WO2001065132A1 - Bearing clutch cooling system - Google Patents

Bearing clutch cooling system Download PDF

Info

Publication number
WO2001065132A1
WO2001065132A1 PCT/NZ2001/000031 NZ0100031W WO0165132A1 WO 2001065132 A1 WO2001065132 A1 WO 2001065132A1 NZ 0100031 W NZ0100031 W NZ 0100031W WO 0165132 A1 WO0165132 A1 WO 0165132A1
Authority
WO
WIPO (PCT)
Prior art keywords
cooling system
seal
shaft
heat exchanger
roller bearing
Prior art date
Application number
PCT/NZ2001/000031
Other languages
French (fr)
Inventor
William Wesley Martin
Original Assignee
Preload International Limited
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 Preload International Limited filed Critical Preload International Limited
Priority to AU2001236253A priority Critical patent/AU2001236253A1/en
Publication of WO2001065132A1 publication Critical patent/WO2001065132A1/en

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
    • F16H—GEARING
    • F16H57/00—General details of gearing
    • F16H57/04—Features relating to lubrication or cooling or heating
    • F16H57/0412—Cooling or heating; Control of temperature
    • 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
    • F16C—SHAFTS; FLEXIBLE SHAFTS; ELEMENTS OR CRANKSHAFT MECHANISMS; ROTARY BODIES OTHER THAN GEARING ELEMENTS; BEARINGS
    • F16C37/00—Cooling of bearings

Definitions

  • the present relates to a cooling system. More particularly, the cooling system of the present invention is intended for use in bearing clutches, roller bearings or similar devices in a transmission system wherein each bearing clutch or roller bearing mediates the engagement of a rotatable body with a shaft about which it is provided.
  • roller bearings or similar devices are used to mediate the engagement of a rotatable body, such as a gear-wheel, with a shaft about which the rotatable body is rotatably provided.
  • a rotatable body such as a gear-wheel
  • a shaft about which the rotatable body is rotatably provided.
  • a cooling system for roller bearings in a transmission system comprising at least one shaft, provided about which are at least two rotatable bodies such that each roller bearing mediates the engagement of a rotatable body provided about a shaft, the cooling system comprising one or more seals, a pump and a heat exchanger, whereby the or each seal is provided about the shaft and is interposed between adjacent gear-wheels thereby creating a cavtty through which a lubricant may be cycled, via the heat exchanger, by way of the pump.
  • the or each seal may be a labyrinth seal.
  • the or each seal may be provided in the form of a reduced gap between the adjacent gear wheels.
  • each seal is annular in shape.
  • the cooling system of the present invention further comprises a seal recess, provided in a face of each gear wheel, whereby the seal recesses provided in opposing faces of adjacent gear wheels simultaneously partially receive one of said seals therein.
  • the cooling system of the present invention further comprises one or more apertures provided axially through each roller bearing and adapted to facilitate the access of lubricant to the roller bearing.
  • the heat exchanger is provided in the form of a conventional oil cooler.
  • Figure 1 is a schematic cross sectional view of a transmission system equipped with a cooling system in accordance with the embodiment.
  • Figure 2 is a partial perspective view of a roller bearing of the transmission system of Figure 1 , Best Mode(s) for Carrying Out the Invention
  • FIGS 1 and 2 there is shown a cooling system 10 in accordance with the embodiment.
  • the cooling system 10 is provided in a transmission system 12 comprising a shaft 14, about which are provided seven gear-wheels 16.
  • the engagement of each of the gear wheels 16 with the shaft 14 is mediated by a roller bearing 18.
  • Each gear-wheel 16 comprises two faces 20.
  • the cooling system 10 comprises six annular seals 22, a pump 24 and a heat exchanger 26.
  • Each annular seal 22 is partially received between the annular recesses 28 provided in the opposing faces 20 of adjacent gear-wheels 16, such that the six annular seals 22 and the seven gear-wheels 16 effectively form a sealed path 30 through which lubricant (not shown) may pass.
  • Each roller bearing 18 has provided axially extending therethrough, relative to the shaft 14, a plurality of apertures 32, adapted to facilitate the access of lubricant to the roller bearing 18.
  • the pump 24 pumps the lubricant through the sealed path 30 and, via the apertures 32. through the roller bearings 18, thereby drawing frictio ⁇ al heat therefrom.
  • the lubricant is then passed to the heat exchanger 26 where heat may be passed to a coolant fluid (not shown), such as air or water.
  • the lubricant so cooled may be returned, by the action of the pump 24, to the sealed path 30 in a cyclical manner, thereby ensuring that the roller bearings 18 are maintained within an operational temperature range.

Landscapes

  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Mounting Of Bearings Or Others (AREA)
  • General Details Of Gearings (AREA)

Abstract

A cooling (10) system for roller bearings (18) in a transmission system (12) comprising at least one shaft (14) provided about which are at least two rotatable bodies such that each roller bearing (18) mediates the engagement of a rotatable body provided about a shaft (14), the cooling system (10) comprising one or more seals (22), a pump (24) and a heat exchanger (26), whereby the or each seal (22) is provided about the shaft (14) and is interposed between adjacent gear-wheels (16) thereby creating a cavity through which a lubricant may be cycled, via the heat exchanger (26), by way of the pump (24).

Description

"Bearing Clutch Cooling System"
Field of the Invention
The present relates to a cooling system. More particularly, the cooling system of the present invention is intended for use in bearing clutches, roller bearings or similar devices in a transmission system wherein each bearing clutch or roller bearing mediates the engagement of a rotatable body with a shaft about which it is provided.
Background Art
In some transmission systems roller bearings or similar devices are used to mediate the engagement of a rotatable body, such as a gear-wheel, with a shaft about which the rotatable body is rotatably provided. Despite modern precision engineering techniques, the considerable rotational speeds involved in such systems generate appreciable quantities of frictioπal heat. It is one object of the present invention to provide a means for dissipating such heat.
The preceding discussion of the background to the invention is intended to facilitate an understanding of the present invention. However, it should be appreciated that the discussion is not an acknowledgement or admission that any of the material referred to was part of the common general knowledge in Australia as at the priority date of the application.
Throughout the specification, unless the context requires otherwise, the word "comprise" or variations such as "comprises" or "comprising", will be understood to imply the inclusion of a stated integer or group of integers but not the exclusion of any other integer or group of integers.
Disclosure of the Invention
In accordance with the present invention there is provided a cooling system for roller bearings in a transmission system comprising at least one shaft, provided about which are at least two rotatable bodies such that each roller bearing mediates the engagement of a rotatable body provided about a shaft, the cooling system comprising one or more seals, a pump and a heat exchanger, whereby the or each seal is provided about the shaft and is interposed between adjacent gear-wheels thereby creating a cavtty through which a lubricant may be cycled, via the heat exchanger, by way of the pump.
In one form of the invention, the or each seal may be a labyrinth seal. In an alternate form of the invention, the or each seal may be provided in the form of a reduced gap between the adjacent gear wheels.
In a further form of the invention, each seal is annular in shape.
Preferably, where each seal is annular in shape, the cooling system of the present invention further comprises a seal recess, provided in a face of each gear wheel, whereby the seal recesses provided in opposing faces of adjacent gear wheels simultaneously partially receive one of said seals therein.
Preferably, the cooling system of the present invention further comprises one or more apertures provided axially through each roller bearing and adapted to facilitate the access of lubricant to the roller bearing.
In one form of the invention, the heat exchanger is provided in the form of a conventional oil cooler.
Brief Description of the Drawings
The present invention will now be described, by way of example only, with reference to one embodiment thereof and the accompanying drawings in which:
Figure 1 is a schematic cross sectional view of a transmission system equipped with a cooling system in accordance with the embodiment; and
Figure 2 is a partial perspective view of a roller bearing of the transmission system of Figure 1 , Best Mode(s) for Carrying Out the Invention
In Figures 1 and 2 there is shown a cooling system 10 in accordance with the embodiment. The cooling system 10 is provided in a transmission system 12 comprising a shaft 14, about which are provided seven gear-wheels 16. The engagement of each of the gear wheels 16 with the shaft 14 is mediated by a roller bearing 18. Each gear-wheel 16 comprises two faces 20.
The cooling system 10 comprises six annular seals 22, a pump 24 and a heat exchanger 26. Provided in each face 20, about the shaft 14, is an annular recess 28. Each annular seal 22 is partially received between the annular recesses 28 provided in the opposing faces 20 of adjacent gear-wheels 16, such that the six annular seals 22 and the seven gear-wheels 16 effectively form a sealed path 30 through which lubricant (not shown) may pass.
Each roller bearing 18 has provided axially extending therethrough, relative to the shaft 14, a plurality of apertures 32, adapted to facilitate the access of lubricant to the roller bearing 18.
In use, the pump 24 pumps the lubricant through the sealed path 30 and, via the apertures 32. through the roller bearings 18, thereby drawing frictioπal heat therefrom. The lubricant is then passed to the heat exchanger 26 where heat may be passed to a coolant fluid (not shown), such as air or water. The lubricant so cooled may be returned, by the action of the pump 24, to the sealed path 30 in a cyclical manner, thereby ensuring that the roller bearings 18 are maintained within an operational temperature range.
Modifications and variations such as would be apparent to the skilled addressee are considered to fall within the scope of the present invention.

Claims

The Claims Defining the Invention are as Follows
1. A cooling system for roller bearings in a transmission system comprising at least one shaft, provided about which are at least two rotatable bodies such that each roller bearing mediates the engagement of a rotatable body provided about a shaft, characterised in that the cooling system comprising one or more seals, a pump and a heat exchanger, whereby the or each seal is provided about the shaft and is interposed between adjacent gear-wheels thereby creating a cavity through which a lubricant may be cycled, via the heat exchanger, by way of the pump.
2. A cooling system according to claim 1 characterised in that the or each seal is provided in the form of a labyrinth seal.
3. A cooling system according to claim 1 characterised in that the or each seal is provided in the form of a reduced gap between the adjacent gear wheels.
4. A cooling system according to claim 1 or 2 characterised in that each seal is annular in shape.
5. A cooling system according to claim 1 , 2 or 4 characterised in that the cooling system further comprises a seal recess, provided in a face of each gear wheel, whereby the seal recesses provided in opposing faces of adjacent gear wheels simultaneously partially receive one of said seals therein.
6. A cooling system in accordance with any one of the preceding claims characterised in that the cooling system further comprises one or more apertures provided axially through each roller bearing and adapted to facilitate the access of lubricant to the roller bearing.
7. A cooling system according to any one of the preceding claims wherein the heat exchanger is provided in the form of a conventional oil cooler. A cooling system substantially as described herein with reference to Figures 1 or 2.
PCT/NZ2001/000031 2000-03-01 2001-03-01 Bearing clutch cooling system WO2001065132A1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
AU2001236253A AU2001236253A1 (en) 2000-03-01 2001-03-01 Bearing clutch cooling system

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
AUPQ5938 2000-03-01
AUPQ5938A AUPQ593800A0 (en) 2000-03-01 2000-03-01 Bearing clutch cooling system

Publications (1)

Publication Number Publication Date
WO2001065132A1 true WO2001065132A1 (en) 2001-09-07

Family

ID=3820043

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/NZ2001/000031 WO2001065132A1 (en) 2000-03-01 2001-03-01 Bearing clutch cooling system

Country Status (2)

Country Link
AU (1) AUPQ593800A0 (en)
WO (1) WO2001065132A1 (en)

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0025758A1 (en) * 1979-09-13 1981-03-25 La Precision Industrielle Bearing for the spindle of a high-precision machine tool
US5522476A (en) * 1994-11-30 1996-06-04 Dana Corporation Lubrication system for vehicle transmission
EP0900954A1 (en) * 1997-09-02 1999-03-10 Eaton Corporation Mechanical transmission cooling and lubrication using associated engine systems

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0025758A1 (en) * 1979-09-13 1981-03-25 La Precision Industrielle Bearing for the spindle of a high-precision machine tool
US5522476A (en) * 1994-11-30 1996-06-04 Dana Corporation Lubrication system for vehicle transmission
EP0900954A1 (en) * 1997-09-02 1999-03-10 Eaton Corporation Mechanical transmission cooling and lubrication using associated engine systems

Also Published As

Publication number Publication date
AUPQ593800A0 (en) 2000-03-23

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