WO2014049454A1 - Accouplement flexible - Google Patents

Accouplement flexible Download PDF

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Publication number
WO2014049454A1
WO2014049454A1 PCT/IB2013/053313 IB2013053313W WO2014049454A1 WO 2014049454 A1 WO2014049454 A1 WO 2014049454A1 IB 2013053313 W IB2013053313 W IB 2013053313W WO 2014049454 A1 WO2014049454 A1 WO 2014049454A1
Authority
WO
WIPO (PCT)
Prior art keywords
drive
drive connection
flexible coupling
coupling according
compression strut
Prior art date
Application number
PCT/IB2013/053313
Other languages
English (en)
Inventor
Christopher Thomas TOSIO
Original Assignee
Tosio Christopher Thomas
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 Tosio Christopher Thomas filed Critical Tosio Christopher Thomas
Priority to BR112015006544A priority Critical patent/BR112015006544A2/pt
Priority to AU2013322276A priority patent/AU2013322276B2/en
Priority to MX2015003774A priority patent/MX2015003774A/es
Publication of WO2014049454A1 publication Critical patent/WO2014049454A1/fr
Priority to IN1141/KOLNP/2014A priority patent/IN2014KN01141A/en
Priority to ZA2015/02730A priority patent/ZA201502730B/en

Links

Classifications

    • C—CHEMISTRY; METALLURGY
    • C13—SUGAR INDUSTRY
    • C13B—PRODUCTION OF SUCROSE; APPARATUS SPECIALLY ADAPTED THEREFOR
    • C13B10/00—Production of sugar juices
    • C13B10/02—Expressing juice from sugar cane or similar material, e.g. sorghum saccharatum
    • C13B10/06—Sugar-cane crushers
    • 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
    • F16D3/02—Yielding couplings, i.e. with means permitting movement between the connected parts during the drive adapted to specific functions
    • F16D3/10—Couplings with means for varying the angular relationship of two coaxial shafts during motion
    • 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
    • F16D3/60—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 comprising pushing or pulling links attached to both parts
    • 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
    • F16D3/60—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 comprising pushing or pulling links attached to both parts
    • F16D3/62—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 comprising pushing or pulling links attached to both parts the links or their attachments being elastic

Definitions

  • THIS invention relates to a flexible coupling.
  • a high torque, low speed drive In a sugar mill it is normal for a high torque, low speed drive to be supplied through a coupling from a rotary drive to a roller which acts relative to one or more counter-roSiers to crush raw sugar cane fed to the mill.
  • the required high torque, low speed drive is transmitted from a drive shaft to a driven roller shaft.
  • the drive and driven shafts should be in perfect axial alignment and incapable of axial movement towards or away from another.
  • a coupling of this kind has a first yoke which can be mounted transversely on the drive shaft and a second yoke which can be mounted transversely on the driven shaft.
  • a compression strut which is also arranged transversely relative to the drive and driven shafts, is located between the two yokes.
  • Opposite ends of the first and second yokes are connected to one another by drive connectors which act on the ends of the compression strut such that rotation of the first yoke, caused by rotation of the drive shaft, is transmitted to the second yoke, and hence to the driven shaft, via the compression strut and drive connectors.
  • the drive connectors may be flexible and provided by belts, straps, ropes or the like. Alternatively they may be rigid elements which extend between the ends of the yokes and the ends of the compression strut. In either case, the coupling has sufficient flexibility to accommodate misalignments of the drive and driven shafts both in a radial and an axial sense.
  • a flexible coupling comprising a drive side yoke connectable to a drive shaft at a transverse orientation relative to the drive shaft, a driven side yoke connectable to a driven shaft at a transverse orientation relative to the driven shaft, a compression strut located between the drive side yoke and the driven side yoke at an orientation transverse to the drive shaft and driven shaft, and drive connection means acting between the ends of the yokes and the ends of the compression strut, whereby drive can be transmitted from the drive shaft to the driven shaft via the yokes, drive connection means and compression strut, characterized in that each of the drive and driven yokes comprises a hub mountable to the respective drive or driven shaft and a pair of tubes radiating in opposite directions from the hub.
  • each yoke typically the tubes of each yoke are axially aligned with one another.
  • the hub and tubes of each yoke are reinforced by gusset plates fixed externally to and extending over the hub and tubes on opposite sides thereof. There may be two or more parallel gusset plates extending continuously over the hub and tubes on each side thereof.
  • the compression strut is of tubular construction with a round or rectangular cross-section. ln one particularly preferred embodiment, the compression strut has a rectangular cross-section and has a flat profile in an axial direction.
  • each yoke carries axially oriented drive connection pins towards either end thereof. These may be tubular and may extend cantiiever fashion from the ends of the yokes, the drive connection pins of one yoke extending in the opposite direction to the drive connection pins of the other yoke.
  • the drive connection means comprises closed loop, flexible drive connectors which are looped around the drive connection pins carried by the yokes and which pass over or through the ends of the compression strut.
  • the drive connection means comprises closed loop, flexible drive connectors which are connected between the drive connection pins carried by the yokes and corresponding drive connection pins carried at the ends of the compression strut.
  • the drive connection means comprises rigid links connected rotatably, via bushes of Vesconite or other low friction material, between the drive connection pins and corresponding drive connection pins carried at the ends of the compression strut, in this embodiment, the bushes may seat on stainless steel sleeves of the drive connection pins.
  • a bush of each rigid [ink has an elongate aperture in which a round drive connection pin is rotatably received.
  • each rigid link comprises a central steel plate with opposite ends, curved elements formed of flat steel bar fixed by welding to the opposite ends of the central plate to form an assembly and a bounding member formed of flat steel bar which surrounds and is fixed by welding to the assembly, the bounding member including curved end portions which, in combination with the curved elements, form openings in which the bushes are located.
  • Figure 1 shows a drive side axial view of a first embodiment of coupling according to the invention
  • Figure 2 shows a view of the first embodiment of coupling, in the direction of the arrow 2 in Figure 1 , with the drive connector straps omitted in the interests of clarity;
  • Figure 3 shows an axial view of the drive side yoke of the first embodiment of coupling
  • Figure 4 shows a transverse view of the drive side yoke seen in
  • Figure 5 ⁇ shows a transverse view of the driven or mill side yoke seen in Figures 1 to 3;
  • Figure 6 shows how a drive connection pin is connected to a yoke in the first embodiment of coupling
  • Figure 7 shows an axial view of the compression strut of the first embodiment of coupling
  • Figure 8 shows a perspective detail of an end of the compression strut seen in Figure 7; shows a drive side axial view of a second embodiment of coupling according to the invention; shows an axial view of the compression strut used in the coupling seen in Figure 9; shows a side view of the compression strut seen in Figure 10; shows a cross-sectional view of the compression strut seen in Figures 10 and 11 ; shows a cross-sectional side view of a yoke of the second embodiment; shows a perspective view of a connecting link used in the second embodiment; shows an axial view of the connecting link seen in Figure 14; and shows a cross-section at the Jine 16-16 in Figure 15.
  • the coupling 10 seen in Figure 1 is suitable for transmitting rotary torque from a drive shaft (not shown) to a driven shaft (not shown) in a sugar mill. It has a drive side yoke 12, a mil! or driven side yoke 14 and a compression strut 16.
  • the drive side yoke 12 is mounted transversely to the drive side shaft and the driven or mill side yoke 14 is mounted transversely to the driven or mill side shaft.
  • the ends of the drive and mill side yokes 12 and 14 are connected to one another by drive connection means which acts between the ends of the yokes, on the ends of the compression strut 16. More is said below about these means.
  • the coupling has the primary features of a coupiing of the known type referred to previously.
  • One feature of the illustrated coupling 10 which is not conventional is the actual construction of the drive and driven side yokes 12 and 14.
  • the drive side yoke 12 has a central hub 18 and a pair of axial!y aligned tubes 20 radiating from the hub in opposite directions.
  • the hub and tubes are reinforced laterally and against transverse bending by gusset plates 22.
  • the gusset plates 22 are provided in pairs on opposite sides of the hub 18 and tubes 20, and in the illustrated embodiment extend for the full length of the hub and tube structure. In other embodiments, the gusset plates extend for only a part of the length of the structure, in the illustrated embodiment, the gusset plates on each side are parallel to one another and are fixed to the hub and tubes by fillet welds. in use, the drive side shaft locates in the hub 18.
  • the shaft has a square cross-section while the internal profile of the hub is also generally square, but somewhat oversize with respect to the shaft and with rounded corners and inwardly concave sides.
  • rotational engagement between the shaft and the hub takes place at points on the four flat sides of the shaft, near to the corners but not at the corners themselves.
  • the driven side yoke 14 has a structure which is largely the same as that of the drive side yoke.
  • the yoke 14 includes a central hub 24, tubes 26 and reinforcing gussets 28 arranged in pairs on opposite sides of the hub and tube structure.
  • the cross-section of the driven shaft and the internal profile of the hub 24 may be similar to those described above for the corresponding drive side components.
  • the drive side yoke 12 carries a pair of drive connection pins 30, one towards either end. The pins are fixed cantilever fashion to the yoke and project axially from the yoke in one axial direction only, into the space between the two yokes.
  • both pins 30 project to one side only of the yoke.
  • Each of the pins 30 carries four flanges 32, 34, 36 and 38 which define lands 40, 42 and 44 between them.
  • the driven side yoke 14 carries axiaily oriented drive connection pins 41 carrying flanges corresponding to those carried by the pins 30.
  • the pins 41 also project into the space between the two yokes, but in the opposite direction to that in which the pins 30 project.
  • the arrangement is such that, when the yokes 12 and 14 are spaced apart from one another by a predetermined distance, the lands 40, 42 and 44 of the pins 30 are in alignment with the corresponding lands defined by the flanges of the pins 41.
  • each pin 30, 41 is fixed to its associated yoke 12, 14 is illustrated in Figure 6.
  • each pin 30, 41 is of tubular form and is fixed cantilever fashion in reinforcing sleeves 46, 48 fixed in diametrically aligned holes in the associated tube 20, 26.
  • the compression strut 16 includes an elongate tube 50 carrying end structures 52 at either end.
  • Each end structure 52 includes spaced apart, inner and outer curved plates 54, 56.
  • Internal plates 58 subdivide the curved space between the plates 54 and 56 into curved passages 60.
  • the end of the tube 50 is connected to the inner curved plate 54 by spaced apart brackets 62.
  • drive connection means including drive connectors 66 (seen in Figure 1 only and omitted from the other Figures in the interests of clarity of illustration), arranged in pairs.
  • Each drive connector 66 is provided by a closed loop strap or s!ing 68 of a suitable flexible material.
  • One strap of each pair passes around a land 40 of a pin 30 of the drive side yoke 12 and around the corresponding land of the pin 41 of the driven side yoke 14. Similariy, the other strap of the pair passes around the land 44 of the pin 30 and around the corresponding land of the pin 41.
  • each connector strap passes through one of the passages 60 in an end structure 52 of the compression strut 16.
  • tension in the connector straps places the compression strut 16 under axial compression as described below in more detail
  • Rigid links 64 are provided for transmission of rotary torque in the reverse direction. These links are connected between the ends of the compression strut 16 and the ends of the yokes 12, 14. Each link 64 has one end connected pivotal!y by a pin 70 to the brackets 62 at an end of the compression strut.
  • each link is formed with a slotted opening in which the land 42 of a pin 30, or the corresponding land of a pin 41 , is received.
  • the relevant end of the link is connected pivota!ly and slidably to the end of a yoke 12, 14.
  • the iinks will be operative to transmit a reverse drive from the drive side yoke 12 to the driven or mill side yoke 14 and hence from the drive shaft to the driven shaft.
  • the ability of the Iinks to slide to a limited extent relative to the associated yokes will also enable the coupling to accommodate slight kick-backs which might occur, for example if the drive shaft is suddenly stopped as a result of a power failure or for any other reason.
  • connections between the Iinks 64 and the yokes and compression strut will be sufficiently loose to allow the coupling 10 to have the required flexibility to accommodate shaft misalignments and relative axial movements.
  • the compression strut could carry drive connection pins at either end, possibly similar to the pins 30 and 41.
  • Separate drive connectors typically closed loop flexible drive connection straps or slings could then be connected between the ends of the drive and driven yokes and the ends of the compression strut.
  • FIGS 9 to 16 illustrate a second embodiment of the invention.
  • components corresponding to those illustrated in Figures 1 to 8 are designated by the same reference numerals prefixed by the numeral
  • a major difference between the embodiments is the fact that flexible straps or slings are not used at ail as the drive connectors of the drive connection means. Instead, the drive connectors are provided by rigid connecting links 200 each connected at one end to an end of a yoke 112, 114 and at the other end to an end of the compression strut 116.
  • the link 200 comprise a central plate 202 formed with an oval cut-out 204 for weight reduction purposes.
  • Circulariy curved plates 206 are welded to curved ends of the central plate at 208. These plates are formed by bending flat steel bar of the appropriate width.
  • central plate 202 and curved plates 206 are bounded by an elongate ring 210 having straight side portions 212 and circularly curved end portions 214.
  • the long edges of the central plate 202 are welded to the side portions 212 of the ring at 216.
  • the ring 210 is provided by a length of flat steel bar which is bent to the illustrated shape and the ends of which are connected to one another by welding at 218.
  • the curved plates 206 and the curved end portions 214 of the ring 210 form openings 220 and 222.
  • the opening 220 accommodates a bush 224, of Vesconite or other low friction materiai, defining a circular central aperture.
  • the opening 222 also accommodates a bush 226 of Vesconite or other low friction material.
  • the central aperture of this bush is not perfectly circular. Its dimension 228 is slightly greater, typically 3mm greater, than its dimension 230.
  • the central aperture is accordingly slightly elongate in shape.
  • the Vesconite bushes 224, 226 are not shown in Figure 14.
  • Figure 13 illustrates the drive side yoke 112.
  • the yoke has a central hub 118 and a pair of tubes 120 radiating from the hub in opposite directions.
  • the tubes carry drive connection pins 130 towards their ends as illustrated.
  • Each of these pins has a reduced diameter end 232 on which is mounted a round cylindrical, stainless steel sleeve 234.
  • the driven side yoke has a similar structure to the drive side yoke.
  • the compression strut 116 is illustrated in Figures 10 to 12. Whereas the compression strut 16 of the first embodiment is formed by a tube of round cross-section, the tubular compression strut 116 has a rectangular cross- section. Th e axial dimension 236 of the strut is substantially less than the transverse dimension 238. The compression strut accordingly has a flat profile in the axial direction, i.e. in a direction parallel to the drive and driven shafts.
  • the compression strut is formed by opposing steef plates 240 each bent to a lipped channel shape.
  • the plates are connected to one another by bolts 242 passing through aligned holes in the lips or flanges 244.
  • the compression strut includes end structures 152 each including a pair of axialiy spaced plates 246 carrying connection pins 247 extending between the plates in an axial direction parallel to the axes of the drive and driven shafts. These pins are round in cross-section and are fitted externally with round cylindrical, stainless steel sleeves 248 similar to the sleeves 234.
  • the links 200 are connected between the ends of the yokes and the ends of the compression strut, in each case with a Vesconite bush 224, 226 mounted rotatably on a stainless steel sleeve 234, 248 respectively.
  • End caps 250 (two of which are seen in Figure 9) hold the ends of the links on the drive connection pins 130 of the yokes.
  • the coupling 110 operates in a manner similar to the coupling 10, with rotary drive being transmitted from a drive shaft (not shown) connected to the drive side yoke to a driven shaft (not shown) connected to the mill or driven side yoke through the connecting Sinks 200 and the compression strut 116.
  • the connecting links 200 are in tension and the compression strut is in longitudinal compression.
  • the couplings 10 and 110 described above have the advantage that the coupling can be made relatively inexpensively, in both cases, this is largely attributable to the fact that the yokes have basically a tubular form, with the tubes themselves typically being of a commercially available size.
  • the second embodiment has the further advantage that the coupling, as a whole, can have a reduced axial dimension, this being attributable to the fact that the compression strut has a flat profile in the axial direction.
  • a further advantage of the second embodiment is that the rigid connecting links 200 perform the functions of both the slings 68 and the !inks 64 of the first embodiment.
  • the simple, fabricated structure of the links 200 which are formed from commercially available flat steel bar and plate, leads to further cost reductions.

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  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Chemical & Material Sciences (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Biochemistry (AREA)
  • Organic Chemistry (AREA)
  • Shafts, Cranks, Connecting Bars, And Related Bearings (AREA)
  • Surgical Instruments (AREA)
  • Earth Drilling (AREA)

Abstract

L'invention concerne un accouplement flexible qui est destiné de manière typique à être utilisé dans un moulin à sucre. L'accouplement (10, 110) a une chape (12, 112) côté menant connectée à un arbre menant suivant une orientation transversale par rapport à l'arbre menant et une chape (14, 114) côté mené pouvant être connectée à un arbre mené suivant une orientation transversale par rapport à l'arbre mené. Il y a également une barre comprimée (16, 116) située entre les arbres menant et mené, aussi suivant une orientation transversale par rapport aux arbres menant et mené. Des moyens de connexion par entraînement agissent entre les extrémités des chapes et les extrémités de la barre comprimée de telle sorte que l'entraînement puisse être transmis de l'arbre menant à l'arbre mené par l'intermédiaire des moyens de connexion par entraînement et de la barre comprimée. Conformément à l'invention, les chapes menante et menée ont chacune un moyeu (18, 118, 24, 124) pouvant être monté sur l'arbre menant ou mené respectif et une paire de tubes (20, 120, 26, 126) rayonnant en sens inverses à partir du moyeu.
PCT/IB2013/053313 2012-09-25 2013-04-26 Accouplement flexible WO2014049454A1 (fr)

Priority Applications (5)

Application Number Priority Date Filing Date Title
BR112015006544A BR112015006544A2 (pt) 2012-09-25 2013-04-26 acoplamento flexível
AU2013322276A AU2013322276B2 (en) 2012-09-25 2013-04-26 Flexible coupling
MX2015003774A MX2015003774A (es) 2012-09-25 2013-04-26 Acoplamiento flexible.
IN1141/KOLNP/2014A IN2014KN01141A (en) 2012-09-25 2014-05-27 Flexible coupling
ZA2015/02730A ZA201502730B (en) 2012-09-25 2015-04-22 Flexible coupling

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
ZA201207167 2012-09-25
ZA2012/07167 2012-09-25

Publications (1)

Publication Number Publication Date
WO2014049454A1 true WO2014049454A1 (fr) 2014-04-03

Family

ID=50387075

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/IB2013/053313 WO2014049454A1 (fr) 2012-09-25 2013-04-26 Accouplement flexible

Country Status (6)

Country Link
AU (1) AU2013322276B2 (fr)
BR (1) BR112015006544A2 (fr)
IN (1) IN2014KN01141A (fr)
MX (1) MX2015003774A (fr)
WO (1) WO2014049454A1 (fr)
ZA (1) ZA201502730B (fr)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN104888890A (zh) * 2015-06-16 2015-09-09 南京高精齿轮集团有限公司 辊压磨机中磨辊对的动力传递系统

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1112219A (en) * 1913-08-02 1914-09-29 Julian Kennedy Shaft-coupling.
US3242693A (en) * 1962-02-24 1966-03-29 Luxembourg Brev Participations Coupling devices, in particular for shafts intended to transmit high torques
GB1210204A (en) * 1968-04-05 1970-10-28 Hurth Masch Zahnrad Carl A transmission unit
BRMU8602898U (pt) * 2006-09-27 2008-05-20 Christopher Thomas Tosio acoplamento de rótulas esféricas para multidesalinhamento, com transmissor central de torque
MX2010008402A (es) * 2010-07-30 2012-01-30 Christopher Thomas Tosio Acoplamiento flexible reversible con limitador del par.
CN102619893A (zh) * 2012-04-01 2012-08-01 昆明克林轻工机械有限责任公司 一种用于甘蔗压榨机及低速重载设备的联接装置

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1112219A (en) * 1913-08-02 1914-09-29 Julian Kennedy Shaft-coupling.
US3242693A (en) * 1962-02-24 1966-03-29 Luxembourg Brev Participations Coupling devices, in particular for shafts intended to transmit high torques
GB1210204A (en) * 1968-04-05 1970-10-28 Hurth Masch Zahnrad Carl A transmission unit
BRMU8602898U (pt) * 2006-09-27 2008-05-20 Christopher Thomas Tosio acoplamento de rótulas esféricas para multidesalinhamento, com transmissor central de torque
MX2010008402A (es) * 2010-07-30 2012-01-30 Christopher Thomas Tosio Acoplamiento flexible reversible con limitador del par.
CN102619893A (zh) * 2012-04-01 2012-08-01 昆明克林轻工机械有限责任公司 一种用于甘蔗压榨机及低速重载设备的联接装置

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN104888890A (zh) * 2015-06-16 2015-09-09 南京高精齿轮集团有限公司 辊压磨机中磨辊对的动力传递系统

Also Published As

Publication number Publication date
AU2013322276A1 (en) 2015-05-14
BR112015006544A2 (pt) 2017-07-04
AU2013322276B2 (en) 2017-01-12
IN2014KN01141A (en) 2015-10-16
ZA201502730B (en) 2016-11-30
MX2015003774A (es) 2015-07-14

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