Wind power gear box contraction disk calculation method

Abstract

The invention provides a wind power gear box contraction disk calculation method. The method is characterized in that an inner ring, an outer ring, a planet carrier and a main shaft are thick-wall cylinders, and in a cylindrical coordinate system, the relation between displacement of the inner side and the outer side of the inner ring, the outer ring, the planet carrier and the main shaft and pressure of the two sides is obtained through elasticity analysis of the thick-wall cylinder theory and a displacement component formula in a Lame formula; Whether the contraction disc is pressed according to full stroke or full pre-tightening force is obtained; components of the inner ring, the outer ring, the planet carrier and the inner side and the outer side of the main shaft of the contractiondisc are obtained; And the equivalent forces of the inner ring, the outer ring, the planet carrier and the main shaft of the final contraction disc can be obtained according to the yield condition ofthe Mites. According to the method, the calculation problem of the contraction disk is solved, a basis is provided for new gearbox design, and accurate strength analysis and torque transmission parameters are provided for designing and maintaining the contraction disk of the wind power gearbox.

Description

technical field [0001] The invention relates to a calculation method for a shrink disk of a wind power gearbox. Background technique [0002] The input conditions of the wind power gearbox are complex, and the input torque is relatively large. The connection between the input main shaft and the planetary carrier needs to transmit large torque and withstand large and impact loads. The shrink disk connection is the only feasible connection method. As an important part of the mechanical power transmission system of a single large-capacity wind turbine, the shrink disk connection of wind power gearbox has become one of the key technologies restricting the development of wind power technology. The calculation of its strength and connection performance has important social and economic benefits. [0003] In the prior art, the three-dimensional modeling based on the actual size of the shrink disk is imported into the finite element software, and the contact form is set in the finit...

AI Technical Summary

Problems solved by technology

[0005] 1. The three-dimensional modeling of the shrink disk and the pre-processing workload in the finite element are relatively large

[0006] 2. Shrink disk connection is a process from clearance fit to interference fit. It is difficult to achieve convergence in simulating this process in finite element, and the calculation results are inconsistent with the actual use results

[0008] Therefore, at this stage, there is no accurate calculation method for the shrink disk of the wind power gearbox, and relevant calculations cannot be performed. As a very important connecting part of the gearbox, the shrink disk has an important impact on the design of the new gearbox and the after-sales maintenance of the gearbox.

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