WO2008077675A1 - Palier à roulement pour une pompe à pistons radiaux - Google Patents

Palier à roulement pour une pompe à pistons radiaux Download PDF

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Publication number
WO2008077675A1
WO2008077675A1 PCT/EP2007/061963 EP2007061963W WO2008077675A1 WO 2008077675 A1 WO2008077675 A1 WO 2008077675A1 EP 2007061963 W EP2007061963 W EP 2007061963W WO 2008077675 A1 WO2008077675 A1 WO 2008077675A1
Authority
WO
WIPO (PCT)
Prior art keywords
bearing
piston pump
radial piston
rolling bearing
pump
Prior art date
Application number
PCT/EP2007/061963
Other languages
German (de)
English (en)
Inventor
Horst DÖPPLING
Alexander Zernickel
Thomas Fuchshuber
Heinrich Hofmann
Original Assignee
Schaeffler Kg
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 Schaeffler Kg filed Critical Schaeffler Kg
Publication of WO2008077675A1 publication Critical patent/WO2008077675A1/fr

Links

Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16C—SHAFTS; FLEXIBLE SHAFTS; ELEMENTS OR CRANKSHAFT MECHANISMS; ROTARY BODIES OTHER THAN GEARING ELEMENTS; BEARINGS
    • F16C33/00—Parts of bearings; Special methods for making bearings or parts thereof
    • F16C33/30—Parts of ball or roller bearings
    • F16C33/34—Rollers; Needles
    • F16C33/36—Rollers; Needles with bearing-surfaces other than cylindrical, e.g. tapered; with grooves in the bearing surfaces
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60T—VEHICLE BRAKE CONTROL SYSTEMS OR PARTS THEREOF; BRAKE CONTROL SYSTEMS OR PARTS THEREOF, IN GENERAL; ARRANGEMENT OF BRAKING ELEMENTS ON VEHICLES IN GENERAL; PORTABLE DEVICES FOR PREVENTING UNWANTED MOVEMENT OF VEHICLES; VEHICLE MODIFICATIONS TO FACILITATE COOLING OF BRAKES
    • B60T8/00—Arrangements for adjusting wheel-braking force to meet varying vehicular or ground-surface conditions, e.g. limiting or varying distribution of braking force
    • B60T8/32—Arrangements for adjusting wheel-braking force to meet varying vehicular or ground-surface conditions, e.g. limiting or varying distribution of braking force responsive to a speed condition, e.g. acceleration or deceleration
    • B60T8/34—Arrangements for adjusting wheel-braking force to meet varying vehicular or ground-surface conditions, e.g. limiting or varying distribution of braking force responsive to a speed condition, e.g. acceleration or deceleration having a fluid pressure regulator responsive to a speed condition
    • B60T8/40—Arrangements for adjusting wheel-braking force to meet varying vehicular or ground-surface conditions, e.g. limiting or varying distribution of braking force responsive to a speed condition, e.g. acceleration or deceleration having a fluid pressure regulator responsive to a speed condition comprising an additional fluid circuit including fluid pressurising means for modifying the pressure of the braking fluid, e.g. including wheel driven pumps for detecting a speed condition, or pumps which are controlled by means independent of the braking system
    • B60T8/4031—Pump units characterised by their construction or mounting
    • 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
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16C—SHAFTS; FLEXIBLE SHAFTS; ELEMENTS OR CRANKSHAFT MECHANISMS; ROTARY BODIES OTHER THAN GEARING ELEMENTS; BEARINGS
    • F16C19/00—Bearings with rolling contact, for exclusively rotary movement
    • F16C19/22—Bearings with rolling contact, for exclusively rotary movement with bearing rollers essentially of the same size in one or more circular rows, e.g. needle bearings
    • F16C19/24—Bearings with rolling contact, for exclusively rotary movement with bearing rollers essentially of the same size in one or more circular rows, e.g. needle bearings for radial load mainly
    • F16C19/26—Bearings with rolling contact, for exclusively rotary movement with bearing rollers essentially of the same size in one or more circular rows, e.g. needle bearings for radial load mainly with a single row of rollers
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16C—SHAFTS; FLEXIBLE SHAFTS; ELEMENTS OR CRANKSHAFT MECHANISMS; ROTARY BODIES OTHER THAN GEARING ELEMENTS; BEARINGS
    • F16C2360/00—Engines or pumps
    • F16C2360/42—Pumps with cylinders or pistons

Definitions

  • the invention relates to a rolling bearing for a radial piston pump with an inner ring and an outer ring and arranged between these bearing rings rolling elements.
  • roller bearing From German Patent No. 311 317 a roller bearing is known, represent the roles of the basic shape of a Umwindungsellipsoids symmetrically cut discs and roll on grooved outer and inner rings.
  • the rollers can advantageously be introduced into the bearing by being tilted between the races and then rotated into their working position. Since the roller circumference is spherical, this rotation can be done without resistance.
  • Such increased requirements may arise, for example, in that also other vehicle systems using a hydraulic pressure are to be supplied with the same pump.
  • vehicle systems may be, for example, a traction control system, an automatic distance control system acting on the service brakes of the vehicle, or a parking brake system.
  • the invention has for its object to use a rolling bearing in a radial piston pump, which has a comparatively long life, is suitable for high radial forces and can transmit axial forces to some extent.
  • the invention is based on the finding that a ball roller bearing with respect to a conventional ball bearing with otherwise the same dimensions has a larger lubricant space, which is therefore filled with a larger amount of lubricant. This provides a life extension with a relatively small axial space requirement in a radial piston pump. In addition, axial forces can also be transmitted to a certain extent by the ball rollers and these have a lower friction during operation than needle roller bearings.
  • the invention is therefore based on a rolling bearing for a radial piston pump with an inner ring and an outer ring and arranged between these bearing rings rolling elements.
  • the rolling bearing is designed as a ball roller bearing
  • the rolling elements are designed as ball rollers with two each deviating from a spherical base shape deviating and arranged parallel to each other side surfaces.
  • the inner ring has a centric or eccentric circumferential geometry, the entire rolling bearing being designed as an eccentric roller bearing.
  • the inner ring has a central or eccentric circumferential geometry on its inner circumference, or that the central inner ring is arranged on an eccentric shaft extension of a pump shaft.
  • the inner ring and the outer ring are provided with mutually facing guide rings made of a wear-resistant material whose pointing to the ball rollers sides are adapted to the spherical geometry of the ball rollers.
  • the guide rings have a high axial and radial load capacity.
  • the radial load capacity of the ball roller bearing is improved by the fact that osculation of up to 100% is possible, the point contact usual in conventional ball bearings being replaced by line contact in the ball roller bearing.
  • the use of the ball roller bearing according to the invention for supporting rotatable components of a pump is particularly favorable.
  • those pump embodiments are preferred which have at least one pump plunger, which rests radially on an eccentric pump shaft or on an eccentric shaft extension or on an outer ring of the ball roller bearing of the Radi alkolbenpumpe.
  • a second bearing is arranged axially opposite the ball roller bearing.
  • This second rolling bearing can also be a ball roller bearing or be designed as a needle bearing or cylindrical roller bearing, which is arranged, for example, centric to the pump shaft and eccentric to the eccentric shaft approach.
  • FIG. 1 shows an illustration of the ball roller bearing according to the invention in an axial section, arranged on an eccentric shaft extension of a radial piston pump
  • Figure 2 is a frontal plan view of the ball roller bearing
  • FIG. 3 shows a radial piston pump with a ball roller bearing according to FIG. 1 or FIG. 2.
  • the bearing assemblies shown in Figures 1 to 3 show a shaft 12 of a radial piston pump 5 with a shaft extension 11, the longitudinal axis 22 is aligned eccentrically to the longitudinal axis 16 of the shaft 12.
  • a ball roller bearing 1 On the shaft extension 11, a ball roller bearing 1 is arranged, with a firmly seated on the shaft extension 11 inner ring 2 and an outer ring 3, between which in raceways of the two bearing rings 2, 3 rolling ball rollers 4 are arranged and guided by a cage 23.
  • the ball rollers 4 each have two of the spherical shape deviating flattened and arranged parallel to each other side surfaces 6, 7, whereby over vollkugeligen rolling elements an axially enlarged lubricant chamber 10 is formed.
  • the larger lubricant reservoir compared to conventional ball bearings extends the service life of this rolling bearing.
  • FIG. 1 shows in the lower half, guide grooves 14 pointing radially towards each other are incorporated into the inner ring 2 and the outer ring 3, which form the raceways for the ball rollers 4 and therefore on their side facing the ball rollers 4 to the spherical geometry of the ball rollers 4 are adapted to achieve the greatest possible osculation between them.
  • the inner ring 2 is designed according to Figure 1 with a central opening 13 which is fixed to the eccentric shaft extension 11 of the shaft 12.
  • FIG. 2 shows an eccentric inner ring 2 with a different radial thickness over its circumference and a central opening 13 ', which is therefore eccentric to the outer circumference, with which it sits on a centric shaft extension 11.
  • the radial piston pump 5 for an anti-lock system comprises an electromotive drive 17 with a stator 15 fastened to the pump housing 24 and a rotor 18 mounted on a motor shaft 19.
  • the shaft extension 11 or the shaft 12 is rotatably connected to the motor shaft 19 or formed integrally therewith.
  • a shaft end 20 is formed centrally to the motor shaft 19 and the shaft 12, which is supported by a second bearing 21 in the pump housing 24.
  • This second bearing 21 is designed as a needle bearing.

Landscapes

  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Physics & Mathematics (AREA)
  • Fluid Mechanics (AREA)
  • Transportation (AREA)
  • Details Of Reciprocating Pumps (AREA)
  • Rolling Contact Bearings (AREA)

Abstract

L'invention concerne un palier à roulement pour une pompe à pistons radiaux (5), avec une bague intérieure (2) et une bague extérieure (3) ainsi qu'avec des éléments roulants disposés entre ces bagues. L'invention vise à fournir un palier à roulement pour une pompe à pistons radiaux qui présente une grande durée de vie, qui convienne pour des forces radiales élevées et qui puisse également absorber des forces axiales. A cet effet, le palier à roulement est réalisé sous forme de roulement (1) à rouleaux sphériques dont les éléments roulants sont réalisés sous la forme de rouleaux sphériques (4) pourvus chacun de deux faces latérales (6, 7) aplaties par rapport à une forme de base sphérique et disposées parallèlement entre elles.
PCT/EP2007/061963 2006-12-21 2007-11-07 Palier à roulement pour une pompe à pistons radiaux WO2008077675A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE102006060680A DE102006060680A1 (de) 2006-12-21 2006-12-21 Wälzlager für eine Radial-Kolbenpumpe
DE102006060680.9 2006-12-21

Publications (1)

Publication Number Publication Date
WO2008077675A1 true WO2008077675A1 (fr) 2008-07-03

Family

ID=38973021

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/EP2007/061963 WO2008077675A1 (fr) 2006-12-21 2007-11-07 Palier à roulement pour une pompe à pistons radiaux

Country Status (2)

Country Link
DE (1) DE102006060680A1 (fr)
WO (1) WO2008077675A1 (fr)

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102005061792A1 (de) * 2005-12-23 2007-07-05 Schaeffler Kg Radialwälzlager, insbesondere einreihiges Kugelrollenlager
DE102009032307A1 (de) * 2009-07-09 2011-01-13 Schaeffler Technologies Gmbh & Co. Kg Lagerung für eine Radial-Kolbenpumpe
DE102010042484A1 (de) * 2010-10-15 2012-04-19 Robert Bosch Gmbh Hochdruckpumpe für eine Kraftstoffeinspritzvorrichtung

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE311317C (fr)
DE4334195A1 (de) 1993-10-07 1994-03-24 Geuer Mann Ernst Radial-Wälzlager mit Kugelscheiben
DE19653895A1 (de) 1996-12-21 1998-06-25 Teves Gmbh Alfred Pumpe, insbesondere für eine hydraulische Bremsschlupfregelanlage
DE19958927C1 (de) 1999-12-07 2001-06-13 Lucas Varity Gmbh Fahrzeugbremsanlage mit einer Motor-/Pumpeneinheit und einem Aggregat
DE10322229A1 (de) * 2003-05-17 2004-12-02 Ina-Schaeffler Kg Spannvorrichtung für einen Zugmitteltrieb
DE102005014556A1 (de) * 2005-03-31 2006-10-05 Schaeffler Kg Radialwälzlager, insbesondere einreihiges Rillenkugellager

Family Cites Families (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2413691B2 (de) * 1974-03-21 1976-04-29 Druckoelpumpe
DE2436321A1 (de) * 1974-07-27 1976-02-12 Langen & Co Hydraulische doppelpumpe
SE440817B (sv) * 1978-07-26 1985-08-19 Ingo H Friedrichs Rengoringsaggregat
DE3839689C2 (de) * 1988-11-24 1998-03-19 Rudolf Pickel Baukastenartig aufbaubares, elektromotorisch angetriebenes hydraulisches Pumpenaggregat
DE4315826C5 (de) * 1993-05-12 2012-04-05 Continental Teves Ag & Co. Ohg Motor-Pumpen-Aggregat
DE29519941U1 (de) * 1995-12-15 1997-04-17 Wagner Paul Heinz Hydraulisches Pumpenaggregat
DE10140918A1 (de) * 2001-05-28 2002-12-05 Continental Teves Ag & Co Ohg Motor-Pumpen-Aggregat, insbesondere für ein Kraftfahrzeugbremssystem
JP2003028050A (ja) * 2001-07-11 2003-01-29 Nissin Kogyo Co Ltd プランジャポンプ
JP2003028051A (ja) * 2001-07-11 2003-01-29 Nissin Kogyo Co Ltd プランジャポンプ
DE102004045438B3 (de) * 2004-09-18 2006-06-01 Ab Skf Verfahren zur Herstellung eines Lagerrings
DE102004061812A1 (de) * 2004-12-22 2006-07-06 Robert Bosch Gmbh Antriebsvorrichtung

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE311317C (fr)
DE4334195A1 (de) 1993-10-07 1994-03-24 Geuer Mann Ernst Radial-Wälzlager mit Kugelscheiben
DE19653895A1 (de) 1996-12-21 1998-06-25 Teves Gmbh Alfred Pumpe, insbesondere für eine hydraulische Bremsschlupfregelanlage
DE19958927C1 (de) 1999-12-07 2001-06-13 Lucas Varity Gmbh Fahrzeugbremsanlage mit einer Motor-/Pumpeneinheit und einem Aggregat
DE10322229A1 (de) * 2003-05-17 2004-12-02 Ina-Schaeffler Kg Spannvorrichtung für einen Zugmitteltrieb
DE102005014556A1 (de) * 2005-03-31 2006-10-05 Schaeffler Kg Radialwälzlager, insbesondere einreihiges Rillenkugellager

Also Published As

Publication number Publication date
DE102006060680A1 (de) 2008-06-26

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