JPS6244969U - - Google Patents

Info

Publication number
JPS6244969U
JPS6244969U JP13156485U JP13156485U JPS6244969U JP S6244969 U JPS6244969 U JP S6244969U JP 13156485 U JP13156485 U JP 13156485U JP 13156485 U JP13156485 U JP 13156485U JP S6244969 U JPS6244969 U JP S6244969U
Authority
JP
Japan
Prior art keywords
actuator
prime mover
switched
switching operation
operation valve
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
JP13156485U
Other languages
English (en)
Other versions
JPH0352284Y2 (ja
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 filed Critical
Priority to JP1985131564U priority Critical patent/JPH0352284Y2/ja
Publication of JPS6244969U publication Critical patent/JPS6244969U/ja
Application granted granted Critical
Publication of JPH0352284Y2 publication Critical patent/JPH0352284Y2/ja
Expired legal-status Critical Current

Links

Landscapes

  • Operation Control Of Excavators (AREA)
  • Control Of Vehicle Engines Or Engines For Specific Uses (AREA)
  • Fluid-Pressure Circuits (AREA)

Description

【図面の簡単な説明】
第１図は本考案の第１実施例を示す油圧回路図
、第２図は第２実施例を示す油圧回路図、第３図
は第３実施例を示す油圧回路図、第４図は本考案
の切換操作弁とパイロツト弁のストロークの相対
特性図、第５図は従来例を示す油圧回路の機構図
である。 １：原動機、２：調速機、３，４，５：油圧ポ
ンプ、２４ａ，２４ｂ，２４ｃ，２５ａ，２５ｂ
，２５ｃ：油圧系アクチユエータ、３４ａ，３４
ｂ，３４ｃ，３５ａ，３５ｂ，３５ｃ，３５ｄ：
切換操作弁、４４ａ，４４ｂ，４４ｃ，４５ａ，
４５ｂ，４５ｃ，４５ｄ：パイロツト弁。

Claims (1)

    【実用新案登録請求の範囲】
  1. 建設機械動力源の調速機構付原動機によつて油
    圧ポンプを駆動し、該油圧ポンプで各切換操作弁
    を介し複数の油圧系アクチユエータを駆動するア
    クチユエータ油圧回路において、前記各切換操作
    弁に連動するパイロツト弁をそれぞれに設けて、
    該各パイロツト弁は前記切換操作弁のアクチユエ
    ータ作動側への切換え前に切換えられて前記原動
    機の定格回転制御信号を出力するとともに、アク
    チユエータ不作動側への切換え時に切換えられて
    前記原動機の低速回転制御信号を出力する原動機
    制御機構を設けたことを特徴とする建設機械のア
    クチユエータ油圧回路。
JP1985131564U 1985-08-30 1985-08-30 Expired JPH0352284Y2 (ja)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP1985131564U JPH0352284Y2 (ja) 1985-08-30 1985-08-30

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP1985131564U JPH0352284Y2 (ja) 1985-08-30 1985-08-30

Publications (2)

Publication Number Publication Date
JPS6244969U true JPS6244969U (ja) 1987-03-18
JPH0352284Y2 JPH0352284Y2 (ja) 1991-11-12

Family

ID=31030131

Family Applications (1)

Application Number Title Priority Date Filing Date
JP1985131564U Expired JPH0352284Y2 (ja) 1985-08-30 1985-08-30

Country Status (1)

Country Link
JP (1) JPH0352284Y2 (ja)

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5384301A (en) * 1976-12-29 1978-07-25 Yutani Juko Kk Hydraulic circuit for excavator
JPS5722920A (en) * 1980-07-18 1982-02-06 Japan Steel Works Ltd:The Engine control device of construction machine

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5384301A (en) * 1976-12-29 1978-07-25 Yutani Juko Kk Hydraulic circuit for excavator
JPS5722920A (en) * 1980-07-18 1982-02-06 Japan Steel Works Ltd:The Engine control device of construction machine

Also Published As

Publication number Publication date
JPH0352284Y2 (ja) 1991-11-12

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