Title:
BORING EQUIPMENT
Document Type and Number:
Japanese Patent JP2023019132
Kind Code:
A
Abstract:
To provide boring equipment in which core clogging can be avoided with automatic control.SOLUTION: Boring equipment 100 comprises: a rotationally driving mechanism 30 which rotationally drives a drilling rod 10; a linearly driving mechanism 40 which linearly drives the drilling rod 10; a water supply pump 51 which supplies water toward the tip of the drilling rod 10; and a controller 60. The controller 60 is configured to be able to perform: speed control of controlling the linearly driving mechanism 40 in such a way as to increase the feeding force F when the feeding speed V of the advancement of the drilling rod 10 is less than the target speed Vt, and re-drilling control of controlling the linearly driving mechanism 40 in such a way as to move the drilling rod 10 forward again after moving the drilling rod backward by a prescribed amount. When at least one of the feeding speed V of the drilling rod 10, the water supply pressure of the water supply pump 51 and the water supply amount of the water supply pump 51 does not satisfy a control continuation condition, control on the linearly driving mechanism 40 is switched from the speed control to the re-drilling control.SELECTED DRAWING: Figure 3
Inventors:
OKAYAMA MAKOTO
OUCHI HITOSHI
HAYASHI KENJI
MATSUMOTO TAKAYA
YAMASHITA MAKOTO
NAKAZAWA KOSUKE
TAKAHASHI KIMINORI
KUMEGAWA MASANORI
MIKAMI YUICHI
NAKAJIMA MASAKAZU
KOGA KENICHIRO
OUCHI HITOSHI
HAYASHI KENJI
MATSUMOTO TAKAYA
YAMASHITA MAKOTO
NAKAZAWA KOSUKE
TAKAHASHI KIMINORI
KUMEGAWA MASANORI
MIKAMI YUICHI
NAKAJIMA MASAKAZU
KOGA KENICHIRO
Application Number:
JP2021123625A
Publication Date:
February 09, 2023
Filing Date:
July 28, 2021
Export Citation:
Assignee:
KAJIMA CORP
TOA TONE BORING CO LTD
CHEMICAL GROUT CO
NITTOC CONSTRUCTION
TOA TONE BORING CO LTD
CHEMICAL GROUT CO
NITTOC CONSTRUCTION
International Classes:
E21B3/02; E21B25/00
Attorney, Agent or Firm:
Patent Attorney Corporation Goto Patent Office