Coupling device and torsional natural frequency adjustment method

Patent metadata

Field	Value
Publication number	US-12435762-B2
Application number	US-202017791307-A
Country	US
Kind code	B2
Filing date	Jun 17, 2020
Priority date	Feb 26, 2020
Publication date	Oct 7, 2025
Grant date	Oct 7, 2025

Abstract

A coupling device that connects a first shaft and a second shaft that includes a primary inner ring member mounted on the first shaft, a primary outer ring member disposed on an outer circumferential side of the primary inner ring member, a primary elastic member for connecting the primary inner ring member and the primary outer ring member, a secondary inner ring member mounted on the second shaft, a secondary outer ring member disposed on an outer circumferential side of the secondary inner ring member, a secondary elastic member for connecting the secondary inner ring member and the secondary outer ring member, and a weight attaching plate interposed between the primary outer ring member and the secondary outer ring member.

First claim

The invention claimed is:

1. A coupling device for connecting a first shaft and a second shaft, comprising:
a primary inner ring member mounted on the first shaft;
a primary outer ring member disposed on an outer circumferential side of the primary inner ring member;
a primary elastic member for connecting the primary inner ring member and the primary outer ring member;
a secondary inner ring member mounted on the second shaft;
a secondary outer ring member disposed on an outer circumferential side of the secondary inner ring member;
a secondary elastic member for connecting the secondary inner ring member and the secondary outer ring member; and
a weight attaching plate interposed between the primary outer ring member and the secondary outer ring member, the weight attaching plate including a weight attaching portion capable of attaching and detaching an additional weight to and from the outer circumferential side of the primary outer ring member and the outer circumferential side of the secondary outer ring member, and being formed in a plate shape extending in a radial direction of the coupling device between the primary inner ring member and the secondary inner ring member.

2. The coupling device according to claim 1 ,
wherein the weight attaching portion has a plurality of through holes formed at intervals in a circumferential direction on the outer circumferential side of the primary outer ring member and the outer circumferential side of the secondary outer ring member.

3. A torsional natural frequency adjustment method for adjusting a torsional natural frequency of a shaft system including a first shaft, a second shaft, and the coupling device according to claim 1 , comprising:
a measurement step of measuring the torsional natural frequency of the shaft system;
an evaluation step of evaluating a resonance state of the shaft system based on a measurement result of the torsional natural frequency; and
an adjustment step of adjusting the torsional natural frequency of the shaft system by attaching and detaching the additional weight according to an evaluation result of the resonance state.

4. The coupling device according to claim 1 ,
wherein the primary inner ring member includes a first body, which includes a first flange portion extending in the radial direction, at an axially one end of a first cylindrical portion, and a first bottom fixed to the first flange portion, and
wherein the primary inner ring member includes a second body, which includes a second flange portion extending in the radial direction, at an axially one end of a second cylindrical portion, and a second bottom fixed to the second flange portion.

Assignees

• Mitsubishi Heavy Ind Engine & Turbocharger Ltd

Inventors

• Nagai Naoyuki
• Satou Nobuaki

Classifications

• F16F15/322

  the rotating body being a shaft (F16F15/34, F16F15/36 take precedence) · CPC title

• F16D2300/22

  Vibration damping · CPC title

• F16F15/126

  consisting of at least one annular element surrounding the axis of rotation · CPC title

• F16F2222/08

  Inertia · CPC title

• F16F15/1435

  Elastomeric springs, i.e. made of plastic or rubber · CPC title