transmission ratio, the minimum modulus, the minimum number of teeth, the relationship between the tooth width and the modulus, the fatigue strength of the gear, and the installation. Conditions, gear ratio conditions, etc.
In general, the transmission ratio is based on the principle that the external meshing contact strengths are equal. The parameters in the optimization process are controlled by the constraint conditions, so that the optimization can satisfy the equal intensity distribution as much as possible, thus avoiding the traditional Optimize defects that are first assigned in equal strength.
According to the optimization result, the flameproof oil-cooled motorized drum is calculated by matching teeth to satisfy the above constraints. In order to avoid the collision of the planet wheels, it is necessary to ensure that there is a certain gap between the tooth tips on the center line of the teeth, that is, the sum of the radius of the tooth tip circle of the two planet wheels should be smaller than the center distance. Generally speaking, the inner gear bearing capacity of the planetary gear train is higher than that of the outer meshing, and the strength is mainly checked for external engagement.
The inner ring indexing circle diameter determines the outer dimensions of the planetary reducer. For the design of the multi-stage planetary gears, the diameters of the inner ring gears of each stage are generally required to be similar to minimize the radial dimension. In addition, since the reel size has been determined and the reducer is installed in the reel, the size of the third-stage ring gear is limited, and it is preliminarily determined that the index circle diameter of the third-stage ring gear does not exceed 400 mm.
By using the external penalty function method to optimize the dual input planetary reducer, good optimization results can be obtained, which provides a basis for improving the design quality of the dual input planetary reducer.
Analysis of the distribution of gear ratio
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