CN106481654A - A kind of sliding bearing with hard alloy and polycrystalline diamond wearing layer - Google Patents
A kind of sliding bearing with hard alloy and polycrystalline diamond wearing layer Download PDFInfo
- Publication number
- CN106481654A CN106481654A CN201611133457.5A CN201611133457A CN106481654A CN 106481654 A CN106481654 A CN 106481654A CN 201611133457 A CN201611133457 A CN 201611133457A CN 106481654 A CN106481654 A CN 106481654A
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- China
- Prior art keywords
- polycrystalline diamond
- layer
- hard alloy
- rotating ring
- stationary ring
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Classifications
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16C—SHAFTS; FLEXIBLE SHAFTS; ELEMENTS OR CRANKSHAFT MECHANISMS; ROTARY BODIES OTHER THAN GEARING ELEMENTS; BEARINGS
- F16C17/00—Sliding-contact bearings for exclusively rotary movement
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16C—SHAFTS; FLEXIBLE SHAFTS; ELEMENTS OR CRANKSHAFT MECHANISMS; ROTARY BODIES OTHER THAN GEARING ELEMENTS; BEARINGS
- F16C33/00—Parts of bearings; Special methods for making bearings or parts thereof
- F16C33/02—Parts of sliding-contact bearings
- F16C33/04—Brasses; Bushes; Linings
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16C—SHAFTS; FLEXIBLE SHAFTS; ELEMENTS OR CRANKSHAFT MECHANISMS; ROTARY BODIES OTHER THAN GEARING ELEMENTS; BEARINGS
- F16C33/00—Parts of bearings; Special methods for making bearings or parts thereof
- F16C33/02—Parts of sliding-contact bearings
- F16C33/04—Brasses; Bushes; Linings
- F16C33/06—Sliding surface mainly made of metal
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- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Sliding-Contact Bearings (AREA)
Abstract
A kind of sliding bearing with hard alloy and polycrystalline diamond wearing layer, belongs to drilling equipment technical field.The described sliding bearing with hard alloy and polycrystalline diamond wearing layer includes stationary ring and rotating ring, described stationary ring is set in the outside of described rotating ring, setting stationary ring hard alloy abrasion-resistant layer and stationary ring polycrystalline diamond wearing layer on the inner surface of described stationary ring, outer surface setting rotating ring hard alloy abrasion-resistant layer and rotating ring polycrystalline diamond wearing layer in described rotating ring, described stationary ring hard alloy abrasion-resistant layer and rotating ring hard alloy abrasion-resistant layer cooperatively form friction pair, and stationary ring polycrystalline diamond wearing layer and rotating ring polycrystalline diamond wearing layer cooperatively form another friction pair.The present invention arranges two to friction pair so that radial direction righting sliding bearing has extremely strong wearability in a set of radial direction righting sliding bearing simultaneously, thus extending its service life.
Description
Technical field
The present invention relates to a kind of sliding bearing, especially a kind of be applied to turbine or helicoid hydraulic motor with hard alloy and
The sliding bearing of polycrystalline diamond wearing layer, belongs to drilling equipment technical field.
Background technology
Turbodrill and helicoid hydraulic motor are two kinds of common petroleum gases and geological drilling mud motor, its work
With being that the fluid pressure energy of drilling fluid is changed into mechanical energy, drill bit is driven to rotate to crush bottom rock.Radial direction righting
Bearing is the vitals in turbodrill and helicoid hydraulic motor, is also easily worn part, turbodrill and helicoid hydraulic motor maintenance work
One of main contents be to change radial direction alignment bearing.At present, the radial direction righting sliding bearing of mud motor is (also known as TC axle
Hold), its stationary ring and rotating ring work surface high-abrasive material are hard alloy, although the hardness of hard alloy very high (HRA89~92),
Because of (as Iron Ore Powder, quartz sand etc.) containing substantial amounts of solid phase particles in drilling fluid, these microparticles pass through can be to TC axle during TC bearing
Hold stationary ring and rotating ring fricting working surface causes serious abrasive wear, cause the working life of TC bearing to only have 150~200h (to bore
Well liquid solid concentration is higher, and bearing life is shorter) it is impossible to meet real work needs (it is desirable to the life-span of TC bearing can be with
The life-span of power drilling tool rotor, housing and main shaft is synchronous, can reach 300~more than 600h, thus extending the maintenance week of drilling tool
Phase, improve drilling well work efficiency.
Content of the invention
The present invention provides a kind of sliding bearing with hard alloy and polycrystalline diamond wearing layer and bores it is intended to extend turbine
The working life of radial direction alignment bearing, raising work efficiency, reduction drilling cost in tool or helicoid hydraulic motor.
For achieving the above object, the technical solution adopted in the present invention is:
A kind of sliding bearing with hard alloy and polycrystalline diamond wearing layer, including stationary ring and rotating ring, described stationary ring
It is set in the outside of described rotating ring, setting stationary ring hard alloy abrasion-resistant layer and stationary ring glomerocryst Buddha's warrior attendant on the inner surface of described stationary ring
Stone wearing layer, arranges rotating ring hard alloy abrasion-resistant layer and rotating ring polycrystalline diamond wearing layer in the outer surface of described rotating ring, described
Stationary ring hard alloy abrasion-resistant layer and rotating ring hard alloy abrasion-resistant layer cooperatively form friction pair, stationary ring polycrystalline diamond wearing layer
Cooperatively form another friction pair with rotating ring polycrystalline diamond wearing layer.
The above-mentioned sliding bearing with hard alloy and polycrystalline diamond wearing layer, the inner surface of described stationary ring is hard with stationary ring
Matter alloy wear-resisting layer, stationary ring polycrystalline diamond wearing layer are connected by stationary ring adhesive layer;The outer surface of described rotating ring with dynamic
Ring hard alloy abrasion-resistant layer, rotating ring polycrystalline diamond wearing layer are connected by rotating ring adhesive layer.
The above-mentioned sliding bearing with hard alloy and polycrystalline diamond wearing layer, described stationary ring adhesive layer, rotating ring glue
Knot oxidant layer is the adhesive layer that cast tungsten carbide is formed with copper-manganese-nickel alloy heating and melting.
The above-mentioned sliding bearing with hard alloy and polycrystalline diamond wearing layer, described stationary ring hard alloy abrasion-resistant layer,
Rotating ring hard alloy abrasion-resistant layer is the hard alloy blocks being embedded on adhesive layer, and described hard alloy blocks are in latticed matrix
Arrangement, the summation of its surface area is the 10%~50% of described stationary ring inner surface area;Described stationary ring polycrystalline diamond wearing layer,
Rotating ring polycrystalline diamond wearing layer is the polycrystalline diamond block being embedded on adhesive layer, and described polycrystalline diamond block is in grid
Shape matrix arrangement, the summation of its surface area is the 10%~80% of the inner surface area of described stationary ring.
The above-mentioned sliding bearing with hard alloy and polycrystalline diamond wearing layer, for mating the radial direction righting of helicoid hydraulic motor
Sliding bearing, its stationary ring hard alloy abrasion-resistant layer, that rotating ring hard alloy abrasion-resistant layer is the rectangle being embedded on adhesive layer is hard
Matter alloy block, described stationary ring polycrystalline diamond wearing layer, rotating ring polycrystalline diamond wearing layer are and are embedded on adhesive layer
Rectangle polycrystalline diamond block.
The above-mentioned sliding bearing with hard alloy and polycrystalline diamond wearing layer, for mating the radial direction righting of helicoid hydraulic motor
Sliding bearing, its stationary ring hard alloy abrasion-resistant layer, rotating ring hard alloy abrasion-resistant layer are the rectangular rigid being embedded in knot oxidant layer
Alloy block, described stationary ring polycrystalline diamond wearing layer, rotating ring polycrystalline diamond wearing layer are the triangle being embedded in knot oxidant layer
Shape polycrystalline diamond block.
The above-mentioned sliding bearing with hard alloy and polycrystalline diamond wearing layer, for mating the radial direction righting of turbodrill
Sliding bearing, it is hard that its stationary ring hard alloy abrasion-resistant layer, rotating ring hard alloy abrasion-resistant layer are the triangle being embedded in knot oxidant layer
Matter alloy block, described stationary ring polycrystalline diamond wearing layer, rotating ring polycrystalline diamond wearing layer are three being embedded in knot oxidant layer
Angular polycrystalline diamond block.
The above-mentioned sliding bearing with hard alloy and polycrystalline diamond wearing layer, for mating the radial direction righting of turbodrill
Sliding bearing, it is hard that its stationary ring hard alloy abrasion-resistant layer, rotating ring hard alloy abrasion-resistant layer are the triangle being embedded in knot oxidant layer
Matter alloy block, described stationary ring polycrystalline diamond wearing layer, rotating ring polycrystalline diamond wearing layer are the square being embedded in knot oxidant layer
Shape polycrystalline diamond block.
The present invention, after using technique scheme, has the effect of following technological progress:
The present invention passes through setting stationary ring hard alloy abrasion-resistant layer and stationary ring polycrystalline diamond wearing layer on stationary ring inner surface,
Setting rotating ring hard alloy abrasion-resistant layer and rotating ring polycrystalline diamond wearing layer, the stationary ring on stationary ring inner surface on rotating ring outer surface
Contact with each other during rotating ring hard alloy abrasion-resistant layer work on hard alloy abrasion-resistant layer and rotating ring outer surface, form a pair of friction
Secondary;Stationary ring polycrystalline diamond wearing layer on stationary ring inner surface is worked with the rotating ring polycrystalline diamond wearing layer on rotating ring outer surface
When contact with each other, formed another friction pair.Because the present invention is provided with two to friction in a set of radial direction righting sliding bearing
Secondary so that radial direction righting sliding bearing has extremely strong wearability, thus its service life of overlength.
Brief description
Fig. 1 is the cross-sectional view of the radial direction righting sliding bearing of coupling helicoid hydraulic motor;
Fig. 2 is the stationary ring cross-sectional view of the radial direction righting sliding bearing of coupling helicoid hydraulic motor;
Fig. 3 is the rotating ring cross-sectional view of the radial direction righting sliding bearing of coupling helicoid hydraulic motor;
Fig. 4 is the wear-resisting Rotating fields first embodiment schematic diagram of the radial direction righting sliding bearing of coupling helicoid hydraulic motor;
Fig. 5 is the wear-resisting Rotating fields second embodiment schematic diagram of the radial direction righting sliding bearing of coupling helicoid hydraulic motor;
Fig. 6 is the cross-sectional view of the radial direction righting sliding bearing of coupling turbodrill;
Fig. 7 is the stationary ring cross-sectional view of the radial direction righting sliding bearing of coupling turbodrill;
Fig. 8 is the rotating ring cross-sectional view of the radial direction righting sliding bearing of coupling turbodrill;
Fig. 9 is the wear-resisting Rotating fields 3rd embodiment schematic diagram of the radial direction righting sliding bearing of coupling turbodrill;
Figure 10 is the wear-resisting Rotating fields fourth embodiment schematic diagram of the radial direction righting sliding bearing of coupling turbodrill.
The each label of in figure is expressed as:1st, stationary ring, 1-1, stationary ring hard alloy abrasion-resistant layer, 1-2, stationary ring polycrystalline diamond are wear-resisting
Layer, 1-3, stationary ring adhesive layer, 2, rotating ring, 2-1, rotating ring hard alloy abrasion-resistant layer, 2-2, rotating ring polycrystalline diamond wearing layer, 2-
3rd, rotating ring adhesive layer;
Y, hard alloy blocks, Y1, rectangular rigid alloy block, Y2, triangle hard alloy blocks;
J, polycrystalline diamond block, J1, rectangle polycrystalline diamond block, J2, triangle polycrystalline diamond block.
Specific embodiment
Below in conjunction with the accompanying drawings and embodiment is described in further details to the present invention:
Referring to Fig. 1, Fig. 2, Fig. 3, Fig. 6, Fig. 7, Fig. 8, a kind of slip with hard alloy and polycrystalline diamond wearing layer
Bearing, including stationary ring 1 and rotating ring 2, described stationary ring 1 is set in the outside of described rotating ring 2;The inner surface of described stationary ring 1 sets
Put stationary ring hard alloy abrasion-resistant layer 1-1 and stationary ring polycrystalline diamond wearing layer 1-2, the inner surface of stationary ring 1 passes through by casting carbonization
The stationary ring adhesive layer 1-3 that tungsten is formed with copper-manganese-nickel alloy heating and melting and stationary ring hard alloy abrasion-resistant layer 1-1, stationary ring glomerocryst gold
Hard rock wearing layer 1-2 is connected;Outer surface setting rotating ring hard alloy abrasion-resistant layer 2-1 and rotating ring glomerocryst gold in described rotating ring 2
Hard rock wearing layer 2-2, the outer surface of rotating ring 2 passes through the rotating ring bonding being formed by cast tungsten carbide and copper-manganese-nickel alloy heating and melting
Oxidant layer 2-3 is connected with rotating ring hard alloy abrasion-resistant layer 2-1, rotating ring polycrystalline diamond wearing layer 2-2;Described stationary ring hard alloy
Wearing layer 1-1 and rotating ring hard alloy abrasion-resistant layer 2-1 cooperatively form friction pair, stationary ring polycrystalline diamond wearing layer 1-2 with
Rotating ring polycrystalline diamond wearing layer 2-2 cooperatively forms another friction pair.
Referring to Fig. 1, Fig. 2, Fig. 3, Fig. 6, Fig. 7, Fig. 8, of the present invention wear-resisting with hard alloy and polycrystalline diamond
The sliding bearing of layer, described stationary ring hard alloy abrasion-resistant layer 1-1, rotating ring hard alloy abrasion-resistant layer 1-2 are and are embedded in binding agent
Hard alloy blocks Y on layer, described hard alloy blocks Y are in latticed matrix arrangement, and the summation of its surface area is in described stationary ring
The 10%~50% of surface area;Described stationary ring polycrystalline diamond wearing layer 2-1, rotating ring polycrystalline diamond wearing layer 2-2 are
It is embedded in the polycrystalline diamond block J on adhesive layer, described polycrystalline diamond block J is in latticed matrix arrangement, its surface area
Summation is the 10%~80% of the inner surface area of described stationary ring.
Referring to Fig. 1, Fig. 2, Fig. 3, Fig. 4, the first embodiment of the present invention is the radial direction righting sliding axle of coupling helicoid hydraulic motor
Hold, its stationary ring hard alloy abrasion-resistant layer 1-1, that rotating ring hard alloy abrasion-resistant layer 2-1 is the rectangle being embedded on adhesive layer is hard
Matter alloy block Y1, described stationary ring polycrystalline diamond wearing layer 1-2, rotating ring polycrystalline diamond wearing layer 2-2 are to be embedded in and glue in year
Rectangle polycrystalline diamond block J1 in knot oxidant layer.
Referring to Fig. 1, Fig. 2, Fig. 3, Fig. 5, the second embodiment of the present invention is the radial direction righting sliding axle of coupling helicoid hydraulic motor
Hold, its stationary ring hard alloy abrasion-resistant layer 1-1, rotating ring hard alloy abrasion-resistant layer 2-1 are the rectangular rigid being embedded in knot oxidant layer
Alloy block Y1, described stationary ring polycrystalline diamond wearing layer 1-2, rotating ring polycrystalline diamond wearing layer 2-2 are and are embedded in binding agent
Triangle polycrystalline diamond block J2 on layer.
Referring to Fig. 6, Fig. 7, Fig. 8, Fig. 9, the third embodiment of the present invention is the radial direction righting sliding axle of coupling turbodrill
Hold, its stationary ring hard alloy abrasion-resistant layer 1-1, rotating ring hard alloy abrasion-resistant layer 2-1 are the triangle being embedded on adhesive layer
Hard alloy blocks Y2, described stationary ring polycrystalline diamond wearing layer 2-1, rotating ring polycrystalline diamond wearing layer 2-2 be embedded in viscous
Triangle polycrystalline diamond block J2 in knot oxidant layer.
Referring to Fig. 6, Fig. 7, Fig. 8, Figure 10, the third embodiment of the present invention is the radial direction righting sliding axle of coupling turbodrill
Hold, its stationary ring hard alloy abrasion-resistant layer 1-1, rotating ring hard alloy abrasion-resistant layer 2-1 are the triangle being embedded on adhesive layer
Hard alloy blocks Y2, described stationary ring polycrystalline diamond wearing layer 1-2, rotating ring polycrystalline diamond wearing layer 2-2 are and are embedded in year
Rectangle polycrystalline diamond block J1 in knot oxidant layer.
Claims (8)
1. a kind of sliding bearing with hard alloy and polycrystalline diamond wearing layer it is characterised in that:Described sliding axle is contracted
Include stationary ring (1) and rotating ring (2), described stationary ring (1) is set in the outside of described rotating ring (2), on the inner surface of described stationary ring (1)
Setting stationary ring hard alloy abrasion-resistant layer (1-1) and stationary ring polycrystalline diamond wearing layer (1-2), in the outer surface of described rotating ring (2)
Setting rotating ring hard alloy abrasion-resistant layer (2-1) and rotating ring polycrystalline diamond wearing layer (2-2), described stationary ring hard alloy abrasion-resistant layer
(1-1) cooperatively form friction pair with rotating ring hard alloy abrasion-resistant layer (2-1), stationary ring polycrystalline diamond wearing layer (1-2) with
Rotating ring polycrystalline diamond wearing layer (2-2) cooperatively forms another friction pair.
2. the sliding bearing with hard alloy and polycrystalline diamond wearing layer according to claim 1 it is characterised in that:
The inner surface of described stationary ring (1) and stationary ring hard alloy abrasion-resistant layer (1-1), stationary ring polycrystalline diamond wearing layer (1-2) pass through quiet
Ring adhesive layer (1-3) is connected;The outer surface of described rotating ring (2) and rotating ring hard alloy abrasion-resistant layer (2-1), rotating ring glomerocryst gold
Hard rock wearing layer (2-2) is connected by rotating ring adhesive layer (2-3).
3. the sliding bearing with hard alloy and polycrystalline diamond wearing layer according to claim 2 it is characterised in that:
Described stationary ring adhesive layer (1-3), rotating ring adhesive layer (2-3) are cast tungsten carbide and copper-manganese-nickel alloy heating and melting is formed
Adhesive layer.
4. the sliding bearing with hard alloy and polycrystalline diamond wearing layer according to claim 3 it is characterised in that:
Described stationary ring hard alloy abrasion-resistant layer (1-1), rotating ring hard alloy abrasion-resistant layer (1-2) are the hard being embedded on adhesive layer
Alloy block (Y), described hard alloy blocks (Y) are in latticed matrix arrangement, and the summation of its surface area is described stationary ring inner surface face
Long-pending 10%~50%;Described stationary ring polycrystalline diamond wearing layer (2-1), rotating ring polycrystalline diamond wearing layer (2-2) are edge
It is embedded in the polycrystalline diamond block (J) on adhesive layer, described polycrystalline diamond block (J) is in latticed matrix arrangement, its surface area
Summation be described stationary ring inner surface area 10%~80%.
5. the sliding bearing with hard alloy and polycrystalline diamond wearing layer according to claim 4 it is characterised in that:
Described sliding bearing is the radial direction righting sliding bearing of coupling helicoid hydraulic motor, and its stationary ring hard alloy abrasion-resistant layer (1-1), rotating ring are hard
Matter alloy wear-resisting layer (2-1) is the rectangular rigid alloy block (Y1) being embedded on adhesive layer, described stationary ring polycrystalline diamond
Wearing layer (1-2), rotating ring polycrystalline diamond wearing layer (2-2) are the rectangle polycrystalline diamond block being embedded on year adhesive layer
(J1).
6. the sliding bearing with hard alloy and polycrystalline diamond wearing layer according to claim 4 it is characterised in that:
Described sliding bearing is the radial direction righting sliding bearing of coupling helicoid hydraulic motor, and its stationary ring hard alloy abrasion-resistant layer (1-1), rotating ring are hard
Matter alloy wear-resisting layer (2-1) is the rectangular rigid alloy block (Y1) being embedded in knot oxidant layer, and described stationary ring polycrystalline diamond is resistance to
Mill layer (1-2), rotating ring polycrystalline diamond wearing layer (2-2) are the triangle polycrystalline diamond block being embedded on adhesive layer
(J2).
7. the sliding bearing with hard alloy and polycrystalline diamond wearing layer according to claim 4 it is characterised in that:
Described sliding bearing is the radial direction righting sliding bearing of coupling turbodrill, and its stationary ring hard alloy abrasion-resistant layer (1-1), rotating ring are hard
Matter alloy wear-resisting layer (2-1) is the triangle hard alloy blocks (Y2) being embedded on adhesive layer, described stationary ring glomerocryst Buddha's warrior attendant
Stone wearing layer (2-1), rotating ring polycrystalline diamond wearing layer (2-2) are the triangle polycrystalline diamond being embedded on adhesive layer
Block (J2).
8. the sliding bearing with hard alloy and polycrystalline diamond wearing layer according to claim 4 it is characterised in that:
Described sliding bearing is the radial direction righting sliding bearing of coupling turbodrill, and its stationary ring hard alloy abrasion-resistant layer (1-1), rotating ring are hard
Matter alloy wear-resisting layer (2-1) is the triangle hard alloy blocks (Y2) being embedded on adhesive layer, described stationary ring glomerocryst Buddha's warrior attendant
Stone wearing layer (1-2), rotating ring polycrystalline diamond wearing layer (2-2) are and are embedded in the rectangle polycrystalline diamond block tied in year in oxidant layer
(J1).
Priority Applications (1)
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CN201611133457.5A CN106481654A (en) | 2016-12-10 | 2016-12-10 | A kind of sliding bearing with hard alloy and polycrystalline diamond wearing layer |
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CN201611133457.5A CN106481654A (en) | 2016-12-10 | 2016-12-10 | A kind of sliding bearing with hard alloy and polycrystalline diamond wearing layer |
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Cited By (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN111457004A (en) * | 2020-04-09 | 2020-07-28 | 中国石油大学(北京) | Sliding bearing assembly with radial centralizing and axial thrust functions |
CN112513402A (en) * | 2018-07-30 | 2021-03-16 | Xr井下有限责任公司 | Polycrystalline diamond radial bearing |
CN113027328A (en) * | 2021-04-29 | 2021-06-25 | 北京春仑石油技术开发有限公司 | Integral double-axial-action sliding bearing assembly and sliding bearing thereof |
CN113027923A (en) * | 2021-04-29 | 2021-06-25 | 北京春仑石油技术开发有限公司 | Biaxial action sliding bearing assembly and sliding bearing thereof |
CN118188699A (en) * | 2024-01-22 | 2024-06-14 | 北京凝华金刚石轴承有限公司 | Polycrystalline diamond spherical sliding bearing and drilling tool |
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Cited By (8)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN112513402A (en) * | 2018-07-30 | 2021-03-16 | Xr井下有限责任公司 | Polycrystalline diamond radial bearing |
CN112513402B (en) * | 2018-07-30 | 2024-05-10 | Xr井下有限责任公司 | Polycrystalline diamond radial bearing |
CN111457004A (en) * | 2020-04-09 | 2020-07-28 | 中国石油大学(北京) | Sliding bearing assembly with radial centralizing and axial thrust functions |
CN111457004B (en) * | 2020-04-09 | 2024-05-14 | 中国石油大学(北京) | Sliding bearing assembly with radial centralizing and axial thrust functions |
CN113027328A (en) * | 2021-04-29 | 2021-06-25 | 北京春仑石油技术开发有限公司 | Integral double-axial-action sliding bearing assembly and sliding bearing thereof |
CN113027923A (en) * | 2021-04-29 | 2021-06-25 | 北京春仑石油技术开发有限公司 | Biaxial action sliding bearing assembly and sliding bearing thereof |
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CN118188699A (en) * | 2024-01-22 | 2024-06-14 | 北京凝华金刚石轴承有限公司 | Polycrystalline diamond spherical sliding bearing and drilling tool |
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