CN204139962U - A kind of screw drill transmission shaft assembly - Google Patents
A kind of screw drill transmission shaft assembly Download PDFInfo
- Publication number
- CN204139962U CN204139962U CN201420449156.3U CN201420449156U CN204139962U CN 204139962 U CN204139962 U CN 204139962U CN 201420449156 U CN201420449156 U CN 201420449156U CN 204139962 U CN204139962 U CN 204139962U
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- CN
- China
- Prior art keywords
- transmission shaft
- bearing
- cover
- dynamic
- power transmission
- 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.)
- Withdrawn - After Issue
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- Sliding-Contact Bearings (AREA)
- Mounting Of Bearings Or Others (AREA)
Abstract
The utility model relates to a kind of screw drill transmission shaft assembly, it comprises transmission shaft shell (10), power transmission shaft (1) is coated with in described transmission shaft shell (10), described power transmission shaft (1) is disposed with radial dynamic bearing (12) from top to bottom, thrust bearings (9), falling-proof apparatus, the dynamic cover of lower radial bearing (3) and locating snap ring (2), radial blind axle (11) is provided with between described radial dynamic bearing (12) and transmission shaft shell (10), the quiet cover of lower radial bearing (4) is provided with between the dynamic cover (3) of described lower radial bearing and transmission shaft shell (10), described locating snap ring (2) up and down two ends respectively with power transmission shaft (1) root step with lower radial bearing is dynamic overlaps (3) and fasten.
Description
Technical field
The utility model relates to a kind of power transmission shaft, especially relates to a kind of downhole drill screw drill transmission shaft, is applied in oil drilling operation process, the main function realizing raising screw drill transmission shaft security performance and lower radial bearing cover utilization rate.Belong to oil exploitation field of mechanical technique.
Background technology
Helicoid hydraulic motor is the device providing power in recover petroleum natural gas drilling process, comprise by-pass valve assembly, anti-lost assembly, motor assembly, universal drive shaft assembly and driving-shaft assembly, driving-shaft assembly is the on-line equipment passing to drill bit power, and the quality of power transmission shaft will directly affect the application life of bit speed and helicoid hydraulic motor.The driving-shaft assembly of current routine comprises the component such as disjunctor water cap, upper journal bearing, thrust bearings, falling-proof apparatus, lower radial bearing, power transmission shaft and transmission shaft shell.Dynamic bearing dynamic cover in footpath is wherein descended to be integrally formed by screw thread and power transmission shaft are fastening, play the effect of spline, but the device of this structure when lower radial bearing move cover bear radial load and produce wearing and tearing time, lower radial bearing moves cover just cannot be continued to use, the dynamic cover of lower radial bearing can only be changed, cause frequent trips and change the dynamic cover of lower radial bearing, cost is higher, and the situation of helicoid hydraulic motor is used in a large number according to oil field, the most easy fracture place of power transmission shaft is the binding thread place that upper end power transmission shaft and disjunctor water cap connecting thread place or escape place and power transmission shaft root and lower radial bearing move cover, fall well accident, cause salvaging difficulty.
Summary of the invention
The purpose of this utility model is to overcome above-mentioned deficiency, a kind of screw drill transmission shaft assembly is provided, its structure is simple, reduce the frequency changing journal bearing, reach the effect reducing cost, improve transmission shaft strength simultaneously, can effectively prevent power transmission shaft from falling, be unlikely to fall well accident, serve good anti-lost effect.
The purpose of this utility model is achieved in that a kind of screw drill transmission shaft assembly, it comprises transmission shaft shell, power transmission shaft is coated with in described transmission shaft shell, described power transmission shaft is disposed with radial dynamic bearing from top to bottom, thrust bearings, falling-proof apparatus, the dynamic cover of lower radial bearing and locating snap ring, radial blind axle is provided with between described radial dynamic bearing and transmission shaft shell, the quiet cover of lower radial bearing is provided with between the dynamic cover of described lower radial bearing and transmission shaft shell, the upper and lower two ends of described locating snap ring are moved cover with power transmission shaft root step and lower radial bearing respectively and are fastened.
Described power transmission shaft root step is provided with multiple first draw-in groove, the upper and lower both ends of the surface of described locating snap ring are provided with multiple lug, the upper and lower two ends of the dynamic cover of described lower radial bearing offer multiple second draw-in groove, and the second draw-in groove that the lug at the upper and lower two ends of described locating snap ring moves cover with the first draw-in groove in power transmission shaft root step and lower radial bearing respectively fastens.
Described falling-proof apparatus comprises spacer, bearing ring, pressure-bearing cover and anti-lost ring, described spacer is arranged between the quiet cover of lower radial bearing and thrust bearings, described bearing ring and pressure-bearing cover are positioned at inside spacer, described pressure-bearing cover is positioned at above bearing ring, described anti-lost ring is arranged at pressure-bearing cover inner side, described power transmission shaft offers anti-lost draw-in groove, and described anti-lost ring is placed in anti-lost draw-in groove.
Described transmission shaft shell is outside equipped with supporting positive cover.
Compared with prior art, the utility model has following beneficial effect:
A kind of screw drill transmission shaft assembly of the utility model, its structure is simple, reduces the frequency changing journal bearing, reach the effect reducing cost, improve transmission shaft strength simultaneously, can effectively prevent power transmission shaft from falling, be unlikely to fall well accident, serve good anti-lost effect.
Accompanying drawing explanation
Fig. 1 is the structural representation of a kind of screw drill transmission shaft assembly of the utility model.
Fig. 2 is the partial schematic diagram of power transmission shaft in Fig. 1.
Fig. 3 is the right view of Fig. 2.
Fig. 4 is the annexation schematic diagram that in Fig. 1, locating snap ring and lower radial bearing move cover.
Wherein:
Power transmission shaft 1
Locating snap ring 2
Lower radial bearing moves cover 3
The quiet cover 4 of lower radial bearing
Supporting positive cover 5
Spacer 6
Bearing ring 7
Pressure-bearing cover 8
Thrust bearings 9
Transmission shaft shell 10
Upper radial blind axle 11
Upper radial dynamic bearing 12
Compression pad 13
Anti-lost ring 14
First draw-in groove 15
Second draw-in groove 16
Lug 17
Anti-lost draw-in groove 18.
Detailed description of the invention
See Fig. 1 ~ Fig. 4, a kind of screw drill transmission shaft assembly of the utility model, it comprises transmission shaft shell 10, power transmission shaft 1 is coated with in described transmission shaft shell 10, described power transmission shaft 1 is disposed with compression pad 13 from top to bottom, upper radial dynamic bearing 12, thrust bearings 9, falling-proof apparatus, lower radial bearing moves cover 3 and locating snap ring 2, radial blind axle 11 is provided with between described radial dynamic bearing 12 and transmission shaft shell 10, described lower radial bearing moves between cover 3 and transmission shaft shell 10 and is provided with the quiet cover 4 of lower radial bearing, described transmission shaft shell 10 is outside equipped with supporting positive cover 5, described power transmission shaft 1 root step is provided with multiple first draw-in groove 15, described locating snap ring about 2 both ends of the surface are provided with multiple lug 17, described lower radial bearing moves cover about 3 two ends and offers multiple second draw-in groove 16, the second draw-in groove 16 that the lug 17 at described locating snap ring about 2 two ends moves cover 3 with the first draw-in groove 15 in power transmission shaft 1 root step and lower radial bearing respectively fastens, described falling-proof apparatus comprises spacer 6, bearing ring 7, pressure-bearing cover 8 and anti-lost ring 14, described spacer 6 is arranged between the quiet cover 4 of lower radial bearing and thrust bearings 9, described bearing ring 7 and pressure-bearing cover 8 are positioned at inside spacer 6, described pressure-bearing cover 8 is positioned at above bearing ring 7, described anti-lost ring 14 is arranged at inside pressure-bearing cover 8, described power transmission shaft 1 offers anti-lost draw-in groove 18, described anti-lost ring 14 is placed in anti-lost draw-in groove 18.
When after the long-time drilling well of helicoid hydraulic motor, produce wear and tear because lower radial bearing moves cover 3 and power transmission shaft 1 back root part that rubs for a long time, affect result of use, now helicoid hydraulic motor pulls out of hole, the upside-down mounting of lower radial dynamic bearing 3 is sticked into the lug of locating snap ring 2, make do not have the one end of wearing and tearing to work on, different from the pastly must change lower radial dynamic bearing 3, reduce the frequency changing journal bearing, reach the effect reducing cost, and this structure is compared with routine uses at present, power transmission shaft 1 root decreases a screw thread, improve the intensity of power transmission shaft 1, power transmission shaft 1 is not easy to fracture of root, the possibility of fracture is made to concentrate on screw thread place, power transmission shaft 1 top or escape place, even if power transmission shaft 1 top produces phenomenon of rupture in drilling process, because bearing ring 7 blocks anti-lost ring 14, power transmission shaft 1 can not fall further, be unlikely to fall well accident, serve good anti-lost effect.
Claims (4)
1. a screw drill transmission shaft assembly, it is characterized in that: it comprises transmission shaft shell (10), power transmission shaft (1) is coated with in described transmission shaft shell (10), described power transmission shaft (1) is disposed with radial dynamic bearing (12) from top to bottom, thrust bearings (9), falling-proof apparatus, the dynamic cover of lower radial bearing (3) and locating snap ring (2), radial blind axle (11) is provided with between described radial dynamic bearing (12) and transmission shaft shell (10), the quiet cover of lower radial bearing (4) is provided with between the dynamic cover (3) of described lower radial bearing and transmission shaft shell (10), described locating snap ring (2) up and down two ends respectively with power transmission shaft (1) root step with lower radial bearing is dynamic overlaps (3) and fasten.
2. a kind of screw drill transmission shaft assembly according to claim 1, it is characterized in that: described power transmission shaft (1) root step is provided with multiple first draw-in groove (15), described locating snap ring (2) up and down both ends of the surface is provided with multiple lug (17), the dynamic cover (3) of described lower radial bearing offers multiple second draw-in groove (16) in two ends up and down, and the lug (17) at the upper and lower two ends of described locating snap ring (2) fastens with the first draw-in groove (15) in power transmission shaft (1) root step and dynamic the second draw-in groove (16) overlapping (3) of lower radial bearing respectively.
3. a kind of screw drill transmission shaft assembly according to claim 1 and 2, it is characterized in that: described falling-proof apparatus comprises spacer (6), bearing ring (7), pressure-bearing cover (8) and anti-lost ring (14), described spacer (6) is arranged between the quiet cover of lower radial bearing (4) and thrust bearings (9), described bearing ring (7) and pressure-bearing cover (8) are positioned at spacer (6) inner side, described pressure-bearing cover (8) is positioned at bearing ring (7) top, described anti-lost ring (14) is arranged at pressure-bearing cover (8) inner side, described power transmission shaft (1) offers anti-lost draw-in groove (18), described anti-lost ring (14) is placed in anti-lost draw-in groove (18).
4. a kind of screw drill transmission shaft assembly according to claim 1 and 2, is characterized in that: described transmission shaft shell (10) is outside equipped with supporting positive cover (5).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420449156.3U CN204139962U (en) | 2014-08-11 | 2014-08-11 | A kind of screw drill transmission shaft assembly |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420449156.3U CN204139962U (en) | 2014-08-11 | 2014-08-11 | A kind of screw drill transmission shaft assembly |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN204139962U true CN204139962U (en) | 2015-02-04 |
Family
ID=52416655
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420449156.3U Withdrawn - After Issue CN204139962U (en) | 2014-08-11 | 2014-08-11 | A kind of screw drill transmission shaft assembly |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN204139962U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104196441A (en) * | 2014-08-11 | 2014-12-10 | 江阴东辰钻探设备有限公司 | Transmission shaft assembly of screw drill |
| CN106150342A (en) * | 2016-08-25 | 2016-11-23 | 天津立林石油机械有限公司 | Helicoid hydraulic motor anticreep power transmission shaft |
| CN106567672A (en) * | 2016-11-08 | 2017-04-19 | 中国石油天然气集团公司 | Self-lubricating transmission device |
-
2014
- 2014-08-11 CN CN201420449156.3U patent/CN204139962U/en not_active Withdrawn - After Issue
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104196441A (en) * | 2014-08-11 | 2014-12-10 | 江阴东辰钻探设备有限公司 | Transmission shaft assembly of screw drill |
| CN106150342A (en) * | 2016-08-25 | 2016-11-23 | 天津立林石油机械有限公司 | Helicoid hydraulic motor anticreep power transmission shaft |
| CN106150342B (en) * | 2016-08-25 | 2020-01-14 | 天津立林石油机械有限公司 | Anti-drop transmission shaft for screw drill |
| CN106567672A (en) * | 2016-11-08 | 2017-04-19 | 中国石油天然气集团公司 | Self-lubricating transmission device |
| CN106567672B (en) * | 2016-11-08 | 2018-08-10 | 中国石油天然气集团公司 | self-lubricating transmission device |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| AV01 | Patent right actively abandoned |
Granted publication date: 20150204 Effective date of abandoning: 20160622 |
|
| C25 | Abandonment of patent right or utility model to avoid double patenting |