CN114704554A - Bearing mounting seat with lubricating oil injection - Google Patents
Bearing mounting seat with lubricating oil injection Download PDFInfo
- Publication number
- CN114704554A CN114704554A CN202210309253.1A CN202210309253A CN114704554A CN 114704554 A CN114704554 A CN 114704554A CN 202210309253 A CN202210309253 A CN 202210309253A CN 114704554 A CN114704554 A CN 114704554A
- Authority
- CN
- China
- Prior art keywords
- oil
- groove
- mounting seat
- bearing
- bearing mounting
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
- 239000010687 lubricating oil Substances 0.000 title claims abstract description 24
- 238000002347 injection Methods 0.000 title claims abstract description 10
- 239000007924 injection Substances 0.000 title claims abstract description 10
- 239000003921 oil Substances 0.000 claims abstract description 98
- 239000007921 spray Substances 0.000 claims 4
- 238000009434 installation Methods 0.000 abstract description 5
- 230000005540 biological transmission Effects 0.000 abstract description 4
- 239000000446 fuel Substances 0.000 abstract 1
- 238000005461 lubrication Methods 0.000 description 5
- 238000003801 milling Methods 0.000 description 5
- 229910000831 Steel Inorganic materials 0.000 description 3
- 230000001050 lubricating effect Effects 0.000 description 3
- 239000010959 steel Substances 0.000 description 3
- 238000010586 diagram Methods 0.000 description 2
- 238000007599 discharging Methods 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 238000005096 rolling process Methods 0.000 description 2
- 229910000838 Al alloy Inorganic materials 0.000 description 1
- 229910001051 Magnalium Inorganic materials 0.000 description 1
- 238000005299 abrasion Methods 0.000 description 1
- 229910045601 alloy Inorganic materials 0.000 description 1
- 239000000956 alloy Substances 0.000 description 1
- SNAAJJQQZSMGQD-UHFFFAOYSA-N aluminum magnesium Chemical compound [Mg].[Al] SNAAJJQQZSMGQD-UHFFFAOYSA-N 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000005484 gravity Effects 0.000 description 1
- 238000007790 scraping Methods 0.000 description 1
- 238000007789 sealing Methods 0.000 description 1
- 239000000243 solution Substances 0.000 description 1
- 230000007704 transition Effects 0.000 description 1
- 238000004260 weight control Methods 0.000 description 1
Images
Classifications
-
- 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
- F16C35/00—Rigid support of bearing units; Housings, e.g. caps, covers
- F16C35/04—Rigid support of bearing units; Housings, e.g. caps, covers in the case of ball or roller bearings
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23C—MILLING
- B23C3/00—Milling particular work; Special milling operations; Machines therefor
- B23C3/28—Grooving workpieces
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23C—MILLING
- B23C3/00—Milling particular work; Special milling operations; Machines therefor
- B23C3/28—Grooving workpieces
- B23C3/34—Milling grooves of other forms, e.g. circumferential
-
- 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
- F16C37/00—Cooling of bearings
- F16C37/007—Cooling of bearings of rolling bearings
-
- 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
- F16N—LUBRICATING
- F16N21/00—Conduits; Junctions; Fittings for lubrication apertures
- F16N21/04—Nozzles for connection of lubricating equipment to nipples
-
- 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
- F16N—LUBRICATING
- F16N31/00—Means for collecting, retaining, or draining-off lubricant in or on machines or apparatus
- F16N31/02—Oil catchers; Oil wipers
-
- 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
- F16N—LUBRICATING
- F16N7/00—Arrangements for supplying oil or unspecified lubricant from a stationary reservoir or the equivalent in or on the machine or member to be lubricated
- F16N7/38—Arrangements for supplying oil or unspecified lubricant from a stationary reservoir or the equivalent in or on the machine or member to be lubricated with a separate pump; Central lubrication systems
Landscapes
- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Details Of Gearings (AREA)
- Rolling Contact Bearings (AREA)
Abstract
The invention belongs to the technical field of design of an aircraft engine accessory system, and provides a bearing mounting seat with lubricating oil injection. The bearing mounting seat is annular; an oil groove is formed in the inner end face of the bearing mounting seat along the axial direction; an oil inlet hole communicated with the oil groove is formed in the outer end face of the bearing mounting seat along the radial direction; an annular through groove is formed in the bearing mounting seat and communicated with the bottom of the oil groove. Still open along the axial on the bearing mount pad and have an oil return to lead to the groove, the oil return leads to groove and annular to lead to the groove intercommunication, and oil return leads to groove length and bearing mount pad height and equals, and oil groove length is less than the bearing mount pad height. The bearing frame redesigns on the basis of original aviation bearing frame commonly used, has both had the function for the bearing of installation provides the location demand simultaneously has for the bearing of installation lubricates fuel feeding and oil return concurrently, according to specific in service behavior, can simplify aeroengine annex transmission system's product structure to a certain extent, reduces in the past and needs oil sprayer, oil sprayer fixed mounting and requirement such as sealed.
Description
Technical Field
The invention belongs to the technical field of design of an aircraft engine accessory system, and provides a bearing mounting seat with lubricating oil injection.
Background
A transmission system in the aircraft engine accessory transmission casing is provided with a plurality of gears, and an input shaft is led from an engine and drives the whole accessory transmission system to work after input. According to the requirement of overall weight control, under the condition that the strength allows, the material of the accessory casing is generally magnesium-aluminum alloy, each gear and each gear shaft can be provided with two bearings so as to meet the rotation requirement of the gear or the gear shaft, the installation of the inner ring and the outer ring of each bearing usually requires that the inner ring is in interference fit or clearance fit, and the outer ring is in transition fit or interference fit. The inner ring and the bearing are made of steel materials, and no problem exists in matching. If the outer ring is directly arranged on the accessory shell, the outer ring is dragged to rotate together when the bearing rotates during operation due to the fact that the outer ring is made of steel. The abrasion to the Magnalium alloy of the casing is generated, so that the bearing mounting seat which can process steel at the bearing mounting position is generally contacted with the bearing outer ring, the problem of scraping can be solved, the processing is convenient, and the bearing can be well positioned.
The common bearing mounting seat only plays a role in positioning a bearing, then a lubricating oil inlet oil path is led from a position of a casing body nearby, devices such as an oil nozzle and the like are mounted to lubricate the bearing, and due to the fact that space of an aircraft engine is limited, when the oil nozzle is mounted, the mounting position of the oil nozzle is small, the shape of the oil nozzle is complex, meanwhile, the requirements for mounting, fixing and sealing of the contact position of the oil nozzle and the oil path need to be considered, and more parts are needed to lubricate the bearing.
Disclosure of Invention
The invention aims to: in order to optimize the condition, the invention designs the bearing mounting seat with lubricating oil injection, which can effectively solve the problem of bearing lubrication.
The technical scheme of the invention is as follows:
a bearing mounting seat with lubricating oil injection is annular;
an oil groove is formed in the inner end face of the bearing mounting seat along the axial direction;
an oil inlet hole communicated with the oil groove is formed in the outer end face of the bearing mounting seat along the radial direction;
and an annular through groove is formed in the bearing mounting seat and is communicated with the bottom of the oil groove.
Further, an oil return through groove is formed in the bearing mounting seat in the axial direction and communicated with the annular through groove.
Further, the length of the oil return through groove is equal to the height of the bearing mounting seat, and the length of the oil return through groove is smaller than the height of the bearing mounting seat.
Furthermore, the cross section of the oil groove is fan-shaped, the angle of the fan-shaped is 120-150 degrees, the diameter is 15-50 mm, and the depth is 1.5-3 mm.
Further, the number of the oil grooves is the same as that of the oil inlet holes, and the number of the oil grooves is one to three.
Furthermore, the diameter range of the oil inlet hole is 0.5 mm-2 mm.
Further, the cross sectional area of the oil return through groove is 2-3 times of that of the oil groove.
Further, the height of the annular oil groove is 0.8 mm-2 mm.
The invention has the following beneficial effects:
1. the bearing mounting seat newly designed by the invention can realize the lubrication of the bearing;
2. the invention can adjust the corresponding size of the mounting seat according to the oil requirement of the integral bearing so as to meet the requirement.
3. The newly designed bearing mounting seat can reduce the number of bearing lubricating parts of the aeroengine and simplify the structure of the whole engine lubricating system.
Drawings
FIG. 1 is a schematic structural diagram of a bearing mount according to an embodiment of the present invention;
FIG. 2 is a cross-sectional view taken along plane A-A of a bearing mount of an embodiment of the present invention;
FIG. 3 is a schematic diagram of an example of oil inlet and return in the embodiment of the invention;
in the figure, 1 is an oil inlet, 2 is an oil groove, 3 is an annular through groove, and 4 is an oil return through groove; 5-bearing seat, 6-bearing, 7-gear shaft and 8-accessory casing shell.
Detailed Description
This section is an example of the present invention and is provided to explain and illustrate the technical solutions of the present invention.
The utility model provides a from bearing mount pad of lubricated oil spout in area, newly-designed one kind both can satisfy bearing installation location demand, can provide lubricated bearing mount pad for the bearing simultaneously.
An example of the bearing mounting seat is shown in fig. 1 and fig. 2, an oil inlet 1 is machined on the outer end face of the bearing mounting seat and is communicated with the inner end face of the bearing mounting seat, the size of the oil inlet is selected according to the lubricating calculation result and the pressure, the oil inlet is selected to be phi 0.5mm through calculation, the oil supply quantity of bearing lubrication can be met, the oil requirement is small, and the oil inlet with the phi 0.5mm can be met. If the oil quantity needed in other designs is more than 3 times of that of the scheme, 2 oil inlet holes can be machined, the maximum quantity is not more than 3, the hole size can be adjusted between phi 0.5mm and phi 2mm, and the requirements of other schemes can be met.
The inner end face of an oil inlet of the bearing mounting seat is processed into a cylindrical oil groove 2 by a milling cutter, the size and the depth of the oil groove are controlled in consideration of the oil supply amount and the overall strength during the oil groove processing, so that a sufficient space is reserved after the bearing is mounted to enable lubricating oil to enter a bearing retainer and a rolling body, the oil supply position is affected by the sector area and the processing depth, the oil requirement margin is calculated, the diameter phi 15(R7.5) mm of the milling cutter is selected according to the scheme, the sector angle is about 130 degrees, the depth is about 1.5mm when the inner end face of the bearing mounting seat is processed outwards, and oil supply can be achieved. If other schemes require larger oil quantity, the diameter of the milling cutter can be enlarged to be between 20 mm and 50mm, the fan-shaped angle of a processing part is increased to 150 degrees, and the depth can be properly increased to 3 mm.
The annular oil groove 3 is processed at the bottom of the bearing seat mounting bearing, so that a gap is not formed between the annular oil groove and the bottom surface of the bearing mounting seat when the bearing is mounted conveniently, the bearing can be supplied with auxiliary oil and the discharge of redundant lubricating oil is facilitated, the size of the annular oil groove in the scheme is phi 0.8mm, and the maximum adjustment can be carried out to be not more than phi 2mm if the discharge amount required by other schemes is larger.
Opposite to inlet port and oil groove, milling cutter processing whole oil return leads to groove 4, after the bearing installation, fully consider the oil return condition and required space, there is sufficient position to carry out the oil return to unnecessary lubricating oil, the oil return groove of general condition is more than 2 times of oil feed groove area at least, in order to satisfy the oil return demand, can reach 3 times under the circumstances that allows, select milling cutter diameter phi 10 through calculating this scheme, process into 30 annular logical grooves, the area is 2.2 times of oil feed groove area probably, convenient processing satisfies the oil return demand again promptly, if other schemes return oil volume demands are great, can design according to 3 times.
The working principle of the invention is illustrated by means of fig. 3.
Lubricating oil is pressurized by an oil pump from an oil tank, the lubricating oil with pressure enters an oil supply pipeline inside an accessory cartridge shell through an external oil way, enters an annular groove outside a hole for mounting a bearing mounting seat along the oil supply pipeline route in the accessory cartridge shell or directly reaches the outer diameter of the bearing mounting seat, enters the bearing mounting seat through an oil inlet hole 1 in the outer diameter of the bearing mounting seat, is sprayed into a rolling body and a retainer of the bearing through a gap between a cylindrical oil groove 2 and an outer ring of the bearing after the pressure lubricating oil is filled in a space of a cylindrical oil groove 2 and the outer ring of the bearing instantly, and lubricates and cools the whole moving bearing along with the rotation of the bearing, most of the lubricating oil after lubrication flows out by gravity, and redundant lubricating oil flows out to an oil return groove 4 of the bearing mounting seat through an annular oil groove 3 at the bottom end of the bearing mounting seat and the upper end face of the bearing to finish the feeding, discharging and discharging of the lubricating oil to the bearing, And (5) oil return and lubrication.
Claims (8)
1. A bearing mounting seat with lubricating oil injection is characterized in that the bearing mounting seat is annular;
an oil groove is formed in the inner end face of the bearing mounting seat along the axial direction;
an oil inlet hole communicated with the oil groove is formed in the outer end face of the bearing mounting seat along the radial direction;
an annular through groove is formed in the bearing mounting seat and communicated with the bottom of the oil groove.
2. The bearing mounting seat with lubricating oil injection function according to claim 1, wherein the bearing mounting seat is further provided with an oil return through groove along the axial direction, and the oil return through groove is communicated with the annular through groove.
3. The bearing mounting seat with lubricating oil injection function according to claim 2, wherein the length of the oil return through groove is equal to the height of the bearing mounting seat, and the length of the oil return through groove is smaller than the height of the bearing mounting seat.
4. The bearing mounting seat with self-lubricating oil spray as claimed in claim 1, wherein the cross section of the oil groove is fan-shaped, the angle of the fan-shaped is 120-150 degrees, the diameter is 15-50 mm, and the depth is 1.5-3 mm.
5. The bearing mounting seat with the lubricating oil spray is characterized in that the number of the oil grooves and the number of the oil inlet holes are the same, and the number of the oil grooves and the oil inlet holes is one to three.
6. The bearing mounting seat with self-lubricating oil spray as claimed in claim 1, wherein the diameter of the oil inlet hole ranges from 0.5mm to 2 mm.
7. The bearing mounting seat with lubricating oil injection function according to claim 3, wherein the cross-sectional area of the oil return through groove is 2-3 times that of the oil groove.
8. The bearing mounting seat with self-lubricating oil spray as claimed in claim 1, wherein the height of the annular oil groove is 0.8 mm-2 mm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210309253.1A CN114704554B (en) | 2022-03-25 | 2022-03-25 | Bearing mounting seat with self-lubricating oil injection function |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210309253.1A CN114704554B (en) | 2022-03-25 | 2022-03-25 | Bearing mounting seat with self-lubricating oil injection function |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN114704554A true CN114704554A (en) | 2022-07-05 |
| CN114704554B CN114704554B (en) | 2023-11-24 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202210309253.1A Active CN114704554B (en) | 2022-03-25 | 2022-03-25 | Bearing mounting seat with self-lubricating oil injection function |
Country Status (1)
| Country | Link |
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Citations (29)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CA432460A (en) * | 1946-01-08 | Clare Sprankling Le Clair Camille | Shaft or spindle lubrication system | |
| GB864061A (en) * | 1958-08-29 | 1961-03-29 | Timken Roller Bearing Co | Improvements relating to axle-boxes and other bearing housings |
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| IT1006463B (en) * | 1973-04-16 | 1976-09-30 | Miller G | PROVISION TO LIMIT OIL LOSSES IN BEARINGS OF SWITCHING OFF TRACTION MOTORS |
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| GB1556760A (en) * | 1975-11-20 | 1979-11-28 | Kuehnle M R | Method and apparatus for making helical bearing races |
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| CN103161830A (en) * | 2013-04-07 | 2013-06-19 | 四川皇龙智能破碎技术股份有限公司 | High-temperature-resistance bearing base |
| CN103195819A (en) * | 2013-04-26 | 2013-07-10 | 如皋市非标轴承有限公司 | Large-scale high-rotation-speed oil filling bearing |
| CN103423315A (en) * | 2013-08-12 | 2013-12-04 | 苏州市合昌电器有限公司 | Bearing pedestal |
| CN203770601U (en) * | 2014-03-12 | 2014-08-13 | 贵州航空发动机研究所 | Transmission lubrication device |
| CN104493647A (en) * | 2014-12-25 | 2015-04-08 | 安徽嘉龙锋钢刀具有限公司 | Special-purpose grinding machine for cutting tool edge and use method of special-purpose grinding machine |
| CN104848020A (en) * | 2015-05-18 | 2015-08-19 | 江苏一机机械科技有限公司 | Guide post for hydraulic press |
| CN105927839A (en) * | 2016-07-12 | 2016-09-07 | 合肥新沪屏蔽泵有限公司 | Special bearing oiler for shielding pump |
| CN207049198U (en) * | 2017-06-02 | 2018-02-27 | 吴国呈 | Bearing holder (housing, cover) with oil storage cooling protection |
| CN209324879U (en) * | 2018-12-31 | 2019-08-30 | 兰州兰泵有限公司 | A kind of bearing lubricating oil circuit |
| CN210189449U (en) * | 2019-07-11 | 2020-03-27 | 安阳工学院 | Horizontal permanent magnet synchronous dynamic and static piezoelectric main shaft |
| CN210732135U (en) * | 2019-08-20 | 2020-06-12 | 安阳莱工科技有限公司 | Pressure measurement double-grinding-wheel permanent magnet synchronous dynamic and static piezoelectric main shaft |
| CN210799760U (en) * | 2019-08-13 | 2020-06-19 | 江苏丰尚智能科技有限公司 | Bearing seat lubricating and sealing mechanism and single-screw extrusion puffing machine |
| CN213540823U (en) * | 2020-11-04 | 2021-06-25 | 吉林省中暖节能科技有限公司 | Sealing device of turbine shaft |
-
2022
- 2022-03-25 CN CN202210309253.1A patent/CN114704554B/en active Active
Patent Citations (29)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CA432460A (en) * | 1946-01-08 | Clare Sprankling Le Clair Camille | Shaft or spindle lubrication system | |
| GB864061A (en) * | 1958-08-29 | 1961-03-29 | Timken Roller Bearing Co | Improvements relating to axle-boxes and other bearing housings |
| DE6942822U (en) * | 1969-07-31 | 1971-08-05 | Bbc Brown Boveri & Cie | DEVICE FOR MANUFACTURING UNDERCUT CIRCULAR GROOVES. |
| IT1006463B (en) * | 1973-04-16 | 1976-09-30 | Miller G | PROVISION TO LIMIT OIL LOSSES IN BEARINGS OF SWITCHING OFF TRACTION MOTORS |
| CA1020435A (en) * | 1974-02-14 | 1977-11-08 | Barry D. Selfe | Routing apparatus |
| GB1556760A (en) * | 1975-11-20 | 1979-11-28 | Kuehnle M R | Method and apparatus for making helical bearing races |
| CA1253441A (en) * | 1986-09-23 | 1989-05-02 | Gerald Narbut | Bearing lubrication for spindles in vehicles |
| US20030060097A1 (en) * | 2001-09-18 | 2003-03-27 | Tomohiro Fuse | Drive shaft bearing structure for watercraft |
| JP2005273715A (en) * | 2004-03-23 | 2005-10-06 | Mitsubishi Fuso Truck & Bus Corp | Bearing device for engine |
| CN101053874A (en) * | 2007-05-23 | 2007-10-17 | 福达合金材料股份有限公司 | Method for preparing double side mosaic type hot-rolling composite silver copper strip |
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| CN101618467A (en) * | 2009-07-21 | 2010-01-06 | 康脉精机科技（嘉兴）有限公司 | Processing machine |
| US20120328226A1 (en) * | 2009-12-02 | 2012-12-27 | Schaeffler Technologies AG & Co. KG | Rolling bearing arrangement |
| CN102808856A (en) * | 2011-09-15 | 2012-12-05 | 王福贵 | Novel gearbox type bearing box and manufacturing method thereof |
| CN102352951A (en) * | 2011-10-19 | 2012-02-15 | 重庆建设·雅马哈摩托车有限公司 | Lubricating grease uniform coating system and method of oil seal lip mouth |
| CN103161830A (en) * | 2013-04-07 | 2013-06-19 | 四川皇龙智能破碎技术股份有限公司 | High-temperature-resistance bearing base |
| CN103195819A (en) * | 2013-04-26 | 2013-07-10 | 如皋市非标轴承有限公司 | Large-scale high-rotation-speed oil filling bearing |
| CN103423315A (en) * | 2013-08-12 | 2013-12-04 | 苏州市合昌电器有限公司 | Bearing pedestal |
| CN203770601U (en) * | 2014-03-12 | 2014-08-13 | 贵州航空发动机研究所 | Transmission lubrication device |
| CN104493647A (en) * | 2014-12-25 | 2015-04-08 | 安徽嘉龙锋钢刀具有限公司 | Special-purpose grinding machine for cutting tool edge and use method of special-purpose grinding machine |
| CN104848020A (en) * | 2015-05-18 | 2015-08-19 | 江苏一机机械科技有限公司 | Guide post for hydraulic press |
| CN105927839A (en) * | 2016-07-12 | 2016-09-07 | 合肥新沪屏蔽泵有限公司 | Special bearing oiler for shielding pump |
| CN207049198U (en) * | 2017-06-02 | 2018-02-27 | 吴国呈 | Bearing holder (housing, cover) with oil storage cooling protection |
| CN209324879U (en) * | 2018-12-31 | 2019-08-30 | 兰州兰泵有限公司 | A kind of bearing lubricating oil circuit |
| CN210189449U (en) * | 2019-07-11 | 2020-03-27 | 安阳工学院 | Horizontal permanent magnet synchronous dynamic and static piezoelectric main shaft |
| CN210799760U (en) * | 2019-08-13 | 2020-06-19 | 江苏丰尚智能科技有限公司 | Bearing seat lubricating and sealing mechanism and single-screw extrusion puffing machine |
| CN210732135U (en) * | 2019-08-20 | 2020-06-12 | 安阳莱工科技有限公司 | Pressure measurement double-grinding-wheel permanent magnet synchronous dynamic and static piezoelectric main shaft |
| CN213540823U (en) * | 2020-11-04 | 2021-06-25 | 吉林省中暖节能科技有限公司 | Sealing device of turbine shaft |
Also Published As
| Publication number | Publication date |
|---|---|
| CN114704554B (en) | 2023-11-24 |
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