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
Links
- 238000009412 basement excavation Methods 0.000 claims description 5
- 238000010276 construction Methods 0.000 claims description 2
- 238000010586 diagram Methods 0.000 description 2
Landscapes
- Operation Control Of Excavators (AREA)
Description
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)
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.
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)
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 |
-
1988
- 1988-09-29 JP JP12765088U patent/JPH0250454U/ja active Pending
Cited By (1)
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 |
Similar Documents
Publication | Publication Date | Title |
---|---|---|
JPH0250454U (en) | ||
JPS59160661U (en) | Front loader hydraulic control device | |
JPH0389201U (en) | ||
JPS60191584U (en) | Power-tilt hydraulic circuit | |
JPS5967602U (en) | hydraulic circuit | |
JPS5980555U (en) | Bucket vibration drive device for excavation work vehicle | |
JPS58109605U (en) | Work equipment hydraulic circuit | |
JPS6029901U (en) | hydraulic circuit | |
JPS5877157U (en) | Concrete pump operation control device | |
JPS59102648U (en) | Front loader control device | |
KR970040987A (en) | Power steering retarder when engine is off | |
JPS6132589U (en) | Engine control device for machines equipped with variable displacement hydraulic pumps | |
JPH0221179U (en) | ||
JPS58174352U (en) | work machine | |
JPS6058661U (en) | Hydraulic circuit device for hydraulic construction machinery | |
JPH0192501U (en) | ||
JPS5814636U (en) | hydraulic operating device | |
JPH02113057U (en) | ||
JPS5894341U (en) | work machine | |
JPS5890845U (en) | work machine | |
JPS5850166U (en) | Flow rate control device in actuator oil supply system | |
JPS5969252U (en) | Multi-joint mechanism hydraulic control device | |
JPS5932570U (en) | power steering device | |
JPS5881383U (en) | Hydraulic motor reduction device | |
JPS616556U (en) | Hydraulic excavator hydraulic circuit |