WO2005019671A1 - Accouplement flexible presentant un centre avec des plis rentrants opposes - Google Patents

Accouplement flexible presentant un centre avec des plis rentrants opposes Download PDF

Info

Publication number
WO2005019671A1
WO2005019671A1 PCT/US2004/024165 US2004024165W WO2005019671A1 WO 2005019671 A1 WO2005019671 A1 WO 2005019671A1 US 2004024165 W US2004024165 W US 2004024165W WO 2005019671 A1 WO2005019671 A1 WO 2005019671A1
Authority
WO
WIPO (PCT)
Prior art keywords
coupling
extending
shoe
center element
leg portions
Prior art date
Application number
PCT/US2004/024165
Other languages
English (en)
Inventor
William R. Hubiak
Duane V. Byerly
William E. Ryan
Gordon W. Craig
Original Assignee
Rexnord Corporation
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 US10/887,051 external-priority patent/US20060009297A1/en
Application filed by Rexnord Corporation filed Critical Rexnord Corporation
Publication of WO2005019671A1 publication Critical patent/WO2005019671A1/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
    • 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
    • F16D3/72—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 with axially-spaced attachments to the coupling parts
    • F16D3/74—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 with axially-spaced attachments to the coupling parts the intermediate member or members being made of rubber or other rubber-like flexible material
    • 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
    • F16D3/72—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 with axially-spaced attachments to the coupling parts
    • F16D3/725—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 with axially-spaced attachments to the coupling parts with an intermediate member made of fibre-reinforced resin
    • 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
    • F16D3/72—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 with axially-spaced attachments to the coupling parts
    • F16D3/74—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 with axially-spaced attachments to the coupling parts the intermediate member or members being made of rubber or other rubber-like flexible material
    • F16D2003/745—Tyre type coupling, i.e. bellows with only one fold

Definitions

  • This invention relates to flexible shaft couplings, and more particularly, to composite flexible couplings for transmitting torque between two shafts approximately aligned on a shaft axis, i.e., to flexible couplings joining a pair of axially spaced shafts.
  • Flexible diaphragm couplings comprising a pair of shoes joined by a generally U-shaped flexible center element, such as disclosed in U. S. Pat. Nos. 4,634,400; 6,080,065; 6,117,015; 6,196,926; and 6,257,985, all issued to the assignee of the present application, can accommodate axial misalignments (i.e. the spacing between the shafts is not optimum per coupling design) and angular misalignments
  • the present invention provides a flexible coupling for transmitting torque between two shafts approximately aligned on a shaft axis, and a method of making the novel coupling.
  • the coupling can accommodate axial, lateral, and angular shaft misalignments without the problems associated with prior art couplings.
  • One embodiment of a flexible coupling incorporating the present invention includes an arcuate flexible center element having two axially spaced radially extending leg portions joined by an axially extending bridging portion.
  • the axially extending bridging portion has at least two opposing re-entrant folds defining a T- shaped cross-section in a radial plane extending from and along the shaft axis.
  • a general objective of the present invention is to provide a flexible coupling that can accommodate axial, lateral, and angular shaft misalignments without the problems associated with prior art diaphragm couplings. This objective is accomplished by providing a coupling having a center element including a bridging portion with at least two opposing re-entrant folds defining a T-shaped cross-section in a radial plane extending from and along the shaft axis.
  • FIG. 1 is a perspective view of one embodiment of a portion of a coupling inco ⁇ orating various of the features of the invention, which view is taken from the inside of the coupling;
  • FIG. 2 is an elevational view of the inside of the couplings shown in Figure 1;
  • Fig. 3 is a partially broken away and sectioned axial side view of the entire coupling shown in Fig. 1, with one half thereof shown in dotted outline;
  • Fig. 4 is a perspective view of the center element of Fig. 1;
  • Fig. 5 is a fragmentary view of a second embodiment of a coupling inco ⁇ orating various of the features of the invention;
  • FIG. 6 is a perspective view of a third embodiment of a portion of a coupling inco ⁇ orating various of the features of the invention, which view is taken from the inside of the coupling;
  • FIG. 7 is an elevational view of the inside of the couplings shown in Figure 6;
  • Fig. 8 is a partially broken away and sectioned axial side view of the entire coupling shown in Fig. 6, with one half thereof shown in dotted outline; and
  • Fig. 9 is a cross-sectional axial side view of the coupling shown in Fig. 6 in a mold during manufacture.
  • a composite flexible diaphragm coupling 11 for transmitting torque between first and second axially spaced and oppositely extending shafts 13 and 15 which are approximately aligned on a shaft axis 17 is shown in Fig. 1-3.
  • the coupling 11 comprises first and second angularly spaced composite flexible arcuate members 21 and 23 (Fig. 3) which are of generally identical constructiOn, and respectively extend for approximately 180 degrees a ⁇ und ⁇ a coupling axis 35.
  • the arcuate members include first and second oppositely extending arcuate shoes 31 and 33 which are joined by an arcuate flexible T-shaped center element 41.
  • first and second composite members 21 and 23 are generally identically constructed, only the first composite member 21 will be described in detail. More specifically, the first and second shoes 31 and 33 are also of generally identical construction and each arcuately extends for an arcuate distance which can be almost 180 degrees. In addition, the first and second shoes 31 and 33 extend axially in opposite directions to each other. More particularly, the first and second shoes 31 and 33 each include an inner part 51 which is bonded to the central element 41, and an outer part 53 which extends from the inner part 51 and which is adapted, in any suitable way, to be connected to an associated one of the oppositely extending shafts 13 and 15.
  • the outer parts 53 each include one or more apertures 55 which permit the shoes 31 and 33 to be fixed by bolts 30 to generally cylindrical hubs 32.
  • the hubs 32 include central bores 34 housing the shafts 13 and 15.
  • the shoes 31 and 33 can take any number of suitable configurations and, in the disclosed construction, the inner and outer parts 51 and 53 are preferably of generally semi-cylindrical configuration.
  • the shoes 31 and 33 can be fabricated of any suitable metallic or plastic material and, in the disclosed construction, are preferably fabricated of suitable plastic material.
  • the center element 41 is formed from a composite sheet material, and includes first and second leg portions 61 and 63 which are generally identically constructed and which are axially spaced from each other and joined by a bridging portion 65.
  • the sheet material is preferably a glass fiber fabric impregnated with a vinyl ester resin, however any flexible material, such as a urethane material, can be used without departing from the scope of the invention.
  • the leg portions 61, 63 and bridging portion 65 extend arcuately for an arcuate distance which is approximately 180 degrees.
  • the bridging portion 65 includes a pair of centrally located, opposing, outward, re-entrant folds 67, 69. Each fold 67, 69 is joined to one of the leg portions
  • 61, 63 by a radially extending base portion 77, 79 to define a generally T-shaped cross-section in a radial plane extending from and along the shaft axis 17 or coupling axis 35, wherein the T- shaped cross-section has a radially extending stem 81 with a top 83 substantially pe ⁇ endicular to the stem 81.
  • the bridging portion 65 including at least one pair of centrally located, opposing, outward, re-entrant folds 67, 69 which defines the T-shaped cross-section accommodates axial, lateral, and angular misalignments without the accompanying increase of coupling mass, loads and forces on the shafts, and wind up deformation, associated with prior art
  • the center element 41 including the bridging portion 65 having the T-shaped cross-section provides a coupling with a diameter that is smaller than a prior art coupling sized for the same torque loads and misalignments.
  • the leg portions 61 and 63 each include a radially inner part 71 bonded to the cylindrical portion of the associated one of the shoes 31 and 33.
  • the inner parts 71 respectively, include oppositely facing, arcuately extending recesses 75 which receive, and are bonded to, the inner parts 51 of the associated shoes 31 and 33. Any suitable method for bonding the shoes 31 and 33 to the inner parts 71 can be employed.
  • FIG. 5 is another embodiment of a coupling 211 which is of generally the same construction as that shown in Figs. 1-3, except that the outer parts 253 of the shoes 231, 233 extend radially for engaging the shafts 13, 15 or hub 32.
  • a preferred embodiment of a flexible diaphragm coupling 1 11 for transmitting torque between first and second axially spaced and oppositely extending shafts 113 and 115 which are approximately aligned on a shaft axis 117 is shown.
  • the coupling 111 comprises first and second angularly spaced flexible arcuate members 121 and 123 (Fig. 8) which are of generally identical construction, and respectively extend for approximately 180
  • Each arcuate members 121, 123 is preferably formed from a suitable material as a single piece.
  • the material is preferably a glass fiber fabric impregnated with a vinyl ester resin, however, as in the above described embodiments, any flexible material, such as polyether urethane, can be used without departing from the scope of the invention. Because the first and second arcuate members 121 and 123 are generally identically constructed, only the first arcuate member 121 will be described in detail.
  • the arcuate member 121 including an arcuate flexible T-shaped center element 141 having integral shoes 131, 133.
  • the T-shaped center element 141 includes first and second leg portions 161, 163 joined by a bridging portion 165.
  • the bridging portion 165 includes a pair of centrally located, opposing, outward, re-entrant folds 167, 169.
  • Each fold 167, 169 is joined to one of the leg portions 161, 163 by a radially extending base portion 177, 179 to define a generally T-shaped cross-section in a radial plane extending from and along the shaft axis 117, wherein the T-shape has a radially extending stem 181 with a top 183 substantially pe ⁇ endicular to the stem 181.
  • the first embodiment although only one pair of opposing, outward, reentrant folds is shown, more than one pair of opposing, outward, re-entrant folds can be provided without departing from the scope of the invention.
  • the T-shaped cross-section accommodates axial, lateral, and angular misalignments without the accompanying increase of coupling mass, loads and forces on the shafts, and wind up deformation, associated with prior art U-shaped cross-section center elements.
  • the center element 141 including the bridging portion 165 having the T-shaped cross-section provides a coupling with a diameter that is smaller than a prior art coupling sized for the same torque loads and misalignments.
  • the first and second leg portions 161, 163 extend in axially opposite directions from the bridging portion 165.
  • Outer parts 162, 164 of the first and second leg portions 161, 163 form the integral shoes 131, 133 formed of the same material as the center element 141.
  • the shoes 131, 133 are generally identically constructed and axially spaced from each other.
  • the shoes 131, 133 have a material thickness greater than the thickness of the material forming the bridging portion 165 to increase the shear strength of each shoe 131, 133.
  • the additional thickness can be formed by applying additional material forming the shoes 131, 133 over the outer parts 162, 164 of the first and second leg portions 161, 163, or a different material, such as metal, an elastomer, and the like, can be embedded in, bonded to, or mechanically fastened to, to the outer parts 162, 164 of the first and second leg portions 161, 163 forming the shoe 131, 133.
  • Apertures 155 formed through shoes 131 and 133 receive bolts 130 which fix the coupling 111 to the shafts 113, 115.
  • the bolts 130 pass tlirough the apertures 155 and threadably engage hubs 132 fixed to the shafts 113, 115 to fix the coupling 111 to the shafts 113, 115.
  • other methods for fixing the coupling to the shafts can be used, such as pinning (i.e. using pins extending through the coupling into the shafts), bonding (i.e. adhesives and other chemical fasteners), mechanically interlocking the coupling with the shafts, and the like, without departing from the scope of the invention.
  • Grommets can be fixed in the apertures 155 to strengthen the aperture peripheries.
  • the coupling 111 is preferably made by a resin transfer molding process.
  • the coupling 1 11 is formed by slipping a cylindrical sleeve 185 or laying a sheet of glass fiber fabric over a cylindrical mandrel 187 having a radially extending T-shaped form 189.
  • the sheet material can be formed by winding fibers around the mandrel without departing from the scope of the invention.
  • the cylindrical sleeve 185 conforms to the shape of the mandrel 187 including the radially extending T-shaped form 189.
  • Additional layers 191 of the same or different material can be placed over the sleeve 185 on opposite axial sides of the T-shaped form 189 to build up the integral shoes 131, 133, such that the shoes 131, 133 are more rigid than the center element
  • T-shaped form 189 T-shaped form 189.
  • the above method can used lo make the flexible center element 41 of the first embodiments shown in Figs. 1-5, and the shoes can be fixed to the center element during the application of the material to the mandrel, upon curing, or subsequent to removal of the center element from the mandrel.

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  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Footwear And Its Accessory, Manufacturing Method And Apparatuses (AREA)

Abstract

L'invention concerne un accouplement pour la transmission de couple entre deux arbres approximativement alignés sur un axe de l'arbre, ainsi qu'un procédé d'obtention de l'accouplement. L'accouplement peut supporter des désalignements d'arbres axiaux, latéraux et angulaires et comprend un élément central flexible, arqué (41), deux tiges (61, 63) s'étendant radialement, axialement espacées, réunies par une partie de liaison (65) s'étendant axialement. La partie de liaison s'étendant axialement présente au moins deux plis rentrants opposés (67, 69) définissant une section transversale en forme de T (83) dans un plan radial s'étendant à partir de et le long de l'axe de l'arbre.
PCT/US2004/024165 2003-07-29 2004-07-22 Accouplement flexible presentant un centre avec des plis rentrants opposes WO2005019671A1 (fr)

Applications Claiming Priority (4)

Application Number Priority Date Filing Date Title
US49074303P 2003-07-29 2003-07-29
US60/490,743 2003-07-29
US10/887,051 US20060009297A1 (en) 2004-07-08 2004-07-08 Flexible coupling having a center with opposing re-entrant folds
US10/887,051 2004-07-08

Publications (1)

Publication Number Publication Date
WO2005019671A1 true WO2005019671A1 (fr) 2005-03-03

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Country Status (1)

Country Link
WO (1) WO2005019671A1 (fr)

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1965952B1 (fr) * 2005-12-12 2012-06-13 Robert Bosch Gmbh Machine-outil a main pourvue d'un ensemble transmission et d'une unite de decouplage
CN104179813A (zh) * 2014-07-21 2014-12-03 上海铭峦机电设备有限公司 一种快拆式高弹性联轴器
ITTO20130753A1 (it) * 2013-09-16 2015-03-17 Vittorio Villa S P A Off Giunto elastico per piantoni per sterzo.
CN106030138A (zh) * 2013-12-20 2016-10-12 葆德电气公司 有翼的弹性体联接器和卡环
WO2019120351A1 (fr) * 2017-12-18 2019-06-27 Kbk Antriebstechnik Gmbh Coupleur et son procédé d'utilisation

Citations (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2867103A (en) * 1957-04-01 1959-01-06 Woods T B Sons Co Gripping arrangements for flexible couplings for power transmission shafts
DE8514523U1 (de) * 1985-05-14 1986-01-09 Koehne, Wolfgang, 1000 Berlin Gelenkwelle zur spielfreien Momentenübertragung mit elastischen Wellengelenken zum Ausgleich von Winkel- und Axialversatz
US4634400A (en) 1978-05-01 1987-01-06 Rexnord Inc. End stress relief configuration for flexible element of elastomeric coupling
US5725434A (en) * 1994-11-28 1998-03-10 Deutsche Forschungsanstalt Fur Luft-Un Raumfahrt E. V. Shaft of fibre-reinforced material
US6080065A (en) 1998-07-22 2000-06-27 Rexnord Corporation Tearing configuration for flexible element of elastomeric coupling
US6117015A (en) 1997-10-22 2000-09-12 Rexnord Corporation Elastomeric coupling with composite shoe
US6196926B1 (en) 1998-10-29 2001-03-06 Rexnord Corporation Elastomer coupling having cylindrical surface hubs
US6257985B1 (en) 1999-10-01 2001-07-10 Rexnord Corporation Global shaft coupling

Patent Citations (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2867103A (en) * 1957-04-01 1959-01-06 Woods T B Sons Co Gripping arrangements for flexible couplings for power transmission shafts
US4634400A (en) 1978-05-01 1987-01-06 Rexnord Inc. End stress relief configuration for flexible element of elastomeric coupling
DE8514523U1 (de) * 1985-05-14 1986-01-09 Koehne, Wolfgang, 1000 Berlin Gelenkwelle zur spielfreien Momentenübertragung mit elastischen Wellengelenken zum Ausgleich von Winkel- und Axialversatz
US5725434A (en) * 1994-11-28 1998-03-10 Deutsche Forschungsanstalt Fur Luft-Un Raumfahrt E. V. Shaft of fibre-reinforced material
US6117015A (en) 1997-10-22 2000-09-12 Rexnord Corporation Elastomeric coupling with composite shoe
US6080065A (en) 1998-07-22 2000-06-27 Rexnord Corporation Tearing configuration for flexible element of elastomeric coupling
US6196926B1 (en) 1998-10-29 2001-03-06 Rexnord Corporation Elastomer coupling having cylindrical surface hubs
US6257985B1 (en) 1999-10-01 2001-07-10 Rexnord Corporation Global shaft coupling

Cited By (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1965952B1 (fr) * 2005-12-12 2012-06-13 Robert Bosch Gmbh Machine-outil a main pourvue d'un ensemble transmission et d'une unite de decouplage
ITTO20130753A1 (it) * 2013-09-16 2015-03-17 Vittorio Villa S P A Off Giunto elastico per piantoni per sterzo.
WO2015036946A1 (fr) * 2013-09-16 2015-03-19 Officine Vittorio Villa S.P.A. Accouplement élastique pour colonnes de direction
CN106030138A (zh) * 2013-12-20 2016-10-12 葆德电气公司 有翼的弹性体联接器和卡环
CN106030138B (zh) * 2013-12-20 2019-02-01 葆德电气公司 有翼的弹性体联接器和卡环
CN104179813A (zh) * 2014-07-21 2014-12-03 上海铭峦机电设备有限公司 一种快拆式高弹性联轴器
CN104179813B (zh) * 2014-07-21 2017-04-05 上海铭峦机电设备有限公司 一种快拆式高弹性联轴器
WO2019120351A1 (fr) * 2017-12-18 2019-06-27 Kbk Antriebstechnik Gmbh Coupleur et son procédé d'utilisation

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