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1. WO2018147261 - FLUID PRESSURE CIRCUIT

Publication Number WO/2018/147261
Publication Date 16.08.2018
International Application No. PCT/JP2018/003973
International Filing Date 06.02.2018
IPC
F15B 21/14 2006.1
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
E02F 9/22 2006.1
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 11/044 2006.1
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
CPC
E02F 9/2203
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 E02F3/00 - E02F7/00
20Drives; Control devices
22Hydraulic or pneumatic drives
2203Arrangements for controlling the attitude of actuators, e.g. speed, floating function
E02F 9/2217
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 E02F3/00 - E02F7/00
20Drives; Control devices
22Hydraulic or pneumatic drives
2217with energy recovery arrangements, e.g. using accumulators, flywheels
E02F 9/2285
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 E02F3/00 - E02F7/00
20Drives; Control devices
22Hydraulic or pneumatic drives
2278Hydraulic circuits
2285Pilot-operated systems
E02F 9/2296
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 E02F3/00 - E02F7/00
20Drives; Control devices
22Hydraulic or pneumatic drives
2278Hydraulic circuits
2296Systems with a variable displacement pump
F15B 11/044
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; ; Circuits therefor
02Systems essentially incorporating special features for controlling the speed or actuating force of an output member
04for controlling the speed
044by means in the return line ; , i.e. "meter out"
F15B 13/022
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
13Details of servomotor systems
02Fluid distribution or supply devices characterised by their adaptation to the control of servomotors
022Flow-dividers; Priority valves
Applicants
  • イーグル工業株式会社 EAGLE INDUSTRY CO., LTD. [JP]/[JP]
Inventors
  • 嶋田 佳幸 SHIMADA Yoshiyuki
Agents
  • 重信 和男 SHIGENOBU Kazuo
  • 溝渕 良一 MIZOBUCHI Ryoichi
  • 石川 好文 ISHIKAWA Yoshihumi
  • 秋庭 英樹 AKIBA Hideki
  • 堅田 多恵子 KATADA Taeko
  • 林 道広 HAYASHI Michihiro
Priority Data
2017-02301210.02.2017JP
Publication Language Japanese (ja)
Filing Language Japanese (JA)
Designated States
Title
(EN) FLUID PRESSURE CIRCUIT
(FR) CIRCUIT DE PRESSION DE FLUIDE
(JA) 流体圧回路
Abstract
(EN) Provided is a fluid pressure circuit that can smoothly control a rod of a cylinder device controlled according to an operation command. A fluid pressure circuit (52) comprises: a tank (8) that stores a fluid, a fluid pressure actuator (2) that pressurizes the fluid in the tank (8); a cylinder device (5) that expands and contracts due to the pressurized fluid from the fluid pressure actuator (2); a flow control valve (4) that is disposed between the fluid pressure actuator (2) and the cylinder device (5), and switches the flow path of the pressurized fluid, and that discharges returning fluid from the cylinder device (5) via a first throttle (As); a regenerative variable switching valve (9) that discharges returning fluid from the cylinder device (5) to the flow control valve (4) during non-regeneration and branches and discharges some of the returning fluid via a second throttle (Ab) during regeneration; a regenerative motor (10) driven in a regenerative manner by the fluid branched by the regenerative variable switching valve (9); and a third throttle (Ax) that is connected in series to the first throttle (As) and that limits the flow rate of the returning fluid during regeneration.
(FR) L'invention concerne un circuit de pression de fluide qui peut commander sans à-coups une tige d'un dispositif de cylindre commandé selon une instruction de fonctionnement. Un circuit de pression de fluide (52) comprend : un réservoir (8) qui stocke un fluide, un actionneur de pression de fluide (2) qui met sous pression le fluide dans le réservoir (8) ; un dispositif de cylindre (5) qui se dilate et se contracte en raison du fluide sous pression provenant de l'actionneur de pression de fluide (2) ; une vanne de commande d'écoulement (4) qui est disposée entre l'actionneur de pression de fluide (2) et le dispositif de cylindre (5), et commute le trajet d'écoulement du fluide sous pression, et qui évacue le fluide de retour provenant du dispositif de cylindre (5) par l'intermédiaire d'un premier étrangleur (As) ; une vanne de commutation variable régénérative (9) qui évacue le fluide de retour du dispositif de cylindre (5) vers la vanne de commande d'écoulement (4) pendant la non-régénération et raccorde et décharge une partie du fluide de retour par l'intermédiaire d'un deuxième étrangleur (Ab) pendant la régénération ; un moteur régénératif (10) entraîné de manière régénérative par le fluide raccordé par la vanne de commutation variable régénérative (9) ; et un troisième étrangleur (Ax) qui est connecté en série au premier étrangleur (As) et qui limite le débit du fluide de retour pendant la régénération.
(JA) 操作指令に応じて制御されるシリンダ装置のロッドを円滑に制御できる流体圧回路を提供する。 流体圧回路(52)は、流体を貯蔵するタンク(8)と、タンク(8)内の流体を加圧する流体圧アクチュエータ(2)と、流体圧アクチュエータ(2)からの加圧流体によって伸縮するシリンダ装置(5)と、流体圧アクチュエータ(2)とシリンダ装置(5)との間に配置され加圧流体の流路を切り換えるとともに、シリンダ装置(5)からの戻り流体を第1の絞り(As)を介して排出する流量制御弁(4)と、非回生時にシリンダ装置(5)からの戻り流体を流量制御弁(4)に排出するとともに、回生時に戻り流体の一部を分岐させ第2の絞り(Ab)を介して排出する回生可変切換弁(9)と、回生可変切換弁(9)により分岐された流体により回生駆動される回生モータ(10)と、回生時に第1の絞り(As)に直列接続され戻り流体の流量を制限する第3の絞り(Ax)と、を備える。
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