JPS61133102U - - Google Patents

Info

Publication number
JPS61133102U
JPS61133102U JP1531685U JP1531685U JPS61133102U JP S61133102 U JPS61133102 U JP S61133102U JP 1531685 U JP1531685 U JP 1531685U JP 1531685 U JP1531685 U JP 1531685U JP S61133102 U JPS61133102 U JP S61133102U
Authority
JP
Japan
Prior art keywords
circuit
hydraulic
switching valve
merging
load sensing
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
JP1531685U
Other languages
Japanese (ja)
Other versions
JPH0416002Y2 (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 JP1985015316U priority Critical patent/JPH0416002Y2/ja
Publication of JPS61133102U publication Critical patent/JPS61133102U/ja
Application granted granted Critical
Publication of JPH0416002Y2 publication Critical patent/JPH0416002Y2/ja
Expired legal-status Critical Current

Links

Landscapes

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

Description

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

第１図は従来例の線図、第２図は本考案の実施
例の線図である。 １，２…油圧回路、３，４…油圧ポンプ、５，
６…吐出回路、７，８，９，１０，１１，１２…
切換弁、１３，１４，１５，１６，１７，１８…
アクチユエータ、１９，２０…吐出量制御装置、
２３，２４…ロードセンシング回路、２７…ハイ
ドロ切換弁、２８…合流回路、２９…パイロツト
切換弁、３０…第１フイードバツク回路、３１…
第２フイードバツク回路、３２…パイロツト回路
。 FIG. 1 is a diagram of a conventional example, and FIG. 2 is a diagram of an embodiment of the present invention. 1, 2...Hydraulic circuit, 3, 4...Hydraulic pump, 5,
6...Discharge circuit, 7, 8, 9, 10, 11, 12...
Switching valve, 13, 14, 15, 16, 17, 18...
Actuator, 19, 20...discharge amount control device,
23, 24... Load sensing circuit, 27... Hydro switching valve, 28... Merging circuit, 29... Pilot switching valve, 30... First feedback circuit, 31...
Second feedback circuit, 32...pilot circuit.

Claims (1)

【実用新案登録請求の範囲】[Scope of utility model registration request] 油圧ポンプの吐出回路をロードセンシングポー
トを備えた切換弁を介してアクチユエータに接続
し、該ロードセンシングポートに得られる圧力を
ロードセンシング回路を介して該油圧ポンプの吐
出量制御装置に導くようにした油圧回路を２組設
けるようにしたものに於いて、一方の油圧回路の
アクチユエータにハイドロ切換弁を介して他方の
油圧回路の吐出回路から分岐した合流回路を接続
し、該一方の油圧回路の切換弁にそのストローク
で作動するパイロツト切換弁を連設し、該ハイド
ロ切換弁に該パイロツト切換弁の作動により合流
回路の圧力を導くパイロツト回路と、該他方の油
圧回路のロードセンシング回路の圧力を導く第１
フイードバツク回路とを接続し、該合流回路の圧
力の優勢で該ハイドロ切換弁に該合流回路を開成
すべく作動させ、該ハイドロ切換弁の後方の合流
回路の圧力をロードセンシング回路に導く第２フ
イードバツク回路を設けて成る合流用油圧回路装
置。 The discharge circuit of the hydraulic pump is connected to the actuator via a switching valve equipped with a load sensing port, and the pressure obtained at the load sensing port is guided to the discharge amount control device of the hydraulic pump via the load sensing circuit. When two sets of hydraulic circuits are provided, a merging circuit branched from the discharge circuit of the other hydraulic circuit is connected to the actuator of one hydraulic circuit via a hydro switching valve, and the switching of the one hydraulic circuit is performed. A pilot switching valve that operates according to the stroke is connected to the valve, and a pilot circuit that guides the pressure of the merging circuit and a pressure of the load sensing circuit of the other hydraulic circuit are guided to the hydraulic switching valve by the operation of the pilot switching valve. 1st
a second feedback circuit connected to the feedback circuit, actuating the hydro switching valve to open the merging circuit based on the preponderance of the pressure in the merging circuit, and guiding the pressure in the merging circuit behind the hydro switching valve to the load sensing circuit; A merging hydraulic circuit device comprising a circuit.
JP1985015316U 1985-02-07 1985-02-07 Expired JPH0416002Y2 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP1985015316U JPH0416002Y2 (en) 1985-02-07 1985-02-07

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP1985015316U JPH0416002Y2 (en) 1985-02-07 1985-02-07

Publications (2)

Publication Number Publication Date
JPS61133102U true JPS61133102U (en) 1986-08-20
JPH0416002Y2 JPH0416002Y2 (en) 1992-04-10

Family

ID=30501050

Family Applications (1)

Application Number Title Priority Date Filing Date
JP1985015316U Expired JPH0416002Y2 (en) 1985-02-07 1985-02-07

Country Status (1)

Country Link
JP (1) JPH0416002Y2 (en)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH02144419A (en) * 1988-11-28 1990-06-04 Hitachi Constr Mach Co Ltd Hydraulic driving gear for civil engineering and construction equipment
WO1998004838A1 (en) * 1996-07-26 1998-02-05 Komatsu Ltd. Hydraulic oil supply apparatus
JP2015143538A (en) * 2014-01-31 2015-08-06 カヤバ工業株式会社 Work machine control system

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS57243A (en) * 1980-05-29 1982-01-05 Yutani Juko Kk Independent circuit for slewing of oil-pressure shovel
JPS59194105A (en) * 1983-04-20 1984-11-02 Daikin Ind Ltd Two-flow conflux circuit

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS57243A (en) * 1980-05-29 1982-01-05 Yutani Juko Kk Independent circuit for slewing of oil-pressure shovel
JPS59194105A (en) * 1983-04-20 1984-11-02 Daikin Ind Ltd Two-flow conflux circuit

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH02144419A (en) * 1988-11-28 1990-06-04 Hitachi Constr Mach Co Ltd Hydraulic driving gear for civil engineering and construction equipment
WO1998004838A1 (en) * 1996-07-26 1998-02-05 Komatsu Ltd. Hydraulic oil supply apparatus
JP2015143538A (en) * 2014-01-31 2015-08-06 カヤバ工業株式会社 Work machine control system
WO2015115430A1 (en) * 2014-01-31 2015-08-06 カヤバ工業株式会社 Control system for work machine

Also Published As

Publication number Publication date
JPH0416002Y2 (en) 1992-04-10

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