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1. WO2005066490 - INCLINED ROTATION CONTROL DEVICE OF VARIABLE DISPLACEMENT HYDRAULIC PUMP

Publication Number WO/2005/066490
Publication Date 21.07.2005
International Application No. PCT/JP2004/017642
International Filing Date 19.11.2004
IPC
F04B 1/32 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
26Control
30of machines or pumps with rotary cylinder blocks
32by varying the relative positions of a swash plate and a cylinder block
CPC
F04B 1/324
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
26Control
30of machines or pumps with rotary cylinder blocks
32by varying the relative positions of a swash plate and a cylinder block
324by changing the inclination of the swash plate
F04B 49/002
FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
04POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
BPOSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
49Control ; , e.g. of pump delivery, or pump pressure; of, or safety measures for, machines, pumps, or pumping installations, not otherwise provided for, or of interest apart from, groups F04B1/00 - F04B47/00
002Hydraulic systems to change the pump delivery
Applicants
  • 日立建機株式会社 HITACHI CONSTRUCTION MACHINERY CO., LTD. [JP]/[JP] (AllExceptUS)
  • 新留 隆志 NIIDOME, Takashi [JP]/[JP] (UsOnly)
  • 藪内 愛智 YABUUCHI, Yoshitomo [JP]/[JP] (UsOnly)
  • 小林 剛 KOBAYASHI, Takeshi [JP]/[JP] (UsOnly)
Inventors
  • 新留 隆志 NIIDOME, Takashi
  • 藪内 愛智 YABUUCHI, Yoshitomo
  • 小林 剛 KOBAYASHI, Takeshi
Agents
  • 広瀬 和彦 HIROSE, Kazuhiko
Priority Data
2004/52905.01.2004JP
Publication Language Japanese (JA)
Filing Language Japanese (JA)
Designated States
Title
(EN) INCLINED ROTATION CONTROL DEVICE OF VARIABLE DISPLACEMENT HYDRAULIC PUMP
(FR) DISPOSITIF DE COMMANDE DE ROTATION INCLINE DESTINE A UNE POMPE HYDRAULIQUE A DEPLACEMENT VARIABLE
(JA) 可変容量型油圧ポンプの傾転制御装置
Abstract
(EN)
An inclined rotation control device of a variable displacement hydraulic pump, wherein a feedback mechanism (30) formed of a converting part (31) and a translating bar (33) is installed between the side face of a swash plate (21) and the control sleeve (26) of a regulator (24). The converting part (31) of the feedback mechanism (30) is located at an initial position (F-F) when the swash plate (21) is set at a neutral position and positioned on the axial one side of the swash plate along an axis (O-O) passing an inclined rotation center (C). When the swash plate (21) is inclined and drivingly rotated in a normal direction or a reverse direction, the converting part (31) is displaced from the initial position (F-F) to the axial other side along the axis (O-O) to convert the inclined rotating operation of the swash plate (21) to an axial displacement and take out the axial displacement. The translating bar (33) transmits the axial displacement taken out by the converting part (31) to the control sleeve (26) of the regulator (24).
(FR)
L'invention concerne un dispositif de commande de rotation incliné destiné à une pompe hydraulique à déplacement variable. Un mécanisme de rétroaction (30) constitué d'un élément de conversion (31) et d'une barre de translation (33) est installé entre la face latérale d'un plateau oscillant (21) et le manchon de commande (26) d'un régulateur (24). L'élément de conversion (31) d'un mécanisme de rétroaction (30) est situé à une position initiale (F-F) lorsque le plateau oscillant (21) est réglé à une position neutre, et placé sur la face axiale du plateau oscillant le long de l'axe (O-O) passant par un centre de rotation incliné ( C) lorsque le plateau oscillant (21) est incliné et tourne par entraînement dans une direction normale ou une direction inverse. L'élément de conversion (31) est déplacé de la position initiale (F-F) à l'autre face axiale le long de l'axe (O-O) pour convertir le fonctionnement de rotation incliné du plateau oscillant ( 21) en déplacement axial et prélever le déplacement axial. La barre de translation (33) transmet le déplacement axial prélevé par l'élément de conversion (31) au manchon de commande (26) du régulateur (24).
(JA)
斜板(21)の側面とレギュレータ(24)の制御スリーブ(26)との間には、変換部(31)と並進バー(33)とからなるフィードバック機構(30)を設ける。フィードバック機構(30)の変換部(31)は、斜板(21)が中立位置にあるときに初期位置(F-F)となって傾転中心(C)を通る軸線(O-O)に沿った軸方向一側に位置し、斜板(21)が正方向または逆方向に傾転駆動されるときには、前記初期位置(F-F)から軸線(O-O)に沿って軸方向他側に変位することにより、斜板(21)の傾転動作を軸方向変位に変換して取出す。そして、前記並進バー(33)は、変換部(31)で取出した軸方向変位をレギュレータ(24)の制御スリーブ(26)に伝える。
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