CN204941376U - A kind of small size helicoid hydraulic motor spherical hinge type universal drive shaft - Google Patents
A kind of small size helicoid hydraulic motor spherical hinge type universal drive shaft Download PDFInfo
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- CN204941376U CN204941376U CN201520581036.3U CN201520581036U CN204941376U CN 204941376 U CN204941376 U CN 204941376U CN 201520581036 U CN201520581036 U CN 201520581036U CN 204941376 U CN204941376 U CN 204941376U
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Abstract
The utility model discloses a kind of small size helicoid hydraulic motor spherical hinge type universal drive shaft, comprise connecting rod, the two ends of described connecting rod connect live hinge and lower hinge of living respectively, connecting rod and on live cut with scissors between, connecting rod and lower work are provided with ball seat and multiple transmission steel ball between cutting with scissors, these transmission steel balls are installed in small end outer wall and upper living is cut with scissors between inwall, and connecting rod lower end outer wall and lower live cut with scissors between inwall, the two ends of described connecting rod are outer convex spherical, the outer convex spherical occlusion at described connecting rod two ends is arranged in the indent ball-and-socket face of corresponding ball seat, the upper end of described connecting rod is by upper sealing device and upper hinge seal arrangement of living, lower end is by lower sealing device and lower hinge seal arrangement of living.The utility model spherical hinge type universal drive shaft uniform force is reasonable, simple and compact for structure, even if kinematic pair structure and sealing device structure make universal drive shaft radial dimension when less, also rotating speed and moment of torsion can be transmitted reliably, reposefully, improve the supporting capacity of universal drive shaft, be applicable to small size helicoid hydraulic motor.
Description
Technical field
The utility model relate to a kind of be applicable to oil, gas drilling field helicoid hydraulic motor configuration use spherical hinge type universal drive shaft, particularly a kind of small size helicoid hydraulic motor spherical hinge type universal drive shaft.
Background technology
Helicoid hydraulic motor is a kind of positive displacement mud motor, has been applied widely since nearly 30 years in oil, gas drilling and well workover field.It is made up of four parts such as by-pass valve assembly, motor assembly, universal drive shaft assembly and driving-shaft assemblies, and wherein universal drive shaft assembly upper end is connected with motor rotor, and lower end is connected with power transmission shaft.In drilling engineering, one of problem of restriction helicoid hydraulic motor application is exactly the application life of helicoid hydraulic motor, and wherein the application life of universal drive shaft is a key factor.Because revolution part existing in the planetary motion of rotor has again autobiography part, the planetary motion of rotor need be converted into the dead axle motion of power transmission shaft by universal drive shaft, thus the moment of torsion produced by motor and rotating speed reliably, reposefully pass to drill bit.In the process of translational movement, transmitting torque and rotating speed, universal drive shaft force-bearing situation is complicated, bears fluctuating load, however due to radial space limited, structure and the volume of universal drive shaft are all restricted, and universal drive shaft just becomes the critical component affecting helicoid hydraulic motor application life.
The typical structure of current helicoid hydraulic motor spherical hinge type universal drive shaft, as shown in Figure 1, its structure is: above live hinge 22, ball seat 23, upper locknut 24, split ring 25, sealing shroud 26, larynx hoop 27, connecting rod 28, lower locknut 29, transmission steel ball 30, pressure-bearing steel ball 31, lower hinge 32 alive and plug 33.Pressure-bearing steel ball 31 device, in the ball-and-socket face of ball seat 23 and connecting rod 28, makes connecting rod 28 can swing around pressure-bearing steel ball 31, bears axial force by pressure-bearing steel ball 31 simultaneously.4 ~ 8 transmission steel balls 30 are installed in the ball-and-socket on the outer round surface of connecting rod 28 end respectively and upper hinge alive 22, in arc groove on lower hinge 32 inwall alive, this structure not only allows connecting rod 28 can swing around pressure-bearing steel ball 31, and the steel ball of transmission simultaneously 30 achieves the transmission of moment of torsion and rotating speed.The large end of sealing shroud 26 is fastenedly connected in upper hinge 22 alive or lower hinge alive 32 interior volume by split ring 25 and upper locknut 24 or lower locknut 29, and small end is clamped on connecting rod 28 by larynx hoop 27.The shortcoming of typical case's spherical hinge type universal drive shaft is: 1, pressure-bearing steel ball 31 is positioned at the ball-and-socket face of connecting rod 28 end, the circumference of connecting rod 28 end is distributed with the ball-and-socket face of 4 ~ 8 device transmission steel balls 30 simultaneously, for ensureing the requirement of strength of connecting rod 28, radial clearance requirement when connecting rod 28 swings and between ball seat 23, the diameter dimension of pressure-bearing steel ball 31 has a definite limitation (contact surface is little and then limit the axial force supporting capacity of universal drive shaft), in small size helicoid hydraulic motor, the diameter dimension restriction of pressure-bearing steel ball 31 is more obvious, therefore the structure being provided with pressure-bearing steel ball 31 and connecting rod 28 inside can reduce the axial force supporting capacity of small size articulated joint for screw drilling rod, 2, the large end of sealing shroud 26 is fastenedly connected interior volume in upper hinge 22 alive or lower hinge alive 32 by split ring 25 and upper locknut 24 or lower locknut 29, and small size helicoid hydraulic motor radial space is little, upper hinge alive 22, lower hinge 32 alive do not have enough inner spaces to hold other part, and the sealing means that sealing shroud 26 is held greatly is not suitable for small size helicoid hydraulic motor.
Utility model content
Technical problem to be solved in the utility model is that the deficiency existed for above-mentioned prior art provides a kind of small size helicoid hydraulic motor spherical hinge type universal drive shaft, this universal shaft structure is simply compact, uniform force is reasonable, rotating speed and moment of torsion can be transmitted reliably, reposefully, improve the supporting capacity of universal drive shaft.
The technical scheme that the utility model adopts is: a kind of small size helicoid hydraulic motor spherical hinge type universal drive shaft, comprise connecting rod, the two ends of described connecting rod connect live hinge and lower hinge of living respectively, connecting rod and on live cut with scissors between, connecting rod and lower work are provided with ball seat and multiple transmission steel ball between cutting with scissors, these transmission steel balls are installed in small end outer wall and upper living is cut with scissors between inwall, and connecting rod lower end outer wall and lower live cut with scissors between inwall, it is characterized in that: the two ends of described connecting rod are outer convex spherical, the outer convex spherical occlusion at described connecting rod two ends is arranged in the indent ball-and-socket face of corresponding ball seat, the upper end of described connecting rod is by upper sealing device and upper hinge seal arrangement of living, lower end is by lower sealing device and lower hinge seal arrangement of living, the sliding agent of balance external and internal pressure is all filled with in two sealing devices.
By technique scheme, described upper sealing device comprises and the upper upper locknut, and the upper sleeve gasket that is tightly connected of upper locknut that cut with scissorss and be tightly connected of living, and described upper sleeve gasket is contained on connecting rod by circlip sealed clamping cleat; Described lower sealing device comprises and the lower lower locknut, and the lower sleeve gasket that is tightly connected of lower locknut that cut with scissorss and be tightly connected of living, and described lower sleeve gasket is contained on connecting rod by circlip sealed clamping cleat.
By technique scheme, upper locknut is provided with boss, the corresponding groove being provided with matching form and closing in upper sleeve gasket, the boss of upper locknut is embedded in the groove of upper sleeve gasket, and upper sleeve gasket is contained on upper locknut by circlip sealed clamping cleat; Lower locknut is provided with boss, and the corresponding groove being provided with matching form and closing in lower sleeve gasket, the boss of lower locknut is embedded in the groove of lower sleeve gasket, and lower sleeve gasket is contained on lower locknut by circlip sealed clamping cleat.
By technique scheme, described upper sleeve gasket is provided with large end and small end, and the large end sealed clamping cleat of upper sleeve gasket is contained on locknut, small end sealed clamping cleat is contained on connecting rod, described lower sleeve gasket is provided with large end and small end, and the large end sealed clamping cleat of lower sleeve gasket is contained on lower locknut, and small end sealed clamping cleat is contained on connecting rod.
By technique scheme, upper locknut and upper hinge alive are threaded connection, and lower locknut and lower hinge alive are threaded connection, and both thread rotary orientations are contrary.
By technique scheme, the transmission steel ball being positioned at small end is installed in the ball-and-socket of small end outer wall and upper hinge inwall opening arc groove of living, and the transmission steel ball being positioned at connecting rod lower end is installed in the ball-and-socket of connecting rod lower end outer wall and the opening arc groove of lower hinge inwall of living.
By technique scheme, in upper hinge of living, be provided with upper end sliding agent circulation passage be communicated with upper sealing device, lower end sliding agent circulation passage is set in lower hinge of living and is communicated with lower sealing device.
By technique scheme, described upper end sliding agent circulation passage is included in equally distributed multiple first axial oilhole, many first axial oil grooves that small end ball seat is arranged and the first annular oil groove in hinge of living, and the first axial oilhole is communicated with by the first annular oil groove with the first axial oil groove; Described lower end sliding agent circulation passage is included in equally distributed multiple second axial oilhole, many second axial oil grooves that connecting rod lower end ball seat is arranged and the second annular oil groove in lower hinge of living, and the second axial oilhole is communicated with by the second annular oil groove with the second axial oil groove.
The invention has the beneficial effects as follows: 1, the outer convex spherical of connecting rod directly coordinates with ball seat, spherical diameter is comparatively large, and contact surface is large, stress is little, simple and compact for structure, improve the supporting capacity of universal drive shaft and transmit the stationarity of rotating speed, moment of torsion, being applicable to small size helicoid hydraulic motor; 2, sealing shroud curved surface line style advantages of simple, be easy to processing, the fastening means of sealing shroud is simple and reliable, reduces cost.
Accompanying drawing explanation
Fig. 1 is the structural representation of existing typical ball-and-socket hinge style universal drive shaft.
Fig. 2 is structural representation of the present utility model.
Detailed description of the invention
Below in conjunction with accompanying drawing, the utility model is described in further detail.
As shown in Figure 2, present embodiments provide a kind of small size helicoid hydraulic motor spherical hinge type universal drive shaft, it comprises hinge 1 alive, lower hinge 15 alive, connecting rod 7, ball seat 2, transmission steel ball 13, upper sealing device and lower sealing device; In the blind hole of upper hinge 1 alive, lower hinge 15 alive, be installed on the ball seat 2 in band indent ball-and-socket face respectively, connecting rod 7 two ends head is outer convex spherical, and the outer convex spherical at its two ends is all engaged in the indent ball-and-socket face of corresponding ball seat 2, to bear axial force; Between connecting rod 7 two ends and upper hinge alive 1, lower hinge 15 alive, device has 4 ~ 8 transmission steel balls 13 respectively, to transmit rotating speed and moment of torsion, in they are installed on and are evenly distributed on the outer round surface of connecting rod 7 end ball-and-socket and be evenly distributed in opening arc groove that hinge 1 alive, lower hinge 15 inwall alive adapt with transmission steel ball 13 diameter; The upper end of described connecting rod 7 is by upper sealing device and upper hinge alive 1 seal arrangement, lower end is by lower sealing device and lower hinge alive 15 seal arrangement, in upper hinge 1 alive with ball seat 2, be provided with upper end sliding agent circulation passage be communicated with upper sealing device, in lower hinge 15 alive with ball seat 2, be provided with lower end sliding agent circulation passage be communicated with lower sealing device.Lower hinge 15 alive is evenly distributed with the pod apertures that 3 inclination angles are 55 ° ~ 70 °, is communicated with space outerpace and the inner space of universal drive shaft lower end.
In the present embodiment, upper sealing device comprises the upper locknut 3 be threaded with upper hinge 1 alive, the upper sleeve gasket 5 be tightly connected with upper locknut 3.Wherein, upper sleeve gasket 5 is provided with large end and small end, and its small end and large end are exposed in drilling fluid completely.Be provided with arc cam in the lower end of upper locknut 3, be provided with the groove of matching form in upper sleeve gasket 5, upper sleeve gasket 5 coordinates swelling on upper locknut 3 by groove and boss.The large end of upper sleeve gasket 5 is clamped on upper locknut 3 by O RunddichtringO 10 and circlip 4, and its small end is clamped on connecting rod 7 by O RunddichtringO 6 and circlip 8.Lower sealing device is identical with the structure of upper sealing device, and it comprises the lower locknut 12 be threaded with lower hinge 15 alive, the lower sleeve gasket 9 be tightly connected with lower locknut 12.Lower sleeve gasket 9 is provided with large end and small end, and its small end and large end are exposed in drilling fluid completely.Be provided with arc cam in the upper end of lower locknut 12, be provided with the groove of matching form in lower sleeve gasket 9, lower sleeve gasket 9 coordinates swelling on lower locknut 12 by groove and boss.The large end of lower sleeve gasket 9 is clamped on lower locknut 12 by O RunddichtringO 10 and circlip 4, and its small end is clamped on connecting rod 7 by O RunddichtringO 6 and circlip 8.Wherein, upper locknut 3, lower locknut 12 are connected with upper hinge 1 alive, lower hinge 15 alive respectively by dextrorotation, left hand thread, and the thread root of 2 locknuts is provided with O RunddichtringO 11, seals up screw thread.
In the present embodiment, described upper end sliding agent circulation passage is included in equally distributed 2 the first axial oilholes 19 in hinge 1 alive, on connecting rod 7 upper end ball seat 2, equally distributed 2 the first axial oil grooves 20 and the axial oilhole 19 of the first annular oil groove 21, first are communicated with by the first annular oil groove 21 with the first axial oil groove 20; Described lower end sliding agent circulation passage is included in equally distributed 2 the second axial oilholes 16 in lower hinge alive 15, on connecting rod 7 lower end ball seat 2, equally distributed 2 the second axial oil grooves 17 and the axial oilhole 16 of the second annular oil groove 18, second are communicated with by the second annular oil groove 18 with the second axial oil groove 17.Wherein, the axial oilhole 16 of the first axial oilhole 19, second all carries out shutoff by plug 14.
The utility model transmits rotating speed and moment of torsion reposefully by equally distributed transmission steel ball 13, thus the planetary motion of motor rotor is converted into the fixed-axis rotation of power transmission shaft while the centre of sphere of connecting rod 7 convex spherical outside its end can be made to swing.
Claims (8)
1. a small size helicoid hydraulic motor spherical hinge type universal drive shaft, comprise connecting rod, the two ends of described connecting rod connect live hinge and lower hinge of living respectively, connecting rod and on live cut with scissors between, connecting rod and lower work are provided with ball seat and multiple transmission steel ball between cutting with scissors, these transmission steel balls are installed in small end outer wall and upper living is cut with scissors between inwall, and connecting rod lower end outer wall and lower live cut with scissors between inwall, it is characterized in that: the two ends of described connecting rod are outer convex spherical, the outer convex spherical occlusion at described connecting rod two ends is arranged in the indent ball-and-socket face of corresponding ball seat, the upper end of described connecting rod is by upper sealing device and upper hinge seal arrangement of living, lower end is by lower sealing device and lower hinge seal arrangement of living, the sliding agent of balance external and internal pressure is all filled with in two sealing devices.
2. a kind of small size helicoid hydraulic motor spherical hinge type universal drive shaft according to claim 1, it is characterized in that, described upper sealing device comprises and the upper upper locknut, and the upper sleeve gasket that is tightly connected of upper locknut that cut with scissorss and be tightly connected of living, and described upper sleeve gasket is contained on connecting rod by circlip sealed clamping cleat; Described lower sealing device comprises and the lower lower locknut, and the lower sleeve gasket that is tightly connected of lower locknut that cut with scissorss and be tightly connected of living, and described lower sleeve gasket is contained on connecting rod by circlip sealed clamping cleat.
3. a kind of small size helicoid hydraulic motor spherical hinge type universal drive shaft according to claim 2, it is characterized in that, upper locknut is provided with boss, the corresponding groove being provided with matching form and closing in upper sleeve gasket, the boss of upper locknut is embedded in the groove of upper sleeve gasket, and upper sleeve gasket is installed on upper locknut by circlip; Lower locknut is provided with boss, and the corresponding groove being provided with matching form and closing in lower sleeve gasket, the boss of lower locknut is embedded in the groove of lower sleeve gasket, and lower sleeve gasket is contained on lower locknut by circlip sealed clamping cleat.
4. a kind of small size helicoid hydraulic motor spherical hinge type universal drive shaft according to claim 3, it is characterized in that, described upper sleeve gasket is provided with large end and small end, the large end sealed clamping cleat of upper sleeve gasket is contained on locknut, small end sealed clamping cleat is contained on connecting rod, described lower sleeve gasket is provided with large end and small end, and the large end sealed clamping cleat of lower sleeve gasket is contained on lower locknut, and small end sealed clamping cleat is contained on connecting rod.
5. a kind of small size helicoid hydraulic motor spherical hinge type universal drive shaft according to Claims 2 or 3, it is characterized in that, upper locknut and upper hinge alive are threaded connection, and lower locknut and lower hinge alive are threaded connection, and both thread rotary orientations are contrary.
6. a kind of small size helicoid hydraulic motor spherical hinge type universal drive shaft according to claim 1 and 2, it is characterized in that, the transmission steel ball being positioned at small end is installed in the ball-and-socket of small end outer wall and upper hinge inwall opening arc groove of living, and the transmission steel ball being positioned at connecting rod lower end is installed in the ball-and-socket of connecting rod lower end outer wall and the opening arc groove of lower hinge inwall of living.
7. a kind of small size helicoid hydraulic motor spherical hinge type universal drive shaft according to claim 1 and 2, it is characterized in that, in upper hinge of living, be provided with upper end sliding agent circulation passage be communicated with upper sealing device, lower end sliding agent circulation passage be set in lower hinge of living and be communicated with lower sealing device.
8. a kind of small size helicoid hydraulic motor spherical hinge type universal drive shaft according to claim 7, it is characterized in that, described upper end sliding agent circulation passage is included in equally distributed multiple first axial oilhole, many first axial oil grooves that small end ball seat is arranged and the first annular oil groove in hinge of living, and the first axial oilhole is communicated with by the first annular oil groove with the first axial oil groove; Described lower end sliding agent circulation passage is included in equally distributed multiple second axial oilhole, many second axial oil grooves that connecting rod lower end ball seat is arranged and the second annular oil groove in lower hinge of living, and the second axial oilhole is communicated with by the second annular oil groove with the second axial oil groove.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520581036.3U CN204941376U (en) | 2015-08-05 | 2015-08-05 | A kind of small size helicoid hydraulic motor spherical hinge type universal drive shaft |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520581036.3U CN204941376U (en) | 2015-08-05 | 2015-08-05 | A kind of small size helicoid hydraulic motor spherical hinge type universal drive shaft |
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| Publication Number | Publication Date |
|---|---|
| CN204941376U true CN204941376U (en) | 2016-01-06 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201520581036.3U Active CN204941376U (en) | 2015-08-05 | 2015-08-05 | A kind of small size helicoid hydraulic motor spherical hinge type universal drive shaft |
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| Country | Link |
|---|---|
| CN (1) | CN204941376U (en) |
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2015
- 2015-08-05 CN CN201520581036.3U patent/CN204941376U/en active Active
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| Date | Code | Title | Description |
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| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C56 | Change in the name or address of the patentee | ||
| CP01 | Change in the name or title of a patent holder |
Address after: 430223 Hubei city of Wuhan province science and Technology Park East Lake New Technology Development Zone, Road No. five Patentee after: SINOPEC OILFIELD EQUIPMENT CORPORATION Address before: 430223 Hubei city of Wuhan province science and Technology Park East Lake New Technology Development Zone, Road No. five Patentee before: Jianghan Petroleum Drilling Bit Co., Ltd. |
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| TR01 | Transfer of patent right | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20180327 Address after: 430223, No. 5, Chinese workers' garden, Temple Hill community, East Lake New Technology Development Zone, Wuhan, Hubei Co-patentee after: SINOPEC OILFIELD EQUIPMENT CORPORATION Patentee after: Kingdream Sinopec Petroleum Machinery Co. Ltd. Address before: 430223 Hubei city of Wuhan province science and Technology Park East Lake New Technology Development Zone, Road No. five Patentee before: SINOPEC OILFIELD EQUIPMENT CORPORATION |