JPS6095272U - hydraulic control device - Google Patents

hydraulic control device

Info

Publication number
JPS6095272U
JPS6095272U JP18719383U JP18719383U JPS6095272U JP S6095272 U JPS6095272 U JP S6095272U JP 18719383 U JP18719383 U JP 18719383U JP 18719383 U JP18719383 U JP 18719383U JP S6095272 U JPS6095272 U JP S6095272U
Authority
JP
Japan
Prior art keywords
control device
hydraulic control
spool
passage
range
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
JP18719383U
Other languages
Japanese (ja)
Inventor
大関　雅彦
治彦 川崎
浅岡　正晴
秀明 篠原
Original Assignee
カヤバ工業株式会社
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 カヤバ工業株式会社 filed Critical カヤバ工業株式会社
Priority to JP18719383U priority Critical patent/JPS6095272U/en
Publication of JPS6095272U publication Critical patent/JPS6095272U/en
Pending legal-status Critical Current

Links

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]

図面第１図は従来の回路図、第２図はｉ小流量制御時の
特性を示すグラフ、第３図はこの考案の実施例を示す切
換弁の断面図である。 Ｐ・・・・・・可変吐出ポンプ、■・・・・・・切換弁
、２０・・・・・・スプール、２９・・・・・・流入通
路、３１及び３２・・・・・・連通路を構成する連通孔
及び導入路、３３，３４・・・・・・オリフィス、３５
．３６・・・・・・ノツチ。FIG. 1 is a conventional circuit diagram, FIG. 2 is a graph showing characteristics during i-small flow rate control, and FIG. 3 is a sectional view of a switching valve showing an embodiment of this invention. P...Variable discharge pump, ■...Switching valve, 20...Spool, 29...Inflow passage, 31 and 32...Connection Communication hole and introduction path constituting a passage, 33, 34... Orifice, 35
．． 36...notsuchi.

Claims (1)

【実用新案登録請求の範囲】[Scope of utility model registration request] クローズドセンタ形の切換弁を複数連接し、これら切換
弁をパイロット圧で動作されるとともに、このパイロッ
ト圧に応じてポンプの吐出量を制御する油圧制御装置に
おいて、スプールに形成した連通路の一端を、スプール
の微小移動範囲内でポンプに連通した流入通路に開口さ
せ、しかも、この連通路の他端を、少なくとも上記微小
移動範囲内でタンク通路に連通させる一方、このタンク
通路側に開口する連通路端に、オリフィスあるいはノツ
チ等を形成した油圧制御装置。In a hydraulic control device that connects a plurality of closed center type switching valves, operates these switching valves using pilot pressure, and controls the pump discharge amount according to this pilot pressure, one end of the communication passage formed in the spool is used. , the inflow passage communicating with the pump is opened within the range of minute movement of the spool, and the other end of this communication passage is communicated with the tank passage at least within the range of minute movement of the spool; A hydraulic control device with an orifice or notch formed at the end of the passage.
JP18719383U 1983-12-03 1983-12-03 hydraulic control device Pending JPS6095272U (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP18719383U JPS6095272U (en) 1983-12-03 1983-12-03 hydraulic control device

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP18719383U JPS6095272U (en) 1983-12-03 1983-12-03 hydraulic control device

Publications (1)

Publication Number Publication Date
JPS6095272U true JPS6095272U (en) 1985-06-28

Family

ID=30404134

Family Applications (1)

Application Number Title Priority Date Filing Date
JP18719383U Pending JPS6095272U (en) 1983-12-03 1983-12-03 hydraulic control device

Country Status (1)

Country Link
JP (1) JPS6095272U (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2018159401A (en) * 2017-03-22 2018-10-11 株式会社クボタ Hydraulic system for work machine
US10408358B2 (en) 2014-11-07 2019-09-10 Kyb Corporation Load sensing valve device

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US10408358B2 (en) 2014-11-07 2019-09-10 Kyb Corporation Load sensing valve device
JP2018159401A (en) * 2017-03-22 2018-10-11 株式会社クボタ Hydraulic system for work machine

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