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Machine translation
1. (WO2011021859) STEERING DEVICE FOR CONSTRUCTION MACHINERY
Latest bibliographic data on file with the International Bureau   

Pub. No.:    WO/2011/021859    International Application No.:    PCT/KR2010/005481
Publication Date: 24.02.2011 International Filing Date: 19.08.2010
IPC:
B62D 5/07 (2006.01), B62D 5/06 (2006.01), E02F 9/02 (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).
JANG, In Pyo [KR/KR]; (KR) (For US Only)
Inventors: JANG, In Pyo; (KR)
Agent: LEE, Byungchul; 14F., Kukdong Building, 60-1 Chungmuro3-ka, Chung-ku Seoul 100-705 (KR)
Priority Data:
10-2009-0076479 19.08.2009 KR
10-2010-0080089 19.08.2010 KR
Title (EN) STEERING DEVICE FOR CONSTRUCTION MACHINERY
(FR) DISPOSITIF DE DIRECTION POUR ENGIN DE CHANTIER
(KO) 건설기계의 조향 장치
Abstract: front page image
(EN)The present invention relates to construction machinery such as wheel loaders, which comprises a steering actuator, a hydraulic pump able to discharge operating oil in two directions under drive by means of a swash plate, a pair of drive oil ducts constituting a closed loop connecting the steering actuator and the hydraulic pump, and a pump control unit which receives input in the form of signals in response to manipulation of a steering means by a driver; wherein the pump control unit comprises a swash-plate driving cylinder which is connected at one end to the swash plate (21) and is driven and varies the angle of inclination of the swash plate when operating oil is supplied and thereby varies the volume of discharge and the direction of discharge of the hydraulic pump, and a swash-plate control valve which receives input in the form of signals in response to manipulation of the steering means by the driver and is thereby turned around and so controls the amount and the direction of the operating oil supplied to the swash-plate driving cylinder.
(FR)L'invention porte sur des engins de chantier tels que des chargeuses sur roues, qui comprennent un actionneur de direction, une pompe hydraulique capable de refouler de l'huile de travail dans deux directions pendant le travail au moyen d'un plateau oscillant, deux conduits d'huile de travail qui constituent une boucle fermée reliant l'actionneur de direction à la pompe hydraulique, et une unité de commande de pompe qui reçoit une entrée sous la forme de signaux en réponse à la manipulation d'un moyen de direction par un conducteur ; l'unité de commande de pompe comprenant un vérin de commande du plateau oscillant qui est reliée à une extrémité du plateau oscillant (21) et qui est commandée et fait varier l'angle d'inclinaison du plateau oscillant lorsque de l'huile de travail est alimentée et fait varier par ce moyen le volume de refoulement et le sens du refoulement de la pompe hydraulique, et une soupape de commande du plateau oscillant qui reçoit une entrée sous la forme de signaux en réponse à la manipulation du moyen de direction par le conducteur et qui, sous cet effet, est tournée et commande ainsi le débit et le sens de l'huile de travail envoyée au vérin d'entraînement du plateau oscillant.
(KO)본 발명은 휠 로더와 같은 건설기계에 관한 것으로서, 조향 액추에이터와, 사판의 구동에 의해 양방향으로 작동유의 토출이 가능한 유압 펌프와, 상기 조향 액추에이터와 상기 유압펌프를 연결하여 폐회로를 구성시키는 한 쌍의 구동 유로와, 운전자의 조향 수단 조작에 대응되는 신호를 입력받아 상기 유압펌프의 사판을 제어하는 펌프 제어 유닛을 포함하며, 상기 펌프 제어 유닛은, 일측이 상기 사판(21)과 연결되어, 작동유의 공급시 구동되어 사판의 경사각을 변환시킴으로써 상기 유압펌프의 토출량 및 토출방향을 변환시키는 사판 구동 실린더와, 상기 운전자의 조향 수단 조작에 대응되는 신호를 입력받아 절환되어 상기 사판 구동 실린더로 공급되는 작동유의 공급량 및 공급방향을 제어하는 사판 제어 밸브를 포함한다.
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, RO, RS, RU, 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, 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, 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)