Title:
DIGGING CONSTRUCTION METHOD AND ITS DEVICE
Document Type and Number:
Japanese Patent JP2004027773
Kind Code:
A
Abstract:
To provide digging technology for enabling digging even if a limit object is provided in an upper part.
A digging construction method is effective when there is the limit object 11 above the digging ground. In an excavator 1 digging the ground by pressing force by driving component of force of a loaded cylinder and rotation force of an earth auger device 7 by a self-running crane vehicle 2, a casing and a screw of the excavator 1 are divided from each other, and a first casing 10a on which a first coupling 12a is fixed is connected with a second casing 10b on which a second coupling 12b is fixed by a connection member 14 to dig step by step in this method and its device.
Inventors:
OKUDA MOTOTAKA
Application Number:
JP2002189587A
Publication Date:
January 29, 2004
Filing Date:
June 28, 2002
Export Citation:
Assignee:
SAKUTAKA KK
International Classes:
E21B7/20; E02D7/00; E02D7/16; E02D7/20; E02D7/22; E21B17/08; (IPC1-7): E02D7/00; E02D7/16; E02D7/20; E02D7/22; E21B7/20; E21B17/08
Attorney, Agent or Firm:
Motonari Tomisaki
Sadao Enjoji
Tsutomu Yamada
Sadao Enjoji
Tsutomu Yamada
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