JPH0441558U - - Google Patents
Info
- Publication number
- JPH0441558U JPH0441558U JP8311190U JP8311190U JPH0441558U JP H0441558 U JPH0441558 U JP H0441558U JP 8311190 U JP8311190 U JP 8311190U JP 8311190 U JP8311190 U JP 8311190U JP H0441558 U JPH0441558 U JP H0441558U
- Authority
- JP
- Japan
- Prior art keywords
- drain line
- control valve
- travel
- spool
- 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.)
- Pending
Links
- 238000010586 diagram Methods 0.000 description 1
Landscapes
- Operation Control Of Excavators (AREA)
Description
第１図は本考案に係る油圧回路。第２図は本考
案の別の実施例。第３図は公知油圧回路である。
図において；１……左走行モータ、２……右走
行モータ、３……センタージヨイント、４……（
コントロールバルブ内の）スプール、５……（コ
ントロールバルブ内の）スプール、６……（コン
トロールバルブ内の）左走行用スプール、７……
（コントロールバルブ内の）右走行用スプール、
８……左ポンプ、９……右ポンプ、１０……タン
ク、１１……左側走行モータライン、１２……右
側走行モータライン、１３，１４……可変絞り、
１５，１６……ドレンライン、１７……絞り弁ブ
ロツク。
Figure 1 shows a hydraulic circuit according to the present invention. FIG. 2 shows another embodiment of the present invention. FIG. 3 shows a known hydraulic circuit. In the diagram: 1...Left travel motor, 2...Right travel motor, 3...Center joint, 4...(
Spool (in the control valve), 5... Spool (in the control valve), 6... Spool for left travel (in the control valve), 7...
Right-hand drive spool (inside the control valve)
8... Left pump, 9... Right pump, 10... Tank, 11... Left running motor line, 12... Right running motor line, 13, 14... Variable throttle,
15, 16... Drain line, 17... Throttle valve block.
Claims (1)
用スプール６又は７との間にタンク１０へのドレ
ンライン１５又は１６を設け、該ドレンライン内
に可変絞り１３又は１４を設けて走行モータ１又
は２への供給油の流量を調節可能にした油圧シヨ
ベルの油圧駆動回路。 A drain line 15 or 16 to the tank 10 is provided between the pump 8 or 9 and the travel spool 6 or 7 in the control valve, and a variable throttle 13 or 14 is provided in the drain line to the travel motor 1 or 2. A hydraulic drive circuit for a hydraulic excavator that allows the flow rate of oil supplied to be adjusted.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP8311190U JPH0441558U (en) | 1990-08-07 | 1990-08-07 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP8311190U JPH0441558U (en) | 1990-08-07 | 1990-08-07 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH0441558U true JPH0441558U (en) | 1992-04-08 |
Family
ID=31630506
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP8311190U Pending JPH0441558U (en) | 1990-08-07 | 1990-08-07 |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0441558U (en) |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS62150517A (en) * | 1985-12-25 | 1987-07-04 | Hitachi Ltd | magnetic recording medium |
-
1990
- 1990-08-07 JP JP8311190U patent/JPH0441558U/ja active Pending
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS62150517A (en) * | 1985-12-25 | 1987-07-04 | Hitachi Ltd | magnetic recording medium |
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