WO2017137027A1 - Cable sheave bearing assembly - Google Patents

Cable sheave bearing assembly Download PDF

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Publication number
WO2017137027A1
WO2017137027A1 PCT/DE2017/100008 DE2017100008W WO2017137027A1 WO 2017137027 A1 WO2017137027 A1 WO 2017137027A1 DE 2017100008 W DE2017100008 W DE 2017100008W WO 2017137027 A1 WO2017137027 A1 WO 2017137027A1
Authority
WO
WIPO (PCT)
Prior art keywords
bearing
pulley
coating
inner ring
layer
Prior art date
Application number
PCT/DE2017/100008
Other languages
German (de)
French (fr)
Inventor
Serge Kursawe
Milan Madron
Dino KAEMPFFER
Original Assignee
Schaeffler Technologies AG & Co. 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 Technologies AG & Co. KG filed Critical Schaeffler Technologies AG & Co. KG
Publication of WO2017137027A1 publication Critical patent/WO2017137027A1/en

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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
    • F16C33/366—Tapered rollers, i.e. rollers generally shaped as truncated cones
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B66—HOISTING; LIFTING; HAULING
    • B66D—CAPSTANS; WINCHES; TACKLES, e.g. PULLEY BLOCKS; HOISTS
    • B66D3/00—Portable or mobile lifting or hauling appliances
    • B66D3/04—Pulley blocks or like devices in which force is applied to a rope, cable, or chain which passes over one or more pulleys, e.g. to obtain mechanical advantage
    • B66D3/06—Pulley blocks or like devices in which force is applied to a rope, cable, or chain which passes over one or more pulleys, e.g. to obtain mechanical advantage with more than one pulley
    • B66D3/08—Arrangements of sheaves
    • C—CHEMISTRY; METALLURGY
    • C23—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; CHEMICAL SURFACE TREATMENT; DIFFUSION TREATMENT OF METALLIC MATERIAL; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL; INHIBITING CORROSION OF METALLIC MATERIAL OR INCRUSTATION IN GENERAL
    • C23C—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; SURFACE TREATMENT OF METALLIC MATERIAL BY DIFFUSION INTO THE SURFACE, BY CHEMICAL CONVERSION OR SUBSTITUTION; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL
    • C23C28/00—Coating for obtaining at least two superposed coatings either by methods not provided for in a single one of groups C23C2/00 - C23C26/00 or by combinations of methods provided for in subclasses C23C and C25C or C25D
    • C23C28/30—Coatings combining at least one metallic layer and at least one inorganic non-metallic layer
    • C23C28/32—Coatings combining at least one metallic layer and at least one inorganic non-metallic layer including at least one pure metallic layer
    • C23C28/324—Coatings combining at least one metallic layer and at least one inorganic non-metallic layer including at least one pure metallic layer with at least one metal matrix material layer comprising a mixture of at least two metals or metal phases or a metal-matrix material with hard embedded particles, e.g. WC-Me
    • C—CHEMISTRY; METALLURGY
    • C23—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; CHEMICAL SURFACE TREATMENT; DIFFUSION TREATMENT OF METALLIC MATERIAL; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL; INHIBITING CORROSION OF METALLIC MATERIAL OR INCRUSTATION IN GENERAL
    • C23C—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; SURFACE TREATMENT OF METALLIC MATERIAL BY DIFFUSION INTO THE SURFACE, BY CHEMICAL CONVERSION OR SUBSTITUTION; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL
    • C23C28/00—Coating for obtaining at least two superposed coatings either by methods not provided for in a single one of groups C23C2/00 - C23C26/00 or by combinations of methods provided for in subclasses C23C and C25C or C25D
    • C23C28/30—Coatings combining at least one metallic layer and at least one inorganic non-metallic layer
    • C23C28/32—Coatings combining at least one metallic layer and at least one inorganic non-metallic layer including at least one pure metallic layer
    • C23C28/325—Coatings combining at least one metallic layer and at least one inorganic non-metallic layer including at least one pure metallic layer with layers graded in composition or in physical properties
    • C—CHEMISTRY; METALLURGY
    • C23—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; CHEMICAL SURFACE TREATMENT; DIFFUSION TREATMENT OF METALLIC MATERIAL; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL; INHIBITING CORROSION OF METALLIC MATERIAL OR INCRUSTATION IN GENERAL
    • C23C—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; SURFACE TREATMENT OF METALLIC MATERIAL BY DIFFUSION INTO THE SURFACE, BY CHEMICAL CONVERSION OR SUBSTITUTION; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL
    • C23C28/00—Coating for obtaining at least two superposed coatings either by methods not provided for in a single one of groups C23C2/00 - C23C26/00 or by combinations of methods provided for in subclasses C23C and C25C or C25D
    • C23C28/30—Coatings combining at least one metallic layer and at least one inorganic non-metallic layer
    • C23C28/34—Coatings combining at least one metallic layer and at least one inorganic non-metallic layer including at least one inorganic non-metallic material layer, e.g. metal carbide, nitride, boride, silicide layer and their mixtures, enamels, phosphates and sulphates
    • C23C28/343—Coatings combining at least one metallic layer and at least one inorganic non-metallic layer including at least one inorganic non-metallic material layer, e.g. metal carbide, nitride, boride, silicide layer and their mixtures, enamels, phosphates and sulphates with at least one DLC or an amorphous carbon based layer, the layer being doped or not
    • C—CHEMISTRY; METALLURGY
    • C23—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; CHEMICAL SURFACE TREATMENT; DIFFUSION TREATMENT OF METALLIC MATERIAL; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL; INHIBITING CORROSION OF METALLIC MATERIAL OR INCRUSTATION IN GENERAL
    • C23C—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; SURFACE TREATMENT OF METALLIC MATERIAL BY DIFFUSION INTO THE SURFACE, BY CHEMICAL CONVERSION OR SUBSTITUTION; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL
    • C23C28/00—Coating for obtaining at least two superposed coatings either by methods not provided for in a single one of groups C23C2/00 - C23C26/00 or by combinations of methods provided for in subclasses C23C and C25C or C25D
    • C23C28/30—Coatings combining at least one metallic layer and at least one inorganic non-metallic layer
    • C23C28/34—Coatings combining at least one metallic layer and at least one inorganic non-metallic layer including at least one inorganic non-metallic material layer, e.g. metal carbide, nitride, boride, silicide layer and their mixtures, enamels, phosphates and sulphates
    • C23C28/347—Coatings combining at least one metallic layer and at least one inorganic non-metallic layer including at least one inorganic non-metallic material layer, e.g. metal carbide, nitride, boride, silicide layer and their mixtures, enamels, phosphates and sulphates with layers adapted for cutting tools or wear applications
    • E—FIXED CONSTRUCTIONS
    • E04—BUILDING
    • E04C—STRUCTURAL ELEMENTS; BUILDING MATERIALS
    • E04C2/00—Building elements of relatively thin form for the construction of parts of buildings, e.g. sheet materials, slabs, or panels
    • E04C2/44—Building elements of relatively thin form for the construction of parts of buildings, e.g. sheet materials, slabs, or panels characterised by the purpose
    • E04C2/52—Building elements of relatively thin form for the construction of parts of buildings, e.g. sheet materials, slabs, or panels characterised by the purpose with special adaptations for auxiliary purposes, e.g. serving for locating conduits
    • E—FIXED CONSTRUCTIONS
    • E04—BUILDING
    • E04C—STRUCTURAL ELEMENTS; BUILDING MATERIALS
    • E04C2/00—Building elements of relatively thin form for the construction of parts of buildings, e.g. sheet materials, slabs, or panels
    • E04C2/44—Building elements of relatively thin form for the construction of parts of buildings, e.g. sheet materials, slabs, or panels characterised by the purpose
    • E04C2/52—Building elements of relatively thin form for the construction of parts of buildings, e.g. sheet materials, slabs, or panels characterised by the purpose with special adaptations for auxiliary purposes, e.g. serving for locating conduits
    • E04C2/521—Building elements of relatively thin form for the construction of parts of buildings, e.g. sheet materials, slabs, or panels characterised by the purpose with special adaptations for auxiliary purposes, e.g. serving for locating conduits serving for locating conduits; for ventilating, heating or cooling
    • E04C2/525—Building elements of relatively thin form for the construction of parts of buildings, e.g. sheet materials, slabs, or panels characterised by the purpose with special adaptations for auxiliary purposes, e.g. serving for locating conduits serving for locating conduits; for ventilating, heating or cooling for heating or cooling
    • 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
    • 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
    • F16C19/383—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 with tapered rollers, i.e. rollers having essentially the shape of a truncated cone
    • F16C19/385—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 with tapered rollers, i.e. rollers having essentially the shape of a truncated cone with two rows, i.e. double-row tapered roller bearings
    • F16C19/386—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 with tapered rollers, i.e. rollers having essentially the shape of a truncated cone with two rows, i.e. double-row tapered roller bearings 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
    • 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
    • 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
    • F16C33/00—Parts of bearings; Special methods for making bearings or parts thereof
    • F16C33/30—Parts of ball or roller bearings
    • F16C33/66—Special parts or details in view of lubrication
    • F16C33/6696—Special parts or details in view of lubrication with solids as lubricant, e.g. dry coatings, powder
    • 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
    • F16C33/72—Sealings
    • F16C33/76—Sealings of 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
    • F16C2206/00—Materials with ceramics, cermets, hard carbon or similar non-metallic hard materials as main constituents
    • F16C2206/02—Carbon based material
    • 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
    • F16C2206/00—Materials with ceramics, cermets, hard carbon or similar non-metallic hard materials as main constituents
    • F16C2206/02—Carbon based material
    • F16C2206/04—Diamond like carbon [DLC]
    • 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
    • F16C2206/00—Materials with ceramics, cermets, hard carbon or similar non-metallic hard materials as main constituents
    • F16C2206/80—Cermets, i.e. composites of ceramics and metal
    • 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
    • F16C2206/00—Materials with ceramics, cermets, hard carbon or similar non-metallic hard materials as main constituents
    • F16C2206/80—Cermets, i.e. composites of ceramics and metal
    • F16C2206/82—Cermets, i.e. composites of ceramics and metal based on tungsten carbide [WC]
    • 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
    • F16C2223/00—Surface treatments; Hardening; Coating
    • F16C2223/30—Coating surfaces
    • 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
    • F16C2300/40—Application independent of particular apparatuses related to environment, i.e. operating conditions
    • F16C2300/42—Application independent of particular apparatuses related to environment, i.e. operating conditions corrosive, i.e. with aggressive media or harsh conditions
    • 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

Definitions

  • the invention relates to a pulley bearing assembly with at least two pulleys, each pulley is supported by a double-row pulley bearing having a bearing inner ring formed at both axial ends Lagerinnenringbord, a bearing outer ring, a plurality of interposed rolling elements and two cages that carry the rolling elements, and wherein the bearing inner ring is arranged on a shaft.
  • Pulley bearing assemblies are used primarily, but not exclusively, on cranes.
  • the cranes have at least one suspension cable, which is deflected by the sheaves.
  • the pulleys thus serve as a deflection and guide element of the support cable.
  • By looping around the sheaves with the carrying rope especially radial forces are created.
  • axial forces or even tilting moments can occur due to an oblique pull of the carrying cable.
  • pulley bearing arrangements can also be found in compensation systems for drilling and production platforms or drilling and production vessels, mining equipment, elevators and cable cars.
  • DE 10 2012 219 513 A1 discloses a sheave with a bearing, wherein the sheave consists of a plastic material and is manufactured by encapsulation or encapsulation of the bearing as a one-piece, integral component.
  • pulleys mainly consist of cast steel.
  • the prior art also includes the publications DE 10 2010 030 648 A1, DE 10 2009 036 688 A1, WO 2008/106330 A1 and DE 10 2006 057 484 B4.
  • coated rolling bearings are disclosed.
  • DE 10 2010 030 648 A1 and in WO 2008/106330 A1 a tapered roller bearing is disclosed in each case, the rolling elements, at least part of the surface of the rolling elements and / or the rolling elements facing side of the guide collar, are provided with a low-friction coating.
  • the friction-reducing coating in both documents is a diamond-like carbon coating (DLC, diamond-like carbon).
  • DE 10 2006 057 484 B4 discloses a rolling bearing having a plurality of rolling elements and a cylindrical bearing cage, wherein the bearing cage is provided with a surface coating of a metal-free amorphous hydrocarbon and the rolling elements and / or the bearing rings with a surface coating of a metal-containing amorphous hydrocarbon are provided.
  • Object of the present invention is to develop a wear-resistant compared to the prior art pulley bearing assembly.
  • a lack of lubrication can come about, which in turn can lead to heavy wear of Lagerinnenringborden and rolling elements. The consequence of this is premature failure of the pulley bearings. The failure is also favored by one caused by the oscillation Onsterrorism resulting state of lack of lubrication between the lateral surface of the rolling elements and the raceways of the bearing rings.
  • the pulley bearing arrangement according to the invention with at least two pulley sheaves, each pulley being mounted by means of a double-row pulley bearing has a bearing inner ring with board formed on both axial ends, a bearing outer ring, a plurality of rolling bodies arranged therebetween and two cages guiding the rolling bodies, wherein the bearing inner ring is arranged on a shaft, and is characterized in that the rolling elements and / or the bearing inner ring at least in a contact region, in which a front side is in contact with the bearing inner ring, a coating comprising at least one amorphous carbon layer.
  • the coating consists of or comprises at least one amorphous carbon layer.
  • Amorphous carbon films are also known under the name of diamond-like carbon (DLC) layers.
  • the coating consists of or the coating comprises a metal-doped amorphous carbon layer.
  • the pulleys can be arranged axially next to one another on a shaft and / or radially one above the other. In the pure radially superimposed embodiment each pulley is arranged on a shaft. In the case of the purely axial arrangement of the pulleys, however, only one shaft is necessary, on which the pulleys are arranged. A combination of axial and radial arrangement of the sheaves is also conceivable.
  • At least one of the two bearing rings is formed in two parts. It is thus also possible that the bearing inner ring and the bearing outer ring are formed in two parts. Preferably, only the larger of the two end faces of the rolling elements is coated. In a further preferred embodiment of the pulley bearing arrangement, the larger of the two end faces of the rolling bodies and furthermore the lateral surface of the rolling bodies is coated. It is also possible that the surfaces of the bearing rings, which come into contact with the rolling elements, also or instead of the rolling elements, are coated with the coating only in the area of these contact surfaces. By coating the lack of lubrication between the rolling element and bearing inner ring board and between rolling elements and raceways is prevented.
  • the coating preferably comprises a hydrogen-containing amorphous carbon layer.
  • the hydrogen-containing amorphous carbon layer is further preferably doped with suitable metals or non-metals such as tungsten or silicon. This means that the coating has, for example, a metal-doped hydrogen-containing amorphous carbon layer which forms the free surface of the coating. As a result, high wear resistance and a low coefficient of friction are achieved.
  • Triondur® layer systems of the applicant, in particular the layer system Triondur® C.
  • tungsten is provided as a metal doping.
  • Tungsten is one of the transition metals and has high hardness, density and strength.
  • the Triondur® C coating is a hard, multi-layered amorphous hydrocarbon layer with fractions of tungsten and tungsten carbides.
  • Tapered roller bearings or cylindrical roller bearings are preferably used as pulley bearings. That is, the rolling elements are preferably designed either as tapered rollers or as cylindrical rollers.
  • the coating it is advantageous for the coating to have a layer thickness of 0.2 ⁇ m to 10 ⁇ m, in particular 0.5 m to 4 m.
  • Layer thickness means the total applied material thickness, regardless of how many different layers the coating consists of.
  • the coating has a multilayer structure.
  • the multilayer coating has at least one adhesion-promoting layer and at least one functional layer, wherein the adhesion-promoting layer (s) is metal-containing and the functional layer (s) comprise / comprises a hydrogen-containing amorphous carbon layer.
  • the at least one adhesion-promoting layer serves to improve the adhesion of the coating to the surface of the rolling element and preferably consists of metals, their nitrides, carbides, metal-containing amorphous, hydrogen-containing carbon layers or combinations thereof.
  • the at least one functional layer, which is applied to the at least one adhesion promoter layer, on the other hand, preferably consists of one or more amorphous hydrogen-containing carbon layers, which is / are used optionally without doping or with doping of metals or non-metals. In this case, a multilayer structure of the functional layer can be present.
  • a multilayer structure of a coating is known, for example, from DE 10 2007 054 181 A1. Furthermore, as in DE 10 2006 029 415 A1, the individual layers of the coating can have nanoparticles.
  • each pulley bearing is formed with two seals.
  • the seals seal the pulley bearings outwards.
  • FIG. 1 shows a cable pulley bearing arrangement according to the invention in a sectional view with three axially adjacent pulleys
  • FIG. 2 shows a greatly enlarged detail from FIG. 1
  • Figure 3 shows another pulley bearing in the sectional view
  • FIG. 4 shows a pulley bearing arrangement with a combination of radially above each other and axially adjacent pulleys.
  • a pulley bearing assembly 1 according to the invention is shown in the sectional view with three on a shaft 2 axially adjacent pulleys 3.
  • the shaft 2 rotates about its axis of rotation 2a, wherein due to their rotational symmetry, only one half of the pulley assembly 1 is shown in the sectional view.
  • the pulley bearing assembly 1 according to FIG. 1 comprises three pulley bearings 4 by means of which the pulleys 3 are mounted on the shaft 2. All three pulley bearings 4 are identically constructed and designed here in each case as a double-row tapered roller bearing with O-arrangement.
  • the pulley bearings 4 each have a divided bearing inner ring 5, a split bearing outer ring 6, a plurality of rolling elements 7 arranged therebetween in two rows and two cages 14 in which the rolling elements 7 are guided.
  • the bearing inner rings 5 have at both axial ends in each case a Lagerinnenringbord 8.
  • the three split bearing inner rings 5 are arranged axially next to one another on the shaft 2.
  • the two-part bearing outer rings 6 are each in direct contact with a sheave 3.
  • the rolling between the bearing inner ring 5 and bearing outer ring 6 rolling elements 7 are formed as tapered rollers.
  • the rolling elements 7 each have a lateral surface 10, a larger end face 9 and a smaller end face 9 ' , wherein the larger end faces 9 by means of a carbon-containing coating 1 1 (see FIG 2) are coated.
  • FIG. 1 a greatly enlarged detail of FIG. 1 is shown.
  • the same reference numerals as in Figure 1 denote the same elements.
  • This detail shows a part of the bearing inner rim 8 and a part of a rolling element 7.
  • the coating 11 comprises an adhesion-promoting layer 12, which is applied directly to the rolling element 7, and has a gradient material of chromium (Cr) / tungsten carbide (WC).
  • the coating tion 1 1 further comprises a functional layer 13, which is applied directly to the adhesion-promoting layer 12.
  • the functional layer 13 consists of a multilayered hydrogen-containing amorphous carbon layer (indicated by the dashed line), which is doped with tungsten.
  • the layer thickness D s of the coating 11 here is 3 pm in total.
  • FIG. 3 another exemplary pulley bearing 4 is shown enlarged in the sectional view.
  • the same reference numerals as in Figure 1 denote the same elements. Again, due to the rotational symmetry, only one half of the pulley bearing 4 is shown.
  • This pulley bearing 4 is also formed as a tapered roller bearing, wherein, in contrast to the tapered roller bearing shown in Fig. 1, the bearing outer ring 6 is integrally formed.
  • the bearing rings 5, 6 are partially coated with a coating 11. In this case, only the surfaces of the bearing inner ring 5 are coated, which come into contact with the larger end face 9 of the rolling elements 7.
  • FIG. 4 shows a cable pulley bearing arrangement 1 according to the invention with a combination of pulleys 3 arranged radially one above the other and axially next to one another.
  • This figure shows very schematically the structure of a compensation system for oil and gas platforms or for ships.
  • Each side two pulleys 3 are arranged radially one above the other.
  • Each of the sheaves 3 is mounted on a shaft 2 via a pulley bearing 4.
  • a plurality of sheaves 3 are arranged on a shaft 2 axially adjacent to each other centrally between the four lateral sheaves 3.
  • the rolling elements 7 of the pulley bearings 4 are provided with a coating 11 as described in FIG. List of reference pulley bearing arrangement

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Abstract

The invention relates to a cable sheave bearing assembly (1) comprising at least two cable sheaves (3), wherein each cable sheave (3) is mounted via a double-row cable sheave bearing (4) having a bearing inner ring (5) with an edge (8) formed on both axial ends thereof, a bearing outer ring (6), a plurality of rolling bodies (7) arranged between same, comprising two end sides and also two cages (14) which guide the rolling bodies (7), wherein the bearing inner ring (5) is arranged on a shaft (2), and wherein the rolling bodies (7) and/or the bearing inner ring (5) have a coating (11) comprising an amorphous carbon layer, at least in a contact region in which an end side (9, 9') is in contact with the bearing inner ring (5).

Description

Seilscheibenlageranordnung  Sheave bearing arrangement
Die Erfindung betrifft eine Seilscheibenlageranordnung mit mindestens zwei Seil- Scheiben, wobei jede Seilscheibe mittels eines zweireihigen Seilscheibenlagers gelagert ist, das einen Lagerinnenring mit an beiden axialen Enden ausgebildetem Lagerinnenringbord, einen Lageraußenring, eine Vielzahl dazwischen angeordneter Wälzkörper sowie zwei Käfige, die die Wälzkörper führen, aufweist, und wobei der Lagerinnenring auf einer Welle angeordnet ist. The invention relates to a pulley bearing assembly with at least two pulleys, each pulley is supported by a double-row pulley bearing having a bearing inner ring formed at both axial ends Lagerinnenringbord, a bearing outer ring, a plurality of interposed rolling elements and two cages that carry the rolling elements, and wherein the bearing inner ring is arranged on a shaft.
Seilscheibenlageranordnungen werden vor allem, aber nicht ausschließlich, bei Kränen verwendet. Die Kräne weisen mindestens ein Tragseil auf, das von den Seilscheiben umgelenkt wird. Die Seilscheiben dienen somit als Umlenk- und Führungselement des Tragseils. Durch das Umschlingen der Seilscheiben mit dem Trag- seil entstehen vor allem radiale Kräfte. Allerdings können durch einen Schrägzug des Tragseils auch Axialkräfte oder sogar Kippmomente auftreten. Seilscheibenlageranordnungen sind neben eine Anwendung bei Kränen auch in Kompensationssystemen für Bohr- und Förderplattformen beziehungsweise Bohr- und Förderschiffen, Förderanlagen für den Bergbau, bei Aufzügen sowie bei Bergbahnen zu finden. Pulley bearing assemblies are used primarily, but not exclusively, on cranes. The cranes have at least one suspension cable, which is deflected by the sheaves. The pulleys thus serve as a deflection and guide element of the support cable. By looping around the sheaves with the carrying rope, especially radial forces are created. However, axial forces or even tilting moments can occur due to an oblique pull of the carrying cable. In addition to cranes, pulley bearing arrangements can also be found in compensation systems for drilling and production platforms or drilling and production vessels, mining equipment, elevators and cable cars.
In der DE 10 2012 219 513 A1 ist eine Seilscheibe mit einem Lager offenbart, wobei die Seilscheibe aus einem Kunststoffmaterial besteht und durch Umspritzen oder Umgießen des Lagers als einstückiges, integrales Bauteil hergestellt ist. Neben den hier erwähnten Kunststoffausführungen bestehen Seilscheiben vor allem aus gegossenem Stahl. DE 10 2012 219 513 A1 discloses a sheave with a bearing, wherein the sheave consists of a plastic material and is manufactured by encapsulation or encapsulation of the bearing as a one-piece, integral component. In addition to the plastic versions mentioned here, pulleys mainly consist of cast steel.
Ebenfalls zum Stand der Technik zählen die Druckschriften DE 10 2010 030 648 A1 , DE 10 2009 036 688 A1 , WO 2008/106330 A1 sowie DE 10 2006 057 484 B4. Hier werden beschichtete Wälzlager offenbart. In der DE 10 2010 030 648 A1 und in der WO 2008/106330 A1 ist jeweils ein Kegelrollenlager offenbart, deren Wälzkörper, zumindest ein Teil der Oberfläche der Wälzkörper und/oder die den Wälzkörpern zugewandte Seite des Führungsbunds, mit einer reibungsarmen Beschichtung versehen sind. Als reibmindernde Beschichtung wird in beiden Druckschriften eine diamantähnliche Kohlenstoff-Beschichtung (DLC; Dia- mond-like Carbon) aufgeführt. The prior art also includes the publications DE 10 2010 030 648 A1, DE 10 2009 036 688 A1, WO 2008/106330 A1 and DE 10 2006 057 484 B4. Here coated rolling bearings are disclosed. In DE 10 2010 030 648 A1 and in WO 2008/106330 A1 a tapered roller bearing is disclosed in each case, the rolling elements, at least part of the surface of the rolling elements and / or the rolling elements facing side of the guide collar, are provided with a low-friction coating. The friction-reducing coating in both documents is a diamond-like carbon coating (DLC, diamond-like carbon).
In der DE 10 2009 036 688 A1 ist ein Rollenlager offenbart, deren Wälzkörper mit einer Gleitreibung vermindernden Beschichtung versehen sind. In DE 10 2009 036 688 A1 discloses a roller bearing is disclosed, the rolling elements are provided with a sliding friction-reducing coating.
In der DE 10 2006 057 484 B4 wird ein Wälzlager mit einer Mehrzahl von Wälzkörpern sowie einem zylindrischen Lagerkäfig offenbart, wobei der Lagerkäfig mit einer Ober- flächenbeschichtung aus einem metallfreien amorphen Kohlenwasserstoff versehen ist und die Wälzkörper und/oder die Lagerringe mit einer Oberflächenbeschichtung aus einem metallhaltigen amorphen Kohlenwasserstoff versehen sind. DE 10 2006 057 484 B4 discloses a rolling bearing having a plurality of rolling elements and a cylindrical bearing cage, wherein the bearing cage is provided with a surface coating of a metal-free amorphous hydrocarbon and the rolling elements and / or the bearing rings with a surface coating of a metal-containing amorphous hydrocarbon are provided.
Aufgabe der vorliegenden Erfindung ist es, eine im Vergleich zum Stand der Technik verschleißärmere Seilscheibenlageranordnung zu entwickeln. Object of the present invention is to develop a wear-resistant compared to the prior art pulley bearing assembly.
Zur Lösung der erfindungsgemäßen Aufgabe wird die im Anspruch 1 angegebene Seilscheibenlageranordnung vorgeschlagen. Optionale vorteilhafte Ausgestaltungen der Erfindung ergeben sich ganz oder teilweise aus den abhängigen Ansprüchen. To solve the object of the invention specified in claim 1 pulley bearing assembly is proposed. Optional advantageous embodiments of the invention arise wholly or partly from the dependent claims.
Seilscheiben, speziell in Kompensationssystemen für die Öl- und Gasexploration, füh- ren auch oszillierende Bewegungen durch. Dadurch wird der Schmierstoff in den Seilscheibenlagern zwischen Wälzkörper und Lagerinnenringbord verdrängt. Trotz optimierter Schmierstoffzufuhr in einem Seilscheibenlager kann eine Mangelschmierung zustande kommen, die wiederum zu einem starken Verschleiß von Lagerinnenringborden und Wälzkörpern führen kann. Die Folge daraus ist ein vorzeitiger Ausfall der Seilscheibenlager. Begünstigt wird der Ausfall auch durch einen, durch die Oszillati- onsbewegung entstehenden Zustand der Mangelschmierung zwischen der Mantelfläche der Wälzkörper und den Laufbahnen der Lagerringe. Sheaves, especially in compensation systems for oil and gas exploration, also perform oscillating movements. As a result, the lubricant is displaced in the pulley bearings between the rolling elements and Lagerinnenringbord. Despite optimized lubricant supply in a pulley bearing, a lack of lubrication can come about, which in turn can lead to heavy wear of Lagerinnenringborden and rolling elements. The consequence of this is premature failure of the pulley bearings. The failure is also favored by one caused by the oscillation Onsbewegung resulting state of lack of lubrication between the lateral surface of the rolling elements and the raceways of the bearing rings.
Die erfindungsgemäße Seilscheibenlageranordnung mit mindestens zwei Seilschei- ben, wobei jede Seilscheibe mittels eines zweireihigen Seilscheibenlagers gelagert ist, weist einen Lagerinnenring mit an beiden axialen Enden ausgebildetem Bord, einen Lageraußenring, eine Vielzahl dazwischen angeordneter Wälzkörper sowie zwei Käfige, die die Wälzkörper führen, auf, wobei der Lagerinnenring auf einer Welle angeordnet ist, und zeichnet sich dadurch aus, dass die Wälzkörper und/oder der Lagerin- nenring zumindest in einem Kontaktbereich, in welchem eine Stirnseite in Kontakt zu dem Lagerinnenring steht, eine Beschichtung umfassend mindestens eine amorphe Kohlenstoffschicht aufweisen. The pulley bearing arrangement according to the invention with at least two pulley sheaves, each pulley being mounted by means of a double-row pulley bearing, has a bearing inner ring with board formed on both axial ends, a bearing outer ring, a plurality of rolling bodies arranged therebetween and two cages guiding the rolling bodies, wherein the bearing inner ring is arranged on a shaft, and is characterized in that the rolling elements and / or the bearing inner ring at least in a contact region, in which a front side is in contact with the bearing inner ring, a coating comprising at least one amorphous carbon layer.
Die Beschichtung besteht aus oder umfasst mindestens eine amorphe Kohlenstoff- schicht. Amorphe Kohlenstoffschichten sind auch unter dem Namen Diamond-Like- Carbon-Schichten (DLC-Schichten) bekannt. Insbesondere besteht die Beschichtung aus oder umfasst die Beschichtung eine metalldotierte amorphe Kohlenstoffschicht. Durch die Wahl einer derartigen Schicht als eine die freie Oberfläche der Beschichtung bildende Schicht werden sehr günstige Lagereigenschaften erreicht. The coating consists of or comprises at least one amorphous carbon layer. Amorphous carbon films are also known under the name of diamond-like carbon (DLC) layers. In particular, the coating consists of or the coating comprises a metal-doped amorphous carbon layer. By choosing such a layer as a layer forming the free surface of the coating, very favorable storage properties are achieved.
Die Seilscheiben können dabei axial nebeneinander auf einer Welle und / oder radial übereinander angeordnet sein. Bei der reinen radial übereinander angeordneten Ausführung ist jede Seilscheibe auf einer Welle angeordnet. Bei der reinen axialen Anordnung der Seilscheiben hingegen ist nur eine Welle notwendig, auf der die Seilschei- ben angeordnet sind. Eine Kombination aus axialer und radialer Anordnung der Seilscheiben ist ebenfalls denkbar. The pulleys can be arranged axially next to one another on a shaft and / or radially one above the other. In the pure radially superimposed embodiment each pulley is arranged on a shaft. In the case of the purely axial arrangement of the pulleys, however, only one shaft is necessary, on which the pulleys are arranged. A combination of axial and radial arrangement of the sheaves is also conceivable.
Des Weiteren ist mindestens einer der beiden Lagerringe, vorzugsweise der Lagerinnenring, zweiteilig ausgebildet. Es ist somit auch möglich, dass der Lagerinnenring sowie der Lageraußenring zweiteilig ausgebildet sind. Vorzugsweise ist lediglich die größere der beiden Stirnseiten der Wälzkörper beschichtet. In einer weiteren bevorzugten Ausführungsform der Seilscheibenlageran- ordnung ist die größere der beiden Stirnseiten der Wälzkörper und weiterhin die Mantelfläche der Wälzkörper beschichtet. Es ist auch möglich, dass die Flächen der La- gerringe, die mit den Wälzkörpern in Kontakt kommen, ebenfalls oder anstatt der Wälzkörper, nur im Bereich dieser Kontaktflächen mit der Beschichtung beschichtet sind. Durch die Beschichtung wird der Mangelschmierung zwischen Wälzkörper und Lagerinnenringbord sowie zwischen Wälzkörper und Laufbahnen vorgebeugt. Furthermore, at least one of the two bearing rings, preferably the bearing inner ring, is formed in two parts. It is thus also possible that the bearing inner ring and the bearing outer ring are formed in two parts. Preferably, only the larger of the two end faces of the rolling elements is coated. In a further preferred embodiment of the pulley bearing arrangement, the larger of the two end faces of the rolling bodies and furthermore the lateral surface of the rolling bodies is coated. It is also possible that the surfaces of the bearing rings, which come into contact with the rolling elements, also or instead of the rolling elements, are coated with the coating only in the area of these contact surfaces. By coating the lack of lubrication between the rolling element and bearing inner ring board and between rolling elements and raceways is prevented.
Die Beschichtung umfasst vorzugsweise eine wasserstoffhaltige amorphe Kohlenstoffschicht. Die wasserstoffhaltige amorphe Kohlenstoffschicht ist des Weiteren vorzugsweise mit geeigneten Metallen oder Nichtmetallen, wie zum Beispiel Wolfram oder Silizium, dotiert. Das bedeutet, dass die Beschichtung beispielsweise eine die freie Oberfläche der Beschichtung bildende metalldotierte wasserstoffhaltige amorphe Kohlenstoffschicht aufweist. Dadurch werden eine hohe Verschleißfestigkeit sowie ein geringer Reibkoeffizient erreicht. The coating preferably comprises a hydrogen-containing amorphous carbon layer. The hydrogen-containing amorphous carbon layer is further preferably doped with suitable metals or non-metals such as tungsten or silicon. This means that the coating has, for example, a metal-doped hydrogen-containing amorphous carbon layer which forms the free surface of the coating. As a result, high wear resistance and a low coefficient of friction are achieved.
Besonders geeignet sind die unter dem Markennamen Triondur® bekannten Schichtsysteme der Anmelderin, insbesondere das Schichtsystem Triondur® C. Bei diesem Schichtsystem ist Wolfram als Metalldotierung vorgesehen. Wolfram gehört zu den Übergangsmetallen und weist eine hohe Härte, Dichte und Festigkeit auf. Es handelt sich bei der Triondur® C-Beschichtung um eine harte, mehrlagig aufgebaute amorphe Kohlenwasserstoffschicht mit Anteilen von Wolfram und Wolframkarbiden. Particularly suitable are the known under the brand name Triondur® layer systems of the applicant, in particular the layer system Triondur® C. In this layer system tungsten is provided as a metal doping. Tungsten is one of the transition metals and has high hardness, density and strength. The Triondur® C coating is a hard, multi-layered amorphous hydrocarbon layer with fractions of tungsten and tungsten carbides.
Es werden vorzugsweise Kegelrollenlager oder Zylinderrollenlager als Seilscheibenlager verwendet. Das heißt, die Wälzkörper sind bevorzugt entweder als Kegelrollen oder als Zylinderrollen ausgebildet. Tapered roller bearings or cylindrical roller bearings are preferably used as pulley bearings. That is, the rolling elements are preferably designed either as tapered rollers or as cylindrical rollers.
Des Weiteren ist es vorteilhaft, wenn die Beschichtung eine Schichtdicke von 0,2 m bis 10 μηι, insbesondere 0,5 m bis 4 m, aufweist. Unter Schichtdicke ist die gesamte aufgetragene Materialdicke zu verstehen, unabhängig davon, aus wie vielen verschiedenen Lagen die Beschichtung besteht. Es ist allerdings zweckmäßig, wenn die Beschichtung mehrlagig aufgebaut ist. Beispielsweise weist die mehrlagige Beschichtung mindestens eine Haftvermittlungsschicht und mindestens eine Funktionsschicht auf, wobei die Haftvermittlungs- schicht(en) metallhaltig ist/sind und die Funktionsschicht(en) eine wasserstoffhaltige amorphe Kohlenstoffschicht umfasst/umfassen. Die mindestens eine Haftvermittlungsschicht dient zur Verbesserung der Haftung der Beschichtung an der Oberfläche des Wälzkörpers und besteht vorzugsweise aus Metallen, deren Nitriden, Karbiden, metallhaltigen amorphen, wasserstoffhaltigen Kohlenstoffschichten oder Kombinatio- nen daraus. Die mindestens eine Funktionsschicht, welche auf die mindestens eine Haftvermittlerschicht aufgetragen wird, hingegen besteht vorzugsweise aus einer oder mehreren amorphen wasserstoffhaltigen Kohlenstoffschichten, die wahlweise ohne Dotierung oder mit Dotierung aus Metallen oder Nichtmetallen eingesetzt wird/werden. Dabei kann ein mehrlagiger Aufbau der Funktionsschicht vorliegen. Furthermore, it is advantageous for the coating to have a layer thickness of 0.2 μm to 10 μm, in particular 0.5 m to 4 m. Layer thickness means the total applied material thickness, regardless of how many different layers the coating consists of. However, it is expedient if the coating has a multilayer structure. By way of example, the multilayer coating has at least one adhesion-promoting layer and at least one functional layer, wherein the adhesion-promoting layer (s) is metal-containing and the functional layer (s) comprise / comprises a hydrogen-containing amorphous carbon layer. The at least one adhesion-promoting layer serves to improve the adhesion of the coating to the surface of the rolling element and preferably consists of metals, their nitrides, carbides, metal-containing amorphous, hydrogen-containing carbon layers or combinations thereof. The at least one functional layer, which is applied to the at least one adhesion promoter layer, on the other hand, preferably consists of one or more amorphous hydrogen-containing carbon layers, which is / are used optionally without doping or with doping of metals or non-metals. In this case, a multilayer structure of the functional layer can be present.
Ein mehrlagiger Aufbau einer Beschichtung ist beispielsweise aus der DE 10 2007 054 181 A1 bekannt. Des Weiteren können die einzelnen Schichten der Beschichtung, wie in der DE 10 2006 029 415 A1 , Nanopartikel aufweisen. A multilayer structure of a coating is known, for example, from DE 10 2007 054 181 A1. Furthermore, as in DE 10 2006 029 415 A1, the individual layers of the coating can have nanoparticles.
Des Weiteren ist es vorteilhaft, wenn jedes Seilscheibenlager mit zwei Dichtungen ausgebildet ist. Die Dichtungen dichten die Seilscheibenlager nach außen hin ab. Furthermore, it is advantageous if each pulley bearing is formed with two seals. The seals seal the pulley bearings outwards.
Weitere Einzelheiten, Merkmale, Merkmalskombinationen und Wirkungen auf der Basis der Erfindung ergeben sich aus der nachfolgenden Beschreibung bevorzugter, beispielhafter Ausführungsformen der Erfindung sowie aus den Zeichnungen. Diese zeigen in: Further details, features, combinations of features and effects on the basis of the invention will become apparent from the following description of preferred, exemplary embodiments of the invention and from the drawings. These show in:
Figur 1 eine erfindungsgemäße Seilscheibenlageranordnung im Schnittbild mit drei axial nebeneinander angeordneten Seilscheiben, 1 shows a cable pulley bearing arrangement according to the invention in a sectional view with three axially adjacent pulleys,
Figur 2 einen stark vergrößerten Ausschnitt aus Figur 1 , Figur 3 ein weiteres Seilscheibenlager im Schnittbild, und FIG. 2 shows a greatly enlarged detail from FIG. 1, Figure 3 shows another pulley bearing in the sectional view, and
Figur 4 eine Seilscheibenlageranordnung mit einer Kombination aus radial über- einander und axial nebeneinander angeordneten Seilscheiben. 4 shows a pulley bearing arrangement with a combination of radially above each other and axially adjacent pulleys.
In der Fig. 1 ist eine erfindungsgemäße Seilscheibenlageranordnung 1 im Schnittbild mit drei auf einer Welle 2 axial nebeneinander angeordneten Seilscheiben 3 dargestellt. Die Welle 2 dreht sich um ihre Drehachse 2a, wobei aufgrund ihrer Rotation- Symmetrie lediglich eine Hälfte der Seilscheibenanordnung 1 im Schnittbild dargestellt ist. Die Seilscheibenlageranordnung 1 umfasst gemäß Fig. 1 drei Seilscheibenlager 4, mittels denen die Seilscheiben 3 auf der Welle 2 gelagert sind. Alle drei Seilscheibenlager 4 sind identisch aufgebaut und hier jeweils als zweireihiges Kegelrollenlager mit O-Anordnung ausgebildet. Die Seilscheibenlager 4 weisen jeweils einen geteilten La- gerinnenring 5, einen geteilten Lageraußenring 6, eine Vielzahl dazwischen in zwei Reihen angeordneter Wälzkörper 7 sowie zwei Käfige 14, in denen die Wälzkörper 7 geführt werden, auf. Die Lagerinnenringe 5 weisen an beiden axialen Enden jeweils einen Lagerinnenringbord 8 auf. Die drei geteilten Lagerinnenringe 5 sind axial nebeneinander auf der Welle 2 angeordnet. Die zweiteiligen Lageraußenringe 6 stehen jeweils mit einer Seilscheibe 3 in direktem Kontakt. Die zwischen Lagerinnenring 5 und Lageraußenring 6 abrollenden Wälzkörper 7 sind als Kegelrollen ausgebildet. Die Wälzkörper 7 weisen jeweils eine Mantelflächen 10, eine größere Stirnseite 9 und eine kleinere Stirnseite 9' auf, wobei die größeren Stirnseiten 9 mittels einer kohlenstoffhaltigen Beschichtung 1 1 (siehe FIG 2) beschichtet sind. In Fig. 1, a pulley bearing assembly 1 according to the invention is shown in the sectional view with three on a shaft 2 axially adjacent pulleys 3. The shaft 2 rotates about its axis of rotation 2a, wherein due to their rotational symmetry, only one half of the pulley assembly 1 is shown in the sectional view. The pulley bearing assembly 1 according to FIG. 1 comprises three pulley bearings 4 by means of which the pulleys 3 are mounted on the shaft 2. All three pulley bearings 4 are identically constructed and designed here in each case as a double-row tapered roller bearing with O-arrangement. The pulley bearings 4 each have a divided bearing inner ring 5, a split bearing outer ring 6, a plurality of rolling elements 7 arranged therebetween in two rows and two cages 14 in which the rolling elements 7 are guided. The bearing inner rings 5 have at both axial ends in each case a Lagerinnenringbord 8. The three split bearing inner rings 5 are arranged axially next to one another on the shaft 2. The two-part bearing outer rings 6 are each in direct contact with a sheave 3. The rolling between the bearing inner ring 5 and bearing outer ring 6 rolling elements 7 are formed as tapered rollers. The rolling elements 7 each have a lateral surface 10, a larger end face 9 and a smaller end face 9 ' , wherein the larger end faces 9 by means of a carbon-containing coating 1 1 (see FIG 2) are coated.
In der Fig. 2 ist ein stark vergrößerter Ausschnitt der Fig. 1 dargestellt. Gleiche Bezugszeichen wie in Figur 1 kennzeichnen gleiche Elemente. Dieser Ausschnitt zeigt einen Teil des Lagerinnenringbords 8 und einen Teil eines Wälzkörpers 7. Des Weiteren ist hier eine mehrlagig aufgebaute Beschichtung 11 , die auf der größeren Stirnsei- te 9 des Wälzkörpers 7 aufgebracht ist, dargestellt. Die Beschichtung 1 1 umfasst eine Haftvermittlungsschicht 12, die direkt auf den Wälzkörper 7 aufgetragen ist, und weist einen Gradientenwerkstoff aus Chrom (Cr) / Wolframkarbid (WC) auf. Die Beschich- tung 1 1 umfasst weiterhin eine Funktionsschicht 13, welche direkt auf der Haftvermittlungsschicht 12 aufgebracht ist. Die Funktionsschicht 13 besteht aus einer mehrlagigen wasserstoffhaltigen amorphen Kohlenstoffschicht (angedeutet durch die gestrichelte Linie), die mit Wolfram dotiert ist. Des Weiteren beträgt die Schichtdicke Ds der Beschichtung 11 hier insgesamt 3 pm. 2, a greatly enlarged detail of FIG. 1 is shown. The same reference numerals as in Figure 1 denote the same elements. This detail shows a part of the bearing inner rim 8 and a part of a rolling element 7. Furthermore, a multi-layered coating 11, which is applied on the larger end face 9 of the rolling element 7, is shown here. The coating 11 comprises an adhesion-promoting layer 12, which is applied directly to the rolling element 7, and has a gradient material of chromium (Cr) / tungsten carbide (WC). The coating tion 1 1 further comprises a functional layer 13, which is applied directly to the adhesion-promoting layer 12. The functional layer 13 consists of a multilayered hydrogen-containing amorphous carbon layer (indicated by the dashed line), which is doped with tungsten. Furthermore, the layer thickness D s of the coating 11 here is 3 pm in total.
In der Fig. 3 ist ein weiteres beispielhaftes Seilscheibenlager 4 vergrößert im Schnittbild dargestellt. Gleiche Bezugszeichen wie in Figur 1 kennzeichnen gleiche Elemente. Auch hier ist aufgrund der Rotationssymmetrie lediglich eine Hälfte des Seilscheibenlagers 4 dargestellt. Dieses Seilscheibenlager 4 ist ebenfalls als Kegelrollenlager ausgebildet, wobei im Unterschied zu in Fig. 1 dargestellte Kegelrollenlager, der Lageraußenring 6 einteilig ausgebildet ist. Des Weiteren sind in diesem Ausführungsbeispiel eines Seilscheibenlagers 4 die Lagerringe 5, 6 partiell mit einer Beschichtung 11 beschichtet. Dabei sind nur die Flächen des Lagerinnenrings 5 beschichtet, die in Kontakt mit der größeren Stirnseite 9 der Wälzkörper 7 kommen. Es sind des Weiteren zwei Dichtungen 15 am Seilscheibenlager 4 angeordnet, die das Seilscheibenlager 4 nach außen hin abdichten. In Fig. 3, another exemplary pulley bearing 4 is shown enlarged in the sectional view. The same reference numerals as in Figure 1 denote the same elements. Again, due to the rotational symmetry, only one half of the pulley bearing 4 is shown. This pulley bearing 4 is also formed as a tapered roller bearing, wherein, in contrast to the tapered roller bearing shown in Fig. 1, the bearing outer ring 6 is integrally formed. Furthermore, in this exemplary embodiment of a cable pulley bearing 4, the bearing rings 5, 6 are partially coated with a coating 11. In this case, only the surfaces of the bearing inner ring 5 are coated, which come into contact with the larger end face 9 of the rolling elements 7. There are further arranged two seals 15 on the pulley bearing 4, which seal the pulley bearing 4 to the outside.
In der Fig. 4 ist eine erfindungsgemäße Seilscheibenlageranordnung 1 mit einer Kombination aus radial übereinander und axial nebeneinander angeordneten Seilscheiben 3 dargestellt. Diese Figur zeigt sehr schematisch den Aufbau eines Kompensationssystems für Öl- und Gasplattformen beziehungsweise für Schiffe. Seitlich sind jeweils zwei Seilscheiben 3 radial übereinander angeordnet. Jede der Seilscheiben 3 ist über ein Seilscheibenlager 4 auf einer Welle 2 gelagert. Oberhalb der vier Seilscheiben 3 sind mittig zwischen den vier seitlichen Seilscheiben 3 mehrere Seilscheiben 3 auf einer Welle 2 axial nebeneinander angeordnet. Die Wälzkörper 7 der Seilscheibenlager 4 sind dabei mit einer wie in Fig. 2 beschriebenen Beschichtung 11 versehen. Bezugszeichenliste Seilscheibenlageranordnung FIG. 4 shows a cable pulley bearing arrangement 1 according to the invention with a combination of pulleys 3 arranged radially one above the other and axially next to one another. This figure shows very schematically the structure of a compensation system for oil and gas platforms or for ships. Each side two pulleys 3 are arranged radially one above the other. Each of the sheaves 3 is mounted on a shaft 2 via a pulley bearing 4. Above the four sheaves 3, a plurality of sheaves 3 are arranged on a shaft 2 axially adjacent to each other centrally between the four lateral sheaves 3. The rolling elements 7 of the pulley bearings 4 are provided with a coating 11 as described in FIG. List of reference pulley bearing arrangement
Welle wave
a Drehachse der Welle a rotation axis of the shaft
Seilscheibe  sheave
Seilscheibenlager  Cable sheave bearings
Lagerinnenring  Bearing inner ring
Lageraußenring  Bearing outer ring
Wälzkörper  rolling elements
Lagerinnenringbord Bearing inner ring rib
, 9' Stirnseiten eines Wälzkörpers , 9 ' faces of a rolling element
0 Mantelfläche eines Wälzkörpers 0 lateral surface of a rolling element
1 Beschichtung1 coating
2 Haftvermittlungsschicht2 adhesion layer
3 Funktionsschicht3 functional layer
4 Käfig4 cage
5 Dichtung s Schichtdicke der Beschichtung 5 Seal s Layer thickness of the coating

Claims

Patentansprüche claims
1 . Seilscheibenlageranordnung (1 ) mit mindestens zwei Seilscheiben (3), wobei jede Seilscheibe (3) mittels eines zweireihigen Seilscheibenlagers (4) gelagert ist, das einen Lagerinnenring (5) mit an jedem seiner beiden axialen Enden ausgebildeten Bord (8), einen Lageraußenring (6), eine Vielzahl dazwischen angeordneter Wälzkörper (7) umfassend zwei Stirnseiten und weiterhin zwei Käfige (14), die die Wälzkörper (7) führen, aufweist, wobei der Lagerinnenring (5) auf einer Welle (2) angeordnet ist, und wobei die Wälzkörper (7) und/oder der Lagerinnenring (5) zumindest in einem Kontaktbereich, in welchem eine Stirnseite (9, 9') in Kontakt zu dem Lagerinnenring (5) steht, eine Beschichtung (1 1 ) umfassend eine amorphe Kohlenstoffschicht aufweisen. 1 . Cable pulley bearing arrangement (1) having at least two pulleys (3), each pulley (3) being mounted by means of a double-row pulley bearing (4) having a bearing inner ring (5) with a rim (8) formed at each of its two axial ends, a bearing outer ring (3). 6), a plurality of interposed rolling elements (7) comprising two end faces and further two cages (14) which guide the rolling elements (7), wherein the bearing inner ring (5) on a shaft (2) is arranged, and wherein the Rolling body (7) and / or the bearing inner ring (5) at least in a contact region in which an end face (9, 9 ' ) is in contact with the bearing inner ring (5), a coating (1 1) comprising an amorphous carbon layer.
2. Seilscheibenlageranordung (1 ) nach Anspruch 1 , dadurch gekennzeichnet, dass die Beschichtung (1 1 ) eine wasserstoffhaltige amorphe Kohlenstoffschicht aufweist, die mit mindestens einem Metall dotiert ist. 2. pulley bearing arrangement (1) according to claim 1, characterized in that the coating (1 1) comprises a hydrogen-containing amorphous carbon layer which is doped with at least one metal.
3. Seilscheibenlageranordung (1 ) nach Anspruch 2, dadurch gekennzeichnet, dass die amorphe Kohlenstoffschicht als Metalldotierung Wolfram vorgesehen ist. 3. pulley bearing arrangement (1) according to claim 2, characterized in that the amorphous carbon layer is provided as metal doping tungsten.
4. Seilscheibenlageranordung (1 ) nach einem der vorangehenden Ansprüche, dadurch gekennzeichnet, dass die Wälzkörper (7) der Seilscheibenlager (4) als Kegelrollen ausgebildet sind. 4. pulley bearing arrangement (1) according to one of the preceding claims, characterized in that the rolling bodies (7) of the pulley bearing (4) are formed as tapered rollers.
5. Seilscheibenlageranordung (1 ) nach einem der Ansprüche 1 bis 3, dadurch gekennzeichnet, dass die Wälzkörper (7) der Seilscheibenlager (4) als Zylinderrollen ausgebildet sind. 5. Seilscheibenlageranordung (1) according to one of claims 1 to 3, characterized in that the rolling elements (7) of the pulley bearing (4) are designed as cylindrical rollers.
6. Seilscheibenlageranordung (1 ) nach einem der vorangehenden Ansprüche, dadurch gekennzeichnet, dass die Beschichtung (1 1 ) eine Schichtdicke (Ds) von 0,2 μΓΠ bis 10 μΓΠ, insbesondere 0,5 μηι bis 4 μιτι, aufweist. 6. pulley bearing arrangement (1) according to one of the preceding claims, characterized in that the coating (1 1) has a layer thickness (Ds) from 0.2 μΓΠ to 10 μΓΠ, in particular 0.5 μηι to 4 μιτι having.
Seilscheibenlageranordung (1 ) nach einem der vorangehenden Ansprüche, dadurch gekennzeichnet, dass die Beschichtung (1 1 ) mehrlagig aufgebaut ist. Sheave bearing assembly (1) according to one of the preceding claims, characterized in that the coating (1 1) is constructed in multiple layers.
Seilscheibenlageranordung (1 ) nach Anspruch 7, dadurch gekennzeichnet, dass die mehrlagige Beschichtung (1 1 ) mindestens eine Haftvermittlungsschicht (12) und mindestens eine Funktionsschicht (13) aufweist, wobei die mindestens eine Haftvermittlungsschicht (12) metallhaltig ist und die Funktionsschicht (13) mindestens eine wasserstoffhaltige amorphe Kohlenstoffschicht umfasst. A pulley bearing arrangement (1) according to claim 7, characterized in that the multilayer coating (11) has at least one adhesion-promoting layer (12) and at least one functional layer (13), wherein the at least one adhesion-promoting layer (12) contains metal and the functional layer (13) comprises at least one hydrogen-containing amorphous carbon layer.
Seilscheibenlageranordung nach einem der vorangehenden Ansprüche, dadurch gekennzeichnet, dass jedes Seilscheibenlager (4) mit zwei Dichtungen (15) ausgebildet ist. Pulley bearing arrangement according to one of the preceding claims, characterized in that each pulley bearing (4) is formed with two seals (15).
PCT/DE2017/100008 2016-02-12 2017-01-05 Cable sheave bearing assembly WO2017137027A1 (en)

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DE102016202149.4 2016-02-12

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DE102018125631A1 (en) * 2018-10-16 2020-04-16 Schaeffler Technologies AG & Co. KG Layer system, rolling element and process

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US20030185478A1 (en) * 2002-04-02 2003-10-02 The Timken Company Full complement antifriction bearing
WO2006101989A1 (en) * 2005-03-18 2006-09-28 The Timken Company Method of protecting rolling element bearings against oil-out conditions and bearing made thereby
DE102006029415A1 (en) 2006-06-27 2008-01-03 Schaeffler Kg Wear-resistant coating and manufacturing method thereof
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