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1. (WO2017099230) HYDRAULIC DRIVE SYSTEM
Latest bibliographic data on file with the International Bureau

Pub. No.: WO/2017/099230 International Application No.: PCT/JP2016/086766
Publication Date: 15.06.2017 International Filing Date: 09.12.2016
IPC:
F15B 11/00 (2006.01) ,E02F 9/22 (2006.01) ,F15B 11/042 (2006.01) ,F15B 11/05 (2006.01) ,F15B 11/08 (2006.01)
F MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
15
FLUID-PRESSURE ACTUATORS; HYDRAULICS OR PNEUMATICS IN GENERAL
B
SYSTEMS ACTING BY MEANS OF FLUIDS IN GENERAL; FLUID-PRESSURE ACTUATORS, e.g. SERVOMOTORS; DETAILS OF FLUID-PRESSURE SYSTEMS, NOT OTHERWISE PROVIDED FOR
11
Servomotor systems without provision for follow-up action
E FIXED CONSTRUCTIONS
02
HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL-SHIFTING
F
DREDGING; SOIL-SHIFTING
9
Component parts of dredgers or soil-shifting machines, not restricted to one of the kinds covered by groups E02F3/-E02F7/160
20
Drives; Control devices
22
Hydraulic or pneumatic drives
F MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
15
FLUID-PRESSURE ACTUATORS; HYDRAULICS OR PNEUMATICS IN GENERAL
B
SYSTEMS ACTING BY MEANS OF FLUIDS IN GENERAL; FLUID-PRESSURE ACTUATORS, e.g. SERVOMOTORS; DETAILS OF FLUID-PRESSURE SYSTEMS, NOT OTHERWISE PROVIDED FOR
11
Servomotor systems without provision for follow-up action
02
Systems essentially incorporating special features for controlling the speed or the actuating force or speed of an output member
04
for controlling the speed
042
by regulating means in feed line
F MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
15
FLUID-PRESSURE ACTUATORS; HYDRAULICS OR PNEUMATICS IN GENERAL
B
SYSTEMS ACTING BY MEANS OF FLUIDS IN GENERAL; FLUID-PRESSURE ACTUATORS, e.g. SERVOMOTORS; DETAILS OF FLUID-PRESSURE SYSTEMS, NOT OTHERWISE PROVIDED FOR
11
Servomotor systems without provision for follow-up action
02
Systems essentially incorporating special features for controlling the speed or the actuating force or speed of an output member
04
for controlling the speed
05
specially adapted to maintain constant speed, e.g. pressure-compensated, load-responsive
F MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
15
FLUID-PRESSURE ACTUATORS; HYDRAULICS OR PNEUMATICS IN GENERAL
B
SYSTEMS ACTING BY MEANS OF FLUIDS IN GENERAL; FLUID-PRESSURE ACTUATORS, e.g. SERVOMOTORS; DETAILS OF FLUID-PRESSURE SYSTEMS, NOT OTHERWISE PROVIDED FOR
11
Servomotor systems without provision for follow-up action
08
with only one servomotor
Applicants:
川崎重工業株式会社 KAWASAKI JUKOGYO KABUSHIKI KAISHA [JP/JP]; 兵庫県神戸市中央区東川崎町3丁目1番1号 1-1, Higashikawasaki-cho 3-chome, Chuo-ku, Kobe-shi, Hyogo 6508670, JP
Inventors:
近藤 哲弘 KONDO, Akihiro; --
伊藤 誠 ITO, Makoto; --
Agent:
特許業務法人 有古特許事務所 PATENT CORPORATE BODY ARCO PATENT OFFICE; 兵庫県神戸市中央区東町123番地の1 貿易ビル3階 3rd Fl., Bo-eki Bldg., 123-1, Higashimachi, Chuo-ku, Kobe-shi, Hyogo 6500031, JP
Priority Data:
2015-24076210.12.2015JP
Title (EN) HYDRAULIC DRIVE SYSTEM
(FR) SYSTÈME D'ENTRAÎNEMENT HYDRAULIQUE
(JA) 油圧駆動システム
Abstract:
(EN) This hydraulic drive system is provided with a control valve device for an actuator, an operation device including an operation lever, a variable-capacity-type pump, and a flow rate adjustment device for controlling the discharge flow rate of the pump. The control valve device is configured so that the open area of a control valve reaches a reference open area when the incline angle of the operation lever is a predetermined value, and the open area of the control valve reaches a maximum open area when the incline angle of the operation lever is a maximum value. Until the incline angle of the operation lever reaches the predetermined value, the flow rate adjustment device increases the discharge flow rate of the pump in accordance with the incline angle of the operation lever so that the pressure difference between the discharge pressure of the pump and the load pressure of the actuator is constant; when the incline angle of the operation lever has reached the predetermined value, the flow rate adjustment device controls the discharge flow rate of the pump so that the flow rate through the control valve reaches the maximum flow rate of the actuator when the pressure difference is constant; and when the incline angle of the operation lever is between the predetermined value and the maximum value, the flow rate adjustment device regulates the maximum discharge flow rate of the pump so that the discharge flow rate of the pump is maintained at the maximum flow rate of the actuator.
(FR) La présente invention concerne un système d'entraînement hydraulique comportant un dispositif de soupape de commande pour un actionneur, un dispositif de fonctionnement comprenant un levier d'actionnement, une pompe de type à capacité variable et un dispositif de régulation de débit permettant de réguler le débit de décharge de la pompe. Le dispositif de soupape de commande est conçu pour que la surface ouverte d'une soupape de commande atteigne une surface ouverte de référence lorsque l'angle d'inclinaison du levier d'actionnement est une valeur prédéfinie et que la surface ouverte de la soupape de commande atteigne une surface ouverte maximale lorsque l'angle d'inclinaison du levier d'actionnement est une valeur maximale. Jusqu'à ce que l'angle d'inclinaison du levier d'actionnement atteigne la valeur prédéfinie, le dispositif de régulation de débit augmente le débit de décharge de la pompe en fonction de l'angle d'inclinaison du levier d'actionnement, de sorte que la différence de pression entre la pression de décharge de la pompe et la pression de charge de l'actionneur soit constante ; lorsque l'angle d'inclinaison du levier d'actionnement a atteint la valeur prédéfinie, le dispositif de régulation de débit commande le débit de décharge de la pompe de sorte que le débit à travers la soupape de commande atteigne le débit maximal de l'actionneur lorsque la différence de pression est constante ; et lorsque l'angle d'inclinaison du levier d'actionnement est compris entre la valeur prédéfinie et la valeur maximale, le dispositif de régulation de débit régule le débit de décharge maximal de la pompe de sorte que le débit de décharge de la pompe soit maintenu au débit maximal de l'actionneur.
(JA) 油圧駆動システムは、アクチュエータ用の制御弁装置と、操作レバーを含む操作装置と、可変容量型のポンプと、ポンプの吐出流量を制御する流量調整装置と、を備え、制御弁装置は、制御弁の開口面積が、操作レバーの傾倒角が所定値となったときに基準開口面積となり、操作レバーの傾倒角が最大値となったときに最大開口面積となるように構成され、流量調整装置は、操作レバーの傾倒角が所定値になるまでは、ポンプの吐出圧とアクチュエータの負荷圧との差圧が一定となるようにポンプの吐出流量を操作レバーの傾倒角に応じて増加させ、操作レバーの傾倒角が所定値になったときは、制御弁の通過流量が差圧が一定であるときにアクチュエータ最大流量となるようにポンプの吐出流量を制御し、操作レバーの傾倒角が所定値と最大値の間にあるときはポンプの吐出流量がアクチュエータ最大流量に維持されるように、ポンプの最大吐出流量を規定する。
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Designated States: AE, AG, AL, AM, AO, AT, AU, AZ, BA, BB, BG, BH, BN, BR, BW, BY, BZ, CA, CH, CL, CN, CO, CR, CU, CZ, DE, DJ, DK, DM, DO, DZ, EC, EE, EG, ES, FI, GB, GD, GE, GH, GM, GT, HN, HR, HU, ID, IL, IN, IR, IS, JP, KE, KG, KH, KN, KP, KR, KW, KZ, LA, LC, LK, LR, LS, LU, LY, MA, MD, ME, MG, MK, MN, MW, MX, MY, MZ, NA, NG, NI, NO, NZ, OM, PA, PE, PG, PH, PL, PT, QA, RO, RS, RU, RW, SA, SC, SD, SE, SG, SK, SL, SM, ST, SV, SY, TH, TJ, TM, TN, TR, TT, TZ, UA, UG, US, UZ, VC, VN, ZA, ZM, ZW
African Regional Intellectual Property Organization (ARIPO) (BW, GH, GM, KE, LR, LS, MW, MZ, NA, RW, SD, SL, ST, SZ, TZ, UG, ZM, ZW)
Eurasian Patent Organization (AM, AZ, BY, KG, KZ, RU, TJ, TM)
European Patent Office (AL, AT, BE, BG, CH, CY, CZ, DE, DK, EE, ES, FI, FR, GB, GR, HR, HU, IE, IS, IT, LT, LU, LV, MC, MK, MT, NL, NO, PL, PT, RO, RS, SE, SI, SK, SM, TR)
African Intellectual Property Organization (BF, BJ, CF, CG, CI, CM, GA, GN, GQ, GW, KM, ML, MR, NE, SN, TD, TG)
Publication Language: Japanese (JA)
Filing Language: Japanese (JA)
Also published as:
JPWO2017099230US20170370382CN107532618