WO2008069708A1 - Composant de palier et dispositif de palier comprenant le composant de palier - Google Patents

Composant de palier et dispositif de palier comprenant le composant de palier Download PDF

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Publication number
WO2008069708A1
WO2008069708A1 PCT/SE2006/001396 SE2006001396W WO2008069708A1 WO 2008069708 A1 WO2008069708 A1 WO 2008069708A1 SE 2006001396 W SE2006001396 W SE 2006001396W WO 2008069708 A1 WO2008069708 A1 WO 2008069708A1
Authority
WO
WIPO (PCT)
Prior art keywords
bearing
ring
bearing component
component according
fixing
Prior art date
Application number
PCT/SE2006/001396
Other languages
English (en)
Inventor
Johan Larsson
Fredrik LÜSCH
Original Assignee
Aktiebolaget Skf
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 Aktiebolaget Skf filed Critical Aktiebolaget Skf
Priority to PCT/SE2006/001396 priority Critical patent/WO2008069708A1/fr
Publication of WO2008069708A1 publication Critical patent/WO2008069708A1/fr

Links

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B02—CRUSHING, PULVERISING, OR DISINTEGRATING; PREPARATORY TREATMENT OF GRAIN FOR MILLING
    • B02C—CRUSHING, PULVERISING, OR DISINTEGRATING IN GENERAL; MILLING GRAIN
    • B02C17/00—Disintegrating by tumbling mills, i.e. mills having a container charged with the material to be disintegrated with or without special disintegrating members such as pebbles or balls
    • B02C17/18—Details
    • B02C17/181—Bearings specially adapted for tumbling mills
    • 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
    • F16C13/00—Rolls, drums, discs, or the like; Bearings or mountings therefor
    • F16C13/02—Bearings
    • F16C13/04—Bearings with only partial enclosure of the member to be borne; Bearings with local support at two or more points
    • 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
    • F16C32/00—Bearings not otherwise provided for
    • F16C32/06—Bearings not otherwise provided for with moving member supported by a fluid cushion formed, at least to a large extent, otherwise than by movement of the shaft, e.g. hydrostatic air-cushion bearings
    • F16C32/0662—Details of hydrostatic bearings independent of fluid supply or direction of load
    • F16C32/0666—Details of hydrostatic bearings independent of fluid supply or direction of load of bearing pads
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F27—FURNACES; KILNS; OVENS; RETORTS
    • F27B—FURNACES, KILNS, OVENS, OR RETORTS IN GENERAL; OPEN SINTERING OR LIKE APPARATUS
    • F27B7/00—Rotary-drum furnaces, i.e. horizontal or slightly inclined
    • F27B7/20—Details, accessories, or equipment peculiar to rotary-drum furnaces
    • F27B7/22—Rotary drums; Supports therefor
    • F27B7/2206—Bearing rings

Definitions

  • Bearing component and bearing arrangement comprising the bearing component
  • a bearing component is disclosed.
  • a bearing arrangement comprising the first aspect is disclosed.
  • a bearing component comprises a rotary and circular ring that has means allowing fixing to a mechanical element, wherein the means is intended to receive a fixing means for fixing in a direction essentially perpendicular in relation to a plane of the ring, and an outer radial surface of the ring which is a raceway to be radially supported by at least one non metal-to-metal contact bearing.
  • non metal-to- metal contact bearing is a segment, shoe or a pad of a hydrostatic or a hydrodynamic bearing with essentially the same shape as the shape of the supported surface of the ring.
  • the bearing component is a component intended to be supported by the non metal-to-metal contact bearing.
  • the bearing component offers an advantage of being easy to manufacture as compared to a construction comprising both the ring and the mechanical element. From a manufacturing viewpoint, it may be preferred to manufacture the bearing component, or the bearing arrangement, separately for later fixing to the mechanical element. Also, separate manufacturing is cheaper and does not take as long time . Factors influencing the difficulty related to manufacturing and transporting includes size of the mechanical element and the size of the bearing component. Another advantage is that by separately manufacturing the ring is that it is possible to optimize a seal contact surface when designing and mounting a seal for sealing a housing and the ring. Another advantage with separate manufacturing is that it is possible to manufacture a ring with higher tolerance leading to increased reliability.
  • a part of the radial outer surface is intended to be -supported by a non metal-to-metal contact bearing .
  • the outer radial surface presents a R A value, i.e. a measure of surface roughness, that is one of lower than 3.5, lower than 3.2, lower than 1.5, lower than 1.0, lower than 0.7, lower than 0.5, and lower than 0.4.
  • R A value i.e. a measure of surface roughness
  • the means allowing fixing to a mechanical element is at least 12 holes extending through the ring in axial direction.
  • the at least 12 holes extend through the metal material of the ring.
  • the means allowing fixing is not a through hole but an indentation, or a bottom hole, indicating where the hole is to be placed and the through hole may be forged e.g. when mounting to the mechanical element .
  • the at least 12 holes are placed asymmetrically in angular position.
  • the bearing component further comprises the fixing means, which is constituted by: -bolts,
  • the number of nuts is the same as the number of bolts.
  • bolts may be used to fix using a matching thread in the mechanical element.
  • nuts are used to fix the ring to the mechanical element .
  • the fixing means are constituted by bolts designed specifically for high torque applications such as propeller shafts, rudder assemblies, turbine generators, rolling mills and similar applications.
  • the bolts are designed to be inserted and removed with an initial clearance fit.
  • the bolts are threaded at both ends and have a tapered shank.
  • An expansion sleeve of each bolt with a corresponding tapered bore fits over the shank.
  • Two nuts are used for accomplishing the actual fixing from a corresponding side.
  • the outside of the sleeve is cylindrical and dimensioned for an initial clearance fit in the bolt hole corresponding to 0.05% to 0.15% of the bolt hole diameter.
  • the ring has an inner diameter larger than 1.600 meters. In an embodiment, the ring has an inner diameter in the interval 1.600 to 14 meters.
  • the thickness in axial direction of the ring is in the interval 0.085 to 0.600 meters.
  • the thickness in radial direction of the ring is in the interval 0.10 to 0.45 meters. In an embodiment, the thickness in radial direction is in the interval 0.15 to 0.40 meters. The thickness in radial direction of the ring is the same as half of the difference of the inner diameter and outer diameter.
  • the cross section of the ring has a rectangular shape.
  • the cross section, at the outer radial surface presents a shape having at least one radial recess or radial protrusion, the shape matching a shape of a load receiving portion of the at least one non metal-to-metal contact bearing.
  • the at least one non metal-to- metal contact bearing is one of a hydrostatic bearing, and a hydrodynamic bearing.
  • hydrostatic bearing includes a segmented hydrostatic bearing, a bearing having hydrostatic pads, and a shoe bearing.
  • the ring is hardened.
  • a bearing arrangement is disclosed. It comprises the first aspect, at least one non metal-to-metal contact bearing for supporting the bearing component, and an oil film supplying means. Having at least one non metal-to-metal contact bearing leads to easier and faster replacement of bearing components in case of failure. This also leads to shorter down time.
  • the oil film supplying means is responsive for providing a sliding oil contact between the outer radial surface and the non metal-to- metal contact bearing.
  • the number of non metal-to-metal contact bearings is two, three or more. They are located to support the ring.
  • the bearing arrangement comprises the mechanical element.
  • the mechanical element is a drum of a mill.
  • the other end of the mechanical element, in this case the drum may be supported by a bearing arrangement similar to the second aspect, or a ring similar to the first aspect .
  • the bearing arrangement further comprises a housing housing the bearing arrangement.
  • the bearing arrangement further comprises a seal sealing the housing and the ring.
  • FIG 2 a cross section view of the ring is given .
  • Figure 3A a schematic illustration of the radial and peripheral surface of the ring is given.
  • a bearing component 1 In Figures 1 and 2 , an embodiment of a bearing component 1 is given. It comprises a rotary and circular ring 3 that has means 5 allowing fixing to a mechanical element 7 (indicated in Figure 2 with dotted lines) , wherein the means 5 is intended to receive a fixing means 9 for fixing in a direction essentially perpendicular in relation to a plane of the ring. In Figure 2, this direction is indicated with two arrows marked 'F'.
  • the bearing component 1 further comprises an outer radial surface 11 of the ring 3 which is a raceway to be radially supported by at least one non metal-to- metal contact bearing 13. The outer radial surface 11 presents a R A value that is lower than 3.5.
  • the means 5 allowing fixing to a mechanical element 7 is at least 12 holes extending through the ring 3 in axial direction.
  • the at least 12 holes are placed symmetrically in. angular position of the ring 3.
  • the fixing means 9 is constituted by at least 12 bolts fixing the ring to the mechanical element via the at least 12 holes.
  • the ring 3 has an inner diameter in the interval 1.600 to 14 meters.
  • the thickness in axial direction of the ring 3 is in the interval 0.085 to 0.600 meters.
  • the thickness in radial direction of the ring 3 is in the interval 0.10 to 0.35 meters.
  • the cross section of the ring 3 has a rectangular shape, as shown in Figure 3A. Also in Figure 3A 7 the load receiving portion 15 of the at least one non metal-to-metal contact bearing 13 is indicated by a dotted line.
  • cross sections of the ring 3, at the outer radial surface present a shape having at least one radial recess or radial protrusion, the shape matching a load receiving portion 15 of the at least one non metal-to-metal contact bearing 13 and thereby allowing axial locking of the ring 3.
  • Non-limiting alternatives of designs accomplishing this are given in Figures 3B to 31, wherein the outer radial surface presents a recess 17 or radial protrusion 19 which is matched by a matching shape of the at least one on metal-to-metal contact bearing 13.
  • the matching shape of the at least one non metal-to-metal contact bearing 13 is shown in dotted lines in Figures 3B to 31.
  • a recess 17 or protrusion 19 extends fully around the periphery of the ring 3.
  • a bearing arrangement 21 comprising the bearing component 1 is given.
  • the two non metal- to-metal contact bearings 13 support the ring 3 symmetricalIy.
  • FIG 5 an embodiment of two bearing arrangements 21 and also comprising the mechanical element 7 is given.
  • a ring 3 of a first bearing arrangement A is fixed to the mechanical element 7 at one side thereof and a ring 3 of a second bearing arrangement B is fixed to another side of the mechanical element 7.
  • the two bearing arrangements 21 are identical.
  • the two bearing arrangements 21 differ in that one of them presents a recess or a protrusion, e.g. as shown in anyone of Figures 3B to 31 in order to provide a locking effect of the ring 3.
  • the mechanical element 7 is fixed to the rings using bolts 9, e.g. 'super grip bolts'.
  • the mechanical element 7 may be an application associated with high torque, such as a drum.

Landscapes

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

Abstract

L'invention concerne un composant de palier (1). Il comprend une bague rotative et circulaire (3) qui a des moyens (5) permettant la fixation à un élément mécanique (7), les moyens (5) étant destinés à recevoir des moyens de fixation (9) pour une fixation dans une direction (F) sensiblement perpendiculaire par rapport à un plan de la bague (3), et une surface radiale externe de la bague (3) qui est un chemin de roulement devant être supporté radialement par au moins un palier à non contact métal sur métal (13). L'invention concerne également un dispositif de palier (21) qui comprend le composant de palier (1), au moins un palier à non contact métal sur métal (13) pour supporter le composant de palier (1) et des moyens (23) de fourniture de film d'huile.
PCT/SE2006/001396 2006-12-07 2006-12-07 Composant de palier et dispositif de palier comprenant le composant de palier WO2008069708A1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
PCT/SE2006/001396 WO2008069708A1 (fr) 2006-12-07 2006-12-07 Composant de palier et dispositif de palier comprenant le composant de palier

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
PCT/SE2006/001396 WO2008069708A1 (fr) 2006-12-07 2006-12-07 Composant de palier et dispositif de palier comprenant le composant de palier

Publications (1)

Publication Number Publication Date
WO2008069708A1 true WO2008069708A1 (fr) 2008-06-12

Family

ID=39492450

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/SE2006/001396 WO2008069708A1 (fr) 2006-12-07 2006-12-07 Composant de palier et dispositif de palier comprenant le composant de palier

Country Status (1)

Country Link
WO (1) WO2008069708A1 (fr)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN112844652A (zh) * 2021-01-06 2021-05-28 邵阳学院 一种用于制备核壳结构粉体的卧式粉体碾压装置

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0669209A1 (fr) * 1994-02-25 1995-08-30 MAN Roland Druckmaschinen AG Support pour cylindres ou tambours dans les machines d'impression
DE19909254A1 (de) * 1999-03-03 2000-09-07 Meisner Werner Rollensystem für eine Rotationseinrichtung
US6543937B1 (en) * 2000-01-14 2003-04-08 Metso Paper, Inc. Axial fitting with sliding bearings of the roll mantle of a roll of a paper/board or finishing/converting machine

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0669209A1 (fr) * 1994-02-25 1995-08-30 MAN Roland Druckmaschinen AG Support pour cylindres ou tambours dans les machines d'impression
DE19909254A1 (de) * 1999-03-03 2000-09-07 Meisner Werner Rollensystem für eine Rotationseinrichtung
US6543937B1 (en) * 2000-01-14 2003-04-08 Metso Paper, Inc. Axial fitting with sliding bearings of the roll mantle of a roll of a paper/board or finishing/converting machine

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN112844652A (zh) * 2021-01-06 2021-05-28 邵阳学院 一种用于制备核壳结构粉体的卧式粉体碾压装置

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