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1. WO2020196871 - EXCAVATOR

Publication Number WO/2020/196871
Publication Date 01.10.2020
International Application No. PCT/JP2020/014184
International Filing Date 27.03.2020
IPC
E02F 9/20 2006.01
EFIXED CONSTRUCTIONS
02HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL-SHIFTING
FDREDGING; SOIL-SHIFTING
9Component parts of dredgers or soil-shifting machines, not restricted to one of the kinds covered by groups E02F3/-E02F7/160
20Drives; Control devices
E02F 9/22 2006.01
EFIXED CONSTRUCTIONS
02HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL-SHIFTING
FDREDGING; SOIL-SHIFTING
9Component parts of dredgers or soil-shifting machines, not restricted to one of the kinds covered by groups E02F3/-E02F7/160
20Drives; Control devices
22Hydraulic or pneumatic drives
F15B 11/042 2006.01
FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
15FLUID-PRESSURE ACTUATORS; HYDRAULICS OR PNEUMATICS IN GENERAL
BSYSTEMS ACTING BY MEANS OF FLUIDS IN GENERAL; FLUID-PRESSURE ACTUATORS, e.g. SERVOMOTORS; DETAILS OF FLUID-PRESSURE SYSTEMS, NOT OTHERWISE PROVIDED FOR
11Servomotor systems without provision for follow-up action
02Systems essentially incorporating special features for controlling the speed or the actuating force or speed of an output member
04for controlling the speed
042by means in the feed line
F15B 11/044 2006.01
FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
15FLUID-PRESSURE ACTUATORS; HYDRAULICS OR PNEUMATICS IN GENERAL
BSYSTEMS ACTING BY MEANS OF FLUIDS IN GENERAL; FLUID-PRESSURE ACTUATORS, e.g. SERVOMOTORS; DETAILS OF FLUID-PRESSURE SYSTEMS, NOT OTHERWISE PROVIDED FOR
11Servomotor systems without provision for follow-up action
02Systems essentially incorporating special features for controlling the speed or the actuating force or speed of an output member
04for controlling the speed
044by means in the return line
F15B 11/08 2006.01
FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
15FLUID-PRESSURE ACTUATORS; HYDRAULICS OR PNEUMATICS IN GENERAL
BSYSTEMS ACTING BY MEANS OF FLUIDS IN GENERAL; FLUID-PRESSURE ACTUATORS, e.g. SERVOMOTORS; DETAILS OF FLUID-PRESSURE SYSTEMS, NOT OTHERWISE PROVIDED FOR
11Servomotor systems without provision for follow-up action
08with only one servomotor
F15B 21/14 2006.01
FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
15FLUID-PRESSURE ACTUATORS; HYDRAULICS OR PNEUMATICS IN GENERAL
BSYSTEMS ACTING BY MEANS OF FLUIDS IN GENERAL; FLUID-PRESSURE ACTUATORS, e.g. SERVOMOTORS; DETAILS OF FLUID-PRESSURE SYSTEMS, NOT OTHERWISE PROVIDED FOR
21Common features of fluid actuator systems; Fluid-pressure actuator systems or details thereof, not covered by any other group of this subclass
14Energy-recuperation means
Applicants
  • 住友重機械工業株式会社 SUMITOMO HEAVY INDUSTRIES, LTD. [JP]/[JP]
Inventors
  • 井辻 孔康 ITSUJI, Yoshiyasu
Agents
  • 伊東 忠重 ITOH, Tadashige
  • 伊東 忠彦 ITOH, Tadahiko
Priority Data
2019-06501928.03.2019JP
Publication Language Japanese (JA)
Filing Language Japanese (JA)
Designated States
Title
(EN) EXCAVATOR
(FR) EXCAVATRICE
(JA) ショベル
Abstract
(EN)
This excavator comprises a flow rate control valve that controls flow rate according to pilot pressure on each load side and bottom side of a plurality of hydraulic cylinders.
(FR)
Cette excavatrice comprend une soupape de régulation de débit qui régule le débit en fonction de la pression pilote sur chaque côté charge et côté inférieur d'une pluralité de cylindres hydrauliques.
(JA)
本発明の実施形態に係るショベルは、複数の油圧シリンダのロッド側とボトム側のそれぞれにパイロット圧に応じて流量を制御する流量制御弁を備える。
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