EP3258100B1 - Kolben für eine hydraulische maschine mit radialen kolben mit begrenzter reibung - Google Patents

Kolben für eine hydraulische maschine mit radialen kolben mit begrenzter reibung Download PDF

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Publication number
EP3258100B1
EP3258100B1 EP17176083.8A EP17176083A EP3258100B1 EP 3258100 B1 EP3258100 B1 EP 3258100B1 EP 17176083 A EP17176083 A EP 17176083A EP 3258100 B1 EP3258100 B1 EP 3258100B1
Authority
EP
European Patent Office
Prior art keywords
roller
inserts
piston
face
axis
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.)
Active
Application number
EP17176083.8A
Other languages
English (en)
French (fr)
Other versions
EP3258100A1 (de
Inventor
Gilles Lemaire
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 Industrie
Original Assignee
Poclain Hydraulics Industrie
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 Industrie filed Critical Poclain Hydraulics Industrie
Publication of EP3258100A1 publication Critical patent/EP3258100A1/de
Application granted granted Critical
Publication of EP3258100B1 publication Critical patent/EP3258100B1/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
    • F04B1/04—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
    • F04B1/0413—Cams
    • F04B1/0417—Cams consisting of two or more cylindrical elements, e.g. rollers
    • 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
    • F03C1/04—Reciprocating-piston liquid engines with multiple-cylinders, characterised by the number or arrangement of cylinders with cylinders in star or fan arrangement
    • F03C1/0403—Details, component parts specially adapted of such engines
    • F03C1/0409—Cams
    • F03C1/0412—Cams consisting of several cylindrical elements, e.g. rollers
    • 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
    • F03C1/04—Reciprocating-piston liquid engines with multiple-cylinders, characterised by the number or arrangement of cylinders with cylinders in star or fan arrangement
    • F03C1/0403—Details, component parts specially adapted of such engines
    • F03C1/0428—Supporting and guiding means for the 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 piston configured to slide along a cylinder of a radial piston machine, said piston comprising a roller mounted to rotate about a first axis in a housing located at a end of said piston, characterized in that said piston comprises two inserts located on either side of the roller so that each of the inserts form a stop for a translation of the roller along the first axis inside the housing, each of the inserts. comprising a first face bearing on only a portion of the surface of an axial end of the roller, and a second face configured to slide along the cylinder, the roller being movable in translation along the first axis between the two inserts, and the inserts being movable in translation along the first axis inside the housing.
  • the inserts are formed solely of a main body forming both the first face and the second face.
  • the invention also relates to a radial piston hydraulic machine comprising a piston according to any one of the abovementioned characteristics.
  • the position of the inserts 5 in the housing 11 can also be determined by the bearing on the bearing 4, especially in the case of mounting without axial play of the roller 3 between the inserts 5. However, a certain angular tolerance remains.
  • the additional piece may be adapted to not be rotated about the first axis ⁇ .
  • the additional piece can thus comprise elements projecting from said additional piece and cooperating with elements of complementary shape dug in the insert 5 in order to block the rotation along the first axis ⁇ .
  • Elements projecting from the additional part may also cooperate with elements of complementary shape dug in the cylinder 2, so as to prevent rotation of the additional part along the first axis ⁇ with respect to the cylinder 2.
  • These projecting elements may for example for example, ribs formed on the additional piece.

Landscapes

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

Claims (7)

  1. Kolben (1), der so konfiguriert ist, dass er einen Zylinder (2) einer Radialkolben-Hydraulikmaschine entlang gleitet, wobei der Kolben (1) eine Laufrolle (3) umfasst, die drehbar um eine erste Achse (β) in einem Gehäuse (11) montiert ist, das an einem Ende des Kolbens (1) angeordnet ist, wobei der Kolben (1) zwei Einsätze (5) beidseitig der Laufrolle (3) umfasst, so dass jeder der Einsätze (5) einen Anschlag für eine Verschiebung der Laufrolle (3) entlang der ersten Achse (β) im Gehäuseinnern (11) bildet, wobei jeder der Einsätze (5) eine erste Fläche (51) umfasst, die nur an einem Teil der Oberfläche eines axialen Endes (31, 32) der Laufrolle (3) anliegt, und eine zweite Fläche (52), die so konfiguriert ist, dass sie den Zylinder (2) entlang gleitet, wobei die Laufrolle (3) in Verschiebung entlang der ersten Achse (β) zwischen den beiden Einsätzen (5) beweglich ist, und dadurch gekennzeichnet, dass die Einsätze (5) in Verschiebung entlang der ersten Achse (β) im Gehäuseinnern (11) beweglich sind, wobei die Einsätze (5) jeweils einen Hauptkörper (53) umfassen, der einen Hohlraum (54) umfasst, in den ein Teil (55) eingesetzt wird, das vom Hohlraum (54) in Richtung des Gehäuseinnern (11) vorsteht, um sich an die Laufrolle (3) anzulegen.
  2. Kolben (1) nach Anspruch 1, wobei die erste Fläche (51) der Einsätze (5) an weniger als 20 % der Fläche des axialen Endes (31, 32) der Laufrolle (3) anliegt.
  3. Kolben (1) nach einem beliebigen der vorstehenden Ansprüche 1 oder 2, wobei das Anliegen der ersten Fläche (51) jedes der Einsätze (5) um einen Punkt zentriert ist, dessen Abstand im Verhältnis zur ersten Achse (β) zwischen 0 % und 30 % des Radius der Laufrolle (3) beträgt.
  4. Kolben (1) nach einem beliebigen der vorstehenden Ansprüche 1 bis 3, wobei die erste Fläche der Einsätze (5) konkav ist und die Enden (31, 32) der Laufrolle (3) konvex sind, oder die erste Fläche der Einsätze (5) konvex ist und die Enden der Laufrolle (3) konkav sind.
  5. Kolben (1) nach einem beliebigen der vorstehenden Ansprüche 1 bis 3, wobei die erste Fläche (51) der Einsätze (5) eben ist und die Enden (31, 32) der Laufrolle (3) konvex sind, oder die erste Fläche (51) der Einsätze (5) konvex ist und die Enden (31, 32) der Laufrolle (3) eben sind.
  6. Kolben (1) nach einem beliebigen der vorstehenden Ansprüche 1 bis 5, wobei die zweite Fläche (52) der Einsätze (5) eine Nut oder Rippe umfasst, die so konfiguriert ist, dass sie mit einer komplementären Nut oder Rippe zusammenwirkt, die sich auf dem Zylinder (2) befindet.
  7. Hydraulische Radialkolbenmaschine, umfassend zumindest einen Kolben (1) nach einem beliebigen der vorstehenden Ansprüche 1 bis 6.
EP17176083.8A 2016-06-16 2017-06-14 Kolben für eine hydraulische maschine mit radialen kolben mit begrenzter reibung Active EP3258100B1 (de)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR1655632A FR3052820B1 (fr) 2016-06-16 2016-06-16 Piston pour une machine hydraulique a pistons radiaux a frottements limites

Publications (2)

Publication Number Publication Date
EP3258100A1 EP3258100A1 (de) 2017-12-20
EP3258100B1 true EP3258100B1 (de) 2019-01-23

Family

ID=56611454

Family Applications (1)

Application Number Title Priority Date Filing Date
EP17176083.8A Active EP3258100B1 (de) 2016-06-16 2017-06-14 Kolben für eine hydraulische maschine mit radialen kolben mit begrenzter reibung

Country Status (2)

Country Link
EP (1) EP3258100B1 (de)
FR (1) FR3052820B1 (de)

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
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.
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
DE19810372A1 (de) * 1998-03-10 1999-09-16 Mannesmann Rexroth Ag Radialkolbenmotor mit Rollenführung
DE10205493B4 (de) * 2002-02-09 2004-05-06 Robert Bosch Gmbh Radialkolbenpumpe
DE102013218260A1 (de) * 2013-09-12 2015-03-12 Continental Automotive Gmbh Rollenstößel

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
None *

Also Published As

Publication number Publication date
FR3052820A1 (fr) 2017-12-22
EP3258100A1 (de) 2017-12-20
FR3052820B1 (fr) 2019-07-19

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