EP0461258A4 - Control unit for upper swivel body of hydraulic excavator - Google Patents

Control unit for upper swivel body of hydraulic excavator

Info

Publication number
EP0461258A4
EP0461258A4 EP19900903220 EP90903220A EP0461258A4 EP 0461258 A4 EP0461258 A4 EP 0461258A4 EP 19900903220 EP19900903220 EP 19900903220 EP 90903220 A EP90903220 A EP 90903220A EP 0461258 A4 EP0461258 A4 EP 0461258A4
Authority
EP
European Patent Office
Prior art keywords
pressure
swivel body
upper swivel
controller
driving motor
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Withdrawn
Application number
EP19900903220
Other languages
English (en)
Other versions
EP0461258A1 (fr
Inventor
Yukio Komatsu Osaka Plant 3-1-1 Ueno Moriya
Takumi Komatsu Osaka Plant 3-1-1 Ueno Onoda
Fugitoshi Komatsu Osaka Plant Takamura
Toshio Komatsu Osaka Plant 3-1-1 Ueno Yokoyama
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Komatsu Ltd
Original Assignee
Komatsu Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Komatsu Ltd filed Critical Komatsu Ltd
Publication of EP0461258A1 publication Critical patent/EP0461258A1/fr
Publication of EP0461258A4 publication Critical patent/EP0461258A4/en
Withdrawn legal-status Critical Current

Links

Classifications

    • E—FIXED CONSTRUCTIONS
    • E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
    • E02F—DREDGING; SOIL-SHIFTING
    • E02F9/00—Component parts of dredgers or soil-shifting machines, not restricted to one of the kinds covered by groups E02F3/00 - E02F7/00
    • E02F9/08—Superstructures; Supports for superstructures
    • E02F9/10—Supports for movable superstructures mounted on travelling or walking gears or on other superstructures
    • E02F9/12—Slewing or traversing gears
    • E02F9/121—Turntables, i.e. structure rotatable about 360°
    • E02F9/123—Drives or control devices specially adapted therefor
    • E—FIXED CONSTRUCTIONS
    • E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
    • E02F—DREDGING; SOIL-SHIFTING
    • E02F9/00—Component parts of dredgers or soil-shifting machines, not restricted to one of the kinds covered by groups E02F3/00 - E02F7/00
    • E02F9/08—Superstructures; Supports for superstructures
    • E02F9/10—Supports for movable superstructures mounted on travelling or walking gears or on other superstructures
    • E02F9/12—Slewing or traversing gears
    • E02F9/121—Turntables, i.e. structure rotatable about 360°
    • E02F9/128—Braking systems

Landscapes

  • Engineering & Computer Science (AREA)
  • Mining & Mineral Resources (AREA)
  • Civil Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Structural Engineering (AREA)
  • Operation Control Of Excavators (AREA)
  • Fluid-Pressure Circuits (AREA)

Abstract

Unité de commande pour le corps supérieur pivotant d'une pelle hydraulique utilisée pour empêcher une augmentation soudaine de la pression dans une ligne hydraulique et pour obtenir une commande de pivotemment sans à-coups lorsque le corps supérieur pivotant pourvu d'une cabine de conducteur et d'une machine de travail et présentant une inertie importante est accéléré ou décéléré. A cet effet, des soupapes de régulation de pression (10), (11) commandées en même temps que des soupapes proportionnelles à solénoïde (8), (8a) par un organe de commande (7) sont reliées à une ligne de décharge et à une ligne de retour d'une pompe hydraulique (1) de manière à commander une pression d'entrée et une pression de sortie d'un moteur (3) d'entraînement du corps supérieur pivotant, lors de la rotation du moteur. En particulier, l'une des soupapes de régulation de pression (10) commande et accroît la pression d'entraînement du moteur d'entraînement (3) en fonction d'un signal d'augmentation de vitesse émis par l'organe de commande (7), et l'autre soupape de régulation de pression (11) commande et réduit la pression de freinage du moteur d'entraînement (3) en fonction d'un signal de diminution de vitesse émis par l'organe de commande (7).
EP19900903220 1989-02-28 1990-02-16 Control unit for upper swivel body of hydraulic excavator Withdrawn EP0461258A4 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
JP4698489A JPH02225730A (ja) 1989-02-28 1989-02-28 油圧掘削機械における上部旋回体の制御装置
JP46984/89 1989-02-28

Publications (2)

Publication Number Publication Date
EP0461258A1 EP0461258A1 (fr) 1991-12-18
EP0461258A4 true EP0461258A4 (en) 1993-03-31

Family

ID=12762482

Family Applications (1)

Application Number Title Priority Date Filing Date
EP19900903220 Withdrawn EP0461258A4 (en) 1989-02-28 1990-02-16 Control unit for upper swivel body of hydraulic excavator

Country Status (3)

Country Link
EP (1) EP0461258A4 (fr)
JP (1) JPH02225730A (fr)
WO (1) WO1990010117A1 (fr)

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR960023541A (ko) * 1994-12-08 1996-07-20 안자키 사토루 유압 액츄에이터의 반전방지장치
US6052636A (en) * 1997-08-04 2000-04-18 Caterpillar Inc. Apparatus and method for positioning an excavator housing
EP0942103B1 (fr) * 1998-03-11 2003-10-01 Poclain Hydraulics Industrie Dispositif de valve pour un moteur hydraulique apte à entraíner une masse d'inertie importante

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS59126829A (ja) * 1983-01-10 1984-07-21 Hitachi Constr Mach Co Ltd 油圧シヨベルの油圧制御装置
JPH0663265B2 (ja) * 1985-11-29 1994-08-22 株式会社小松製作所 建設機械の油圧回路
JPH0431326Y2 (fr) * 1986-04-30 1992-07-28

Non-Patent Citations (2)

* Cited by examiner, † Cited by third party
Title
No further relevant documents disclosed *
See also references of WO9010117A1 *

Also Published As

Publication number Publication date
WO1990010117A1 (fr) 1990-09-07
JPH02225730A (ja) 1990-09-07
EP0461258A1 (fr) 1991-12-18

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Legal Events

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