JPS6085601U - Hydraulic circuit device for hydraulic work equipment - Google Patents

Hydraulic circuit device for hydraulic work equipment

Info

Publication number
JPS6085601U
JPS6085601U JP17539983U JP17539983U JPS6085601U JP S6085601 U JPS6085601 U JP S6085601U JP 17539983 U JP17539983 U JP 17539983U JP 17539983 U JP17539983 U JP 17539983U JP S6085601 U JPS6085601 U JP S6085601U
Authority
JP
Japan
Prior art keywords
hydraulic
circuit device
set pressure
hydraulic circuit
work equipment
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
JP17539983U
Other languages
Japanese (ja)
Inventor
大二郎 伊藤
Original Assignee
株式会社小松製作所
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 株式会社小松製作所 filed Critical 株式会社小松製作所
Priority to JP17539983U priority Critical patent/JPS6085601U/en
Publication of JPS6085601U publication Critical patent/JPS6085601U/en
Pending legal-status Critical Current

Links

Landscapes

  • Operation Control Of Excavators (AREA)
  • Fluid-Pressure Circuits (AREA)

Abstract

(57)【要約】本公報は電子出願前の出願データであるた
め要約のデータは記録されません。
(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

【図面の簡単な説明】[Brief explanation of drawings]

図面は本考案の実施例を示す油圧回路図である。 la、lb、lcは油圧ポンプ、2はエンジン、3aw
 3b、3cは油圧回路、14は2段リリーフ弁。
The drawing is a hydraulic circuit diagram showing an embodiment of the present invention. la, lb, lc are hydraulic pumps, 2 is engine, 3aw
3b and 3c are hydraulic circuits, and 14 is a two-stage relief valve.

Claims (1)

【実用新案登録請求の範囲】[Scope of utility model registration request] 1台のエンジン2にて複数個の油圧ポンプ1a、lbt
  lcを駆動するようにした油圧作業機の油圧回路装
置にiいて、上記複数個の油圧ポンプla、lb、lc
のうちの少なくとも1個の油圧ポンプ1bに接続した油
圧回路3b内に、上記複数個の油圧ポンプla、lb、
meの全てに負荷が作用したときの最高設定圧と、この
最高設定圧よりも高い増加設定圧の2段に設定圧をとる
ことができるようにした2段すリーフ弁14を接続し、
この2段すリーフ弁14の切換手段を設けたことを特徴
とする油圧作業機の油圧回路装置。
Multiple hydraulic pumps 1a, lbt in one engine 2
In the hydraulic circuit device of the hydraulic working machine configured to drive the lc, the plurality of hydraulic pumps la, lb, and lc are installed.
In the hydraulic circuit 3b connected to at least one hydraulic pump 1b, the plurality of hydraulic pumps la, lb,
A two-stage leaf valve 14 is connected, which is capable of setting a set pressure in two stages: a maximum set pressure when a load is applied to all of the me, and an increased set pressure higher than this maximum set pressure,
A hydraulic circuit device for a hydraulic working machine characterized by being provided with switching means for the two-stage leaf valve 14.
JP17539983U 1983-11-15 1983-11-15 Hydraulic circuit device for hydraulic work equipment Pending JPS6085601U (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP17539983U JPS6085601U (en) 1983-11-15 1983-11-15 Hydraulic circuit device for hydraulic work equipment

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP17539983U JPS6085601U (en) 1983-11-15 1983-11-15 Hydraulic circuit device for hydraulic work equipment

Publications (1)

Publication Number Publication Date
JPS6085601U true JPS6085601U (en) 1985-06-13

Family

ID=30381612

Family Applications (1)

Application Number Title Priority Date Filing Date
JP17539983U Pending JPS6085601U (en) 1983-11-15 1983-11-15 Hydraulic circuit device for hydraulic work equipment

Country Status (1)

Country Link
JP (1) JPS6085601U (en)

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