Title:
BORING MACHINE
Document Type and Number:
Japanese Patent JPH1072991
Kind Code:
A
Abstract:
To make valve operation possible in one place by providing a water pressure regulating valve and measuring instruments together on the optional outer surface of a boring machine.
This boring machine 10 is provided with propulsion mechanism for propelling a boring rod 8, rotated receiving the rotation of a prime mover 2, axially forward. In this case, at least a boring water pressure regulating valve 23 for regulating boring water pressure and measuring instruments 24, 25 for displaying the measured value of boring water are provided on a boring water line leading to the tip of the boring rod 8 and arranged together on the optional outer surface of the boring machine 10.
Inventors:
HOSHINO YOSHIHIRO
MIZUNO MANABU
MIZUNO MANABU
Application Number:
JP23087996A
Publication Date:
March 17, 1998
Filing Date:
August 30, 1996
Export Citation:
Assignee:
MAEDA CONSTRUCTION
NITTOC CONSTRUCTION
NITTOC CONSTRUCTION
International Classes:
E21B3/02; E21B41/00; (IPC1-7): E21B3/02; E21B41/00
Attorney, Agent or Firm:
Tsutomu Toyama (2 outside)