Aeroengine transmission mechanism and aeroengine

Abstract

The invention discloses an aero-engine transmission mechanism and an aero-engine, relates to the field of aero-engines and is used for optimizing the performance of the aero-engine transmission mechanism. The aero-engine transmission mechanism includes a first bearing seat, a second bearing seat, an eccentric shoulder, a first bearing, a second bearing and a transmission shaft. The circle center of the third through hole of the eccentric shoulder is eccentric relative to the circle center of the outer contour of the eccentric shoulder; the eccentric shoulder is installed in the first through hole. The circle center of the first outer ring of the first bearing is eccentric relative to the circle center of the first inner ring; the first outer ring is installed in the third through hole. The second bearing includes a rotatably connected second outer ring and a second inner ring, and the second inner ring is installed in the second through hole. The first end of the transmission shaft is installed in the through hole of the first inner ring, and the second end of the transmission shaft is installed in the second inner ring. The above technical proposal optimizes the structure and performance of the transmission mechanism of the aero-engine.

Description

technical field [0001] The invention relates to the field of aero-engines, in particular to an aero-engine transmission mechanism and an aero-engine. Background technique [0002] Aeroengines are complex and high-precision mechanical units assembled from tens of thousands of parts. Aeroengines mostly use shaft parts for transmission. Shaft parts need to be connected through two or more shaft seats, so there are extremely high precision requirements for the concentricity between the associated shaft seat holes, and small deviations will affect the assemblability of the aero-engine and the dynamic balance of the rotating parts , and may even affect the safe operation of the aero-engine. [0003] Usually, the associated shaft seats of an aero-engine are separated by a long distance and connected through several complex parts. Therefore, complex and comprehensive tolerance chain calculations, high-precision machining, and various rigorous assembly processes are required for ea...

AI Technical Summary

Problems solved by technology

[0004] The inventors have found that at least the following problems exist in the prior art: the structure of the aero-engine is huge and complex, and there is often a long distance between the two shaft seats and they are connected via several parts. There is a deviation △δ in the degree. In order to ensure the concentricity between the holes and reduce the deviation △δ value, it is necessary to calculate the tolerance chain for each part.

Precision machining also needs to adapt to the corresponding complex assembly process, which is costly and difficult

Aeroengine parts are often complex in structure and have high requirements for machine tools, so it is extremely difficult to achieve the above requirements

Even so, the deviation △δ is still unavoidable, which may cause the shaft to fail to assemble, affect the dynamic balance of the rotating shaft, and seriously affect the safe operation of the aero-engine

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