EP0399043A4 - Working machine for construction vehicles and method of operating same - Google Patents

Working machine for construction vehicles and method of operating same

Info

Publication number
EP0399043A4
EP0399043A4 EP19880910129 EP88910129A EP0399043A4 EP 0399043 A4 EP0399043 A4 EP 0399043A4 EP 19880910129 EP19880910129 EP 19880910129 EP 88910129 A EP88910129 A EP 88910129A EP 0399043 A4 EP0399043 A4 EP 0399043A4
Authority
EP
European Patent Office
Prior art keywords
end portion
boom
boom member
working machine
construction vehicles
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.)
Granted
Application number
EP19880910129
Other languages
French (fr)
Other versions
EP0399043B1 (en
EP0399043A1 (en
Inventor
Noboru Kanayama
Hisashi Fukumoto
Kuniharu Fujii
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
Priority claimed from JP29946687A external-priority patent/JPH0830347B2/en
Priority claimed from JP29946587A external-priority patent/JPH0830346B2/en
Priority claimed from JP1823188A external-priority patent/JPH028419A/en
Application filed by Komatsu Ltd filed Critical Komatsu Ltd
Publication of EP0399043A1 publication Critical patent/EP0399043A1/en
Publication of EP0399043A4 publication Critical patent/EP0399043A4/en
Application granted granted Critical
Publication of EP0399043B1 publication Critical patent/EP0399043B1/en
Anticipated expiration legal-status Critical
Expired - Lifetime 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
    • E02F9/20—Drives; Control devices
    • E02F9/22—Hydraulic or pneumatic drives
    • E02F9/2278—Hydraulic circuits
    • E02F9/2292—Systems with two or more pumps
    • 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
    • E02F3/30—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 with a dipper-arm pivoted on a cantilever beam, i.e. boom
    • E02F3/301—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 with a dipper-arm pivoted on a cantilever beam, i.e. boom with more than two arms (boom included), e.g. two-part boom with additional dipper-arm
    • 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
    • E02F3/30—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 with a dipper-arm pivoted on a cantilever beam, i.e. boom
    • E02F3/32—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 with a dipper-arm pivoted on a cantilever beam, i.e. boom working downwardly and towards the machine, e.g. with backhoes
    • 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
    • E02F9/22—Hydraulic or pneumatic drives
    • E02F9/2221—Control of flow rate; Load sensing arrangements
    • E02F9/2239—Control of flow rate; Load sensing arrangements using two or more pumps with cross-assistance

Abstract

A working machine for construction vehicles, which is capable of being folded compactly when it is at rest and being converted into operational condition easily when it is to be operated, without requiring any special apparatus; and a method of operating the same working machine. This working machine is provided with a boom divided into first and second boom members, an arm connected pivotably to the front end portion of the second boom member, a bucket connected pivotably to the front end portion of the arm, and aplurality of hydraulic cylinders for driving these elements. The first boom member (12) is supported pivotably on one side of the base end portion thereof on a predetermined portion (13) of a chassis (10), and at a front end portion (15) thereof on one side of the base end portion of the second boom member (14). The first boom member (12) is adapted to be turned vertically by a first boom cylinder (17) which is supported pivotably at its base end portion on another predetermined portion (18) of the chassis, and at its front end section on a predetermined portion (20) of the front end section of the first boom member, the posture of the second boom member with respect to the first boom member being maintained by a retainer means (A).
EP88910129A 1987-11-26 1988-11-25 Method of operating a working machine for construction vehicles Expired - Lifetime EP0399043B1 (en)

Applications Claiming Priority (7)

Application Number Priority Date Filing Date Title
JP29946687A JPH0830347B2 (en) 1987-11-26 1987-11-26 Apparatus and method for changing working machine attitude of hydraulic excavator
JP299466/87 1987-11-26
JP29946587A JPH0830346B2 (en) 1987-11-26 1987-11-26 Apparatus and method for changing working machine attitude of hydraulic excavator
JP299465/87 1987-11-26
JP1823188A JPH028419A (en) 1988-01-28 1988-01-28 Housing method for operating machine of hydraulic excavator
JP18231/88 1988-01-28
PCT/JP1988/001198 WO1989004894A1 (en) 1987-11-26 1988-11-25 Working machine for construction vehicles and method of operating same

Publications (3)

Publication Number Publication Date
EP0399043A1 EP0399043A1 (en) 1990-11-28
EP0399043A4 true EP0399043A4 (en) 1991-09-25
EP0399043B1 EP0399043B1 (en) 1996-01-10

Family

ID=27282137

Family Applications (1)

Application Number Title Priority Date Filing Date
EP88910129A Expired - Lifetime EP0399043B1 (en) 1987-11-26 1988-11-25 Method of operating a working machine for construction vehicles

Country Status (3)

Country Link
EP (1) EP0399043B1 (en)
DE (1) DE3854897T2 (en)
WO (1) WO1989004894A1 (en)

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP3313784B2 (en) * 1992-09-30 2002-08-12 株式会社小松製作所 Working machine equipment for construction machinery
US5423655A (en) * 1993-01-14 1995-06-13 Kabushiki Kaisha Komatsu Seisakusho Working machine for hydraulic excavator
FR2718769B1 (en) * 1994-04-13 1996-05-31 Gibert Pierre Jean Marie Compact set of two articulated arms, the free end of which is fitted with an equipment carrier, intended for handling vehicles and earthmoving.
JP3446847B2 (en) * 1994-11-08 2003-09-16 株式会社小松製作所 Work vehicle

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1185523B (en) * 1961-04-29 1965-01-14 Liebherr Hans Removal device for clay
DE2459489A1 (en) * 1974-07-18 1976-01-29 Krone Bernhard Gmbh Maschf Surface grading power tool with additional equipment - has hydraulic actuators for scraper blade and additional tools

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB1202279A (en) * 1966-11-18 1970-08-12 Massey Ferguson Services Nv Improvements in material handling devices which include a pivotable boom
JPS4879101U (en) * 1971-12-28 1973-09-28
JPS5920443Y2 (en) * 1979-07-27 1984-06-14 株式会社豊田自動織機製作所 Lift arm in skid steer shovel
JPS6042123Y2 (en) * 1980-04-17 1985-12-23 株式会社小松製作所 hydraulic excavator
JPS62103860U (en) * 1985-12-20 1987-07-02

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1185523B (en) * 1961-04-29 1965-01-14 Liebherr Hans Removal device for clay
DE2459489A1 (en) * 1974-07-18 1976-01-29 Krone Bernhard Gmbh Maschf Surface grading power tool with additional equipment - has hydraulic actuators for scraper blade and additional tools

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
See also references of WO8904894A1 *

Also Published As

Publication number Publication date
EP0399043B1 (en) 1996-01-10
DE3854897D1 (en) 1996-02-22
EP0399043A1 (en) 1990-11-28
DE3854897T2 (en) 1996-08-14
WO1989004894A1 (en) 1989-06-01

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