CN203879406U - Screw drill lower centralizer bearing - Google Patents
Screw drill lower centralizer bearing Download PDFInfo
- Publication number
- CN203879406U CN203879406U CN201420331377.0U CN201420331377U CN203879406U CN 203879406 U CN203879406 U CN 203879406U CN 201420331377 U CN201420331377 U CN 201420331377U CN 203879406 U CN203879406 U CN 203879406U
- Authority
- CN
- China
- Prior art keywords
- lower centralizer
- bearing
- lower righting
- centralizer
- hydraulic motor
- 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.)
- Expired - Lifetime
Links
- 230000005540 biological transmission Effects 0.000 claims abstract description 11
- 239000000956 alloy Substances 0.000 claims description 13
- 229910045601 alloy Inorganic materials 0.000 claims description 13
- 230000000694 effects Effects 0.000 abstract description 4
- 230000003068 static effect Effects 0.000 abstract 2
- 230000013011 mating Effects 0.000 abstract 1
- 238000005553 drilling Methods 0.000 description 3
- 239000012530 fluid Substances 0.000 description 2
- 238000005452 bending Methods 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000001816 cooling Methods 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 230000003628 erosive effect Effects 0.000 description 1
Landscapes
- Sliding-Contact Bearings (AREA)
Abstract
The utility model relates to a screw drill lower centralizer bearing, which comprises a lower centralizer static sleeve and a lower centralizer dynamic sleeve, wherein the lower centralizer dynamic sleeve is sleeved outside a transmission shaft, and is sleeved in a shell, and an outer circle of the lower centralizer dynamic sleeve is matched with an inner hole of the lower centralizer dynamic sleeve to form a rotary mating surface. The screw drill lower centralizer bearing is characterized in that the rotary matching surface is a rotary surface with a big upper portion and a small lower portion, and is formed by adopting a circular arc or a smooth connected curve as a bus. The screw drill lower centralizer bearing enables the transmission shaft to have a deflection condition under the action of force, enables the lower centralizer dynamic sleeve which is connected with the transmission shaft together to be contacted with the lower centralizer static sleeve, prevents points on upper and lower opposite angles to contact, and enlarges a work surface of a centralizer bearing, thereby effectively improving use performance and effect of a lower centralizer bearing, being capable of greatly reducing local wear of the lower centralizer bearing when running, and effectively prolonging service life of a screw drill.
Description
Technical field
The utility model relates to a kind of lower alignment bearing for oil, gas drilling field and helicoid hydraulic motor configuration.
Background technology
Helicoid hydraulic motor is normally made up of bypass valve, motor, universal drive shaft, driving-shaft assembly etc., and driving-shaft assembly is made up of string bearing, journal bearing and driving shaft etc., wherein journal bearing is divided into again alignment bearing and lower alignment bearing, and lower alignment bearing bears the lateral force that drill bit produces in helicoid hydraulic motor, there is drilling fluid Cooling and Lubricator, this just requires the long-time erosion of the not only wear-resisting but also resistance to drilling fluid of lower alignment bearing, and therefore descending alignment bearing is the critical component that affects the application life of drill rod boring tool.
And the lateral force that is subject to stratum due to drill bit causes the power transmission shaft of helicoid hydraulic motor that a certain amount of bending occurs, " point " that cause the fitting face of the moving cover of lower righting on power transmission shaft and the quiet cover of lower righting with matching that in fact upper and lower diagonal angle occurs in the time working contacts, work plane is only less than 1/3rd of total length, so not only have a strong impact on functional performance and the effect of lower alignment bearing, and when running cause the local huge heat that produces, local wearing layer serious wear, makes the fast reducing in application life of helicoid hydraulic motor.
Summary of the invention
Technical problem to be solved in the utility model is the deficiency existing for above-mentioned prior art, and alignment bearing under a kind of helicoid hydraulic motor that can make effectively to be improved in its behavior in service and application life is provided.
The utility model for the technical scheme that the problem of the above-mentioned proposition of solution adopts is: comprise the moving cover of the quiet cover of lower righting and lower righting, lower righting is moving to be sleeved on outside power transmission shaft, the quiet cover of lower righting is installed in housing, the cylindrical of the moving cover of lower righting forms revolution fitting face with the endoporus phase configuration of the quiet cover of lower righting, and the revolution fitting face described in it is characterized in that is the up big and down small surface of revolution being formed for bus by circular arc or the curve that is smoothly connected.
Press such scheme, the radius of gyration of the described revolution fitting face shape that tapers off from top to down.
Press such scheme, described revolution fitting face is half cydariform.
Press such scheme, in described surface of revolution bus, include the part straight line parallel with axis of rotation.
Press such scheme, the cylindrical of the described moving cover of lower righting is coated with alloy wear-resisting layer, and the described quiet cover endoporus of lower righting correspondence is provided with alloy wear-resisting layer.
Press such scheme, described wear-resistant alloy layer is made up of antifriction alloy arc piece.
The beneficial effects of the utility model are: the shape of 1, descending alignment bearing revolution fitting face by change, make power transmission shaft in the case of the effect of power deflects, the moving cover of lower righting linking together with power transmission shaft can still keep face to contact with the quiet cover of lower righting, avoid occurring " point " contact at upper and lower diagonal angle, make the proud expansion of work plane of alignment bearing, so not only effectively improve functional performance and the effect of lower alignment bearing, and can greatly reduce the concentrated wear of when running bearing, effectively extended the application life of helicoid hydraulic motor; 2, alloy wear-resisting layer being set can make the use of lower alignment bearing and anti-wear performance further be strengthened.
Brief description of the drawings
The axial sectional view of an embodiment of Fig. 1 the utility model.
Fig. 2 is the partial enlarged drawing of axial sectional view in Fig. 1.
Detailed description of the invention
Further illustrate embodiment of the present utility model below in conjunction with accompanying drawing, comprise the moving cover 2 of the quiet cover 1 of lower righting and lower righting and power transmission shaft 3, the quiet cover 1 of lower righting is inserted in housing endoporus, be connected by screw thread and housing, the moving cover 2 of lower righting is set on power transmission shaft, also be together by a threaded connection, the cylindrical of the moving cover of lower righting and the endoporus phase configuration of the quiet cover of lower righting form revolution fitting face, described revolution fitting face is half cydariform, it is the up big and down small surface of revolution that the circular arc that is R by radius of curvature forms for bus, in described surface of revolution bus, epimere includes the straight line parallel with axis of rotation.The cylindrical of the described moving cover of lower righting is coated with alloy wear-resisting layer 5, and the described quiet cover endoporus of lower righting correspondence is provided with alloy wear-resisting layer 4, and described wear-resistant alloy layer is made up of antifriction alloy arc piece.
Claims (6)
1. alignment bearing under a helicoid hydraulic motor, comprise the moving cover of the quiet cover of lower righting and lower righting, lower righting is moving to be sleeved on outside power transmission shaft, the quiet cover of lower righting is installed in housing, the cylindrical of the moving cover of lower righting forms revolution fitting face with the endoporus phase configuration of the quiet cover of lower righting, and the revolution fitting face described in it is characterized in that is the up big and down small surface of revolution being formed for bus by circular arc or the curve that is smoothly connected.
2. alignment bearing under helicoid hydraulic motor according to claim 1, the radius of gyration that the it is characterized in that described revolution fitting face shape that tapers off from top to down.
3. alignment bearing under helicoid hydraulic motor according to claim 1 and 2, is characterized in that described revolution fitting face is half cydariform.
4. alignment bearing under helicoid hydraulic motor according to claim 1, includes the part straight line parallel with axis of rotation in the surface of revolution bus described in it is characterized in that.
5. alignment bearing under helicoid hydraulic motor according to claim 1 and 2, is characterized in that the cylindrical of the moving cover of described lower righting is coated with alloy wear-resisting layer, and the described quiet cover endoporus of lower righting correspondence is provided with alloy wear-resisting layer.
6. alignment bearing under helicoid hydraulic motor according to claim 5, is characterized in that described wear-resistant alloy layer is made up of antifriction alloy arc piece.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420331377.0U CN203879406U (en) | 2014-06-20 | 2014-06-20 | Screw drill lower centralizer bearing |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420331377.0U CN203879406U (en) | 2014-06-20 | 2014-06-20 | Screw drill lower centralizer bearing |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203879406U true CN203879406U (en) | 2014-10-15 |
Family
ID=51679918
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420331377.0U Expired - Lifetime CN203879406U (en) | 2014-06-20 | 2014-06-20 | Screw drill lower centralizer bearing |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203879406U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105507807A (en) * | 2016-01-22 | 2016-04-20 | 江阴东辰钻探设备有限公司 | Abrasion-resistant coating transmission shaft of screw drill |
-
2014
- 2014-06-20 CN CN201420331377.0U patent/CN203879406U/en not_active Expired - Lifetime
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105507807A (en) * | 2016-01-22 | 2016-04-20 | 江阴东辰钻探设备有限公司 | Abrasion-resistant coating transmission shaft of screw drill |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C56 | Change in the name or address of the patentee | ||
| CP01 | Change in the name or title of a patent holder |
Address after: 430223 Hubei city of Wuhan province science and Technology Park East Lake New Technology Development Zone, Road No. five Patentee after: SINOPEC OILFIELD EQUIPMENT Corp. Address before: 430223 Hubei city of Wuhan province science and Technology Park East Lake New Technology Development Zone, Road No. five Patentee before: KINGDREAM PLC |
|
| TR01 | Transfer of patent right |
Effective date of registration: 20180315 Address after: 430223, No. 5, Chinese workers' garden, Temple Hill community, East Lake New Technology Development Zone, Wuhan, Hubei Co-patentee after: SINOPEC OILFIELD EQUIPMENT Corp. Patentee after: KINGDREAM PLC Address before: 430223 Hubei city of Wuhan province science and Technology Park East Lake New Technology Development Zone, Road No. five Patentee before: SINOPEC OILFIELD EQUIPMENT Corp. |
|
| TR01 | Transfer of patent right | ||
| CX01 | Expiry of patent term |
Granted publication date: 20141015 |