JP5706431B2 - 可変容量型液圧ポンプを制御する方法および装置 - Google Patents
可変容量型液圧ポンプを制御する方法および装置 Download PDFInfo
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- JP5706431B2 JP5706431B2 JP2012533150A JP2012533150A JP5706431B2 JP 5706431 B2 JP5706431 B2 JP 5706431B2 JP 2012533150 A JP2012533150 A JP 2012533150A JP 2012533150 A JP2012533150 A JP 2012533150A JP 5706431 B2 JP5706431 B2 JP 5706431B2
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- JP
- Japan
- Prior art keywords
- hydraulic
- hydraulic actuator
- pressurized fluid
- swash plate
- 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.)
- Expired - Fee Related
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Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04B—POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
- F04B49/00—Control, e.g. of pump delivery, or pump pressure of, or safety measures for, machines, pumps, or pumping installations, not otherwise provided for, or of interest apart from, groups F04B1/00 - F04B47/00
- F04B49/12—Control, e.g. of pump delivery, or pump pressure of, or safety measures for, machines, pumps, or pumping installations, not otherwise provided for, or of interest apart from, groups F04B1/00 - F04B47/00 by varying the length of stroke of the working members
- F04B49/14—Adjusting abutments located in the path of reciprocation
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F15—FLUID-PRESSURE ACTUATORS; HYDRAULICS OR PNEUMATICS IN GENERAL
- F15B—SYSTEMS ACTING BY MEANS OF FLUIDS IN GENERAL; FLUID-PRESSURE ACTUATORS, e.g. SERVOMOTORS; DETAILS OF FLUID-PRESSURE SYSTEMS, NOT OTHERWISE PROVIDED FOR
- F15B11/00—Servomotor systems without provision for follow-up action; Circuits therefor
- F15B11/16—Servomotor systems without provision for follow-up action; Circuits therefor with two or more servomotors
- F15B11/20—Servomotor systems without provision for follow-up action; Circuits therefor with two or more servomotors controlling several interacting or sequentially-operating members
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F15—FLUID-PRESSURE ACTUATORS; HYDRAULICS OR PNEUMATICS IN GENERAL
- F15B—SYSTEMS ACTING BY MEANS OF FLUIDS IN GENERAL; FLUID-PRESSURE ACTUATORS, e.g. SERVOMOTORS; DETAILS OF FLUID-PRESSURE SYSTEMS, NOT OTHERWISE PROVIDED FOR
- F15B13/00—Details of servomotor systems ; Valves for servomotor systems
- F15B13/02—Fluid distribution or supply devices characterised by their adaptation to the control of servomotors
- F15B13/06—Fluid distribution or supply devices characterised by their adaptation to the control of servomotors for use with two or more servomotors
- F15B13/08—Assemblies of units, each for the control of a single servomotor only
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F15—FLUID-PRESSURE ACTUATORS; HYDRAULICS OR PNEUMATICS IN GENERAL
- F15B—SYSTEMS ACTING BY MEANS OF FLUIDS IN GENERAL; FLUID-PRESSURE ACTUATORS, e.g. SERVOMOTORS; DETAILS OF FLUID-PRESSURE SYSTEMS, NOT OTHERWISE PROVIDED FOR
- F15B2211/00—Circuits for servomotor systems
- F15B2211/20—Fluid pressure source, e.g. accumulator or variable axial piston pump
- F15B2211/205—Systems with pumps
- F15B2211/2053—Type of pump
- F15B2211/20546—Type of pump variable capacity
- F15B2211/20553—Type of pump variable capacity with pilot circuit, e.g. for controlling a swash plate
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Fluid Mechanics (AREA)
- Reciprocating Pumps (AREA)
- Fluid-Pressure Circuits (AREA)
- Operation Control Of Excavators (AREA)
Description
上記の制御用ハードウェア30は、例えば、用具14に動力を供給するように構成されたシステム、液圧トランスミッション20、または液圧動力を利用する複合型トランスミッションなどのいくつかの任意の液圧システムで利用することができる。図3を参照すると、ポンプ22の押しのけ容積は、斜板角αを大きくすることで拡張することができる。これは、制御弁42を流れ通過位置の方に向けて駆動し、制御弁40を排出位置の方に向けて駆動することで行うことができる。反対に、ポンプ22の押しのけ容積は、制御弁42を排出位置の方に向けて駆動し、制御弁40を流れ通過位置の方に向けて駆動することで縮小することができる。
Claims (5)
- 軸のまわりで回転可能な斜板(32)を有する可変容量型液圧ポンプと、
軸のまわりで、斜板(32)を第1の方向に回転させるように構成された第1の液圧アクチュエータと、
軸のまわりで、斜板(32)を第1の方向とは反対の第2の方向に回転させるように構成された第2の液圧アクチュエータと、
加圧流体を第1の液圧アクチュエータに送る第1の位置と、第1の液圧アクチュエータを実質上液圧的に孤立させる第2の位置と、加圧流体を第1の液圧アクチュエータからタンク(46)に排出する第3の位置との間で、ソレノイド(48)によって選択的に移動可能であるように構成された第1の流れ制御弁(40、42)と、
加圧流体を第2の液圧アクチュエータに送る第1の位置と、第2の液圧アクチュエータを実質上液圧的に孤立させる第2の位置と、加圧流体を第2の液圧アクチュエータからタンク(46)に排出する第3の位置との間で、ソレノイド(48)によって選択的に移動可能であるように構成された第2の流れ制御弁(40、42)と、
前記第1の液圧アクチュエータ及び前記第2の液圧アクチュエータ内の前記加圧流体の圧力を計測する圧力センサと、
を含み、
前記圧力センサによって前記第1の液圧アクチュエータ及び前記第2の液圧アクチュエータ内の前記加圧流体の圧力が計測され、
計測された前記第1の液圧アクチュエータおよび前記第2の液圧アクチュエータ内の前記加圧流体の圧力に基づいて、安定状態の前記斜板の位置を維持するために、前記ソレノイドの電流が修正される液圧システム。 - 前記可変容量型液圧ポンプはオーバセンタポンプである、請求項1に記載の液圧システム。
- チャージポンプ(28)をさらに含み、前記チャージポンプ(28)は、加圧流体を前記第1の制御弁(40、42)および前記第2の制御弁(40、42)に供給する、請求項1に記載の液圧システム。
- 液圧モータ(24)をさらに含み、前記可変容量型液圧ポンプは、加圧流体を前記液圧モータ(24)に供給する、請求項1に記載の液圧システム。
- 前記液圧モータ(24)は、動力をトラクション装置(18)に供給する、請求項4に記載の液圧システム。
Applications Claiming Priority (3)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US12/573,949 | 2009-10-06 | ||
US12/573,949 US8596057B2 (en) | 2009-10-06 | 2009-10-06 | Method and apparatus for controlling a variable displacement hydraulic pump |
PCT/US2010/045721 WO2011043867A2 (en) | 2009-10-06 | 2010-08-17 | Method and apparatus for controlling a variable displacement hydraulic pump |
Publications (2)
Publication Number | Publication Date |
---|---|
JP2013506796A JP2013506796A (ja) | 2013-02-28 |
JP5706431B2 true JP5706431B2 (ja) | 2015-04-22 |
Family
ID=43822114
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP2012533150A Expired - Fee Related JP5706431B2 (ja) | 2009-10-06 | 2010-08-17 | 可変容量型液圧ポンプを制御する方法および装置 |
Country Status (5)
Country | Link |
---|---|
US (1) | US8596057B2 (ja) |
JP (1) | JP5706431B2 (ja) |
CN (1) | CN102575694B (ja) |
DE (1) | DE112010003962T5 (ja) |
WO (1) | WO2011043867A2 (ja) |
Families Citing this family (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US8647075B2 (en) * | 2009-03-18 | 2014-02-11 | Eaton Corporation | Control valve for a variable displacement pump |
DE102012021498A1 (de) * | 2012-11-02 | 2014-05-08 | Robert Bosch Gmbh | Verstelleinrichtung für eine hydrostatische Verdrängereinheit |
GB2509100A (en) * | 2012-12-20 | 2014-06-25 | Eaton Ind Ip Gmbh & Co Kg | Magnetic position sensor for swashplate control piston |
EP3256725B1 (en) | 2015-02-09 | 2020-04-01 | Eaton Corporation | Torque control system for a variable displacement pump |
DE102016222139A1 (de) * | 2016-11-11 | 2018-05-17 | Robert Bosch Gmbh | Verfahren zum Betreiben einer Axialkolbenmaschine in Schrägscheibenbauweise |
US10145396B2 (en) | 2016-12-15 | 2018-12-04 | Caterpillar Inc. | Energy recovery system and method for hydraulic tool |
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US3252426A (en) * | 1962-08-10 | 1966-05-24 | New York Air Brake Co | Hydraulic device |
US4282711A (en) * | 1979-07-26 | 1981-08-11 | Deere & Company | Hydrostatic transmission control system |
DE3165981D1 (en) | 1980-06-04 | 1984-10-18 | Hitachi Construction Machinery | Circuit pressure control system for hydrostatic power transmission |
DE3042837C2 (de) * | 1980-11-13 | 1982-12-09 | Hydromatik Gmbh, 7900 Ulm | Steuer- und Regeleinrichtung bei einem hydrostatischen Getriebe |
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DE3213958A1 (de) * | 1981-08-21 | 1983-03-03 | Robert Bosch Gmbh, 7000 Stuttgart | Elektrohydraulische verstelleinrichtung fuer eine hydrostatische maschine |
US4487109A (en) | 1982-03-30 | 1984-12-11 | Sundstrand Corporation | Electro-hydraulic control system for a power drive unit |
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JPH10220359A (ja) | 1997-01-31 | 1998-08-18 | Komatsu Ltd | 可変容量型ポンプの制御装置 |
JPH11257207A (ja) * | 1998-03-13 | 1999-09-21 | Yanmar Diesel Engine Co Ltd | 可変容量型油圧ポンプの可動斜板制御装置 |
KR200407224Y1 (ko) | 1998-09-30 | 2006-09-22 | 볼보 컨스트럭션 이키프먼트 홀딩 스웨덴 에이비 | 가변용량형유압펌프의제어장치 |
DE10012405A1 (de) | 2000-03-15 | 2001-09-20 | Mannesmann Rexroth Ag | Einrichtung zur Steuerung eines hydraulischen Aktuators |
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JP4284024B2 (ja) * | 2001-01-18 | 2009-06-24 | サウアー ダンフォス インコーポレイテッド | 小型エンジン用変速機 |
US6623247B2 (en) | 2001-05-16 | 2003-09-23 | Caterpillar Inc | Method and apparatus for controlling a variable displacement hydraulic pump |
DE10138554C1 (de) * | 2001-08-06 | 2003-01-23 | Sauer Danfoss Neumuenster Gmbh | Steuerungseinrichtung für eine proportional verstellbare Hydraulikpumpe und Verstellpumpe für einen hydrostatischen Antrieb |
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US7797081B2 (en) | 2007-06-28 | 2010-09-14 | Caterpillar Inc | Feedback acceleration reduction for fluid supply valves |
-
2009
- 2009-10-06 US US12/573,949 patent/US8596057B2/en active Active
-
2010
- 2010-08-17 DE DE112010003962T patent/DE112010003962T5/de not_active Withdrawn
- 2010-08-17 JP JP2012533150A patent/JP5706431B2/ja not_active Expired - Fee Related
- 2010-08-17 CN CN201080044891.0A patent/CN102575694B/zh not_active Expired - Fee Related
- 2010-08-17 WO PCT/US2010/045721 patent/WO2011043867A2/en active Application Filing
Also Published As
Publication number | Publication date |
---|---|
US8596057B2 (en) | 2013-12-03 |
WO2011043867A3 (en) | 2011-06-03 |
US20110079006A1 (en) | 2011-04-07 |
CN102575694A (zh) | 2012-07-11 |
DE112010003962T5 (de) | 2012-10-31 |
WO2011043867A2 (en) | 2011-04-14 |
JP2013506796A (ja) | 2013-02-28 |
CN102575694B (zh) | 2014-12-10 |
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