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Machine translation
1. (WO2012102488) HYDRAULIC SYSTEM FOR CONSTRUCTION MACHINE HAVING ELECTRONIC HYDRAULIC PUMP
Latest bibliographic data on file with the International Bureau   

Pub. No.:    WO/2012/102488    International Application No.:    PCT/KR2011/010081
Publication Date: 02.08.2012 International Filing Date: 26.12.2011
IPC:
F15B 13/042 (2006.01), E02F 9/22 (2006.01), F15B 9/08 (2006.01)
Applicants: DOOSAN INFRACORE CO., LTD. [KR/KR]; 7-11 Hwasu-dong, Dong-gu Incheon 401-020 (KR) (For All Designated States Except US).
LIM, Hyun Sik [KR/KR]; (KR) (For US Only).
JUNG, Woo Yong [KR/KR]; (KR) (For US Only)
Inventors: LIM, Hyun Sik; (KR).
JUNG, Woo Yong; (KR)
Agent: KIM, Kee-Hyo; 14F., Kukdong Building, 60-1 Chungmuro3-ka, Chung-ku Seoul 100-705 (KR)
Priority Data:
10-2011-0007073 24.01.2011 KR
Title (EN) HYDRAULIC SYSTEM FOR CONSTRUCTION MACHINE HAVING ELECTRONIC HYDRAULIC PUMP
(FR) SYSTÈME HYDRAULIQUE POUR UNE MACHINE DE CONSTRUCTION DOTÉE D'UNE POMPE HYDRAULIQUE ÉLECTRONIQUE
(KO) 전자유압펌프를 포함하는 건설기계의 유압 시스템
Abstract: front page image
(EN)The present invention pertains to a hydraulic system for a construction machine having an electronic hydraulic pump. More specifically, the hydraulic system temporarily drives the construction machine when the operation of the electronic control section that controls an electronic hydraulic pump is abnormal, particularly, when the electronic control section is uncontrollable because the operative amount of a joystick is not transmitted to the electronic control section. To this end, the electronic control section operates a center bypass valve so as to convert the entire system to an open type, sets neutral mode entry conditions (for example, keeping the maximum flow rate under a predetermined pressure for a predetermined time) and neutral mode departure conditions so as to recognize the neutral state of the joystick, recognizes the neutral state of the joystick using the same, and carries out the predetermined tilting angle control of a swash plate.
(FR)La présente invention concerne un système hydraulique pour une machine de construction comportant une pompe hydraulique électronique. Plus spécifiquement, le système hydraulique entraîne temporairement la machine de construction lorsque le fonctionnement de la section de commande électronique qui commande une pompe hydraulique électronique est anormal, en particulier lorsque la section de commande électronique est impossible à contrôler, car la grandeur opérationnelle d'un joystick n'est pas transmise à la section de commande électronique. Pour cela, la section de commande électronique commande une vanne de contournement centrale afin de convertir tout le système en un système ouvert, règle les conditions d'entrée en mode neutre (par exemple en maintenant le débit maximum sous une pression prédéterminée pendant une durée prédéterminée) et les conditions de sortie de mode neutre afin de reconnaître l'état neutre du joystick, reconnaît l'état neutre du joystick en utilisant celui-ci, et effectue la régulation prédéterminée d'angle d'inclinaison d'un plateau oscillant.
(KO)본 발명은 전자유압펌프를 포함하는 건설기계의 유압 시스템에 관한 것이며, 더욱 구체적으로는 전자유압펌프를 제어하는 전자제어부의 작동이 비정상적일 때, 특히 전자제어부로 조이스틱의 조작량이 전달되지 못하여 전자제어부가 제어 불능시 임시로 건설기계를 구동하는 유압 시스템에 관한 것으로, 이를 위하여 전자제어부는 센터바이패스 밸브를 구동하여 전체 시스템을 개방형으로 전환하고, 조이스틱의 중립 상태를 인식하기 위해, 중립 모드 진입 조건(예컨대, 소정 압력에서 소정 시간 동안 최대 유량 유지)과 중립 모드 탈출 조건을 설정한 후, 이를 이용하여 조이스틱의 중립 상태를 인식하고, 소정의 사판각 제어를 수행하는 중립 모드로 비상 제어를 수행할 수 있다.
Designated States: AE, AG, AL, AM, AO, AT, AU, AZ, BA, BB, BG, BH, BR, BW, BY, BZ, CA, CH, CL, CN, CO, CR, CU, CZ, DE, DK, DM, DO, DZ, EC, EE, EG, ES, FI, GB, GD, GE, GH, GM, GT, HN, HR, HU, ID, IL, IN, IS, JP, KE, KG, KM, KN, KP, KZ, LA, LC, LK, LR, LS, LT, LU, LY, MA, MD, ME, MG, MK, MN, MW, MX, MY, MZ, NA, NG, NI, NO, NZ, OM, PE, PG, PH, PL, PT, QA, RO, RS, RU, RW, 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 (BW, GH, GM, KE, LR, LS, MW, MZ, NA, RW, SD, SL, SZ, TZ, UG, ZM, ZW)
Eurasian Patent Organization (AM, AZ, BY, KG, KZ, MD, 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, ML, MR, NE, SN, TD, TG).
Publication Language: Korean (KO)
Filing Language: Korean (KO)