EP0838554A4 - Working machine - Google Patents

Working machine

Info

Publication number
EP0838554A4
EP0838554A4 EP96922250A EP96922250A EP0838554A4 EP 0838554 A4 EP0838554 A4 EP 0838554A4 EP 96922250 A EP96922250 A EP 96922250A EP 96922250 A EP96922250 A EP 96922250A EP 0838554 A4 EP0838554 A4 EP 0838554A4
Authority
EP
European Patent Office
Prior art keywords
arm
cylinder
boom
bucket
fixed vertically
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Withdrawn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
EP96922250A
Other languages
German (de)
French (fr)
Other versions
EP0838554A1 (en
Inventor
Shigeru Shinohara
Takayuki Muto
Mitsuru Arai
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 EP0838554A1 publication Critical patent/EP0838554A1/en
Publication of EP0838554A4 publication Critical patent/EP0838554A4/en
Withdrawn legal-status Critical Current

Links

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
    • E02F3/96—Dredgers; Soil-shifting machines mechanically-driven with arrangements for alternate or simultaneous use of different digging elements
    • E02F3/967—Dredgers; Soil-shifting machines mechanically-driven with arrangements for alternate or simultaneous use of different digging elements of compacting-type tools
    • 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
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B25—HAND TOOLS; PORTABLE POWER-DRIVEN TOOLS; MANIPULATORS
    • B25D—PERCUSSIVE TOOLS
    • B25D9/00—Portable percussive tools with fluid-pressure drive, i.e. driven directly by fluids, e.g. having several percussive tool bits operated simultaneously
    • B25D9/14—Control devices for the reciprocating piston
    • B25D9/145—Control devices for the reciprocating piston for hydraulically actuated hammers having an accumulator
    • 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
    • E02F9/2203—Arrangements for controlling the attitude of actuators, e.g. speed, floating function
    • E02F9/221—Arrangements for controlling the attitude of actuators, e.g. speed, floating function for generating actuator vibration

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Mining & Mineral Resources (AREA)
  • Civil Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Structural Engineering (AREA)
  • Physics & Mathematics (AREA)
  • Fluid Mechanics (AREA)
  • Shovels (AREA)

Abstract

A working machine in which a boom (5) is fixed vertically pivotably to a vehicle body (4), to which boom an arm (7) is fixed vertically pivotably with a bucket (10) fixed vertically pivotably to the arm, the boom, arm and bucket being driven by a boom cylinder (6), an arm cylinder (8) and a bucket cylinder (11) repectively. A vibration generator (13) is fixed to the arm, and a rolling-compaction member (19), a chisel (58) or a pile driver to the vibration generator interchangeably. A float valve (84) is provided which allows an expansion chamber to communicate with a contraction chamber of at least one of the boom cylinder, arm cylinder and bucket cylinder, and establishes or cuts off communication between them and a tank. The float valve is opened when a rolling-compaction operation is carried out, and closed when a breaking operation and a pipe driving operation are carried out.
EP96922250A 1995-07-06 1996-07-05 Working machine Withdrawn EP0838554A4 (en)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
JP17104495 1995-07-06
JP171044/95 1995-07-06
PCT/JP1996/001881 WO1997002385A1 (en) 1995-07-06 1996-07-05 Working machine

Publications (2)

Publication Number Publication Date
EP0838554A1 EP0838554A1 (en) 1998-04-29
EP0838554A4 true EP0838554A4 (en) 1999-05-06

Family

ID=15916055

Family Applications (1)

Application Number Title Priority Date Filing Date
EP96922250A Withdrawn EP0838554A4 (en) 1995-07-06 1996-07-05 Working machine

Country Status (3)

Country Link
EP (1) EP0838554A4 (en)
KR (1) KR100429093B1 (en)
WO (1) WO1997002385A1 (en)

Families Citing this family (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE19844313A1 (en) * 1998-09-28 2000-04-06 Peitz Hermann Hydraulic apparatus such as excavator, with soil compacting device able to be fitted to arm
FR2881764B1 (en) * 2005-02-10 2007-03-16 Montabert Soc Par Actions Simp DAMAGE APPARATUS FOR ASSOCIATING WITH A BREEZE-ROCHE
CN102720198B (en) * 2012-05-25 2014-07-16 中冶交通工程技术有限公司 Vibration device for precast tubular pile and precast tubular pile construction method
CN104032789A (en) * 2014-06-27 2014-09-10 国家电网公司 Earthwork punning structure used with excavator
US10384336B2 (en) 2016-04-12 2019-08-20 Caterpillar Inc. Hydraulic hammer assembly

Family Cites Families (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS6314653U (en) * 1986-07-10 1988-01-30
JPS6356705U (en) * 1986-09-24 1988-04-15
JPH025410U (en) * 1988-06-17 1990-01-16
JPH0644672Y2 (en) * 1992-08-20 1994-11-16 株式会社ムサシノキカイ Dry laminating equipment
KR950008317Y1 (en) * 1993-08-11 1995-10-06 주식회사 토탈산업 An automatic ejecting nozzle
JPH07216864A (en) * 1994-01-27 1995-08-15 Katsuyuki Hasegawa Rolling method and rolling unit therefor

Non-Patent Citations (2)

* Cited by examiner, † Cited by third party
Title
No further relevant documents disclosed *
See also references of WO9702385A1 *

Also Published As

Publication number Publication date
EP0838554A1 (en) 1998-04-29
KR19990028410A (en) 1999-04-15
KR100429093B1 (en) 2004-07-30
WO1997002385A1 (en) 1997-01-23

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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

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17P Request for examination filed

Effective date: 19971223

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A4 Supplementary search report drawn up and despatched

Effective date: 19990318

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Ipc: E02F 9/22

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18W Application withdrawn

Withdrawal date: 20000428