WO1998034040A1 - Couvercle pare-poussiere pour frein - Google Patents

Couvercle pare-poussiere pour frein Download PDF

Info

Publication number
WO1998034040A1
WO1998034040A1 PCT/GB1998/000264 GB9800264W WO9834040A1 WO 1998034040 A1 WO1998034040 A1 WO 1998034040A1 GB 9800264 W GB9800264 W GB 9800264W WO 9834040 A1 WO9834040 A1 WO 9834040A1
Authority
WO
WIPO (PCT)
Prior art keywords
dust cover
brake
main portion
camshaft
opening
Prior art date
Application number
PCT/GB1998/000264
Other languages
English (en)
Inventor
David James Fanning
Original Assignee
Meritor Heavy Vehicle Systems Limited
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 Meritor Heavy Vehicle Systems Limited filed Critical Meritor Heavy Vehicle Systems Limited
Priority to AU57746/98A priority Critical patent/AU5774698A/en
Publication of WO1998034040A1 publication Critical patent/WO1998034040A1/fr

Links

Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16D—COUPLINGS FOR TRANSMITTING ROTATION; CLUTCHES; BRAKES
    • F16D51/00—Brakes with outwardly-movable braking members co-operating with the inner surface of a drum or the like
    • F16D51/16—Brakes with outwardly-movable braking members co-operating with the inner surface of a drum or the like shaped as brake-shoes pivoted on a fixed or nearly-fixed axis
    • F16D51/18—Brakes with outwardly-movable braking members co-operating with the inner surface of a drum or the like shaped as brake-shoes pivoted on a fixed or nearly-fixed axis with two brake-shoes
    • F16D51/20—Brakes with outwardly-movable braking members co-operating with the inner surface of a drum or the like shaped as brake-shoes pivoted on a fixed or nearly-fixed axis with two brake-shoes extending in opposite directions from their pivots
    • F16D51/22—Brakes with outwardly-movable braking members co-operating with the inner surface of a drum or the like shaped as brake-shoes pivoted on a fixed or nearly-fixed axis with two brake-shoes extending in opposite directions from their pivots mechanically actuated
    • 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
    • F16D—COUPLINGS FOR TRANSMITTING ROTATION; CLUTCHES; BRAKES
    • F16D51/00—Brakes with outwardly-movable braking members co-operating with the inner surface of a drum or the like
    • F16D2051/001—Parts or details of drum brakes
    • F16D2051/005—Protective covers
    • 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
    • F16D—COUPLINGS FOR TRANSMITTING ROTATION; CLUTCHES; BRAKES
    • F16D2125/00—Components of actuators
    • F16D2125/18—Mechanical mechanisms
    • F16D2125/20—Mechanical mechanisms converting rotation to linear movement or vice versa
    • F16D2125/22—Mechanical mechanisms converting rotation to linear movement or vice versa acting transversely to the axis of rotation
    • F16D2125/28—Cams; Levers with cams
    • F16D2125/30—Cams; Levers with cams acting on two or more cam followers, e.g. S-cams
    • 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
    • F16D—COUPLINGS FOR TRANSMITTING ROTATION; CLUTCHES; BRAKES
    • F16D2125/00—Components of actuators
    • F16D2125/18—Mechanical mechanisms
    • F16D2125/44—Mechanical mechanisms transmitting rotation
    • F16D2125/56—Shafts for transmitting torque directly
    • 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
    • F16D—COUPLINGS FOR TRANSMITTING ROTATION; CLUTCHES; BRAKES
    • F16D51/00—Brakes with outwardly-movable braking members co-operating with the inner surface of a drum or the like

Definitions

  • This invention relates to brake dust covers, for example dust covers for brakes fitted to axles for trailer vehicles, which are conventionally fitted with S cam operated internal expanding shoe and drum brakes.
  • dust covers for such brakes comprise two half covers.
  • the inner periphery of each half cover extends around approximately half the periphery of the axle beam and the outer periphery is lipped to fit with running clearance over a shoulder on the brake drum to minimise ingress of water and foreign matter.
  • One half cover has a cut out portion to enable it to be passed over the brake camshaft.
  • the half covers are secured to the brake anchor bracket with screws and they overlap a small amount at their radially extending edges.
  • the dust cover has to be removed to gain access to the camshaft bearing which is fitted at the brake anchor bracket, for servicing and replacement.
  • a brake dust cover characterised in that it comprises a main portion having an inner periphery which in use extends around about half of an axle beam, an outer periphery which extends to opposed extremities, which are separated by an arc of no more than 90 degrees centred on the axis of the axle beam, and an opening provided between the corresponding ends of the inner periphery and the opposed extremities, and a minor portion adapted to overlap and bridge the opening and be secured to the main portion, the minor portion conforming to the profile of the main portion where it overlaps and having an opening to receive a camshaft, the arrangement being such that when the camshaft has been removed a bearing assembly for the camshaft secured to a brake anchor bracket can be released and withdrawn through the opening in the minor portion without disturbing the dust cover.
  • the arc over which the outer periphery extends will vary dependant on the diameter of the dust cover and the width of the camshaft bearing.
  • a dust cover in accordance with the present invention provides a more rigid assembly than the prior art and facilitates servicing of the axle to which it is fitted.
  • An embodiment of the invention also comprises an axle assembly fitted with a dust cover as set out herein.
  • Figure 1 is an exploded view of parts of an axle assembly illustrating a prior art dust cover
  • Figure 2 is a plan view of a main portion of a dust cover in accordance with the present invention.
  • Figure 3 is a view on line A-A of Figure 2;
  • Figure 4 is a plan view of a minor portion of the dust cover according to the present invention.
  • Figure 5 is a section on line D-D of Figure 4.
  • Figure 6 is a view on the lower surface of Figure 4
  • Figure 7 is a view on arrow J of Figure 4.
  • an axle beam 1 has a brake anchor bracket 2 secured to it.
  • a brake camshaft 3 is supported in bearings in, or secured to, anchor bracket 2 and a mounting 4.
  • Brake shoes 5, 6 pivot on anchor pins, as 7, at one end and have cam rollers (not shown) at their lower (not shown) ends for engagement with the S cam on camshaft 3.
  • a dust cover of a known kind comprises two halves 8, 9, the latter of which has a cut out 11 to enable it to be fitted over the camshaft 3 for assembly to the brake anchor bracket 2.
  • a main portion 12 has an inner periphery 12 which can fit over the axle beam and an opening 12 1 extends from the inner periphery to the extremities of an outer periphery 12 m and is sufficiently wide to allow servicing access to the camshaft bearing at the brake anchor bracket, for example as 2 on Figure 1 or as described and claimed in our prior British Patent No. EP 0504238.
  • Main portion 12 has two radially extending slots 13 and holes 14, 15 and 16. Holes 15 register with corresponding tapped holes in the brake anchor bracket to receive screws to secure the main portion to the anchor bracket.
  • Figures 4 to 7 illustrate a minor portion 17 of the dust cover having an opening 18 which, in this case, is designed to fit over a housing portion of a camshaft bearing secured to an anchor bracket.
  • Two pins 19 are mounted on the minor portion 17 to be received in the holes 16 in the main portion 12 and holes 21 are provided to register with holes 14 of the main portion for securing the minor portion to the main portion.
  • the pins 19 may be screw threaded to receive nuts to secure aadditionslall the minor portion to the main portion.
  • the minor portion 17 may have holes, asl5 in hemain portion, to register with tapped holes in the brake anchor bracket so as to secure the minor portion to the brake anchor bracket.
  • the opening 18 in the minor portion 17 allows access to the camshaft bearing securing screws. Following removal of the camshaft, for example after removal of the brake drum, the camshaft bearing can be released and removed via the opening 18 without disturbing the dust cover.
  • the minor portion 17 can be released from the main portion 12 to allow removal of the camshaft and bearing assembly, as described in E.P. 0504238

Landscapes

  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Braking Arrangements (AREA)

Abstract

L'invention concerne un couvercle pare-poussière pour frein, destiné par exemple à recouvrir une mâchoire à expansion interne et un frein à tambour montés sur l'essieu d'un véhicule à remorque et commandés par une came en S sur un arbre à came, comprenant une partie principale (12) et une partie secondaire (17). La partie principale (12) comporte un pourtour interne (121) qui s'étend autour environ de la moitié de la poutre de l'essieu auquel la partie est fixée en vue d'une utilisation, un pourtour externe (12111) qui s'étend jusqu'aux extrémités opposées séparées par un arc inférieur à 90° centré sur l'axe de la poutre de l'essieu et une ouverture (1211) partant du pourtour interne vers l'extérieur, permettant l'accès, par exemple, à un palier d'arbre à cames depuis le support de fixation du frein sur la poutre de l'essieu. La partie secondaire (17) chevauche et enjambe l'ouverture (1211) et est fixée à la partie principale (12). Son profil coïncide avec celui de la partie principale où il y a un chevauchement. Une ouverture (18) dans la partie secondaire (17) peut recevoir un arbre à cames et, lorsque ledit arbre a été retiré, l'ouverture permet de retirer le palier d'arbre à cames sans toucher au couvercle pare-poussière.
PCT/GB1998/000264 1997-01-30 1998-01-28 Couvercle pare-poussiere pour frein WO1998034040A1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
AU57746/98A AU5774698A (en) 1997-01-30 1998-01-28 Brake dust covers

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
GB9701903.8 1997-01-30
GBGB9701903.8A GB9701903D0 (en) 1997-01-30 1997-01-30 Brake dust covers

Publications (1)

Publication Number Publication Date
WO1998034040A1 true WO1998034040A1 (fr) 1998-08-06

Family

ID=10806821

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/GB1998/000264 WO1998034040A1 (fr) 1997-01-30 1998-01-28 Couvercle pare-poussiere pour frein

Country Status (4)

Country Link
AU (1) AU5774698A (fr)
GB (2) GB9701903D0 (fr)
WO (1) WO1998034040A1 (fr)
ZA (1) ZA98750B (fr)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2007076986A1 (fr) 2005-12-23 2007-07-12 Kabelschlepp Gmbh Element de chaine dote d'une liaison articulee multixaxe
DE202008008358U1 (de) 2008-06-24 2008-08-21 Kabelschlepp Gmbh Kettenglied mit Drehgelenk-Quersteg
US7634900B2 (en) 2003-10-08 2009-12-22 Kabelschlepp Gmbh Link plate, chain link, energy guiding chain, and intermediate piece for an energy guiding chain, provided with locking means coupled by torsion for connecting a flight to a link plate
DE102008060466A1 (de) 2008-12-05 2010-06-10 Kabelschlepp Gmbh Kettenglied für eine Energieführungskette und Verfahren zur Herstellung eines Quersteges für ein solches Kettenglied

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2971731B1 (fr) * 2011-02-18 2013-03-15 Gourdon Freres Essieu de remorque integrant une assistance a la motricite et un systeme de freinage compacts
CN106195265B (zh) * 2016-08-31 2018-02-09 中国铁道科学研究院 防尘罩及轨道交通车辆的制动单元

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2284357A (en) * 1940-01-19 1942-05-26 Charles S Ash Dual wheeled vehicle
US4164273A (en) * 1977-10-27 1979-08-14 Enon Valley Industries, Inc. Resilient shield for vehicle wheel brake assemblies
WO1991009235A1 (fr) * 1989-12-07 1991-06-27 Rubery Owen-Rockwell Limited Ensemble de frein et de support d'essieu de vehicules

Family Cites Families (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB871737A (en) * 1956-10-10 1961-06-28 Massey Ferguson Ltd Improvements in or relating to sealing means for vehicle brakes

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2284357A (en) * 1940-01-19 1942-05-26 Charles S Ash Dual wheeled vehicle
US4164273A (en) * 1977-10-27 1979-08-14 Enon Valley Industries, Inc. Resilient shield for vehicle wheel brake assemblies
WO1991009235A1 (fr) * 1989-12-07 1991-06-27 Rubery Owen-Rockwell Limited Ensemble de frein et de support d'essieu de vehicules
EP0504238A1 (fr) * 1989-12-07 1992-09-23 Rubery Owen Rockwell Ltd Ensemble de frein et de support d'essieu de vehicules.

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US7634900B2 (en) 2003-10-08 2009-12-22 Kabelschlepp Gmbh Link plate, chain link, energy guiding chain, and intermediate piece for an energy guiding chain, provided with locking means coupled by torsion for connecting a flight to a link plate
WO2007076986A1 (fr) 2005-12-23 2007-07-12 Kabelschlepp Gmbh Element de chaine dote d'une liaison articulee multixaxe
US8196384B2 (en) 2005-12-23 2012-06-12 Tsubaki Kabelschlepp GmbH Chain link having a multi-axis link joint
DE202008008358U1 (de) 2008-06-24 2008-08-21 Kabelschlepp Gmbh Kettenglied mit Drehgelenk-Quersteg
DE102008060466A1 (de) 2008-12-05 2010-06-10 Kabelschlepp Gmbh Kettenglied für eine Energieführungskette und Verfahren zur Herstellung eines Quersteges für ein solches Kettenglied

Also Published As

Publication number Publication date
AU5774698A (en) 1998-08-25
GB9801678D0 (en) 1998-03-25
ZA98750B (en) 1998-07-28
GB9701903D0 (en) 1997-03-19
GB2321680B (en) 2000-08-16
GB2321680A (en) 1998-08-05

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