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Pub. No.: WO/2018/163504 International Application No.: PCT/JP2017/039839
Publication Date: 13.09.2018 International Filing Date: 03.11.2017
IPC:
F04B 1/24 (2006.01) ,F03C 1/24 (2006.01) ,F03C 1/253 (2006.01) ,F04B 1/22 (2006.01)
F MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
04
POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
B
POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
1
Multi-cylinder machines or pumps characterised by number or arrangement of cylinders
12
having cylinder axes coaxial with, or parallel or inclined to, main shaft axis
20
having rotary cylinder block
22
having two or more sets of cylinders or pistons
24
inclined to main shaft axis
F MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
03
MACHINES OR ENGINES FOR LIQUIDS; WIND, SPRING, OR WEIGHT MOTORS; PRODUCING MECHANICAL POWER OR A REACTIVE PROPULSIVE THRUST, NOT OTHERWISE PROVIDED FOR
C
POSITIVE-DISPLACEMENT ENGINES DRIVEN BY LIQUIDS
1
Reciprocating-piston liquid engines
22
with movable cylinders
24
in which the liquid exclusively displaces one or more pistons reciprocating in rotary cylinders
F MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
03
MACHINES OR ENGINES FOR LIQUIDS; WIND, SPRING, OR WEIGHT MOTORS; PRODUCING MECHANICAL POWER OR A REACTIVE PROPULSIVE THRUST, NOT OTHERWISE PROVIDED FOR
C
POSITIVE-DISPLACEMENT ENGINES DRIVEN BY LIQUIDS
1
Reciprocating-piston liquid engines
22
with movable cylinders
24
in which the liquid exclusively displaces one or more pistons reciprocating in rotary cylinders
253
with cylinder axes generally coaxial with, or parallel to, main shaft axis
F MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
04
POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
B
POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
1
Multi-cylinder machines or pumps characterised by number or arrangement of cylinders
12
having cylinder axes coaxial with, or parallel or inclined to, main shaft axis
20
having rotary cylinder block
22
having two or more sets of cylinders or pistons
Applicants: HITACHI CONSTRUCTION MACHINERY CO., LTD.[JP/JP]; 16-1, Higashiueno 2-chome, Taito-ku, Tokyo 1100015, JP
Inventors: YAMADA Tsuyoshi; JP
YABUUCHI Yoshitomo; JP
OKUNO Naoyuki; JP
Agent: HIROWA PATENT FIRM; 4F., Nishishinjuku Koide Bldg., 1-3, Nishishinjuku 3-chome, Shinjuku-ku, Tokyo 1600023, JP
Priority Data:
2017-04592010.03.2017JP
Title (EN) AXIAL PISTON-TYPE HYDRAULIC ROTARY MACHINE
(FR) MACHINE ROTATIVE HYDRAULIQUE DE TYPE À PISTONS AXIAUX
(JA) アキシャルピストン式液圧回転機
Abstract:
(EN) According to the present invention, a nitrided layer (13) is formed on the base material surface side of a cylinder block (7) including an opening-side end surface (7B) and each of cylinder holes (12). In addition, a piston sliding surface (12A) of each of the cylinder holes (12) is formed as a compound layer-removed hole (17) by using a polishing means, such as honing for example, to remove a compound layer (16) located on the surface side of the nitrided layer (13). In addition, in a portion (A) at which the compound layer-removed hole (17) of each cylinder hole (12) and a tapered surface (12B) in the cylinder entrance intersect, a compound layer-removed surface (18) is formed by using a polishing means such as, for example, honing. This compound layer-removed surface (18) is formed as an inclined surface with a tapered shape having an angle α.
(FR) La présente invention concerne la formation d'une couche nitrurée (13) sur le côté surface de matériau de base d'un bloc-cylindres (7) comprenant une surface d'extrémité côté ouverture (7B) et chacun des trous de cylindre (12). De plus, une surface de coulissement de piston (12A) de chacun des trous de cylindre (12) est formée sous la forme d'un trou (17) retiré de la couche de composé en utilisant un moyen de polissage, tel que le rodage par exemple, pour retirer une couche de composé (16) située sur le côté surface de la couche nitrurée (13). De plus, dans une partie (A) au niveau de laquelle le trou (17) retiré de la couche de composé de chaque trou de cylindre (12) et une surface effilée (12B) dans l'entrée de cylindre se croisent, une surface (18) retirée de la couche de composé est formée à l'aide d'un moyen de polissage tel que, par exemple, le rodage. Cette surface (18) retirée de la couche de composé se présente sous la forme d'une surface inclinée ayant une forme effilée ayant un angle α.
(JA) 開口側端面(7B)および各シリンダ穴(12)を含んでシリンダブロック(7)の母材表面側には窒化処理層(13)を形成する。この上で、各シリンダ穴(12)のピストン摺動面(12A)は、窒化処理層(13)のうち表面側に位置する化合物層(16)を、例えばホーニング加工等の研摩手段を用いて除去することにより化合物層除去加工穴(17)として形成する。さらに、各シリンダ穴(12)の化合物層除去加工穴(17)とシリンダ入口テーパ面(12B)とが交わる部位(A)には、例えばホーニング加工等の研摩手段を用いて化合物層除去加工面(18)を形成する。この化合物層除去加工面(18)は角度αのテーパ状傾斜面として形成されている。
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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)