GB2383099A - A method of retaining and sealing a cover interiorally within an orifice in a machine housing - Google Patents

A method of retaining and sealing a cover interiorally within an orifice in a machine housing Download PDF

Info

Publication number
GB2383099A
GB2383099A GB0129630A GB0129630A GB2383099A GB 2383099 A GB2383099 A GB 2383099A GB 0129630 A GB0129630 A GB 0129630A GB 0129630 A GB0129630 A GB 0129630A GB 2383099 A GB2383099 A GB 2383099A
Authority
GB
United Kingdom
Prior art keywords
cover
orifice
housing
seating material
grooves
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.)
Withdrawn
Application number
GB0129630A
Other versions
GB0129630D0 (en
Inventor
Dirk-Olaf Leimann
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.)
ZF Wind Power Antwerpen NV
Original Assignee
Hansen Transmissions International NV
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 Hansen Transmissions International NV filed Critical Hansen Transmissions International NV
Priority to GB0129630A priority Critical patent/GB2383099A/en
Publication of GB0129630D0 publication Critical patent/GB0129630D0/en
Priority to PCT/IB2002/005166 priority patent/WO2003050440A1/en
Priority to AU2002366582A priority patent/AU2002366582A1/en
Publication of GB2383099A publication Critical patent/GB2383099A/en
Withdrawn legal-status Critical Current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
    • F16J—PISTONS; CYLINDERS; SEALINGS
    • F16J13/00—Covers or similar closure members for pressure vessels in general
    • F16J13/02—Detachable closure members; Means for tightening closures
    • 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
    • F16B—DEVICES FOR FASTENING OR SECURING CONSTRUCTIONAL ELEMENTS OR MACHINE PARTS TOGETHER, e.g. NAILS, BOLTS, CIRCLIPS, CLAMPS, CLIPS OR WEDGES; JOINTS OR JOINTING
    • F16B3/00—Key-type connections; Keys
    • F16B3/005—Key-type connections; Keys the key being formed by solidification of injected 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
    • F16J—PISTONS; CYLINDERS; SEALINGS
    • F16J15/00—Sealings
    • F16J15/02—Sealings between relatively-stationary surfaces
    • F16J15/06—Sealings between relatively-stationary surfaces with solid packing compressed between sealing surfaces
    • F16J15/064—Sealings between relatively-stationary surfaces with solid packing compressed between sealing surfaces the packing combining the sealing function with other functions
    • 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
    • F16J—PISTONS; CYLINDERS; SEALINGS
    • F16J15/00—Sealings
    • F16J15/02—Sealings between relatively-stationary surfaces
    • F16J15/14—Sealings between relatively-stationary surfaces by means of granular or plastic material, or fluid
    • 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
    • F16L—PIPES; JOINTS OR FITTINGS FOR PIPES; SUPPORTS FOR PIPES, CABLES OR PROTECTIVE TUBING; MEANS FOR THERMAL INSULATION IN GENERAL
    • F16L55/00—Devices or appurtenances for use in, or in connection with, pipes or pipe systems
    • F16L55/10—Means for stopping flow from or in pipes or hoses
    • F16L55/11—Plugs
    • F16L55/1116—Plugs glued or welded
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C66/00—General aspects of processes or apparatus for joining preformed parts
    • B29C66/50—General aspects of joining tubular articles; General aspects of joining long products, i.e. bars or profiled elements; General aspects of joining single elements to tubular articles, hollow articles or bars; General aspects of joining several hollow-preforms to form hollow or tubular articles
    • B29C66/51—Joining tubular articles, profiled elements or bars; Joining single elements to tubular articles, hollow articles or bars; Joining several hollow-preforms to form hollow or tubular articles
    • B29C66/55—Joining tubular articles, profiled elements or bars; Joining single elements to tubular articles, hollow articles or bars; Joining several hollow-preforms to form hollow or tubular articles sealing elements being incorporated into the joints, e.g. gaskets

Landscapes

  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Details Of Gearings (AREA)

Abstract

A method of retaining and sealing a cover 3 interiorally within an orifice 1 in a machine housing 2 comprises providing first and second peripherally extending grooves 5, 7 in radially confronting surfaces 4, 6 of the cover 3 and orifice 1, applying an expandable sealant 8 into at least one of the grooves 5, 7. The cover 3 is then temporarily held within the orifice 1 such that the grooves 5, 7 confront each other whilst the sealant 8 is expanded to fill both grooves 5, 7 and at least a part of the space between the cover 3 and orifice 1 to effect the retention and sealing of the cover 3 in the housing 2.

Description

<Desc/Clms Page number 1>
A COVER FOR A HOUSING (3) The present invention relates to a method of retaining and seating a cover interiorally within an orifice in a machine housing. The invention relates particularly but not exclusively to a cover for the housing of an industrial gear unit.
Covers are found on the housings of industrial gear units for various reasons including the closure of an opening used in the assembly of the internal components, or the closing of a bearing bore. Additionally covers may offer openings in the housing for, for example, inspection or adjustment of the internal components or to provide for connection of accessories.
Furthermore in gear units which are required to run under lubrication covers are necessary in order to close the housing against the escape of lubricant and the ingress of water or contaminants.
Conventionally in such gear box housings the closure of orifices has involved mechanical means of securing covers such as bolting, screwing, clamping or shrink fitting. Where the cover is round it is possible to utilise internal or external screw threading.
With such conventional closures it has been necessary to provide the mating surfaces on the cover and the housing with either a high degree of surface finish or shape conformity or alternatively to provide gasketing in addition to the mechanical clamping.
In either case the mechanical preparation of mating surfaces or provision of an extra gasket component adds to the time and expense of manufacturing the finished gear unit.
It is an objective of the present invention to provide an improved method of retaining a cover to a housing which can mitigate the above disadvantages and provide for easier assembly.
<Desc/Clms Page number 2>
Co-pending UK patent applications filed by this Applicant on the same day as this application provide different solutions to the above mentioned problems.
In accordance with one aspect of the present invention there is provided a method of retaining a cover interiorally within an orifice in a machine housing and seating a gap therebetween comprising providing a first peripherally extending groove in a radially outward facing surface of the cover and a second peripherally extending groove in a confronting radially inward facing surface of the housing, applying an expandable solidifiable seating material into at least one of the peripherally extending grooves, positioning and temporarily holding the cover within the orifice such that the first and second grooves confront each other and then expanding the seating material to fill both grooves and to occupy at least in part space between the cover and the housing such that the cover is retained and sealed in the housing by mechanical interlock of the expanded seating material interposed between them.
By a solidifiable seating material is meant a material which is substantially rigid when'set'.
The invention is particularly applicable where the machine is a gear unit and particularly a multi-stage gear unit. Such machines contain oil as a lubricant and the invention may retain and seat a cover to the housing of the gear box either above or below the oil level. Furthermore the housings of such machines are generally of cast metal and the housing surface contacted by the sealing material may be a moulded surface i. e. it is not necessary to provide a machined surface for contact by the seating material. The invention is applicable to gear unit designed for power applications ranging from 0.5 horsepower to 4000 horsepower.
Further aspects of the invention will become apparent from the following description, given by way of example only, of embodiments of the invention in conjunction with the following schematic drawings in which :-
<Desc/Clms Page number 3>
Figure 1 shows a cover retained in position within an orifice of the housing of a gear box; Figure 2 is a section view taken along A-A1 in Figure 1 ; Figure 3 is a sectional view showing the profile of the interior, radially inward facing peripheral surface of the orifice in the housing ; Figures 4 shows a sectional profile of the radially outward facing peripheral surface of the cover; Figure 5 shows the seating material in position in a groove on the peripheral surface of the cover; Figure 6 shows a sectional scrap view of the cover positioned within the orifice in the housing prior to expansion of the expandable sealant material ; Figure 7 is a sectional scrap view showing the seating material in an expanded state, and Figure 8 shows another embodiment of the invention.
Shown in the Figures 1 and 2 is a circular orifice 1 formed in the wall 2 of a cast metal gearbox housing. Retained within the orifice is a circular cover 3 having a diameter just slightly less than the diameter of the orifice such that there exists a small gap g between the two.
As can be seen in Figure 3 and 4, the radially inwardly facing peripheral surface 4 of the orifice in the housing is provided with a shallow groove 5, whilst the radially outermost peripheral surface 6 of the cover 3 is provided with a shallow groove 7. The shallow grooves 5, 7 are positioned on their respective surfaces such that when the cover in positioned within the orifice, with the surfaces 4 and 6 confronting each other, the grooves 5,7 are opposite each other, i. e. they are also confronting.
In the next step of the invention a quantity of an expandable sealing material 8 is put into the groove 7 in the cover in sufficient quantity to
<Desc/Clms Page number 4>
substantially fill this groove as shown in Figure 5. Suitable materials for the expandable sealant material include the commonly available structural polystyrene foaming products which expand a short time after application or may include elastomeric materials containing blowing agents which may be activated chemically or by heat or by time to set firm.
The cover is then positioned within the orifice in the housing such that the two shallow grooves 5,7 confront each other and the cover is temporarily held in this position by any suitable means such as adhesive tape.
In the final step of the method the expandable sealant material is caused to expand in volume by suitable means such that it spans the gap G between the confronting surfaces 4,6 and further expands into the shallow groove 5 provided in the wall of the housing.
With the solidifiable sealing material in a solidified conditions the cover 3 is thereafter retained within the orifice in the housing 2 by the mechanical interlock provided by the solidified expanded sealing material disposed within and across the two confronting grooves as shown in Figure 7.
In a preferred feature of the present invention, instead of the confronting peripheral surfaces 4, 6 of the housing and the cover respectively having a plane cylindrical profile they are each stepped to provide a confronting portion which is inclined at an angle to the remaining main portion. One such example of this is shown in Figure 6. The inwardly facing surface 4 of the housing 2 is provided with shoulder portion 9 whilst the outward facing surface 6 of the cover 3 is provided with a form matching shoulder portion 10. In this embodiment both shoulder portions 9,10 are substantially perpendicular to their respective main portions of faces 4, 6 but they need not necessarily be so.
<Desc/Clms Page number 5>
Provision of an inclined portioned to the confronting surfaces as shown assists in correctly locating the cover within the orifice by preventing the cover from being inserted too far towards the interior of the housing.
In a further preferred aspect of the invention a rubber gasket or 0 ring 11 is disposed between the confronting surfaces of the housing and cover in a position inwardly of the peripherally extending grooves. Such a seating ring may further improve the correct positioning of the cover within the orifice, and provide the necessary temporary retaining means and ultimately contribute to the seating of the gap.
Figure 8 shows a further embodiment of the invention wherein the confronting surfaces of the cover and housing each have a frusto-conical form rather than cylindrical.

Claims (12)

  1. CLAIMS 1. A method of retaining a cover interiorally within an orifice in a machine housing and sealing the gap therebetween comprising providing a first peripherally extending groove in a radially outward facing surface of the cover and a second peripherally extending groove in a confronting radially inward facing surface of the housing, applying an expandable seating material into at least one of the peripherally extending grooves, positioning and temporarily holding the cover within the orifice such that the first and second grooves confront each other and then expanding the seating material to fill both grooves and to occupy at least in part the space between the cover and the housing such that the cover is retained and sealed in the housing by mechanical interlock of the expanded seating material interposed between them.
  2. 2. A method according to claim'wherein the expandable seating material is applied to the first groove in the cover.
  3. 3. A method according to either claim 1 or claim 2 wherein the expandable seating material is a polymer.
  4. 4. A method according to claim 3 wherein the expandable seating material is an elastomer.
  5. 5. A method to any of claims 1 to 4 wherein the seating material is solidified after expansion.
  6. 6. A method according to claim 5 wherein the seating material is solidified by the action of heat.
  7. 7. A method according to claim 5 wherein the seating material is solidified by chemical activation.
  8. 8. A method according to claim 5 wherein the seating material is solidified by the passage of time.
    <Desc/Clms Page number 7>
  9. 9. A method of retaining a cover internally within an orifice in a machine housing and sealing the gap there between substantially as described herein and shown in Figures 1 to 8.
  10. 10. A machine housing having a cover retained within an orifice of the machine housing by a method according to anyone of claims 1 to 9.
  11. 11. An industrial gear unit having a cover retained within an orifice of the gear unit housing by a method according to any one of claims 1 to 9.
  12. 12. An industrial gear unit according to claim 11 wherein the power rating of the gear unit is greater than 0.5 horsepower.
GB0129630A 2001-12-12 2001-12-12 A method of retaining and sealing a cover interiorally within an orifice in a machine housing Withdrawn GB2383099A (en)

Priority Applications (3)

Application Number Priority Date Filing Date Title
GB0129630A GB2383099A (en) 2001-12-12 2001-12-12 A method of retaining and sealing a cover interiorally within an orifice in a machine housing
PCT/IB2002/005166 WO2003050440A1 (en) 2001-12-12 2002-12-05 A cover for a housing
AU2002366582A AU2002366582A1 (en) 2001-12-12 2002-12-05 A cover for a housing

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB0129630A GB2383099A (en) 2001-12-12 2001-12-12 A method of retaining and sealing a cover interiorally within an orifice in a machine housing

Publications (2)

Publication Number Publication Date
GB0129630D0 GB0129630D0 (en) 2002-01-30
GB2383099A true GB2383099A (en) 2003-06-18

Family

ID=9927410

Family Applications (1)

Application Number Title Priority Date Filing Date
GB0129630A Withdrawn GB2383099A (en) 2001-12-12 2001-12-12 A method of retaining and sealing a cover interiorally within an orifice in a machine housing

Country Status (3)

Country Link
AU (1) AU2002366582A1 (en)
GB (1) GB2383099A (en)
WO (1) WO2003050440A1 (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20150251371A1 (en) * 2012-01-19 2015-09-10 Rolls-Royce Plc Method of sealing cooling holes
US11174908B2 (en) * 2019-04-04 2021-11-16 Warner Electric Technology Llc Miniature brake and method of assembly

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102011078217A1 (en) * 2011-06-28 2013-01-03 Endress + Hauser Gmbh + Co. Kg Method for producing liquid-tight connection between housing structures of measuring device for determining e.g. density of liquid, involves making housing structures to contact such that portions of housing structures are overlapped
DE102014010899A1 (en) 2014-07-24 2016-01-28 Wabco Gmbh Rotatable axially locking and pressure-resistant cable connection

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4769166A (en) * 1987-06-01 1988-09-06 United Technologies Automotive, Inc. Expandable magnetic sealant
GB2217794A (en) * 1988-04-29 1989-11-01 Prior Clave Ltd Pressure seal
GB2252137A (en) * 1991-01-24 1992-07-29 Matsushita Electric Ind Co Ltd Geared motor with o-ring seal
WO1997035128A1 (en) * 1996-03-21 1997-09-25 Raychem Limited Sealant-carrying articles

Family Cites Families (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US723645A (en) * 1902-09-24 1903-03-24 B W Automatic Jar & Bottle Company Jar-closure.
GB259887A (en) * 1926-02-01 1926-10-21 Antoine Muguet
FR1391945A (en) * 1964-01-29 1965-03-12 Haut Rhin Manufacture Machines Permanent assembly process of two elements sleeved one on the other
US4625581A (en) * 1985-01-10 1986-12-02 Ford Motor Company Automotive component cover
JPS61197224A (en) * 1985-02-27 1986-09-01 Tsuchiya Mfg Co Ltd Method of joining pipe made of synthetic resin
FR2729645B1 (en) * 1995-01-23 1997-03-28 Joint Francais LID, TANK HAVING SUCH A LID, AND HERMETIC SEALING METHOD

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4769166A (en) * 1987-06-01 1988-09-06 United Technologies Automotive, Inc. Expandable magnetic sealant
GB2217794A (en) * 1988-04-29 1989-11-01 Prior Clave Ltd Pressure seal
GB2252137A (en) * 1991-01-24 1992-07-29 Matsushita Electric Ind Co Ltd Geared motor with o-ring seal
WO1997035128A1 (en) * 1996-03-21 1997-09-25 Raychem Limited Sealant-carrying articles

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
Japanese Patent Document JP 2000053944 A *

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20150251371A1 (en) * 2012-01-19 2015-09-10 Rolls-Royce Plc Method of sealing cooling holes
US11174908B2 (en) * 2019-04-04 2021-11-16 Warner Electric Technology Llc Miniature brake and method of assembly
US11719294B2 (en) 2019-04-04 2023-08-08 Warner Electric Technology Llc Miniature brake and method of assembly

Also Published As

Publication number Publication date
WO2003050440A1 (en) 2003-06-19
GB0129630D0 (en) 2002-01-30
AU2002366582A1 (en) 2003-06-23

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Legal Events

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WAP Application withdrawn, taken to be withdrawn or refused ** after publication under section 16(1)