JPS61173561U - - Google Patents

Info

Publication number
JPS61173561U
JPS61173561U JP5684585U JP5684585U JPS61173561U JP S61173561 U JPS61173561 U JP S61173561U JP 5684585 U JP5684585 U JP 5684585U JP 5684585 U JP5684585 U JP 5684585U JP S61173561 U JPS61173561 U JP S61173561U
Authority
JP
Japan
Prior art keywords
boom cylinder
pilot
check valve
cylinder
pilot check
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.)
Pending
Application number
JP5684585U
Other languages
English (en)
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 JP5684585U priority Critical patent/JPS61173561U/ja
Publication of JPS61173561U publication Critical patent/JPS61173561U/ja
Pending legal-status Critical Current

Links

Description

【図面の簡単な説明】
図面は本考案一実施例の構成説明図である。 ４はアームシリンダ、７，１４はパイロツトチ
エツク弁、１３はブームシリンダ、Ａはパイロツ
ト切換弁。

Claims (1)

    【実用新案登録請求の範囲】
  1. アームシリンダ操作回路１のアームシリンダ４
    のロツド側管路６にアームシリンダ４側のパイロ
    ツトチエツク弁７を設けると共にブームシリンダ
    操作回路２のブームシリンダ１３のヘツド側管路
    １１にブームシリンダ１３側のパイロツトチエツ
    ク弁１４を設け、パイロツトポンプ１７の吐出側
    に、作業機レバーの動きにより作動するパイロツ
    ト切換弁Ａを設け、パイロツト切換弁Ａのポート
    をパイロツト管路１８，２２を介してパイロツト
    チエツク弁７，１４に接続し、アームシリンダ４
    のヘツド側室４Ａをパイロツト管路１９を介して
    パイロツトチエツク弁７に接続すると共にブーム
    シリンダ１３のロツド側室１３Ｂをパイロツト管
    路２３を介してパイロツトチエツク弁１４に接続
    したことを特徴とするパワーシヨベルの作業機降
    下防止装置。
JP5684585U 1985-04-18 1985-04-18 Pending JPS61173561U (ja)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP5684585U JPS61173561U (ja) 1985-04-18 1985-04-18

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP5684585U JPS61173561U (ja) 1985-04-18 1985-04-18

Publications (1)

Publication Number Publication Date
JPS61173561U true JPS61173561U (ja) 1986-10-28

Family

ID=30580829

Family Applications (1)

Application Number Title Priority Date Filing Date
JP5684585U Pending JPS61173561U (ja) 1985-04-18 1985-04-18

Country Status (1)

Country Link
JP (1) JPS61173561U (ja)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1992022712A1 (en) * 1991-06-12 1992-12-23 Kabushiki Kaisha Komatsu Seisakusho Hydraulic circuit in swingable working apparatus

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1992022712A1 (en) * 1991-06-12 1992-12-23 Kabushiki Kaisha Komatsu Seisakusho Hydraulic circuit in swingable working apparatus

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