WO2012016240A3 - Variable displacement hydraulic pump/motor with hydrostatic valve plate - Google Patents

Variable displacement hydraulic pump/motor with hydrostatic valve plate Download PDF

Info

Publication number
WO2012016240A3
WO2012016240A3 PCT/US2011/046123 US2011046123W WO2012016240A3 WO 2012016240 A3 WO2012016240 A3 WO 2012016240A3 US 2011046123 W US2011046123 W US 2011046123W WO 2012016240 A3 WO2012016240 A3 WO 2012016240A3
Authority
WO
WIPO (PCT)
Prior art keywords
valve plate
barrel
outlet opening
variable displacement
displacement hydraulic
Prior art date
Application number
PCT/US2011/046123
Other languages
French (fr)
Other versions
WO2012016240A2 (en
Inventor
Bruce Larkin
Larry Hartter
Paul Korenkiewicz
Original Assignee
Parker-Hannifin Corporation
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 by Parker-Hannifin Corporation filed Critical Parker-Hannifin Corporation
Priority to US13/808,690 priority Critical patent/US20130115112A1/en
Priority to EP11741073.8A priority patent/EP2598748A2/en
Publication of WO2012016240A2 publication Critical patent/WO2012016240A2/en
Publication of WO2012016240A3 publication Critical patent/WO2012016240A3/en

Links

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
    • F04B1/00—Multi-cylinder machines or pumps characterised by number or arrangement of cylinders
    • F04B1/12—Multi-cylinder machines or pumps characterised by number or arrangement of cylinders having cylinder axes coaxial with, or parallel or inclined to, main shaft axis
    • F04B1/26—Control
    • F04B1/30—Control of machines or pumps with rotary cylinder blocks
    • F04B1/32—Control of machines or pumps with rotary cylinder blocks by varying the relative positions of a swash plate and a cylinder block
    • F04B1/328—Control of machines or pumps with rotary cylinder blocks by varying the relative positions of a swash plate and a cylinder block by changing the inclination of the axis of the cylinder barrel relative to the swash plate
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F03—MACHINES OR ENGINES FOR LIQUIDS; WIND, SPRING, OR WEIGHT MOTORS; PRODUCING MECHANICAL POWER OR A REACTIVE PROPULSIVE THRUST, NOT OTHERWISE PROVIDED FOR
    • F03C—POSITIVE-DISPLACEMENT ENGINES DRIVEN BY LIQUIDS
    • F03C1/00—Reciprocating-piston liquid engines
    • F03C1/02—Reciprocating-piston liquid engines with multiple-cylinders, characterised by the number or arrangement of cylinders
    • F03C1/06—Reciprocating-piston liquid engines with multiple-cylinders, characterised by the number or arrangement of cylinders with cylinder axes generally coaxial with, or parallel or inclined to, main shaft axis
    • F03C1/0636—Reciprocating-piston liquid engines with multiple-cylinders, characterised by the number or arrangement of cylinders with cylinder axes generally coaxial with, or parallel or inclined to, main shaft axis having rotary cylinder block
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F03—MACHINES OR ENGINES FOR LIQUIDS; WIND, SPRING, OR WEIGHT MOTORS; PRODUCING MECHANICAL POWER OR A REACTIVE PROPULSIVE THRUST, NOT OTHERWISE PROVIDED FOR
    • F03C—POSITIVE-DISPLACEMENT ENGINES DRIVEN BY LIQUIDS
    • F03C1/00—Reciprocating-piston liquid engines
    • F03C1/02—Reciprocating-piston liquid engines with multiple-cylinders, characterised by the number or arrangement of cylinders
    • F03C1/06—Reciprocating-piston liquid engines with multiple-cylinders, characterised by the number or arrangement of cylinders with cylinder axes generally coaxial with, or parallel or inclined to, main shaft axis
    • F03C1/0636—Reciprocating-piston liquid engines with multiple-cylinders, characterised by the number or arrangement of cylinders with cylinder axes generally coaxial with, or parallel or inclined to, main shaft axis having rotary cylinder block
    • F03C1/0644—Component parts
    • F03C1/0655—Valve means
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F03—MACHINES OR ENGINES FOR LIQUIDS; WIND, SPRING, OR WEIGHT MOTORS; PRODUCING MECHANICAL POWER OR A REACTIVE PROPULSIVE THRUST, NOT OTHERWISE PROVIDED FOR
    • F03C—POSITIVE-DISPLACEMENT ENGINES DRIVEN BY LIQUIDS
    • F03C1/00—Reciprocating-piston liquid engines
    • F03C1/02—Reciprocating-piston liquid engines with multiple-cylinders, characterised by the number or arrangement of cylinders
    • F03C1/06—Reciprocating-piston liquid engines with multiple-cylinders, characterised by the number or arrangement of cylinders with cylinder axes generally coaxial with, or parallel or inclined to, main shaft axis
    • F03C1/0678—Control
    • F03C1/0694—Control by changing the inclination of the axis of the cylinder barrel in relation to the axis of the actuated element
    • 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
    • F04B1/00—Multi-cylinder machines or pumps characterised by number or arrangement of cylinders
    • F04B1/12—Multi-cylinder machines or pumps characterised by number or arrangement of cylinders having cylinder axes coaxial with, or parallel or inclined to, main shaft axis
    • F04B1/20—Multi-cylinder machines or pumps characterised by number or arrangement of cylinders having cylinder axes coaxial with, or parallel or inclined to, main shaft axis having rotary cylinder block
    • 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
    • F04B1/00—Multi-cylinder machines or pumps characterised by number or arrangement of cylinders
    • F04B1/12—Multi-cylinder machines or pumps characterised by number or arrangement of cylinders having cylinder axes coaxial with, or parallel or inclined to, main shaft axis
    • F04B1/20—Multi-cylinder machines or pumps characterised by number or arrangement of cylinders having cylinder axes coaxial with, or parallel or inclined to, main shaft axis having rotary cylinder block
    • F04B1/2014—Details or component parts
    • F04B1/2042—Valves

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Reciprocating Pumps (AREA)

Abstract

A variable displacement hydraulic axial piston machine includes (a) a housing having an outlet opening; (b) a barrel mounted in the housing for rotation about a rotation axis; (c) a plurality of pistons movable in respective bores in the barrel; (d) a valve plate coupled to the barrel and having a fluid passage therein that ends at an outlet opening; and (e) a flow tube connecting the outlet opening in the valve plate to the outlet opening in the housing. The barrel and the valve plate are pivotally movable together about a pivot axis transverse the rotation axis for varying the displacement of the pistons in the bores. An end of the flow tube connects to the valve plate while allowing for axial movement of the flow tube relative to the valve plate in a direction parallel to the rotational axis of the barrel.
PCT/US2011/046123 2010-07-30 2011-08-01 Variable displacement hydraulic pump/motor with hydrostatic valve plate WO2012016240A2 (en)

Priority Applications (2)

Application Number Priority Date Filing Date Title
US13/808,690 US20130115112A1 (en) 2010-07-30 2011-08-01 Variable displacement hydraulic pump/motor with hydrostatic valve plate
EP11741073.8A EP2598748A2 (en) 2010-07-30 2011-08-01 Variable displacement hydraulic pump/motor with hydrostatic valve plate

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US36920910P 2010-07-30 2010-07-30
US61/369,209 2010-07-30

Publications (2)

Publication Number Publication Date
WO2012016240A2 WO2012016240A2 (en) 2012-02-02
WO2012016240A3 true WO2012016240A3 (en) 2012-03-22

Family

ID=44629743

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/US2011/046123 WO2012016240A2 (en) 2010-07-30 2011-08-01 Variable displacement hydraulic pump/motor with hydrostatic valve plate

Country Status (3)

Country Link
US (1) US20130115112A1 (en)
EP (1) EP2598748A2 (en)
WO (1) WO2012016240A2 (en)

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2014165361A1 (en) 2013-04-02 2014-10-09 Parker-Hannifin Corporation Pump control method and system
WO2013165493A1 (en) 2012-05-02 2013-11-07 Parker-Hannifin Corporation Hydromechanical transmission with double sump gear unit housing
DE102017208755A1 (en) * 2017-05-23 2018-11-29 Danfoss Power Solutions Gmbh & Co. Ohg HYDROSTATIC SUPPORT AND LUBRICATION ON VALV SEGMENT LOAD
US11898582B1 (en) * 2023-03-09 2024-02-13 Dana Motion Systems Italia S.R.L. System for a bent axis motor

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4129063A (en) * 1975-10-01 1978-12-12 Ifield Engineering Pty. Limited Bent axis pumps and motors
US4991492A (en) * 1988-11-30 1991-02-12 Stig Bratt Hydrostatic axial piston machine
US6604446B1 (en) * 2000-09-11 2003-08-12 Sauer-Danfoss Inc. Inclined-axis variable displacement unit
US20050193888A1 (en) * 2004-03-08 2005-09-08 Gov. Of The U.S.A., As Represented By The Adm. Of The U.S. Environmental Protection Agency Efficient pump/motor with reduced energy loss
WO2010091305A2 (en) * 2009-02-06 2010-08-12 Government Of The United States Of America, As Represented By The Administrator Of The U.S. Environmental Protection Agency Variable length bent-axis pump/motor

Family Cites Families (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2049526A5 (en) * 1969-06-12 1971-03-26 Peugeot & Renault
US5554007A (en) * 1994-10-17 1996-09-10 Caterpillar Inc. Variable displacement axial piston hydraulic unit
US7014429B2 (en) * 2003-03-06 2006-03-21 The United States Of America As Represented By The Administrator Of The U.S. Environmental Protection Agency High-efficiency, large angle, variable displacement hydraulic pump/motor
US7594802B2 (en) * 2004-04-21 2009-09-29 The United States Of America As Represented By The Administrator Of The U.S. Environmental Protection Agency Large angle sliding valve plate pump/motor
SE533414C2 (en) * 2008-09-17 2010-09-21 Parker Hannifin Ab Trunk sensor for a hydraulic device
US8316995B2 (en) * 2009-12-22 2012-11-27 Parker-Hannifin Corporation Hydraulic machine with oil dams

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4129063A (en) * 1975-10-01 1978-12-12 Ifield Engineering Pty. Limited Bent axis pumps and motors
US4991492A (en) * 1988-11-30 1991-02-12 Stig Bratt Hydrostatic axial piston machine
US6604446B1 (en) * 2000-09-11 2003-08-12 Sauer-Danfoss Inc. Inclined-axis variable displacement unit
US20050193888A1 (en) * 2004-03-08 2005-09-08 Gov. Of The U.S.A., As Represented By The Adm. Of The U.S. Environmental Protection Agency Efficient pump/motor with reduced energy loss
WO2010091305A2 (en) * 2009-02-06 2010-08-12 Government Of The United States Of America, As Represented By The Administrator Of The U.S. Environmental Protection Agency Variable length bent-axis pump/motor

Also Published As

Publication number Publication date
EP2598748A2 (en) 2013-06-05
US20130115112A1 (en) 2013-05-09
WO2012016240A2 (en) 2012-02-02

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