EP0205368A1 - Hydraulischer Mechanismus, Motor oder Pumpe mit auf dem Kolben montierten Walzen und Mittel um diese Walzen in Position zu halten - Google Patents

Hydraulischer Mechanismus, Motor oder Pumpe mit auf dem Kolben montierten Walzen und Mittel um diese Walzen in Position zu halten Download PDF

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Publication number
EP0205368A1
EP0205368A1 EP86401030A EP86401030A EP0205368A1 EP 0205368 A1 EP0205368 A1 EP 0205368A1 EP 86401030 A EP86401030 A EP 86401030A EP 86401030 A EP86401030 A EP 86401030A EP 0205368 A1 EP0205368 A1 EP 0205368A1
Authority
EP
European Patent Office
Prior art keywords
face
cylinder
roller
piston
bearing
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
EP86401030A
Other languages
English (en)
French (fr)
Other versions
EP0205368B1 (de
Inventor
Alain William Noel
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.)
Poclain Hydraulics France SA
Original Assignee
Poclain Hydraulics France 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 Poclain Hydraulics France SA filed Critical Poclain Hydraulics France SA
Publication of EP0205368A1 publication Critical patent/EP0205368A1/de
Application granted granted Critical
Publication of EP0205368B1 publication Critical patent/EP0205368B1/de
Expired legal-status Critical Current

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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
    • F04B1/04—Multi-cylinder machines or pumps characterised by number or arrangement of cylinders having cylinders in star- or fan-arrangement
    • F04B1/10—Multi-cylinder machines or pumps characterised by number or arrangement of cylinders having cylinders in star- or fan-arrangement the cylinders being movable, e.g. rotary
    • F04B1/107—Multi-cylinder machines or pumps characterised by number or arrangement of cylinders having cylinders in star- or fan-arrangement the cylinders being movable, e.g. rotary with actuating or actuated elements at the outer ends of the cylinders
    • F04B1/1071—Multi-cylinder machines or pumps characterised by number or arrangement of cylinders having cylinders in star- or fan-arrangement the cylinders being movable, e.g. rotary with actuating or actuated elements at the outer ends of the cylinders with rotary cylinder blocks
    • 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
    • F04B1/04—Multi-cylinder machines or pumps characterised by number or arrangement of cylinders having cylinders in star- or fan-arrangement
    • F04B1/0404—Details or component parts
    • F04B1/0408—Pistons
    • 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
    • F04B1/04—Multi-cylinder machines or pumps characterised by number or arrangement of cylinders having cylinders in star- or fan-arrangement
    • F04B1/0404—Details or component parts
    • F04B1/0439—Supporting or guiding means for the pistons

Definitions

  • a hydraulic mechanism, motor or pump comprising a cam, a cylinder block rotatably mounted relative to the cam, a plurality of cylinders formed in this cylinder block, a plurality of pistons mounted, each, sliding inside a cylinder along a sliding axis (of the piston), a plurality of bearing rollers supporting the pistons on the cam, each roller being mounted on a piston, rotating about a roller axis perpendicular to the sliding axis of said piston by means of a rotation bearing, being axially delimited by two end transverse faces which are substantially planar and parallel, and being capable of penetrating, at least partially, inside the cylinder in which this piston is slidably mounted, the end of said piston, in which said roller rotation bearing is formed, further comprising two recesses which are delimited by two faces substantially flat, parallel, and means for holding the rollers in position in their respective bearings, made integral with the cylinder block and
  • a kind of yoke is put in place at the upper part of each cylinder and has a central opening to allow the roller located at the upper part of the piston mounted in the cylinder to pass.
  • This arrangement seems unsuitable for embodiments having two rows of cylinders, arranged side by side, and, in general, for the innumerable variants which can be designed, such as those in which the roller is not arranged symmetrically with respect to the plane. containing the axes of the various cylinders of a row.
  • the invention intends to remedy these drawbacks and, starting from the first prior art cited (yoke placed at the top of each cylinder), has for this purpose, in a mechanism as defined above, a provision in which the means for holding in position of a roller are constituted by two sets independent of each other, each comprising an axial stop limiting the sliding of the roller parallel to the roller axis, defined by a support d 'a substantially flat surface, this support which.
  • a cylindrical roller or roller 23 is housed in a bearing 24 formed at the end of each piston 11, is rotatably mounted around a roller axis 25 orthogonal to the piston axis 26 of said piston and is supported on the cam 3.
  • This roller 23 is capable of penetrating, at least partially inside the cylinder: the width of the bearing 24 is slightly less than the length of the roller 23, so that, on the side of each transverse face 27 delimiting the roller , a recess 28 is formed in the part of the piston 11 which supports this roller, which makes it possible to constitute; on either side of said roller, free spaces 29.
  • the roller 23 has a length which is approximately one millimeter greater than the width of the step 24 and therefore protrudes slightly from each end. of said bearing.
  • the plane P, perpendicular to the axis 25 of the roller 23 and containing l axis 26 of the piston is a plane of symmetry for the piston 11, the bearing 24, the roller 23, and the two spaces 29. It would also be possible, and in accordance with the invention, to have an asymmetrical arrangement in which the spaces 29 would not be symmetrical to each other with respect to a plane perpendicular to the axis 25 of the roller.
  • a groove 30 is formed in the outer face 31 of each side wall 32 transversely delimiting the cylinder block 8, and has a bottom 33 of groove, and a face 34 oriented in the direction opposite to that L towards which the cylinder 10 opens and located at a distance D from the upper face 35 of the cylinder block, into which the cylinder opens 10.
  • U-shaped jumpers each comprise a first branch 36 and a second branch 37 connected by a bar 38, each overlap one of said side walls 32.
  • the first branch 36 has its internal face 39 delimited in width by two edges 40, which are parallel to the axis 26 of the piston 11 and which are supported on two generatrices of the cylindrical inner surface (10) of the cylinder 10, and, with its external face 41 disposed opposite and near one of the transverse sections 27 of the roller 23 and thus constituting a stop for limiting the possible sliding of u roller 23 relative to its axis 25.
  • the internal face 42 of the bar 38 of the U-shaped rider bears on the upper face 35 of the cylinder block.
  • the second branch 37 of the U has its internal face 43 bearing on the external face 31 of the wall 32 of the cylinder block and at its end ending in a fallen edge, one face 44 of which is parallel to the face 34 of the groove 30 and is supported on this face 34 and whose extreme rectilinear edge 45 is arranged parallel to, and near the bottom 33 of the groove.
  • the establishment of these two U-shaped jumpers leads to their immobilization with respect to the cylinder block 8. In fact, parallel to the axis 26 of the piston 11, each jumper can neither descend, since it is supported by its face 42 on the upper face 35 of the cylinder block, or go up, because the face 44 of its fallen edge is supported on the face 34 of the groove 30.
  • the edges 40 are supported on the internal face (10) of the cylinder, and the internal face 43 of the second branch is supported on the external face 31 of the wall 32.
  • the support of the face 43 of the branch 37 on the face 31 of the wall 32 of the cylinder block prohibits any significant rotation of the rider around the axis 26 of the piston 11.
  • the faces 41 of the two riders are held in position facing the transverse sections 27 of the roller, which, by this means, is correctly maintained in position, both axially (parallel to its axis 25), and in angular orientation (relative to axis 26 of the piston).
  • the bearing 24 circumferentially surrounds the corresponding roller 23 by an arc of a circle greater than 180 °.
  • a kind of lunula 46 occupies part of this space. It is delimited, in particular, by a cylindrical face 47, which is in abutment on the internal cylindrical face (10) of the cylinder, and by a planar face 48 disposed parallel to a transverse face 27 of the roller 23, near and opposite this face 27.
  • the lunula 46 has a tapped hole 49, capable of being disposed opposite a through hole 50, which is provided with each side wall 32 of the cylinder block.
  • a screw 51, passing through the hole 50, has a thread 52 capable of cooperating with the internal thread 49 to immobilize the lunula relative to the cylinder 10.
  • the flat faces 48 of the lunules 46 constitute stops for immobilizing the roller 23 in the direction of sliding parallel to its axis 25 and in angular orientation relative to the axis 26 of the piston 11.
  • FIG. 7 An alternative embodiment of FIGS. 5 and 6 is shown in FIG. 7.
  • each lunula has a cavity 53, which opens into its cylindrical face, is capable of entirely containing a spring 54 and a sliding pin 55, which the spring 54 tends to push out of the cavity 53.
  • the lunula In the service position, the lunula has its cavity 53 arranged opposite a housing 56 formed in the side wall 32 of the cylinder block, opening into the internal cylindrical face (10) of the cylinder and capable of receiving part of the pin 55
  • the pin 55 slides towards the outside of the cavity 53, pushed by the spring 54, and, penetrating into the housing 56, immobilizes the lunula 46 relative to the cylinder block.
  • a hole 57 carries out the passage of a rod to push the pin out of the housing 56, in order to allow the subsequent disassembly of the lunulas.
  • two lunules 46 are provided, the flat face 48 of each of which has in its central zone a housing 58 of the first branch 59 of a U-shaped jumper.
  • This branch 59 ends with a. first fallen edge 60, which is spaced from the internal face 42 of the bar 38 of the U, by a distance equal to the height of a lunula.
  • the second branch 37 of the U ends in a second fallen edge delimited by a flat face 44, which bears on the upper face 34 with a groove 30 which is provided on the outer face 31 of the wall 32, when the internal face 42 of the U-bar is supported on the upper face 35 of the wall 32 of the cylinder block, and by a straight edge 45 which is supported on the bottom 33 of the groove 30. It is understood that each lunula 46 is thus immobilized relative to the cylinder block, by means of this U-shaped jumper.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Reciprocating Pumps (AREA)
  • Hydraulic Motors (AREA)
  • Rolls And Other Rotary Bodies (AREA)
  • Pistons, Piston Rings, And Cylinders (AREA)
EP86401030A 1985-05-15 1986-05-14 Hydraulischer Mechanismus, Motor oder Pumpe mit auf dem Kolben montierten Walzen und Mittel um diese Walzen in Position zu halten Expired EP0205368B1 (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FR8507426 1985-05-15
FR8507426A FR2582058B1 (fr) 1985-05-15 1985-05-15 Mecanisme hydraulique, moteur ou pompe, muni de rouleaux montes sur les pistons et de moyens de maintien en position desdits rouleaux

Publications (2)

Publication Number Publication Date
EP0205368A1 true EP0205368A1 (de) 1986-12-17
EP0205368B1 EP0205368B1 (de) 1989-05-03

Family

ID=9319332

Family Applications (1)

Application Number Title Priority Date Filing Date
EP86401030A Expired EP0205368B1 (de) 1985-05-15 1986-05-14 Hydraulischer Mechanismus, Motor oder Pumpe mit auf dem Kolben montierten Walzen und Mittel um diese Walzen in Position zu halten

Country Status (7)

Country Link
US (1) US4719843A (de)
EP (1) EP0205368B1 (de)
JP (1) JPS61265325A (de)
DE (1) DE3663174D1 (de)
FI (1) FI80766C (de)
FR (1) FR2582058B1 (de)
IN (1) IN165940B (de)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2658869A1 (fr) * 1990-02-16 1991-08-30 Rexroth Mannesmann Gmbh Machine a pistons radiaux et son procede de fabrication.
FR2727471A1 (fr) * 1994-11-30 1996-05-31 Poclain Hydraulics Sa Mecanisme, moteur ou pompe, a pistons munis de rouleaux d'appui sur une came
WO1998014722A1 (en) * 1996-10-02 1998-04-09 Jurij Manfreda A piston assembly of a hydraulic radial piston-type machine
FR3010744A1 (fr) * 2013-09-16 2015-03-20 Poclain Hydraulics Ind Bloc cylindres ameliore pour machine hydraulique presentant un encombrement radial optimise

Families Citing this family (18)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2644210B1 (fr) * 1989-03-07 1994-06-03 Poclain Hydraulics Sa Dispositif d'immobilisation mutuelle de deux elements montes a rotation relative
FR2651836B1 (fr) * 1989-09-14 1994-06-10 Poclain Hydraulics Sa Mecanisme, moteur ou pompe, a pistons supportant des rouleaux d'appui desdits pistons sur une came.
US5357843A (en) * 1990-04-24 1994-10-25 Ester Errante Hydraulic pumps or motors of the radial cylinder type
US5400594A (en) * 1992-09-04 1995-03-28 Tecumseh Products Company Slipper guide for a hydrostatic transmission
DE19618792B4 (de) * 1996-05-10 2007-01-18 Bosch Rexroth Aktiengesellschaft Radialkolbenmaschine
US6161466A (en) * 1997-07-30 2000-12-19 Robert Bosch Gmbh Piston pump for a vehicle brake system
DE19810372A1 (de) * 1998-03-10 1999-09-16 Mannesmann Rexroth Ag Radialkolbenmotor mit Rollenführung
DE19832696A1 (de) * 1998-07-21 2000-01-27 Mannesmann Rexroth Ag Radialkolbenmaschine mit Rollenführungen
DE19851324C1 (de) * 1998-11-06 2000-03-16 Sauer Sundstrand Gmbh & Co Hydraulischer Radialkolbenmotor mit Führungselementen zur axialen Führung von dessen Zylinderrollen und Werkzeug zur Montage der Führungselemente
DE102006045933A1 (de) * 2006-09-28 2008-04-03 Robert Bosch Gmbh Stößelbaugruppe für eine Hochdruckpumpe und Hochdruckpumpe mit wenigstens einer Stößelbaugruppe
DE102006058076A1 (de) * 2006-12-07 2008-06-19 Zf Friedrichshafen Ag Hydraulischer Radialkolbenmotor
CN101858300A (zh) * 2010-06-10 2010-10-13 宁波市恒通液压科技有限公司 内曲线多作用径向柱塞式液压马达
JP2014141957A (ja) * 2012-12-28 2014-08-07 Mitsubishi Heavy Ind Ltd ラジアルピストン式油圧機械および風力発電装置
WO2020021019A1 (fr) 2018-07-25 2020-01-30 Poclain Hydraulics Industrie Machine hydraulique
FR3084411B1 (fr) 2018-07-25 2021-06-18 Poclain Hydraulics Ind Machine hydraulique
FR3090755B1 (fr) 2018-12-21 2021-01-08 Poclain Hydraulics Ind Texturation de surfaces
FR3094425B1 (fr) 2019-03-27 2021-04-23 Poclain Hydraulics Ind Machine hydraulique comportant un palier perfectionné
CN112855427A (zh) * 2021-03-09 2021-05-28 秦皇岛正时乐液压设备有限公司 一种多作用内曲线液压马达的紧凑型柱塞-辊子结构

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2160120A5 (de) * 1971-11-09 1973-06-22 Renold Ltd
FR2196674A5 (de) * 1972-08-16 1974-03-15 Newage Engineers Ltd
GB2097867A (en) * 1981-05-04 1982-11-10 Poclain Hydraulics Sa Radial piston machines

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB1220146A (en) * 1968-07-19 1971-01-20 Davy & United Eng Co Ltd Hydraulic motor
GB1299442A (en) * 1969-03-27 1972-12-13 Joseph Latham Monks Improvements in hydraulic pumps or motors
US3922956A (en) * 1971-11-09 1975-12-02 Renold Ltd Hydraulic motors
GB1463495A (de) * 1973-04-09 1977-02-02

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2160120A5 (de) * 1971-11-09 1973-06-22 Renold Ltd
FR2196674A5 (de) * 1972-08-16 1974-03-15 Newage Engineers Ltd
GB2097867A (en) * 1981-05-04 1982-11-10 Poclain Hydraulics Sa Radial piston machines

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2658869A1 (fr) * 1990-02-16 1991-08-30 Rexroth Mannesmann Gmbh Machine a pistons radiaux et son procede de fabrication.
FR2727471A1 (fr) * 1994-11-30 1996-05-31 Poclain Hydraulics Sa Mecanisme, moteur ou pompe, a pistons munis de rouleaux d'appui sur une came
GB2295653A (en) * 1994-11-30 1996-06-05 Poclain Hydraulics Sa A hydraulic motor or pump mechanism having pistons provided with thrust rollers for bearing against a cam
GB2295653B (en) * 1994-11-30 1998-04-08 Poclain Hydraulics Sa A hydraulic motor or pump mechanism having pistons provided with thrust rollers for bearing aginst a CAM
WO1998014722A1 (en) * 1996-10-02 1998-04-09 Jurij Manfreda A piston assembly of a hydraulic radial piston-type machine
FR3010744A1 (fr) * 2013-09-16 2015-03-20 Poclain Hydraulics Ind Bloc cylindres ameliore pour machine hydraulique presentant un encombrement radial optimise

Also Published As

Publication number Publication date
FR2582058A1 (fr) 1986-11-21
DE3663174D1 (en) 1989-06-08
US4719843A (en) 1988-01-19
FI861905A0 (fi) 1986-05-07
JPS61265325A (ja) 1986-11-25
EP0205368B1 (de) 1989-05-03
IN165940B (de) 1990-02-10
FI80766B (fi) 1990-03-30
FR2582058B1 (fr) 1989-06-30
FI861905A (fi) 1986-11-16
FI80766C (fi) 1990-07-10

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