JP4279230B2 - 建設機械の走行油圧回路 - Google Patents
建設機械の走行油圧回路 Download PDFInfo
- Publication number
- JP4279230B2 JP4279230B2 JP2004302379A JP2004302379A JP4279230B2 JP 4279230 B2 JP4279230 B2 JP 4279230B2 JP 2004302379 A JP2004302379 A JP 2004302379A JP 2004302379 A JP2004302379 A JP 2004302379A JP 4279230 B2 JP4279230 B2 JP 4279230B2
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- JP
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- Prior art keywords
- valve
- pilot
- oil passage
- switching
- switching 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.)
- Expired - Fee Related
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- Operation Control Of Excavators (AREA)
- Fluid-Pressure Circuits (AREA)
Description
20 油圧モータ(走行モータ)
20a,20b 両側ポート
21 油圧ポンプ(主ポンプ)
22a,22b 主管路
23 コントロール弁
24 操作レバー
25 リモコン弁
26a,26b パイロット油路
27 シャトル弁
28 切換弁
30 油路
31 パイロットポンプ
32 パイロット油路
33 チェック弁
36 分岐油路
37 開閉弁
Claims (2)
- 油圧ポンプと油圧モータを結ぶ主管路にコントロール弁を介装し、操作レバーの操作により該コントロール弁を切り換えて前記油圧モータに圧油を給排するように構成した建設機械において、
前記主管路に前記操作レバーの操作に連動してノーマル位置とオフセット位置に切り換わる切換弁を設け、該切換弁のノーマル位置では前記主管路を遮断するとともにアキュムレータと前記油圧モータの両側ポートを接続し、該切換弁のオフセット位置では前記主管路を連通するとともにパイロット油路の圧油がチェック弁を介して前記アキュムレータへ供給されるように構成したことを特徴とする建設機械の走行油圧回路。 - 上記切換弁の入口ポートに接続される上記パイロット油路から上記切換弁のパイロットポートに分岐する分岐油路を設けるとともに、前記パイロット油路に開閉弁を介装し、上記操作レバー操作時は該開閉弁をパイロットポンプの圧油供給位置に切り換えて、前記パイロット油路と前記パイロットポンプを連通し、上記操作レバー非操作時は該開閉弁を前記パイロットポンプの圧油遮断位置に切り換えて、前記パイロット油路をタンクへ連通させるように構成した請求項1記載の建設機械の走行油圧回路。
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP2004302379A JP4279230B2 (ja) | 2004-10-18 | 2004-10-18 | 建設機械の走行油圧回路 |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP2004302379A JP4279230B2 (ja) | 2004-10-18 | 2004-10-18 | 建設機械の走行油圧回路 |
Publications (2)
Publication Number | Publication Date |
---|---|
JP2006112575A JP2006112575A (ja) | 2006-04-27 |
JP4279230B2 true JP4279230B2 (ja) | 2009-06-17 |
Family
ID=36381248
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP2004302379A Expired - Fee Related JP4279230B2 (ja) | 2004-10-18 | 2004-10-18 | 建設機械の走行油圧回路 |
Country Status (1)
Country | Link |
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JP (1) | JP4279230B2 (ja) |
Families Citing this family (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2011220390A (ja) * | 2010-04-06 | 2011-11-04 | Kobelco Contstruction Machinery Ltd | 油圧作業機械の制御装置 |
JP6522386B2 (ja) * | 2015-03-26 | 2019-05-29 | 住友重機械工業株式会社 | ショベル |
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2004
- 2004-10-18 JP JP2004302379A patent/JP4279230B2/ja not_active Expired - Fee Related
Also Published As
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JP2006112575A (ja) | 2006-04-27 |
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