WO1990008906A1 - Joint de roulement - Google Patents

Joint de roulement Download PDF

Info

Publication number
WO1990008906A1
WO1990008906A1 PCT/GB1990/000123 GB9000123W WO9008906A1 WO 1990008906 A1 WO1990008906 A1 WO 1990008906A1 GB 9000123 W GB9000123 W GB 9000123W WO 9008906 A1 WO9008906 A1 WO 9008906A1
Authority
WO
WIPO (PCT)
Prior art keywords
assembly
sealing means
bearing member
links
bearing
Prior art date
Application number
PCT/GB1990/000123
Other languages
English (en)
Inventor
Alan Hodgson
Original Assignee
Huwood 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 Huwood Limited filed Critical Huwood Limited
Publication of WO1990008906A1 publication Critical patent/WO1990008906A1/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
    • 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
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65G—TRANSPORT OR STORAGE DEVICES, e.g. CONVEYORS FOR LOADING OR TIPPING, SHOP CONVEYOR SYSTEMS OR PNEUMATIC TUBE CONVEYORS
    • B65G17/00—Conveyors having an endless traction element, e.g. a chain, transmitting movement to a continuous or substantially-continuous load-carrying surface or to a series of individual load-carriers; Endless-chain conveyors in which the chains form the load-carrying surface
    • B65G17/30—Details; Auxiliary devices
    • B65G17/38—Chains or like traction elements; Connections between traction elements and load-carriers
    • 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
    • F16C11/00—Pivots; Pivotal connections
    • F16C11/04—Pivotal connections
    • F16C11/045—Pivotal connections with at least a pair of arms pivoting relatively to at least one other arm, all arms being mounted on one pin
    • 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
    • F16G—BELTS, CABLES, OR ROPES, PREDOMINANTLY USED FOR DRIVING PURPOSES; CHAINS; FITTINGS PREDOMINANTLY USED THEREFOR
    • F16G13/00—Chains
    • 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
    • F16G—BELTS, CABLES, OR ROPES, PREDOMINANTLY USED FOR DRIVING PURPOSES; CHAINS; FITTINGS PREDOMINANTLY USED THEREFOR
    • F16G13/00—Chains
    • F16G13/02—Driving-chains
    • 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
    • F16G—BELTS, CABLES, OR ROPES, PREDOMINANTLY USED FOR DRIVING PURPOSES; CHAINS; FITTINGS PREDOMINANTLY USED THEREFOR
    • F16G13/00—Chains
    • F16G13/02—Driving-chains
    • F16G13/06—Driving-chains with links connected by parallel driving-pins with or without rollers so called open links
    • 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
    • F16G—BELTS, CABLES, OR ROPES, PREDOMINANTLY USED FOR DRIVING PURPOSES; CHAINS; FITTINGS PREDOMINANTLY USED THEREFOR
    • F16G13/00—Chains
    • F16G13/12—Hauling- or hoisting-chains so called ornamental chains
    • F16G13/14—Hauling- or hoisting-chains so called ornamental chains built up from readily-separable links
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65G—TRANSPORT OR STORAGE DEVICES, e.g. CONVEYORS FOR LOADING OR TIPPING, SHOP CONVEYOR SYSTEMS OR PNEUMATIC TUBE CONVEYORS
    • B65G2201/00—Indexing codes relating to handling devices, e.g. conveyors, characterised by the type of product or load being conveyed or handled
    • B65G2201/02—Articles

Definitions

  • the present invention relates to bearing seals and in particular to seals for pivotal bearings.
  • conveyor drive chains which includes pivotal bearings, as for example in conveyor drive chains, especially those used for bulk material as for example in various mining operations, is exposed to particularly severe operating conditions including exposure to contamination with extraneous particulate material such as coal dust in the case of coal mining machinery.
  • Conventional conveyor drive chains in particular include a large number of bearing surfaces since each link in the chain is connected to neighbouring links by two pivot pins, and each of these bearing surfaces is exposed to ingress of foreign, more or less abrasive, matter and hence to wear resulting in loss of performance and eventual failure of the chain.
  • Such drive chains are moreover subjected to relatively high loadings and tensions so that the ingress of foreign matter to the bearing surfaces results in particularly rapid wear and pin hole elongation which leads to rapid slackening of the chain and in turn to further problems such as chain disengagement from drive sprockets etc., due to the limited stretch of the known chains.
  • a further problem that can arise with twin or parallel drive chains in the case of differential wear of the pins and/or bushes is that of loss of align ⁇ ment of cross flights or paddles mounted across the chains, which are normally, required to be maintained square with respect to the drive chains for proper entrainment of bulk material etc.
  • the present invention provides a sealed pivotal bearing assembly comprising a pivot pin or shaft mounted in an annular bearing member for pivotal displacement through a limited angle relative thereto, an annular sealing means in the form of a resiliently torsionally deformable collar means having first and second annular portions fixedly secured in substantially fluid tight manner, directly or indirectly to respective ones of said bearing member and said pivot pin or shaft thereby to seal across a bearing interface therebetween, whereby in use of the assembly said pivot pin or shaft may be pivotally displaced relative to said bearing member whilst maintaining a substantially fluid-tight seal around the bearing interface therebetween.
  • the sealing means may be made of any suitable resiliently torsionally deformable material including polymeric materials and especially natural or synthetic rubber.
  • the sealing means may be fixedly secured to the pivot pins or shafts and to the bearing members by any one or more of mechanical interlocking, interference fit therebetween, and by means of the use of suitable adhesives adapted for bonding between the bush material e.g. rubber and the pin material e.g. steel.
  • Any suitable form of mechanical interlocking may be employed including various non-circular section pins and bushes e.g.
  • polygonal including splined, as well as substantially circular but with a suitable keyway for insertion of a key between the pin and bush, the interlocking surfaces being a close fit such as to prevent passage of material therebetween during pivoting in use of the pivotal bearing.
  • annular sealing collar may have an axial end face or a radially, inward or outward (as appropriate) , surface secured to the respective one of the relatively moving parts.
  • the present invention provides a drive chain having a pivotal bearing assembly seal of the invention.
  • chain links may be used in a drive chain of the invention including on the one hand chain links which are all substantially similar and on the other hand alternating main links and connecting links. Also there may be used sealing means at all the interfaces between links and pins, or only at some of them, with the pins being non-rotatably secured e.g. by clamping, welding, etc., at the others.
  • conveyor drive chain including drive chains having flight bars and/or conveyor buckets connected thereto and systems having twin or parallel drive chains with flight bars or buckets connected thereto.
  • the present invention extends to a conveyor suitable for use in the conveying of bulk material and having a conveyor drive chain with pivotal bearing seals of the invention.
  • Fig. 1 is a partially cut. away side elevation of part of a conveyor chain with bearing assembly seals of the present invention
  • Fig. 2 is a longitudinal horizontal section through the chain of Fig. 1; and Fig. 3 is a corresponding view of a modified embodiment.
  • Fig. 1 shows a drive chain 1, comprising a plurality of main chain links to interconnected by connecting links 3, the connecting links and main chain links being pivotally connected to each other by pivot pins 4.
  • the main chain links 2 are fixedly secured, e.g. by welding 5 to the pivot pins 4 at their outermost ends 6 so as to be non- rotatable relative thereto.
  • the connecting links 3 are provided with annular bearing bushes 7 at each end 8 for pivotally supporting 9 the pivot pins 4.
  • An annular recess 10 is provided in the outer side face 11 of the connecting link 3 at each end 12 of the bearing bush 7.
  • each annular recess 10 is disposed a bearing seal in the form of an annular collar 13 of a resiliently deformable material such as rubber.
  • the radially inward surface 14 of the collar 13 is fixedly secured to the outer cylindrical surface 15 of the pivot pin 4, whilst the radially outward surface 16 of the collar 13 is fixedly secured to the connectinglink 3 at the outer cylindrical face 17 of the annular recess 10.
  • the collar may be secured to the pin and connecting link by any suitable means, for example a metal to rubber adhesive.
  • Fig. 3 shows a generally similar drive chain in which like parts corresponding to those in the embodiment of Figs. 1 and 2 have been indicated by like reference numbers.
  • the axially inner and outer end faces 18, 19 of the collar seal 13 are secured to respective opposed side faces 20, 21 of the annular recess 10 of the connecting link 3, and the main connecting link 2.
  • This arrangement also provides a complete sealing in of the bearing bush 7 where the pivot pin 4 is secured to the main chain link 2 by a fluid tight joint 5 formed, for example by welding.
  • the axial end faces 18, 19 of the collar seal 13 are secured against movement relative to the connecting link and main link 3, 2 respectively, relative pivotal movement between these two parts being permitted via torsional deformation of the collar seal 13 between the axial end faces 18, 19 thereof.
  • the present invention provides a particularly secure bearing seal in a relatively simple and economic manner.
  • Figs. 4a, b, c show sections of seals 13 which are provided with various forms of first and second, more or less lightweight, protective metal pressing elements 22, 23 fixedly secured to opposite side faces 14, 16 or 18, 19 of the resiliently deformable main body 24 of the seal 13, and fixedly securable in turn to respective ones of the relatively movable bearing member and pivot pin or shaft (not shown) .
  • the protecting elements 22, 23 may extend around, though not secured to, other faces 25 of the main body 24 of the seal 13, which faces 25 are subjected to deformation upon relative displace ⁇ ment of said opposite side faces 14, 16 or 18, 19 secured in use (via the protective elements 22, 23) to the bearing member and pivot pin or shaft.
  • torsion seals of the invention may be used in a wide variety of pin-bearing member chains and a number of different types are shown in Figs. 5 to 8.
  • various suitable forms of bearing may be used including not only plain bush elements 7, but also roller bearings e.g. needle bearings or ball bearings 26 as shown in Fig. 5.
  • the torsion seals of the invention may conveniently be formed and arranged to operate within predetermined angular displacement limits e.g. up 10°, up to 20°, or up to 30°.
  • the pivot pin or shaft and the bearing member are desirably provided with interengaging stops forlimiting their relative angular displacement, for example, as shown in Figs.
  • main chain links 2 are provided with angularly spaced apart opposed stops 27, 28 projecting generally radially of the pivot pin 4 rotational axis X - X and the connecting links 3 are provided with a single stop 29 disposed between the opposed stops 27, 28 for interengagement with one or other thereof at the limits of the predetermined relative angular displacement of the links 2 , 3. In this way over- stressing and possible irreversible damage to the torsion seals 13 may be prevented.

Landscapes

  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Sealing Devices (AREA)

Abstract

La présente invention se rapporte à un ensemble de roulement à pivot hermétique (1) comprenant une tige de pivot (4) fixée dans un élément de roulement annulaire (7, 3) permettant le mouvement en rotation suivant un angle limité. Un moyen hermétique annulaire en forme de bague résiliente déformable en torsion (13) possède un premier et second segment annulaire (16, 14) fixés, d'une part, aux parties correspondantes de l'élément de roulement annulaire (7, 3) de façon à empêcher la pénétration de fluide, et d'autre part, à la tige pivot (4) de façon à rendre hermétique l'interface du roulement (9) de telle sorte que lors de l'utilisation de l'assemblage, la tige de pivot peut tourner par rapport à l'élément de roulement (7, 3) tout en maintenant un joint hermétique au fluide autour de l'interface de roulement (9).
PCT/GB1990/000123 1989-01-31 1990-01-26 Joint de roulement WO1990008906A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
GB8902046A GB2228298A (en) 1989-01-31 1989-01-31 Bearing seal
GB8902046.5 1989-01-31

Publications (1)

Publication Number Publication Date
WO1990008906A1 true WO1990008906A1 (fr) 1990-08-09

Family

ID=10650855

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/GB1990/000123 WO1990008906A1 (fr) 1989-01-31 1990-01-26 Joint de roulement

Country Status (5)

Country Link
CN (1) CN1044703A (fr)
AU (1) AU4950590A (fr)
GB (1) GB2228298A (fr)
WO (1) WO1990008906A1 (fr)
ZA (1) ZA90636B (fr)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0547405A2 (fr) * 1991-12-19 1993-06-23 Jörn GmbH Palier pivotant d'étanchéité
AT519723A1 (de) * 2017-02-23 2018-09-15 Franz Ruebig & Soehne Gmbh & Co Kg Förderkette zum Fördern von stückartigem oder rieselfähigem Fördergut

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6485116B1 (en) * 2000-08-21 2002-11-26 Caterpillar Inc. Joint assembly to resist galling
GB2604313B (en) * 2017-03-06 2022-11-16 Joy Global Underground Mining Llc Chain conveyor and link for same

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB360168A (en) * 1930-10-18 1931-11-05 Herle Maudslay Hordern Improvements in and relating to bearings or joints
FR1006333A (fr) * 1947-12-19 1952-04-22 Peugeot Freres Ets Chaîne de transmission perfectionnée
DE1016513B (de) * 1953-10-15 1957-09-26 Goetzewerke Abdichtung fuer die Gelenke von Gelenkketten und Verfahren zur ihrer Herstellung
DE1284769B (de) * 1964-01-16 1968-12-05 Kloeckner Humboldt Deutz Ag Dichtungsanordnung fuer den Spalt zwischen zwei gegeneinander-schwingenden, auf einem Bolzen angebrachten Maschinenteilen
DE1911794A1 (de) * 1968-03-11 1969-10-09 Saab Scania Ab Dichtung fuer oszillierende Drehbewegungen ausfuehrende Lager
DE2422693A1 (de) * 1974-05-10 1975-11-20 Orenstein & Koppel Ag Dichtung fuer kettengelenke insbesondere fuer eimer- oder becherketten

Family Cites Families (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CA987365A (en) * 1971-02-17 1976-04-13 Harold L. Reinsma Augmented crescent seal with compensating load ring
DE2250491B2 (de) * 1972-10-14 1974-08-22 Intertrac Viehmann & Co, 4640 Wattenscheid Dichtungsring für Gleisketten
DE2305722C2 (de) * 1973-02-06 1983-11-03 Kabushiki Kaisha Komatsu Seisakusho, Tokyo Abdichtung von Kettenbolzen bei Gleisketten
JPS5530779Y2 (fr) * 1975-09-17 1980-07-22
US4089531A (en) * 1977-09-01 1978-05-16 Caterpillar Tractor Co. Crescent seal with reinforcing ring
US4311346A (en) * 1979-06-29 1982-01-19 Fiat-Allis Construction Machinery, Inc. Track assembly hinge joint
JPS56501124A (fr) * 1979-09-14 1981-08-13

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB360168A (en) * 1930-10-18 1931-11-05 Herle Maudslay Hordern Improvements in and relating to bearings or joints
FR1006333A (fr) * 1947-12-19 1952-04-22 Peugeot Freres Ets Chaîne de transmission perfectionnée
DE1016513B (de) * 1953-10-15 1957-09-26 Goetzewerke Abdichtung fuer die Gelenke von Gelenkketten und Verfahren zur ihrer Herstellung
DE1284769B (de) * 1964-01-16 1968-12-05 Kloeckner Humboldt Deutz Ag Dichtungsanordnung fuer den Spalt zwischen zwei gegeneinander-schwingenden, auf einem Bolzen angebrachten Maschinenteilen
DE1911794A1 (de) * 1968-03-11 1969-10-09 Saab Scania Ab Dichtung fuer oszillierende Drehbewegungen ausfuehrende Lager
DE2422693A1 (de) * 1974-05-10 1975-11-20 Orenstein & Koppel Ag Dichtung fuer kettengelenke insbesondere fuer eimer- oder becherketten

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0547405A2 (fr) * 1991-12-19 1993-06-23 Jörn GmbH Palier pivotant d'étanchéité
EP0547405A3 (fr) * 1991-12-19 1994-01-26 Joern Gmbh
AT519723A1 (de) * 2017-02-23 2018-09-15 Franz Ruebig & Soehne Gmbh & Co Kg Förderkette zum Fördern von stückartigem oder rieselfähigem Fördergut
AT519723B1 (de) * 2017-02-23 2022-04-15 Franz Ruebig & Soehne Gmbh & Co Kg Förderkette zum Fördern von stückartigem oder rieselfähigem Fördergut

Also Published As

Publication number Publication date
AU4950590A (en) 1990-08-24
ZA90636B (en) 1990-10-31
CN1044703A (zh) 1990-08-15
GB8902046D0 (en) 1989-03-22
GB2228298A (en) 1990-08-22

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