CN201661247U - Universal shaft of screw drill - Google Patents
Universal shaft of screw drill Download PDFInfo
- Publication number
- CN201661247U CN201661247U CN2010201251466U CN201020125146U CN201661247U CN 201661247 U CN201661247 U CN 201661247U CN 2010201251466 U CN2010201251466 U CN 2010201251466U CN 201020125146 U CN201020125146 U CN 201020125146U CN 201661247 U CN201661247 U CN 201661247U
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- CN
- China
- Prior art keywords
- petal
- universal
- connecting shaft
- shaft
- universal connecting
- 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
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Abstract
The utility model discloses a universal shaft of a screw drill. The universal shaft comprises a middle regulating shaft; two petal universal joints are connected respectively with the two ends of the middle regulating shaft; each petal universal joint comprises two petal bodies which mesh with each other; communicated hollow cavities are formed inside the two petal bodies; and a universal connecting shaft is mounted inside the cavity. In normal condition, torque transmission between the two petal bodies is performed mainly through meshing petal teeth which mesh with one other, while the universal connecting shaft only plays an auxiliary role for the transmission; once the petal teeth are abraded to a certain extent, the universal connecting shaft and the meshing petal teeth transmit the torque jointly; and in the later period, the torque is transmitted mainly through the universal connecting shaft. Experiment results show that the service life of the universal shaft provided by the utility model can be increased by 3 to 4 times compared with the traditional petal universal shaft.
Description
Technical field
The utility model relates to the personal module in the helicoid hydraulic motor between a kind of oil drilling drilling rod and the drill bit, relates in particular to a kind of screw drill universal drive shaft of petal type, belongs to the petroleum machinery field.
Background technology
Helicoid hydraulic motor is one of requisite special implement of present oil drilling, the structure design of helicoid hydraulic motor, process for machining and manufacturing, especially the anti-wear performance of key components and parts, not only be related to processing and manufacturing cost and application life, and be related to what of trip-out number of times in the drilling process, thereby directly have influence on drill footage speed, the universal joint of universal drive shaft commonly used is that hollow steel pipe is radially cut into two intermeshing petal bodies at present, has the slit between the adjacent petal tooth, this slit is the space of the universal rotation of universal joint, the width of the tooth top of each petal tooth is greater than the width of its tooth root, the petal odontotripsis is not too under the serious situation, two petal bodies can axially not thrown off, owing to structural reason, the petal tooth carries out Wear-resistant Treatment by whole carburizing, wearing and tearing along with the petal tooth, the gap of its adjacent petal tooth increases gradually, thereby reduce the transmission capacity and the application life of universal drive shaft greatly, moreover, when the petal odontotripsis arrives certain degree, two petal bodies will axially be thrown off, and influence the bulk life time of helicoid hydraulic motor.
The utility model content
Technical problem to be solved in the utility model provides a kind of screw drill universal drive shaft of simple in structure, long service life.
For solving the problems of the technologies described above, the utility model by the following technical solutions:
A kind of screw drill universal drive shaft, comprise the middle tone nodal axisn, the two ends of described middle tone nodal axisn connect a petal type universal joint respectively, and described petal type universal joint comprises intermeshing two petal bodies, in two petal bodies, have the cavity of connection, in the described cavity universal connecting shaft is installed.
Below be the utility model to further improvement in the technical proposal:
The two ends of described universal connecting shaft are respectively equipped with pin-and-hole, and bearing pin is installed in pin-and-hole, and the two ends of universal connecting shaft are rotationally connected by bearing pin and two petal bodies respectively.
In transfer torque, bearing pin can also limit two petal axons to disengagement, prevents the generation of accident.
The another kind of improvement:
The pin-and-hole at the two ends of described universal connecting shaft is the decussation setting.
The another kind of improvement:
The centre position has the cambered surface groove of annular on the excircle of universal connecting shaft, has made things convenient for the revolution activity of universal connecting shaft.
The utility model adopts such scheme, two moment of torsion transmission between the petal body not only can be undertaken by intermeshing petal tooth, and can pass through the universal connecting shaft transfer torque.Under the normal condition, the moment of torsion transmission between two petal bodies mainly is to be undertaken by intermeshing petal tooth, and universal connecting shaft only plays the auxiliary transmission effect.In case the petal odontotripsis is to a certain degree, universal connecting shaft and intermeshing petal tooth be common transfer torque, and to the later stage, will mainly pass through the universal connecting shaft transfer torque.Evidence is compared with traditional petal type universal drive shaft, can improve 3～4 times application life of the present utility model.
The utility model is described in further detail below in conjunction with drawings and Examples:
Description of drawings
Accompanying drawing 1 is the structural representation of the utility model embodiment;
Accompanying drawing 2 is a universal connecting shaft structural representation among the utility model embodiment.
Among the figure: 1-middle tone nodal axisn; 2-petal type universal joint; The 3-cavity; The 4-universal connecting shaft; The 5-first petal body; The 6-second petal body; 7-first bearing pin; 8-second bearing pin; 9-first pin-and-hole; 10-second pin-and-hole; 11-cambered surface groove.
The specific embodiment
Embodiment, as shown in Figure 1, a kind of screw drill universal drive shaft, comprise middle tone nodal axisn 1, the two ends of the described middle tone nodal axisn 1 petal type universal joint 2 that is threaded respectively, described petal type universal joint comprises intermeshing two petal bodies, this petal body comprises the first petal body 5 and the second petal body 6, the cavity 3 that in the first petal body 5 and the second petal body 6, has connection, a universal connecting shaft 8 is installed in the described cavity 3, the two ends of described universal connecting shaft are respectively equipped with pin-and-hole, this pin-and-hole comprises first pin-and-hole 9 and second pin-and-hole 10, first bearing pin 7 is installed in first pin-and-hole 9, second bearing pin 8 is installed in second pin-and-hole 10, and described universal connecting shaft 8 is rotationally connected by first bearing pin 7 and the first petal body 5, be rotationally connected by second bearing pin 8 and the second petal body 6, in transfer torque, first bearing pin 7 and second bearing pin 8 can also limit the first petal body 5 and the second petal body 6 is axially thrown off, and prevents the generation of accident.
As shown in Figure 2, described first pin-and-hole 9 and second pin-and-hole 10 are the decussation setting, and the centre position on universal connecting shaft 8 excircles has the cambered surface groove 11 of annular, has made things convenient for the revolution activity of universal connecting shaft.
Under the normal condition, the moment of torsion transmission between the first petal body 5 and the second petal body 6 mainly is to be undertaken by intermeshing petal tooth, and 8 of universal connecting shafts play the auxiliary transmission effect.In case the petal odontotripsis is to a certain degree, universal connecting shaft 8 and intermeshing petal tooth be common transfer torque, and to the later stage, will mainly pass through universal connecting shaft 8 transfer torques.Evidence is compared with traditional petal type universal drive shaft, can improve 3～4 times application life of the present utility model.
Claims (4)
1. screw drill universal drive shaft, comprise middle tone nodal axisn (1), the two ends of described middle tone nodal axisn (1) connect a petal type universal joint (2) respectively, described petal type universal joint comprises intermeshing two petal bodies, in two petal bodies, have the cavity (3) of connection, it is characterized in that: universal connecting shaft (8) is installed in the described cavity (3).
2. a kind of screw drill universal drive shaft according to claim 1, it is characterized in that: the two ends of described universal connecting shaft (8) are respectively equipped with pin-and-hole, bearing pin is installed in pin-and-hole, and the two ends of universal connecting shaft (8) are rotationally connected by bearing pin and two petal bodies respectively.
3. a kind of screw drill universal drive shaft according to claim 2 is characterized in that: the pin-and-hole at described universal connecting shaft (8) two ends is the decussation setting.
4. according to claim 2 or 3 described a kind of screw drill universal drive shafts, it is characterized in that: the centre position on described universal connecting shaft (8) excircle has the cambered surface groove (4) of annular.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010201251466U CN201661247U (en) | 2010-03-08 | 2010-03-08 | Universal shaft of screw drill |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010201251466U CN201661247U (en) | 2010-03-08 | 2010-03-08 | Universal shaft of screw drill |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201661247U true CN201661247U (en) | 2010-12-01 |
Family
ID=43231662
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2010201251466U Expired - Fee Related CN201661247U (en) | 2010-03-08 | 2010-03-08 | Universal shaft of screw drill |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201661247U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109138838A (en) * | 2018-08-29 | 2019-01-04 | 郭旭 | A kind of diamond bit |
-
2010
- 2010-03-08 CN CN2010201251466U patent/CN201661247U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109138838A (en) * | 2018-08-29 | 2019-01-04 | 郭旭 | A kind of diamond bit |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20101201 Termination date: 20110308 |