JPS62196258U - - Google Patents

Info

Publication number
JPS62196258U
JPS62196258U JP8365486U JP8365486U JPS62196258U JP S62196258 U JPS62196258 U JP S62196258U JP 8365486 U JP8365486 U JP 8365486U JP 8365486 U JP8365486 U JP 8365486U JP S62196258 U JPS62196258 U JP S62196258U
Authority
JP
Japan
Prior art keywords
swing
mechanical brake
circuit
short circuit
hydraulic
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
JP8365486U
Other languages
Japanese (ja)
Other versions
JPH0624445Y2 (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 JP8365486U priority Critical patent/JPH0624445Y2/en
Publication of JPS62196258U publication Critical patent/JPS62196258U/ja
Application granted granted Critical
Publication of JPH0624445Y2 publication Critical patent/JPH0624445Y2/en
Anticipated expiration legal-status Critical
Expired - Lifetime 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図は本考案の油圧シヨベルの旋回油圧回路
図、第２図は従来の油圧シヨベルの旋回油圧油圧
回路図である。 １…メカニカルブレーキ、２…旋回モータ、３
…電磁方向切換弁、４…旋回切換弁、５…油圧ポ
ンプ、６…操作位置検出器、７…作動スイツチ、
８…電源、９…制御器、１０…電磁方向切換弁、
１２…切換スイツチ。 FIG. 1 is a swing hydraulic circuit diagram of a hydraulic shovel of the present invention, and FIG. 2 is a swing hydraulic circuit diagram of a conventional hydraulic excavator. 1...Mechanical brake, 2...Swivel motor, 3
...Electromagnetic directional switching valve, 4...Swivel switching valve, 5...Hydraulic pump, 6...Operation position detector, 7...Operation switch,
8...Power supply, 9...Controller, 10...Solenoid directional control valve,
12... Selector switch.

Claims (1)

【実用新案登録請求の範囲】[Scope of utility model registration request] 旋回切換弁の操作位置が中立であることを検出
して、一定時間後にメカニカルブレーキを作動さ
せる制御器と旋回短絡回路を有する油圧シヨベル
の油圧回路において、前記旋回短絡回路を選択的
に連通又は遮断する作動スイツチと前記メカニカ
ルブレーキのバイパス回路の切換スイツチを連動
させ、前記旋回短絡回路が連通している時は、前
記メカニカルブレーキが解除されるようにしたこ
とを特徴とする油圧シヨベルの旋回油圧回路。 In a hydraulic circuit of a hydraulic excavator having a controller that detects that the operating position of a swing switching valve is neutral and operates a mechanical brake after a certain period of time and a swing short circuit, the swing short circuit is selectively connected or cut off. A swing hydraulic circuit for a hydraulic excavator, characterized in that an operating switch for operating the mechanical brake is linked with a switch for switching the bypass circuit of the mechanical brake, so that when the swing short circuit is in communication, the mechanical brake is released. .
JP8365486U 1986-06-03 1986-06-03 Swing hydraulic circuit of hydraulic shovel Expired - Lifetime JPH0624445Y2 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP8365486U JPH0624445Y2 (en) 1986-06-03 1986-06-03 Swing hydraulic circuit of hydraulic shovel

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP8365486U JPH0624445Y2 (en) 1986-06-03 1986-06-03 Swing hydraulic circuit of hydraulic shovel

Publications (2)

Publication Number Publication Date
JPS62196258U true JPS62196258U (en) 1987-12-14
JPH0624445Y2 JPH0624445Y2 (en) 1994-06-29

Family

ID=30937433

Family Applications (1)

Application Number Title Priority Date Filing Date
JP8365486U Expired - Lifetime JPH0624445Y2 (en) 1986-06-03 1986-06-03 Swing hydraulic circuit of hydraulic shovel

Country Status (1)

Country Link
JP (1) JPH0624445Y2 (en)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS63255429A (en) * 1987-04-09 1988-10-21 Kobe Steel Ltd Controller for slewing parking brake
JPH0284001U (en) * 1988-12-16 1990-06-29
JPH0284002U (en) * 1988-12-16 1990-06-29

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2005054526A (en) * 2003-08-07 2005-03-03 Hitachi Constr Mach Co Ltd Slewing controller for construction machinery

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS63255429A (en) * 1987-04-09 1988-10-21 Kobe Steel Ltd Controller for slewing parking brake
JPH0284001U (en) * 1988-12-16 1990-06-29
JPH0284002U (en) * 1988-12-16 1990-06-29

Also Published As

Publication number Publication date
JPH0624445Y2 (en) 1994-06-29

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