JPH0226651U - - Google Patents

Info

Publication number
JPH0226651U
JPH0226651U JP10207288U JP10207288U JPH0226651U JP H0226651 U JPH0226651 U JP H0226651U JP 10207288 U JP10207288 U JP 10207288U JP 10207288 U JP10207288 U JP 10207288U JP H0226651 U JPH0226651 U JP H0226651U
Authority
JP
Japan
Prior art keywords
pressure
valve
hydraulic
pilot
circuit
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
JP10207288U
Other languages
English (en)
Other versions
JPH0728211Y2 (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 JP1988102072U priority Critical patent/JPH0728211Y2/ja
Priority to PCT/JP1989/000798 priority patent/WO1990001588A1/ja
Priority to EP19890909042 priority patent/EP0381778A4/en
Priority to US07/465,261 priority patent/US5174190A/en
Publication of JPH0226651U publication Critical patent/JPH0226651U/ja
Priority to KR1019900700689A priority patent/KR900702150A/ko
Priority to US07/996,191 priority patent/US5320025A/en
Application granted granted Critical
Publication of JPH0728211Y2 publication Critical patent/JPH0728211Y2/ja
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

Links

Landscapes

  • Operation Control Of Excavators (AREA)
  • Forklifts And Lifting Vehicles (AREA)

Description

【図面の簡単な説明】
第１図ａはこの考案による作業機油圧回路の一
実施例、第１図ｂはパイロツト回路の圧力とパイ
ロツトバルブのストロークとの関係を示すグラフ
、第１図ｃはすくい込み作業時の作業機油圧供給
流量を示すグラフ、第１図ｄはすくい込み作業時
のバケト刃先軌跡を示すグラフ、第２図、第３図
及び第４図はこの考案による別の実施例、第５図
はシヨベルローダの全体概要図、第６図は従来の
作業機油圧回路の一例、第７図ａ，ｂ，ｃは第６
図に示した従来の作業機油圧回路における問題点
を説明するためのグラフならびに説明図である。 １０，１０′，３０，４０……油圧作業機速度
調整装置、１１，３１，４１……切換弁、１２，
４２……調整弁、１４，１４′……パイロツト配
管、３２……減圧弁。

Claims (1)

    【実用新案登録請求の範囲】
  1. 油圧力によりバケツトを傾斜及び上昇下降させ
    る作業機用油圧装置であつて、油圧パイロツトバ
    ルブのパイロツト圧力によつて作動する作業機操
    作弁を備えた油圧回路において、パイロツト回路
    の圧力を調整する調圧弁と、該調圧弁を油圧シリ
    ンダの圧力に従つて作動あるいは非作動状態に切
    換える切換弁を備え、油圧シリンダが高圧になつ
    た時、上記切換弁が上記調圧弁を作動させるよう
    に切換り、パイロツト回路の圧油を調圧すること
    によつて作業機操作弁の最大吐出流量を規制する
    ようにしたことを特徴とする油圧作業機速度調整
    装置。
JP1988102072U 1988-08-02 1988-08-02 油圧作業機 Expired - Lifetime JPH0728211Y2 (ja)

Priority Applications (6)

Application Number Priority Date Filing Date Title
JP1988102072U JPH0728211Y2 (ja) 1988-08-02 1988-08-02 油圧作業機
PCT/JP1989/000798 WO1990001588A1 (fr) 1988-08-02 1989-08-02 Regulation de vitesse de deplacement pour machines de chantier a moteur hydraulique
EP19890909042 EP0381778A4 (en) 1988-08-02 1989-08-02 Moving speed regulator for hydraulically driven working machines
US07/465,261 US5174190A (en) 1988-08-02 1989-08-02 Moving speed regulator for hydraulically driven work implement
KR1019900700689A KR900702150A (ko) 1988-08-02 1990-04-02 유압구동 작업기의 이동속도 조정장치
US07/996,191 US5320025A (en) 1988-08-02 1992-12-23 Moving speed regulator for hydraulically driven work implement

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP1988102072U JPH0728211Y2 (ja) 1988-08-02 1988-08-02 油圧作業機

Publications (2)

Publication Number Publication Date
JPH0226651U true JPH0226651U (ja) 1990-02-21
JPH0728211Y2 JPH0728211Y2 (ja) 1995-06-28

Family

ID=31331641

Family Applications (1)

Application Number Title Priority Date Filing Date
JP1988102072U Expired - Lifetime JPH0728211Y2 (ja) 1988-08-02 1988-08-02 油圧作業機

Country Status (1)

Country Link
JP (1) JPH0728211Y2 (ja)

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS61294031A (ja) * 1985-06-19 1986-12-24 Hitachi Constr Mach Co Ltd 掘削機の油圧回路

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS61294031A (ja) * 1985-06-19 1986-12-24 Hitachi Constr Mach Co Ltd 掘削機の油圧回路

Also Published As

Publication number Publication date
JPH0728211Y2 (ja) 1995-06-28

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