JPH0549773B2 - - Google Patents

Info

Publication number
JPH0549773B2
JPH0549773B2 JP61000648A JP64886A JPH0549773B2 JP H0549773 B2 JPH0549773 B2 JP H0549773B2 JP 61000648 A JP61000648 A JP 61000648A JP 64886 A JP64886 A JP 64886A JP H0549773 B2 JPH0549773 B2 JP H0549773B2
Authority
JP
Japan
Prior art keywords
maximum
engine
auto
control device
rotation speed
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.)
Expired - Lifetime
Application number
JP61000648A
Other languages
English (en)
Japanese (ja)
Other versions
JPS62160331A (ja
Inventor
Masakazu Haga
Toichi Hirata
Hideaki Tanaka
Genroku Sugyama
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.)
Hitachi Construction Machinery Co Ltd
Original Assignee
Hitachi Construction Machinery Co 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 Hitachi Construction Machinery Co Ltd filed Critical Hitachi Construction Machinery Co Ltd
Priority to JP61000648A priority Critical patent/JPS62160331A/ja
Priority to KR1019860007274A priority patent/KR910009257B1/ko
Priority to EP86112330A priority patent/EP0214633B1/en
Priority to US06/904,118 priority patent/US4697418A/en
Priority to DE8686112330T priority patent/DE3661745D1/de
Priority to CN86106816A priority patent/CN1011802B/zh
Publication of JPS62160331A publication Critical patent/JPS62160331A/ja
Publication of JPH0549773B2 publication Critical patent/JPH0549773B2/ja
Granted 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
    • 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
    • E02F9/2232—Control of flow rate; Load sensing arrangements using one or more variable displacement pumps
    • E02F9/2235—Control of flow rate; Load sensing arrangements using one or more variable displacement pumps including an electronic controller
    • 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
    • E02F9/2246—Control of prime movers, e.g. depending on the hydraulic load of work tools
    • 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
    • E02F9/2282—Systems using center bypass type changeover valves
    • 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
    • E02F9/2296—Systems with a variable displacement pump

Landscapes

  • Engineering & Computer Science (AREA)
  • Mining & Mineral Resources (AREA)
  • Civil Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Structural Engineering (AREA)
  • Physics & Mathematics (AREA)
  • Fluid Mechanics (AREA)
  • Operation Control Of Excavators (AREA)
  • Motor Power Transmission Devices (AREA)
  • Fluid-Pressure Circuits (AREA)
  • Control Of Fluid Gearings (AREA)
JP61000648A 1985-09-07 1986-01-08 エンジン・油圧ポンプの制御装置 Granted JPS62160331A (ja)

Priority Applications (6)

Application Number Priority Date Filing Date Title
JP61000648A JPS62160331A (ja) 1986-01-08 1986-01-08 エンジン・油圧ポンプの制御装置
KR1019860007274A KR910009257B1 (ko) 1985-09-07 1986-08-30 유압건설기계의 제어시스템
EP86112330A EP0214633B1 (en) 1985-09-07 1986-09-05 Control system for hydraulically-operated construction machinery
US06/904,118 US4697418A (en) 1985-09-07 1986-09-05 Control system for hydraulically-operated construction machinery
DE8686112330T DE3661745D1 (en) 1985-09-07 1986-09-05 Control system for hydraulically-operated construction machinery
CN86106816A CN1011802B (zh) 1985-09-07 1986-09-06 液压建筑机械的控制系统

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP61000648A JPS62160331A (ja) 1986-01-08 1986-01-08 エンジン・油圧ポンプの制御装置

Publications (2)

Publication Number Publication Date
JPS62160331A JPS62160331A (ja) 1987-07-16
JPH0549773B2 true JPH0549773B2 (US20080293856A1-20081127-C00150.png) 1993-07-27

Family

ID=11479525

Family Applications (1)

Application Number Title Priority Date Filing Date
JP61000648A Granted JPS62160331A (ja) 1985-09-07 1986-01-08 エンジン・油圧ポンプの制御装置

Country Status (1)

Country Link
JP (1) JPS62160331A (US20080293856A1-20081127-C00150.png)

Families Citing this family (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2772537B2 (ja) * 1989-03-10 1998-07-02 日立建機株式会社 建設機械
EP0553347B1 (en) * 1990-02-20 1997-04-16 Komatsu, Ltd. Hydraulic driving device of construction machinery
JPH0658209U (ja) * 1993-01-22 1994-08-12 日本車輌製造株式会社 建設機械の油圧回路
JP2707413B2 (ja) * 1994-06-02 1998-01-28 新キャタピラー三菱株式会社 可変容量型油圧ポンプが装備された油圧式建設機械
JP4188902B2 (ja) 2004-11-22 2008-12-03 日立建機株式会社 油圧建設機械の制御装置
JP4024820B2 (ja) * 2006-08-01 2007-12-19 住友建機製造株式会社 建設機械の制御装置
JP6124302B2 (ja) * 2013-11-05 2017-05-10 キャタピラー エス エー アール エル 作業機械

Also Published As

Publication number Publication date
JPS62160331A (ja) 1987-07-16

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Legal Events

Date Code Title Description
EXPY Cancellation because of completion of term