CN201474599U - Double-thread fixed-type bearing of screw drill - Google Patents
Double-thread fixed-type bearing of screw drill Download PDFInfo
- Publication number
- CN201474599U CN201474599U CN2009202263114U CN200920226311U CN201474599U CN 201474599 U CN201474599 U CN 201474599U CN 2009202263114 U CN2009202263114 U CN 2009202263114U CN 200920226311 U CN200920226311 U CN 200920226311U CN 201474599 U CN201474599 U CN 201474599U
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- bearing
- main shaft
- fixed
- hydraulic motor
- screw thread
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Abstract
The utility model relates to a double-thread fixed-type bearing of a screw drill, which sequentially comprises an upper shell (2) and an upper TC bearing (1) which are installed on the upper part of a main shaft (7) from interior to exterior, wherein a lower shell (6), a lower TC bearing (5) and a fixed nut (4) are sequentially arranged on the lower part of the main shaft (7) from exterior to the interior; a thrusting bearing (3) is arranged between the upper TC bearing (1) and the lower TC bearing (5), the inner ring of the thrusting bearing (3) is connected with the fixed nut (4) through the lower TC bearing (5), both the lower TC bearing (5) and the fixed nut (4) are connected with the main shaft (7) through threads, and the upper TC bearing (1) is connected with the main shaft (7) through threads. During the drilling process, the double-thread fixed-type bearing of the screw drill can effectively prevent the thrusting bearing and the TC bearing from loosening and playing caused by the improper fixture not to cause the easy wearing and easy damage.
Description
Technical field
The utility model relates to a kind of directed drilling equipment, is specifically related to a kind of fixed bearing of two screw threads of helicoid hydraulic motor.
Background technology
Helicoid hydraulic motor is most widely used a kind of mud motor in the oil/gas drilling.Helicoid hydraulic motor is widely used in directional well, high angle hole, horizontal well, extended reach well, Multilateral Wells, from formula well and slim hole well etc.Along with increasing of drilling tool number of applications, the stability of drill tool life also more and more receives vast drilling engineering personnel's concern, and its importance directly influences the design and construction progress of drilling well.Driving-shaft assembly is made up of main shaft, following hold-down nut, metal (upper shell, TC bearing, thrust bearing.
Thrust bearing is the easiest position of becoming flexible and damaging of helicoid hydraulic motor.Traditional fixed form of thrust bearing is the extruding location by following hold-down nut, TC bearing and lower bearing shell and upper bearing (metal) shell.Traditional fixed form of TC bearing is that welded type and key are fixed.Welded type reduces owing to fuel factor makes the intensity of main shaft, and not quick detachable; Key is fixed loosening easily, and fixed effect is bad.Work in abominable downhole environment bearing group load of helicoid hydraulic motor is heavy, and be the very big fluctuating load of amplitude, if fixingly with great difficulty do not cause ball, raceway wearing and tearing, in addition cracked, and the end wear of TC bearing aggravates.How fastening TC bearing and thrust bearing become the emphasis of current research.
Summary of the invention
The purpose of this utility model be at the TC bearing of existing helicoid hydraulic motor and thrust bearing cause because of fixed form is improper loosening, aggravated the wear problems of TC bearing and thrust bearing, and the fixed bearing of two screw threads of a kind of helicoid hydraulic motor of a kind of effective fastening means to TC bearing and thrust bearing of design.
The purpose of this utility model realizes by following technological means: the fixed bearing of two screw threads of helicoid hydraulic motor, comprise successively from outside to inside upper casing and the last TC bearing that is installed in main shaft top is set, in the main shaft bottom, also be provided with successively from outside to inside lower casing, following TC bearing and hold-down nut are installed; Described going up between TC bearing and the following TC bearing is provided with thrust bearing, the inner ring of thrust bearing passes through down, and the TC bearing is connected the location with hold-down nut, following TC bearing all is connected setting by screw thread with hold-down nut with main shaft, the described TC bearing of going up links setting by screw thread and main shaft;
The outer ring of described thrust bearing is connected the location by upper casing with lower casing, between the last lower casing by the setting that is threaded; The corresponding position up and down of described main shaft is provided with screw thread.
The described screw thread of TC bearing down is set to left-handed double thread.
The described screw thread of going up the TC bearing is set to single thread.
Compared with prior art the utlity model has following tangible advantage: 1, the fixed bearing arrangement of two screw threads of helicoid hydraulic motor can effectively stop thrust bearing and TC bearing to cause problem easy to wear, flimsy because of fixing improper loosening, the play that causes.2, the fixed bearing arrangement of two screw threads of helicoid hydraulic motor does not change the structure of main shaft, does not influence the intensity of main shaft, and result of use is better.3, the fixed TC bearing arrangement of two screw threads of helicoid hydraulic motor is simple in structure, and easy accessibility is easy to processing.4, the fixed bearing arrangement of two screw threads of helicoid hydraulic motor has improved the application life of thrust bearing, thereby has improved the application life of whole helicoid hydraulic motor.
Description of drawings
Fig. 1 is a cross-sectional view of the present utility model
Among the figure, 1, go up the TC bearing, 2, upper casing, 3, thrust bearing, 4, hold-down nut, 5, TC bearing down, 6, lower casing, 7, main shaft.
The specific embodiment
Below in conjunction with the description of drawings and the specific embodiment the utility model is described in further detail:
The fixed bearing of two screw threads of helicoid hydraulic motor as shown in Figure 1 comprises upper casing 2 and the last TC bearing 1 that is installed in main shaft 7 tops is set from outside to inside successively, in main shaft 7 bottoms, also is provided with successively from outside to inside lower casing 6, following TC bearing 5 and hold-down nut 4 are installed; Described going up between TC bearing 1 and the following TC bearing 5 is provided with thrust bearing 3, the inner ring of thrust bearing 3 passes through down, and TC bearing 5 is connected the location with hold-down nut 4, following TC bearing 5 all is connected setting by screw thread with main shaft 7 with hold-down nut 4, and the described TC bearing 1 of going up links setting by screw thread and main shaft 7;
The outer ring of described thrust bearing 3 is connected the location with lower casing 6 by upper casing 2, between the last lower casing by the setting that is threaded; The corresponding position up and down of described main shaft is provided with screw thread.This locate mode can allow thrust bearing 3 and TC bearing axially fixing firmly, the phenomenon of axial float can not occur.Improved the application life of TC bearing and thrust bearing 3.The fixedly dual fail-safe of two screw threads, so the fastening meeting of thrust bearing 3 is more reliable.Thereby bearing easily loosening, easily play, problem easy to wear have been solved.
The described screw thread of TC bearing 5 down is set to left-handed double thread.This connection locate mode can allow thrust bearing 3 axially fixing firmly, the phenomenon of axial float can not occur.Improved the application life of TC bearing.
The described screw thread of going up TC bearing 1 is set to single thread.
In a word, the fixed TC bearing arrangement of two screw threads of helicoid hydraulic motor can effectively prevent to cause problem easy to wear, flimsy because of fixing improper loosening, the play that causes; In the structure that does not change main shaft, do not influence the intensity of main shaft, result of use is better.
Claims (3)
1. the fixed bearing of two screw threads of helicoid hydraulic motor, comprise successively from outside to inside upper casing (2) and the last TC bearing (1) that is installed in main shaft (7) top is set, in main shaft (7) bottom, also be provided with successively from outside to inside lower casing (6), following TC bearing (5) and hold-down nut (4) are installed; It is characterized in that: described going up between TC bearing (1) and the following TC bearing (5) is provided with thrust bearing (3), the inner ring of thrust bearing (3) passes through down, and TC bearing (5) is connected the location with hold-down nut (4), following TC bearing (5) all is connected setting by screw thread with main shaft (7) with hold-down nut (4), and the described TC bearing (1) of going up links setting by screw thread and main shaft (7);
The outer ring of described thrust bearing (3) is connected the location with lower casing (6) by upper casing (2), between the last lower casing by the setting that is threaded; The corresponding position up and down of described main shaft is provided with screw thread.
2. the fixed bearing of two screw threads of a kind of helicoid hydraulic motor according to claim 1 is characterized in that: the described screw thread of TC bearing (5) down is set to left-handed double thread.
3. the fixed bearing of two screw threads of a kind of helicoid hydraulic motor according to claim 1 is characterized in that: the described screw thread of going up TC bearing (1) is set to single thread.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009202263114U CN201474599U (en) | 2009-09-11 | 2009-09-11 | Double-thread fixed-type bearing of screw drill |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009202263114U CN201474599U (en) | 2009-09-11 | 2009-09-11 | Double-thread fixed-type bearing of screw drill |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201474599U true CN201474599U (en) | 2010-05-19 |
Family
ID=42410846
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2009202263114U Expired - Fee Related CN201474599U (en) | 2009-09-11 | 2009-09-11 | Double-thread fixed-type bearing of screw drill |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201474599U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106402147A (en) * | 2016-10-13 | 2017-02-15 | 潍坊市宇宏石油机械有限公司 | Novel TC bearing combination for screw drill and production technology of TC bearing rings of TC bearing combination |
-
2009
- 2009-09-11 CN CN2009202263114U patent/CN201474599U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106402147A (en) * | 2016-10-13 | 2017-02-15 | 潍坊市宇宏石油机械有限公司 | Novel TC bearing combination for screw drill and production technology of TC bearing rings of TC bearing combination |
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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 |
Owner name: SHANDONG DONGYUAN PETROLEUM EQUIPMENT CO., LTD. Free format text: FORMER NAME: ZOUCHENG DONGYUAN PETROLEUM MACHINERY CO., LTD. |
|
| CP03 | Change of name, title or address |
Address after: 273500 south section of West Outer Ring Road, Ji'nan City, Shandong, Zoucheng Patentee after: SHANDONG DONGYUAN PETROLEUM EQUIPMENT CO., LTD. Address before: 619, Xingye Road, Zoucheng Industrial Park, Shandong, Jining 273500, China Patentee before: Zoucheng Dongyuan Petroleum Machinery Co., Ltd. |
|
| C56 | Change in the name or address of the patentee | ||
| CP02 | Change in the address of a patent holder |
Address after: 273500 south section of West Outer Ring Road, Jining City, Shandong, Zoucheng Patentee after: SHANDONG DONGYUAN PETROLEUM EQUIPMENT CO., LTD. Address before: 273500 south section of West Outer Ring Road, Ji'nan City, Shandong, Zoucheng Patentee before: SHANDONG DONGYUAN PETROLEUM EQUIPMENT CO., LTD. |
|
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20100519 Termination date: 20170911 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |