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WO2002055896A1 - Accouplement flexible - Google Patents

Accouplement flexible Download PDF

Info

Publication number
WO2002055896A1
WO2002055896A1 PCT/GB2002/000065 GB0200065W WO02055896A1 WO 2002055896 A1 WO2002055896 A1 WO 2002055896A1 GB 0200065 W GB0200065 W GB 0200065W WO 02055896 A1 WO02055896 A1 WO 02055896A1
Authority
WO
WIPO (PCT)
Prior art keywords
spacer element
guard ring
coupling according
membrane member
disposed
Prior art date
Legal status (The legal status 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 status listed.)
Ceased
Application number
PCT/GB2002/000065
Other languages
English (en)
Inventor
Michael Richard Hutchings
Michael Charles Bundock
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
British Autogard Ltd
Original Assignee
British Autogard Ltd
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 GB0100694A external-priority patent/GB0100694D0/en
Priority claimed from GB0122116A external-priority patent/GB0122116D0/en
Application filed by British Autogard Ltd filed Critical British Autogard Ltd
Publication of WO2002055896A1 publication Critical patent/WO2002055896A1/fr
Anticipated expiration legal-status Critical
Ceased legal-status Critical Current

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
    • F16D3/00—Yielding couplings, i.e. with means permitting movement between the connected parts during the drive
    • F16D3/50—Yielding couplings, i.e. with means permitting movement between the connected parts during the drive with the coupling parts connected by one or more intermediate members
    • F16D3/78—Yielding couplings, i.e. with means permitting movement between the connected parts during the drive with the coupling parts connected by one or more intermediate members shaped as an elastic disc or flat ring, arranged perpendicular to the axis of the coupling parts, different sets of spots of the disc or ring being attached to each coupling part, e.g. Hardy couplings

Definitions

  • This invention relates to a flexible coupling, hereinafter referred to as being of the kind specified, having an input member connected to a first guard ring which is connected to an input torque transmitting membrane member which is connected to one end part of a spacer element, an opposite end part of the spacer element being connected to an output torque transmitting membrane member which is connected to a second guard ring which is connected to an output member.
  • the input and output members maybe connected to machine members or may comprise machine members.
  • An object of the invention is to provide a new and improved flexible coupling of the kind specified.
  • the first guard ring may be disposed to extend axially between the input member and one end of the spacer element and the second guard ring may be disposed to extend axially between the output member and the opposite end of the spacer element.
  • the guard rings may be closely spaced axially and radially from the associated end of the spacer element.
  • closely spaced we mean an axial distance lying in the range 1 mm to 10 mm , preferably 2 mm to 5 mm and a radial distance lying in the range 0.2 mm to 1.0 mm preferably 0.5mm to 0.6mm.
  • the first guard ring may be provided with an axial abutment surface which is disposed for engagement with an axial abutment surface provided on the spacer element and the second guard ring may be provided with an axial abutment surface which is disposed for engagement with an axial abutment surfaces provided on said spacer element.
  • the first guard ring may be provided with a radial abutment surface which is disposed for engagement with a radial abutment surface of the spacer element and the second guard ring member may be provided with a radial abutment surface which is disposed for engagement with a radial abutment surface of the spacer element.
  • the radial abutment surfaces of the guard rings may be inwardly directed for engagement by the spacer element.
  • a first radial abutment may be provided between the extension of each guard ring and the associated end of the spacer element.
  • a second radial abutment may be provided between the guard ring and the spacer for engagement with overload collars provided therein and fixed relative to the associated spacer flange or guard ring respectively.
  • the second radial abutments may provide clearance holes in which the overload collars are disposed.
  • Said clearance holes are provided with a clearance compared with said collars so that the collars engage the abutment provided with the clearance holes before the membrane member is damaged.
  • the input torque transmitting membrane member may be connected to the one end part of the spacer element by a bolted connection and each bolt may be provided with an overload collar disposed on the opposite side of the membrane member to the spacer element and disposed so as to be clamped between the input torque transmitting membrane member and an abutment member of said bolted connection whilst the output torque transmitting membrane member may be connected to the opposite end part of the spacer element by a bolted connection and each bolt may be provided with an overload collar disposed of the opposite side of the membrane member to the spacer element and disposed so as to be clamped between the output torque transmitting membrane member and an abutment member of said bolted connection.
  • the overload collar of said bolted connection of said one or opposite end parts of the spacer element to the membrane member may be at least partly received in a clearance aperture in the associated the first or second guard rings.
  • the input torque transmitting membrane member may be connected to the first guard ring by a bolted connection and each bolt may be provided with an overload collar disposed on the opposite side of the membrane member to the first guard ring and disposed so as to be clamped between the input torque transmitting membrane member and an abutment member of said bolted connection whilst the output torque transmitting membrane member may be connected to the second guard ring by a bolted connection and each bolt may be provided with an overload collar disposed on the opposite side of the membrane member to the guard ring and disposed so as to be clamped between the output torque transmitting membrane member and an abutment member of said bolted connection.
  • a threaded bore may be provided in the guard ring and through bores in the associated spacer element into which bolts may be engaged to provide a clamping means to clamp the guard ring to the spacer element.
  • Said bolts may be the same bolts are used to connect the input member to the first guard ring or the output member to the second guard ring.
  • the guard rings may co-operate with the input and output members and with the spacer element to reduce windage of the coupling.
  • the outer circumferential surface of the input member, first guard ring and said one end part of the spacer element may lie in or substantially in the same cylindrical surface whilst the outer circumferential surface of the output member, second guard ring and said opposite end part of the spacer element may lie in or substantially in the same cylindrical surface.
  • the spacer element may comprise a tube with flanges attached thereto by disconnectible fixing means to provide said one and opposite end parts .
  • the spacer flanges may be attached to the spacer tube by a bolted connection.
  • Fixing bolts provided in the flexible coupling may be fitted bolts to provide a backlash-free connection.
  • the present invention provides the following advantages: reduced windage, retention of the spacer and containment of loose parts in the event of membrane failure, ease of balancing the assembly.
  • Figure 1 is a diagrammatic illustration of a drive train utilising a flexible coupling embodying the invention
  • Figure 2 is a partly exploded side elevation and partly in section, of a flexible coupling embodying the invention
  • Figure 3 is a side elevation, partly in section, of the coupling shown in Figure 2 in assembled condition
  • Figure 4a is an enlarged fragmentary cross-section of another part of Figure 3,
  • Figure 5 is a front elevation showing a membrane used in the flexible coupling of Figures 1 to 4,
  • Figure 6 is a front elevation of a guard ring of the coupling shown in Figure 2
  • Figure 7 is a section on the line 7-7 of Figure 6.
  • FIG 1 a flexible coupling 10 which is driven by an electric motor 11 through a shaft 12 and which drives a pump 13 through a shaft 14.
  • the coupling may be disposed between any desired driver and any desired driven component.
  • the shaft 12 is connected by a conventional keyway connection to an input member 15 in the form of a hub having a generally cylindrical part 16 having a bore within which the shaft 12 is received and an outwardly extending flange 18 provided with a plurality, in the present example 6 of apertures 19.
  • the flange 18 is also provided with an axially extending lip 20 as hereinafter to be described.
  • Axially adjacent to the input member 15 is a first guard ring 21 which has a main part 22a provided with a plurality of apertures 22 and which is provided with a tubular extension part 22b.
  • the main part 22a of the guard ring 21 and the tubular extension part 22b have a common circumferentially outermost surface 24 of cylindrical configuration.
  • the spacer element 25 comprises a tubular portion 26 having a plurality, in the present example 6, of through bores 27a therein which are threaded and receive spacer bolts 28 received in appropriate counterbored apertures 27b of a flange provided by one disk shaped end part 29 of the spacer element at the end thereof adjacent to the input member 15 and of an opposite flange provided by a disk shaped end part 30 at the opposite end of the tubular part 26.
  • each membrane member 31 Disposed between the guard ring 21 and the one end part 29 of the spacer element 25 is an input torque transmitting membrane member 31.
  • the membrane member comprises a plurality, for example, 4 to 6, of separate components all of the same shape which are bolted together to provide the membrane member as a pack.
  • each membrane member 31 has a circular bore 3 la centred on an axis A and six, part circular, scalloped portions 32 equally angularly spaced around a circular external surface 33 of the membrane member.
  • the membrane member is also provided with six through bores arranged in two sets of three bores 34a, 34b at equally angularly spaced positions centred on the unscalloped parts of the outer periphery 33.
  • Every alternate through bore 34a is connected by a bolt 35a to the one end part 29 of the spacer element 25.
  • the bolt 35a has a head 36a and a nut 37a threadedly engaged with the shank of the bolt 35 a.
  • a generally cylindrical overload collar 38a is clamped between the nut 37a and the membrane member 31 whilst a washer 39a is clamped between the membrane member 31 and the one end part 29 of the spacer element 25.
  • the overload collar 38a is a clearance fit in a through bore 38d provided in the input member 23.
  • each remaining i.e. intermediate, aperture 34b is connected by a bolt 35b to the input member 13.
  • the bolt 35b has a head 36b and a nut 37b threadedly engaged with the shank of the bolt 35b.
  • a generally cylindrical overload collar 38b is clamped between the nut 37b and the membrane member 31 whilst a washer 39b is clamped between the membrane member 31 and the first guard ring 23.
  • the overload collar 38b is a clearance fit in a through bore 38e provided in the one end part 29 of the spacer element 25.
  • the input member 15 is bolted by bolts 19a to the first guard ring 21.
  • torque is transmitted by the bolts 19a engaged in the appropriate openings 19 of the input member 15 to the first guard ring then by bolts 35b to the membrane member 31 and then from the membrane member 31 through the bolts 35a to the one end part 29 of the spacer element 25.
  • the membrane member 31 will deform to cause the overload washers 38a and/or 38b to move into engagement with the clearance bore 38d or 38e respectively. This will occur before damage to the membrane member 31 occurs.
  • the arrangement at the opposite end of the spacer element 25 is the same as described hereinbefore at the input end and thus the opposite end part 40 of the spacer element is connected to an output torque transmitting membrane member 41 which is connected to an output member 42.
  • the membrane member 41 is the same as the membrane member 31 shown in Figure 5.
  • a second guard ring member 43 which is bolted by bolts 44 to the output member 42.
  • the external surface 23 of the two guard rings 21 and 43 lie in the same circumferential surface as the outermost circumferential surfaces 45, 46 of the input and output members 15, 42 and the outermost circumferential surfaces 47, 48 of the one and opposite parts of the spacer sleeve 25.
  • the tubular part 22b is provided with an axial abutment surface 50 which is adapted to engage with an axially directed abutment surface or shoulder 51 of the one end part 29 of the spacer element 25.
  • the extension 22b is provided with a radial abutment surface 52 which is arranged to be closely adjacent to a radial abutment surface 53 extending around the circumference of the one end part of the spacer element 25.
  • This radial spacing may be, for example, from 0.2mm to 1mm and preferably 0.5mm to 0.6mm. If desired the bolts which secure the input member 15 to the first guard ring may be utilised for this purpose.
  • the input member 15 and the output member 42 may be connected to or comprise any desired machine member.

Landscapes

  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Separation Using Semi-Permeable Membranes (AREA)

Abstract

L'invention concerne un accouplement flexible comprenant un élément d'entrée (15) relié à un premier anneau de garde (21) lui-même relié à une membrane de transmission de couple d'entrée (31). Cette membrane de transmission de couple d'entrée (31) est reliée à une extrémité d'un élément d'écartement (25), une extrémité opposée de l'élément d'écartement étant reliée à une membrane de transmission de couple de sortie (41) elle-même reliée à un second anneau de garde. Ce second anneau de garde est relié à un élément de sortie (42), le premier anneau de garde comprenant une extension tubulaire (22b) qui s'étend vers une extrémité de l'élément d'écartement et le second anneau de garde (43) comprend une extension tubulaire qui s'étend vers l'extrémité opposée de l'élément d'écartement.
PCT/GB2002/000065 2001-01-11 2002-01-09 Accouplement flexible Ceased WO2002055896A1 (fr)

Applications Claiming Priority (4)

Application Number Priority Date Filing Date Title
GB0100694.9 2001-01-11
GB0100694A GB0100694D0 (en) 2001-01-11 2001-01-11 Flexible coupling
GB0122116.7 2001-09-13
GB0122116A GB0122116D0 (en) 2001-09-13 2001-09-13 Machin assembly

Publications (1)

Publication Number Publication Date
WO2002055896A1 true WO2002055896A1 (fr) 2002-07-18

Family

ID=26245547

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/GB2002/000065 Ceased WO2002055896A1 (fr) 2001-01-11 2002-01-09 Accouplement flexible

Country Status (1)

Country Link
WO (1) WO2002055896A1 (fr)

Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3213642A (en) * 1963-03-18 1965-10-26 Arnold S Stern Slip-on coupling with overload ring
US4482335A (en) * 1979-12-18 1984-11-13 Torsiflex Limited Flexible couplings
US4708692A (en) * 1984-11-29 1987-11-24 Atec-Weiss Kg Flexible all-steel shaft coupling
DE4007508A1 (de) * 1990-03-09 1991-09-12 Atec Weiss Gmbh & Co Kg Flexible ganzstahlwellenkupplung mit funkenhemmender auskleidung
WO1992001873A1 (fr) * 1990-07-23 1992-02-06 Zurn Industries, Inc. Couplage du type a diaphragme empile avec materiaux de remplissage integres
DE4315861A1 (de) * 1993-05-12 1994-11-17 Atec Weiss Gmbh & Co Kg Flexible Ganzstahlwellenkupplung
US5588917A (en) * 1994-11-14 1996-12-31 Kop-Flex, Inc. Coupling with dual torque transmission paths

Patent Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3213642A (en) * 1963-03-18 1965-10-26 Arnold S Stern Slip-on coupling with overload ring
US4482335A (en) * 1979-12-18 1984-11-13 Torsiflex Limited Flexible couplings
US4708692A (en) * 1984-11-29 1987-11-24 Atec-Weiss Kg Flexible all-steel shaft coupling
DE4007508A1 (de) * 1990-03-09 1991-09-12 Atec Weiss Gmbh & Co Kg Flexible ganzstahlwellenkupplung mit funkenhemmender auskleidung
WO1992001873A1 (fr) * 1990-07-23 1992-02-06 Zurn Industries, Inc. Couplage du type a diaphragme empile avec materiaux de remplissage integres
DE4315861A1 (de) * 1993-05-12 1994-11-17 Atec Weiss Gmbh & Co Kg Flexible Ganzstahlwellenkupplung
US5588917A (en) * 1994-11-14 1996-12-31 Kop-Flex, Inc. Coupling with dual torque transmission paths

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