CN202000920U - Seal connection device for ball joint cardan shaft - Google Patents
Seal connection device for ball joint cardan shaft Download PDFInfo
- Publication number
- CN202000920U CN202000920U CN2011200786726U CN201120078672U CN202000920U CN 202000920 U CN202000920 U CN 202000920U CN 2011200786726 U CN2011200786726 U CN 2011200786726U CN 201120078672 U CN201120078672 U CN 201120078672U CN 202000920 U CN202000920 U CN 202000920U
- Authority
- CN
- China
- Prior art keywords
- ball
- joint
- short circuit
- ball joint
- locking nut
- 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 a seal connection device for a ball joint cardan shaft. In order to overcome the defects that: in the traditional seal device for the ball joint cardan shaft of a screw drill, after a locking nut is connected with a short joint, the locking nut is not easily fixed, resulting in non-tight seal and oil leakage, so that the service life of the cardan shaft is greatly shortened. The utility model is characterized in that: the ball joint shaft is positioned between two short joints, and each short joint is connected with the ball joint shaft through a seal device; one end of an oil seal of the seal device is fixedly connected with the ball joint shaft through a steel clip, and the other end of the oil seal is fixedly connected with each short joint through a supporting half ring and a locking nut; and the locking nut is in threaded connection with each short joint and is positioned in an inner hole at the end part of the short joint, and the outer end of the locking nut is provided with a hole and is arranged in an inner hole groove of the short joint through a retaining ring. The utility model has the beneficial effects that: the structure is reasonable, the assembly is convenient, the tripping and upside down phenomena of the locking nut is effectively avoided, and the service life of the ball joint cardan shaft is prolonged.
Description
Technical field
The utility model relates to a kind of helicoid hydraulic motor ball-joint universal drive shaft, especially relates to a kind of ball-joint universal drive shaft sealing and connecting device.
Background technology
Helicoid hydraulic motor is the widely used mud motor of oil drilling, mainly comprises by-pass valve assembly, motor assembly, universal drive shaft assembly and driving-shaft assembly, and the composition that from top to bottom is fixedly connected sequentially.Universal drive shaft mainly contains the petal type universal drive shaft, scratches shaft type universal drive shaft and ball-joint formula universal drive shaft, and wherein the ball-joint universal drive shaft is long than the petal type universal drive shaft life-span, and shaft type universal drive shaft cost is low than scratching, and is used widely.The ball-joint universal drive shaft of helicoid hydraulic motor is a kind of sealed ball-joint universal drive shaft, as disclosed Chinese utility model patent on February 5th, 2003 " the hinged universal drive shaft of helicoid hydraulic motor ball sealer " (CN2534358), between the blind hole center ball-type groove of the first end of short circuit and the center ball-type groove of ball-joint shaft end steel ball is arranged, be embedded with steel ball near the ball-joint shaft end and along the uniform ball-type groove of excircle, the ball-joint axle that is embedded with steel ball is positioned at the groove of the first end of short circuit, gapped between the inner surface of steel ball and groove, be connected by sealing device between short circuit head and the ball-joint axle.Sealing device mainly is to form an annular seal space at the ball-joint position, and short circuit head and ball-joint axle are coupled together.Oil sealing is a flexible piece, and fixedlys connected with short circuit head with the ball-joint axle.Existing oil sealing mostly is rubber parts, and an end is fixedlyed connected with the ball-joint axle by clamp, and the other end is fixedlyed connected with short circuit head with locking nut by semi-ring.Because locking nut is with after short circuit head is connected, difficult fixing particularly is easy to take place back-off, dropout during transmitting large torque, causes poorly sealed, leakage of oil, and universal drive shaft reduces application life greatly.
The utility model content
For the locking nut that overcomes the existing hinged universal drive shaft sealing device of helicoid hydraulic motor ball sealer with after short circuit head is connected, be difficult for fixing, particularly be easy to take place back-off, dropout during transmitting large torque, cause poorly sealed, leakage of oil, the deficiency that universal drive shaft reduces application life greatly, the utility model provides a kind of ball-joint universal drive shaft sealing and connecting device.
The technical scheme that its technical problem that solves the utility model adopts is: the ball-joint axle is between 2 short circuit heads, be connected by sealing device between short circuit head and the ball-joint axle, one end of sealing device oil sealing is fixedlyed connected with the ball-joint axle by clamp, the other end is fixedlyed connected with short circuit head by support semi-ring, lock nut, lock nut is threaded with short circuit head and is arranged in short circuit head end endoporus, is installed in the short circuit head in the hole slot with back-up ring near the lock nut outer end is porose.
The beneficial effects of the utility model are, and are rational in infrastructure, are convenient to assembling, avoid effectively that lock nut is threaded off, the generation of back-off phenomenon, prolong the application life of ball-joint universal drive shaft.
Description of drawings
Fig. 1 is the utility model ball-joint universal drive shaft sealing and connecting device structural representation.
Among the figure: 1. short circuit head, 2. cross recess, 3. sealing device, 4. the steel card 5. supports semi-ring, 6. lock nut, 7. hole back-up ring, 8. oil sealing, 9. ball-joint axle.
The specific embodiment
The utility model is described in further detail below in conjunction with drawings and Examples.But what those skilled in the art should know is to the invention is not restricted to the listed specific embodiment, as long as spirit according to the invention all should be included in protection scope of the present invention.
The utility model ball-joint universal drive shaft sealing and connecting device comprises short circuit head 1, ball-joint axle 9, sealing device 3, and ball-joint axle 9 is between 2 short circuit heads 1, and short circuit head 1 is fixedlyed connected by sealing device 3 with ball-joint axle 9.The oil sealing 8 of sealing device 3 is generally flexible piece, multiselect rubber parts material, and an end of oil sealing 8 is fixedlyed connected with ball-joint axle 9 by steel card 4, and the other end is fixedlyed connected with short circuit head 1 by support semi-ring 5, lock nut 6.Lock nut 6 is threaded with short circuit head 1 and is arranged in short circuit head 1 end endoporus, be installed in the short circuit head 1 interior hole slot with back-up ring 7 near lock nut 6 outer ends are porose, effectively prevent because of lock nut 6 back-offs, thread off and destroy the sealing performance of sealing device 3, or make universal drive shaft damage.For the ease of installing, cross recess 2 is arranged in the end of lock nut 6.
It should be noted that the foregoing description is example and unrestricted the present invention, those skilled in the art can design a lot of alternate embodiments and not break away from the claim scope of this patent.
Claims (1)
1. ball-joint universal drive shaft sealing and connecting device, comprise short circuit head, the ball-joint axle, sealing device, the ball-joint axle is between 2 short circuit heads, be connected by sealing device between short circuit head and the ball-joint axle, one end of sealing device oil sealing is fixedlyed connected with the ball-joint axle by the steel card, the other end is by supporting semi-ring, lock nut is fixedlyed connected with short circuit head, it is characterized in that: described lock nut (6) is threaded with short circuit head (1) and is arranged in short circuit head (1) end endoporus, is installed in the interior hole slot of short circuit head (1) with back-up ring (7) near lock nut (6) outer end is porose.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011200786726U CN202000920U (en) | 2011-03-23 | 2011-03-23 | Seal connection device for ball joint cardan shaft |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011200786726U CN202000920U (en) | 2011-03-23 | 2011-03-23 | Seal connection device for ball joint cardan shaft |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202000920U true CN202000920U (en) | 2011-10-05 |
Family
ID=44703665
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2011200786726U Expired - Fee Related CN202000920U (en) | 2011-03-23 | 2011-03-23 | Seal connection device for ball joint cardan shaft |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202000920U (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105065481A (en) * | 2015-08-13 | 2015-11-18 | 胜利油田胜利泵业有限责任公司 | Universal joint of oil-submerged electric screw pump |
| CN105604497A (en) * | 2016-02-26 | 2016-05-25 | 江苏省无锡探矿机械总厂有限公司 | Quickly-dismounted universal output connector of soil sampling and restoration integrated drilling machine |
| CN106224398A (en) * | 2016-08-31 | 2016-12-14 | 天津立林石油机械有限公司 | Petal type ball-type universal drive shaft |
| CN108518188A (en) * | 2018-03-20 | 2018-09-11 | 西南石油大学 | A kind of high antitorque screw drill sealing-ball hinge universal shaft |
-
2011
- 2011-03-23 CN CN2011200786726U patent/CN202000920U/en not_active Expired - Fee Related
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105065481A (en) * | 2015-08-13 | 2015-11-18 | 胜利油田胜利泵业有限责任公司 | Universal joint of oil-submerged electric screw pump |
| CN105604497A (en) * | 2016-02-26 | 2016-05-25 | 江苏省无锡探矿机械总厂有限公司 | Quickly-dismounted universal output connector of soil sampling and restoration integrated drilling machine |
| CN106224398A (en) * | 2016-08-31 | 2016-12-14 | 天津立林石油机械有限公司 | Petal type ball-type universal drive shaft |
| CN108518188A (en) * | 2018-03-20 | 2018-09-11 | 西南石油大学 | A kind of high antitorque screw drill sealing-ball hinge universal shaft |
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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 |
Granted publication date: 20111005 Termination date: 20200323 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |