JPH0312004U - - Google Patents

Info

Publication number
JPH0312004U
JPH0312004U JP1989069953U JP6995389U JPH0312004U JP H0312004 U JPH0312004 U JP H0312004U JP 1989069953 U JP1989069953 U JP 1989069953U JP 6995389 U JP6995389 U JP 6995389U JP H0312004 U JPH0312004 U JP H0312004U
Authority
JP
Japan
Prior art keywords
valve
regeneration
variable
actuator
directional
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
JP1989069953U
Other languages
Japanese (ja)
Other versions
JP2520760Y2 (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 JP1989069953U priority Critical patent/JP2520760Y2/en
Publication of JPH0312004U publication Critical patent/JPH0312004U/ja
Application granted granted Critical
Publication of JP2520760Y2 publication Critical patent/JP2520760Y2/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

Links

Classifications

    • E—FIXED CONSTRUCTIONS
    • E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
    • E02F—DREDGING; SOIL-SHIFTING
    • E02F9/00—Component parts of dredgers or soil-shifting machines, not restricted to one of the kinds covered by groups E02F3/00 - E02F7/00
    • E02F9/20—Drives; Control devices
    • E02F9/22—Hydraulic or pneumatic drives
    • E02F9/2217—Hydraulic or pneumatic drives with energy recovery arrangements, e.g. using accumulators, flywheels

Landscapes

  • Engineering & Computer Science (AREA)
  • Mining & Mineral Resources (AREA)
  • Civil Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Structural Engineering (AREA)
  • Operation Control Of Excavators (AREA)
  • Fluid-Pressure Circuits (AREA)

Description

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

第１図は本考案の可変の再生弁を有する方向切
換弁を含む切換弁の横断面図。第２図は第１図の
Ａ−Ａ断面図。第３図は本考案の可変の再生弁を
有する方向切換弁を含む回路図。第４図は従来の
再生弁を内蔵した切換弁の縦断面図。第５図は従
来の再生弁を別置きにしたときの概念図。 １……アクチユエータ、１ａ，１ｂ……アクチ
ユエータポート、５ａ……ポンプポート、１０…
…切換弁、３０……再生弁、４０……再生率可変
弁、５０……再生チエツク弁、７０……方向切換
弁。 FIG. 1 is a cross-sectional view of a switching valve including a directional switching valve with a variable regeneration valve according to the present invention. FIG. 2 is a sectional view taken along line AA in FIG. FIG. 3 is a circuit diagram including a directional valve with a variable regeneration valve according to the present invention. FIG. 4 is a vertical sectional view of a switching valve incorporating a conventional regeneration valve. FIG. 5 is a conceptual diagram when the conventional regeneration valve is placed separately. 1... Actuator, 1a, 1b... Actuator port, 5a... Pump port, 10...
...Switching valve, 30...Regeneration valve, 40...Regeneration rate variable valve, 50...Regeneration check valve, 70...Direction switching valve.

Claims (1)

【実用新案登録請求の範囲】 １ 作業機の作動を行うアクチユエータと、アク
チユエータへの給排を切り換える方向切換弁を有
する建設機械において、アクチユエータからタン
クへの戻る油量を再度アクチユエータに給油する
可変の再生弁を方向切換弁に付設して形成したこ
とを特徴とする可変の再生弁を有する方向切換弁
。 ２ 可変の再生弁が再生率可変弁と再生チエツク
弁とよりなる請求項１記載の可変の再生弁を有す
る方向切換弁。 ３ 再生率可変弁がアクチユエータへのポートに
、再生チエツク弁がポンプポートに連結された再
生弁よりなる請求項１記載の可変の再生弁を有す
る方向切換弁。[Scope of Claim for Utility Model Registration] 1. In a construction machine that has an actuator that operates a working machine and a directional control valve that switches supply/discharge to the actuator, a variable control system that adjusts the amount of oil returned from the actuator to a tank to replenish the actuator. A directional switching valve having a variable regeneration valve, characterized in that the regeneration valve is formed by attaching the regeneration valve to the directional switching valve. 2. A directional control valve having a variable regeneration valve according to claim 1, wherein the variable regeneration valve comprises a variable regeneration rate valve and a regeneration check valve. 3. The directional control valve having a variable regeneration valve according to claim 1, wherein the variable regeneration rate valve is a regeneration valve connected to a port to the actuator and the regeneration check valve is connected to a pump port.
JP1989069953U 1989-06-15 1989-06-15 Directional switching valve with variable regeneration valve Expired - Lifetime JP2520760Y2 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP1989069953U JP2520760Y2 (en) 1989-06-15 1989-06-15 Directional switching valve with variable regeneration valve

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP1989069953U JP2520760Y2 (en) 1989-06-15 1989-06-15 Directional switching valve with variable regeneration valve

Publications (2)

Publication Number Publication Date
JPH0312004U true JPH0312004U (en) 1991-02-07
JP2520760Y2 JP2520760Y2 (en) 1996-12-18

Family

ID=31605702

Family Applications (1)

Application Number Title Priority Date Filing Date
JP1989069953U Expired - Lifetime JP2520760Y2 (en) 1989-06-15 1989-06-15 Directional switching valve with variable regeneration valve

Country Status (1)

Country Link
JP (1) JP2520760Y2 (en)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH0234887U (en) * 1988-08-30 1990-03-06
WO1994013959A1 (en) * 1992-12-04 1994-06-23 Hitachi Construction Machinery Co., Ltd. Hydraulic regenerator
WO2011009527A1 (en) * 2009-07-21 2011-01-27 Parker Hannifin Gmbh Hydraulic circuit arrangement for controlling a double-acting working cylinder by means of a control valve having five ports
WO2012129042A1 (en) * 2011-03-18 2012-09-27 Parker-Hannifin Corporation Regeneration circuit

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS62278301A (en) * 1986-05-27 1987-12-03 Yutani Heavy Ind Ltd Variably regenerating circuit

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS62278301A (en) * 1986-05-27 1987-12-03 Yutani Heavy Ind Ltd Variably regenerating circuit

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH0234887U (en) * 1988-08-30 1990-03-06
WO1994013959A1 (en) * 1992-12-04 1994-06-23 Hitachi Construction Machinery Co., Ltd. Hydraulic regenerator
JP3139769B2 (en) * 1992-12-04 2001-03-05 日立建機株式会社 Hydraulic regeneration device
WO2011009527A1 (en) * 2009-07-21 2011-01-27 Parker Hannifin Gmbh Hydraulic circuit arrangement for controlling a double-acting working cylinder by means of a control valve having five ports
WO2012129042A1 (en) * 2011-03-18 2012-09-27 Parker-Hannifin Corporation Regeneration circuit

Also Published As

Publication number Publication date
JP2520760Y2 (en) 1996-12-18

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