A fatigue-resistant connecting structure of an aero-engine blade tenon and a wheel disc

Abstract

The utility model relates to the technical field of aero -engine discloses an aero -engine blade tenon and wheel disc's anti -fatigue connecting structure, including wheel disc, tenon and U -shaped pin, the outer wall of wheel disc is set up with a plurality of mortise, mortise all are connected with tenon sliding, the side of tenon is away from wheel disc center place all is fixedly connected with blade, the side of tenon is close to wheel disc center place all are seted up with the clamping slot, the outer ring of wheel disc rear end is set up with the mounting groove, the inner wall of the side of mounting groove is away from wheel disc center place and is set up with a plurality of jack, U -shaped pin all are inserted into the jack and are connected with the clamping slot and are connected. In the utility model, through mortise and tenon sliding connection, cooperate U -shaped pin and clamping slot and connect, effectively dispersed the stress concentration of tenon and mortise contact surface, reduced the generation risk of fretting wear and fatigue crack, improved the stability of connection interface simultaneously, restrained blade loosening excessively in high -speed rotation, improved the anti -fatigue life of structure.

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