JPH01114990U - - Google Patents

Info

Publication number
JPH01114990U
JPH01114990U JP19706087U JP19706087U JPH01114990U JP H01114990 U JPH01114990 U JP H01114990U JP 19706087 U JP19706087 U JP 19706087U JP 19706087 U JP19706087 U JP 19706087U JP H01114990 U JPH01114990 U JP H01114990U
Authority
JP
Japan
Prior art keywords
pressure
regulator
piston
tilting angle
driving
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
Application number
JP19706087U
Other languages
Japanese (ja)
Other versions
JP2504470Y2 (en
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed filed Critical
Priority to JP1987197060U priority Critical patent/JP2504470Y2/en
Publication of JPH01114990U publication Critical patent/JPH01114990U/ja
Application granted granted Critical
Publication of JP2504470Y2 publication Critical patent/JP2504470Y2/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

Links

Description

【図面の簡単な説明】[Brief explanation of the drawing]

第１図は本考案の実施例を示すポンプ制御装置
の構造図、第２図は同じく回路図、第３図は差圧
フイードバツク弁の差圧と傾転角との関係を示す
グラフ、第４図はポンプの流量と吐出圧との関係
を示すグラフである。また、第５図は従来例を示
すポンプ制御装置の構造図、第６図は同じく回路
図である。 １……ポンプ、２……斜板、６……レギユレー
タピストン、７……サーボレギユレータ、１６…
…差圧フイードバツク弁、９……メインスプール
。 Fig. 1 is a structural diagram of a pump control device showing an embodiment of the present invention, Fig. 2 is a circuit diagram thereof, Fig. 3 is a graph showing the relationship between differential pressure and tilt angle of a differential pressure feedback valve, and Fig. 4 The figure is a graph showing the relationship between pump flow rate and discharge pressure. Further, FIG. 5 is a structural diagram of a pump control device showing a conventional example, and FIG. 6 is a circuit diagram of the same. 1... Pump, 2... Swash plate, 6... Regulator piston, 7... Servo regulator, 16...
...Differential pressure feedback valve, 9...Main spool.

Claims (1)

【実用新案登録請求の範囲】[Scope of utility model registration request] ピストンポンプの傾転角を変化させるレギユレ
ータピストンと、レギユレータピストンの駆動圧
力を制御するサーボレギユレータと、変化した傾
転角に応じて前記駆動圧力をフイードバツク制御
するようにサーボレギユレータを駆動するフイー
ドバツク手段とを備えたピストンポンプの制御装
置において、フイードバツク手段として傾転角に
応じてポンプ吐出圧に対する２次圧力を発生させ
る減圧弁を設けるとともに、サーボレギユレータ
にこの２次圧力に応動して前記駆動圧力を調整す
る制御機構を備えたことを特徴とするピストンポ
ンプの制御装置。 A regulator piston that changes the tilting angle of the piston pump, a servo regulator that controls the driving pressure of the regulator piston, and a servo regulator that controls the driving pressure in feedback according to the changed tilting angle. In a control device for a piston pump equipped with a feedback means for driving a servo regulator, a pressure reducing valve is provided as the feedback means to generate a secondary pressure with respect to the pump discharge pressure according to a tilting angle, and the servo regulator is provided with a pressure reducing valve that generates a secondary pressure with respect to the pump discharge pressure. A control device for a piston pump, comprising: a control mechanism that adjusts the drive pressure in response to the next pressure.
JP1987197060U 1987-12-25 1987-12-25 Piston pump controller Expired - Lifetime JP2504470Y2 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP1987197060U JP2504470Y2 (en) 1987-12-25 1987-12-25 Piston pump controller

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP1987197060U JP2504470Y2 (en) 1987-12-25 1987-12-25 Piston pump controller

Publications (2)

Publication Number Publication Date
JPH01114990U true JPH01114990U (en) 1989-08-02
JP2504470Y2 JP2504470Y2 (en) 1996-07-10

Family

ID=31487636

Family Applications (1)

Application Number Title Priority Date Filing Date
JP1987197060U Expired - Lifetime JP2504470Y2 (en) 1987-12-25 1987-12-25 Piston pump controller

Country Status (1)

Country Link
JP (1) JP2504470Y2 (en)

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH03107579A (en) * 1989-09-22 1991-05-07 Komatsu Ltd Capacity control device for swash plate type pump
JP2020051380A (en) * 2018-09-28 2020-04-02 Ｋｙｂ株式会社 Hydraulic rotary machine
CN111336080A (en) * 2018-12-19 2020-06-26 株式会社斗山 Hydraulic pump assembly
CN115667715A (en) * 2020-05-26 2023-01-31 Ｋｙｂ株式会社 Hydraulic rotary machine
WO2023085258A1 (en) * 2021-11-12 2023-05-19 Ｋｙｂ株式会社 Hydraulic rotary machine

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS55114894A (en) * 1979-02-21 1980-09-04 Gen Signal Corp Fluid power controller

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS55114894A (en) * 1979-02-21 1980-09-04 Gen Signal Corp Fluid power controller

Cited By (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH03107579A (en) * 1989-09-22 1991-05-07 Komatsu Ltd Capacity control device for swash plate type pump
JP2020051380A (en) * 2018-09-28 2020-04-02 Ｋｙｂ株式会社 Hydraulic rotary machine
WO2020066526A1 (en) * 2018-09-28 2020-04-02 Ｋｙｂ株式会社 Hydraulic rotary machine
CN111336080A (en) * 2018-12-19 2020-06-26 株式会社斗山 Hydraulic pump assembly
CN115667715A (en) * 2020-05-26 2023-01-31 Ｋｙｂ株式会社 Hydraulic rotary machine
CN115667715B (en) * 2020-05-26 2023-07-25 Ｋｙｂ株式会社 Hydraulic rotary machine
WO2023085258A1 (en) * 2021-11-12 2023-05-19 Ｋｙｂ株式会社 Hydraulic rotary machine
JP2023072381A (en) * 2021-11-12 2023-05-24 Ｋｙｂ株式会社 hydraulic rotary machine

Also Published As

Publication number Publication date
JP2504470Y2 (en) 1996-07-10

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