CN204571830U - Goalpost location universal drive shaft - Google Patents
Goalpost location universal drive shaft Download PDFInfo
- Publication number
- CN204571830U CN204571830U CN201520247144.7U CN201520247144U CN204571830U CN 204571830 U CN204571830 U CN 204571830U CN 201520247144 U CN201520247144 U CN 201520247144U CN 204571830 U CN204571830 U CN 204571830U
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- goalpost
- bulb
- connecting rod
- hole
- strand
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Abstract
The utility model relates to oil drilling helicoid hydraulic motor technical field, especially relates to a kind of goalpost location universal drive shaft.Be characterized in comprising connecting rod, within bottom described connecting rod one week, be provided with multiple hemispherical dimples, connecting rod bottom is arranged on lives in strand, strand inwall alive and hemispherical dimples form goalpost hole, goalpost is provided with goalpost in hole, and connecting rod bottom centre is provided with bulb hole, and bulb is provided with bulb in hole, below bulb, correspondence is provided with ball seat, and ball seat is arranged on strand upper end of living.The setting of its hemispherical dimples, twists inwall with work and forms goalpost hole, make goalpost be fixed in goalpost hole, can not produce relative to rotation or move, can not affect the swing ability of connecting rod; Bulb embeds in bulb hole, secures the position of ball, solves the problem of ball landing, solved by bulb and ball seat and bear axial force ground problem, ensure that activity point of view and the flexibility ratio of universal drive shaft, and increase contact surface and increase the service life, enhance the axial bearing capacity of connecting rod.
Description
Technical field
The utility model relates to oil drilling helicoid hydraulic motor technical field, especially relates to a kind of goalpost location universal drive shaft.
Background technology
Helicoid hydraulic motor is a kind of is power with drilling fluid, fluid pressure can be transferred to the positive displacement mud motor of mechanical energy, primarily of the large assembly composition of bypass valve, fluid motor, universal drive shaft and power transmission shaft etc. four.Wherein, the effect of universal drive shaft is the fixed-axis rotation planetary motion of motor being changed into power transmission shaft, and the moment of torsion produce motor and rotating speed pass to power transmission shaft to drill bit.Therefore, universal drive shaft needs high hardness, abrasion resistance and application life., at present, the universal drive shaft on market, takes off post and can slide, and lower end ball easily drops out, and causes universal drive shaft activity point of view little, very flexible; Ball seat and bulb contact area little, connecting rod wall is thin, and intensity is low, bears axial compression ability, fragile.
Summary of the invention
The purpose of this utility model is to avoid the deficiencies in the prior art to provide a kind of goalpost to locate universal drive shaft, thus effectively solves the defect existed in prior art.
For achieving the above object, the technical scheme that the utility model is taked is: described goalpost location universal drive shaft, be characterized in comprising connecting rod, within bottom described connecting rod one week, be provided with multiple hemispherical dimples, connecting rod bottom is arranged on lives in strand, strand inwall alive and hemispherical dimples form goalpost hole, goalpost is provided with goalpost in hole, and connecting rod bottom centre is provided with bulb hole, and bulb is provided with bulb in hole, below bulb, correspondence is provided with ball seat, and ball seat is arranged on strand upper end of living.
Connecting rod periphery above described hemispherical dimples is also provided with sheath, is provided with trim ring inside sheath, and sheath arranged outside has lock sleeve, and connecting rod is by sheath, and lock sleeve and trim ring embed lives in strand.
Described bulb and bulb hole tight fit connection.
Described ball seat is arranged on the interior center of strand upper end of living.
The beneficial effects of the utility model are: described goalpost location universal drive shaft, and the setting of its hemispherical dimples, twists inwall with work and form goalpost hole, make goalpost be fixed in goalpost hole, can not produce relative to rotation or move, can not affect the swing ability of connecting rod; Bulb embeds in bulb hole, secures the position of ball, solves the problem of ball landing, solved by bulb and ball seat and bear axial force ground problem, ensure that activity point of view and the flexibility ratio of universal drive shaft, and increase contact surface and increase the service life, enhance the axial bearing capacity of connecting rod.
Accompanying drawing explanation
Below in conjunction with drawings and Examples, the utility model is further illustrated.
Fig. 1 is the utility model structural principle schematic diagram.
Shown in figure: 1. connecting rod, 2. hemispherical dimples, strand of 3. living, 4. goalpost hole, 5. goalpost, 6. bulb hole, 7. bulb, 8. ball seat.9. sheath, 10. lock sleeve, 11. trim rings.
Detailed description of the invention
Be described principle of the present utility model and feature below in conjunction with accompanying drawing, example, only for explaining the utility model, is not intended to limit scope of the present utility model.
As shown in Figure 1, described goalpost location universal drive shaft, be characterized in comprising connecting rod 1, within bottom described connecting rod 1 one week, be provided with multiple hemispherical dimples 2, connecting rod 1 bottom is arranged in strand 3 alive, strand 3 inwall alive and hemispherical dimples 2 form goalpost hole 4, be provided with goalpost 5 in goalpost hole 4, connecting rod 1 bottom centre is provided with bulb hole 6, is provided with bulb 7 in bulb hole 6, below bulb 7, correspondence is provided with ball seat 8, and ball seat 8 is arranged on strand 3 upper end alive.
Further, connecting rod 1 periphery above described hemispherical dimples 2 is also provided with sheath 9, is provided with trim ring 11 inside sheath 9, and sheath 9 arranged outside has lock sleeve 10, and connecting rod 1 is by sheath 9, and lock sleeve 10 and trim ring 11 embed lives in strand 3.
Further, described bulb 7 and bulb hole 6 tight fit connection.
Further, described ball seat 8 is arranged on the interior center of strand 3 upper end alive.
The foregoing is only preferred embodiment of the present utility model, not in order to limit the utility model, all within spirit of the present utility model and principle, any amendment done, equivalent replacement, improvement etc., all should be included within protection domain of the present utility model.
Claims (4)
1. a goalpost location universal drive shaft, it is characterized in that comprising connecting rod, within bottom described connecting rod one week, be provided with multiple hemispherical dimples, connecting rod bottom is arranged on lives in strand, and strand inwall alive and hemispherical dimples form goalpost hole, and goalpost is provided with goalpost in hole, connecting rod bottom centre is provided with bulb hole, bulb is provided with bulb in hole, and below bulb, correspondence is provided with ball seat, and ball seat is arranged on strand upper end of living.
2. goalpost location as claimed in claim 1 universal drive shaft, it is characterized in that: the connecting rod periphery above described hemispherical dimples is also provided with sheath, is provided with trim ring inside sheath, and sheath arranged outside has lock sleeve, connecting rod is by sheath, and lock sleeve and trim ring embed lives in strand.
3. goalpost location as claimed in claim 1 universal drive shaft, is characterized in that: described bulb and bulb hole tight fit connection.
4. goalpost location as claimed in claim 1 universal drive shaft, is characterized in that: described ball seat is arranged on the interior center of strand upper end of living.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520247144.7U CN204571830U (en) | 2015-04-23 | 2015-04-23 | Goalpost location universal drive shaft |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520247144.7U CN204571830U (en) | 2015-04-23 | 2015-04-23 | Goalpost location universal drive shaft |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN204571830U true CN204571830U (en) | 2015-08-19 |
Family
ID=53864484
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201520247144.7U Active CN204571830U (en) | 2015-04-23 | 2015-04-23 | Goalpost location universal drive shaft |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN204571830U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106150344A (en) * | 2016-08-30 | 2016-11-23 | 天津立林石油机械有限公司 | Compensation sealing universal drive shaft |
-
2015
- 2015-04-23 CN CN201520247144.7U patent/CN204571830U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106150344A (en) * | 2016-08-30 | 2016-11-23 | 天津立林石油机械有限公司 | Compensation sealing universal drive shaft |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant |