JPH0258101U - - Google Patents
Info
- Publication number
- JPH0258101U JPH0258101U JP13676288U JP13676288U JPH0258101U JP H0258101 U JPH0258101 U JP H0258101U JP 13676288 U JP13676288 U JP 13676288U JP 13676288 U JP13676288 U JP 13676288U JP H0258101 U JPH0258101 U JP H0258101U
- Authority
- JP
- Japan
- Prior art keywords
- pressure
- spool
- circuit
- self
- regulator
- 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 3
- 238000010586 diagram Methods 0.000 description 5
Landscapes
- Supply Devices, Intensifiers, Converters, And Telemotors (AREA)
Description
第１図は従来例の線図、第２図は第１図示の場
合の作動状態の線図、第３図は他の従来例の線図
、第４図は本考案の実施例の線図、第５図は第４
図示の装置の作動状態を示す線図、第６図は第４
図のスプールと制御ピストンの受圧面積の関係を
示す断面図である。
１……圧力回路、２……アキユームレータ、３
……可変容量ポンプ、４……充填回路、５……逆
止弁、６……制御シリンダ、７……制御ばね、８
……レギユレータ、９……導入回路、１１……排
出回路、１２……復帰ばね、１３……スプール、
１４……オリフイス、１５……制御ピストン、１
６……パイロツト回路。
Fig. 1 is a diagram of the conventional example, Fig. 2 is a diagram of the operating state in the case shown in Fig. 1, Fig. 3 is a diagram of another conventional example, and Fig. 4 is a diagram of the embodiment of the present invention. , Figure 5 is the fourth
A diagram showing the operating state of the illustrated device, FIG.
FIG. 3 is a cross-sectional view showing the relationship between the pressure receiving area of the spool and the control piston shown in the figure. 1...Pressure circuit, 2...Accumulator, 3
...Variable capacity pump, 4...Filling circuit, 5...Check valve, 6...Control cylinder, 7...Control spring, 8
... Regulator, 9 ... Inlet circuit, 11 ... Discharge circuit, 12 ... Return spring, 13 ... Spool,
14... Orifice, 15... Control piston, 1
6...Pilot circuit.
Claims (1)
ームレータを設け、該アキユームレータに、制御
シリンダと制御ばねによりポンプ容量が制御され
た可変容量ポンプを逆止弁を介して接続し、復帰
ばねに対抗して作用する該ポンプの自己吐出圧に
より作動して該制御シリンダへの該自己吐出圧の
導入と排出を制御するスプールを備えたレギユレ
ータを設けるようにしたものに於て、該レギユレ
ータへ該ポンプの自己吐出圧を導く導入回路にオ
リフイスを設け、該レギユレータのスプールの復
帰ばねと対向する端部に、該スプールの受圧面積
よりも大きい受圧面積を有する制御ピストンを摺
動自在に連設し、該制御ピストンの該スプールに
面した端面に導入回路を介してレギユレータに導
入された圧力を作用させ、該端面と反対側の端面
に前記圧力回路の圧力を作用させたことを特徴と
する可変容量ポンプによるアキユームレータ充填
装置。 An accumulator is provided in the pressure circuit connected to the actuator, and a variable displacement pump whose pump displacement is controlled by a control cylinder and a control spring is connected to the accumulator via a check valve to counteract the return spring. A regulator is provided with a spool that is actuated by the self-discharge pressure of the pump and controls the introduction and discharge of the self-discharge pressure to the control cylinder. An orifice is provided in the introduction circuit for guiding the self-discharge pressure, and a control piston having a pressure-receiving area larger than the pressure-receiving area of the spool is slidably connected to the end of the spool of the regulator opposite to the return spring. A variable displacement pump characterized in that the pressure introduced into the regulator via the introduction circuit is applied to the end face of the control piston facing the spool, and the pressure of the pressure circuit is applied to the end face opposite to the end face. Accumulator filling equipment by.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP13676288U JPH0453441Y2 (en) | 1988-10-21 | 1988-10-21 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP13676288U JPH0453441Y2 (en) | 1988-10-21 | 1988-10-21 |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH0258101U true JPH0258101U (en) | 1990-04-26 |
| JPH0453441Y2 JPH0453441Y2 (en) | 1992-12-16 |
Family
ID=31397572
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP13676288U Expired JPH0453441Y2 (en) | 1988-10-21 | 1988-10-21 |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0453441Y2 (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2018179070A1 (en) * | 2017-03-27 | 2018-10-04 | 日立建機株式会社 | Hydraulic control system for working machine |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP6285854B2 (en) * | 2014-12-18 | 2018-02-28 | 日立建機株式会社 | Work vehicle |
-
1988
- 1988-10-21 JP JP13676288U patent/JPH0453441Y2/ja not_active Expired
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2018179070A1 (en) * | 2017-03-27 | 2018-10-04 | 日立建機株式会社 | Hydraulic control system for working machine |
| US10794044B2 (en) | 2017-03-27 | 2020-10-06 | Hitachi Construction Machinery Co., Ltd. | Work machine hydraulic control system |
Also Published As
| Publication number | Publication date |
|---|---|
| JPH0453441Y2 (en) | 1992-12-16 |
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