JPH0349290U - - Google Patents

Info

Publication number
JPH0349290U
JPH0349290U JP11050689U JP11050689U JPH0349290U JP H0349290 U JPH0349290 U JP H0349290U JP 11050689 U JP11050689 U JP 11050689U JP 11050689 U JP11050689 U JP 11050689U JP H0349290 U JPH0349290 U JP H0349290U
Authority
JP
Japan
Prior art keywords
flow rate
valve
construction machine
control valve
hydraulic 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.)
Pending
Application number
JP11050689U
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 JP11050689U priority Critical patent/JPH0349290U/ja
Publication of JPH0349290U publication Critical patent/JPH0349290U/ja
Pending legal-status Critical Current

Links

Landscapes

  • Fluid-Pressure Circuits (AREA)
  • Jib Cranes (AREA)

Description

【図面の簡単な説明】
第１図は本考案の実施例を示す回路図、第２図
は従来例の回路図、第３図はエンジン回転数とポ
ンプ吐出量の関係を示す特性図、第４図はエンジ
ン回転数とポンプ吐出量の関係を示す特性図、第
５図はバルブストロークと２次流量の関係を示す
特性図、第６図は１次流量と２次流量の関係を示
す特性図である。 １…エンジン、２…ギヤボツクス、３…旋回用
油圧ポンプ、４…旋回用以外の油圧ポンプ、５…
制御弁、６…旋回モータ、１０…スイツチ、１２
…流量調整弁、１３…バイパス弁、１３ａ…バイ
パス回路。

Claims (1)

  1. 【実用新案登録請求の範囲】 １ エンジン１によつて駆動される旋回用油圧ポ
    ンプ３と、旋回モータ６に対する圧油の方向およ
    び流量を制御する制御弁５との間に、一定以上の
    １次流量があると一定流量のみを制御弁５へ流し
    、余剰油をタンクに逃がす流量調整弁１２を挿入
    したことを特徴とするクレーン等の建設機械の旋
    回用油圧回路。 ２ 流量調整弁１２と並列に開閉自在のバイパス
    弁１３を設けたことをを特徴とする請求項１）記
    載のクレーン等の建設機械の旋回用油圧回路。
JP11050689U 1989-09-21 1989-09-21 Pending JPH0349290U (ja)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP11050689U JPH0349290U (ja) 1989-09-21 1989-09-21

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP11050689U JPH0349290U (ja) 1989-09-21 1989-09-21

Publications (1)

Publication Number Publication Date
JPH0349290U true JPH0349290U (ja) 1991-05-14

Family

ID=31659035

Family Applications (1)

Application Number Title Priority Date Filing Date
JP11050689U Pending JPH0349290U (ja) 1989-09-21 1989-09-21

Country Status (1)

Country Link
JP (1) JPH0349290U (ja)

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5517052B2 (ja) * 1976-08-04 1980-05-08

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5517052B2 (ja) * 1976-08-04 1980-05-08

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