FR2566486A1 - Two-part double-row ball bearing - Google Patents

Two-part double-row ball bearing Download PDF

Info

Publication number
FR2566486A1
FR2566486A1 FR8509324A FR8509324A FR2566486A1 FR 2566486 A1 FR2566486 A1 FR 2566486A1 FR 8509324 A FR8509324 A FR 8509324A FR 8509324 A FR8509324 A FR 8509324A FR 2566486 A1 FR2566486 A1 FR 2566486A1
Authority
FR
France
Prior art keywords
bearing
quenching
rolling
rows
radial
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
FR8509324A
Other languages
French (fr)
Other versions
FR2566486B1 (en
Inventor
Arnim Ferstera
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.)
Fried Krupp AG Hoesch Krupp
Original Assignee
Hoesch AG
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 Hoesch AG filed Critical Hoesch AG
Publication of FR2566486A1 publication Critical patent/FR2566486A1/en
Application granted granted Critical
Publication of FR2566486B1 publication Critical patent/FR2566486B1/en
Expired legal-status Critical Current

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
    • F16C33/58—Raceways; Race rings
    • F16C33/583—Details of specific parts of races
    • F16C33/585—Details of specific parts of races of raceways, e.g. ribs to guide the rollers
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B66—HOISTING; LIFTING; HAULING
    • B66C—CRANES; LOAD-ENGAGING ELEMENTS OR DEVICES FOR CRANES, CAPSTANS, WINCHES, OR TACKLES
    • B66C23/00—Cranes comprising essentially a beam, boom, or triangular structure acting as a cantilever and mounted for translatory of swinging movements in vertical or horizontal planes or a combination of such movements, e.g. jib-cranes, derricks, tower cranes
    • B66C23/62—Constructional features or details
    • B66C23/84—Slewing gear
    • E—FIXED CONSTRUCTIONS
    • E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
    • E02F—DREDGING; SOIL-SHIFTING
    • E02F9/00—Component parts of dredgers or soil-shifting machines, not restricted to one of the kinds covered by groups E02F3/00 - E02F7/00
    • E02F9/08—Superstructures; Supports for superstructures
    • E02F9/10—Supports for movable superstructures mounted on travelling or walking gears or on other superstructures
    • E02F9/12—Slewing or traversing gears
    • E02F9/121—Turntables, i.e. structure rotatable about 360°
    • 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
    • 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
    • F16C19/34—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 both radial and axial load
    • F16C19/38—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 both radial and axial load with two or more rows 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
    • 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
    • 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
    • F16C2350/00—Machines or articles related to building
    • F16C2350/26—Excavators

Landscapes

  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Mining & Mineral Resources (AREA)
  • Civil Engineering (AREA)
  • Structural Engineering (AREA)
  • Rolling Contact Bearings (AREA)

Abstract

The two-part double-row ball- or roller bearing is designed to withstand radial loads. It has surface-hardened running faces in the races. Each race (2,3) has a hardened zone (12) extending over both running faces (10) and the shoulder (11) joining them together. This can be hardened to a greater depth at the faces than at the shoulder.

Description

PALiER A ROULEMEINT RADIAL E: DEUX PARTIES ET EN DEUXRADIAL ROLLER BEARING E: TWO PARTS AND TWO

RANGEES.ROWS.

L'invention concerne un palier à roulement radial en deux parties et en deux rangées comportant, sur ses couronnes, des voies de roulement durcies en surface. En ce qui concerne de tels paliers, il s'agit de  The invention relates to a radial rolling bearing in two parts and in two rows comprising, on its crowns, surface hardened rolling tracks. With regard to such bearings, these are:

couronnes d'orientation sans partie centrale.  slewing rings without central part.

Contrairement aux paliers dont le diamètre va jusqu'à 300 mm, dont les couronnes sont complètement durcies, les couronnes d'orientation ne peuvent, par suite de leurs dimensions, être durcies que superficiellement dans la zone des voies de roulement. De telles couronnes d'orientation, qui sont réalisées sous forme de paliers à roulements radiaux en deux parties et en deux rangées, sont utilisées, par exemple, comme assemblage rotatif entre la partie supérieure rotative et la partie  Unlike bearings up to 300 mm in diameter, the crowns of which are completely hardened, the slewing rings can only be hardened in the area of the raceways due to their size. Such slewing rings, which are produced in the form of radial rolling bearings in two parts and in two rows, are used, for example, as a rotary assembly between the rotary upper part and the part

inférieure fixe dans les excavateurs ou les grues.  lower fixed in excavators or cranes.

Comme formes de montage du type de palier de la présente invention, le brevet des Etats-Unis d'Amérique 3.814.488 illustre, dans les figures 1 à 3, des paliers à billes radiaux en deux parties et en deux rangées et, dans les figures 4 à 7, des paliers à rouleaux croisés radiaux en deux parties et en deux rangées. Les voies de roulement des couronnes de paliers individuelles sont durcies superficiellement et l'une aprRs l'autre moyennant un chauffage par induction ou un chauffage au moyen de la flamme d'un brûleur avec trempe ultérieure. Dans ce type de durcissement, l'action de la chaleur influence, lors du durcissement de la deuxième voie de roulement, la qualité du durcissement de la première voie de roulement. Par suite du durcissement de la deuxième voie de roulement, il peut se former des tapures de trempe dans la première voie de roulement. En outre,-la couronne de palier peut gauchir, ce qui a ultérieurement une influence défavorable sur la précision de roulement de toute la couronne d'orientation. Afin d'éviter autant que possible cet inconvénient, la couche de trempe n'est formée que sur une faible profondeur. De ce fai>, il faut un faible apport de chaleur. Toutefois, cette faible profondeur de trempe exerce un *effet désavantageux sur l'aptitude du palier à subir des sollicitations, ainsi que sur sa durée de vie. Ce n'est que par une profondeur de trempe d'environ 3 à 5 mm que l'on obtient une aptitude à la  As mounting forms of the bearing type of the present invention, U.S. Patent 3,814,488 illustrates, in Figures 1 to 3, two-part, two-row radial ball bearings and, in the Figures 4 to 7, radial crossed roller bearings in two parts and in two rows. The tracks of the individual bearing crowns are surface hardened and one after the other by means of induction heating or heating by means of the flame of a burner with subsequent quenching. In this type of hardening, the action of heat influences, during the hardening of the second track, the quality of the hardening of the first track. As a result of the hardening of the second track, quenching nipples may form in the first track. In addition, the bearing crown can warp, which subsequently has an unfavorable influence on the rolling precision of the entire slewing ring. In order to avoid this drawback as much as possible, the quench layer is formed only over a shallow depth. This fact> requires a small amount of heat. However, this shallow quenching depth has a disadvantageous effect on the ability of the bearing to be subjected to stresses, as well as on its service life. It is only by a quenching depth of approximately 3 to 5 mm that one obtains a suitability for

sollicitation et une durée de vie optimales du palier.  optimum stress and long service life of the bearing.

En conséquence, l'objet à la base de l'invention est de réaliser des couronnes d'orientation du type décrit, en particulier, de façon à obtenir, moyennant une plus grande profondeur de trempe, une plus haute aptitude à la sollicitation conjointement avec une plus longue  Consequently, the object on which the invention is based is to produce slewing rings of the type described, in particular, so as to obtain, with a greater depth of quenching, a higher aptitude for stressing together with a longer

durée de vie.lifetime.

Selon l'invention, on réalise cet objet du fait que chaque couronne de roulement est réalisée avec une zone de trempe qui s'étend sur les deux voies de roulement  According to the invention, this object is achieved by the fact that each rolling crown is produced with a quenching zone which extends over the two rolling tracks

et l'épaulement d'assemblage entre ces dernières.  and the assembly shoulder therebetween.

Dans une autre forme de réalisation de l'invention, la zone de trempe se trouvant dans la zone des voies de roulement a une plus grande profondeur de  In another embodiment of the invention, the quenching zone located in the region of the raceways has a greater depth of

trempe que sur l'épaulement d'assemblage.  quenching only on the assembly shoulder.

Ce n'est que grâce à la solution selon l'invention que les différentes zones de trempe des deux zones des voies de roulement n'exercent aucune influence négative l'une sur l'autre. De la sorte, il est possible de prévoir une épaisseur de trempe suffisante. De même, grâce à la trempe simultanée des deux voies de roulement, on évite le gauchissement des couronnes de palier. De même, de façon étonnante, les voies de roulement peuvent être plus rapprochées, car, pour des raisons techniques de trempe, il n'est plus nécessaire de prévoir un écartement de sécurité entre les voies de roulement. De la sorte, on obtient une plus faible hauteur de montage des paliers, ce qui implique non seulement une plus faible consommation de matière, mais également une meilleure transmission des forces entre les éléments de montage assemblés l'un à l'autre de-manière rotative par  It is only thanks to the solution according to the invention that the different quenching zones of the two zones of the rolling tracks have no negative influence on each other. In this way, it is possible to provide a sufficient quench thickness. Likewise, thanks to the simultaneous quenching of the two rolling tracks, warping of the bearing crowns is avoided. Likewise, surprisingly, the tracks can be brought closer together, because, for technical reasons of hardening, it is no longer necessary to provide a safety distance between the tracks. In this way, a lower mounting height of the bearings is obtained, which implies not only a lower consumption of material, but also a better transmission of forces between the mounting elements assembled to each other in a manner rotary by

le palier.the landing.

Un exemple de réalisation de l'invention sera décrit ci-après plus en détail en se référant aux dessins annexés dans lesquels: La figure 1 est une coupe d'une moitié du palier selon l'invention, monté sous forme d'un palier à billes radial en deux parties et en deux rangées; et La figure 2 est une coupe de la moitié d'un palier à rouleaux croisés radial de ce type, en deux parties et  An exemplary embodiment of the invention will be described below in more detail with reference to the accompanying drawings in which: FIG. 1 is a section through one half of the bearing according to the invention, mounted in the form of a bearing with radial balls in two parts and in two rows; and FIG. 2 is a section through half of a radial crossed roller bearing of this type, in two parts and

en deux rangées. -in two rows. -

Le palier selon la figure 1 est constitué d'une couronne extérieure 2 et d'une couronne intérieure 3 qui sont assemblées l'une à l'autre de manière rotative par une rangée supérieure de billes 4 et par une rangée inférieure de billes 5. Les deux rangées de billes sont réalisées sous forme de rangées de billes radiales et elles sont sollicitées simultanément. La couronne intérieure 3-est vissée à la structure inférieure fixe 6 au moyen de vis de fixation 7, tandis que la couronne extérieure 2 est vissée à la structure supérieure rotative 9 à l'aide de vis de retenue 8. Chaque couronne de palier 2, 3 est réalisée avec une zone de trempe 12 qui s'étend sur les deux voies de roulement 10 des deux rangées de billes 4, 5, ainsi que sur l'épaulement d'assemblage 11 situé entre ces dernières. En l'occurrence, il est prévu que la zone de trempe a une plus grande profondeur dans la zone de la voie de roulement 10 qu'à l'épaulemenet d'assemblage 11. La zone des voies de roulement est remplie de la manière habituelle de graisse ou d'huile, et elle est étanchée visà-vis de l'espace extérieur au moyen  The bearing according to FIG. 1 consists of an outer ring 2 and an inner ring 3 which are rotatably joined to each other by an upper row of balls 4 and by a lower row of balls 5. The two rows of balls are produced in the form of rows of radial balls and they are stressed simultaneously. The inner crown 3 is screwed to the fixed lower structure 6 by means of fixing screws 7, while the outer crown 2 is screwed to the rotary upper structure 9 using retaining screws 8. Each bearing crown 2 , 3 is produced with a quenching zone 12 which extends over the two rolling tracks 10 of the two rows of balls 4, 5, as well as on the assembly shoulder 11 situated between the latter. In this case, provision is made for the quenching zone to have a greater depth in the region of the raceway 10 than to the assembly shoulder 11. The region of the raceways is filled in the usual way grease or oil, and it is sealed off from the outside space by means of

de joints 13.of seals 13.

La figure 2 illustre un palier à roulement de même nature qu'en figure 1, mais dans ce cas, comme corps de roulement, on utilise des rouleaux qui sont alternativement décalés l'un de l'autre de 90 . Dès lors, il s'agit d'un palier radial à rouleaux croisés en deux parties et en deux rangées. Contrairement à la figure 1, ce palier comporte dès lors une rangée supérieure de rouleaux 14 et une rangée inférieure de rouleaux 15. Toutefois, de la même manière, il est prévu que chaque couronne de palier est réalisée avec une zone de trempe 17 qui s'étend sur les deux voies de roulement 16 et l'épaulement d'assemblage 11 disposé entre elles. En outre, il est à nouveau prévu que la zone de trempe a, dans la zone de la voie de roulement 16, une profondeur de  FIG. 2 illustrates a rolling bearing of the same kind as in FIG. 1, but in this case, as the rolling body, rollers are used which are alternately offset from one another by 90. It is therefore a radial bearing with rollers crossed in two parts and in two rows. Unlike FIG. 1, this bearing therefore comprises an upper row of rollers 14 and a lower row of rollers 15. However, in the same way, it is provided that each bearing crown is produced with a quenching zone 17 which s 'extends over the two rolling tracks 16 and the assembly shoulder 11 disposed between them. Furthermore, it is again provided that the quenching zone has, in the region of the track 16, a depth of

trempe plus grande que sur l'épaulement d'assemblage 11.  larger quenching than on the assembly shoulder 11.

Claims (2)

REVENDICATIONS 1. Palier à roulement radial en deux parties et en deux rangées comportant, sur ses couronnes, des voies de roulement durcies en surface, caractérisé en ce que chaque couronne de roulement (2, 3) est réalisée avec une zone de trempe (12,. 17) qui s'étend sur les deux voies de roulement (10, 16) et l'épaulement d'assemblage (11) situé  1. Radial rolling bearing in two parts and in two rows comprising, on its crowns, surface hardened rolling tracks, characterized in that each rolling crown (2, 3) is produced with a quenching zone (12, .17) which extends over the two rolling tracks (10, 16) and the assembly shoulder (11) located entre ces dernières.between these. 2. Palier à roulement radial en deux parties et en deux rangées selon la revendication 1, caractérisé en ce que la zone de trempe (12, 17) a, dans la zone des voies de roulement (10, 16), une plus grande profondeur de  2. Radial roller bearing in two parts and in two rows according to claim 1, characterized in that the quenching zone (12, 17) has, in the region of the raceways (10, 16), a greater depth of trempe que sur l'épaulement d'assemblage (11).  quenching only on the assembly shoulder (11).
FR8509324A 1984-06-26 1985-06-19 RADIAL ROLLING BEARING IN TWO PARTS AND TWO ROWS Expired FR2566486B1 (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE3423433A DE3423433C2 (en) 1984-06-26 1984-06-26 Double-row, center-free slewing bearing

Publications (2)

Publication Number Publication Date
FR2566486A1 true FR2566486A1 (en) 1985-12-27
FR2566486B1 FR2566486B1 (en) 1988-11-10

Family

ID=6239122

Family Applications (1)

Application Number Title Priority Date Filing Date
FR8509324A Expired FR2566486B1 (en) 1984-06-26 1985-06-19 RADIAL ROLLING BEARING IN TWO PARTS AND TWO ROWS

Country Status (3)

Country Link
DE (1) DE3423433C2 (en)
FR (1) FR2566486B1 (en)
IT (1) IT1184643B (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0238725A2 (en) * 1986-03-22 1987-09-30 Hoesch Aktiengesellschaft Large-size rolling bearing

Families Citing this family (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4906113A (en) * 1988-07-27 1990-03-06 Quintette Coal Limited Slew ring bearing
JP2529597Y2 (en) * 1989-07-13 1997-03-19 日本精工株式会社 Bearing unit for wheels
TW550350B (en) * 2001-12-11 2003-09-01 Harmonic Drive Systems Multistage cross roller bearing
DE102005063678B3 (en) 2005-06-06 2020-01-23 Imo Momentenlager Gmbh Method for operating a wind turbine with a bearing unit for an elongated rotor blade
DE102005026141B4 (en) 2005-06-06 2019-07-25 Imo Momentenlager Gmbh Wind turbine with a bearing unit for an elongated rotor blade
CN102720766A (en) * 2012-07-02 2012-10-10 北京京冶轧机轴承制造有限公司 Turntable bearing

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR504894A (en) * 1918-08-01 1920-07-19 C Motors Ltd Ab Improvements to roller or ball bearings
LU76260A1 (en) * 1976-11-25 1977-05-24

Family Cites Families (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3814488A (en) * 1973-03-26 1974-06-04 Keene Corp Bearing assembly

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR504894A (en) * 1918-08-01 1920-07-19 C Motors Ltd Ab Improvements to roller or ball bearings
LU76260A1 (en) * 1976-11-25 1977-05-24

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0238725A2 (en) * 1986-03-22 1987-09-30 Hoesch Aktiengesellschaft Large-size rolling bearing
EP0238725A3 (en) * 1986-03-22 1988-01-20 Hoesch Aktiengesellschaft Large-size rolling bearing

Also Published As

Publication number Publication date
IT8521291A0 (en) 1985-06-26
DE3423433C2 (en) 1986-05-22
IT1184643B (en) 1987-10-28
DE3423433A1 (en) 1986-01-02
FR2566486B1 (en) 1988-11-10

Similar Documents

Publication Publication Date Title
US5037214A (en) Double row tapered roller bearing assembly
EP0959258B1 (en) Sealing arrangement for a roller contact bearing
US20110229312A1 (en) Rolling bearing assembly and wind turbine equipped therewith
WO1990007310A1 (en) Improved hip prosthesis
FR2566486A1 (en) Two-part double-row ball bearing
WO2022016832A1 (en) Self-aligning roller bearing for axial or radial eccentric loading operation conditions, and heat treatment process
US4865472A (en) Double row roller bearing
JPH02190609A (en) Radial thrust compound bearing
FI83994B (en) STORVALSLAGER.
FR2784147A1 (en) WHEEL SUPPORT DEVICE
US5176456A (en) Rolling bearing
FR2859256A1 (en) CROWN OF ORIENTATION
FR2493436A1 (en) TRUCK HOUSING IN A FORK EYE OF A CARDAN JOINT BY MEANS OF A CYLINDRICAL ROLLER BEARING
EP0806582A3 (en) Clutch release bearing with a cage with axial retention
US3733109A (en) Rolling bearing, e.g. taper roller bearing
JPH0434212A (en) Double row tapered roller bearing with vertex of contact angles inside of bearing
ES2246952T3 (en) LABYRINTH BOARD FOR AN ARTICULATION CRUISE TREE.
FR2790801A1 (en) ROLLING BEARING WITH SEALS AND METHOD FOR FIXING SEALS ON A BEARING
FR2516994A1 (en) BEARING FOR LONGITUDINAL MOVEMENTS
FR2563875A1 (en) Engine flywheel bearing
CN107795586A (en) Bearing assembly
FR2686381A1 (en) Idling roller with tapered (conical) rolling elements
FR2588927A1 (en) Double row self-aligning roller bearing
RU2276292C1 (en) Thrust bearing with taper rollers and floating side
JPS5919131Y2 (en) Preload device for open type linear bearings