EP2847481A1 - Segment de cage d'un roulement à rouleaux coniques et roulement à rouleaux coniques - Google Patents

Segment de cage d'un roulement à rouleaux coniques et roulement à rouleaux coniques

Info

Publication number
EP2847481A1
EP2847481A1 EP13719288.6A EP13719288A EP2847481A1 EP 2847481 A1 EP2847481 A1 EP 2847481A1 EP 13719288 A EP13719288 A EP 13719288A EP 2847481 A1 EP2847481 A1 EP 2847481A1
Authority
EP
European Patent Office
Prior art keywords
positioning aid
cage
tapered roller
webs
roller 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.)
Withdrawn
Application number
EP13719288.6A
Other languages
German (de)
English (en)
Inventor
Matthias Gessendorfer
Baozhu Liang
Winfried Oestreicher
Ralf Wahler
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.)
SKF AB
Original Assignee
SKF AB
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 SKF AB filed Critical SKF AB
Publication of EP2847481A1 publication Critical patent/EP2847481A1/fr
Withdrawn legal-status Critical Current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
    • F16C33/46—Cages for rollers or needles
    • F16C33/51—Cages for rollers or needles formed of unconnected members
    • F16C33/513—Cages for rollers or needles formed of unconnected members formed of arcuate segments for carrying one or more 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
    • F16C19/34—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
    • F16C19/36—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 a single row of rollers
    • F16C19/364—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 a single row of rollers with tapered rollers, i.e. rollers having essentially the shape of a truncated cone
    • 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
    • F16C33/46—Cages for rollers or needles
    • F16C33/467—Details of individual pockets, e.g. shape or roller retaining means
    • 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
    • F16C43/00—Assembling bearings
    • F16C43/04—Assembling rolling-contact bearings
    • F16C43/06—Placing rolling bodies in cages or 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
    • F16C43/00—Assembling bearings
    • F16C43/04—Assembling rolling-contact bearings
    • F16C43/06—Placing rolling bodies in cages or bearings
    • F16C43/065—Placing rolling bodies in cages or bearings in cages
    • 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
    • F16C2240/00—Specified values or numerical ranges of parameters; Relations between them
    • F16C2240/40—Linear dimensions, e.g. length, radius, thickness, gap
    • F16C2240/46—Gap sizes or clearances
    • 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
    • F16C2360/00—Engines or pumps
    • F16C2360/31—Wind motors
    • 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
    • F16C33/46—Cages for rollers or needles
    • F16C33/467—Details of individual pockets, e.g. shape or roller retaining means
    • F16C33/4676—Details of individual pockets, e.g. shape or roller retaining means of the stays separating adjacent cage pockets, e.g. guide means for the bearing-surface of the 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
    • F16C41/00—Other accessories, e.g. devices integrated in the bearing not relating to the bearing function as such
    • F16C41/008—Identification means, e.g. markings, RFID-tags; Data transfer means
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T29/00—Metal working
    • Y10T29/49—Method of mechanical manufacture
    • Y10T29/49636—Process for making bearing or component thereof
    • Y10T29/49643—Rotary bearing
    • Y10T29/49679—Anti-friction bearing or component thereof
    • Y10T29/4968—Assembling of race, cage, and rolling anti-friction members
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T29/00—Metal working
    • Y10T29/49—Method of mechanical manufacture
    • Y10T29/49636—Process for making bearing or component thereof
    • Y10T29/49643—Rotary bearing
    • Y10T29/49679—Anti-friction bearing or component thereof
    • Y10T29/49691—Cage making

Definitions

  • Cage segment of a tapered roller bearing and tapered roller bearing The invention relates to a cage segment of a tapered roller bearing. Furthermore, the concerns
  • a tapered roller bearing for rotatably supporting a first machine part relative to a second machine part, in particular for rotatably supporting a rotor shaft of a wind turbine and a method for mounting a tapered roller bearing.
  • a cage segment is known from DE 10246825 A.
  • the known cage segments can be strung together at their end faces, so that with a comparatively low cost, a cage can be formed, which is particularly suitable for use in very large bearings with relatively small roles.
  • the invention has for its object to provide a cage design, which is suitable for use in very large bearings, especially in a rolling bearing of a wind turbine, and allows easy mounting of the bearing. This object is achieved by the feature combinations of the independent claims.
  • the cage segment of a tapered roller bearing according to the invention for rotatably supporting a first machine part relative to a second machine part has two opposite circumferential webs, each extending between a first circumferential end and a second circumferential end of the cage segment and at least two mutually opposite connecting webs, which connect the two circumferential webs together and together with the peripheral webs form at least one pocket for receiving a conical rolling element.
  • the peripheral webs and the connecting webs have pocket sides which bound the pocket.
  • the circumferential webs and the connecting webs arranged in the region of the first circumferential end and the second circumferential end have opposite environmental sides to the pocket sides.
  • the cage segment has a first positioning aid in the region of the first circumferential end and a second positioning aid in the region of the second circumferential end.
  • the first positioning aid and the second positioning aid are arranged relative to each other such that a correct position arrangement of adjacent cage segments in the tapered roller bearing relative to each other from the interaction of the first positioning aid and the second positioning of these cage segments can be seen.
  • the invention has the advantage that is achieved with relatively little effort that a misalignment of a cage segment during assembly of the tapered roller bearing is very easy to recognize. In this way, mounting errors caused by misalignments of cage segments can be avoided with high reliability.
  • the first positioning aid and the second positioning aid may be designed to be complementary to each other. In this way it can be achieved that a disturbance of the interaction of the positioning aids caused by a positional deviation of a cage segment becomes very clearly visible.
  • the first positioning aid and the second positioning aid can each be arranged eccentrically on the surrounding sides of the connecting webs to the same extent.
  • the first positioning aid and the second positioning aid can be arranged at the ends of the surrounding sides of the connecting webs.
  • the first positioning aid and the second positioning aid can each be arranged in a section of the surrounding side of the respective connecting web, which overlaps with one of the peripheral webs. This has the advantage that the connecting webs are supported in the region of the positioning aids by the circumferential webs and a material weakening possibly caused by the positioning aids has no negative effects.
  • the first positioning aid can be configured as a protrusion extending in the circumferential direction over the surrounding side of the connecting web and the second positioning aid as a recess.
  • the second positioning aid can be designed as a step.
  • first positioning aid and the second positioning aid of the adjacent cage segments can engage with one another.
  • the first positioning aid and the second positioning aid can be designed such that they engage with one another exclusively in the case of a positionally aligned arrangement of adjacent cage segments.
  • the elevations and the recesses of adjacent cage segments can engage with one another.
  • the cage segment can have exactly one pocket. This has the advantage that the cage segment is mechanically extremely stable.
  • the connecting webs may each have on their pocket side a concave shaped first guide surface for partially encompassing a rolling element in its circumferential direction. Furthermore, the connecting webs may each have on their pocket side a concave shaped second guide surface for partially encompassing a rolling element in its circumferential direction. All connecting webs may be identical on their pocket sides.
  • the circumferential webs may each begin at one of the connecting webs and terminate at one of the connecting webs.
  • the first guide surface and the second guide surface may be on the pocket side of the same connecting web engage around a arranged in the pocket rolling elements in different circumferential ranges and / or in different axial regions.
  • first projections for supporting the cage segment may be formed on an inner rolling element raceway of the tapered roller bearing and / or second projections for supporting the cage segment on an outer rolling body raceway of the tapered roller bearing. Additionally or alternatively, the cage segment may be guided by rolling bodies.
  • the cage segment may be configured such that a first region, within which the first projections extend between the two circumferential webs, and a second region, within which the second projections extend between the two circumferential webs, do not overlap one another.
  • the invention further relates to a tapered roller bearing for rotatably supporting a first machine part relative to a second machine part.
  • the tapered roller bearing according to the invention has conical rolling elements, each with a rotation axis and cage segments, each receiving at least one rolling element and each having a first circumferential end and a second circumferential end, on.
  • the axes of rotation of all rolling elements are arranged on a common conical surface.
  • the cage segments each have, in the region of the first circumferential end, a first positioning aid designed as an elevation and, in the region of the second circumferential end, a second positioning aid designed as a recess.
  • Recesses of adjacent cage segments interlock.
  • the elevations and the recesses may be complementary to each other.
  • the cage segments may be arranged adjacent to each other in the circumferential direction of the tapered roller bearing.
  • the tapered roller bearing may be formed so that adjacent cage segments touch at least temporarily.
  • the mean clear distance between the first circumferential end of the first cage segment and the second circumferential end of the last cage segment outside the positioning aids may be at least 0.15% and at most 1% of the pitch circle circumference be.
  • the mean clear distance can be defined in particular by arithmetic averaging.
  • the pitch circle may be defined so that it intersects the axes of rotation of the rolling elements in each case in the axial center of the rolling bodies.
  • Each cage segment can contain exactly one rolling element.
  • the cage segments may be guided by rolling bodies. It can be provided that the cage segments are not mechanically connected to each other.
  • the tapered roller bearing can serve in particular the rotatable mounting of a rotor shaft of a wind turbine.
  • the invention relates to a method for mounting a tapered roller bearing.
  • a plurality of cage segments each having a first positioning aid and a respective second positioning aid are positioned adjacent to one another in the circumferential direction of the tapered roller bearing in such a way that from the interaction of the first positioning aid and the second positioning aid of adjacent cage segments a positionally correct arrangement of these cage segments relative to one another can be recognized.
  • the cage segments can each be equipped with at least one rolling element prior to positioning in the tapered roller bearing. In this way, the mechanical stress on the cage segments can be kept low during assembly.
  • the equipped with the rolling elements cage segments can be arranged side by side on the inner rolling element track. In particular, the cage segments can be mounted individually and successively.
  • FIG. 1 shows an embodiment of a tapered roller bearing according to the invention in a perspective view
  • FIG. 3 shows the embodiment of the cage segment shown in Figure 2 in a sectional view
  • Figure 4 shows the embodiment of the cage segment shown in Figure 2 in a further sectional view
  • FIG. 5 shows the embodiment of the tapered roller bearing shown in Figure 1 without the
  • Figure 1 shows an embodiment of an inventively designed tapered roller bearing in a perspective view.
  • the tapered roller bearing has an inner ring 1 with a starting board 2 and a conical inner WälzSystemlaufbahn 3.
  • the inner rolling-element raceway 3 is covered by the in-flight board 2.
  • the rolling elements 6 rotate about their axes of rotation, not shown figuratively, with respect to.
  • the rolling elements 6 are rotationally symmetrical.
  • the rolling elements 6 run axially relative to their axes of rotation at the inrun 2.
  • the tapered roller bearing also has a plurality of cage segments 7, each containing a rolling element 6 in the illustrated embodiment.
  • a cage segment 7 is provided for each rolling element 6, so that the individual cage segments 7 each follow one another directly in the circumferential direction of the tapered roller bearing and each contain a rolling element 6.
  • adjacent cage segments 7 each touch each other.
  • the cage segments 7 may also be formed so that they each contain a plurality of rolling elements 6.
  • the cage segments 7 are guided by rolling elements, ie they are based on the rolling elements 6. In most operating situations of the tapered roller bearing, the cage segments 7 are even exclusively dzSystemonne, ie there is no contact between the cage segments 7 and the inner WälzSystemlaufbahnen 3 or the outer WälzSystemlaufbahnen 5 or other components of the inner ring 1 or the outer ring 4. Details on training the cage segments 7 are explained with reference to Figures 2, 3, 4 and 5.
  • a shaft may be arranged, on which the inner ring 1 is mounted.
  • the shaft may in particular be a rotor shaft of a wind turbine.
  • a housing 9 may be arranged, which receives the outer ring 4.
  • the housing may in particular be part of a rotor bearing of a wind turbine.
  • FIG. 2 shows an embodiment of the cage segment 7 in a perspective view.
  • FIG. 3 and FIG. 4 show the exemplary embodiment shown in FIG. 2, in each case in a sectional view, with respect to different sectional planes.
  • the representation is selected in each case in FIGS. 2 to 4 such that the inner rolling body raceway 3 would run below the cage segment 7 and the outer rolling body raceway 5 above the cage segment 7 if the cage segment 7 were installed in the tapered roller bearing in the illustrated state.
  • the cage segment 7 has two spaced apart and mutually parallel circumferential webs 10, which extend in the installed state of the cage segment 7 in the circumferential direction of the tapered roller bearing. Furthermore, the cage segment 7 has two mutually spaced connecting webs 11 which enclose a non-zero angle with each other and connect the two peripheral webs 10 together. In this way, a pocket 12 is formed for receiving a rolling element 6. Due to the non-parallel course of the connecting webs 11, the two peripheral webs 10 have a different length and the pocket 12 has the shape of an isosceles trapezium. As the length of the circumferential webs 10, the outer dimension of the circumferential webs 10 is viewed from a first circumferential end 13 to a second circumferential end 14 of the cage segment 7.
  • first circumferential end 13 and the second circumferential end 14 of the circumferential webs 10 are each not oriented parallel to one another, in each case the arithmetic mean value of the outer dimension can be used.
  • the peripheral ridge 10 shown in the foreground is longer than the circumferential ridge 10 shown in the background.
  • the sides of the circumferential webs 10 and the connecting webs 11 which bound the pocket 12 are also referred to below as pocket sides.
  • the opposite sides of the circumferential webs 10 and connecting webs 11 to the pocket sides are also referred to below as environmental sides, as far as they do not delimit a further pocket 12.
  • this condition is generally met, unless it is a multi-row cage segment 7, in which a plurality of rolling elements 6 are arranged axially one behind the other.
  • each connecting web 11 is arranged in the region of the first circumferential end 13 or the second circumferential end 14 of the cage segment 7, ie for the first connecting web 11 and the last connecting web 11 of the cage segment 7 with respect to FIG Circumferential direction of the tapered roller bearing. Since the embodiment of the cage segment 7 shown in FIGS. 2 to 4 has only one pocket 12, each circumferential ridge 10 and each connecting ridge 11 in this exemplary embodiment each have a pocket side and an environmental side.
  • the circumferential webs 10 of a single-row cage segment 7 also have a pocket side and an environmental side, even if the cage segment 7 has more than one pocket 12.
  • the connecting webs 11 can each have either one or two pocket sides and thus either one or no surrounding side.
  • a connecting web 11 which is arranged between two pockets 12 has two pocket sides and no surrounding side.
  • the circumferential webs 10 and the connecting webs 11 each have an inner raceway side, which faces in the installed state of the inner rolling element raceway 3 of the tapered roller bearing and an outer raceway side, which faces in the installed state of the outer rolling element raceway 5 of the tapered roller bearing , on.
  • the inner raceway side corresponds in each case to the underside and the outer raceway side respectively corresponds to the upper side of the circumferential webs 10 and the connecting webs 11.
  • the inner raceway sides and the outer raceway sides of the circumferential webs 10 and the connecting webs 11 are each formed as a flat surface.
  • all the outer raceway sides of the circumferential webs 10 and the connecting webs 11 each have a partial surface formed as part of a common plane.
  • the peripheral webs 10 are in particular formed integrally with the connecting webs 11.
  • This one-part design can be achieved, for example, by manufacturing the cage segment 7 as a plastic injection-molded part.
  • the peripheral webs 10 each have a large-scale depression 15 on their surrounding sides, which extends over the greater part of the surrounding sides and is framed on three sides in a U-shape. Towards the lower raceway side of the circumferential webs 10, the depression 15 is open in each case. Apart from the recess 15, the circumferential webs 10 each have a substantially rectangular cross-section.
  • the connecting webs 11 each have a first guide surface 16 for the sliding guidance of the cage segment 7 on a rolling body 6 arranged within the cage segment 7. Furthermore, the connecting webs 11 each have on their pocket sides a second guide surface 17 for the sliding guidance of the cage segment 7 on a roller body 6 arranged within the cage segment 7.
  • first guide surface 16 and the second Solutionsfiumblee 17 only areas are calculated, which can touch the lateral surface of a rolling element 6 without deformation of the cage segment 7 in the operating state of the tapered roller bearing.
  • the first engineerssfikiee 16 and the second practicessfiumblee 17 do not extend over the entire length of the connecting webs 11, but only over a portion, for example over a maximum of half the length of the connecting webs 11.
  • the second guide surface 17 is in each case arranged next to the first guide surface 16 such that the first guide surface 16 and the second guide surface 17 do not overlap or only slightly overlap one another along the longitudinal direction of the connecting web 11.
  • the first guide surface 16 and the second guide surface 17 are formed in axial regions of a rolling element 6 arranged in the cage segment 7, which overlap with each other only partially, in particular only slightly.
  • the first engineerssfikiee 16 and the second guide surface 17 overlap by less than 50%, in particular less than 10% of the length of the connecting web 11.
  • the first guide surface 16 is adjacent to the longer peripheral ridge 10 or in the vicinity, the second guide surface 17 adjacent arranged on the shorter peripheral ridge 10 or in the vicinity thereof.
  • the first guide surface 16 is arranged closer to the longer circumferential ridge 10 than the second guide surface 17, and the second guide surface 17 is arranged closer to the shorter circumferential ridge 10 than the first guide surface 16.
  • the first guide surfaces 16 and the second guide surfaces 17 each have a concave shape, so that they enclose a arranged in the pocket 12 of the cage segment 7 rolling elements 6 in each case in the circumferential direction.
  • first guide surfaces 16 and the second guide surfaces 17 are each arranged offset from one another in such a way that they guide a roller body 6 arranged in the pocket 12 in different circumferential regions, or, in a reverse view, are supported on different circumferential regions of the roller body 6.
  • these different circumferential regions do not overlap or only slightly overlap one another.
  • the peripheral regions may overlap by less than 5% or by less than 1% of the maximum overall circumference of the rolling element 6.
  • the first guide surfaces 16 are increasingly with increasing approach to the inner raceway side and beyond before and the second guide surfaces 17 increasingly with increasing approach to the outer raceway side.
  • first guide surfaces 16 and second guide surfaces 17 increasingly protrude into the region of the pocket 12 as they progress in these directions.
  • the rolling element 6 is secured against falling out on all sides and accordingly arranged captively in the pocket 12 of the cage segment 7.
  • the first guide surface 16 is in each case significantly more pronounced than the second guide surface 17.
  • a web extension 18 is formed on the connecting web 11 and projects beyond the inner raceway side progressively thickened with increasing distance from the inner raceway side.
  • the web extension 18 has a cavity 19 which is open towards the free end of the web extension 18. Through the cavity 19, the material thickness of the web extension 18 is reduced and approximated the material thickness in other areas of the cage segment 7.
  • a first projection 20 is formed, which projects beyond the end face of the web extension 18.
  • a second projection 21 is arranged on the raceway side of the connecting web 11 in the region in which the second guide region 17 is formed.
  • the first projection 20 extends in the direction of the inner WälzSystemonnebahn 3, but does not touch these when the tapered roller bearing rotates under normal conditions.
  • the second projection 21 extends in the direction of the outer rolling body raceway 5, but does not touch it when the tapered roller bearing rotates under normal conditions.
  • the tapered roller bearing is subjected to a strong pulsed load, there may come into contact between the first protrusion 20 and the inner rolling raceway 3 or between the second protrusion 21 and the outer rolling raceway 5. The same applies if the tapered roller bearing does not rotate.
  • the cage segment 7 has a marking 22 in the region of the depression 15.
  • the mark 22 may also be omitted.
  • the cage segment 7 has a first positioning aid 23 and a second positioning aid 24, which facilitate a correct arrangement of the cage segments 7 during assembly of the tapered roller bearing.
  • the first positioning aid 23 is in the region of the first Circumferential 13 of the cage segment 7 is arranged.
  • the second positioning aid 24 is arranged in the region of the second circumferential end 14 of the cage segment 7.
  • the first positioning aid 23 may be formed as an elongated elevation, which is arranged on one of the connecting webs 11 and terminates flush with the peripheral web 10.
  • the elevation may extend over the entire area between the inner raceway side and the outer raceway side of the connecting web 11.
  • the second positioning aid 24 may be formed as an elongate recess, in particular as a step, which is arranged terminally on one of the connecting webs 11 and terminates flush with the peripheral web 10. As well as the survey, the recess may extend over the entire area between the inner raceway side and the outer raceway side of the connecting web 11.
  • the first positioning aid 23 and the second positioning aid 24 may in particular be designed to be complementary to each other.
  • the dimensions of the first positioning aid 23 and the second positioning aid 24 can be coordinated with one another such that the first positioning aid 23 and the second positioning aid 24 can engage in one another.
  • the cage segment 7 can also have more than one pocket 12 and accordingly receive a plurality of rolling bodies 6.
  • the cage segment 7 in an alternative embodiment, two pockets 12, which receive two rolling elements 6.
  • the two pockets 12 are formed by two peripheral webs 10 and three connecting webs 11.
  • the third connection web 11, which is arranged between the terminal connecting webs 11, has two pocket sides and therefor no surrounding side.
  • Figure 5 shows the exemplary embodiment of the tapered roller bearing shown in Figure 1 without the outer ring 4 in a further perspective view.
  • the arrangement shown corresponds to the installation situation in the tapered roller bearing.
  • the peripheral webs 10 different cage segments 7 each include an angle with each other.
  • the inner raceway sides of the circumferential webs 10 of different cage segments 7 each include a non-zero angle with each other.
  • the outer raceway sides of the circumferential webs 10 of different cage segments 7 each include a non-zero angle with each other.
  • the cage segment 7, which has a plurality of pockets 12 there is also the possibility that the inner raceway sides and / or the outer raceway sides of the circumferential webs 10 each have a polygonal shape and accordingly sections of the raceway sides which are in the region of different pockets 12 of the cage segment 7 are arranged to enclose a non-zero angle with each other.
  • the geometry of the cage segments 7, in particular the first guide surface 16 and the second guide surface 17, is matched to the rolling elements 6 that the cage segments 7 are supported on rolling elements 6 in the rotating state of the tapered roller bearing and touch neither the inner WälzConsequentlymaschinedite 3 nor the outer WälzSystemterrorismbahn 5 , This means that the tapered roller bearing is guided by roller bodies.
  • the inner rolling element raceway 3 and the first projections 20 of the cage segments 7 and between the outer WälzConsequentlyterrorism 5 and the second projections 21 of the cage segments 7 each only a small clearance is formed so that it is at a strong pulsed load or at a standstill of the Tapered roller bearing can come into contact contact between cage segments 7 and the inner rolling element raceway 3 or the outer rolling element raceway 5.
  • This contact is formed in the region of the first projections 20 or the second projections 21 of the cage segments 7, so that the cage segments 7 in such a situation with the first projections 20 on the inner rolling element raceway 3 or with the second projections 21 on the outer rolling element track. 5 support.
  • FIG. 5 furthermore shows how the first positioning aids 23 of each cage segment 7 formed as an elevation each engage in the second positioning aids 24 of the respectively adjacent cage segment 7 formed as a recess.
  • the adjacent cage segments 7 each touch in the circumferential direction in the region of its first circumferential end 13 and its second peripheral send 14. If adjacent cage segments 7, for example, rotated by 180 ° to each other, the first positioning aid 23 and the second positioning aids 24 do not mesh. Accordingly falls during installation of the tapered roller bearing a twisted inserted cage segment 7 immediately.
  • another function of the first positioning aids 23 and the second positioning aids 24 is to secure the cage segments 7 relative to each other against displacement.
  • the cage segments 7 are first equipped with a respective rolling element 6. Then the stocked with the rolling elements 6 cage segments 7 are arranged side by side on the inner rolling element raceway 3. Preferably, the cage segments 7 are mounted individually and successively.
  • the mean clear distance can be defined in particular by arithmetic averaging.
  • the pitch circle may in particular be defined such that it intersects the axes of rotation of the rolling elements 6 in each case in the axial center of the rolling elements 6.

Landscapes

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

Abstract

L'invention concerne un segment de cage (7) d'un roulement à rouleaux coniques pour le montage rotatif d'une première partie de machine (8) par rapport à une deuxième partie de machine (9). Le segment de cage (7) selon l'invention comporte deux éléments périphériques (10) opposés, qui s'étendent respectivement entre une première extrémité périphérique (13) et une deuxième extrémité périphérique (14) du segment de cage (7) et au moins deux éléments de liaison (11) opposés, lesquels relient les deux éléments de liaison (10) et forment conjointement avec les éléments périphériques (10) au moins une alvéole (12) destinée à loger un élément de roulement conique (6). Les éléments périphériques (10) et les éléments de liaison (11) comportent des faces côté alvéole délimitant l'alvéole (12). Les éléments périphériques (10) et les éléments de liaison (11) disposés dans la zone de la première extrémité périphérique (13) et de la deuxième extrémité périphérique (14) comportent des faces côté extérieur opposées aux faces côté alvéole. Le segment de cage (7) comporte dans la zone de la première extrémité périphérique (13) un premier moyen de positionnement (23) et dans la zone de la deuxième extrémité périphérique (14) un deuxième moyen de positionnement (24). Le premier moyen de positionnement (23) et le deuxième moyen de positionnement (24) sont disposés l'un par rapport à l'autre de telle manière qu'il est possible de repérer si les segments de cage (7) adjacents dans le roulement à rouleaux coniques sont disposés dans la bonne position les uns par rapport aux autres grâce à la coopération du premier moyen de positionnement (23) et du deuxième moyen de positionnement (24) desdits segments de cage (7).
EP13719288.6A 2012-05-07 2013-04-22 Segment de cage d'un roulement à rouleaux coniques et roulement à rouleaux coniques Withdrawn EP2847481A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE102012207529A DE102012207529A1 (de) 2012-05-07 2012-05-07 Käfigsegment eines Kegelrollenlagers und Kegelrollenlager
PCT/EP2013/058257 WO2013167363A1 (fr) 2012-05-07 2013-04-22 Segment de cage d'un roulement à rouleaux coniques et roulement à rouleaux coniques

Publications (1)

Publication Number Publication Date
EP2847481A1 true EP2847481A1 (fr) 2015-03-18

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EP13719288.6A Withdrawn EP2847481A1 (fr) 2012-05-07 2013-04-22 Segment de cage d'un roulement à rouleaux coniques et roulement à rouleaux coniques

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US (1) US9458886B2 (fr)
EP (1) EP2847481A1 (fr)
JP (1) JP2015516556A (fr)
CN (1) CN104350297A (fr)
DE (1) DE102012207529A1 (fr)
WO (1) WO2013167363A1 (fr)

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JP2015102153A (ja) * 2013-11-25 2015-06-04 株式会社ジェイテクト 分割保持器及びころ軸受
JP2015135142A (ja) * 2014-01-17 2015-07-27 株式会社ジェイテクト 円錐ころ軸受の組立用治具および組立方法、ならびに内輪アッセンブリ
JP2015135143A (ja) * 2014-01-17 2015-07-27 株式会社ジェイテクト 円錐ころ軸受の組立用治具および組立方法、ならびに内輪アッセンブリ
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Also Published As

Publication number Publication date
JP2015516556A (ja) 2015-06-11
US20150219157A1 (en) 2015-08-06
US9458886B2 (en) 2016-10-04
WO2013167363A1 (fr) 2013-11-14
DE102012207529A1 (de) 2013-11-07
CN104350297A (zh) 2015-02-11

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