EP0480036A1 - Dispositif d'affichage du schema de fonctionnement d'un excavateur hydraulique - Google Patents

Dispositif d'affichage du schema de fonctionnement d'un excavateur hydraulique Download PDF

Info

Publication number
EP0480036A1
EP0480036A1 EP90909837A EP90909837A EP0480036A1 EP 0480036 A1 EP0480036 A1 EP 0480036A1 EP 90909837 A EP90909837 A EP 90909837A EP 90909837 A EP90909837 A EP 90909837A EP 0480036 A1 EP0480036 A1 EP 0480036A1
Authority
EP
European Patent Office
Prior art keywords
actuation pattern
actuation
pattern
hydraulic excavator
displaying
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Withdrawn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
EP90909837A
Other languages
German (de)
English (en)
Other versions
EP0480036A4 (en
Inventor
Toshio Kabushiki Kaisha Komatsu Seisakus Yokoyama
Yukio Kabushiki Kaisha Komatsu Seisakusho Moriya
Takumi Kabushiki Kaisha Komatsu Seisakusho Onoda
Shigeru Kabushiki Kaisha Komatsu Kinoshita
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 EP0480036A1 publication Critical patent/EP0480036A1/fr
Publication of EP0480036A4 publication Critical patent/EP0480036A4/en
Withdrawn legal-status Critical Current

Links

Images

Classifications

    • E—FIXED CONSTRUCTIONS
    • E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
    • E02F—DREDGING; SOIL-SHIFTING
    • E02F3/00—Dredgers; Soil-shifting machines
    • E02F3/04—Dredgers; Soil-shifting machines mechanically-driven
    • E02F3/28—Dredgers; Soil-shifting machines mechanically-driven with digging tools mounted on a dipper- or bucket-arm, i.e. there is either one arm or a pair of arms, e.g. dippers, buckets
    • E02F3/36—Component parts
    • E02F3/42—Drives for dippers, buckets, dipper-arms or bucket-arms
    • E02F3/43—Control of dipper or bucket position; Control of sequence of drive operations
    • 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
    • E02F9/20—Drives; Control devices
    • E02F9/2004—Control mechanisms, e.g. control levers
    • 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
    • E02F9/26—Indicating devices

Definitions

  • the present invention relates generally to an apparatus for actuating a working unit of a hydraulic excavator. More particularly, the present invention relates to an apparatus for displaying an actuation pattern for actuating a working unit of the hydraulic excavator by handling actuation levers.
  • Fig. 5 is a schematic side view of a conventional hydraulic excavator.
  • the hydraulic excavator includes a boom d , an arm e and a bucket f in front of an upper turnable section b mounted on a lower movable section a to constitute a working unit c .
  • the boom d , the arm e and the bucket f are operatively connected to each other via joints such that they are turnably displaced not only in the forward/rearward direction but also in the upward/downward direction.
  • the hydraulic excavator performs various kinds of operations such as an excavating operation for excavating soil and gravel, a loading operation for loading excavated soil and gravel or the like by actuating the boom d , the arm e and the bucket f with the aid of hydraulic actuators d1, e 1 and f 1 while turning the upper turnable section b with the aid of a hydraulic actuator b 1.
  • the aforementioned operations are performed by handling two levers h 1 and h 2 standing upright at the positions located leftward and rightward of an operator's seat arranged in an operator's cabin g .
  • the direction of actuation of the respective actuators is determined depending on the direction of tilting of the actuation levers h 1 and h 2.
  • the following eight operations are performed by tilting the two actuating levers h 1 and h 2 with operator's hands, one of them being turnable displacement of the boom d in the upward direction, other one being turnable displacement of the same in the downward direction, another ones being excavating and dumping operations to be performed by actuating the arm e , another ones being excavating and dumping operations to be performed by actuating the bucket f and another ones being turning movement of the upper movable section b to be achieved in the leftward/rightward direction by actuating the actuator b 1.
  • an actuation pattern of the working unit as mentioned above differs from manufacturer to manufacturer of an hydraulic excavator, and a controller for the hydraulic excavator is constructed such that the actuation pattern employable for the working unit can freely be shifted to another one in conformity with an operator's request.
  • means for shifting the actuation pattern of the working unit to another one is constructed in the form of a selector valve unit proposed by a common applicant to the present invention under Japanese Utility Model Application NO. 57-172258 such that one of a plurality of preset actuation patterns can be selected in conformity with a desired actuation pattern at an operator's discretion or the foregoing means is constructed in the form of an electric type actuation pattern shifting unit or the like proposed by the same applicant as mentioned above under Japanese Utility Model Application NO. 63-166511 such that the present actuation pattern can selectively be proposed to a desired one at an operator's discretion.
  • the present invention has been made with the foregoing background in mind and its object resides in providing an apparatus for displaying an actuation pattern for a hydraulic excavator wherein the apparatus assures that a shifted actuation pattern is automatically displayed without fail at every time when the present actuation pattern is shifted to another one.
  • an apparatus for displaying an actuation pattern for a hydraulic excavator wherein the apparatus is characterized in that a plurality of actuation pattern displaying boards each having a predetermined actuation pattern previously diagrammized thereon are arranged for a working unit of the hydraulic excavator and that specific actuation pattern display boards selected from the plurality of actuation pattern displaying boards when the actuation pattern is shifted to another one are discriminatively illuminated in response to a pattern shifting signal outputted from an actuation pattern shifting unit adapted to shift the actuation pattern to another one.
  • a plurality of liquid crystal displaying boards are preferably employed to serve as actuation pattern displaying means for the actuation pattern displaying boards.
  • a plurality of lamps may be employed for the same purpose.
  • specific actuation pattern displaying boards selected from the plurality of actuation pattern displaying boards at that time are discriminatively illuminated in response to a signal outputted from the actuation pattern shifting unit via electric circuits.
  • Fig. 1 is an electric-hydraulic circuit diagram which schematically illustrates the structure of an apparatus for displaying an actuation pattern for a hydraulic excavator in accordance with an embodiment of the present invention.
  • Fig. 2 is a circuit diagram which illustrates circuits for shifting the actuation pattern of the apparatus of the present invention to another one.
  • Fig. 3 is an electrical circuit diagram which illustrates by way of example an output signal to be outputted to the apparatus of the present invention when the actuation pattern is shifted to another one.
  • Fig. 4 is an electric circuit diagram for an apparatus for displaying an actuation pattern for a hydraulic excavator in accordance with another embodiment of the present invention.
  • Fig. 5 is a schematic side view of a hydraulic excavator.
  • Fig. 6 is an illustrative view which schematically shows by way of example an actuation pattern for actuating an actuating unit of the hydraulic excavator by handling actuating levers.
  • Fig. 1 is an electric-hydraulic circuit diagram which schematically illustrates the structure of an apparatus of displaying an actuation pattern for a hydraulic excavator in accordance with an embodiment of the present invention wherein the apparatus is equipped with an electric type actuation pattern shifting unit.
  • reference numerals 1a and 1b designate actuating levers each of which is constructed in the form of an electric lever.
  • actuating levers 1a and 1b When the actuating levers 1a and 1b are tilted from the shown neutral positions only only in the forward/rearward direction bust also in the leftward/rightward direction, their displacement is converted into electric signals. Then, the displacement of the actuating levers 1a and 1b which has been converted into electric signals is first inputted into an actuating pattern shifting unit 3 in which the electric signals are converted into a desired actuation pattern, and thereafter, the converted actuation pattern is inputted into a controller 2 for a working unit of the hydraulic excavator. Respective actuators for driving the working unit are controlled in response to command signals outputted from the controller 2 based on the actuation of the actuating levers 1a and 1b.
  • Actuating valves each constructed in the form of a solenoid valve for controlling the hydraulic actuators for the working unit are disposed in main hydraulic pipings 6a and 6b by way of which pressurized hydraulic oil pumped from two variable hydraulic pumps 5a and 5b driven by an engine 4 is delivered to the respective hydraulic actuators.
  • reference numeral 7a designates an actuating valve for a boom cylinder 8
  • reference numeral 7b designates an actuating valve for an arm cylinder 8b
  • reference numeral 7c designates an actuating valve for a bucket cylinder 8c
  • reference numeral 7d designates an actuating valve for a motor 8d for generating turning movement.
  • the respective actuating valves 7a to 7d each constructed in the form of a solenoid type pilot valve are controlled to shift from ON to OFF and vice versa in response to command signals outputted from the controller 2.
  • the actuation pattern shifting unit 3 is provided with eight levers 11 of which bottom ends are secured to a pattern actuation shaft 10 that is a shaft fixed to a shift knob 9.
  • signal circuits extending to the controller 2 are simultaneously shifted to another ones.
  • the actuation pattern shown in Fig. 2 when, e.g., the right-hand actuating lever 1a is tilted in the forward direction, an electric signal corresponding to the displacement of the actuating lever 1a is transmitted to a terminal A0 of the actuation pattern shifting unit 3 so that it is inputted into a terminal A of the controller 2 via the terminals A1 and A of the actuation pattern shifting unit 3.
  • a command signal corresponding to a quantity of the displacement of the actuating lever 1a is outputted from a terminal A0 of the controller 2 to one of solenoids in the actuating valve 7d for the motor 8d, whereby the hydraulic excavator turns in the rightward direction.
  • an electric signal corresponding to the displacement of the actuation lever 1a is transmitted to a terminal B0 of the actuation pattern shifting unit 3 so that it is inputted into a terminal B of the controller 2 via the terminals B1 and B of the actuation pattern shifting unit 3.
  • a command signal corresponding to a quantity of the displacement of the actuating lever 1a is outputted from a terminal B0 of the controller 2 to other one of the solenoids in the actuating valve 7d for the motor 8d, whereby the hydraulic excavator turns in the leftward direction.
  • the shift knob 9 of the actuation pattern shifting unit 3 is rotated with an operator's hand to turn the lever 11 so as to allow the terminals A, B --- H to be electrically connected to terminals A2, B2 --- H2, the present actuation pattern is shifted to a second actuation pattern.
  • the second actuation pattern is shifted to a third actuation pattern and the third actuation pattern is then shifted to a fourth actuation pattern by turning the shift knob 9 so as to allow electric connection positions to be shifted to another ones in the same manner as mentioned above.
  • the respective actuators are controlled via the controller 2 in accordance with each of the shifted actuation patterns.
  • the apparatus 12 includes four actuation pattern display boards 13a, 13b, 13c and 13d which are composed of liquid crystal display units having four kinds of actuation patterns, i.e., first to fourth actuation patterns previously diagrammized thereon.
  • the pattern shifting shaft 10 of the actuation pattern shifting unit 3 to be turned by the shift knob 9 shown in Fig. 2 is equipped with four switches 14a to 14d corresponding to the actuation pattern display boards 13a to 13d, and the switches 14a to 14d are electrically connected to a central processing unit 16 via electric circuits 15a to 15d.
  • the selected actuation patterns are automatically displayed on the corresponding display boards in operative association with the shifting of the actuation patterns as mentioned above.
  • Fig. 4 is an electric circuit diagram which schematically illustrates the structure of an apparatus for displaying an actuation pattern for a hydraulic excavator in accordance with another embodiment of the present invention.
  • the apparatus includes actuation pattern display boards 18a, 18b, 18c and 18d having first to four actuation patterns diagrammized thereon, and lamps 19a, 19b, 19c and 19d are arranged in front of the respective actuation pattern display boards 18a, 18b, 18c and 18d.
  • the lamps 19a, 19b, 19c and 19d are electrically connected to switches on the pattern shifting shaft 10 via electric circuits 20a to 20d to which the shift knob 9 of the actuation pattern shifting unit 3 shown in Fig.
  • the apparatus of the present invention since the actuation pattern selected by the apparatus in operative association with the actuation pattern shifting unit is reliably displayed, there does not arise a malfunction that the selected actuation pattern does not coincide with an actually displayed one. This leads to the result that the hydraulic excavator can adequately be driven by an operator. Especially, in a case where the operator is shifted to another operator or in a case where the present actuation pattern is unpreparedly shifted to another one, the actuation pattern which has been shifted in that way can quickly and exactly be recognized by the operator.
  • an advantageous effect of the present invention is that the actuation pattern display boards can clearly discriminatively be recognized by the operator not only in the nighttime but also in the daytime.
  • the apparatus for displaying an actuation pattern for a hydraulic excavator according to the present invention can suitably be employed for a hydraulic excavator which requires that an actuation pattern for a working unit of the hydraulic excavator can quickly and exactly be recognized by an operator at any time when the present actuation pattern is shifted to another one.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mining & Mineral Resources (AREA)
  • Civil Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Structural Engineering (AREA)
  • Mechanical Engineering (AREA)
  • Component Parts Of Construction Machinery (AREA)
  • Operation Control Of Excavators (AREA)

Abstract

Le dispositif décrit (12), qui sert à afficher le schéma de fonctionnement d'un excavateur hydraulique, fait apparaître, après réception de signaux de changement de schéma émis par un dispositif de changement de schéma (3), un tableau d'affichage de schéma de fonctionnement spécifique, qui est identifié et sélectionné par changement des schémas de fonctionnement émis par plusieurs tableaux d'affichage de schéma de fonctionnement (13a, 13b, 13c et 13d) contenant des schémas de fonctionnement graphique prédéterminés des mécanismes de travail des excavateurs.
EP19900909837 1989-06-30 1990-06-29 Device for displaying operation pattern of hydraulic excavator Withdrawn EP0480036A4 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
JP1170414A JPH0336334A (ja) 1989-06-30 1989-06-30 油圧式掘削機の操作パターン変換モニタ装置
JP170414/89 1989-06-30

Publications (2)

Publication Number Publication Date
EP0480036A1 true EP0480036A1 (fr) 1992-04-15
EP0480036A4 EP0480036A4 (en) 1993-03-31

Family

ID=15904484

Family Applications (1)

Application Number Title Priority Date Filing Date
EP19900909837 Withdrawn EP0480036A4 (en) 1989-06-30 1990-06-29 Device for displaying operation pattern of hydraulic excavator

Country Status (4)

Country Link
EP (1) EP0480036A4 (fr)
JP (1) JPH0336334A (fr)
KR (1) KR920702743A (fr)
WO (1) WO1991000397A1 (fr)

Cited By (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0741209A2 (fr) * 1995-05-05 1996-11-06 Clark Equipment Company Système de contrÔle hydraulique pour vehicules de chantier permettant le mouvement proportionel des éléments de travail
EP1367182A1 (fr) * 2002-05-30 2003-12-03 Groupe Mecalac Dispositif électro-hydraulique et engin de travaux publics ainsi équipé
EP1580334A1 (fr) * 2004-03-22 2005-09-28 Volvo Construction Equipment Holding Sweden AB Procédé pour contrôler à l'aide de joysticks électroniques le déplacement d'un engin de travaux publics
EP2980317A1 (fr) * 2014-07-30 2016-02-03 Caterpillar Inc. Multiples modèles de commande pour machines hydraulique à commandes à la main et au pied
US10975547B2 (en) 2018-12-07 2021-04-13 Deere & Company Two-dimensional attachment grade control for work vehicle
US10988913B2 (en) 2019-02-21 2021-04-27 Deere & Company Blade for work vehicle
US11286641B2 (en) 2018-12-07 2022-03-29 Deere & Company Attachment-configurable system for a work machine
US11747803B2 (en) 2021-01-25 2023-09-05 Caterpillar Inc. Remote control station and method of operating remote control station

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2251232B (en) * 1990-09-29 1995-01-04 Samsung Heavy Ind Automatic actuating system for actuators of excavator
JP2000034745A (ja) * 1998-05-11 2000-02-02 Shin Caterpillar Mitsubishi Ltd 建設機械
ES2625803T3 (es) 2010-10-05 2017-07-20 Touchsensor Technologies, Llc Cubierta superficial de apoyo con celdas selectivamente inflables

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1990007613A1 (fr) * 1988-12-23 1990-07-12 Kabushiki Kaisha Komatsu Seisakusho Dispositif de commutation du schema de commande d'excavateurs hydrauliques

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS6131532A (ja) * 1984-07-24 1986-02-14 Kubota Ltd シヨベル作業車
JPS628109A (ja) * 1985-07-05 1987-01-16 Hoya Corp スラブ状集束性光伝送体
JPH0538142Y2 (fr) * 1986-01-31 1993-09-27
JPS63116565U (fr) * 1987-01-21 1988-07-27

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1990007613A1 (fr) * 1988-12-23 1990-07-12 Kabushiki Kaisha Komatsu Seisakusho Dispositif de commutation du schema de commande d'excavateurs hydrauliques

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
See also references of WO9100397A1 *

Cited By (12)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0741209A2 (fr) * 1995-05-05 1996-11-06 Clark Equipment Company Système de contrÔle hydraulique pour vehicules de chantier permettant le mouvement proportionel des éléments de travail
EP0741209A3 (fr) * 1995-05-05 1997-05-14 Clark Equipment Co Système de contrÔle hydraulique pour vehicules de chantier permettant le mouvement proportionel des éléments de travail
EP1367182A1 (fr) * 2002-05-30 2003-12-03 Groupe Mecalac Dispositif électro-hydraulique et engin de travaux publics ainsi équipé
FR2840368A1 (fr) * 2002-05-30 2003-12-05 Groupe Mecalac Dispositif electro-hydraulique et engin de travaux publics ainsi equipe
EP1580334A1 (fr) * 2004-03-22 2005-09-28 Volvo Construction Equipment Holding Sweden AB Procédé pour contrôler à l'aide de joysticks électroniques le déplacement d'un engin de travaux publics
US7379806B2 (en) 2004-03-22 2008-05-27 Volvo Construction Equipment Holding Sweden Ab Method of controlling travel of construction heavy equipment with electronic joysticks
CN100400896C (zh) * 2004-03-22 2008-07-09 沃尔沃建造设备控股（瑞典）有限公司 带有电子操纵杆的施工重型设备的移动控制方法
EP2980317A1 (fr) * 2014-07-30 2016-02-03 Caterpillar Inc. Multiples modèles de commande pour machines hydraulique à commandes à la main et au pied
US10975547B2 (en) 2018-12-07 2021-04-13 Deere & Company Two-dimensional attachment grade control for work vehicle
US11286641B2 (en) 2018-12-07 2022-03-29 Deere & Company Attachment-configurable system for a work machine
US10988913B2 (en) 2019-02-21 2021-04-27 Deere & Company Blade for work vehicle
US11747803B2 (en) 2021-01-25 2023-09-05 Caterpillar Inc. Remote control station and method of operating remote control station

Also Published As

Publication number Publication date
KR920702743A (ko) 1992-10-06
WO1991000397A1 (fr) 1991-01-10
EP0480036A4 (en) 1993-03-31
JPH0336334A (ja) 1991-02-18

Similar Documents

Publication Publication Date Title
EP0404953B1 (fr) Unite de commande d'engin de construction
EP0480036A1 (fr) Dispositif d'affichage du schema de fonctionnement d'un excavateur hydraulique
EP2987672B1 (fr) Système de contrôle
US8621855B2 (en) Electro-hydraulic auxiliary mode control
US7010367B2 (en) Operator interface for a work machine
KR0143064B1 (ko) 유압 굴삭기의 직선 굴삭 제어장치
US8730055B2 (en) Display device of work vehicle
US4015729A (en) Automatic control system for backhoe
US20090244106A1 (en) Display Device of Work Vehicle
US6293033B1 (en) Construction machinery
US8862274B2 (en) Electro-hydraulic auxiliary control with operator-selectable flow setpoint
US6330502B1 (en) Method and system for selecting desired response of an electronic-controlled sub-system
DE19651594A1 (de) Vorrichtung und Verfahren zum automatischen Rütteln von Arbeitsteilen von Motorbaufahrzeugen
US20060064221A1 (en) Operator selectable control pattern
JPH02236318A (ja) 建設機械のブーム用フロート回路
KR100328218B1 (ko) 유압식건설기계의조작방식선택장치및방법
KR20020010515A (ko) 유압식 굴삭차량
JPH0361811B2 (fr)
WO2012053534A1 (fr) Véhicule de travail
JP3779660B2 (ja) 操作パターン切換手段を備えた作業機
US11747803B2 (en) Remote control station and method of operating remote control station
JPH0710054U (ja) マルチ操作パターン切換装置
JPH09156875A (ja) 建設機械の油圧制御装置
JPH09317707A (ja) 圧油供給装置
JPH1037232A (ja) ２ピースブーム型作業機の操作駆動装置

Legal Events

Date Code Title Description
PUAI Public reference made under article 153(3) epc to a published international application that has entered the european phase

Free format text: ORIGINAL CODE: 0009012

AK Designated contracting states

Kind code of ref document: A1

Designated state(s): DE FR GB

17P Request for examination filed

Effective date: 19920110

A4 Supplementary search report drawn up and despatched

Effective date: 19930208

AK Designated contracting states

Kind code of ref document: A4

Designated state(s): DE FR GB

STAA Information on the status of an ep patent application or granted ep patent

Free format text: STATUS: THE APPLICATION HAS BEEN WITHDRAWN

18W Application withdrawn

Withdrawal date: 19930408