Title:
DEEP FOUNDATION EXCAVATOR
Document Type and Number:
WIPO Patent Application WO/2023/145819
Kind Code:
A1
Abstract:
An arm (10) has: first facing surfaces (a left side face plate (11A) of an arm body (11) and a left side plate (14A) of a sheave attachment member (14)) that face each other in the direction (left-right direction) orthogonal to the longitudinal direction (front-back direction) of the arm (10) and second facing surfaces (a right side face plate (11B) of the arm body (11) and a right side plate (14B) of the sheave attachment member (14)) that face each other in said direction. A first lifting sheave (19) is disposed on the outer surface of the left side plate (14A) of the sheave attachment member (14), and a second lifting sheave (23) is disposed on the outer surface of the left side face plate (11A) of the arm body (11). A first opening/closing sheave (21) is disposed on the outer surface of the right side plate (14B) of the sheave attachment member (14), and a second opening/closing sheave (30) and an opening/closing cylinder (31) are disposed on the outer surface of the right side face plate (11B) of the arm body (11).
Inventors:
INAMOTO AKIRA (JP)
SEKI SEIJI (JP)
ISOGAI KASUMI (JP)
SEKI SEIJI (JP)
ISOGAI KASUMI (JP)
Application Number:
PCT/JP2023/002422
Publication Date:
August 03, 2023
Filing Date:
January 26, 2023
Export Citation:
Assignee:
HITACHI CONSTRUCTION MACH CO (JP)
International Classes:
B66C3/06; E02F3/47
Domestic Patent References:
| WO2021199965A1 | 2021-10-07 |
Foreign References:
| JP2015001059A | 2015-01-05 | |||
| JP2001132008A | 2001-05-15 | |||
| JPS56159434A | 1981-12-08 | |||
| JP2003147800A | 2003-05-21 |
Attorney, Agent or Firm:
HIROWA PATENT FIRM (JP)
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