WO1994009284A1 - Embrayage a plateaux multiples - Google Patents

Embrayage a plateaux multiples Download PDF

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Publication number
WO1994009284A1
WO1994009284A1 PCT/AU1993/000526 AU9300526W WO9409284A1 WO 1994009284 A1 WO1994009284 A1 WO 1994009284A1 AU 9300526 W AU9300526 W AU 9300526W WO 9409284 A1 WO9409284 A1 WO 9409284A1
Authority
WO
WIPO (PCT)
Prior art keywords
plate
plates
clutch
reaction
galleries
Prior art date
Application number
PCT/AU1993/000526
Other languages
English (en)
Inventor
John Woollams
Original Assignee
Applied Friction Pty. 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
Application filed by Applied Friction Pty. Ltd. filed Critical Applied Friction Pty. Ltd.
Priority to AU51460/93A priority Critical patent/AU671676B2/en
Publication of WO1994009284A1 publication Critical patent/WO1994009284A1/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
    • F16D55/00—Brakes with substantially-radial braking surfaces pressed together in axial direction, e.g. disc brakes
    • F16D55/24—Brakes with substantially-radial braking surfaces pressed together in axial direction, e.g. disc brakes with a plurality of axially-movable discs, lamellae, or pads, pressed from one side towards an axially-located member
    • F16D55/26—Brakes with substantially-radial braking surfaces pressed together in axial direction, e.g. disc brakes with a plurality of axially-movable discs, lamellae, or pads, pressed from one side towards an axially-located member without self-tightening action
    • F16D55/36—Brakes with a plurality of rotating discs all lying side by side
    • 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
    • F16D13/00—Friction clutches
    • F16D13/58—Details
    • F16D13/72—Features relating to cooling
    • 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
    • F16D65/00—Parts or details
    • F16D65/02—Braking members; Mounting thereof
    • F16D65/12—Discs; Drums for disc brakes
    • F16D65/128—Discs; Drums for disc brakes characterised by means for cooling
    • 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
    • F16D65/00—Parts or details
    • F16D65/78—Features relating to cooling
    • F16D65/84—Features relating to cooling for disc brakes
    • F16D65/853—Features relating to cooling for disc brakes with closed cooling system
    • 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
    • F16D55/00—Brakes with substantially-radial braking surfaces pressed together in axial direction, e.g. disc brakes
    • F16D2055/0004—Parts or details of disc brakes
    • F16D2055/0058—Fully lined, i.e. braking surface extending over the entire disc circumference
    • 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
    • F16D69/00—Friction linings; Attachment thereof; Selection of coacting friction substances or surfaces
    • F16D2069/004—Profiled friction surfaces, e.g. grooves, dimples

Definitions

  • the present invention therefore provides a multi- plate clutch or brake unit comprising a set of friction plates interleaved between a set of reaction plates, one set being keyed to a central shaft and the other set being keyed to a peripheral drive member, and actuation means arranged to pressure the interleaved sets of plates against one another, characterised by the provision within either the reaction plates or the friction plates of generally radially extending galleries, and means supplying cooling liquid to the central area of the set of plates such that in use the cooling liquid is caused to flow outwardly from the central area through the galleries, cooling the plates.
  • the galleries may be of any desired configuration e.g. straight and radially extending or curved with a tangential component to the inner diameter of the plate or at any desired angle to a radius of the reaction plate.
  • reaction plates are provided with a plurality of generally radially extending slots in their faces which mate with the friction plates, configured to wipe oil from the face of the friction plate.
  • the friction plates are segmented with generally radially extending passages between the segments.
  • one or more said reaction plates comprise two plate members movable relative to one another in a direction along the central shaft forming a said gallery therebetween.
  • At least one said plate member has one or more raised areas on a face facing the other said plate member.
  • said one or more raised areas comprise an annulus on the said plate.
  • Fig. 1 is a vertical cross-section through the longitudinal axis of a multi-plate clutch according to the invention
  • Fig. 2 is a transverse section through the axis of the clutch plates of the multi-plate clutch " shown in Fig. 1, showing one friction plate and one reaction plate with portions cut away for clarity
  • Fig. 3 is a cross-section on the line III-III of Fig. 2 showing the construction of an alternative form of reaction plate.
  • a multi-plate clutch (1) having an input shaft (2) and a coaxial output shaft (3) .
  • the input shaft is journaled in suitable bearings (4) in a casing (5) and is provided with keyed splines (6) which engage corresponding notches on the inner edges of friction plates (7) .
  • the set of friction plates are arrayed in a conventional multi-plate clutch configuration interleaved between a set of reaction plates (8) which in turn have notched outer peripheries keyed to a peripheral drive member (9) .
  • the drive member (9) is in turn keyed to the output shaft (3) journaled in bearings (10) within the casing (5) .
  • the clutch is actuated by actuation means in the form of hydraulic operation in conjunction with a spring pack (11) operable about a return pin (12) to move the friction plates and reaction plates into and out of pressured engagement for transmitting drive from the input shaft (2) to the output shaft (3) under controlled slip conditions .
  • the multi-plate clutch is provided with cooling means arranged to supply cooling liquid, and typically oil, under pressure into the area (13) surrounding the input shaft (2) and thence to the central area (15) of the set of plates (7) and (8) .
  • Each of the reaction plates (8) is provided with generally radially extending galleries (14) (Fig. 2) permitting oil to flow from the central area (15) outwardly through the galleries (14) , cooling the reaction plate.
  • the configuration of the galleries may be to any desired shape or configuration such as radially straight galleries as shown in Fig. 2 separated by vanes (16) .
  • This form of gallery is most suitable where the reaction plate is formed from two plate components machined to the desired configuration and sandwiched together forming the galleries (14) between the vanes (16) .
  • the reaction plates may be formed from solid material with the galleries drilled or otherwise machined through the thickness of the plate from the inner area (15) to the outer periphery (17) .
  • the galleries may be of any number and configuration, i.e. they may be radially straight or curved with a tangential component to the inner area (15) .
  • reaction plate is formed from two plate components as described above, but the two components are not secured together but are free to float relative to one another along the line of the axis of the shafts (2) and (3) .
  • the reaction plate is formed from a first plate member (20) and a second plate member (21) having outer circumferences (22) and (23) respectively and being spaced apart by the oil gallery (24) .
  • Oil being pumped through the gallery (24) in the direction of arrow (25) causes a pressure F op to be exerted as a reaction pressure between the two plates (20) and (21) which reacts against the clutch activating pressure F exerted on the outside or friction surfaces (26) of the two plate members.
  • the facing surfaces (27) and (28) of the plate members (20) and (21) respectively are provided with at least one raised area formed by step (29) in at least one of the faces (27) and (28) forming an annulus portion (30) of the plate member which will contact the opposing face (27) before the remainder of the face (28) .
  • the raised area could however take other forms.
  • step (29) has been shown in the plate member (21) it will be appreciated that it could be incorporated in both the surfaces (27) and (28) of the plates (20) and (21) respectively or alternatively could be arranged so that the thicker portion of plate (21) (as seen in Fig. 3) is located nearer to the axis of rotation of the reaction plate.
  • the reaction plates are also preferably provided with a plurality of generally radially extending slots (18) in each face of the plate, where the plate contacts the friction plate (7) , allowing the major volume of oil to be scraped from the face of the friction plate preventing hydrodynamic lock or floating between the reaction plate and the friction plate.
  • the friction plates are also preferably provided in segments separated by slots (19) to allow the major volume of oil to be scraped from the reaction plates.
  • the cooling oil Once the cooling oil has passed through the galleries (14) or through the slots (18) or (19) it is collected in the outer area (17) where it is recirculated by a pump (not shown) , and optionally through an oil cooler, and returned under pressure to the inner areas (13) and (15) for recirculation.
  • a pump not shown
  • the pressure applied to the clutch pack may be carefully monitored and modulated by electronic controlled circuitry to maintain the desired degree of speed reduction.
  • the signals for clutch pressure control may come from the belt speed at various points and compared with the output speed of the clutch shaft. This allows maximum acceleration or deceleration of the belt without stretch or induced shock waves, lengthening the life of the belt and components. Use of the clutch in this manner also reduces the drive motor power required. In mobile transport situations, signals from wheel rotational speed give a controlled rate of deceleration or can be used to prevent lock-up when the clutch is used in a braking situation.
  • the invention can also be used as a brake or as a rapid cycling clutch-brake unit in machinery applications.
  • a multi-plate clutch or brake unit comprising a set of friction plates interleaved between a set of reaction plates, one set being keyed to a central shaft and the other set being keyed to a peripheral drive member, and actuation means arranged to pressure the interleaved sets of plates against one another, characterised by the provision within either the reaction plates or the friction plates of generally radially extending galleries, and means supplying cooling liquid to the central area of the set of plates such that in use the cooling liquid is caused to flow outwardly from the central area through the galleries, cooling the plates.
  • a multi-plate clutch or brake unit as claimed in claim 1 wherein there are a plurality of galleries in each said plate.

Landscapes

  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Hydraulic Clutches, Magnetic Clutches, Fluid Clutches, And Fluid Joints (AREA)
  • Mechanical Operated Clutches (AREA)

Abstract

L'invention concerne une unité d'embrayage ou de frein à plateaux multiples ayant un certain nombre de plateaux de réaction (8) imbriqués avec des plateaux de friction (7) et refroidis par un liquide tel qu'une huile pompée depuis une zone centrale (15) par des passages (14) dans les plateaux de réaction. Les plateaux de réaction peuvent éventuellement être formés de deux éléments de plateaux flottants avec un passage d'huile entre eux, en ayant une zone surélevée sur leurs faces correspondantes permettant à l'huile du passage de réagir à la force de fermeture de l'embrayage durant l'engagement.
PCT/AU1993/000526 1992-10-13 1993-10-13 Embrayage a plateaux multiples WO1994009284A1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
AU51460/93A AU671676B2 (en) 1992-10-13 1993-10-13 Multi-plate clutch

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
AUPL526292 1992-10-13
AUPL5262 1992-10-13

Publications (1)

Publication Number Publication Date
WO1994009284A1 true WO1994009284A1 (fr) 1994-04-28

Family

ID=3776471

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/AU1993/000526 WO1994009284A1 (fr) 1992-10-13 1993-10-13 Embrayage a plateaux multiples

Country Status (2)

Country Link
WO (1) WO1994009284A1 (fr)
ZA (1) ZA937612B (fr)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6505723B1 (en) * 2001-08-09 2003-01-14 Borgwarner Inc. Multi-disc clutch separator plate
CN102502183A (zh) * 2011-10-14 2012-06-20 力博重工科技股份有限公司 限矩型接触式逆止器

Citations (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR918905A (fr) * 1944-08-07 1947-02-21 Budd Wheel Co Perfectionnements aux mécanismes à friction
DE1600001A1 (de) * 1965-01-21 1970-02-26 Mount Hope Machinery Ltd Scheibenbremse
AU8695975A (en) * 1975-11-26 1977-06-02 Robert Howell Industries, Inc Aliquid cooled disc brake assemble
US4027758A (en) * 1974-11-15 1977-06-07 Ab Bofors Wet disc clutch and method of force cooling the same
WO1981001596A1 (fr) * 1979-11-28 1981-06-11 Lorean Mfg Co Frein a disque refroidi par un liquide pour un differentiel d'un vehicule a chenille
GB2087998A (en) * 1980-11-26 1982-06-03 Massey Ferguson Services Nv Multiple disc brake
GB2141193A (en) * 1983-06-11 1984-12-12 Lucas Ind Plc Improvements in vehicle disc brakes of the liquid cooled type
EP0308048A1 (fr) * 1987-07-28 1989-03-22 LUCAS INDUSTRIES public limited company Organe rotatif pour un frein à disque avec refroidissement à liquide pour véhicules
JPH03239818A (ja) * 1990-02-14 1991-10-25 Yamaha Motor Co Ltd 湿式多板クラッチ装置
JPH03239819A (ja) * 1990-02-15 1991-10-25 Yamaha Motor Co Ltd 湿式多板クラッチ装置

Patent Citations (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR918905A (fr) * 1944-08-07 1947-02-21 Budd Wheel Co Perfectionnements aux mécanismes à friction
DE1600001A1 (de) * 1965-01-21 1970-02-26 Mount Hope Machinery Ltd Scheibenbremse
US4027758A (en) * 1974-11-15 1977-06-07 Ab Bofors Wet disc clutch and method of force cooling the same
AU8695975A (en) * 1975-11-26 1977-06-02 Robert Howell Industries, Inc Aliquid cooled disc brake assemble
WO1981001596A1 (fr) * 1979-11-28 1981-06-11 Lorean Mfg Co Frein a disque refroidi par un liquide pour un differentiel d'un vehicule a chenille
GB2087998A (en) * 1980-11-26 1982-06-03 Massey Ferguson Services Nv Multiple disc brake
GB2141193A (en) * 1983-06-11 1984-12-12 Lucas Ind Plc Improvements in vehicle disc brakes of the liquid cooled type
EP0308048A1 (fr) * 1987-07-28 1989-03-22 LUCAS INDUSTRIES public limited company Organe rotatif pour un frein à disque avec refroidissement à liquide pour véhicules
JPH03239818A (ja) * 1990-02-14 1991-10-25 Yamaha Motor Co Ltd 湿式多板クラッチ装置
JPH03239819A (ja) * 1990-02-15 1991-10-25 Yamaha Motor Co Ltd 湿式多板クラッチ装置

Non-Patent Citations (2)

* Cited by examiner, † Cited by third party
Title
PATENT ABSTRACTS OF JAPAN, M-1203, page 4; & JP,A,3 239 818, (YAMAHA MOTOR CO. LTD.), 25 October 1991. *
PATENT ABSTRACTS OF JAPAN, M-1203, page 4; & JP,A,3 239 819, (YAMAHA MOTOR CO. LTD.), 25 October 1991. *

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6505723B1 (en) * 2001-08-09 2003-01-14 Borgwarner Inc. Multi-disc clutch separator plate
CN102502183A (zh) * 2011-10-14 2012-06-20 力博重工科技股份有限公司 限矩型接触式逆止器

Also Published As

Publication number Publication date
ZA937612B (en) 1994-05-05

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