Title:
SHAFT EXCAVATION DEVICE, SHAFT EXCAVATION DEVICE SLIDE MECHANISM AND SHAFT EXCAVATION METHOD
Document Type and Number:
Japanese Patent JP2022062778
Kind Code:
A
Abstract:
To provide a shaft excavation device, a shaft excavation device slide mechanism, and a shaft excavation method capable of excavating under a cutting edge of a caisson skeleton regardless of an outer diameter of a shaft (caisson skeleton) without increasing the size of an excavation drive device.SOLUTION: According to the present invention, a housing 2 is slid toward a caisson skeleton 1 via a slide mechanism 4, so that a cutter 3 protruding to an outside of the housing 2 can excavate a bottom of the caisson skeleton 1. Since the ground inside the caisson skeleton 1 is excavated by moving the housing 2 along a rail 6 suspended in the radial direction of a gantry 5 and rotatably provided in the circumferential direction of the gantry 5, even when the outer diameter of the caisson skeleton 1 is increased, it is possible to suppress the increase in the size of the shaft excavation device such as a hydraulic motor OM for driving the cutter 3 and the cutter 3, and the housing 2 for accommodating the hydraulic motor OM.SELECTED DRAWING: Figure 3
Inventors:
SAITO SHIGERU
HAMADA YOSHIYUKI
TAKAHASHI TATSUYA
UCHIYAMA KEIJI
TOKUNAGA SUSUMU
OTSUKA KAZUHIRO
NAKAZAWA KOSUKE
HAMADA YOSHIYUKI
TAKAHASHI TATSUYA
UCHIYAMA KEIJI
TOKUNAGA SUSUMU
OTSUKA KAZUHIRO
NAKAZAWA KOSUKE
Application Number:
JP2020170906A
Publication Date:
April 21, 2022
Filing Date:
October 09, 2020
Export Citation:
Assignee:
KATO CONSTRUCTION CO LTD
TOA TONE BORING CO LTD
TOA TONE BORING CO LTD
International Classes:
E21B7/20
Attorney, Agent or Firm:
Hiromichi Kobayashi
Hidehisa Uzawa
Kazuaki Takashima
Hidehisa Uzawa
Kazuaki Takashima
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