CN202913946U - Screw drill - Google Patents
Screw drill Download PDFInfo
- Publication number
- CN202913946U CN202913946U CN 201220280745 CN201220280745U CN202913946U CN 202913946 U CN202913946 U CN 202913946U CN 201220280745 CN201220280745 CN 201220280745 CN 201220280745 U CN201220280745 U CN 201220280745U CN 202913946 U CN202913946 U CN 202913946U
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- Prior art keywords
- screw
- stator
- screw rod
- hollow shaft
- shaft
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Abstract
The utility model discloses a screw drill which comprises a casing, a bypass valve assembly, a motor assembly and a stator. A hollow shaft is installed in the casing through a bearing, a universal shaft is installed in the casing, the hollow shaft is connected with the universal shaft through a spline, a front end of the universal shaft is provided with a liquid hole communicated with an inner hole of the hollow shaft, a radial section of the stator is of a pentagonal-head spiral shape, a screw with a four-head radial section is arranged in the stator, and the screw is fixedly connected with the universal shaft. The screw is hollow, the top of the screw is provided with a replaceable nozzle, and the nozzle is fixed on the top of the screw through an elastic retaining ring for a hole. The screw drill is used for constructing and locating holes, drilling quality can be improved, precise geological data is provided, footage is saved, cost is reduced, engineering problem that construction can not be conducted is solved, drilling efficiency can be effectively improved, the screw drill is safe and reliable and long in service life, has high rigidity and strength, and can output larger torque so as to adapt to large-torque drilling of a complex formation.
Description
Technical field
The utility model relates to a kind of helicoid hydraulic motor.
Background technology
In fields such as oil development, geological prospecting, coal minings, in order to overcome ground obstacle and few land occupation, adopted at present the deviated directional drilling technology of beating.Helicoid hydraulic motor is exactly the special-purpose mud motor of beating deviated directional drilling.Helicoid hydraulic motor is to beat upright opening the earliest, is mainly used to now beat various directional holes and special engineered hole (such as the mine freezing hole), and maximum drilling depth reaches 9023 meters.The screw drill minimum diameter is 44.5 millimeters in the world at present, and maximum gauge is 304.8 millimeters.The existing helicoid hydraulic motor of producing and using, be generally 150～200 hours its application life, and helicoid hydraulic motor mainly is comprised of four large assemblies such as bypass valve, fluid motor, universal drive shaft and power transmission shafts, and its weak link is that the high temperature resistant degree of stator rubber is low, and bearing is fragile.And stator radially section be oval-shaped inside spin, the rotor radial section is the external spiral of cam-shaped.The helicoid hydraulic motor of this traditional structure form, rotating speed is higher, so that the rock bit quick abrasion; Down-hole accident also easily occurs, and in addition, the moment of torsion of this drilling tool is less, so that drilling depth is slow.
The utility model content
For the deficiency that exists on the prior art, the utility model purpose is to be to provide a kind of energy Effective Raise drilling well operating efficiency, and is safe and reliable, the helicoid hydraulic motor of long service life, have higher Rigidity and strength, can export larger moment of torsion, creep into to adapt to the bad ground high pulling torque.
To achieve these goals, the utility model is to realize by the following technical solutions:
Helicoid hydraulic motor, it comprises shell, by-pass valve assembly, motor assembly and stator, it is characterized in that: in described shell, by bearing hollow shaft is installed, in described shell, universal drive shaft is installed, described hollow shaft and universal drive shaft are with spline joint, and the leading section of described universal drive shaft is provided with the liquid flow hole that communicates with the hollow shaft endoporus, and the radially section of described stator is five capitiform helical forms, be equipped with in described stator radially that section is four-head shape screw rod, be fixedly connected with between described screw rod and the universal drive shaft; Described screw rod is hollow, and its top is provided with a removable nozzle, and described nozzle is the top that is fixed on screw rod by circlip for hole.
According to above-mentioned helicoid hydraulic motor, wherein, described bearing adopts the journal bearing by carbide mosaic.
According to above-mentioned helicoid hydraulic motor, wherein, the pitch curve of described stator and screw rod is short spoke hypocycloid.
According to above-mentioned helicoid hydraulic motor, wherein, screw rod is solid rotor.
The utility model adopts screw drill construction directional hole can improve drilling quality, accurate geologic information is provided, save drilling depth, reduce cost, solve the many engineering roadblocks that can't construct, energy Effective Raise drilling well operating efficiency, safe and reliable, long service life has higher Rigidity and strength, can export larger moment of torsion, creep into to adapt to the bad ground high pulling torque.
Description of drawings
Describe the utility model in detail below in conjunction with the drawings and specific embodiments;
Fig. 1 is structural representation of the present utility model.
The specific embodiment
For technological means, creation characteristic that the utility model is realized, reach purpose and effect is easy to understand, below in conjunction with the specific embodiment, further set forth the utility model.
Referring to Fig. 1, helicoid hydraulic motor of the present utility model, it comprises shell 10, by-pass valve assembly 11, motor assembly 12, screw rod 15 and stator 14, by bearing 17 hollow shaft 18 is installed in described shell 10, the journal bearing that this bearing 17 adopts by carbide mosaic.Universal drive shaft 16 is installed in shell 10, described hollow shaft 18 and universal drive shaft 16 are with spline joint, the leading section of described universal drive shaft 16 is provided with the liquid flow hole that communicates with hollow shaft 18 endoporus, the radially section of described stator 14 is five capitiform helical forms, be equipped with in described stator radially that section is four-head shape screw rod, be fixedly connected with between described screw rod 15 and the universal drive shaft 16.
In the present embodiment, screw rod 15 is hollow, and its top is provided with a removable nozzle 13, and described nozzle 13 is the tops that are fixed on screw rod 15 by circlip for hole, can be according to the needs conversion nozzle 13 of drilling well.
In addition, the stator 14 of the present embodiment is short spoke hypocycloid with the pitch curve of screw rod 15, and what this screw rod adopted is solid rotor.
The utility model adopts screw drill construction directional hole can improve drilling quality, accurate geologic information is provided, save drilling depth, reduce cost, solve the many engineering roadblocks that can't construct, energy Effective Raise drilling well operating efficiency, safe and reliable, long service life has higher Rigidity and strength, can export larger moment of torsion, creep into to adapt to the bad ground high pulling torque.
Above demonstration and described basic principle of the present utility model and principal character and advantage of the present utility model.The technician of the industry should understand; the utility model is not restricted to the described embodiments; that describes in above-described embodiment and the manual just illustrates principle of the present utility model; under the prerequisite that does not break away from the utility model spirit and scope; the utility model also has various changes and modifications, and these changes and improvements all fall in claimed the utility model scope.The claimed scope of the utility model is defined by appending claims and equivalent thereof
Claims (4)
1. helicoid hydraulic motor, it comprises shell, by-pass valve assembly, motor assembly and stator, it is characterized in that: in described shell, by bearing hollow shaft is installed, in described shell, universal drive shaft is installed, described hollow shaft and universal drive shaft are with spline joint, and the leading section of described universal drive shaft is provided with the liquid flow hole that communicates with the hollow shaft endoporus, and the radially section of described stator is five capitiform helical forms, be equipped with in described stator radially that section is four-head shape screw rod, be fixedly connected with between described screw rod and the universal drive shaft; Described screw rod is hollow, and its top is provided with a removable nozzle, and described nozzle is the top that is fixed on screw rod by circlip for hole.
2. helicoid hydraulic motor according to claim 1 is characterized in that, described bearing adopts the journal bearing by carbide mosaic.
3. helicoid hydraulic motor according to claim 1 is characterized in that, the pitch curve of described stator and screw rod is short spoke hypocycloid.
4. according to claim 1 or 3 described helicoid hydraulic motors, it is characterized in that, described screw rod is solid rotor.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220280745 CN202913946U (en) | 2012-06-15 | 2012-06-15 | Screw drill |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220280745 CN202913946U (en) | 2012-06-15 | 2012-06-15 | Screw drill |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202913946U true CN202913946U (en) | 2013-05-01 |
Family
ID=48162267
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201220280745 Expired - Fee Related CN202913946U (en) | 2012-06-15 | 2012-06-15 | Screw drill |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202913946U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103643891A (en) * | 2013-12-02 | 2014-03-19 | 西南石油大学 | Large-torque combination screw drill |
| CN104695853A (en) * | 2015-03-04 | 2015-06-10 | 中国海洋石油总公司 | Motor for screw drill tool and screw drill tool provided with motor |
| CN108798522A (en) * | 2017-04-28 | 2018-11-13 | 中石化石油工程技术服务有限公司 | A kind of screw drive rock bit |
-
2012
- 2012-06-15 CN CN 201220280745 patent/CN202913946U/en not_active Expired - Fee Related
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103643891A (en) * | 2013-12-02 | 2014-03-19 | 西南石油大学 | Large-torque combination screw drill |
| CN104695853A (en) * | 2015-03-04 | 2015-06-10 | 中国海洋石油总公司 | Motor for screw drill tool and screw drill tool provided with motor |
| CN108798522A (en) * | 2017-04-28 | 2018-11-13 | 中石化石油工程技术服务有限公司 | A kind of screw drive rock bit |
| CN108798522B (en) * | 2017-04-28 | 2023-07-21 | 中石化石油工程技术服务有限公司 | Screw driving roller bit |
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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: 20130501 Termination date: 20180615 |