CA2582770C - Adjustable position load bearing shoulder - Google Patents
Adjustable position load bearing shoulder Download PDFInfo
- Publication number
- CA2582770C CA2582770C CA2582770A CA2582770A CA2582770C CA 2582770 C CA2582770 C CA 2582770C CA 2582770 A CA2582770 A CA 2582770A CA 2582770 A CA2582770 A CA 2582770A CA 2582770 C CA2582770 C CA 2582770C
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- CA
- Canada
- Prior art keywords
- engagement
- shoulder
- wedge
- shaft
- load bearing
- 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.)
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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
- F16C—SHAFTS; FLEXIBLE SHAFTS; ELEMENTS OR CRANKSHAFT MECHANISMS; ROTARY BODIES OTHER THAN GEARING ELEMENTS; BEARINGS
- F16C19/00—Bearings with rolling contact, for exclusively rotary movement
- F16C19/22—Bearings with rolling contact, for exclusively rotary movement with bearing rollers essentially of the same size in one or more circular rows, e.g. needle bearings
- F16C19/30—Bearings with rolling contact, for exclusively rotary movement with bearing rollers essentially of the same size in one or more circular rows, e.g. needle bearings for axial load mainly
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- 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
- F16C35/00—Rigid support of bearing units; Housings, e.g. caps, covers
- F16C35/04—Rigid support of bearing units; Housings, e.g. caps, covers in the case of ball or roller bearings
- F16C35/06—Mounting or dismounting of ball or roller bearings; Fixing them onto shaft or in housing
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- 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
- F16C35/00—Rigid support of bearing units; Housings, e.g. caps, covers
- F16C35/04—Rigid support of bearing units; Housings, e.g. caps, covers in the case of ball or roller bearings
- F16C35/06—Mounting or dismounting of ball or roller bearings; Fixing them onto shaft or in housing
- F16C35/07—Fixing them on the shaft or housing with interposition of an element
Landscapes
- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Pivots And Pivotal Connections (AREA)
- Mounting Of Bearings Or Others (AREA)
Abstract
An adjustable position load bearing shoulder includes a shaft having an exterior surface with a recessed engagement profile. An engagement member is provided that has an exterior surface having exterior threads. The engagement member also has an engagement engageable with the engagement profile on the shaft. The engagement member defines an external wedge surface. An annular shoulder member is provided that has an interior surface with interior threads engageable with the exterior threads on the engagement member to selectively position the shoulder member. A wedge member is provided that has an internal wedge surface. The internal wedge surface of the wedge member engages the external wedge surface on the engagement member to lock the engagement into engagement with the engagement profile of the shaft. There are fasteners between the wedge member and the shoulder member that prevent rotational movement of the shoulder member, thereby maintaining the shoulder member in the selected position.
Description
TITLE:
Adjustable Position Load Bearing Shoulder FIELD
The present invention relates to a load bearing shoulder with an adjustable position, specifically, a load bearing shoulder for use in a drill string.
BACKGROUND
There are a variety of locking assemblies available to lock components onto a shaft, such as those produced by Tollok (www.tollok.com).
SUMMARY
There is provided an adjustable position load bearing shoulder. The adjustable position load bearing shoulder includes a shaft having an exterior surface with a recessed engagement profile. An engagement member is provided that has an exterior surface having exterior threads. The engagement member also has an engagement engageable with the engagement profile on the shaft. The engagement member defines an external wedge surface.
An annular shoulder member is provided that has an interior surface with interior threads engageable with the exterior threads on the engagement member to selectively position the shoulder member. A wedge member is provided that has an internal wedge surface. The internal wedge surface of the wedge member engages the external wedge surface on the engagement member to lock the engagement into engagement with the engagement profile of the shaft. There are fasteners between the wedge member and the shoulder member that prevent rotational movement of the shoulder member, thereby maintaining the shoulder member in the selected position.
BRIEF DESCRIPTION OF THE DRAWINGS
These and other features of the invention will become more apparent from the following description in which reference is made to the appended drawings, the drawings are for the purpose of illustration only and are not intended to in any way limit the scope of the invention to the particular embodiment or embodiments shown, wherein:
FIG.1 is a side view in section of the adjustable position load bearing shoulder.
Adjustable Position Load Bearing Shoulder FIELD
The present invention relates to a load bearing shoulder with an adjustable position, specifically, a load bearing shoulder for use in a drill string.
BACKGROUND
There are a variety of locking assemblies available to lock components onto a shaft, such as those produced by Tollok (www.tollok.com).
SUMMARY
There is provided an adjustable position load bearing shoulder. The adjustable position load bearing shoulder includes a shaft having an exterior surface with a recessed engagement profile. An engagement member is provided that has an exterior surface having exterior threads. The engagement member also has an engagement engageable with the engagement profile on the shaft. The engagement member defines an external wedge surface.
An annular shoulder member is provided that has an interior surface with interior threads engageable with the exterior threads on the engagement member to selectively position the shoulder member. A wedge member is provided that has an internal wedge surface. The internal wedge surface of the wedge member engages the external wedge surface on the engagement member to lock the engagement into engagement with the engagement profile of the shaft. There are fasteners between the wedge member and the shoulder member that prevent rotational movement of the shoulder member, thereby maintaining the shoulder member in the selected position.
BRIEF DESCRIPTION OF THE DRAWINGS
These and other features of the invention will become more apparent from the following description in which reference is made to the appended drawings, the drawings are for the purpose of illustration only and are not intended to in any way limit the scope of the invention to the particular embodiment or embodiments shown, wherein:
FIG.1 is a side view in section of the adjustable position load bearing shoulder.
2 FIG. 2 is an end view of the collet.
FIG. 3 is a side view in section along line A-A in FIG. 2 of the collet.
FIG. 4 is a side view in section of the annular shoulder member.
FIG. 5 is a side view in section of the wedge member.
FIG. 6 is an end view of the annular shoulder member.
FIG. 7 is a side view in section of an alternative of the adjustable position load bearing shoulder.
FIG. 8 is a side view in section of an alternative engagement member.
FIG. 9 is an end view of in section along line B-B in FIG. 10 of the alternative engagement member.
DETAILED DESCRIPTION
The prefen-ed embodiment, an adjustable position load bearing shoulder generally identified by reference numera110, will now be described with reference to FIG. 1 through 6.
Structure and Relationship of Parts:
Referring to FIG. 1, adjustable position load bearing shoulder 10 includes a shaft 12 that has an exterior surface 14 with a recessed engagement profile 15.
Recessed engagement profile 15 may be a circumferential groove as depicted, a series of cavities spaced circumferentially that are sufficient to receive one or more engagement pads defined below, or a series of circumferential grooves spaced along the length of shaft 12.
Referring to FIG. 2 and 3, an engagement member 16 is provided that has an exterior surface and exterior threads.
Engagement member 16 has an engagement 22 for engaging engagement profile 15.
As depicted, engagement member 16 is a collet that has an annular portion 18, and engagement 22 is made up of engagement fingers 22 that extend from annular portion 18 and engagement pads 24. Engagement pads 24 are engageable with engagement profile 15 on shaft 12.
Engagement fingers 22 define an external wedge surface 26. Referring to FIG.
4, an annular shoulder member 28 is provided that has an interior surface 30 with interior threads 32.
Referring to FIG. 1, interior threads 32 are able to engage exterior threads 21 on collet 16.
Interior threads 32 allow annular shoulder member 28 to be selectively positioned along collet 16, and thus along shaft 12, in order to act against, for example, a bearing assembly 44.
Referring to FIG. 5, a wedge member 34 is provided that has an internal wedge surface 36.
FIG. 3 is a side view in section along line A-A in FIG. 2 of the collet.
FIG. 4 is a side view in section of the annular shoulder member.
FIG. 5 is a side view in section of the wedge member.
FIG. 6 is an end view of the annular shoulder member.
FIG. 7 is a side view in section of an alternative of the adjustable position load bearing shoulder.
FIG. 8 is a side view in section of an alternative engagement member.
FIG. 9 is an end view of in section along line B-B in FIG. 10 of the alternative engagement member.
DETAILED DESCRIPTION
The prefen-ed embodiment, an adjustable position load bearing shoulder generally identified by reference numera110, will now be described with reference to FIG. 1 through 6.
Structure and Relationship of Parts:
Referring to FIG. 1, adjustable position load bearing shoulder 10 includes a shaft 12 that has an exterior surface 14 with a recessed engagement profile 15.
Recessed engagement profile 15 may be a circumferential groove as depicted, a series of cavities spaced circumferentially that are sufficient to receive one or more engagement pads defined below, or a series of circumferential grooves spaced along the length of shaft 12.
Referring to FIG. 2 and 3, an engagement member 16 is provided that has an exterior surface and exterior threads.
Engagement member 16 has an engagement 22 for engaging engagement profile 15.
As depicted, engagement member 16 is a collet that has an annular portion 18, and engagement 22 is made up of engagement fingers 22 that extend from annular portion 18 and engagement pads 24. Engagement pads 24 are engageable with engagement profile 15 on shaft 12.
Engagement fingers 22 define an external wedge surface 26. Referring to FIG.
4, an annular shoulder member 28 is provided that has an interior surface 30 with interior threads 32.
Referring to FIG. 1, interior threads 32 are able to engage exterior threads 21 on collet 16.
Interior threads 32 allow annular shoulder member 28 to be selectively positioned along collet 16, and thus along shaft 12, in order to act against, for example, a bearing assembly 44.
Referring to FIG. 5, a wedge member 34 is provided that has an internal wedge surface 36.
3 Referring to FIG. 1, internal wedge surface 36 of wedge member 34 engages external wedge surface 26 on collet 16 in order to lock engagement pads 24 into engagement with engagement profile 15 of shaft 12. Fasteners 38 are attached between wedge member 34 and shoulder member 28 that prevent rotational movement of shoulder member 28 in order to maintain its selected position. Referring to FIG. 6, fasteners 38 are inserted into annular shoulder member 28 by fastener holes 40. Wedge member 34 has a similar end view, however, fastener holes 42 in wedge member 34 (shown in FIG. 5) are slightly bigger, such that the threads of fasteners 38 are only engaged by annular shoulder member 28.
Operation:
Referring to FIG. 1 through 6, adjustable position load bearing shoulder 10 is provided as described above. Referring to FIG. 1, collet 16 is first positioned on shaft 12 such that engagement pads 24 of engagement fingers 22 engage engagement profile 15.
Annular shoulder member 28 is then positioned such that interior threads 32 engage exterior threads 21 on collet 16. Annular shoulder member 28 is then rotated until annular shoulder member 28 is positioned to exert a desired amount of preload or create a desired gap. Prior to installation, wedge member 34 is rotated until fastener holes 42 in wedge member 30 are aligned with fastener holes 40 of annular shoulder member 28. Wedge member 34 is then pushed over collet 16 such that internal wedge surface 36 engages external wedge surface 26 on collet 16. The installation of wedge member 34 causes engagement fingers 22 to exert a clamping force on shaft 12. Fasteners 38 are then used to secure wedge member 34 to annular shoulder member 28. Once properly secured, annular shoulder member 28 is then able to be used as a shoulder to support components, such as bearing assembly 44 as shown.
The engagement between engagement pads 24 and engagement profile 15 serves to positively lock the axial position of collet 16 and thereby lock the axial position of annular shoulder member 28. The threaded engagement between interior threads 32 on annular shoulder member 28 and exterior threads 21 on collet 16 allow desired positioning of annular shoulder member 28 along collet 16. Fasteners 38 prevent subsequent rotation of annular shoulder member 28 or any subsequent movement of wedge member 34, due to impact, frictional contact or vibration.
Operation:
Referring to FIG. 1 through 6, adjustable position load bearing shoulder 10 is provided as described above. Referring to FIG. 1, collet 16 is first positioned on shaft 12 such that engagement pads 24 of engagement fingers 22 engage engagement profile 15.
Annular shoulder member 28 is then positioned such that interior threads 32 engage exterior threads 21 on collet 16. Annular shoulder member 28 is then rotated until annular shoulder member 28 is positioned to exert a desired amount of preload or create a desired gap. Prior to installation, wedge member 34 is rotated until fastener holes 42 in wedge member 30 are aligned with fastener holes 40 of annular shoulder member 28. Wedge member 34 is then pushed over collet 16 such that internal wedge surface 36 engages external wedge surface 26 on collet 16. The installation of wedge member 34 causes engagement fingers 22 to exert a clamping force on shaft 12. Fasteners 38 are then used to secure wedge member 34 to annular shoulder member 28. Once properly secured, annular shoulder member 28 is then able to be used as a shoulder to support components, such as bearing assembly 44 as shown.
The engagement between engagement pads 24 and engagement profile 15 serves to positively lock the axial position of collet 16 and thereby lock the axial position of annular shoulder member 28. The threaded engagement between interior threads 32 on annular shoulder member 28 and exterior threads 21 on collet 16 allow desired positioning of annular shoulder member 28 along collet 16. Fasteners 38 prevent subsequent rotation of annular shoulder member 28 or any subsequent movement of wedge member 34, due to impact, frictional contact or vibration.
4 Variations:
While engagement profile 15 is shown below wedge member 34 in FIG. 1, it may also be below shoulder member 28, as shown in FIG. 7. Furthermore, instead of a collet as described above, referring to FIG. 8 and 9, engagement member 16 may also be a sleeve 46 with a longitudinal split 48. In this embodiment, sleeve 46 has an engagement surface 50 that may or may not be continuous and that performs a function similar to engagement pads 24 described above.
In this patent document, the word "comprising" is used in its non-limiting sense to mean that items following the word are included, but items not specifically mentioned are not excluded. A reference to an element by the indefinite article "a" does not exclude the possibility that more than one of the element is present, unless the context clearly requires that there be one and only one of the elements.
It will be apparent to one skilled in the art that modifications may be made to the illustrated embodiments without departing from scope of the Claims.
While engagement profile 15 is shown below wedge member 34 in FIG. 1, it may also be below shoulder member 28, as shown in FIG. 7. Furthermore, instead of a collet as described above, referring to FIG. 8 and 9, engagement member 16 may also be a sleeve 46 with a longitudinal split 48. In this embodiment, sleeve 46 has an engagement surface 50 that may or may not be continuous and that performs a function similar to engagement pads 24 described above.
In this patent document, the word "comprising" is used in its non-limiting sense to mean that items following the word are included, but items not specifically mentioned are not excluded. A reference to an element by the indefinite article "a" does not exclude the possibility that more than one of the element is present, unless the context clearly requires that there be one and only one of the elements.
It will be apparent to one skilled in the art that modifications may be made to the illustrated embodiments without departing from scope of the Claims.
Claims (4)
1. An adjustable position load bearing shoulder, comprising:
a shaft having an exterior surface with a recessed engagement profile;
an engagement member having an exterior surface having exterior threads, the engagement member having an engagement engageable with the engagement profile on the shaft, the engagement member defining an external wedge surface;
an annular shoulder member having an interior surface with interior threads engageable with the exterior threads on the engagement member to selectively position the shoulder member;
a wedge member having an internal wedge surface, the internal wedge surface of the wedge member engaging the external wedge surface on the engagement member to lock the engagement into engagement with the engagement profile of the shaft; and fasteners between the wedge member and the shoulder member preventing rotational movement of the shoulder member, thereby maintaining the shoulder member in the selected position.
a shaft having an exterior surface with a recessed engagement profile;
an engagement member having an exterior surface having exterior threads, the engagement member having an engagement engageable with the engagement profile on the shaft, the engagement member defining an external wedge surface;
an annular shoulder member having an interior surface with interior threads engageable with the exterior threads on the engagement member to selectively position the shoulder member;
a wedge member having an internal wedge surface, the internal wedge surface of the wedge member engaging the external wedge surface on the engagement member to lock the engagement into engagement with the engagement profile of the shaft; and fasteners between the wedge member and the shoulder member preventing rotational movement of the shoulder member, thereby maintaining the shoulder member in the selected position.
2. The adjustable load bearing shoulder of Claim 1, wherein the engagement member is a collet having engagement fingers with engagement pads engageable with the engagement profile on the shaft, the engagement fingers defining the external wedge surface.
3. The adjustable load bearing shoulder of Claim 1, wherein the engagement member is a sleeve with at least one longitudinal split.
4. The adjustable position load bearing shoulder of claim 1, wherein the engagement profile is at least one circumferential groove in the shaft.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CA2582770A CA2582770C (en) | 2007-03-19 | 2007-03-19 | Adjustable position load bearing shoulder |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CA2582770A CA2582770C (en) | 2007-03-19 | 2007-03-19 | Adjustable position load bearing shoulder |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CA2582770A1 CA2582770A1 (en) | 2008-09-19 |
| CA2582770C true CA2582770C (en) | 2011-10-18 |
Family
ID=39764617
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CA2582770A Active CA2582770C (en) | 2007-03-19 | 2007-03-19 | Adjustable position load bearing shoulder |
Country Status (1)
| Country | Link |
|---|---|
| CA (1) | CA2582770C (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| NO337229B1 (en) | 2012-07-12 | 2016-02-15 | Ace Oil Tools As | Fixing device for a pipe body provided with one or more axially projecting functional elements adapted for use on a downhole pipe body, as well as a pipe string comprising several pipe bodies |
-
2007
- 2007-03-19 CA CA2582770A patent/CA2582770C/en active Active
Also Published As
| Publication number | Publication date |
|---|---|
| CA2582770A1 (en) | 2008-09-19 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| EEER | Examination request |