FIELD: machine building.
SUBSTANCE: invention relates to a structure for mounting a ring gear. Mounting structure for a ring gear is made in such a way that ring gear (10) is set on supporting section (8), and ring gear (10) thrusts against locking section (11), which protrudes from one end section of external peripheral surface (9) in the direction of ring gear (10) axis of rotation. Groove (14) is formed in the section of external peripheral surface (9), which is located on the side of locking section (11) of external peripheral surface (9). Section of external peripheral surface (9), which is located on the side opposite to locking section (11) over groove (14) presents pressing surface (20), which ring gear (10) is pressed on and contacts with. Preset gap (C1, C2) is formed in radial direction of ring gear (10) and in the direction of ring gear (10) axis of rotation.
EFFECT: reduced concentration of voltage at the locking section, preventing high increase of local contact pressure during pressing the ring gear are achieved.
10 cl, 4 dwg
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