BLADE DEVICE Russian patent published in 2016 - IPC F01D5/30 

FIELD: engines.

SUBSTANCE: invention relates to negative displacement machines and engines, namely, to blade device (40) including rim (56) and made in it retaining slot (58), which has on its side walls (60) passing along projections (62), which form undercuts (64), and in which there is a certain number of blades (25, 27) forming a blade ring of the turbomachine, herewith each blade (25, 27) apart from abdomen (48) has for attachment a hammer-shape coming into undercuts (64) root (50) and is pressed to the projections (62) by means of element (46) located between lower side (68) of the blade root and bottom (70) of the retaining slot (58). To achieve especially reliable, durable and low-wear fixation, which would provide especially simple assembling and disassembling, it is designed that every element (46) is made plate-shaped, in the projection of abdomen (48) of the blade towards bottom (70) of retaining slot (58) it has at least one made under abdomen (48) of the blade groove (52) for pressing and in the longitudinal direction of retaining slot (58) only partially covered by pressed with it root (50) of the blade.

EFFECT: technical result is simplified assembling and disassembling, longer life.

16 cl, 16 dwg