WO1999005430A1 - Chaine - Google Patents

Chaine Download PDF

Info

Publication number
WO1999005430A1
WO1999005430A1 PCT/GB1998/002111 GB9802111W WO9905430A1 WO 1999005430 A1 WO1999005430 A1 WO 1999005430A1 GB 9802111 W GB9802111 W GB 9802111W WO 9905430 A1 WO9905430 A1 WO 9905430A1
Authority
WO
WIPO (PCT)
Prior art keywords
pins
link
chain according
pair
adjacent
Prior art date
Application number
PCT/GB1998/002111
Other languages
English (en)
Inventor
Michael Charles Christmas
Original Assignee
Renold Plc
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
Priority claimed from GBGB9715764.8A external-priority patent/GB9715764D0/en
Priority claimed from GBGB9721016.5A external-priority patent/GB9721016D0/en
Application filed by Renold Plc filed Critical Renold Plc
Priority to AU84489/98A priority Critical patent/AU8448998A/en
Publication of WO1999005430A1 publication Critical patent/WO1999005430A1/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
    • 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
    • F16G13/02—Driving-chains
    • F16G13/04—Toothed 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
    • F16G13/07—Driving-chains with links connected by parallel driving-pins with or without rollers so called open links the links being of identical shape, e.g. cranked

Definitions

  • the present invention relates to a chain of the kind that is used, generally in combination with a sprocket, in drive or lifting mechanisms etc.
  • a conventional roller chain that is generally used in such applications comprises pairs of opposed inner link plates interspersed along the length of the chain by pairs of opposed outer link plates.
  • Each outer link overlies the adjacent ends of neighbouring inner links such that an aperture at each end of the outer link is aligned with an corresponding aperture in the end of the underlying inner link plate.
  • the inner and outer link plates are interconnected on opposite sides of the chain by means of a pin that passes through the aligned apertures on each side. The pin is fixed at each end to the opposed outer link plate but is pivotal relative to the inner link plates within a bush that extends between opposed apertures in the inner link plates.
  • a chain comprising a plurality of interconnected and pivotal link assemblies, each link assembly comprising a pair of opposed link plates each of which has at least one pin that projects towards the opposing link plate, wherein opposed link plates are interconnected by means of a housing that receives and retains adjacent pins.
  • the housing engages each of the adjacent pins to retain them therein.
  • the housing is in the form of a roller that is rotatable about the adjacent pins.
  • At least a pair of pins comprising one pin from each link assembly of adjacent link assemblies may be received in the housing, the pair being in contact with and pivotal relative to one another.
  • the pair of pins may be arranged in a side-by-side relationship with the contacting surfaces forming a rubbing or rolling bearing surface during pivotal movement of adjacent link assemblies.
  • the pins of each pair may have a toothed profile, the teeth of each pin meshing with the teeth of the other.
  • Each link plate preferably has two spaced pins each of which has first and second arcuate surfaces, the first arcuate surfaces of said pair of pins of adjacent link assemblies being in rolling or rubbing contact, the second surfaces being of common radius and serving to support the housing.
  • a clearance may be provided between the housing and the pins, the clearance being filled with a supporting fluent material.
  • Each link plate may have an aperture through which a pin oi ' an adjacent link assembly is received. This permits easy interconnection of the link assemblies.
  • the pins may be integral with or securely fastened to the link plate.
  • each link plate is cranked or tapered so that each link assembly is configured to have a relatively wide end and a relatively narrow end. the narrow end of a given link assembly being received by the relatively wide end of an adjacent link assembly.
  • the roller may be engaged with the pins by means of a rib and groove connection.
  • the pins of opposed link plates may releasably engage one another.
  • Figure 1 is a perspective view of part of a length of a chain according to present invention.
  • Figure 2 is a perspective view of a link plate of the chain of figure 1 ;
  • Figure 3 is a section view along line X-X of figure 1 ;
  • Figure 4 is a section view along line Y-Y of figure 1 :
  • Figure 5 is a part-sectioned plan view of an alternative embodiment of part of a length of chain in accordance with the present invention.
  • Figure 6 is a plan view of a single link plate of the chain of figure 5;
  • Figure 7 is a part-sectioned plan view of a further alternative embodiment of part of a length of chain according to the present invention.
  • Figures 8a to 8f are sectioned views of the housing and pins of chains according to the present invention, showing alternative embodiments of pin shapes.
  • the chain according to the present invention comprises a plurality of interconnected identical link assemblies (only two are shown in figure 1 as indicated general 1 ⁇ reference numerals 1 and l a) that are manufactured from a suitable metal or polymer.
  • Each link assembly 1 comprises identical opposed cranked link plates 2 each of which has a pair of spaced, integral, laterally protruding pins 3. 4.
  • each link assembly 1.1 a has a first (narrow) end (indicated by arrow 5) at which the opposed link plates 2 are separated by a relatively short distance and a second ( relatively wide) end (indicated by arrow 6) at which the opposed link plates 2 are separated by a greater distance.
  • the opposed link plates 2 of each link assembly 1 . 1 a are connected together at the protruding pins 3. 4 (as will be described below) in such a w ay that the narrow end 5 of a given link assembly 1 is received by the wide end 6 of an adjacent link assembly l a.
  • Each pin 3,4 is approximately oval in cross section with an outer arcuate surface 7 , an inner arcuate bearing surface 8 and an end face 9.
  • the link plate 2 has a crescent-shaped aperture 10 immediately adjacent the pin 4 at the narrow end 5 of the link assembly 1.1a.
  • the surface area of the link plate 2 covered by the pin 4 and the area of the crescent-shaped aperture 10 combine to form approximately a full circle.
  • the link assemblies 1.1 a are assembled by presenting opposed link plates 2 together such that opposed pins 3.4 are received in a cylindrical roller 1 1 .
  • the end faces 4 of opposed pins 3 or 4 are brought into abutment and in certain embodiments may engage.
  • the pins 3 at the wide end 6 of the link assembly 1 are presented to the outside of the narrow end 5 of the adjacent link assembly l a and are passed through the crescent shaped apertures 10.
  • the pins 3.4 of each link assembly 1 flank the pins 3,4 of the adjacent link assembly la in such a way that the inner arcuate bearing surfaces 8 are in contact.
  • the outer arcuate surfaces 7 of the pins 3,4 are of the same radius so as to form, in combination, an approximately cylindrical surface that supports the inner surface 12 of the roller 1 1.
  • the outer arcuate surfaces 7 have ribs 13 that engage in corresponding annular grooves 14 in the inside surface of the roller 1 1 thereby ensuring retention of the pins 3,4 within the rollers 1 1 and preventing significant lateral movement of the opposed link plates 2 away from one another.
  • the end faces 9 of the pins 3,4 may be shaped as indicated by arrow 15 in figure 3 in such a way that they engage in a snap-fit connection.
  • This embodiment of the pins may be adopted as an alternative to, or in combination with, the connection between the pins and roller.
  • adjacent link assemblies 1.1 a are pivotal relative to one another with the contacting inner surfaces 8 of adjacent pins 3.4 within each roller 1 1 providing a rolling bearing.
  • the chain comprises a plurality of interconnected identical link assemblies (only two are shown in figure 5 as indicated generally by reference numerals 20 and 20a) that are manufactured from a suitable metal or polymer.
  • Each link assembly 20. 20a comprises an identical pair of opposed cranked link plates 21 (a single one of which is shown in figure 6 for clarity).
  • each link assembly 20. 20a has a first (narrow) end (indicated by arrow 22) at which the opposed link plates 21 are separated by a relatively short distance and a second (relatively w ide) end (indicated by arrow 23) at which the opposed link plates 21 are separated by a greater distance.
  • each link plate has an integral laterally protruding pin 24 that extends across half the width of the wider end 23 and has an annular groove 25 near its free end.
  • the pins 24 of the opposed link plates 21 pass through corresponding apertures (not shown) in the narrow end 22 of the adjacent link assembly 20a and are coaxially aligned in end-to-end abutment.
  • the opposed link plates 21 of each link assembly 20, 20a are connected together at the protruding pins 24 by means of a roller 26 that fits between the link plates 21 at the narrow end 22 of the link assembly and receives the pins 24.
  • the roller 26 has a two spaced annular ribs 27 defined on its internal surface and these releasably engage in the complementary annular grooves 25 in the pins 24 in such a way that the roller 26 is rotalably supported on the pins 24.
  • FIG 7. A further alternative embodiment of a chain link assembly of the present invention is shown in figure 7.
  • the design is very similar to that described above and depicted in figures 1 to 4 in that each opposed link plate 30 has a pair of spaced laterally projecting pins 32 (one onh shown).
  • the pins 32 at the w ider end 33 of the link assembly 34 pass through apertures provided in the narrow end 35 so that they flank the pins 32 at the narrow end 35 of the link assembly.
  • the four pins 32 at each connection between adjacent link assembly 34 are received in and retained a roller 36.
  • the roller 36 has annular ribs 37 that engage in complementary grooves 37 provided in the pins 32.
  • Figures 8a to 8f show different pin shapes (in cross-section) that can be used in the chain design shown in figure 7.
  • Figure 8a shows the arrangement as described above in relation to figure 3.
  • a first pin 40 is approximately semi- cylindrical and the second pin 41 is just over a quarter segment of a cylinder.
  • the contact between the pins 40. 41 is at the apex 42 of the second pin 41 and it is about this line of contact (parallel to the axis of rotation of the roller 43) that the pins 40. 41 rotate relative to one another.
  • the outer arcuate surfaces 44 of the two pins 40. 41 serve to support the roller 43 in the usual way.
  • the pins 50. 51 are positively engaged.
  • FIG. 50 of reverse C-shape in cross-section, has an arcuate recess 52 in which is rotatably received a complementary arcuate rib 53 of the second pin 51.
  • the two pins 50, 51 rotate relative to one another in use.
  • the contacting surfaces of the rib 53 and the recess 52 rub against one another and provide for a bearing.
  • the embodiment of figure 8d differs from that of figure 8c in that it the pins are each reinforced by a steel insert 54.
  • the pins 60, 61 comprise two identical sectors of a gear wheel and are disposed such that their toothed profiles 62 mesh with one another and their apices 63 are in contact with the internal surface of the roller 64.
  • the pins 60, 61 are pivotal about their apices 63 through a limited angle of rotation so that they remain engaged by virtue of the meshing teeth.
  • Figure 8f shows an embodiment that is similar to that shown in figure 8b.
  • the first (semi-cylindrical) pin 70 has been machined away on its flat face to define an obtuse angled face 72.
  • the pins 70,71 are able to pivol relative to one another about the apex 73 of the second pin 71 as described above in relation to figure 8b.
  • the clearance (denoted C) between the pins and the roller may be filled with a supportive lluent material, for example, a semi-rigid foam.
  • the link assemblies may be manufactured from any suitable material. Examples are injection moulded polymers, steel, powdered and sintered materials or forged metal.
  • pins may not be integral may be otherwise connected to the plate, for example by a snap-fit connection or by a weld, bush and roller may be replaced by a single component to reduce the number of parts and therefore the cost.

Landscapes

  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Chain Conveyers (AREA)

Abstract

L'invention concerne une chaîne comportant plusieurs ensembles (1) maillons interconnectés et pivotants. Chaque ensemble maillon comporte des plaques (2) de maillon opposées et séparables, chacune de ces plaques comportant deux goupilles (3, 4) espacées qui saillent en direction de la plaque de maillon opposée. Des goupilles opposées de plaques de maillon opposées sont reçues dans, et retenues par une roulette (11), et permettent ainsi d'interconnecter les plaques de maillon. Dans un mode de réalisation préféré, chaque goupille présente une surface (7) extérieure arquée et une surface (8) intérieure arquée. Les goupilles d'ensembles maillons adjacents présentent un logement commun, de sorte que leurs surfaces intérieures arquées sont en contact de roulement mutuel, ce qui constitue un roulement roulant qui permet un mouvement pivotant des ensembles maillons. Les surfaces extérieures arquées possèdent un rayon commun, et servent à soutenir une roulette commune qui retient ensemble les plaques de maillon.
PCT/GB1998/002111 1997-07-26 1998-07-16 Chaine WO1999005430A1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
AU84489/98A AU8448998A (en) 1997-07-26 1998-07-16 A chain

Applications Claiming Priority (4)

Application Number Priority Date Filing Date Title
GB9715764.8 1997-07-26
GBGB9715764.8A GB9715764D0 (en) 1997-07-26 1997-07-26 A chain
GB9721016.5 1997-10-04
GBGB9721016.5A GB9721016D0 (en) 1997-10-04 1997-10-04 A chain

Publications (1)

Publication Number Publication Date
WO1999005430A1 true WO1999005430A1 (fr) 1999-02-04

Family

ID=26311942

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/GB1998/002111 WO1999005430A1 (fr) 1997-07-26 1998-07-16 Chaine

Country Status (2)

Country Link
AU (1) AU8448998A (fr)
WO (1) WO1999005430A1 (fr)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
RU2450184C2 (ru) * 2009-01-23 2012-05-10 Закрытое Акционерное Общество "Техмаш" Приводная роликовая цепь с шарнирами качения

Citations (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1620613A (en) * 1923-11-15 1927-03-08 Herman V Shirley Chain
US1624058A (en) * 1925-03-14 1927-04-12 Morse Chain Co Power drive chain
US1734960A (en) * 1924-11-20 1929-11-12 Linkbelt Company Chain link
US1770989A (en) * 1924-09-18 1930-07-22 Morse Chain Co Drive chain
US2465929A (en) * 1945-01-09 1949-03-29 Gifford Wood Co Chain
DE2233789A1 (de) * 1971-10-20 1973-05-03 Fmc Corp Zahnkette
DD139981A3 (de) * 1977-12-27 1980-02-06 Horst Buge Kettengelenk fuer transport-und foerderketten,insbesondere fuer eimerketten
FR2540208A1 (fr) * 1983-01-31 1984-08-03 Laphi Moules Maillon de chaine monobloc a organes d'articulation incorpores
US4553791A (en) * 1982-10-15 1985-11-19 George Blair Public Limited Company Linked chain
US4636181A (en) * 1983-10-11 1987-01-13 Oy Nokia Ab Conveyor chain

Patent Citations (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1620613A (en) * 1923-11-15 1927-03-08 Herman V Shirley Chain
US1770989A (en) * 1924-09-18 1930-07-22 Morse Chain Co Drive chain
US1734960A (en) * 1924-11-20 1929-11-12 Linkbelt Company Chain link
US1624058A (en) * 1925-03-14 1927-04-12 Morse Chain Co Power drive chain
US2465929A (en) * 1945-01-09 1949-03-29 Gifford Wood Co Chain
DE2233789A1 (de) * 1971-10-20 1973-05-03 Fmc Corp Zahnkette
DD139981A3 (de) * 1977-12-27 1980-02-06 Horst Buge Kettengelenk fuer transport-und foerderketten,insbesondere fuer eimerketten
US4553791A (en) * 1982-10-15 1985-11-19 George Blair Public Limited Company Linked chain
FR2540208A1 (fr) * 1983-01-31 1984-08-03 Laphi Moules Maillon de chaine monobloc a organes d'articulation incorpores
US4636181A (en) * 1983-10-11 1987-01-13 Oy Nokia Ab Conveyor chain

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
RU2450184C2 (ru) * 2009-01-23 2012-05-10 Закрытое Акционерное Общество "Техмаш" Приводная роликовая цепь с шарнирами качения

Also Published As

Publication number Publication date
AU8448998A (en) 1999-02-16

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