Three axial displacement measuring apparatus

• US 7,275,330 B2
• Filed: 10/31/2005
• Issued: 10/02/2007
• Est. Priority Date: 10/30/2004
• Status: Expired due to Fees

• Current Assignee: Korea Electric Power Corporation (Government of South Korea)
• Original Assignee: Korea Electric Power Corporation (Government of South Korea)
• Inventors: Song, Gee-Wook, Kim, Bum Shin, Hyun, Jung-Seob, Cho, Sun Young
• Primary Examiner(s): Fulton; Christopher W
• Application Number:
  US11/262,686
• Publication Number:
  US 20060107542A1
• Time in Patent Office: 701 Days
• Field of Search: 335/03
• US Class Current: 33/503
• CPC Class Codes: G01B 5/008 using coordinate measuring machines

Abstract

Disclosed is a three-axial displacement measuring apparatus. The three-axial displacement measuring apparatus includes: a fixation grip fixed to one surface of a hanger supporting a structure to be measured; a universal joint connected to the fixation grip which is capable of rotating by 360 degrees; a link section being connected to the universal joint and having at least one angle sensor; an angle sensor section connected to the link section, for measuring angles; and a three-axial displacement measuring section for calculating three-axial displacement values of the measured structure by using the angle values measured by the angle sensor section.

Claims

1. A three-axial displacement measuring apparatus comprising:

a fixation grip fixed to one surface of a hanger supporting a structure to be measured;

a universal joint connected to the fixation grip and formed of an aluminum alloy wherein the universal joint is capable of rotating by 360 degrees, has the fixation grip moved in connection with the movement of the hanger and moves in connection with the movement of the fixation grip so as to have free moment;

a link section being connected to the universal joint;

an angle sensor section connected to the link section and having at least one angle sensor, for measuring angles; and

a three-axial displacement measuring section for calculating three-axial displacement values of the measured structure by using the angle values measured by the angle sensor section.

2. A three-axial displacement measuring apparatus according to claim 1, wherein the fixation grip is formed of a material having superior thermal resistance, hardness, and corrosion resistance.

3. A three-axial displacement measuring apparatus according to claim 1, wherein the link section is formed of an aluminum alloy and includes a first link and a second link to constitute a joint structure.

4. A three-axial displacement measuring apparatus according to claim 1, wherein the angle sensor section is formed of an aluminum alloy and includes a first angle sensor, a second angle sensor, and a third angle sensor.

5. A three-axial displacement measuring apparatus according to claim 4, wherein the first angle sensor measures the angle between the first link and a fixed plane, with the fixation grip being the fixed plane.

6. A three-axial displacement measuring apparatus according to claim 4, wherein the second angle sensor connects the first link and the second link and measures the angle between the two links.

7. A three-axial displacement measuring apparatus according to claim 4, wherein the third angle sensor measures the plane rotation angle on the fixed plane.

8. A three-axial displacement measuring apparatus according to claim 1, wherein the three-axial displacement measuring section has a hard plated outer case using an aluminum alloy having an increased cross-section in order to secure the safety of the sensors, lower the weight, and enhance the radiation of heat.

9. A three-axial displacement measuring apparatus comprising:

a fixation grip fixed to one surface of a hanger supporting a structure to be measured;

a universal joint connected to the fixation grip, the universal joint being capable of rotating by 360 degrees;

a link section being connected to the universal joint and having at least one angle sensor;

an angle sensor section connected to the link section, for measuring angles;

a three-axial displacement measuring section for calculating three-axial displacement values of the measured structure by using the angle values measured by the angle sensor section;

the angle sensor section includes a first angle sensor, a second angle sensor, and a third angle sensor;

wherein the first angle sensor measures the angle between the first link and a fixed plane, with the fixation grip being the fixed plane;

wherein the second angle sensor connects the first link and the second link and measures the angle between the two links; and

wherein the third angle sensor measures the plane rotation angle on the fixed plane.