BOLT-FASTENING STRUCTURE AND TURBO MACHINE USING THE STRUCTURE Russian patent published in 2017 - IPC F16B5/02 F16B31/04 F01D25/24 

Abstract RU 2624726 C9

FIELD: machine engineering.

SUBSTANCE: bolting structure includes a first element having a bolt hole; a second element having an internally threaded portion; a bolt inserted in the bolt hole and an internally threaded portion for fastening the first element and the second element to one another; and a nut located on the first member having a convex portion protruding toward the second element. If we assume that the longitudinal direction of the bolt axial direction, the cross-sectional area of the convex portion of the nut perpendicular to the axial direction, exceeds the bolt-sectional area perpendicular to the axial direction. The second element has a bolt hole formed on the portion with an internal thread on the side of the first element, and the length of this bolt hole is longer than the protrusion length of the convex portion of the nut.

EFFECT: reduction of the axial force to the bolt.

10 cl, 9 dwg

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RU 2 624 726 C9

Authors

Tanno Yohei

Hashimoto Taiji

Matsunaga Hiroyuki

Naruse Tomohiro

Dates

2017-07-05Published

2014-06-27Filed