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1. (WO2019049435) CONSTRUCTION MACHINE
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Pub. No.: WO/2019/049435 International Application No.: PCT/JP2018/019334
Publication Date: 14.03.2019 International Filing Date: 18.05.2018
IPC:
F15B 21/14 (2006.01) ,E02F 9/22 (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
21
Common features of fluid actuator systems; Fluid-pressure actuator systems or details thereof, not covered by any other group of this subclass
14
Energy-recuperation means
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
08
with only one servomotor
Applicants:
日立建機株式会社 HITACHI CONSTRUCTION MACHINERY CO., LTD. [JP/JP]; 東京都台東区東上野二丁目16番1号 16-1, Higashiueno 2-chome, Taito-ku, Tokyo 1100015, JP
Inventors:
土方 聖二 HIJIKATA Seiji; JP
釣賀 靖貴 TSURUGA Yasutaka; JP
石川 広二 ISHIKAWA Kouji; JP
高橋 究 TAKAHASHI Kiwamu; JP
星野 雅俊 HOSHINO Masatoshi; JP
Agent:
特許業務法人広和特許事務所 HIROWA PATENT FIRM; 東京都新宿区西新宿3丁目1番3号 西新宿小出ビル4階 4F., Nishishinjuku Koide Bldg., 1-3, Nishishinjuku 3-chome, Shinjuku-ku, Tokyo 1600023, JP
Priority Data:
2017-17406211.09.2017JP
Title (EN) CONSTRUCTION MACHINE
(FR) MACHINE DE CONSTRUCTION
(JA) 建設機械
Abstract:
(EN) In the present invention a hydraulic circuit (11) in a hydraulic shovel (1) comprises: a main hydraulic circuit (11A) that includes a boom cylinder (5D); a pilot hydraulic circuit (11B) for operating the boom cylinder (5D); and an oil recovery circuit (11A) that includes an accumulator (29). In this case, the oil recovery circuit (11C) comprises: a recovery control valve (31) for returning to the accumulator (29) pressurized oil discharged from the boom cylinder (5D); a main supply control valve (34) for supplying pressurized oil that has accumulated in the accumulator (29) to the main hydraulic circuit (11A); and a pilot supply control valve (37) for supplying pressurized oil that has accumulated in the accumulator (29) to the pilot hydraulic circuit (11B).
(FR) Dans la présente invention, un circuit hydraulique (11) dans une pelle hydraulique (1) comprend : un circuit hydraulique principal (11A) qui comprend un vérin de flèche (5D) ; un circuit hydraulique pilote (11B) permettant d'actionner le vérin de flèche (5D) ; et un circuit de récupération d'huile (11A) qui comprend un accumulateur (29). Dans ce cas, le circuit de récupération d'huile (11C) comprend : une soupape de commande de récupération (31) permettant de renvoyer, à l'accumulateur (29), de l'huile sous pression évacuée du vérin de flèche (5D) ; une soupape de commande d'alimentation principale (34) permettant de fournir de l'huile sous pression qui s'est accumulée dans l'accumulateur (29) au circuit hydraulique principal (11A) ; et une soupape de commande d'alimentation pilote (37) permettant de fournir de l'huile sous pression qui s'est accumulée dans l'accumulateur (29) au circuit hydraulique pilote (11B).
(JA) 油圧ショベル(1)の油圧回路(11)は、ブームシリンダ(5D)を含むメイン油圧回路(11A)と、ブームシリンダ(5D)を操作するためのパイロット油圧回路(11B)と、アキュムレータ(29)を含む回収油圧回路(11C)とを備えている。この場合、回収油圧回路(11C)には、ブームシリンダ(5D)から排出される圧油をアキュムレータ(29)に回収する回収制御弁(31)と、アキュムレータ(29)に蓄圧された圧油をメイン油圧回路(11A)に供給するメイン供給制御弁(34)と、アキュムレータ(29)に蓄圧された圧油をパイロット油圧回路(11B)に供給するパイロット供給制御弁(37)とを備えている。
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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, JO, 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 Office (AM, AZ, BY, KG, KZ, RU, TJ, TM)
European Patent Office (EPO) (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)