JPH0478306U - - Google Patents
Info
- Publication number
- JPH0478306U JPH0478306U JP12166090U JP12166090U JPH0478306U JP H0478306 U JPH0478306 U JP H0478306U JP 12166090 U JP12166090 U JP 12166090U JP 12166090 U JP12166090 U JP 12166090U JP H0478306 U JPH0478306 U JP H0478306U
- Authority
- JP
- Japan
- Prior art keywords
- pressure difference
- predetermined value
- pilot
- opening
- 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.)
- Pending
Links
- 238000010586 diagram Methods 0.000 description 2
Landscapes
- Operation Control Of Excavators (AREA)
- Fluid-Pressure Circuits (AREA)
Description
第１図は本考案に係る油圧制御装置の回路図、
第２図は従来例の回路図である。
１……パイロツトバルブ、２……操作レバー、
３，４……パイロツトライン、５，６……バイパ
ス回路、７……可変絞り、８……方向切換弁、９
……圧力補償弁、１０……ロードセンシングレギ
ユレータ、１１……主ポンプ、１２……アクチユ
エータ。
FIG. 1 is a circuit diagram of a hydraulic control device according to the present invention,
FIG. 2 is a circuit diagram of a conventional example. 1...Pilot valve, 2...Operation lever,
3, 4... Pilot line, 5, 6... Bypass circuit, 7... Variable throttle, 8... Directional switching valve, 9
... Pressure compensation valve, 10 ... Load sensing regulator, 11 ... Main pump, 12 ... Actuator.
Claims (1)
結ぶパイロツトライン３，４間に、可変絞り７を
挿入したバイパス回路５，６を設け、前記可変絞
り７は、主ポンプ１１の吐出圧と最大負荷圧との
差圧によつて絞り面積を変じ、前記差圧が所定値
より高いときはブロツク、所定値より低くなるに
従い開度を増大するようにしたことを特徴とする
油圧制御装置。 Bypass circuits 5 and 6 are provided between the pilot lines 3 and 4 that connect the pilot valve 1 and both sides of the directional control valve 8, in which a variable throttle 7 is inserted. A hydraulic control device characterized in that the orifice area is changed depending on the pressure difference between the pressure difference and the pressure difference, and when the pressure difference is higher than a predetermined value, the opening is blocked, and as the pressure difference becomes lower than the predetermined value, the opening degree is increased.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP12166090U JPH0478306U (en) | 1990-11-20 | 1990-11-20 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP12166090U JPH0478306U (en) | 1990-11-20 | 1990-11-20 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH0478306U true JPH0478306U (en) | 1992-07-08 |
Family
ID=31869508
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP12166090U Pending JPH0478306U (en) | 1990-11-20 | 1990-11-20 |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0478306U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2022057494A (en) * | 2020-09-30 | 2022-04-11 | 株式会社クボタ | Hydraulic system for work machine |
| JP2022064200A (en) * | 2020-10-13 | 2022-04-25 | 株式会社クボタ | Hydraulic system of work machine |
-
1990
- 1990-11-20 JP JP12166090U patent/JPH0478306U/ja active Pending
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2022057494A (en) * | 2020-09-30 | 2022-04-11 | 株式会社クボタ | Hydraulic system for work machine |
| JP2022064200A (en) * | 2020-10-13 | 2022-04-25 | 株式会社クボタ | Hydraulic system of work machine |