Title:
EXCAVATOR AND CONTROL VALVE FOR EXCAVATOR
Document Type and Number:
WIPO Patent Application WO/2017/164175
Kind Code:
A1
Abstract:
An excavator according to an embodiment of the present invention comprises an undercarriage (1), a rotating platform (3) that is mounted on the undercarriage (1), an engine (11) that is provided to the rotating platform (3), a main pump (14) that is linked to the engine (11), an arm cylinder (8) that moves an arm (5) as a result of being driven by hydraulic fluid that is discharged by the main pump (14), a control valve (176A) that controls the flow of hydraulic fluid that flows from the main pump (14) to the arm cylinder (8), a control valve (177A) that controls the flow of hydraulic fluid from the arm cylinder (8) to a hydraulic fluid tank, and a controller (30) that controls the opening and closing of the control valve (177A).
Inventors:
MISAKI YOUJI (JP)
Application Number:
PCT/JP2017/011235
Publication Date:
September 28, 2017
Filing Date:
March 21, 2017
Export Citation:
Assignee:
SUMITOMO(S H I ) CONSTRUCTION MACHINERY CO LTD (JP)
International Classes:
E02F9/22; F15B11/00; F15B11/042; F15B11/044; F15B21/14
Foreign References:
| JP2014074433A | 2014-04-24 | |||
| JP2008025706A | 2008-02-07 | |||
| JPH0425001U | 1992-02-28 |
Other References:
See also references of EP 3434832A4
Attorney, Agent or Firm:
ITOH, Tadashige et al. (JP)
Download PDF:
Previous Patent: ELECTROMAGNETIC SHIELDING FILM
Next Patent: WIRE CONTAINING FLUX FOR GAS SHIELD ARC WELDING
Next Patent: WIRE CONTAINING FLUX FOR GAS SHIELD ARC WELDING