WO2009013048A2 - Connexion rotative de palier à roulement - Google Patents

Connexion rotative de palier à roulement Download PDF

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Publication number
WO2009013048A2
WO2009013048A2 PCT/EP2008/056543 EP2008056543W WO2009013048A2 WO 2009013048 A2 WO2009013048 A2 WO 2009013048A2 EP 2008056543 W EP2008056543 W EP 2008056543W WO 2009013048 A2 WO2009013048 A2 WO 2009013048A2
Authority
WO
WIPO (PCT)
Prior art keywords
bearing
ring
rolling bearing
rolling
support ring
Prior art date
Application number
PCT/EP2008/056543
Other languages
German (de)
English (en)
Other versions
WO2009013048A3 (fr
Inventor
Christian Nuissl
Jürgen Stölzle
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 WO2009013048A2 publication Critical patent/WO2009013048A2/fr
Publication of WO2009013048A3 publication Critical patent/WO2009013048A3/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
    • F16C19/00—Bearings with rolling contact, for exclusively rotary movement
    • F16C19/02—Bearings with rolling contact, for exclusively rotary movement with bearing balls essentially of the same size in one or more circular rows
    • F16C19/14—Bearings with rolling contact, for exclusively rotary movement with bearing balls essentially of the same size in one or more circular rows for both radial and axial load
    • F16C19/18—Bearings with rolling contact, for exclusively rotary movement with bearing balls essentially of the same size in one or more circular rows for both radial and axial load with two or more rows of balls
    • F16C19/181—Bearings with rolling contact, for exclusively rotary movement with bearing balls essentially of the same size in one or more circular rows for both radial and axial load with two or more rows of balls with angular contact
    • F16C19/183—Bearings with rolling contact, for exclusively rotary movement with bearing balls essentially of the same size in one or more circular rows for both radial and axial load with two or more rows of balls with angular contact with two rows at opposite angles
    • F16C19/184—Bearings with rolling contact, for exclusively rotary movement with bearing balls essentially of the same size in one or more circular rows for both radial and axial load with two or more rows of balls with angular contact with two rows at opposite angles in O-arrangement
    • 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
    • F16C25/00—Bearings for exclusively rotary movement adjustable for wear or play
    • F16C25/06—Ball or roller bearings
    • 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
    • F16C33/58—Raceways; Race rings
    • F16C33/60—Raceways; Race rings divided or split, e.g. comprising two juxtaposed rings
    • 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
    • F16C33/58—Raceways; Race rings
    • F16C33/62—Selection of substances
    • 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
    • F16C2226/00—Joining parts; Fastening; Assembling or mounting parts
    • F16C2226/50—Positive connections
    • F16C2226/60—Positive connections with threaded parts, e.g. bolt and nut connections
    • 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
    • F16C2300/00—Application independent of particular apparatuses
    • F16C2300/10—Application independent of particular apparatuses related to size
    • F16C2300/14—Large applications, e.g. bearings having an inner diameter exceeding 500 mm

Definitions

  • the invention relates to a rolling bearing rotary joint, consisting of two concentric nested support rings, which receive between them a rolling bearing whose rolling elements unrolled on corresponding raceways shaped, received by the support rings bearing shells, wherein a support ring is formed in two parts.
  • Such bearings rotary joints are already known. According to the textbook “Die Wälzlagerpraxis”, vernier suverlage GmbH, Mainz 1995, such bearings rotary joints are used as a pivot bearing for the support of excavators, cranes or in vehicle for articulated buses and trams, ie, in applications in which in a limited space high loads Such rotary joints can absorb axial forces, radial forces and tilting moments, and such rotary joints are also used in military technology, in robot construction and also in medical technology.
  • ceiling supply units (ceiling stands) are used primarily in the operating room and intensive care units. These are supplied exclusively with electrical energy, various gases and data lines from the ceiling.
  • the ceiling-mounted workstations on the one hand allow a flexible room design, on the other hand, hygiene and occupational safety are improved because cables and hoses are not on the ground lie.
  • the ceiling tripods move devices of all kinds such as anesthesia devices, surgical instruments, heart-lung machine and monitors quickly and easily.
  • the allowable load bearing capacities and internal cross sections in the arms and spherical bearings of the ceiling stands have been increased accordingly. A significant technical contribution has been made in pairs prestressed angular needle bearings.
  • the rolling bearing rotary joint shown in Figure 3 of this prior publication consists of an inner support ring and an outer support ring and disposed therebetween Axialschrägnadellagern.
  • the inner support ring is provided with a projection pointing radially outwards, which forms contact surfaces for the two axial angular needle bearings.
  • the outer support ring is provided on its inside with a non-designated recess which extends at its upper end obliquely to the axis of rotation of the rotary joint and which forms the other contact surface for one of the two Axialschrägnadellager.
  • the two Axialschrägnadellager have corresponding pulleys, which are received by the support rings.
  • the bias voltage is adjusted such that in one of the support rings a screwed collar the needle bearings moved towards each other and so makes the bias adjustable.
  • the object of the invention is therefore to provide a roller bearing slewing connection which can be used advantageously, in particular, in dynamic applications and which has a greater support width.
  • this object is achieved by the characterizing part of claim 1 in conjunction with the preamble thereof, characterized in that the rolling bearing is designed as a double row angular contact ball bearing, the bearing balls are placed to each other in O arrangement.
  • the bearing shell of each support ring is formed in two parts and has an essentially S-shaped configuration. Due to the two-part design, the geometric shape is simplified, so that consequently the production is much easier.
  • both the bearing shells of the inner and the outer support ring have a same geometric shape. As a result, each one of the four Bearing shells can be used at any point both in the inner and in the outer support ring, so that only a tool for the preparation of the bearing shell is needed and thus the cost can be kept much lower.
  • the outer support ring has a radially inwardly directed projection which serves as a bearing surface for the bearing shells. This safe contact surface is particularly important for adjusting the bearing preload.
  • bearing balls are either full or arranged in a cage depending on the prevailing load conditions.
  • the inner support ring is formed in two parts, wherein in the region of one of the angular contact ball bearings, a collar is arranged on the inner support ring, which is used as Ania- ge specifications for serves this part of the angular contact ball bearing and is displaceable in the axial direction.
  • a different axial position of this ring can therefore be acted upon in a simple manner to the bias by the two ball bearing rows toward each other or moved away from each other.
  • the inner support ring and the adjusting ring are connected to each other via associated threads, because in this way a special simple adjustment of the bearing preload is possible.
  • the bearing shells are subjected to a hardening process and support rings and bearing shells are made of different materials.
  • the life of the rolling bearing slewing connection is increased with a simultaneously increased load bearing.
  • the production of different Materials ensures that such a rolling bearing slewing with high stability has a low weight.
  • the support rings consist of a non-ferrous metal, for example of an aluminum alloy, or of a plastic.
  • Figure 4 shows two bearing shells including associated bearing balls in longitudinal section and
  • Figure 5 is an enlarged view of the bearing shells.
  • the roller bearing rotary joint shown in Figures 1 to 5 and designated 1 consists of the two concentric about the bearing axis 4 arranged support rings, wherein the outer support ring with 2 and the inner support ring is designated 3. Between two support rings 2, 3, a double-row angular contact ball bearing 5 is arranged, the bearing balls 6, 7 are either full complement or housed in the cages 8, 9. The rows of balls 6, 7 are set to each other in an O arrangement, ie, the ball pressure lines 20, 21 extend obliquely radially from outside to inside and intersect the bearing axis 4 in the points 22, 23 at the angle ⁇ . Depending on the prevailing load conditions, the pressure angle ⁇ is variable, whereby it will increase with increasing radial forces.
  • the ball races 6, 7 include the bearing shells 1 1, 12, 13, 14, which form the raceways for the bearing balls 6, 7 and are received by the outer support ring 2 and the inner support ring 3.
  • the system of the bearing shells 1 1, 12 is realized by the radially inwardly directed projection 10, while the bearing shells 13, 14 abut the right side of the adjusting ring 15 and the left side of the shoulder 24 of the inner support ring 3.
  • the adjusting ring 15 is screwed on its internal thread 16 on the external thread 17 of the inner support ring 3 and so displaced in the axial direction. In this way, the bearing preload can be easily adjusted.
  • both support rings 2, 3 still axially aligned, evenly spaced in the circumferential direction spaced mounting holes 18, 19, which are used for connection with connection structures, not shown.
  • the bearing shells 11, 12, 13, 14 are configured in an S shape and have the same geometric shape.
  • the inclined sections 25, 26 according to FIG. 5, which merge into the axially aligned sections 27, 28, 29, 30 at the radially lower and the radially upper end, on the one hand have the same inclination to the bearing axis 4.
  • the axially extending portions 27, 29, 28, 30 on the same radial distance from the bearing axis 4.
  • the bearing shells 1 1, 12, 13, 14 of the double-row angular contact ball bearing 5 are made of a non-alloy insert steel. They are subjected after their completion to increase the hardness, and thus to increase the life, a heat treatment.
  • the bearing cages 8, 9 are made of a polyamide, which has a high hardness and is particularly stiff in heat, abrasion resistant and dimensionally stable. An additional increase in strength is achieved by the addition of glass fibers.
  • the bearing shells 1 1, 12, 13, 14 and the support rings 2, 3 consist of different materials. Thus, it has proved to be advantageous to manufacture the latter from a plastic or from a non-ferrous metal.
  • Aluminum alloys in particular aluminum alloys, are particularly advantageous in this context, since they can be processed in a simple manner by forming. Even small additions of the alloying elements such as magnesium, silicon, copper, zinc, nickel and manganese change very strongly the properties of pure aluminum. In particular, hardness and strength are increased, while the formability decreases only very slightly. Such wrought alloys show a high ductility and are particularly suitable because of their high strength and low density as a lightweight material.

Landscapes

  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Rolling Contact Bearings (AREA)

Abstract

L'invention concerne une connexion rotative de palier à roulement (1) composée de deux bagues porteuses (2, 3) disposées l'une dans l'autre de façon concentrique autour d'un axe de palier (4), un palier à roulement étant reçu entre les bagues porteuses. Les corps de roulement du palier roulent sur des voies de roulement correspondantes de coquilles de palier formées sans enlèvement de copeaux, reçues par les bagues porteuses (2, 3), une bague porteuse (2, 3) étant conçue en deux parties. Selon l'invention, le palier à roulement est conçu en tant que roulement à billes à portée oblique à double rangée (5), dont les billes (6, 7) sont disposées en O les unes par rapport aux autres.
PCT/EP2008/056543 2007-07-25 2008-05-28 Connexion rotative de palier à roulement WO2009013048A2 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE102007034501.3 2007-07-25
DE200710034501 DE102007034501A1 (de) 2007-07-25 2007-07-25 Wälzlager-Drehverbindung

Publications (2)

Publication Number Publication Date
WO2009013048A2 true WO2009013048A2 (fr) 2009-01-29
WO2009013048A3 WO2009013048A3 (fr) 2009-05-07

Family

ID=40057064

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/EP2008/056543 WO2009013048A2 (fr) 2007-07-25 2008-05-28 Connexion rotative de palier à roulement

Country Status (2)

Country Link
DE (1) DE102007034501A1 (fr)
WO (1) WO2009013048A2 (fr)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US10300740B2 (en) 2014-07-30 2019-05-28 Honeywell International Inc. Wheel hub bearing bore

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102010021813B4 (de) * 2010-05-27 2012-05-31 Schaeffler Technologies Gmbh & Co. Kg Stoßfestes Schrägkugellager
FR2971028B1 (fr) * 2011-02-02 2014-01-17 Skf Ab Palier a roulement pour dispositif de galet tendeur de courroie
DE102015221407A1 (de) * 2015-11-02 2016-12-22 Schaeffler Technologies AG & Co. KG Lageranordnung für eine Ritzelwelle

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB191327918A (en) * 1913-12-04 1914-08-13 Edward Williams Improvements relating to Ball Bearings.
US1286505A (en) * 1918-05-27 1918-12-03 Frank Beemer Annular ball-bearing.
GB2097869A (en) * 1981-04-30 1982-11-10 Skf Kugellagerfabriken Gmbh Method of making race rings by pairs for rolling bearings
DE19803929A1 (de) * 1998-02-02 1999-08-05 Schaeffler Waelzlager Ohg Wälzlager-Drehverbindung
DE102004003654A1 (de) * 2004-01-24 2005-08-11 Ina-Schaeffler Kg Lagerung einer Laufrolle
WO2007075386A2 (fr) * 2005-12-22 2007-07-05 The Timken Company Extremite de roue a chemins de roulement emboutis

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB191327918A (en) * 1913-12-04 1914-08-13 Edward Williams Improvements relating to Ball Bearings.
US1286505A (en) * 1918-05-27 1918-12-03 Frank Beemer Annular ball-bearing.
GB2097869A (en) * 1981-04-30 1982-11-10 Skf Kugellagerfabriken Gmbh Method of making race rings by pairs for rolling bearings
DE19803929A1 (de) * 1998-02-02 1999-08-05 Schaeffler Waelzlager Ohg Wälzlager-Drehverbindung
DE102004003654A1 (de) * 2004-01-24 2005-08-11 Ina-Schaeffler Kg Lagerung einer Laufrolle
WO2007075386A2 (fr) * 2005-12-22 2007-07-05 The Timken Company Extremite de roue a chemins de roulement emboutis

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US10300740B2 (en) 2014-07-30 2019-05-28 Honeywell International Inc. Wheel hub bearing bore

Also Published As

Publication number Publication date
WO2009013048A3 (fr) 2009-05-07
DE102007034501A1 (de) 2009-01-29

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