Improved transmission ratio distribution method for multistage cylindrical gear transmission system

Abstract

The invention aims to provide an improved transmission ratio distribution method for a multistage cylindrical gear transmission system. The method comprises the following steps: determining working conditions; determining a target function; determining a change range and a distribution form of each input parameter, and performing shaping processing on discrete data; analyzing the sensitivity of each input parameter by using a global sensitivity analysis method based on variance, determining a design variable, and simplifying the required input parameters; determining constraint conditions; substituting the established optimization model into a sequential quadratic programming algorithm, and outputting an optimized continuous solution; and optimizing continuous solution integer discrete processing on output which is actually discrete data to obtain a plurality of groups of mixed discrete variables, screening out an optimal result and outputting the optimal result. According to the method, transmission ratio distribution of the cylindrical gear system of any stage can be carried out, and compared with an existing second-stage transmission ratio distribution method, a third-stage transmission ratio distribution method and other few-stage transmission ratio distribution methods, the design efficiency of the cylindrical gear transmission system is greatly improved.

Description

technical field [0001] The invention relates to a gear system design method, specifically a gear system transmission method. Background technique [0002] The ship transmission device is an important device that transmits engine power to the propeller and drives the ship to sail at different speeds. Since most ships use medium and high-speed diesel engines, steam turbines or gas turbines, the speed of the propeller is mainly limited by propulsion efficiency and other factors. , but not too high. The transmission ratio of the reduction gearbox must be configured to ensure that the high speed of the main engine matches the low speed required by the propeller. [0003] The existing equal-intensity transmission ratio allocation method needs to input more parameters, and many parameters cannot be determined in the scheme design stage, so the default values ​​of the parameters need to be selected artificially. If the system structure is more complex, human subjective factors will...

AI Technical Summary

Problems solved by technology

[0003] The existing equal-intensity transmission ratio allocation method needs to input more parameters, and many parameters cannot be determined in the scheme design stage, so the default values ​​of the parameters need to be selected artificially. If the system structure is more complex, human subjective factors will affect the correctness of the calculation results. Reliability has a great impact, and fixing certain gear parameters will make the allocation method only suitable for certain specific situations, and may not be suitable or even invalid for other working conditions

Images