FIELD: machine building.
SUBSTANCE: invention relates to turbine impeller blade attachment assembly. Blade attachment assembly to turbine wheel, which includes number of blades (4) surrounding central disc (2). At least one blade (4) is connected to disc (2) with possibility of rotation or articulated. Position of blade (4) relative to disc (2) during operation is defined by thrust (22) provided between blade (4) and support (16), which is connected with disc (2) or forms part thereof. Support (22) is formed by support 16 support surface 18 and blade 4 support surface 20. Support 16 support surface 18 is not flat and has bend 19. Blade 4 support surface of 20 has bend 21, matched with support 16 support surface 18 bend 19. Thrust 22 is designed to take up forces acting both tangentially and radially on blade 4.
EFFECT: increased strength and durability of blades.
5 cl, 3 dwg
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