CN201358724Y - Automatic pressure-regulating oil seal driving shaft assembly - Google Patents
Automatic pressure-regulating oil seal driving shaft assembly Download PDFInfo
- Publication number
- CN201358724Y CN201358724Y CNU2008201443878U CN200820144387U CN201358724Y CN 201358724 Y CN201358724 Y CN 201358724Y CN U2008201443878 U CNU2008201443878 U CN U2008201443878U CN 200820144387 U CN200820144387 U CN 200820144387U CN 201358724 Y CN201358724 Y CN 201358724Y
- Authority
- CN
- China
- Prior art keywords
- driving shaft
- shaft assembly
- sealing device
- oil seal
- transmission shaft
- 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 - Fee Related
Links
Abstract
The utility model relates to an automatic pressure-regulating oil seal driving shaft assembly, which is characterized in that the device is arranged on a cardan shaft assembly through screw threads, and the lower shaft body of a driving shaft is connected with the upper shaft body of the driving shaft through screw threads; the lower shaft body of the driving shaft is sealed with a lower shell through a lower sealing device, and the upper shaft body of the driving shaft is sealed with an upper shell through an upper sealing device; a thrust bearing is positioned at the lower part of a TC bearing, and both the upper sealing device and the lower sealing device are provided with automatic regulating devices. The utility model effectively improves the service life of the driving shaft assembly and can prolong the service life of the driving shaft; the driving shaft assembly with the oil seal structure can increase the diameter of the driving shaft, increase internal space, enhance overload capacity, reduce the drilling pipe falling accidents, and better adapt to a harsher industrial and mining environment.
Description
Technical field
The present invention relates to a kind of power transmission shaft general name of helicoid hydraulic motor, particularly relate to a kind of automatic pressure-regulating oil seal transmission shaft assembly.
Background technology
In the prior art, as shown in Figure 2, owing to adopt open architecture, in the drilling fluid of string bearing working in containing the abrasiveness gram, therefore can quicken the wearing and tearing of TC bearing and string bearing, reduced the application life of driving-shaft assembly significantly, and lubricating for the ease of bearing, the string bearing adopts angular contact, and axial supporting capacity is restricted.Simultaneously, at work,, reduced its application life because axial shock loading strengthens the frictional force of bearing.
Summary of the invention
The purpose of this utility model is exactly in order to address the above problem, and provide a kind of automatic pressure-regulating oil seal transmission shaft assembly, pass through the technical program, not only can improve the application life of power transmission shaft, and can increase the diameter dimension of power transmission shaft, make and the in use effectively anti-falling stop well accident of helicoid hydraulic motor increased safety.
The technical scheme that the utility model solves the problems of the technologies described above is: a kind of automatic pressure-regulating oil seal transmission shaft assembly, it is characterized in that: this device is by being threaded on the universal drive shaft assembly, axis body is connected by screw thread with last axis body under the power transmission shaft, axis body and lower house seal by lower sealing device under the power transmission shaft, axis body and upper shell seal by upper sealing device on the power transmission shaft, and thrust bearing is positioned at the bottom of TC bearing.
Above-mentioned going up on sealing and the lower sealing device all is equipped with self-checking device.
The beneficial effects of the utility model are: the application life of effectively having improved driving-shaft assembly, and can improve the application life of power transmission shaft, the driving-shaft assembly of employing oil seal structure can increase the diameter of power transmission shaft, increase the inner space, strengthen overload capacity, reduce the generation of the well accident that falls, more adapt to comparatively abominable industrial and mineral environment.
Description of drawings
Fig. 1 is a structural representation of the present invention.
Fig. 2 is the prior art constructions schematic diagram.
The specific embodiment
Below in conjunction with accompanying drawing this utility model is further described.
Operating principle: this device is by being threaded on the universal drive shaft assembly, and the eccentric rotary that motor is produced rotating speed and moment of torsion becomes dead axle by universal drive shaft rotates, and exports to drill bit by driving-shaft assembly, makes drill bit can break rock work.
As shown in Figure 1, the automatic pressure-regulating oil seal transmission shaft assembly that the utility model relates to, axis body (2) is connected by screw thread on axis body under the power transmission shaft (4) and the power transmission shaft, axis body under the power transmission shaft (4) seals by lower sealing device (8) with lower house (6), axis body on the power transmission shaft (2) seals by upper sealing device (12) with upper shell (1), on upper sealing device (12), following (8) sealing device, self-checking device is arranged all, can carry out pressure automatically according to the variation of external pressure regulates, make cavity pressure and drilling fluid keep equilibrium state, thereby guarantee sealing effectiveness.Thrust bearing (9), (10) are positioned at the bottom of TC bearing (11), and upper shell (1) and universal drive shaft housing be by being threaded, and axis body on the power transmission shaft (2) and universal drive shaft one end are by being threaded, and the axis body lower end connects drill bit under the power transmission shaft.
The above only is a kind of embodiment of the present utility model, is not to be used to limit protection scope of the present invention.
Claims (1)
1, automatic pressure-regulating oil seal transmission shaft assembly, it is characterized in that: this device is by being threaded on the universal drive shaft assembly, axis body is connected by screw thread with last axis body under the power transmission shaft, axis body and lower house seal by lower sealing device under the power transmission shaft, axis body and upper shell seal by upper sealing device on the power transmission shaft, thrust bearing is positioned at the bottom of TC bearing, and described going up on sealing and the lower sealing device all is equipped with self-checking device.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2008201443878U CN201358724Y (en) | 2008-12-11 | 2008-12-11 | Automatic pressure-regulating oil seal driving shaft assembly |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2008201443878U CN201358724Y (en) | 2008-12-11 | 2008-12-11 | Automatic pressure-regulating oil seal driving shaft assembly |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201358724Y true CN201358724Y (en) | 2009-12-09 |
Family
ID=41424486
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNU2008201443878U Expired - Fee Related CN201358724Y (en) | 2008-12-11 | 2008-12-11 | Automatic pressure-regulating oil seal driving shaft assembly |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201358724Y (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104196440A (en) * | 2014-07-11 | 2014-12-10 | 江汉石油钻头股份有限公司 | Sealing-type screw drill transmission shaft assembly |
-
2008
- 2008-12-11 CN CNU2008201443878U patent/CN201358724Y/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104196440A (en) * | 2014-07-11 | 2014-12-10 | 江汉石油钻头股份有限公司 | Sealing-type screw drill transmission shaft assembly |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20091209 Termination date: 20161211 |