CN110145536B - Radial sliding bearing with automatic oil blocking adjusting device - Google Patents
Radial sliding bearing with automatic oil blocking adjusting device Download PDFInfo
- Publication number
- CN110145536B CN110145536B CN201910466661.6A CN201910466661A CN110145536B CN 110145536 B CN110145536 B CN 110145536B CN 201910466661 A CN201910466661 A CN 201910466661A CN 110145536 B CN110145536 B CN 110145536B
- Authority
- CN
- China
- Prior art keywords
- oil blocking
- oil
- sliding bearing
- radial sliding
- piezoelectric actuator
- 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.)
- Expired - Fee Related
Links
- 230000000903 blocking effect Effects 0.000 title claims abstract description 64
- 238000006073 displacement reaction Methods 0.000 claims abstract description 31
- 230000001105 regulatory effect Effects 0.000 claims description 3
- 230000004069 differentiation Effects 0.000 claims description 2
- 230000010354 integration Effects 0.000 claims description 2
- 239000003921 oil Substances 0.000 abstract description 76
- 239000010687 lubricating oil Substances 0.000 abstract description 11
- 238000011144 upstream manufacturing Methods 0.000 abstract description 3
- 238000005299 abrasion Methods 0.000 description 3
- 238000005461 lubrication Methods 0.000 description 3
- 230000009286 beneficial effect Effects 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 230000001050 lubricating effect Effects 0.000 description 2
- 238000010521 absorption reaction Methods 0.000 description 1
- 230000002411 adverse Effects 0.000 description 1
- 238000001816 cooling Methods 0.000 description 1
- 238000013016 damping Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000001125 extrusion Methods 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 238000005096 rolling process Methods 0.000 description 1
- 238000010008 shearing 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
- F16C17/00—Sliding-contact bearings for exclusively rotary movement
- F16C17/02—Sliding-contact bearings for exclusively rotary movement for radial load only
-
- 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
- F16C35/00—Rigid support of bearing units; Housings, e.g. caps, covers
- F16C35/02—Rigid support of bearing units; Housings, e.g. caps, covers in the case of sliding-contact 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
- F16C—SHAFTS; FLEXIBLE SHAFTS; ELEMENTS OR CRANKSHAFT MECHANISMS; ROTARY BODIES OTHER THAN GEARING ELEMENTS; BEARINGS
- F16C41/00—Other accessories, e.g. devices integrated in the bearing not relating to the bearing function as such
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01B—MEASURING LENGTH, THICKNESS OR SIMILAR LINEAR DIMENSIONS; MEASURING ANGLES; MEASURING AREAS; MEASURING IRREGULARITIES OF SURFACES OR CONTOURS
- G01B21/00—Measuring arrangements or details thereof, where the measuring technique is not covered by the other groups of this subclass, unspecified or not relevant
- G01B21/02—Measuring arrangements or details thereof, where the measuring technique is not covered by the other groups of this subclass, unspecified or not relevant for measuring length, width, or thickness
-
- G—PHYSICS
- G05—CONTROLLING; REGULATING
- G05B—CONTROL OR REGULATING SYSTEMS IN GENERAL; FUNCTIONAL ELEMENTS OF SUCH SYSTEMS; MONITORING OR TESTING ARRANGEMENTS FOR SUCH SYSTEMS OR ELEMENTS
- G05B11/00—Automatic controllers
- G05B11/01—Automatic controllers electric
- G05B11/36—Automatic controllers electric with provision for obtaining particular characteristics, e.g. proportional, integral, differential
- G05B11/42—Automatic controllers electric with provision for obtaining particular characteristics, e.g. proportional, integral, differential for obtaining a characteristic which is both proportional and time-dependent, e.g. P. I., P. I. D.
Landscapes
- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Automation & Control Theory (AREA)
- Support Of The Bearing (AREA)
- Sliding-Contact Bearings (AREA)
Abstract
A radial sliding bearing with an automatic oil blocking device comprises a lower half of the radial sliding bearing consisting of a lower bearing seat and a lower bearing bush, and an upper half of the radial sliding bearing consisting of an upper bearing seat and an upper bearing bush, wherein oil inlets are respectively arranged on the lower half and the upper half of the radial sliding bearing, and an oil blocking device is respectively arranged on the upstream edge of each oil inlet; the oil blocking device consists of an oil blocking block, a displacement sensor, a piezoelectric actuator and a screw, wherein the displacement sensor is installed on the oil blocking block, the signal output of the displacement sensor is connected with the input of the PID active controller, the output of the PID active controller is connected with the electric control end of the piezoelectric actuator, the piezoelectric actuator is arranged at the end of the oil blocking block, the screw is arranged on the outer side of the piezoelectric actuator and used for fixing the piezoelectric actuator after the position of the piezoelectric actuator is adjusted, and the PID active controller is installed in an external control cabinet; the invention can obviously reduce the temperature of the lubricating oil in the bearing and effectively enlarge the application range of the radial sliding bearing.
Description
Technical Field
The invention relates to the technical field of sliding bearings, in particular to a radial sliding bearing with an automatic oil blocking adjusting device.
Background
As one of the main supporting modes of the rotor, the sliding bearing has wide application in the engineering field, and compared with a rolling bearing, the sliding bearing has the obvious advantages of large bearing capacity, strong impact resistance, good damping characteristic and the like. When the sliding bearing works, if sufficient lubricating oil supply can be ensured, the surfaces sliding mutually are separated by the lubricating oil and are not in direct contact, the friction loss and the surface abrasion can be greatly reduced, and even the abrasion is eliminated; in addition, the lubricating oil film in the sliding bearing has certain vibration absorption capacity, which is beneficial to improving the stability and the precision of the rotor operation.
The radial sliding bearing is an important type of sliding bearing, is also widely applied to rotary machinery, and in the practical use process of the radial sliding bearing, especially under the high-speed or heavy-load working condition, because the extrusion and shearing movement of lubricating oil in the bearing is severe, the problem that the temperature of the lubricating oil exceeds the standard is often encountered. In engineering practice it is generally required that the maximum oil temperature in the plain bearing does not exceed 90 c, since an excessively high oil temperature may have an adverse effect on the bearing lining and the lubricating oil itself, with the risk of leading to failure of the plain bearing. An oil retaining device is arranged between adjacent bearing bushes in the radial sliding bearing, so that hot oil which participates in the lubrication of the upper bearing bush and has higher temperature is prevented from entering the lower bearing bush to the greatest extent, and the oil retaining device is one of effective ways for reducing the temperature of the lubricating oil in the bearing. The traditional oil blocking device generally has the problems of poor adaptability, unstable oil blocking effect and the like, which seriously restricts the application of the radial sliding bearing under severe working conditions such as high speed and heavy load and becomes a problem which must be solved in the popularization of the radial sliding bearing.
Disclosure of Invention
In order to overcome the defects of the prior art, the invention aims to provide the radial sliding bearing with the automatic oil blocking device, the oil blocking device has good adaptability and stable oil blocking effect, the temperature of lubricating oil in the bearing can be obviously reduced, and the application range of the radial sliding bearing is effectively expanded.
In order to achieve the purpose, the invention adopts the technical scheme that:
the utility model provides a radial slide bearing with automatically regulated oil blocking device, includes lower bearing frame 1 and bolster bearing housing 3, installs lower bearing bush 2 and bolster bearing bush 4 in lower bearing frame 1 and the bolster bearing housing 3 respectively, and lower bearing frame 1 and lower bearing bush 2 constitute radial slide bearing second half, and bolster bearing housing 3 and bolster bearing bush 4 constitute radial slide bearing first half, on radial slide bearing second half and first half, all are provided with oil inlet 6, respectively install an oil blocking device on the upper reaches limit of oil inlet 6.
Keep off oily device by keeping off oil piece 5, displacement sensor 9, piezoelectric actuator 8 and screw 7 are constituteed, it installs displacement sensor 9 to keep off on the oil piece 5, displacement sensor 9's signal output and PID active control ware 10's input connection, PID active control ware 10's output and piezoelectric actuator 8's electric control end are connected, piezoelectric actuator 8 sets up the end at keeping off oil piece 5, the piezoelectric actuator 8 outside is equipped with screw 7, screw 7 is used for fixing it behind the position of adjustment piezoelectric actuator 8, PID active control ware 10 installs in the outside switch board.
The displacement sensor 9 and the oil blocking block 5 are arranged in parallel and level, and the distance measured by the displacement sensor 9 is equal to the distance between the oil blocking block 5 and the shaft neck.
The displacement sensor 9 measures the distance between the oil blocking block 5 and the shaft neck and transmits the distance to the PID active controller 10, the PID active controller 10 compares the distance set in the PID active controller 10 to control the electric signal output to the piezoelectric actuator 8, the piezoelectric actuator 8 generates the required displacement under the action of the electric signal, and the distance between the oil blocking block 5 and the shaft neck is adjusted in real time, so that the distance between the oil blocking block 5 and the shaft neck is automatically kept at a constant value.
The radial sliding bearing is provided with two oil blocking devices, the distance between the two oil blocking blocks 5 and the shaft neck is measured by two displacement sensors 9 respectively and is adjusted by two piezoelectric actuators 8 respectively, and the radial sliding bearing can adapt to the working condition that the shaft neck axis and the radial sliding bearing axis are not parallel.
The invention has the beneficial effects that:
the oil blocking block 5 can effectively prevent hot oil which participates in the lubrication of the upper bearing bush and has higher temperature from entering the lower bearing bush, and the temperature of the lubricating oil in the bearing is obviously reduced.
The displacement sensor 9 can measure the distance between the oil blocking block 5 and the shaft neck in real time, and feed back the distance to the piezoelectric actuator 8 through the PID active controller 10, the piezoelectric actuator 8 generates displacement to adjust the distance between the oil blocking block 5 and the shaft neck in real time, so that the distance is always kept at a set value, hot oil can be effectively blocked, the oil blocking block 5 and the shaft neck can be ensured not to be contacted, the oil blocking effect of the oil blocking device can be automatically adjusted through closed-loop control, the problem of overhigh temperature of oil in the radial sliding bearing under the high-speed or heavy-load working condition is well solved, and the application range of the radial sliding bearing is effectively expanded.
Drawings
FIG. 1 is a schematic three-dimensional structure of an embodiment of the present invention.
Fig. 2 is a top full sectional view of fig. 1.
Fig. 3 is a front full sectional view of fig. 1.
FIG. 4 is a schematic diagram of a closed loop control according to an embodiment of the present invention.
Detailed Description
The present invention will be described in detail below with reference to the accompanying drawings and examples.
Referring to fig. 1, 2, 3 and 4, a radial sliding bearing with an automatic oil blocking device comprises a lower bearing seat 1 and an upper bearing seat 3, wherein a lower bearing bush 2 and an upper bearing bush 4 are respectively arranged in the lower bearing seat 1 and the upper bearing seat 3, the lower bearing seat 1 and the lower bearing bush 2 form a lower half of the radial sliding bearing, the upper bearing seat 3 and the upper bearing bush 4 form an upper half of the radial sliding bearing, oil inlets 6 are respectively arranged on the lower half and the upper half of the radial sliding bearing, and an oil blocking device is respectively arranged on the upstream side of each oil inlet 6;
the oil blocking device is composed of an oil blocking block 5, a displacement sensor 9, a piezoelectric actuator 8 and a screw 7, wherein the displacement sensor 9 and the oil blocking block 5 are installed in parallel and level, the distance measured by the displacement sensor 9 is equal to the distance between the oil blocking block 5 and a shaft neck, the signal output of the displacement sensor 9 is connected with the input of a PID (proportion integration differentiation) active controller 10, the output of the PID active controller 10 is connected with the electric control end of the piezoelectric actuator 8, the piezoelectric actuator 8 is arranged at the end of the oil blocking block 5, the oil blocking block 5 and the displacement sensor 9 move together under the action of the piezoelectric actuator 8, the distance between the oil blocking block 5 and the shaft neck is adjusted to be a set value in real time, and a good oil blocking effect is ensured; the outer side of the piezoelectric actuator 8 is provided with a screw 7, the screw 7 is used for fixing the piezoelectric actuator 8 after adjusting the position of the piezoelectric actuator within a certain range, and the PID active controller 10 is installed in an external control cabinet.
The radial sliding bearing is provided with two oil blocking devices, the distance between the two oil blocking blocks 5 and the shaft neck is measured by two displacement sensors 9 respectively and is adjusted by two piezoelectric actuators 8 respectively, and the radial sliding bearing can adapt to the working condition that the shaft neck axis and the radial sliding bearing axis are not parallel.
The working principle of the invention is as follows:
referring to fig. 4, the displacement sensor 9 measures the distance between the oil blocking block 5 and the journal, and transmits the distance to the PID active controller 10, the PID active controller 10 compares the distance set therein, and controls the electrical signal output to the piezoelectric actuator 8, the piezoelectric actuator 8 generates the required displacement under the action of the electrical signal, and the distance between the oil blocking block 5 and the journal is adjusted in real time, so that the distance between the oil blocking block 5 and the journal is automatically maintained at a constant value. Therefore, a good oil blocking effect can be ensured, the oil temperature in the radial sliding bearing is effectively reduced, and the collision and the abrasion between the oil blocking block 5 and the shaft neck can be avoided.
The oil blocking block 5 arranged on the upstream side of the oil inlet 6 can effectively block hot oil which participates in the lubrication of the upper bearing bush and has higher temperature from entering the next bearing bush, so that most of the hot oil is discharged from two end faces of the bearing and directly returns to a lubricating system for cooling. The cooled cold oil enters the next bearing bush through the oil inlet 6 to perform the lubricating task. Therefore, the temperature of the lubricating oil in the bearing is inevitably significantly lowered.
When the radial sliding bearing actually works, the position of the shaft neck can be changed constantly, therefore, the distance between the oil blocking block 5 and the shaft neck is a dynamic quantity, the displacement sensor 9 can measure the distance between the oil blocking block 5 and the shaft neck in real time and feed back the distance to the piezoelectric actuator 8 through the PID active controller 10, and the piezoelectric actuator 8 generates displacement to adjust the distance between the oil blocking block 5 and the shaft neck in real time, so that the distance is kept as a set value all the time, thereby not only effectively blocking hot oil, but also ensuring that the oil blocking block 5 and the shaft neck are not contacted. Through closed-loop control, can automatically regulated keep off the oily effect of oil device, solve the too high problem of oil temperature in radial sliding bearing under high-speed or heavy load operating mode well, effectively enlarge radial sliding bearing's range of application.
Claims (3)
1. The utility model provides a radial sliding bearing with automatically regulated keeps off oily device, including step (1) and bolster bearing housing (3), install lower axle bush (2) and bolster bearing shell (4) in step (1) and bolster bearing housing (3) respectively, step (1) and step (2) constitute radial sliding bearing lower half, bolster bearing housing (3) and bolster bearing shell (4) constitute radial sliding bearing upper half, on radial sliding bearing lower half and upper half, all be provided with oil inlet (6), respectively install an oil blocking device on the upper reaches limit of oil inlet (6), its characterized in that:
the oil blocking device is composed of an oil blocking block (5), a displacement sensor (9), a piezoelectric actuator (8) and a screw (7), the displacement sensor (9) is installed on the oil blocking block (5), the signal output of the displacement sensor (9) is connected with the input of a PID (proportion integration differentiation) active controller (10), the output of the PID active controller (10) is connected with the electric control end of the piezoelectric actuator (8), the piezoelectric actuator (8) is arranged at the end of the oil blocking block (5), the screw (7) is arranged on the outer side of the piezoelectric actuator (8), the screw (7) is used for fixing the piezoelectric actuator (8) after the position of the piezoelectric actuator is adjusted, and the PID active controller (10) is installed in an external control cabinet;
the distance between the oil blocking block (5) and the shaft neck is measured by the displacement sensor (9) and transmitted to the PID active controller (10), the PID active controller (10) is compared with the distance set in the PID active controller, an electric signal output to the piezoelectric actuator (8) is controlled, the piezoelectric actuator (8) generates required displacement under the action of the electric signal, the distance between the oil blocking block (5) and the shaft neck is adjusted in real time, and the distance between the oil blocking block (5) and the shaft neck is automatically kept to be a constant value.
2. A radial sliding bearing with an automatically adjusting oil stop according to claim 1, characterized in that: the displacement sensor (9) and the oil blocking block (5) are arranged in parallel, and the distance measured by the displacement sensor (9) is equal to the distance between the oil blocking block (5) and the shaft neck.
3. A radial sliding bearing with an automatically adjusting oil stop according to claim 1, characterized in that: the radial sliding bearing is provided with two oil blocking devices, the distance between the two oil blocking blocks (5) and the journal is measured by two displacement sensors (9) respectively and is adjusted by two piezoelectric actuators (8) respectively, and the radial sliding bearing can adapt to the working condition that the journal axis and the radial sliding bearing axis are not parallel.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910466661.6A CN110145536B (en) | 2019-05-31 | 2019-05-31 | Radial sliding bearing with automatic oil blocking adjusting device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910466661.6A CN110145536B (en) | 2019-05-31 | 2019-05-31 | Radial sliding bearing with automatic oil blocking adjusting device |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN110145536A CN110145536A (en) | 2019-08-20 |
| CN110145536B true CN110145536B (en) | 2020-03-31 |
Family
ID=67589857
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201910466661.6A Expired - Fee Related CN110145536B (en) | 2019-05-31 | 2019-05-31 | Radial sliding bearing with automatic oil blocking adjusting device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN110145536B (en) |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| SU625242A1 (en) * | 1977-04-25 | 1978-09-25 | Вильнюсский Завод Электроизмерительной Техники | Tape-driving mechanism driving shaft bearing |
| CN101225853A (en) * | 2008-02-01 | 2008-07-23 | 西安交通大学 | Dynamical pressure gas elasticity foil tablet bearing with stability self-adaptive control function |
| CN103711800A (en) * | 2014-01-20 | 2014-04-09 | 东方电气集团东方电机有限公司 | Oil removal method and oil removal device for liquid dynamic pressure thrust bearing |
| CN108591245A (en) * | 2018-03-17 | 2018-09-28 | 北京化工大学 | A kind of tilting bush sliding bearing nozzle with elastic deep fat partition apparatus |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP5121047B2 (en) * | 2007-11-02 | 2013-01-16 | 株式会社不二越 | Spindle device using hydrodynamic bearing and radial hydrodynamic bearing |
-
2019
- 2019-05-31 CN CN201910466661.6A patent/CN110145536B/en not_active Expired - Fee Related
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| SU625242A1 (en) * | 1977-04-25 | 1978-09-25 | Вильнюсский Завод Электроизмерительной Техники | Tape-driving mechanism driving shaft bearing |
| CN101225853A (en) * | 2008-02-01 | 2008-07-23 | 西安交通大学 | Dynamical pressure gas elasticity foil tablet bearing with stability self-adaptive control function |
| CN103711800A (en) * | 2014-01-20 | 2014-04-09 | 东方电气集团东方电机有限公司 | Oil removal method and oil removal device for liquid dynamic pressure thrust bearing |
| CN108591245A (en) * | 2018-03-17 | 2018-09-28 | 北京化工大学 | A kind of tilting bush sliding bearing nozzle with elastic deep fat partition apparatus |
Non-Patent Citations (1)
| Title |
|---|
| 新型高速滑动轴承的发展现状及其特性;王丽丽;《农业装备与车辆工程》;20070531(第05期);35-38 * |
Also Published As
| Publication number | Publication date |
|---|---|
| CN110145536A (en) | 2019-08-20 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| KR860000747B1 (en) | Lubricant control device | |
| CN105508426B (en) | Oil film rigidity adjustable fluid hybrid sliding bearing | |
| EP2626577B1 (en) | Method for controlling a wind turbine and wind turbine | |
| CN107795577B (en) | Radial sliding bearing | |
| CN110185701B (en) | Radial sliding bearing with self-adaptive oil retaining device | |
| CN109973471B (en) | Multi-fulcrum synchronous control method and system for large lifting platform | |
| CN102022430B (en) | Intelligent variable elliptic sliding bearing assembly | |
| CN110145536B (en) | Radial sliding bearing with automatic oil blocking adjusting device | |
| CN101428295B (en) | Micro-scale static four-high mill | |
| CN1621703A (en) | Machine tool electric main shaft realizing supporting float by adopting hydrostatic bearing | |
| CN106089996A (en) | A kind of Intelligent state adjustable dislocation plain bearing arrangement | |
| CN201086095Y (en) | Vertical Rolling Mill with Side Pressing Device | |
| CN204921922U (en) | Prevent structure of an axial float | |
| US5857372A (en) | Housing for cluster mills | |
| KR20130122885A (en) | An active magnetic hybrid bearing system using air hybrid bearing for auxiliary bearing | |
| CN207999442U (en) | Side glue groove slide construction | |
| CN106917818B (en) | A kind of adjustable hydrodynamic sliding bearing of milling train width | |
| US6158898A (en) | Preloading regulating mechanism for rolling bearings | |
| US3891283A (en) | Self-feeding hydrostatic | |
| CN214118742U (en) | Self-adaptive adjusting bearing for scanning frame | |
| CN101195127B (en) | Main transmission spindle carrier of roller mill locating and enclasping device | |
| CN201544365U (en) | Roller installation structure in open mill | |
| CN107917331B (en) | Early warning device and emergency method for bearing lubrication system | |
| CN211423166U (en) | Adjustable oil-spraying lubricating structure of tilting-pad sliding bearing | |
| CN211052163U (en) | Electromechanical liquid intelligent composite type finish rolling working roll locking device |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20200331 |