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1. WO2014174776 - PISTON PROVIDED TO HYDRAULIC ROTATOR, AND HYDRAULIC ROTATOR

Publication Number WO/2014/174776
Publication Date 30.10.2014
International Application No. PCT/JP2014/001941
International Filing Date 03.04.2014
IPC
F04B 1/22 2006.01
FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
04POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
BPOSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
1Multi-cylinder machines or pumps characterised by number or arrangement of cylinders
12having cylinder axes coaxial with, or parallel or inclined to, main shaft axis
20having rotary cylinder block
22having two or more sets of cylinders or pistons
F03C 1/253 2006.01
FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
03MACHINES OR ENGINES FOR LIQUIDS; WIND, SPRING, OR WEIGHT MOTORS; PRODUCING MECHANICAL POWER OR A REACTIVE PROPULSIVE THRUST, NOT OTHERWISE PROVIDED FOR
CPOSITIVE-DISPLACEMENT ENGINES DRIVEN BY LIQUIDS
1Reciprocating-piston liquid engines
22with movable cylinders
24in which the liquid exclusively displaces one or more pistons reciprocating in rotary cylinders
253with cylinder axes generally coaxial with, or parallel to, main shaft axis
CPC
F01B 3/007
FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
01MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
BMACHINES OR ENGINES, IN GENERAL OR OF POSITIVE-DISPLACEMENT TYPE, e.g. STEAM ENGINES
3Reciprocating-piston machines or engines with cylinder axes coaxial with, or parallel or inclined to, main shaft axis
0032having rotary cylinder block
0044Component parts, details, e.g. valves, sealings, lubrication
007Swash plate
F01B 3/0085
FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
01MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
BMACHINES OR ENGINES, IN GENERAL OR OF POSITIVE-DISPLACEMENT TYPE, e.g. STEAM ENGINES
3Reciprocating-piston machines or engines with cylinder axes coaxial with, or parallel or inclined to, main shaft axis
0082Details
0085Pistons
F04B 1/0408
FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
04POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
BPOSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
1Multi-cylinder machines or pumps characterised by number or arrangement of cylinders
04having cylinders in star- or fan-arrangement
0404Details or component parts
0408Pistons
F04B 1/124
FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
04POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
BPOSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
1Multi-cylinder machines or pumps characterised by number or arrangement of cylinders
12having cylinder axes coaxial with, or parallel or inclined to, main shaft axis
122Details or component parts, e.g. valves, sealings or lubrication means
124Pistons
F04B 1/2078
FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
04POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
BPOSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
1Multi-cylinder machines or pumps characterised by number or arrangement of cylinders
12having cylinder axes coaxial with, or parallel or inclined to, main shaft axis
20having rotary cylinder block
2014Details or component parts
2078Swash plates
F04B 53/14
FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
04POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
BPOSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
53Component parts, details or accessories not provided for in, or of interest apart from, groups F04B1/00 - F04B23/00 or F04B39/00 - F04B47/00
14Pistons, piston-rods or piston-rod connections
Applicants
  • 川崎重工業株式会社 KAWASAKI JUKOGYO KABUSHIKI KAISHA [JP]/[JP]
Inventors
  • 玉島 英樹 TAMASHIMA, Hideki
  • 白土 透 SHIRATSUCHI, Toru
  • 乙田 健太 OTSUDA, Kenta
Agents
  • 特許業務法人 有古特許事務所 PATENT CORPORATE BODY ARCO PATENT OFFICE
Priority Data
2013-09430726.04.2013JP
Publication Language Japanese (JA)
Filing Language Japanese (JA)
Designated States
Title
(EN) PISTON PROVIDED TO HYDRAULIC ROTATOR, AND HYDRAULIC ROTATOR
(FR) PISTON SITUÉ DANS UN ROTATEUR HYDRAULIQUE, ET ROTATEUR HYDRAULIQUE
(JA) 液圧回転機が備えるピストン及び液圧回転機
Abstract
(EN)
In the present invention, a piston (61) is provided to a hydraulic rotator (72) that is used as a pump or a motor and in which in the circumferential direction thereof a plurality of the pistons (61) are disposed at a cylinder block (9) that rotates along with a rotation shaft (5), wherein the piston is provided with the following: a tubular peripheral wall section (62) having a hollow section (62b) and having formed in one end thereof an opening (64) that communicates with the hollow section (62b); a lid part (63) that hermetically seals the hollow section (62b) by being welded to the inner circumferential surface of the opening (64), and that is formed as a pressure receiving surface (63a), an outer surface of which receives fluid pressure; and a stress relief section (65) that is provided to an inner circumferential surface of the peripheral wall section (62) that is adjacent to or approaching an end part (68a) on the side of the hollow section (62b) of a welded section (68) formed between the opening (64) and the lid part (63), and that is for reducing the stress that acts on the end part (68a) of the welded section (68).
(FR)
La présente invention concerne un piston (61) situé dans un rotateur hydraulique (72) qui est utilisé comme pompe ou moteur et dans lequel dans sa direction circonférentielle une pluralité de pistons (61) sont disposés au niveau d'un bloc moteur (9) qui tourne avec un arbre de rotation (5), le piston comprenant : une section de paroi périphérique tubulaire (62) ayant une section creuse (62b) et dans l'une des extrémités de laquelle est formée une ouverture (64) qui communique avec la section creuse (62b) ; une partie couvercle (63) qui ferme hermétiquement la section creuse (62b) en étant soudée à la surface circonférentielle interne de l'ouverture (64), et qui est formée comme une surface réceptrice de pression (63a), une surface externe de celle-ci recevant une pression de fluide ; et une section réductrice de tension (65) qui est située sur une surface circonférentielle interne de la section de paroi périphérique (62) qui est adjacente à ou proche d'une partie d'extrémité (68a) sur le côté de la section creuse (62b) d'une section soudée (68) formée entre l'ouverture (64) et la partie couvercle (63), et qui permet de réduire la tension exercée sur la partie d'extrémité (68a) de la section soudée (68).
(JA)
 回転軸5と共に回転するシリンダブロック9に複数のピストン61がその周方向に配置され、ポンプ又はモータとして使用される液圧回転機72が備えるピストン61において、中空部62bを有し、当該中空部62bと連通する開口部64が一端に形成された円筒状の周壁本体部62と、開口部64の内周面に溶接されて中空部62bを密封し、外面が液圧を受ける受圧面63aとして形成された蓋部63と、開口部64と蓋部63との間に形成された溶接部68の中空部62b側の端部68aに隣接又は接近する周壁本体部62の内周面に設けられ、溶接部68の端部68aに働く応力を低減するための応力低減部65とを備える。
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