CN205350061U - Sealed tandem type bearing for drilling tool in area - Google Patents
Sealed tandem type bearing for drilling tool in area Download PDFInfo
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- CN205350061U CN205350061U CN201620095240.9U CN201620095240U CN205350061U CN 205350061 U CN205350061 U CN 205350061U CN 201620095240 U CN201620095240 U CN 201620095240U CN 205350061 U CN205350061 U CN 205350061U
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Abstract
The utility model relates to a sealed tandem type bearing for drilling tool in area, include and meet the bearing group that constitutes in succession by a plurality of bearing element strings, be equipped with outer sleeve and inner skleeve in the bearing group, the overcoat pipe box forms the bearing group installation cavity that supplies bearing group to inlay the dress between and in the endotheca outside of tubes, be equipped with the sealing device who realizes that each bearing unit is sealed in the bearing group installation cavity, the bearing unit includes split type outer lane, integral inner circle and steel ball, split type outer lane is including the left lamella lasso monomer and the right lamella lasso monomer that all are equipped with half of outer ball channel, left side lamella lasso monomer and right lamella lasso monomer are connected integratively, the outer ball channel butt joint of corresponding twice one side of something forms outer ball channel, be equipped with on the outer periphery of integral inner circle and correspond the interior ball channel of complex with outer ball channel, outer ball channel and interior ball channel constitute the raceway of guide steel ball, the steel ball cooperates in the raceway. The utility model discloses the wholeness is good, has sealing performance, realizes grease lubrication, long service life's advantage.
Description
Technical field
This utility model relates to technical field of bearings, is specifically drilling tool concatenation type bearing.
Background technology
As the helicoid hydraulic motor in mud motor in petroleum machinery, helicoid hydraulic motor is that the hydraulic energy of a kind of drilling fluid is converted into drill bit mechanical energy and carries out brokenly the well dynamic instrument that rock creeps into, and is mainly made up of bypass valve, motor assembly, universal drive shaft assembly and driving-shaft assembly.At present, the life-span of domestic power drilling tool is generally 120～150h, and driving-shaft assembly is its weakest link.Screw drill transmission shaft assembly is mainly made up of housing, power transmission shaft, top needle bearing, bottom needle bearing, concatenation type bearing and other auxiliary components.
The concatenation type bearing of screw drill transmission shaft is position the weakest in power transmission shaft.As it is shown in figure 1, current most widely used a kind of concatenation type bearing, including multirow bearing unit, bearing unit is made up of outer ring, inner ring and steel ball 13；Outer ring and inner ring design for split, and therefore the outer ring of bearing includes single-groove outer ring 81 and Shuan Gou outer ring 82, and inner ring includes single-groove inner ring 91 and double; two ditch inner ring 92, wherein has a gap between inner ring (91 and 92) and outer ring (81 and 82), and this is the passage of mud lubrication.Additionally inner ring and outer ring corresponding to steel ball 13 separate, and are so easy to assembling.
Existing concatenation type bearing has following defects that
1, owing to concatenation type bearing is open bearing, and by mud lubrication, hard particles during mud lubrication, under the effect of down-hole alternate stress, can there is adhesive wear and abrasive wear in bearing, causes bearing premature failure；Simultaneously because mud lubrication bear bigger shock loading, cause bearing wear abnormal and the ratio of fracture remains high.
2, the Internal and external cycle of each column bearing unit separates, and should not ensure the consistent of raceway groove man-hour adding, and measure cumbersome.
Summary of the invention
For the technical problem overcoming prior art to exist, the purpose of this utility model is in that to provide a kind of reasonable in design, good integrity, has sealing property, it is achieved grease lubrication, the drilling tool of long service life concatenation type bearing.
For achieving the above object, this utility model provides following technical scheme: a kind of drilling tool concatenation type bearing with sealing, including being concatenated the bearing group connected and composed by some bearing units, it is characterized in that: described bearing group is provided with outer sleeve and inner sleeve, trocar sheath be placed on outside inner sleeve and between formed bearing group installation cavity, bearing group is inlaid in bearing group installation cavity, it is equipped with in described bearing group installation cavity and realizes the sealing device that each bearing unit seals, described bearing unit includes separated type outer ring, monoblock type inner ring and steel ball, described separated type outer ring includes left lobe lasso monomer and right lobe lasso monomer, left lobe lasso monomer and right lobe lasso monomer are equipped with the outer ball raceway groove of one side of something, left lobe lasso monomer and right lobe lasso monomer are integrally connected, the outer ball raceway groove docking of corresponding twice one side of something forms outer ball raceway groove, the outer circumference surface of monoblock type inner ring is provided with and the interior ball raceway groove of outer ball raceway groove corresponding matching, described outer ball raceway groove and interior ball raceway groove constitute the raceway guiding steel ball, described steel ball is matched with in raceway.
By adopting technique scheme, in bearing group warp, outer sleeve realizes being combined into entirety, namely inner sleeve and outer sleeve form protection and fixation, good integrity, and realize the design of sealing device, sealing device realizes each bearing unit and seals, mud is avoided to enter Bearing inner, and grease lubrication can be realized, improve sealing property, the service life of bearing, bearing unit adopts the design of monoblock type inner ring, outer ring adopts two flap-type designs, easy to assembly, in being easy to, the mill processing of outer ball raceway groove and measurement, in technique, processing is easier to control, measurement is easier to realize.
This utility model is further arranged to: all offer detent on one end outer circumference surface of described left lobe lasso monomer and the laminating of right lobe lasso monomer, and it is respectively formed on the lock projection corresponding with detent position at left lobe lasso monomer with right lobe lasso monomer, the combination of twice detent forms adapter sleeve caulking groove, be embedded with adapter sleeve in adapter sleeve caulking groove, left lobe lasso monomer and on right lobe lasso monomer lock projection through adapter sleeve interlocking one.
By adopting technique scheme, the attachment structure of lobe lasso monomer and right lobe lasso monomer is simple, easy to assembly.
This utility model is further set to: described sealing device includes the sealing ring being located at bearing unit two-port.
By adopting technique scheme, sealing device structure is simple, and each bearing unit forms independent sealing bearing, not only more reliable in sealing, and realizes module design, it is simple to assembling uses.
This utility model is further set to: described bearing unit is four-point contact ball.
By adopting technique scheme, four-point contact ball can bear radial load and axial load simultaneously, and bearing capacity is good.
This utility model is further arranged to: the outer wall of described outer sleeve be provided with that axially extend, axially through outer sleeve groove.
By adopting technique scheme, it is simple to mud flows through in the groove of outer sleeve, reaching drainage effect, on the one hand to mud drain, it is to avoid mud flows into Bearing inner, being easy to mud plays cooling effect to bearing on the other hand.
This utility model is further set to: described outer sleeve outer wall is provided with a plurality of outer sleeve groove being uniformly distributed circumferentially.
By adopting technique scheme, improve mud drainage effect further, improve cooling effect.
This utility model is further arranged to: the inner hole wall of described inner sleeve be provided with that axially extend, axially through inner sleeve groove.
The inner hole wall of described inner sleeve is provided with a plurality of inner sleeve groove being uniformly distributed circumferentially.
By adopting technique scheme, it is simple to mud flows through in the groove of inner sleeve, reaching drainage effect, on the one hand to mud drain, it is to avoid mud flows into Bearing inner, being easy to mud plays cooling effect to bearing on the other hand.
Below in conjunction with accompanying drawing, this utility model is further described.
Accompanying drawing explanation
Fig. 1 is existing drilling tool concatenation type bearing arrangement schematic diagram；
Fig. 2 is this utility model specific embodiment drilling tool concatenation type bearing arrangement schematic diagram with sealing；
Fig. 3 is this utility model specific embodiment outer sleeve structure schematic diagram；
Fig. 4 is this utility model specific embodiment inner sleeve structure schematic diagram；
Accompanying drawing 5 is part A partial enlarged view in Fig. 2.
Detailed description of the invention
Referring to accompanying drawing 2 to accompanying drawing 5, a kind of drilling tool concatenation type bearing with sealing disclosed in this utility model, including being concatenated the bearing group connected and composed by some bearing units 1, described bearing group is provided with outer sleeve 2 and inner sleeve 3, trocar sheath 2 be placed on inner sleeve 3 outer and between form bearing group installation cavity 4, bearing group is inlaid in bearing group installation cavity 4, is equipped with and realizes the sealing device that each bearing unit 1 seals in described bearing group installation cavity 4.Bearing group realizes being combined into entirety through inner and outer sleeves, namely inner sleeve and outer sleeve form protection and fixation, good integrity, being easily installed use, and realize the design of sealing device, sealing device realizes each bearing unit and seals, mud is avoided to enter Bearing inner, and grease lubrication can be realized, improve sealing property, the service life of bearing.
And, described bearing unit 1 includes separated type outer ring 11, monoblock type inner ring 12 and steel ball 13, separated type outer ring 11 described in described separated type outer ring 11 includes left lobe lasso monomer 112 and right lobe lasso monomer 113, left lobe lasso monomer 112 and right lobe lasso monomer 113 are equipped with the outer ball raceway groove of one side of something, left lobe lasso monomer 112 and right lobe lasso monomer 113 are integrally connected, the outer ball raceway groove docking of corresponding twice one side of something forms outer ball raceway groove 111, the outer circumference surface of monoblock type inner ring 12 is provided with and the interior ball raceway groove 121 of outer ball raceway groove 111 corresponding matching, described outer ball raceway groove 111 and interior ball raceway groove 121 constitute the raceway guiding steel ball 13, described steel ball 13 is matched with in raceway.Described sealing device includes the sealing ring 51 being located at bearing unit 1 two-port.Bearing unit adopts separated type outer ring to connect into overall and monoblock type inner ring design, it is easy to the mill processing of inside and outside ball raceway groove and measures, in technique, processing is easier to control, measurement is easier to realize, and can realize sealing device is the sealing ring corresponding to each bearing unit two-port, simple in construction, each bearing unit forms independent sealing bearing, not only more reliable in sealing, and realize module design, it is simple to assembling uses.Certainly as the scheme that this utility model is feasible, the outer ring of bearing unit and inner ring can adopt traditional split-type design, wherein sealing device can adopt the sealing ring set in bearing group installation cavity two-port, it is achieved is sealed by bearing group installation cavity, thus reaching the sealing to each bearing unit；May be used without setting sealing ring in the bearing unit port at both ends, the face of each bearing unit docking is for sealing laminating, seal between bearing unit and outer sleeve, inner sleeve wall and cooperatively form etc., but itself or there is structure complexity, or there is the defect of sealing reliability difference, therefore preferred structural design of the present utility model.Playing the sealing ring used in bearing unit, its concrete structure and fit structure can adopt the structure in existing sealing bearing, the known technology being well known to those skilled in the art, therefore repeat no more.For better adapting to drilling tool applying working condition, described bearing unit 1 is four-point contact ball.Four-point contact ball can bear radial load and axial load simultaneously, and bearing capacity is good.
And, one end outer circumference surface of described left lobe lasso monomer 112 and the laminating of right lobe lasso monomer 113 all offers detent 1121,1131, and it is respectively formed on the lock projection 1122,1132 corresponding with detent 1121,1131 position at left lobe lasso monomer 112 with right lobe lasso monomer 113, twice detent 1121,1131 combination forms adapter sleeve caulking groove, be embedded with adapter sleeve 114 in adapter sleeve caulking groove, left lobe lasso monomer 112 and on right lobe lasso monomer 113 lock projection 1122,1132 through adapter sleeve 114 interlocking one.The attachment structure of lobe lasso monomer and right lobe lasso monomer is simple, easy to assembly.
Owing to, under the design of outer sleeve 2 and inner sleeve 3, changing original lubricating system, for improve sealing effectiveness, the outer wall of described outer sleeve 2 be provided with that axially extend, axially through outer sleeve groove 21.And, described outer sleeve 2 outer wall is provided with a plurality of outer sleeve groove 21 being uniformly distributed circumferentially.The inner hole wall of described inner sleeve 3 be provided with that axially extend, axially through inner sleeve groove 31.And, the inner hole wall of described inner sleeve 3 is provided with a plurality of inner sleeve groove 31 being uniformly distributed circumferentially.Being easy to mud flow through in the groove of outer sleeve and inner sleeve, reach drainage effect, on the one hand to mud drain, it is to avoid mud flows into Bearing inner, being easy to mud plays cooling effect to bearing on the other hand.
Claims (8)
1. the drilling tool concatenation type bearing with sealing, including being concatenated the bearing group connected and composed by some bearing units, it is characterized in that: described bearing group is provided with outer sleeve and inner sleeve, trocar sheath be placed on outside inner sleeve and between formed bearing group installation cavity, bearing group is inlaid in bearing group installation cavity, it is equipped with in described bearing group installation cavity and realizes the sealing device that each bearing unit seals, described bearing unit includes separated type outer ring, monoblock type inner ring and steel ball, described separated type outer ring includes left lobe lasso monomer and right lobe lasso monomer, left lobe lasso monomer and right lobe lasso monomer are equipped with the outer ball raceway groove of one side of something, left lobe lasso monomer and right lobe lasso monomer are integrally connected, the outer ball raceway groove docking of corresponding twice one side of something forms outer ball raceway groove, the outer circumference surface of monoblock type inner ring is provided with and the interior ball raceway groove of outer ball raceway groove corresponding matching, described outer ball raceway groove and interior ball raceway groove constitute the raceway guiding steel ball, described steel ball is matched with in raceway.
2. according to claim 1 with seal drilling tool concatenation type bearing, it is characterized in that: one end outer circumference surface of described left lobe lasso monomer and the laminating of right lobe lasso monomer all offers detent, and it is respectively formed on the lock projection corresponding with detent position at left lobe lasso monomer with right lobe lasso monomer, the combination of twice detent forms adapter sleeve caulking groove, be embedded with adapter sleeve in adapter sleeve caulking groove, left lobe lasso monomer and on right lobe lasso monomer lock projection through adapter sleeve interlocking one.
3. the drilling tool concatenation type bearing with sealing according to claim 1 or claim 2, it is characterised in that: described sealing device includes the sealing ring being located at bearing unit two-port.
4. the drilling tool concatenation type bearing with sealing according to claim 1 or claim 2, it is characterised in that: described bearing unit is four-point contact ball.
5. according to claim 1 with seal drilling tool concatenation type bearing, it is characterised in that: the outer wall of described outer sleeve be provided with that axially extend, axially through outer sleeve groove.
6. according to claim 5 with seal drilling tool concatenation type bearing, it is characterised in that: described outer sleeve outer wall is provided with a plurality of outer sleeve groove being uniformly distributed circumferentially.
7. according to claim 1 or 5 or 6 with seal drilling tool concatenation type bearing, it is characterised in that: the inner hole wall of described inner sleeve be provided with that axially extend, axially through inner sleeve groove.
8. according to claim 3 with seal drilling tool concatenation type bearing, it is characterised in that: the inner hole wall of described inner sleeve is provided with a plurality of inner sleeve groove being uniformly distributed circumferentially.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620095240.9U CN205350061U (en) | 2016-01-29 | 2016-01-29 | Sealed tandem type bearing for drilling tool in area |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620095240.9U CN205350061U (en) | 2016-01-29 | 2016-01-29 | Sealed tandem type bearing for drilling tool in area |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN205350061U true CN205350061U (en) | 2016-06-29 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201620095240.9U Active CN205350061U (en) | 2016-01-29 | 2016-01-29 | Sealed tandem type bearing for drilling tool in area |
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| CN (1) | CN205350061U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110925298A (en) * | 2019-12-03 | 2020-03-27 | 新昌县倍顺机械有限公司 | But high strength heavy load deep groove ball bearing of quick installation |
| CN111219153A (en) * | 2020-03-01 | 2020-06-02 | 伊川县光华轴承厂 | Integrated drill rod and drilling tool slope sleeve moving system and matching method thereof |
-
2016
- 2016-01-29 CN CN201620095240.9U patent/CN205350061U/en active Active
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110925298A (en) * | 2019-12-03 | 2020-03-27 | 新昌县倍顺机械有限公司 | But high strength heavy load deep groove ball bearing of quick installation |
| CN110925298B (en) * | 2019-12-03 | 2021-07-23 | 上海芳冀轴承厂 | But high strength heavy load deep groove ball bearing of quick installation |
| CN111219153A (en) * | 2020-03-01 | 2020-06-02 | 伊川县光华轴承厂 | Integrated drill rod and drilling tool slope sleeve moving system and matching method thereof |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CP01 | Change in the name or title of a patent holder | ||
| CP01 | Change in the name or title of a patent holder |
Address after: 16 No. 325000 Yong Jiang Road, hi tech Industrial Development Zone, Zhejiang, Wenzhou, China Patentee after: C&U Co.,Ltd. Patentee after: HANGZHOU C&U MIDDLE BEARING CO.,LTD. Address before: 16 No. 325000 Yong Jiang Road, hi tech Industrial Development Zone, Zhejiang, Wenzhou, China Patentee before: C & U Group Ltd. Patentee before: HANGZHOU C&U MIDDLE BEARING Co.,Ltd. |
|
| CP01 | Change in the name or title of a patent holder | ||
| CP01 | Change in the name or title of a patent holder |
Address after: 325000 No. 16 Yongjiang Road, hi tech Industrial Development Zone, Wenzhou, Zhejiang Patentee after: C&U Co.,Ltd. Patentee after: Hangzhou Renben Motor Bearings Co.,Ltd. Address before: 325000 No. 16 Yongjiang Road, hi tech Industrial Development Zone, Wenzhou, Zhejiang Patentee before: C&U Co.,Ltd. Patentee before: HANGZHOU C&U MIDDLE BEARING CO.,LTD. |