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1. WO2022003085 - CONTROL SYSTEM OF AN ARM OF A LOADER VEHICLE (CWL)

Publication Number WO/2022/003085
Publication Date 06.01.2022
International Application No. PCT/EP2021/068126
International Filing Date 01.07.2021
IPC
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
Applicants
  • CNH INDUSTRIAL ITALIA S.P.A. [IT]/[IT] (AE, AG, AL, AM, AO, AT, AU, AZ, BA, BB, BE, BF, BG, BH, BJ, BN, BR, BW, BY, BZ, CA, CF, CG, CH, CI, CL, CM, CO, CR, CU, CY, CZ, DE, DJ, DK, DM, DO, DZ, EC, EE, EG, ES, FI, FR, GA, GB, GD, GE, GH, GM, GN, GQ, GR, GT, GW, HN, HR, HU, ID, IE, IL, IN, IR, IS, IT, JO, JP, KE, KG, KH, KM, KN, KP, KR, KW, KZ, LA, LC, LK, LR, LS, LT, LU, LV, LY, MA, MC, MD, ME, MG, MK, ML, MN, MR, MT, MW, MX, MY, MZ, NA, NE, NG, NI, NL, NO, NZ, OM, PA, PE, PG, PH, PL, PT, QA, RO, RS, RU, RW, SA, SC, SD, SE, SG, SI, SK, SL, SM, SN, ST, SV, SY, SZ, TD, TG, TH, TJ, TM, TN, TR, TT, TZ, UA, UG, UZ, VC, VN, WS, ZA, ZM, ZW)
  • CNH INDUSTRIAL AMERICA LLC [US]/[US] (US)
  • CNH (CHINA) MANAGEMENT CO., LTD [CN]/[CN] (CN)
Inventors
  • GARRAMONE, Adriano
  • GIRARDI, Mario
  • GRAVILI, Andrea
  • LIBERTI, Stefano
Agents
  • PREVITI, Gianluca
Priority Data
10202000001592201.07.2020IT
Publication Language English (en)
Filing Language English (EN)
Designated States
Title
(EN) CONTROL SYSTEM OF AN ARM OF A LOADER VEHICLE (CWL)
(FR) SYSTÈME DE COMMANDE D'UN BRAS D'UN VÉHICULE CHARGEUR (CWL)
Abstract
(EN) Method of controlling an arm (B) of a mechanical shovel (CWL), in which the mechanical shovel is equipped with a hydrostatic transmission (HY) comprising a first hydraulic pump (HP) arranged to power only a hydraulic motor (HM), a second pump (P) arranged to feed vehicle hydraulic actuators (A1, A2,...), including a first actuator (A1) arranged to control at least the lifting of the arm (B), a hydraulic accumulator (ACC) to accumulate energy under form of pressure, the method comprising the following steps: pressurization of the accumulator exclusively by said hydraulic motor, operating as a pump, during a regenerative braking, supplementation of said second pump by means of said accumulator (ACC) exclusively to supply the first actuator during at least the lifting of the arm (B).
(FR) L'invention concerne un procédé de commande d'un bras (B) d'une pelle mécanique (CWL), la pelle mécanique étant équipée d'une transmission hydrostatique (HY) comprenant une première pompe hydraulique (HP) agencée pour alimenter uniquement un moteur hydraulique (HM), une seconde pompe (P) agencée pour alimenter des actionneurs hydrauliques de véhicule (A1, A2, ...), comprenant un premier actionneur (A1) agencé pour commander au moins le levage du bras (B), un accumulateur hydraulique (ACC) pour accumuler de l'énergie sous la forme de pression, le procédé comprenant les étapes suivantes : mise sous pression de l'accumulateur exclusivement par ledit moteur hydraulique, fonctionnant comme pompe, lors d'un freinage régénératif, ajout de ladite seconde pompe par ledit accumulateur (ACC) exclusivement pour alimenter le premier actionneur lors d'au moins le levage du bras (B).
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