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1. (WO2019065925) WORKING MACHINE
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Pub. No.: WO/2019/065925 International Application No.: PCT/JP2018/036148
Publication Date: 04.04.2019 International Filing Date: 27.09.2018
IPC:
F15B 11/02 (2006.01) ,E02F 9/22 (2006.01) ,F15B 11/028 (2006.01) ,F15B 11/08 (2006.01) ,F15B 11/17 (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
02
Systems essentially incorporating special features for controlling the speed or the actuating force or speed of an output member
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
028
for controlling the actuating force
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
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
16
with two or more servomotors
17
using two or more pumps
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:
白土 柊 SHIRATO Shu; JP
白川 賀裕 SHIRAKAWA Yoshihiro; JP
楢▲崎▼ 昭広 NARAZAKI Akihiro; JP
小高 克明 KODAKA Katsuaki; JP
Agent:
特許業務法人 武和国際特許事務所 THE PATENT BODY CORPORATE TAKEWA INTERNATIONAL PATENT OFFICE; 東京都港区西新橋3丁目13番3号 ユニゾ西新橋三丁目ビル UNIZO Nishishimbashi 3-chome Bldg., 13-3, Nishishimbashi 3-chome, Minato-ku, Tokyo 1050003, JP
Priority Data:
2017-19168629.09.2017JP
Title (EN) WORKING MACHINE
(FR) ENGIN DE CHANTIER
(JA) 作業機械
Abstract:
(EN) The present invention provides a technique for efficiently using energy when simultaneously performing a revolving operation and a boom raising operation. In a specific state in which hydraulic oil is supplied from a first hydraulic pump (2) to a boom cylinder (7a) through a first control valve (6a) and hydraulic oil is supplied from a second hydraulic pump (3) to a revolving motor (7b) through a second control valve (6b) by simultaneously performing an operation of raising a boom (25) and an operation of revolving a revolving body (21), a controller (10) of a hydraulic driving device (60): outputs a command current to open a boom operation pressure cut valve (13) and supplies a portion of the hydraulic oil, supplied from the second hydraulic pump (3) to the revolving motor (7b), to the boom cylinder (7a) through a third control valve (6c) when the revolving motor (7b) has not reached a normal revolving state; and outputs a command current to close the boom operation pressure cut valve (13) when the revolving motor (7b) is in the normal revolving state.
(FR) La présente invention concerne une technique qui permet d'utiliser efficacement de l'énergie lors de l'exécution simultanée d'une opération de rotation et d'une opération d'élévation de flèche. Dans un état précis dans lequel de l'huile hydraulique est fournie par une première pompe hydraulique (2) à un vérin de flèche (7a) par l'intermédiaire d'une première soupape de commande (6a) et de l'huile hydraulique est fournie par une seconde pompe hydraulique (3) à un moteur rotatif (7b) par l'intermédiaire d'une deuxième soupape de commande (6b) en effectuant simultanément une opération consistant à soulever une flèche (25) et une opération consistant à faire tourner un corps rotatif (21), un dispositif de commande (10) d'un dispositif d'entraînement hydraulique (60) : fournit un courant de commande pour ouvrir une soupape de coupure de pression (13) d'actionnement de flèche et fournit une partie de l'huile hydraulique, fournie par la seconde pompe hydraulique (3) au moteur rotatif (7b), au vérin de flèche (7a) par l'intermédiaire d'une troisième soupape de commande (6c) lorsque le moteur rotatif (7b) n'a pas atteint un état de rotation normal ; fournit un courant de commande pour fermer la soupape de coupure de pression (13) d'actionnement de flèche lorsque le moteur rotatif (7b) est dans l'état de rotation normal.
(JA) 旋回操作とブーム上げ操作とが同時に行われる場合、エネルギーを効率的に利用する技術を提供する。 油圧駆動装置(60)のコントローラ(10)は、ブーム(25)の上げ操作と旋回体(21)の旋回操作とが同時に行われることにより、第一の油圧ポンプ(2)から第一の制御弁(6a)を介してブームシリンダ(7a)へ作動油が供給され、かつ第二の油圧ポンプ(3)から第二の制御弁(6b)を介して旋回モータ(7b)へ作動油が供給される特定状態において、旋回モータ(7b)が定常旋回状態にまで至っていない場合には、ブーム操作圧カット弁(13)を開く指令電流を出力して、第二の油圧ポンプ(3)から旋回モータ(7b)へ供給する作動油の一部を第三の制御弁(6c)を介してブームシリンダ(7a)へ作動油を供給し、旋回モータ(7b)が定常旋回状態にある場合には、ブーム操作圧カット弁(13)を閉じる指令電流を出力する。
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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, 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)