JPH0250454U - - Google Patents

Info

Publication number
JPH0250454U
JPH0250454U JP12765088U JP12765088U JPH0250454U JP H0250454 U JPH0250454 U JP H0250454U JP 12765088 U JP12765088 U JP 12765088U JP 12765088 U JP12765088 U JP 12765088U JP H0250454 U JPH0250454 U JP H0250454U
Authority
JP
Japan
Prior art keywords
excavation force
discharge
electronic control
hydraulic pump
discharge pressure
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.)
Pending
Application number
JP12765088U
Other languages
Japanese (ja)
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 JP12765088U priority Critical patent/JPH0250454U/ja
Publication of JPH0250454U publication Critical patent/JPH0250454U/ja
Pending legal-status Critical Current

Links

Description

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

第１図は本考案になる掘削力増加機能の時間制
限装置のフローチヤート、第２図は油圧ポンプの
吐出圧と吐出量の相関を示す油圧・油量制御曲線
図、第３図は掘削力増加機能を有する建設機械の
油圧回路図である。 Fig. 1 is a flowchart of the time limit device for the excavation force increasing function of the present invention, Fig. 2 is a hydraulic pressure/oil amount control curve diagram showing the correlation between the discharge pressure and discharge amount of the hydraulic pump, and Fig. 3 is the excavation force FIG. 3 is a hydraulic circuit diagram of a construction machine with an increasing function.

Claims (1)

【実用新案登録請求の範囲】[Scope of utility model registration request] 建設機械の作業機を操作する油圧機器の電子制
御装置において、一時的に掘削力を強くするため
に油圧ポンプの吐出量および吐出圧を増大する掘
削力増加スイツチを入りにして一定時間を経過す
ると、スイツチが入りのままであつても前記油圧
ポンプの吐出量および吐出圧を定常状態に復元さ
せるプログラムを、電子制御装置のコントローラ
に付加したことを特徴とする掘削力増加機能の時
間制限装置。 In electronic control devices for hydraulic equipment that operate construction machinery, when a certain period of time has elapsed after turning on the excavation force increase switch that increases the discharge volume and discharge pressure of the hydraulic pump in order to temporarily strengthen the excavation force. A time limiting device for an excavation force increasing function, characterized in that a program for restoring the discharge amount and discharge pressure of the hydraulic pump to a steady state even if the switch remains on is added to the controller of the electronic control device.
JP12765088U 1988-09-29 1988-09-29 Pending JPH0250454U (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP12765088U JPH0250454U (en) 1988-09-29 1988-09-29

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP12765088U JPH0250454U (en) 1988-09-29 1988-09-29

Publications (1)

Publication Number Publication Date
JPH0250454U true JPH0250454U (en) 1990-04-09

Family

ID=31380268

Family Applications (1)

Application Number Title Priority Date Filing Date
JP12765088U Pending JPH0250454U (en) 1988-09-29 1988-09-29

Country Status (1)

Country Link
JP (1) JPH0250454U (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2005290890A (en) * 2004-04-01 2005-10-20 Shin Caterpillar Mitsubishi Ltd Overheating prevention system for working machine

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2005290890A (en) * 2004-04-01 2005-10-20 Shin Caterpillar Mitsubishi Ltd Overheating prevention system for working machine

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