CN204082946U - A kind of coupling of downhole instrument - Google Patents
A kind of coupling of downhole instrument Download PDFInfo
- Publication number
- CN204082946U CN204082946U CN201420605020.7U CN201420605020U CN204082946U CN 204082946 U CN204082946 U CN 204082946U CN 201420605020 U CN201420605020 U CN 201420605020U CN 204082946 U CN204082946 U CN 204082946U
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- hole
- coupling
- single plane
- drive motor
- radial rectangular
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Abstract
The utility model discloses a kind of coupling of downhole instrument.The shape of described coupling (1) is cylindrical body, coupling one end is provided with the hole, axial single plane (2) be connected with drive motor (5) output shaft, the coupling the other end is provided with positioning hole (3), between positioning hole with hole, axial single plane, be provided with the radial rectangular through-hole (4) be connected with power unit (10) input shaft, radial rectangular through-hole communicates with positioning hole.The utility model only needs a part, decreases part, simplifies assembly, has saved cost.In part course of working, eliminate electric discharge machining, improve production technology, greatly reduce cost of production, turn improve the quality of processing of part simultaneously.Well solve the deficiencies in the prior art.
Description
Technical field
the utility model relates to a kind of coupling of downhole instrument, belongs to the interconnection technique field of motor-driven in downhole instrument.
Background technique
along with oil instrument is constantly to highly integrated, high reliability, high ageing future development.It is more and more comprehensive that the developing direction of oil instrument has been doomed the function of instrument, the action completed in down-hole gets more and more, the driving mechanism of instrument belongs to the most important thing in current Instrument Design, transmission is had just to be unable to do without drive motor, drive motor is the executive component of autocontrol switch, and from drive motor, power being delivered to power unit must be connected by coupling.Coupling is a common mechanical part in universal machine field, but at oil instrument field, because downhole instrument mostly is thin rod shape, by the restriction of structure space, to the shape of each parts, volume and weight has strict demand, particularly more harsh to the requirement of coupling, belongs to a special mechanical part.
existing coupling is made up of body, axle sleeve and flat key three parts, body is provided with the square blind hole be connected with power unit, because this square blind hole size is less, conventional machining means cannot be processed, and can only adopt electric discharge machining, and electric discharge machining luminosity is poor, because the loss of electrode during processing blind hole, port size is difficult to control, and the size at the bottom of hole is not easy to reach designing requirement, is the difficult point of body processing.
Model utility content
the purpose of this utility model is, a kind of coupling of downhole instrument is provided, changes three of existing coupling parts into a part, eliminate the square blind hole in existing body part simultaneously, can process without electrical spark, to reduce cost of production and to improve quality of processing.
the technical solution of the utility model:
a kind of coupling of downhole instrument, the shape of described coupling is cylindrical body, coupling one end is provided with the hole, axial single plane be connected with drive motor output shaft, the coupling the other end is provided with positioning hole, between positioning hole with hole, axial single plane, be provided with the radial rectangular through-hole be connected with power unit input shaft, radial rectangular through-hole communicates with positioning hole.
in aforementioned coupling, hole, described axial single plane coordinates with drive motor output shaft clearance.
in aforementioned coupling, the top and bottom sidewall of described radial rectangular through-hole and the rectangle input shaft Spielpassung of power unit.
in aforementioned coupling, described positioning hole is the circular hole that the degree of depth is greater than 5mm, is connected with the positioning step of power unit end face.
in aforementioned coupling, described hole, axial single plane and positioning hole coaxial with coupling.
in aforementioned coupling, hole, described axial single plane is greater than the length of drive motor output shaft along the size of coupling axial direction.
in aforementioned coupling, the orthogonal cross-sectional shape in hole, described axial single plane is the sealing surface be made up of one section of camber line and one section of straight line, sectional dimension and drive motor output shaft supporting.
in aforementioned coupling, the axes normal of described radial rectangular through-hole and coupling, the center line of radial rectangular through-hole and the axes intersect of coupling.
in aforementioned coupling, described radial rectangular through-hole is greater than the length of power unit input shaft along the size of coupling axial direction.
in aforementioned coupling, described coupling is Steel Work.
compared with prior art, coupling of the present utility model changes the shape corresponding with drive motor output shaft into by with the hole that drive motor connects, existing flat key and axle sleeve two parts can be cancelled, prior art forms coupling by three parts, the utility model only needs a part, decrease part, simplify assembly, save cost.Coupling of the present utility model improves the square blind hole on body in prior art, the square blind hole of prior art is instead of by radial rectangular through-hole, in part course of working, eliminate electric discharge machining, improve production technology, greatly reduce cost of production, turn improve the quality of processing of part simultaneously.Well solve the deficiencies in the prior art.
Accompanying drawing explanation
fig. 1 is structural representation of the present utility model;
fig. 2 is the right elevation of Fig. 1;
fig. 3 is the left view of Fig. 1;
fig. 4 is the plan view of Fig. 1;
fig. 5 is the axonometric drawing of Fig. 1;
fig. 6 is the application schematic diagram of existing coupling;
fig. 7 is the application schematic diagram of the utility model coupling.
being labeled as in accompanying drawing: 1-coupling, the axial hole, single plane of 2-, 3-positioning hole, the radial rectangular through-hole of 4-, 5-drive motor, 6-coupling body, 7-axle sleeve, 8-flat key, the square blind hole of 9-, 10-power unit.
Embodiment
below in conjunction with drawings and Examples, the utility model is described in further detail, but not as to any restriction of the present utility model.
Embodiment
a kind of coupling of downhole instrument, as shown in Fig. 1 ~ 5, the shape of described coupling 1 is steel cylinder, coupling 1 one end is provided with the hole, axial single plane 2 be connected with drive motor 5 output shaft, the orthogonal cross-sectional shape in axial hole, single plane 2 is the sealing surfaces be made up of one section of camber line and one section of straight line, sectional dimension and drive motor output shaft supporting.Axial hole, single plane 2 coordinates with drive motor 5 output shaft clearance.Axial hole, single plane 2 is greater than the length of drive motor output shaft along the size of coupling 1 axial direction.Coupling 1 the other end is provided with positioning hole 3, and positioning hole 3 is greater than the circular hole of 5mm for the degree of depth, is connected with the positioning step of power unit 10 end face.Axial hole, single plane 2 and positioning hole 3 coaxial with coupling 1.The radial rectangular through-hole 4 be connected with power unit 10 input shaft is provided with, axes normal, the center line of radial rectangular through-hole 4 and the axes intersect of coupling 1 of radial rectangular through-hole 4 and coupling 1 between positioning hole 3 with hole, axial single plane 2.Radial rectangular through-hole 4 communicates with positioning hole 3.The radial top and bottom sidewall of rectangular through-hole 4 and the rectangle input shaft Spielpassung of power unit 10.Radial rectangular through-hole 4 is greater than the length of power unit input shaft along the size of coupling 1 axial direction.
specifically add man-hour, Milling Machining or linear cutter can be adopted to process from coupling 1 side, processing is got up than being easier to, and also can well ensure quality of processing.After processing radial rectangular through-hole 4, can machining shaft to hole, single plane 2 and positioning hole 3, hole, axial single plane 2 also can adopt linear cutter, and precision also easily ensures.Positioning hole 3 can mill out the hole that bottom surface is plane by direct milling cutter.
fig. 6 is the application schematic diagram of coupling in downhole instrument of prior art, and as seen from the figure, the coupler structure of prior art is more complicated, is made up of axle sleeve 7, flat key 8 and coupling body 6 three parts, has a square blind hole 9 in structure.This square blind hole 9 size is less, and the processing mode of electrical spark can only be used to process, and electric discharge machining cost is higher, and processing luminosity is poor, adds man-hour because the loss of electrode, and port size is difficult to ensure, the size at the bottom of hole is also difficult to reach designing requirement.
fig. 7 is the application schematic diagram of the utility model coupling, and as seen from the figure, amended coupling only has a part, decreases part, simplifies assembly, has saved cost.And eliminate square blindness hole, in part course of working, eliminate electric discharge machining, improve production technology, greatly reduce cost of production, turn improve the quality of processing of part simultaneously.Well solve the deficiencies in the prior art.
Claims (10)
1. the coupling of a downhole instrument, it is characterized in that: the shape of described coupling (1) is cylindrical body, coupling (1) one end is provided with the hole, axial single plane (2) be connected with drive motor (5) output shaft, coupling (1) the other end is provided with positioning hole (3), between positioning hole (3) with hole, axial single plane (2), be provided with the radial rectangular through-hole (4) be connected with power unit (10) input shaft, radial rectangular through-hole (4) communicates with positioning hole (3).
2. coupling according to claim 1, is characterized in that: hole, described axial single plane (2) coordinates with drive motor (5) output shaft clearance.
3. coupling according to claim 1, is characterized in that: the top and bottom sidewall of described radial rectangular through-hole (4) and the rectangle input shaft Spielpassung of power unit (10).
4. coupling according to claim 1, is characterized in that: described positioning hole (3) is greater than the circular hole of 5mm for the degree of depth, is connected with the positioning step of power unit (10) end face.
5. coupling according to claim 1, is characterized in that: hole, described axial single plane (2) and positioning hole (3) coaxial with coupling (1).
6. coupling according to claim 1, is characterized in that: hole, described axial single plane (2) is greater than the length of drive motor output shaft along the size of coupling (1) axial direction.
7. coupling according to claim 1, is characterized in that: the orthogonal cross-sectional shape of hole, described axial single plane (2) is the sealing surface be made up of one section of camber line and one section of straight line, sectional dimension and drive motor output shaft supporting.
8. coupling according to claim 1, is characterized in that: axes normal, the center line of radial rectangular through-hole (4) and the axes intersect of coupling (1) of described radial rectangular through-hole (4) and coupling (1).
9. coupling according to claim 8, is characterized in that: described radial rectangular through-hole (4) is greater than the length of power unit input shaft along the size of coupling (1) axial direction.
10. coupling according to claim 1, is characterized in that: described coupling (1) is Steel Work.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420605020.7U CN204082946U (en) | 2014-10-20 | 2014-10-20 | A kind of coupling of downhole instrument |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420605020.7U CN204082946U (en) | 2014-10-20 | 2014-10-20 | A kind of coupling of downhole instrument |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN204082946U true CN204082946U (en) | 2015-01-07 |
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ID=52175669
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420605020.7U Active CN204082946U (en) | 2014-10-20 | 2014-10-20 | A kind of coupling of downhole instrument |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN204082946U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106438732A (en) * | 2016-12-10 | 2017-02-22 | 无锡银联齿轮传动机械有限公司 | Square- and round-pipe coupler for handle pipe pre-plating washing machine |
-
2014
- 2014-10-20 CN CN201420605020.7U patent/CN204082946U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106438732A (en) * | 2016-12-10 | 2017-02-22 | 无锡银联齿轮传动机械有限公司 | Square- and round-pipe coupler for handle pipe pre-plating washing machine |
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| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant |