PLANETARY GEAR MECHANISM AND ROTOR MACHINE SYSTEM

• Main Authors: MIYATA HIROYUKI, NAGAO HIDEKI
• Format: Patent
• Language: English; Japanese
• Published: 11.04.2023
• Subjects: BLASTING; ENGINEERING ELEMENTS AND UNITS; GEARING; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVEFUNCTIONING OF MACHINES OR INSTALLATIONS; HEATING; LIGHTING; MECHANICAL ENGINEERING; NON-POSITIVE DISPLACEMENT PUMPS; POSITIVE DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS; THERMAL INSULATION IN GENERAL; WEAPONS

To effectively suppress deformation due to centrifugal force of an internal gear so as to support high-speed rotation.SOLUTION: A planetary gear mechanism comprises: a sun gear that can autorotate around an axial line; a first shaft that extends in an axis direction in which the axial line extends, is fixed to the sun gear, and can rotate around the axial line integrally with the sun gear; a plurality of planetary gears that mesh with the sun gear and can autorotate around their own center lines parallel to the axial line; an internal gear that comprises internal teeth arranged radially outward with respect to the plurality of planetary gears and meshing with the planetary gears so as to face radially inward, and can rotate around the axial line; a second shaft that extends in the axis direction, is connected to the internal gear, and rotates around the axial line along with the internal gear; and a reinforcement member that is fixed to the outer peripheral surface of the internal gear, and is formed in an annular shape from a material having a higher specific strength than a material forming the internal gear.SELECTED DRAWING: Figure 2 【課題】内歯車の遠心力による変形を有効に抑え、高速回転に対応する。【解決手段】遊星歯車機構は、軸線を中心として自転可能な太陽歯車と、前記軸線の延びる軸方向に延びて前記太陽歯車に固定され、前記太陽歯車と一体に前記軸線を中心として回転可能な第一軸と、前記太陽歯車と噛み合い、前記軸線と平行な自身の中心線を中心として自転可能な複数の遊星歯車と、複数の前記遊星歯車に対して径方向の外側に配置され、前記径方向の内側を向いて前記遊星歯車に噛み合う内歯を備え、前記軸線を中心として回転可能な内歯車と、前記軸方向に延びて前記内歯車に連結され、前記内歯車とともに前記軸線を中心として回転する第二軸と、前記内歯車の外周面に固定されて、前記内歯車を形成する材料よりも比強度の高い材料で環状に形成された補強部材と、を備える。【選択図】図２