Gear pair meshing frequency generation method for gear box fault diagnosis and research

Abstract

The invention discloses a gear pair meshing frequency generation method for gear box fault diagnosis and research. The conventional gear box fault diagnosis has the defects of excessively long preparation time and excessively low efficiency. The gear pair meshing frequency generation method comprises the following steps of: firstly, confirming the types and number of gear pairs in a gear box and the connective relationships among the gear pairs; secondly, generating an augmented matrix of equation sets related to rotating frequencies of all rotating elements in all the gear pairs according to the types and number of the gear pairs and the connective relationships among the gear pairs as well as initial conditions; and thirdly, solving the equation sets through a Gaussian elimination method to obtain the rotating frequencies of all the rotating elements in all the gear pairs, and then generating the meshing frequencies of the gear pairs according to the relationships between the meshing frequencies of the gear pairs and the rotating frequencies of the related rotating elements forming the gear pairs. The gear pair meshing frequency generation method can be used for rapidly generating the meshing frequency of each gear pair in any complex gear system, thus laying a foundation for the gear box fault diagnosis and research.

Description

technical field [0001] The invention belongs to the technical field of gearbox fault diagnosis research, in particular to a gear pair meshing frequency generation method used for gearbox fault diagnosis research. Background technique [0002] As an indispensable power transmission equipment in the rotation system, the gearbox is widely used in mechanical transmission in wind power generation, aviation, shipbuilding, metallurgy, petrochemical, mining, lifting and transportation industries due to its strong bearing capacity and high transmission efficiency. In the system, it plays an irreplaceable role in national defense and industrial large-scale equipment. With the development of modern mass production and the advancement of science and technology, people have higher and higher requirements for gearboxes, and the internal gear train structure of gearbox equipment is becoming more and more complex. Multi-speed planetary transmissions have become the key research objects of r...

AI Technical Summary

Problems solved by technology

However, as the internal structure of the gearbox becomes more and more complex, more and more gearboxes with complex gear train structures, such as multi-speed planetary gear train structure gearboxes, are used in various fields, making the calculation of meshing frequency more and more difficult. Complicated, with a large amount of calculation, high calculation error rate, and even computer programming is required to solve the problem of high-order equations

At the same time, taking a gearbox with a multi-speed planetary gear train structure as an example, the change of its gear position means that the gear train structure of the gear box has changed, and it also means that the meshing frequency of the gear pairs needs to be re-analyzed and calculated. Under the rotating speed, the meshing frequency of the gear pair may have to be recalculated, which will greatly increase the preparation time for gearbox fault diagnosis and reduce the efficiency

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