JPH0162170U - - Google Patents

Info

Publication number
JPH0162170U
JPH0162170U JP15838387U JP15838387U JPH0162170U JP H0162170 U JPH0162170 U JP H0162170U JP 15838387 U JP15838387 U JP 15838387U JP 15838387 U JP15838387 U JP 15838387U JP H0162170 U JPH0162170 U JP H0162170U
Authority
JP
Japan
Prior art keywords
circuit
hydraulic pump
steering
work equipment
valve
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
JP15838387U
Other languages
Japanese (ja)
Other versions
JPH06301Y2 (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 JP15838387U priority Critical patent/JPH06301Y2/en
Publication of JPH0162170U publication Critical patent/JPH0162170U/ja
Application granted granted Critical
Publication of JPH06301Y2 publication Critical patent/JPH06301Y2/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

Links

Landscapes

  • Jib Cranes (AREA)
  • Forklifts And Lifting Vehicles (AREA)
  • Operation Control Of Excavators (AREA)
  • Control And Safety Of Cranes (AREA)

Description

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

図は本考案の実施例を示す油圧回路図である。 １……ステアリング用油圧ポンプ、２……作業
機用油圧ポンプ、３……エンジン、４……減速機
、７……動力取出し装置（ＰＴＯ）、８……ステ
アリング用入力回路、９……ステアリング用バル
ブ、１０……ステアリングシリンダ（ステアリン
グ装置）、１５……第１切替弁、１６……作業機
用入力回路、１７……作業機用バルブ、１８……
戻り油回路、１９……バイパス回路、２０……第
２切替弁、２１……合流回路、２４……スイツチ
、２６……リレー、２７……回転数検出器。 The figure is a hydraulic circuit diagram showing an embodiment of the present invention. 1... Hydraulic pump for steering, 2... Hydraulic pump for work equipment, 3... Engine, 4... Reduction gear, 7... Power take-off device (PTO), 8... Steering input circuit, 9... Steering valve, 10... Steering cylinder (steering device), 15... First switching valve, 16... Input circuit for work machine, 17... Valve for work machine, 18...
Return oil circuit, 19... bypass circuit, 20... second switching valve, 21... merging circuit, 24... switch, 26... relay, 27... rotation speed detector.

Claims (1)

【実用新案登録請求の範囲】[Scope of utility model registration request] ステアリング用油圧ポンプの吐出油をステアリ
ング用バルブを介してステアリング装置に供給す
るステアリング回路と、作業機用油圧ポンプの吐
出油を作業機用バルブを介して作業機に供給する
作業機回路と、上記各油圧ポンプを駆動するエン
ジンと、作業機用油圧ポンプの吐出油を作業モー
ドの時に作業機用バルブの入力回路に導く状態と
、走行モードの時にバイパス回路に導く状態とに
切替える第１切替弁と、エンジンの回転数が低い
時にバイパス回路をステアリング用油圧ポンプへ
の合流回路に連通させる状態と、エンジンが所定
の回転数以上になつた時に上記合流回路をブロツ
クし作業機用油圧ポンプの吐出油をタンクに導く
アンロード状態とに切替える第２切替弁とを具備
していることを特徴とする車両系建設機械の油圧
回路。 a steering circuit that supplies oil discharged from a steering hydraulic pump to the steering device via a steering valve; a work equipment circuit that supplies oil discharged from a hydraulic pump for a work equipment to the work equipment via a work equipment valve; An engine that drives each hydraulic pump, and a first switching valve that switches the discharge oil of the working machine hydraulic pump to the input circuit of the working machine valve when in work mode, and to the bypass circuit when in travel mode. When the engine speed is low, the bypass circuit is connected to the merging circuit to the steering hydraulic pump, and when the engine speed exceeds a predetermined speed, the merging circuit is blocked and the work equipment hydraulic pump is discharged. A hydraulic circuit for a vehicle type construction machine, comprising a second switching valve that switches between an unload state and an unload state where oil is introduced into a tank.
JP15838387U 1987-10-15 1987-10-15 Hydraulic circuit for vehicle-based construction machinery Expired - Lifetime JPH06301Y2 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP15838387U JPH06301Y2 (en) 1987-10-15 1987-10-15 Hydraulic circuit for vehicle-based construction machinery

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP15838387U JPH06301Y2 (en) 1987-10-15 1987-10-15 Hydraulic circuit for vehicle-based construction machinery

Publications (2)

Publication Number Publication Date
JPH0162170U true JPH0162170U (en) 1989-04-20
JPH06301Y2 JPH06301Y2 (en) 1994-01-05

Family

ID=31438661

Family Applications (1)

Application Number Title Priority Date Filing Date
JP15838387U Expired - Lifetime JPH06301Y2 (en) 1987-10-15 1987-10-15 Hydraulic circuit for vehicle-based construction machinery

Country Status (1)

Country Link
JP (1) JPH06301Y2 (en)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2006028930A (en) * 2004-07-16 2006-02-02 Sumitomo (Shi) Construction Machinery Manufacturing Co Ltd Pipe arrangement of hydraulic oil tank for construction equipment
JP2006044519A (en) * 2004-08-06 2006-02-16 Tadano Ltd Steering device of working vehicle
JP2017226492A (en) * 2016-06-20 2017-12-28 川崎重工業株式会社 Hydraulic drive system
WO2023195389A1 (en) * 2022-04-08 2023-10-12 興国インテック株式会社 Surface coating layer formation method and method for producing gasket

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2023069621A (en) * 2021-11-08 2023-05-18 川崎重工業株式会社 Hydraulic system of industrial vehicle
JP2023076907A (en) * 2021-11-24 2023-06-05 川崎重工業株式会社 Hydraulic system of industrial vehicle

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2006028930A (en) * 2004-07-16 2006-02-02 Sumitomo (Shi) Construction Machinery Manufacturing Co Ltd Pipe arrangement of hydraulic oil tank for construction equipment
JP4588378B2 (en) * 2004-07-16 2010-12-01 住友建機株式会社 Hydraulic oil tank piping for construction machinery
JP2006044519A (en) * 2004-08-06 2006-02-16 Tadano Ltd Steering device of working vehicle
JP4542849B2 (en) * 2004-08-06 2010-09-15 株式会社タダノ Steering device for work vehicle
JP2017226492A (en) * 2016-06-20 2017-12-28 川崎重工業株式会社 Hydraulic drive system
WO2023195389A1 (en) * 2022-04-08 2023-10-12 興国インテック株式会社 Surface coating layer formation method and method for producing gasket

Also Published As

Publication number Publication date
JPH06301Y2 (en) 1994-01-05

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