Title:
UNDERGROUND CURVED HOLE DRILLING DEVICE AND HOLE DRILLING CONTROL METHOD USING THIS DEVICE
Document Type and Number:
Japanese Patent JP3891345
Kind Code:
B2
Abstract:
PROBLEM TO BE SOLVED: To further accurately control a boring advance of the hole drilling rod tip having a diameter of about several cm by using an azimuth measuring sensor using a gyroscope.
SOLUTION: An azimuth/angle measuring part is arranged in a tip part of an excavating rod 2, and an excavating bit 3 is fixed to the tip side via a flexible tip rod 12 having the prescribed length. The azimuth/angle measuring part is provided with the azimuth measuring sensor 15 for measuring the direction in the horizontal direction, an inclination sensor 16 for measuring an angle in the vertical direction and a turning angle sensor 17 for measuring a turning angle. The flexible tip rod 12 is provided with a bend sensor 20 for detecting a bend. A three-dimensional position and the direction of the azimuth/angle measuring part are indexed by respective measuring data and the jacking length of a hole drilling rod, and a position of the excavating bit 3 is indexed in response to a measured value by the bend sensor 20.
Inventors:
Togashi Katsuo
Katsunori Ueda
Hiroyuki Ozaki
Kiyoshi Tanaka
Katsunori Ueda
Hiroyuki Ozaki
Kiyoshi Tanaka
Application Number:
JP2002319271A
Publication Date:
March 14, 2007
Filing Date:
November 01, 2002
Export Citation:
Assignee:
Goyo Construction Co., Ltd.
International Classes:
E21B7/04; E21D9/093; E21D9/06; E21D9/08; G01C15/00; (IPC1-7): E21D9/06; E21B7/04; E21D9/08
Domestic Patent References:
| JP2002242574A | ||||
| JP62060689U | ||||
| JP61191797A | ||||
| JP61191796A |
Attorney, Agent or Firm:
Masao Tanaka
Previous Patent: INSTRUMENT AND METHOD FOR SUTURING
Next Patent: COPPER MICRO-BALL AND METHOD FOR MANUFACTURING THE SAME
Next Patent: COPPER MICRO-BALL AND METHOD FOR MANUFACTURING THE SAME