JPH0240943U - - Google Patents

Info

Publication number
JPH0240943U
JPH0240943U JP12109888U JP12109888U JPH0240943U JP H0240943 U JPH0240943 U JP H0240943U JP 12109888 U JP12109888 U JP 12109888U JP 12109888 U JP12109888 U JP 12109888U JP H0240943 U JPH0240943 U JP H0240943U
Authority
JP
Japan
Prior art keywords
switch
control device
engine
controller
variable pump
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
JP12109888U
Other languages
Japanese (ja)
Other versions
JP2520462Y2 (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 JP1988121098U priority Critical patent/JP2520462Y2/en
Publication of JPH0240943U publication Critical patent/JPH0240943U/ja
Application granted granted Critical
Publication of JP2520462Y2 publication Critical patent/JP2520462Y2/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

Links

Landscapes

  • Fluid-Pressure Circuits (AREA)
  • Operation Control Of Excavators (AREA)
  • Component Parts Of Construction Machinery (AREA)
  • Control Of Vehicle Engines Or Engines For Specific Uses (AREA)

Description

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

第１図はこの考案にかかる操作制御装置を示す
ブロツク図、第２図はサーボ機構をそなえた可変
ポンプ周辺の要部回路図、第３図は可変ポンプの
ポンプ馬力制御曲線図、第４図はＨ，Ｓ，ＦＣモ
ード時におけるエンジンの性能曲線図である。 １，１８…サーボ機構、２，１７…可変ポンプ
、３，４，１９…油圧シリンダ、２１…エンジン
、２２…ガバナ制御装置、２３…回転センサ、２
４…作業モード切換スイツチ、２５…運転時用操
作スイツチ、２６…コントローラ。 Fig. 1 is a block diagram showing the operation control device according to this invention, Fig. 2 is a circuit diagram of the main parts around the variable pump equipped with a servo mechanism, Fig. 3 is a diagram of the pump horsepower control curve of the variable pump, and Fig. 4 is a performance curve diagram of the engine in H, S, and FC modes. DESCRIPTION OF SYMBOLS 1, 18... Servo mechanism, 2, 17... Variable pump, 3, 4, 19... Hydraulic cylinder, 21... Engine, 22... Governor control device, 23... Rotation sensor, 2
4...Work mode changeover switch, 25...Operation switch for operation, 26...Controller.

Claims (1)

【実用新案登録請求の範囲】[Scope of utility model registration request] 作業モード切換スイツチの切換操作により可変
ポンプの最大吐出量を複数の段階に切換可能とし
、それとともにエンジン回転数を低減して微小速
度操作を可能とした建設機械において、上記作業
モード切換スイツチからの切換操作信号をコント
ローラを介して可変ポンプのサーボ機構、および
エンジンのガバナ制御装置に出力可能とし、一方
、建設機械の運転席付近に運転時用操作スイツチ
を設け、作業モード切換スイツチを微小速度操作
位置に切換えた作業時に上記運転時用操作スイツ
チの操作により、コントローラを介してエンジン
回転数を上昇可能に構成したことを特徴とする建
設機械の操作制御装置。 In construction machinery, the maximum discharge amount of a variable pump can be changed to multiple stages by switching the work mode changeover switch, and at the same time, the engine speed can be reduced to enable minute speed operation. A switching operation signal can be output to the variable pump servo mechanism and the engine governor control device via the controller, while an operation switch for operation is provided near the driver's seat of the construction machine, and the work mode selection switch can be operated at minute speeds. 1. An operation control device for construction machinery, characterized in that the engine rotation speed can be increased via a controller by operating the operation operation switch during operation when the operation switch is switched to the above position.
JP1988121098U 1988-09-14 1988-09-14 Operation control device for construction machinery Expired - Lifetime JP2520462Y2 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP1988121098U JP2520462Y2 (en) 1988-09-14 1988-09-14 Operation control device for construction machinery

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP1988121098U JP2520462Y2 (en) 1988-09-14 1988-09-14 Operation control device for construction machinery

Publications (2)

Publication Number Publication Date
JPH0240943U true JPH0240943U (en) 1990-03-20
JP2520462Y2 JP2520462Y2 (en) 1996-12-18

Family

ID=31367798

Family Applications (1)

Application Number Title Priority Date Filing Date
JP1988121098U Expired - Lifetime JP2520462Y2 (en) 1988-09-14 1988-09-14 Operation control device for construction machinery

Country Status (1)

Country Link
JP (1) JP2520462Y2 (en)

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS6294622A (en) * 1985-10-22 1987-05-01 Komatsu Ltd Construction machinery control device

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS6294622A (en) * 1985-10-22 1987-05-01 Komatsu Ltd Construction machinery control device

Also Published As

Publication number Publication date
JP2520462Y2 (en) 1996-12-18

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