EP2669516A1 - Hydraulische Axialkolbenpumpe - Google Patents

Hydraulische Axialkolbenpumpe Download PDF

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Publication number
EP2669516A1
EP2669516A1 EP13169420.0A EP13169420A EP2669516A1 EP 2669516 A1 EP2669516 A1 EP 2669516A1 EP 13169420 A EP13169420 A EP 13169420A EP 2669516 A1 EP2669516 A1 EP 2669516A1
Authority
EP
European Patent Office
Prior art keywords
section
pump
face
recesses
contour
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
EP13169420.0A
Other languages
English (en)
French (fr)
Other versions
EP2669516B1 (de
Inventor
Ludovic Leglize
Thierry Caule
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Safran Landing Systems SAS
Original Assignee
Messier Bugatti Dowty SA
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 Messier Bugatti Dowty SA filed Critical Messier Bugatti Dowty SA
Publication of EP2669516A1 publication Critical patent/EP2669516A1/de
Application granted granted Critical
Publication of EP2669516B1 publication Critical patent/EP2669516B1/de
Active legal-status Critical Current
Anticipated expiration legal-status Critical

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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
    • 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
    • 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
    • F04B1/22—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 having two or more sets of cylinders or pistons
    • F04B1/24—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 having two or more sets of cylinders or pistons inclined to the main shaft axis
    • 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
    • F04B27/00—Multi-cylinder pumps specially adapted for elastic fluids and characterised by number or arrangement of cylinders
    • F04B27/08—Multi-cylinder pumps specially adapted for elastic fluids and characterised by number or arrangement of cylinders having cylinders coaxial with, or parallel or inclined to, main shaft axis
    • F04B27/0804—Multi-cylinder pumps specially adapted for elastic fluids and characterised by number or arrangement of cylinders having cylinders coaxial with, or parallel or inclined to, main shaft axis having rotary cylinder block
    • F04B27/0821—Multi-cylinder pumps specially adapted for elastic fluids and characterised by number or arrangement of cylinders having cylinders coaxial with, or parallel or inclined to, main shaft axis having rotary cylinder block component parts, details, e.g. valves, sealings, lubrication
    • F04B27/0839—Multi-cylinder pumps specially adapted for elastic fluids and characterised by number or arrangement of cylinders having cylinders coaxial with, or parallel or inclined to, main shaft axis having rotary cylinder block component parts, details, e.g. valves, sealings, lubrication valve means, e.g. valve plate
    • 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
    • F04B39/00—Component parts, details, or accessories, of pumps or pumping systems specially adapted for elastic fluids, not otherwise provided for in, or of interest apart from, groups F04B25/00 - F04B37/00
    • F04B39/10—Adaptations or arrangements of distribution members
    • F04B39/1066—Valve plates

Definitions

  • the invention relates to a hydraulic pump with axial pistons comprising a rotary barrel having an end face cooperating with a dispensing ice.
  • the object of the invention is to propose modifications of limited size to be made to pumps, so as to allow in particular the adaptation of an aluminum body.
  • an axial piston hydraulic pump comprising a rotary barrel having an end face which cooperates with a dispensing window having two diametrically opposite through recesses which are respectively connected to a suction port and to a suction port. a discharge port of the pump, the barrel having a plurality of axial bores opening on the end face and in which pistons are slidably mounted, the axial bores being in communication alternately with the suction and discharge ports through the recesses; through the distribution ice.
  • the through recesses each have a variable current section between a first section delimited by a first contour at a first face of the ice facing the barrel, and a second section delimited by a second contour of distinct shape. the first contour at a second face of the dispensing ice opposite the first face.
  • the pump of the invention finds a particularly advantageous application in aircraft hydraulic circuits in which the pressures are commonly several hundred bars. It may for example equip an aerodynamic surface actuator, or a landing gear actuator.
  • the pump 1 comprises a pump body 2 composed of a first part 2a and a second part 2b accommodating the constituent elements of the pump 1.
  • the first part 2a of the pump body receives a dispensing glass 3 cooperating with a cylinder 4 by pressing a bearing surface 5 of the dispensing window 3 against an end face 6 of the cylinder 4, these faces being perpendicular to an axis of revolution X of the cylinder 4.
  • the cylinder 4 comprises a series of axial bores 7 (ie extending parallel to the axis of revolution X barrel) in order to serve as guides to sliding pistons 8.
  • a conduit 9 communicates the bearing surface 5 of the ice 3 with the interior of the volume of the delimited cylindrical space by each piercing 7 and the associated piston 8.
  • a driver 10 surrounding the barrel 4 is rotatably mounted.
  • the trainer 10 is composed of a cylindrical portion 11 accommodating the barrel 4, a transverse wall 12 forming a support for a spring 13 pressing the barrel 4 against the dispensing window 3, and a bevel gear 14.
  • the driver 10 is rotatably mounted on the first portion 2a of the body 2 to the rolling means 15 allowing the free rotation of the driver 10 along an axis coincident with the axis of revolution X of the cylinder 4.
  • the bevel gear 14 is intended to cooperate with a counterpart gear 16 arranged on a drive shaft 17 rotatably mounted by means of bearings 18 on the second portion 2b of the body 2, and disposed along an axis Y which is concurrent with the axis X.
  • Housings 19 are arranged axially on one face of the drive shaft 17 forming a plate 20 facing the driver 10. These housings 19 each comprise a cylindrical portion 21 threading into a bore 22 associated formed on the face of the drive shaft 17, and each have a spherical receptacle 40 swiveling the spherical end 23 of an associated rod 24, the other end also spherical 25 is rotated on the corresponding piston.
  • the bore 22 is made substantially opposite the trace of the axis of the piston on a plane normal to the Y axis passing through the center of the receptacles 40 of the housings 19.
  • the housings 19 are connected to the plate 20 by a circular flange 24 reported, common to all housing, by means of a central screw 27.
  • the pistons 8 In their relative movement relative to the cylinder 4, the pistons 8 have a displacement 7.
  • the ducts 9 located at the end of the bores 7 move opposite two through recesses 28 of the dispensing window 3.
  • One of these recesses 28 communicates with a suction port 29 of the pump 1, the other to a discharge port 30 of the pump 1.
  • the hydraulic fluid is sucked and discharged by the pump 1 by the action of the pistons 8, via the conduits 9, the through recesses 28, and the suction orifices 29 and discharge 30.
  • the diametrically opposed transverse recesses 28 on the distribution window 3 each have a variable section between a first section 31 delimited by a first contour 32 at the bearing surface 5 of the ice 3, and a second section 33 delimited by a second contour 34 at a second face 35 of the distribution window 3 facing the suction orifices 29 and discharge 30.
  • Each of the sections 31, 33 has a generally oblong curved shape extending over the almost all of a semicircle surrounding the centers of the faces of the ice.
  • the second section 33 has a broader shape, less long and less curved contour than that of the first section 31. Despite this difference in shape, the first and second section have a surface substantially equal.
  • each of the through recesses 28 has a substantially constant surface cross section, from a first section of narrower and longer shape, to a second section wider and shorter.
  • This particular shape of the through recesses 28 makes it possible to transfer mechanical stresses from the body 2 of the pump 1 to the dispensing window 3.
  • a relatively light material for the body 2 of the pump 1 aluminum, for example
  • a heavier but more robust material for the distribution window 3 steel for example
  • the design of the pump 1 of the invention is derived from the design of a pump previously developed for an aircraft whose hydraulic pressure is greater (the context of such reuse has been described earlier), and in the case where only the dispensing glass 3 has been modified (as well as possibly the material of other elements of the pump 1), it is of course necessary to keep the shape of the first section 31 at the bearing surface 5 of the ice, which is defined by the dimensions and the rotational movement of the barrel 4 and the pistons 8. It is also noted that, as the sections of each recess of the pump of the invention have a substantially constant surface, the fluid flow properties of the pump of the invention are preserved compared to those of the pump before modification.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Details Of Reciprocating Pumps (AREA)
  • Reciprocating Pumps (AREA)
EP13169420.0A 2012-05-31 2013-05-28 Hydraulische Axialkolbenpumpe Active EP2669516B1 (de)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR1255056A FR2991400B1 (fr) 2012-05-31 2012-05-31 Pompe hydraulique a pistons axiaux

Publications (2)

Publication Number Publication Date
EP2669516A1 true EP2669516A1 (de) 2013-12-04
EP2669516B1 EP2669516B1 (de) 2017-07-12

Family

ID=48463893

Family Applications (1)

Application Number Title Priority Date Filing Date
EP13169420.0A Active EP2669516B1 (de) 2012-05-31 2013-05-28 Hydraulische Axialkolbenpumpe

Country Status (2)

Country Link
EP (1) EP2669516B1 (de)
FR (1) FR2991400B1 (de)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN104533596A (zh) * 2014-11-15 2015-04-22 龚柱 流体转移装置用的触发轮的设计方法
CN105604916A (zh) * 2016-02-21 2016-05-25 珠海格力节能环保制冷技术研究中心有限公司 压缩机阀板及压缩机阀组件
CN105864154A (zh) * 2015-02-11 2016-08-17 丹佛斯有限公司 液压装置

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102018214165A1 (de) * 2018-08-22 2020-02-27 Robert Bosch Gmbh Steuerplatte für Axialkolbenmaschine und Axialkolbenmaschine mit Steuerplatte

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3523678A (en) * 1968-03-13 1970-08-11 Lucas Industries Ltd Valve plate for a hydraulic pump or motor
JPS59215973A (ja) * 1983-05-20 1984-12-05 Hitachi Constr Mach Co Ltd 容量可変型斜軸式液圧回転機
DE4035748A1 (de) * 1989-11-09 1991-05-16 Vickers Systems Gmbh Axialkolbenpumpe fuer hohe drehzahlen
US5182978A (en) * 1988-10-03 1993-02-02 Hitachi Construction Machinery Co., Ltd. Bent axis type variable displacement hydraulic machine
US6640687B1 (en) * 2002-08-09 2003-11-04 Sauer-Danfoss Inc. Control system for hydrostatic pump

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3523678A (en) * 1968-03-13 1970-08-11 Lucas Industries Ltd Valve plate for a hydraulic pump or motor
JPS59215973A (ja) * 1983-05-20 1984-12-05 Hitachi Constr Mach Co Ltd 容量可変型斜軸式液圧回転機
US5182978A (en) * 1988-10-03 1993-02-02 Hitachi Construction Machinery Co., Ltd. Bent axis type variable displacement hydraulic machine
DE4035748A1 (de) * 1989-11-09 1991-05-16 Vickers Systems Gmbh Axialkolbenpumpe fuer hohe drehzahlen
US6640687B1 (en) * 2002-08-09 2003-11-04 Sauer-Danfoss Inc. Control system for hydrostatic pump

Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN104533596A (zh) * 2014-11-15 2015-04-22 龚柱 流体转移装置用的触发轮的设计方法
CN105864154A (zh) * 2015-02-11 2016-08-17 丹佛斯有限公司 液压装置
EP3056730A1 (de) * 2015-02-11 2016-08-17 Danfoss A/S Hydraulische Vorrichtung
CN105864154B (zh) * 2015-02-11 2017-12-12 丹佛斯有限公司 液压装置
US10436184B2 (en) 2015-02-11 2019-10-08 Danfoss A/S Hydraulic device
CN105604916A (zh) * 2016-02-21 2016-05-25 珠海格力节能环保制冷技术研究中心有限公司 压缩机阀板及压缩机阀组件
CN105604916B (zh) * 2016-02-21 2018-08-03 珠海格力节能环保制冷技术研究中心有限公司 压缩机阀板及压缩机阀组件

Also Published As

Publication number Publication date
EP2669516B1 (de) 2017-07-12
FR2991400A1 (fr) 2013-12-06
FR2991400B1 (fr) 2015-12-25

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