JPS63166754U - - Google Patents
Info
- Publication number
- JPS63166754U JPS63166754U JP1987059735U JP5973587U JPS63166754U JP S63166754 U JPS63166754 U JP S63166754U JP 1987059735 U JP1987059735 U JP 1987059735U JP 5973587 U JP5973587 U JP 5973587U JP S63166754 U JPS63166754 U JP S63166754U
- Authority
- JP
- Japan
- Prior art keywords
- regulator
- oil chamber
- pump
- control circuit
- relief 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.)
- Granted
Links
- 238000006073 displacement reaction Methods 0.000 claims description 3
- 239000003921 oil Substances 0.000 claims 3
- 239000010720 hydraulic oil Substances 0.000 claims 2
- 230000006835 compression Effects 0.000 claims 1
- 238000007906 compression Methods 0.000 claims 1
- 230000001105 regulatory effect Effects 0.000 claims 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims 1
- 238000010586 diagram Methods 0.000 description 2
Landscapes
- Control Of Fluid Gearings (AREA)
Description
第１図は本考案の実施例を示す容量可変ポンプ
の制御回路図、第２図はリリーフ弁と遮断弁の構
成を示すチヤージポンプの断面図、第３図はリリ
ーフ弁と遮断弁について別の構成を示したチヤー
ジポンプの断面図である。また、第４図は従来例
を示す容量可変ポンプの制御回路図である。
１…容量可変ポンプ、３…レギユレータシリン
ダ、３Ａ…ピストン、４，５…油室、６…チヤー
ジポンプ、９…タンク、２０…リリーフ弁、２１
…遮断弁、２２…迂回通路、２５…固定オリフイ
ス、３５…パイロツト回路。
Fig. 1 is a control circuit diagram of a variable capacity pump showing an embodiment of the present invention, Fig. 2 is a sectional view of a charge pump showing the configuration of a relief valve and a cutoff valve, and Fig. 3 is a different configuration of the relief valve and cutoff valve. FIG. 3 is a cross-sectional view of the charge pump showing. Further, FIG. 4 is a control circuit diagram of a conventional variable displacement pump. 1... Variable capacity pump, 3... Regulator cylinder, 3A... Piston, 4, 5... Oil chamber, 6... Charge pump, 9... Tank, 20... Relief valve, 21
...Shutoff valve, 22...Detour passage, 25...Fixed orifice, 35...Pilot circuit.
Claims (1)
を収装したレギユレータシリンダと、このレギユ
レータシリンダの油室に切換弁を介して作動油を
供給するチヤージポンプと、チヤージポンプから
の吐出作動油をタンクに還流する通路に介装した
リリーフ弁とを備えた容量可変ポンプのレギユレ
ータ制御回路において、レギユレータシリンダの
圧縮側の油室と伸張側の油室の圧力とをパイロツ
ト圧としてこれらの圧力差が一定以上になつた時
に作動する切換手段と、この切換手段を介して前
記リリーフ弁のリリーフ圧を高める調圧手段とを
設けたことを特徴とする容量可変ポンプのレギユ
レータ制御回路。 A regulator cylinder that houses a piston that changes the tilt angle of the variable displacement pump, a charge pump that supplies hydraulic oil to the oil chamber of the regulator cylinder via a switching valve, and a hydraulic oil discharged from the charge pump. In a regulator control circuit for a variable capacity pump equipped with a relief valve installed in a passage that returns water to a tank, the pressures in the oil chamber on the compression side and the oil chamber on the expansion side of the regulator cylinder are used as pilot pressures. A regulator control circuit for a variable displacement pump, comprising a switching means that operates when the difference exceeds a certain level, and a pressure regulating means that increases the relief pressure of the relief valve via the switching means.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1987059735U JPH0613414Y2 (en) | 1987-04-20 | 1987-04-20 | Regulator-controlled circuit for variable displacement pump |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1987059735U JPH0613414Y2 (en) | 1987-04-20 | 1987-04-20 | Regulator-controlled circuit for variable displacement pump |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS63166754U true JPS63166754U (en) | 1988-10-31 |
| JPH0613414Y2 JPH0613414Y2 (en) | 1994-04-06 |
Family
ID=30891506
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP1987059735U Expired - Lifetime JPH0613414Y2 (en) | 1987-04-20 | 1987-04-20 | Regulator-controlled circuit for variable displacement pump |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0613414Y2 (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2002181190A (en) * | 2000-12-19 | 2002-06-26 | Kanzaki Kokyukoki Mfg Co Ltd | Pressure oil supply device for working vehicle with hst |
-
1987
- 1987-04-20 JP JP1987059735U patent/JPH0613414Y2/en not_active Expired - Lifetime
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2002181190A (en) * | 2000-12-19 | 2002-06-26 | Kanzaki Kokyukoki Mfg Co Ltd | Pressure oil supply device for working vehicle with hst |
| JP4591876B2 (en) * | 2000-12-19 | 2010-12-01 | 株式会社 神崎高級工機製作所 | Pressure oil supply device for work vehicle with HST |
Also Published As
| Publication number | Publication date |
|---|---|
| JPH0613414Y2 (en) | 1994-04-06 |